*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary: #0a0a0c;--bg-secondary: rgba(15, 12, 14, .85);--bg-tertiary: rgba(22, 18, 20, .9);--bg-elevated: rgba(32, 26, 28, .95);--accent-primary: #d64045;--accent-primary-hover: #e55459;--accent-primary-muted: rgba(214, 64, 69, .1);--accent-secondary: #a33438;--accent-tertiary: #722428;--accent-pink: #ff7a8f;--accent-cyan: #39b7d9;--accent-gold: #d4a373;--accent-streak: #e85d04;--accent-success: #2d9a5c;--accent-warm: #b8860b;--ambient-glow-a: rgba(214, 64, 69, .08);--ambient-glow-b: rgba(163, 52, 56, .06);--ambient-glow-c: rgba(255, 255, 255, .03);--ambient-base: rgba(10, 10, 12, 1);--orb-a: rgba(214, 64, 69, .06);--orb-b: rgba(163, 52, 56, .05);--orb-c: rgba(255, 255, 255, .02);--text-primary: rgba(255, 255, 255, .95);--text-secondary: rgba(255, 255, 255, .65);--text-muted: rgba(255, 255, 255, .4);--text-accent: #ff6b7a;--glass-bg: rgba(15, 12, 14, .7);--glass-bg-light: rgba(25, 20, 22, .6);--glass-border: rgba(255, 255, 255, .08);--glass-border-accent: rgba(196, 30, 58, .3);--glass-blur: blur(20px);--glass-blur-strong: blur(40px);--border-subtle: rgba(255, 255, 255, .06);--border-medium: rgba(255, 255, 255, .1);--border-accent: rgba(214, 64, 69, .3);--shadow-sm: 0 2px 12px rgba(0, 0, 0, .08);--shadow-md: 0 8px 30px rgba(0, 0, 0, .12);--shadow-lg: 0 20px 60px rgba(0, 0, 0, .15);--shadow-glow: 0 0 60px rgba(214, 64, 69, .1);--shadow-glow-strong: 0 0 80px rgba(214, 64, 69, .15);--shadow-inner: inset 0 1px 0 rgba(255, 255, 255, .04);--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--space-xl: 32px;--space-2xl: 48px;--space-3xl: 64px;--space-section: 80px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 20px;--radius-xl: 28px;--radius-full: 9999px;--font-family: "SF Pro Display", -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", sans-serif;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 2rem;--transition-fast: .18s cubic-bezier(.25, .46, .45, .94);--transition-normal: .3s cubic-bezier(.25, .46, .45, .94);--transition-slow: .5s cubic-bezier(.25, .46, .45, .94);--transition-spring: .4s cubic-bezier(.175, .885, .32, 1.275)}html.theme-obsidian-ember{color-scheme:dark;--accent-warm: #ff7a8f}html.theme-arctic-pulse{color-scheme:dark;--bg-primary: #060b13;--bg-secondary: rgba(9, 18, 30, .84);--bg-tertiary: rgba(11, 24, 38, .9);--bg-elevated: rgba(16, 32, 50, .95);--accent-primary: #26b4ff;--accent-primary-hover: #57c5ff;--accent-primary-muted: rgba(38, 180, 255, .14);--accent-secondary: #1578c4;--accent-tertiary: #0b4e86;--accent-pink: #60d6ff;--accent-cyan: #6de6ff;--accent-gold: #83d5ff;--accent-streak: #14b8d4;--accent-success: #0ea5a5;--accent-warm: #6de6ff;--text-accent: #7dd3fc;--glass-bg: rgba(7, 18, 32, .72);--glass-bg-light: rgba(10, 24, 40, .66);--glass-border-accent: rgba(38, 180, 255, .3);--border-accent: rgba(38, 180, 255, .32);--shadow-glow: 0 0 60px rgba(38, 180, 255, .16);--shadow-glow-strong: 0 0 84px rgba(38, 180, 255, .24);--ambient-glow-a: rgba(38, 180, 255, .12);--ambient-glow-b: rgba(20, 98, 178, .1);--ambient-glow-c: rgba(109, 230, 255, .08);--ambient-base: rgba(5, 10, 18, 1);--orb-a: rgba(38, 180, 255, .1);--orb-b: rgba(14, 165, 233, .08);--orb-c: rgba(109, 230, 255, .05)}html.theme-verdant-forest{color-scheme:dark;--bg-primary: #070c0a;--bg-secondary: rgba(12, 18, 14, .86);--bg-tertiary: rgba(18, 26, 19, .9);--bg-elevated: rgba(28, 38, 29, .95);--accent-primary: #38d39f;--accent-primary-hover: #5ae0b1;--accent-primary-muted: rgba(56, 211, 159, .14);--accent-secondary: #29b281;--accent-tertiary: #1e7d5b;--accent-pink: #8be8be;--accent-cyan: #59d7b3;--accent-gold: #67e3b9;--accent-streak: #4ecf95;--accent-success: #31b77a;--accent-warm: #67e3b9;--text-accent: #baf7de;--glass-bg: rgba(11, 18, 14, .72);--glass-bg-light: rgba(17, 27, 22, .64);--glass-border-accent: rgba(56, 211, 159, .3);--border-accent: rgba(56, 211, 159, .3);--shadow-glow: 0 0 58px rgba(56, 211, 159, .14);--shadow-glow-strong: 0 0 82px rgba(56, 211, 159, .2);--ambient-glow-a: rgba(56, 211, 159, .1);--ambient-glow-b: rgba(41, 178, 129, .09);--ambient-glow-c: rgba(103, 227, 185, .08);--ambient-base: rgba(6, 11, 8, 1);--orb-a: rgba(56, 211, 159, .09);--orb-b: rgba(41, 178, 129, .08);--orb-c: rgba(103, 227, 185, .05)}html.theme-amethyst-luxe{color-scheme:dark;--bg-primary: #08060f;--bg-secondary: rgba(13, 10, 24, .86);--bg-tertiary: rgba(19, 15, 34, .9);--bg-elevated: rgba(30, 22, 50, .95);--accent-primary: #b58cff;--accent-primary-hover: #c8a7ff;--accent-primary-muted: rgba(181, 140, 255, .16);--accent-secondary: #8d63e8;--accent-tertiary: #643fb9;--accent-pink: #d2bcff;--accent-cyan: #9bc3ff;--accent-gold: #e7d8ff;--accent-streak: #a78bfa;--accent-success: #7dd3fc;--accent-warm: #d9c7ff;--text-accent: #e9ddff;--glass-bg: rgba(12, 10, 22, .74);--glass-bg-light: rgba(18, 14, 32, .66);--glass-border-accent: rgba(181, 140, 255, .32);--border-accent: rgba(181, 140, 255, .34);--shadow-glow: 0 0 62px rgba(181, 140, 255, .18);--shadow-glow-strong: 0 0 86px rgba(181, 140, 255, .26);--ambient-glow-a: rgba(181, 140, 255, .11);--ambient-glow-b: rgba(141, 99, 232, .1);--ambient-glow-c: rgba(210, 188, 255, .07);--ambient-base: rgba(7, 5, 12, 1);--orb-a: rgba(181, 140, 255, .1);--orb-b: rgba(141, 99, 232, .08);--orb-c: rgba(210, 188, 255, .05)}html.theme-champagne-aqua{color-scheme:dark;--bg-primary: #06090c;--bg-secondary: rgba(10, 16, 20, .86);--bg-tertiary: rgba(14, 22, 28, .9);--bg-elevated: rgba(21, 34, 40, .95);--accent-primary: #6dd7c8;--accent-primary-hover: #8ae3d6;--accent-primary-muted: rgba(109, 215, 200, .15);--accent-secondary: #49b8a8;--accent-tertiary: #2f8479;--accent-pink: #f2d8a7;--accent-cyan: #86f0e2;--accent-gold: #e7c48f;--accent-streak: #f3c97d;--accent-success: #5cc9a0;--accent-warm: #f0d2a1;--text-accent: #e9d7b5;--glass-bg: rgba(9, 16, 20, .74);--glass-bg-light: rgba(13, 22, 27, .67);--glass-border-accent: rgba(109, 215, 200, .3);--border-accent: rgba(109, 215, 200, .32);--shadow-glow: 0 0 60px rgba(109, 215, 200, .16);--shadow-glow-strong: 0 0 84px rgba(109, 215, 200, .24);--ambient-glow-a: rgba(109, 215, 200, .1);--ambient-glow-b: rgba(73, 184, 168, .09);--ambient-glow-c: rgba(231, 196, 143, .07);--ambient-base: rgba(5, 8, 10, 1);--orb-a: rgba(109, 215, 200, .09);--orb-b: rgba(73, 184, 168, .08);--orb-c: rgba(231, 196, 143, .05)}html.theme-noir-monochrome{color-scheme:dark;--bg-primary: #000000;--bg-secondary: rgba(4, 4, 4, .9);--bg-tertiary: rgba(10, 10, 10, .92);--bg-elevated: rgba(18, 18, 18, .96);--accent-primary: #f5f5f5;--accent-primary-hover: #ffffff;--accent-primary-muted: rgba(255, 255, 255, .16);--accent-secondary: #d4d4d4;--accent-tertiary: #a3a3a3;--accent-pink: #e6e6e6;--accent-cyan: #d9d9d9;--accent-gold: #cccccc;--accent-streak: #ffffff;--accent-success: #dcdcdc;--accent-warm: #e8e8e8;--text-accent: #ffffff;--glass-bg: rgba(8, 8, 8, .76);--glass-bg-light: rgba(14, 14, 14, .7);--glass-border-accent: rgba(255, 255, 255, .24);--border-accent: rgba(255, 255, 255, .3);--shadow-glow: 0 0 52px rgba(255, 255, 255, .1);--shadow-glow-strong: 0 0 78px rgba(255, 255, 255, .18);--ambient-glow-a: rgba(255, 255, 255, .06);--ambient-glow-b: rgba(255, 255, 255, .04);--ambient-glow-c: rgba(255, 255, 255, .03);--ambient-base: rgba(0, 0, 0, 1);--orb-a: rgba(255, 255, 255, .05);--orb-b: rgba(255, 255, 255, .03);--orb-c: rgba(255, 255, 255, .02)}html.theme-noir-monochrome .glass-add-btn,html.theme-noir-monochrome .compact-add-card,html.theme-noir-monochrome .streak-chip{background:linear-gradient(155deg,#ffffff24,#ffffff0f 34%,#080808bd);border-color:#ffffff42;box-shadow:inset 0 1px #ffffff3d,inset 0 -18px 26px #00000057,0 18px 32px #00000073;backdrop-filter:blur(24px) saturate(130%);-webkit-backdrop-filter:blur(24px) saturate(130%)}html.theme-noir-monochrome .glass-add-btn,html.theme-noir-monochrome .compact-add-card{color:#ffffffeb}html.theme-noir-monochrome .glass-add-btn:hover,html.theme-noir-monochrome .compact-add-card:hover{border-color:#fff6;background:linear-gradient(150deg,#ffffff38,#ffffff14 40%,#050505c7);box-shadow:inset 0 1px #ffffff4d,inset 0 -22px 30px #00000057,0 20px 38px #00000085}html.theme-noir-monochrome .streak-chip,html.theme-noir-monochrome .streak-chip svg{color:#fff}html.theme-noir-monochrome .streak-chip svg{filter:drop-shadow(0 0 10px rgba(255,255,255,.42))}html.theme-noir-monochrome .streak-multiplier{background:linear-gradient(135deg,#fff,#d6d6d6);border:1px solid rgba(255,255,255,.34);color:#050505}html.light-mode{color-scheme:light;--bg-primary: #f6f7fb;--bg-secondary: rgba(255, 255, 255, .9);--bg-tertiary: rgba(248, 250, 252, .92);--bg-elevated: rgba(255, 255, 255, .98);--accent-primary: #d64045;--accent-primary-hover: #c13539;--accent-primary-muted: rgba(214, 64, 69, .08);--accent-secondary: #a33438;--accent-tertiary: #8a2529;--accent-pink: #e05d71;--accent-cyan: #0c9ec3;--accent-gold: #b8860b;--accent-streak: #d45400;--accent-success: #228b4a;--accent-warm: #b8860b;--text-primary: rgba(15, 23, 42, .96);--text-secondary: rgba(15, 23, 42, .72);--text-muted: rgba(15, 23, 42, .5);--text-accent: #c13539;--glass-bg: rgba(255, 255, 255, .8);--glass-bg-light: rgba(255, 255, 255, .68);--glass-border: rgba(15, 23, 42, .1);--glass-border-accent: rgba(196, 30, 58, .2);--glass-blur: blur(20px);--glass-blur-strong: blur(40px);--border-subtle: rgba(15, 23, 42, .08);--border-medium: rgba(15, 23, 42, .14);--border-accent: rgba(214, 64, 69, .25);--shadow-sm: 0 1px 2px rgba(15, 23, 42, .06), 0 8px 18px rgba(15, 23, 42, .06);--shadow-md: 0 2px 6px rgba(15, 23, 42, .07), 0 14px 30px rgba(15, 23, 42, .08);--shadow-lg: 0 4px 10px rgba(15, 23, 42, .08), 0 24px 48px rgba(15, 23, 42, .1);--shadow-glow: 0 0 60px rgba(214, 64, 69, .06);--shadow-glow-strong: 0 0 80px rgba(214, 64, 69, .08);--shadow-inner: inset 0 1px 0 rgba(255, 255, 255, .6)}html.light-mode body:before,html.light-mode body:after{display:none}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}body{font-family:var(--font-family);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;overflow:hidden;position:relative}body:before{content:"";position:fixed;top:0;left:0;right:0;bottom:0;background:radial-gradient(ellipse 80% 60% at 20% 10%,var(--ambient-glow-a) 0%,transparent 50%),radial-gradient(ellipse 60% 50% at 80% 20%,var(--ambient-glow-b) 0%,transparent 45%),radial-gradient(ellipse 50% 40% at 50% 90%,var(--ambient-glow-c) 0%,transparent 40%),radial-gradient(ellipse 100% 100% at 50% 50%,var(--ambient-base) 0%,var(--ambient-base) 100%);z-index:-2;animation:ambientPulse 15s ease-in-out infinite}body:after{content:"";position:fixed;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle 400px at 10% 30%,var(--orb-a) 0%,transparent 60%),radial-gradient(circle 300px at 90% 70%,var(--orb-b) 0%,transparent 50%),radial-gradient(circle 500px at 50% 50%,var(--orb-c) 0%,transparent 70%);z-index:-1;animation:floatingOrbs 20s ease-in-out infinite alternate;pointer-events:none}@keyframes ambientPulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.85;transform:scale(1.02)}}@keyframes floatingOrbs{0%{transform:translate(0) rotate(0)}33%{transform:translate(30px,-20px) rotate(2deg)}66%{transform:translate(-20px,15px) rotate(-1deg)}to{transform:translate(10px,-10px) rotate(1deg)}}@keyframes flamePulse{0%,to{filter:drop-shadow(0 0 4px rgba(245,158,11,.4));transform:scale(1)}50%{filter:drop-shadow(0 0 10px rgba(245,158,11,.7));transform:scale(1.1)}}@keyframes subtleFloat{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}@keyframes gradientShift{0%{background-position:0% 50%}50%{background-position:100% 50%}to{background-position:0% 50%}}@keyframes cardEntrance{0%{opacity:0}to{opacity:1}}#root{min-height:100vh;display:flex;flex-direction:column;position:relative}.glass{background:var(--glass-bg);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border:1px solid var(--glass-border);box-shadow:var(--shadow-inner),var(--shadow-md)}.glass-strong{background:var(--glass-bg-light);backdrop-filter:var(--glass-blur-strong);-webkit-backdrop-filter:var(--glass-blur-strong);border:1px solid var(--glass-border);box-shadow:var(--shadow-inner),var(--shadow-lg)}.glass-accent{background:var(--glass-bg);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border:1px solid var(--glass-border-accent);box-shadow:var(--shadow-inner),var(--shadow-glow)}.glow-hover{transition:box-shadow var(--transition-normal),transform var(--transition-normal)}.glow-hover:hover{box-shadow:var(--shadow-glow);transform:translateY(-2px)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--bg-elevated);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb{transition:background .2s ease}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.app-container{display:flex;flex-direction:column;height:100vh;overflow:hidden;padding-top:64px;position:relative}.app-container.distraction-free-mode{padding-top:0}.app-container.distraction-free-mode .main-header{transform:translateY(-110%);opacity:0;pointer-events:none;transition:transform .35s cubic-bezier(.4,0,.2,1),opacity .35s ease}.app-container.distraction-free-mode .left-sidebar,.app-container.distraction-free-mode .right-sidebar,.app-container.distraction-free-mode .resize-divider{width:0!important;min-width:0!important;opacity:0;pointer-events:none;border:none!important;overflow:hidden!important;transition:width .35s cubic-bezier(.4,0,.2,1),opacity .3s ease}.app-container.distraction-free-mode .center-content{min-width:100%}.distraction-exit-btn{position:fixed;top:14px;right:16px;z-index:180;border:1px solid var(--border-medium);background:#06080fb8;color:var(--text-primary);border-radius:999px;padding:8px 12px;font-size:12px;font-weight:600;letter-spacing:.02em;cursor:pointer;transition:all .2s ease}.distraction-exit-btn:hover{border-color:var(--accent-primary);color:var(--accent-primary);transform:translateY(-1px)}.demo-tour-overlay{position:fixed;left:18px;bottom:18px;z-index:190;pointer-events:none}.demo-tour-card{pointer-events:auto;width:min(420px,calc(100vw - 36px));border:1px solid var(--border-medium);background:#080b14e6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:16px;box-shadow:0 20px 60px #00000073;padding:14px 14px 12px;animation:tourCardSlideIn .35s cubic-bezier(.175,.885,.32,1.275) both}@keyframes tourCardSlideIn{0%{opacity:0;transform:translateY(16px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}.demo-tour-progress{display:inline-flex;padding:4px 8px;border-radius:999px;background:#c41e3a33;border:1px solid rgba(196,30,58,.4);font-size:11px;font-weight:700;color:var(--text-secondary);letter-spacing:.02em;margin-bottom:8px}.demo-tour-card h3{margin:0;font-size:18px;color:var(--text-primary)}.demo-tour-card p{margin:8px 0 0;font-size:13px;line-height:1.5;color:var(--text-secondary)}.demo-tour-actions{display:flex;gap:8px;margin-top:12px}.demo-tour-actions button{border:1px solid var(--border-medium);background:var(--bg-tertiary);color:var(--text-primary);border-radius:10px;font-size:12px;font-weight:600;padding:7px 11px;cursor:pointer}.demo-tour-actions button{transition:all .15s ease}.demo-tour-actions button:hover:not(:disabled){background:var(--bg-elevated);transform:translateY(-1px)}.demo-tour-actions button:active:not(:disabled){transform:scale(.96)}.demo-tour-actions button:disabled{opacity:.45;cursor:not-allowed}.demo-tour-start-btn{position:fixed;left:16px;top:14px;z-index:180;border:1px solid rgba(196,30,58,.5);background:#c41e3a2e;color:var(--text-primary);border-radius:999px;padding:8px 12px;font-size:12px;font-weight:700;letter-spacing:.02em;cursor:pointer}.feature-guide-root{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1250;pointer-events:none}.feature-guide-scrim{position:fixed;background:#03060e9e;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);pointer-events:auto}.feature-guide-spotlight{position:fixed;border:1px solid rgba(255,255,255,.45);box-shadow:0 0 0 1px #ff525259,0 10px 42px #0000007a;pointer-events:none;animation:featureGuidePulse 1.9s ease-in-out infinite}.feature-guide-card{position:fixed;border:1px solid rgba(255,255,255,.16);background:linear-gradient(180deg,#0c101cf5,#080c14f5);border-radius:16px;box-shadow:0 28px 80px #0000008f;padding:16px 16px 14px;pointer-events:auto;animation:tourCardSlideIn .35s cubic-bezier(.175,.885,.32,1.275) both}.feature-guide-progress{display:inline-flex;border-radius:999px;border:1px solid rgba(255,82,82,.42);background:#ff525229;color:#ffffffe6;font-size:11px;font-weight:700;letter-spacing:.03em;padding:4px 8px;margin-bottom:10px}.feature-guide-card h3{margin:0;font-size:20px;line-height:1.2;color:var(--text-primary)}.feature-guide-card p{margin:10px 0 0;color:var(--text-secondary);font-size:13px;line-height:1.5}.feature-guide-missing{margin-top:10px;padding:8px 10px;border-radius:10px;border:1px solid rgba(251,191,36,.36);background:#fbbf241f;color:#ffeec6e6!important;font-size:12px!important}.feature-guide-actions{display:flex;gap:8px;margin-top:14px}.feature-guide-actions button{height:38px;border-radius:10px;border:1px solid var(--border-medium);background:var(--bg-tertiary);color:var(--text-primary);padding:0 12px;font-size:13px;font-weight:700;cursor:pointer}.feature-guide-actions button:nth-child(2){border-color:#ff5252a6;background:linear-gradient(135deg,#ff5252f2,#e03030f2);color:#fff}.feature-guide-actions button:disabled{opacity:.45;cursor:not-allowed}@keyframes featureGuidePulse{0%{box-shadow:0 0 0 1px #ff52523d,0 8px 30px #00000070}50%{box-shadow:0 0 0 1px #ff525280,0 12px 44px #0000008f}to{box-shadow:0 0 0 1px #ff52523d,0 8px 30px #00000070}}@media (max-width: 760px){.feature-guide-card{border-radius:14px;padding:14px 14px 12px}.feature-guide-card h3{font-size:18px}.feature-guide-actions{flex-wrap:wrap}.feature-guide-actions button{flex:1 1 30%;min-width:88px}}@media (prefers-reduced-motion: reduce){.feature-guide-spotlight{animation:none}}.main-content{display:flex;flex:1;overflow:hidden;position:relative}.main-content.right-sidebar-hidden .center-content{min-width:0}.left-sidebar,.ls{background:var(--glass-bg);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border-right:1px solid var(--glass-border);display:flex;flex-direction:column;overflow:auto;flex-shrink:0;container-type:inline-size}.left-sidebar>.left-sidebar-inner,.left-sidebar>div:first-child{padding:20px;display:flex;flex-direction:column;gap:20px;height:100%;width:100%}.left-sidebar:hover{border-right-color:var(--border-medium)}.resize-divider{width:6px;cursor:ew-resize;background:transparent;position:relative;flex-shrink:0;z-index:50;transition:background .15s}.resize-divider:hover,.resize-divider:active{background:#c41e3a33}.resize-divider:after{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:4px;height:40px;background:var(--border-medium);border-radius:2px;opacity:.4;transition:opacity .2s,background .2s}.resize-divider:hover:after,.resize-divider:active:after{opacity:1;background:var(--accent-primary)}.center-content{flex:1;display:flex;flex-direction:column;overflow:hidden;position:relative;min-width:300px}.no-file-selected{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;color:var(--text-muted);text-align:center;padding:40px}.no-file-icon{font-size:64px;opacity:.5}.no-file-selected h3{color:var(--text-secondary);font-size:18px;font-weight:600;margin:0}.no-file-selected p{color:var(--text-muted);font-size:14px;margin:0}.sidebar-back-btn{display:flex;align-items:center;gap:8px;padding:0;background:transparent;border:none;color:var(--text-muted);font-size:13px;font-weight:500;cursor:pointer;transition:color .15s}.sidebar-back-btn:hover{color:var(--text-primary)}.sidebar-course-card{display:flex;align-items:center;gap:14px;padding:16px;background:var(--glass-bg-light);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border-radius:14px;border:1px solid var(--glass-border-accent);border-left:3px solid var(--accent-primary);box-shadow:var(--shadow-glow)}.course-emoji{font-size:32px;flex-shrink:0}.course-meta{flex:1;min-width:0}.course-title{font-size:15px;font-weight:600;color:var(--text-primary);margin:0 0 4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.course-stats{font-size:12px;color:var(--text-muted)}.materials-section{display:flex;flex-direction:column;flex:1;min-height:0;overflow:hidden}.materials-header{display:flex;align-items:center;gap:8px;padding:8px 0;background:transparent;border:none;color:var(--text-secondary);font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:1px;cursor:pointer;transition:color .15s}.materials-header:hover{color:var(--text-primary)}.materials-count{margin-left:auto;padding:2px 8px;background:var(--bg-elevated);border-radius:10px;font-size:11px;color:var(--text-muted)}.materials-content{flex:1;overflow-y:auto;padding-right:4px}.upload-dropzone{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:28px 20px;border:2px dashed var(--border-medium);border-radius:14px;color:var(--text-muted);font-size:13px;text-align:center;cursor:pointer;transition:all var(--transition-normal);background:#c41e3a05}.upload-dropzone:hover{border-color:var(--accent-primary);color:var(--text-secondary);background:#c41e3a14;box-shadow:var(--shadow-glow)}.sidebar-spacer{flex:1}.circular-timer-container{display:flex;flex-direction:column;align-items:center;gap:16px;padding-top:16px;border-top:1px solid var(--border-subtle)}.circular-timer{position:relative;width:140px;height:140px}.timer-svg{width:100%;height:100%;transform:rotate(-90deg)}.timer-svg .timer-track{fill:none;stroke:var(--bg-elevated, rgba(255, 255, 255, .08));stroke-width:6}.timer-svg .timer-progress{fill:none;stroke:var(--accent-primary);stroke-width:6;stroke-linecap:round;transition:stroke-dasharray 1s linear}.timer-svg .timer-progress.focus{stroke:var(--accent-primary)}.timer-svg .timer-progress.break{stroke:#f59e0b}.timer-content{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center}.timer-time-large{font-size:32px;font-weight:600;font-variant-numeric:tabular-nums;color:var(--text-primary);letter-spacing:-1px}.timer-mode-label{font-size:11px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:2px}.timer-actions{display:flex;align-items:center;gap:10px}.timer-start-btn{display:flex;align-items:center;gap:8px;padding:10px 24px;background:linear-gradient(135deg,var(--accent-primary),#9a1830);border:none;border-radius:24px;color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:all .2s;box-shadow:0 4px 12px #22c55e4d}.timer-start-btn:hover{transform:translateY(-2px);box-shadow:0 6px 16px #22c55e66}.focus-timer{--ft-surface: rgba(20, 16, 20, .94);--ft-surface-strong: rgba(24, 20, 24, .97);--ft-border: rgba(255, 255, 255, .11);--ft-border-strong: rgba(255, 255, 255, .18);--ft-ink: rgba(249, 249, 252, .97);--ft-muted: rgba(255, 255, 255, .58);--ft-track: rgba(255, 255, 255, .12);--ft-progress-focus: rgba(249, 249, 252, .98);--ft-progress-break: rgba(220, 197, 167, .94);--ft-overlay: rgba(8, 10, 12, .74);--ft-overlay-card: rgba(24, 20, 24, .94);--ft-btn-bg: rgba(255, 255, 255, .015);--ft-btn-bg-hover: rgba(255, 255, 255, .04);--ft-btn-border: rgba(255, 255, 255, .11);--ft-btn-primary-bg: rgba(237, 238, 245, .98);--ft-btn-primary-text: rgba(16, 18, 22, .96);--ft-preset-active-bg: rgba(255, 255, 255, .1);--ft-preset-active-border: rgba(255, 255, 255, .28);--ft-dial-size: clamp(132px, 58cqi, 152px);--ft-time-size: clamp(32px, 14cqi, 42px);width:100%;max-width:100%;align-self:stretch;display:flex;flex-direction:column;align-items:center;gap:18px;padding:22px 18px 20px;border-radius:28px;border:1px solid var(--ft-border);background:linear-gradient(180deg,#181216f5,#120e12fa);box-shadow:inset 0 1px #ffffff0a;position:relative;overflow:hidden}.focus-timer.is-active{border-color:var(--ft-border-strong);background:var(--ft-surface-strong)}.focus-timer.is-break{border-color:#d2b89447}.focus-timer-transition-overlay{position:absolute;top:0;right:0;bottom:0;left:0;z-index:8;display:flex;align-items:center;justify-content:center;padding:12px;background:var(--ft-overlay);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}.focus-timer-transition-card{width:100%;border-radius:18px;padding:12px;border:1px solid var(--ft-btn-border);background:var(--ft-overlay-card)}.focus-timer-transition-top{display:flex;align-items:baseline;justify-content:space-between;gap:8px}.focus-timer-transition-label{font-size:10px;font-weight:650;text-transform:uppercase;letter-spacing:.1em;color:var(--ft-muted)}.focus-timer-transition-count{font-family:JetBrains Mono,ui-monospace,SFMono-Regular,Menlo,monospace;font-size:20px;font-weight:700;color:var(--ft-ink)}.focus-timer-transition-bar{margin-top:9px;height:6px;border-radius:999px;background:var(--ft-track);overflow:hidden}.focus-timer-transition-bar-fill{height:100%;border-radius:999px;background:var(--ft-ink);transition:width .12s linear}.focus-timer-dial{position:relative;width:var(--ft-dial-size);height:var(--ft-dial-size)}.focus-timer-ring{width:100%;height:100%;transform:rotate(-90deg)}.focus-timer-track{fill:none;stroke:var(--ft-track);stroke-width:6}.focus-timer-progress{fill:none;stroke:var(--ft-progress-focus);stroke-width:6;stroke-linecap:round;transition:stroke-dasharray .35s linear}.focus-timer-progress.break{stroke:var(--ft-progress-break)}.focus-timer-center{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px}.focus-timer-time{font-family:JetBrains Mono,ui-monospace,SFMono-Regular,Menlo,monospace;font-size:var(--ft-time-size);font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.03em;color:var(--ft-ink)}.focus-timer-mode{font-size:10px;font-weight:650;text-transform:uppercase;letter-spacing:.11em;color:var(--ft-muted)}.focus-timer-actions{width:100%;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.focus-timer-btn{height:48px;border-radius:18px;border:1px solid var(--ft-btn-border);background:var(--ft-btn-bg);color:var(--ft-ink);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:inset 0 1px #ffffff08;transition:background .18s ease,border-color .18s ease,color .18s ease,opacity .18s ease}.focus-timer-btn svg{width:22px;height:22px}.focus-timer-btn.primary{background:var(--ft-btn-primary-bg);border-color:var(--ft-btn-primary-bg);color:var(--ft-btn-primary-text);box-shadow:none}.focus-timer-btn.neutral{background:var(--ft-btn-bg)}.focus-timer-btn:hover:not(:disabled){background:var(--ft-btn-bg-hover);border-color:var(--ft-border-strong)}.focus-timer-btn.primary:hover:not(:disabled){background:#fffffffc;border-color:#fffffffc}.focus-timer-btn:focus-visible{outline:2px solid rgba(255,255,255,.45);outline-offset:1px}.focus-timer-btn:disabled{opacity:.42;cursor:not-allowed}.focus-timer-presets{width:100%;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.focus-timer-preset-btn{height:42px;border-radius:999px;border:1px solid var(--ft-btn-border);background:#ffffff04;color:var(--ft-muted);font-size:12px;font-weight:700;letter-spacing:.02em;cursor:pointer;transition:background .16s ease,border-color .16s ease,color .16s ease}@container (max-width: 280px){.focus-timer{gap:12px;border-radius:22px;padding:18px 14px 16px}.focus-timer-actions{gap:10px}.focus-timer-presets{gap:6px}}.focus-timer-preset-btn:hover{background:var(--ft-btn-bg-hover);border-color:var(--ft-border-strong);color:var(--ft-ink)}.focus-timer-preset-btn.active{background:var(--ft-preset-active-bg);border-color:var(--ft-preset-active-border);color:var(--ft-ink)}html.light-mode .focus-timer{--ft-surface: rgba(255, 255, 255, .82);--ft-surface-strong: rgba(255, 255, 255, .96);--ft-border: rgba(12, 16, 22, .1);--ft-border-strong: rgba(12, 16, 22, .2);--ft-ink: rgba(10, 14, 20, .92);--ft-muted: rgba(10, 14, 20, .52);--ft-track: rgba(10, 14, 20, .12);--ft-progress-focus: rgba(16, 22, 30, .9);--ft-progress-break: rgba(148, 112, 72, .86);--ft-overlay: rgba(241, 243, 246, .74);--ft-overlay-card: rgba(255, 255, 255, .95);--ft-btn-bg: rgba(10, 14, 20, .04);--ft-btn-bg-hover: rgba(10, 14, 20, .08);--ft-btn-border: rgba(10, 14, 20, .14);--ft-btn-primary-bg: rgba(16, 22, 30, .92);--ft-btn-primary-text: rgba(255, 255, 255, .96);--ft-preset-active-bg: rgba(10, 14, 20, .1);--ft-preset-active-border: rgba(10, 14, 20, .24);box-shadow:inset 0 1px #ffffffd9,var(--shadow-sm)}@media (max-width: 900px){.focus-timer{width:100%;max-width:100%}}@media (prefers-reduced-motion: reduce){.focus-timer-progress,.focus-timer-transition-bar-fill,.focus-timer-btn,.focus-timer-preset-btn{transition:none}}.timer-section-large{display:flex;flex-direction:column;align-items:center;gap:16px;padding:20px 16px;background:var(--bg-tertiary);border-radius:16px;position:relative;overflow:hidden}.timer-transition-overlay{position:absolute;top:0;right:0;bottom:0;left:0;z-index:5;display:flex;align-items:center;justify-content:center;padding:14px;background:#0006;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.timer-transition-glass{width:100%;border-radius:16px;padding:12px 12px 10px;border:1px solid rgba(255,255,255,.14);background:#ffffff0f;box-shadow:0 18px 50px #00000073,inset 0 1px #ffffff1a}.timer-transition-top{display:flex;align-items:baseline;justify-content:space-between;gap:10px}.timer-transition-label{font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.9px;color:#ffffffb8}.timer-transition-count{font-size:22px;font-weight:950;letter-spacing:-.4px;color:#ffffffeb}.timer-transition-bar{margin-top:10px;height:10px;border-radius:999px;background:#ffffff14;border:1px solid rgba(255,255,255,.1);overflow:hidden}.timer-transition-bar-fill{height:100%;border-radius:999px;background:var(--text-primary);transition:width .1s linear}.circular-timer-large{position:relative;width:120px;height:120px}.timer-svg-large{width:100%;height:100%;transform:rotate(-90deg)}.timer-svg-large .timer-track{fill:none;stroke:var(--bg-elevated, rgba(255, 255, 255, .08));stroke-width:5}.timer-svg-large .timer-progress{fill:none;stroke:var(--accent-primary);stroke-width:5;stroke-linecap:round;transition:stroke-dasharray 1s linear}.timer-svg-large .timer-progress.focus{stroke:var(--accent-primary)}.timer-svg-large .timer-progress.break{stroke:#f59e0b}.timer-content-large{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center}.timer-time-big{font-size:26px;font-weight:600;font-variant-numeric:tabular-nums;color:var(--text-primary);letter-spacing:-1px}.timer-mode-big{font-size:10px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:2px}.timer-actions-large{display:flex;align-items:center;justify-content:center;gap:8px;width:100%}.timer-action-btn{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border:1px solid var(--border-medium);border-radius:50%;cursor:pointer;transition:all .2s;flex-shrink:0}.timer-action-btn:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}.timer-action-btn.play{background:linear-gradient(135deg,var(--accent-primary),#9a1830);border:none;color:#fff;box-shadow:0 4px 12px #c41e3a4d}.timer-action-btn.play:hover:not(:disabled){transform:scale(1.08);box-shadow:0 6px 16px #c41e3a66}.timer-action-btn.done{background:var(--bg-elevated);color:var(--accent-secondary)}.timer-action-btn.done:hover:not(:disabled){background:var(--accent-secondary);color:#fff;border-color:var(--accent-secondary)}.timer-action-btn.done:disabled{opacity:.3;cursor:not-allowed}.timer-action-btn.reset{background:var(--bg-elevated);color:var(--text-secondary)}.timer-action-btn.reset:hover{background:var(--bg-tertiary);color:var(--text-primary)}.timer-presets-row{display:flex;gap:8px}.preset-btn.active{background:#c41e3a26;border-color:var(--accent-primary);color:var(--accent-primary)}.compact-timer{position:relative;width:70px;height:70px;flex-shrink:0}.timer-svg-small{width:100%;height:100%;transform:rotate(-90deg)}.timer-svg-small .timer-track{fill:none;stroke:var(--bg-elevated, rgba(255, 255, 255, .08));stroke-width:6}.timer-svg-small .timer-progress{fill:none;stroke:var(--accent-primary);stroke-width:6;stroke-linecap:round;transition:stroke-dasharray 1s linear}.timer-svg-small .timer-progress.focus{stroke:var(--accent-primary)}.timer-svg-small .timer-progress.break{stroke:#f59e0b}.timer-content-small{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center}.timer-time-compact{font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--text-primary)}.timer-mode-compact{font-size:8px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:1px}.timer-controls-compact{display:flex;gap:6px}.timer-btn-compact{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--accent-primary),#9a1830);border:none;border-radius:50%;color:#fff;cursor:pointer;transition:all .15s}.timer-btn-compact:hover{transform:scale(1.1)}.timer-btn-compact.active{background:linear-gradient(135deg,#f59e0b,#d97706)}.timer-btn-compact.done{background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary))}.timer-btn-compact.reset{background:var(--bg-elevated);border:1px solid var(--border-medium);color:var(--text-secondary)}.timer-btn-compact.reset:hover{background:var(--bg-tertiary);color:var(--text-primary)}.timer-presets-compact{display:flex;flex-direction:column;gap:4px;margin-left:auto}.preset-btn-compact{padding:4px 8px;background:transparent;border:1px solid var(--border-subtle);border-radius:4px;color:var(--text-muted);font-size:10px;font-weight:600;cursor:pointer;transition:all .15s}.preset-btn-compact:hover{border-color:var(--border-medium);color:var(--text-secondary)}.preset-btn-compact.active{background:#c41e3a26;border-color:var(--accent-primary);color:var(--accent-primary)}.materials-section-full{display:flex;flex-direction:column;flex:1;min-height:0;overflow:hidden}.materials-content-full{flex:1;overflow-y:auto;padding-right:4px;display:flex;flex-direction:column;gap:10px}.materials-create-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;padding:6px 2px 2px}.materials-create-btn{min-height:88px;padding:14px 12px;border-radius:18px;border:1px solid rgba(255,255,255,.1);background:linear-gradient(180deg,#ffffff05,#ffffff07);color:var(--text-primary);display:inline-flex;align-items:center;justify-content:center;gap:12px;font-size:14px;font-weight:700;line-height:1.05;cursor:pointer;box-shadow:inset 0 1px #ffffff08;transition:background .16s ease,border-color .16s ease,color .16s ease}.materials-create-btn svg{width:18px;height:18px;flex-shrink:0;color:#ffffffd1}.materials-create-btn span{max-width:62px;white-space:normal;text-align:left}.materials-create-btn:hover{border-color:#ffffff29;background:linear-gradient(180deg,#ffffff08,#ffffff0b)}.materials-actions-row{position:sticky;top:0;z-index:6;display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:8px 2px 4px;background:linear-gradient(180deg,rgba(5,5,6,.94),rgba(5,5,6,.66) 72%,transparent)}.materials-action-btn{min-height:44px;border:1px solid var(--border-medium);border-radius:14px;background:#ffffff05;color:var(--text-primary);display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:13px;font-weight:700;cursor:pointer;transition:all .16s ease}.materials-action-btn:hover{border-color:#ffffff3d;background:#ffffff0d}.materials-create-hub{position:sticky;top:0;z-index:6;padding:8px 2px 4px;background:linear-gradient(180deg,rgba(5,5,6,.92),rgba(5,5,6,.62) 72%,transparent)}.materials-create-trigger{width:100%;border:1px solid rgba(255,255,255,.1);border-radius:14px;padding:10px 12px;background:linear-gradient(145deg,#ffffff0f,#ffffff04);color:var(--text-primary);display:flex;align-items:center;gap:10px;cursor:pointer;text-align:left;backdrop-filter:blur(18px) saturate(130%);-webkit-backdrop-filter:blur(18px) saturate(130%);transition:all .2s ease}.materials-create-trigger:hover{border-color:#ffffff29;transform:translateY(-1px);box-shadow:0 10px 24px #00000042}.materials-create-trigger.open{border-color:#c41e3a73;box-shadow:0 12px 26px #c41e3a2e}.materials-create-trigger-icon{width:28px;height:28px;flex-shrink:0;border-radius:9px;display:flex;align-items:center;justify-content:center;color:#ffd7d7;background:linear-gradient(135deg,#c41e3a7a,#c41e3a29);border:1px solid rgba(255,255,255,.15)}.materials-create-trigger-copy{flex:1;min-width:0;display:flex;flex-direction:column;gap:1px}.materials-create-trigger-copy strong{font-size:12px;letter-spacing:.01em}.materials-create-trigger-copy span{font-size:11px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.materials-create-chevron{color:var(--text-muted);transition:transform .18s ease}.materials-create-chevron.open{transform:rotate(180deg)}.materials-create-panel{margin-top:8px;padding:9px;border-radius:16px;border:1px solid rgba(255,255,255,.08);background:linear-gradient(160deg,#0e1013e6,#080a0cdb);display:grid;gap:8px;box-shadow:0 18px 30px #00000059}.materials-create-card{width:100%;border:1px solid rgba(255,255,255,.08);border-radius:12px;background:#ffffff08;color:var(--text-primary);padding:9px 10px;display:flex;align-items:center;gap:10px;text-align:left;cursor:pointer;transition:all .16s ease}.materials-create-card:hover{border-color:#c41e3a70;background:#c41e3a1a}.materials-create-card-icon{width:28px;height:28px;border-radius:9px;flex-shrink:0;display:flex;align-items:center;justify-content:center;background:#ffffff12;color:#ffffffe6}.materials-create-card-copy{min-width:0;display:flex;flex-direction:column;gap:1px}.materials-create-card-copy strong{font-size:12px}.materials-create-card-copy span{font-size:11px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.upload-dropzone-premium{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;min-height:200px;height:100%;border:1px solid rgba(255,255,255,.14);border-radius:16px;background:radial-gradient(circle at 12% 10%,rgba(196,30,58,.16),transparent 42%),linear-gradient(165deg,#ffffff0e,#ffffff04);color:#ffffffb8;font-size:13px;text-align:center;cursor:pointer;transition:all .22s;margin:2px 2px 0;padding:26px 14px;box-shadow:inset 0 0 0 1px #ffffff0a}.upload-dropzone-premium svg{color:#ffffffdb}.upload-dropzone-title{font-size:13px;font-weight:650;letter-spacing:.01em}.upload-dropzone-subtitle{font-size:11px;color:var(--text-muted)}.upload-dropzone-premium:hover{border-color:var(--accent-primary);color:var(--text-primary);transform:translateY(-1px);box-shadow:0 18px 36px #00000057}.materials-content-full.dragging .upload-dropzone-premium{border-color:var(--accent-primary);box-shadow:0 0 0 2px #c41e3a42,0 20px 38px #00000061}.materials-content-full.dragging .upload-dropzone{border-color:var(--accent-primary);box-shadow:0 0 0 2px #c41e3a3d,0 12px 26px #0000004d}.materials-import-inline-btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;width:100%;border-radius:11px;border:1px dashed rgba(255,255,255,.2);background:#ffffff05;color:var(--text-muted);font-size:11px;font-weight:600;letter-spacing:.01em;padding:10px 12px;margin-top:8px;cursor:pointer;transition:all .16s ease}.materials-import-inline-btn:hover{color:var(--text-primary);border-color:#c41e3a70;background:#c41e3a1a}.center-panel{flex:1;background:transparent;display:flex;flex-direction:column;overflow:hidden;position:relative}.right-sidebar{background:var(--glass-bg);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border-left:1px solid var(--glass-border);display:flex;flex-direction:column;overflow:auto;flex-shrink:0;container-type:inline-size}.right-sidebar:hover{border-left-color:var(--border-medium)}.header{height:72px;background:var(--glass-bg);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border-bottom:1px solid var(--glass-border);display:flex;align-items:center;justify-content:space-between;padding:0 var(--space-xl);flex-shrink:0;z-index:100;position:fixed;top:0;left:0;right:0}.bar-left{display:flex;align-items:center;gap:var(--space-md);min-width:200px}.bar-back{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;transition:all .2s}.bar-back:hover{background:var(--bg-elevated);color:var(--text-primary)}.bar-brand{display:flex;align-items:center;gap:var(--space-sm)}.bar-logo{width:36px;height:36px;background:linear-gradient(135deg,var(--accent-primary) 0%,var(--accent-secondary) 50%,var(--accent-tertiary) 100%);border-radius:10px;display:flex;align-items:center;justify-content:center;font-weight:800;color:#fff;font-size:18px;box-shadow:0 4px 20px #c41e3a4d;position:relative;overflow:hidden}.bar-logo:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(135deg,rgba(255,255,255,.2) 0%,transparent 50%);border-radius:inherit}.bar-title{font-weight:700;font-size:17px;letter-spacing:-.01em;background:linear-gradient(90deg,#fffffff2,#ffb4b4cc);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.bar-sep{color:var(--border-medium)}.bar-center{flex:1;display:flex;justify-content:center}.bar-right{display:flex;align-items:center;gap:24px;min-width:200px;justify-content:flex-end}.bar-stats-group{display:flex;align-items:center;gap:12px;padding-right:24px;border-right:1px solid var(--border-subtle)}.bar-stat{display:flex;align-items:center;gap:6px;padding:6px 12px;background:var(--bg-tertiary);border-radius:20px;font-size:13px;font-weight:600;color:var(--text-secondary);border:1px solid transparent}.bar-stat.fire{color:var(--accent-streak);background:color-mix(in srgb,var(--accent-streak) 16%,transparent)}.bar-stat.gold{color:var(--accent-gold);background:color-mix(in srgb,var(--accent-gold) 16%,transparent)}.bar-stat.bolt{color:var(--accent-cyan);background:color-mix(in srgb,var(--accent-cyan) 16%,transparent)}.stat-value{color:inherit}.xp-circle-container{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;cursor:pointer;transition:transform .2s ease}.xp-circle-container:hover{transform:scale(1.05)}.xp-circle{position:relative;width:48px;height:48px;display:flex;align-items:center;justify-content:center}.circular-chart{display:block;width:100%;max-width:100%;max-height:100%;transform:rotate(-90deg)}.circle-bg{fill:none;stroke:var(--bg-elevated);stroke-width:3}.circle{fill:none;stroke-width:3;stroke-linecap:round;stroke:url(#xp-gradient);filter:drop-shadow(0 0 4px rgba(34,197,94,.5));transition:stroke-dasharray .6s ease}.level-text{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;line-height:1;gap:1px}.level-label{font-size:8px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}.level-number{font-size:16px;font-weight:800;background:linear-gradient(135deg,var(--accent-secondary),#4ade80);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.xp-text-below{font-size:9px;font-weight:600;color:var(--text-muted);letter-spacing:.3px}.bar-avatar{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;border:2px solid var(--bg-secondary);box-shadow:0 0 0 2px var(--accent-primary);font-size:16px}.progress-bar{height:6px;background:var(--bg-elevated);border-radius:var(--radius-full);overflow:hidden}.progress-bar-fill{height:100%;border-radius:var(--radius-full);transition:width var(--transition-slow)}.progress-bar-fill.primary{background:linear-gradient(90deg,var(--accent-primary),var(--accent-pink))}.progress-bar-fill.success{background:linear-gradient(90deg,var(--accent-secondary),var(--accent-success))}.progress-bar-fill.gold{background:linear-gradient(90deg,var(--accent-gold),var(--accent-warm))}.progress-bar-fill.streak{background:linear-gradient(90deg,var(--accent-streak),var(--accent-gold))}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);border:none;border-radius:var(--radius-md);font-family:var(--font-family);font-size:var(--font-size-sm);font-weight:600;cursor:pointer;transition:all var(--transition-fast)}.btn-primary{background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));color:var(--text-primary);box-shadow:0 4px 15px #c41e3a66}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px #c41e3a80}.btn-primary:active{transform:scale(.97) translateY(0);box-shadow:0 2px 8px #c41e3a66}.btn:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-medium)}.btn-secondary:hover{background:var(--bg-elevated);border-color:var(--accent-primary)}.btn-secondary:active{transform:scale(.97)}.btn-success{background:linear-gradient(135deg,var(--accent-secondary),#9a1830);color:var(--text-primary);box-shadow:0 4px 15px #22c55e66}.btn-success:hover{transform:translateY(-2px);box-shadow:0 6px 20px #22c55e80}.btn-success:active{transform:scale(.97) translateY(0)}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover{background:var(--bg-tertiary);color:var(--text-primary)}.btn-ghost:active{transform:scale(.97)}.btn-icon{width:40px;height:40px;padding:0;border-radius:var(--radius-md)}.card{background:var(--bg-tertiary);border-radius:var(--radius-lg);border:1px solid var(--border-subtle);padding:var(--space-md)}.card-glass{background:var(--glass-bg);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--glass-border)}.card-elevated{box-shadow:var(--shadow-md)}.card-glow{box-shadow:var(--shadow-glow)}.sidebar-section{padding:var(--space-md);border-bottom:1px solid var(--border-subtle)}.sidebar-section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-md)}.sidebar-section-title{font-size:var(--font-size-sm);font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px}.curriculum-tree{flex:1;overflow-y:auto;padding:var(--space-md)}.curriculum-item{border-radius:var(--radius-md);margin-bottom:var(--space-sm);overflow:hidden}.curriculum-header{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);background:var(--bg-tertiary);cursor:pointer;transition:all var(--transition-fast)}.curriculum-header:hover{background:var(--bg-elevated)}.curriculum-header.active{background:linear-gradient(135deg,#c41e3a33,#8b15381a);border-left:3px solid var(--accent-primary)}.curriculum-icon{width:32px;height:32px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:var(--font-size-lg);flex-shrink:0}.curriculum-icon.subject{background:linear-gradient(135deg,var(--accent-primary),var(--accent-pink))}.curriculum-icon.chapter{background:linear-gradient(135deg,var(--accent-cyan),var(--accent-primary))}.curriculum-icon.pdf{background:linear-gradient(135deg,var(--accent-streak),var(--accent-gold))}.curriculum-info{flex:1;min-width:0}.curriculum-name{font-size:var(--font-size-sm);font-weight:500;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.curriculum-meta{font-size:var(--font-size-xs);color:var(--text-muted)}.curriculum-progress{width:50px;text-align:right}.curriculum-progress-text{font-size:var(--font-size-xs);font-weight:600;color:var(--accent-secondary)}.curriculum-children{padding-left:var(--space-lg)}.drop-zone{margin:var(--space-md);padding:var(--space-xl);border:2px dashed var(--border-medium);border-radius:var(--radius-lg);text-align:center;transition:all var(--transition-fast);cursor:pointer}.drop-zone:hover,.drop-zone.active{border-color:var(--accent-primary);background:#c41e3a1a}.drop-zone-icon{font-size:48px;margin-bottom:var(--space-md);opacity:.5}.drop-zone-text{font-size:var(--font-size-sm);color:var(--text-secondary)}.drop-zone-text strong{color:var(--accent-primary)}.pdf-viewer{flex:1;display:flex;flex-direction:column;overflow:hidden}.pdf-toolbar{display:flex;align-items:center;justify-content:space-between;padding:var(--space-md);background:var(--bg-secondary);border-bottom:1px solid var(--border-subtle)}.pdf-title{font-size:var(--font-size-base);font-weight:600;display:flex;align-items:center;gap:var(--space-sm)}.pdf-controls{display:flex;align-items:center;gap:var(--space-sm)}.pdf-page-nav{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-xs) var(--space-sm);background:var(--bg-tertiary);border-radius:var(--radius-md)}.pdf-page-input{width:50px;padding:var(--space-xs);background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--text-primary);font-size:var(--font-size-sm);text-align:center}.pdf-page-total{color:var(--text-muted);font-size:var(--font-size-sm)}.pdf-content{flex:1;overflow:auto;display:flex;justify-content:center;padding:var(--space-lg);background:var(--bg-primary)}.pdf-document{max-width:100%;box-shadow:var(--shadow-lg);border-radius:var(--radius-md);overflow:hidden}.pdf-empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:var(--space-2xl)}.pdf-empty-icon{font-size:80px;margin-bottom:var(--space-lg);opacity:.3}.pdf-empty-title{font-size:var(--font-size-xl);font-weight:600;color:var(--text-secondary);margin-bottom:var(--space-sm)}.pdf-empty-text{font-size:var(--font-size-sm);color:var(--text-muted);max-width:300px}.sidebar-topbar{display:flex;align-items:center;gap:4px;padding:8px 4px 0;margin:0 4px}.sidebar-tabs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:2px;padding:4px;margin:0;border-radius:12px;background:#ffffff0f;border:1px solid rgba(255,255,255,.1);box-shadow:0 8px 22px #00000029;min-width:0;overflow:hidden;flex:1}.sidebar-tab{min-width:0;max-width:100%;padding:8px 2px;background:transparent;border:1px solid transparent;border-radius:10px;color:#ffffffb3;font-family:var(--font-family);font-size:12px;font-weight:700;cursor:pointer;transition:background .15s ease,border-color .15s ease,color .15s ease,transform .15s ease;position:relative;display:inline-flex;align-items:center;justify-content:center;gap:3px}.sidebar-tab .sidebar-tab-icon{width:12px;height:12px}.sidebar-tab.icon-only{padding:10px 0}.sidebar-tab-icon{flex:0 0 auto}.sidebar-tab-label{display:block;min-width:0;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;line-height:1}.sidebar-tab:hover{color:#ffffffe0;background:#ffffff0f}.sidebar-tab:active{transform:scale(.96)}.sidebar-tab.active{color:#fffffff2;background:linear-gradient(180deg,#ffffff29,#ffffff14);border-color:#fff3}.sidebar-tab.locked{border-color:transparent;background:transparent}.sidebar-tab.locked:hover{border-color:#ffffff29;color:#ffffffe0}.sidebar-tab.locked.active{color:#fffffff2;background:linear-gradient(180deg,#ffffff29,#ffffff14);border-color:#fff3}.sidebar-tab-soon{flex:0 0 auto;margin-left:6px;padding:2px 6px;border-radius:999px;font-size:9px;font-weight:800;letter-spacing:.3px;text-transform:uppercase;color:#ffe8cdf2;background:#ffb3473d;border:1px solid rgba(255,179,71,.42)}.sidebar-collapse-btn{width:36px;height:36px;flex:0 0 auto;border-radius:10px;border:1px solid rgba(255,255,255,.12);background:#ffffff0f;color:#ffffffd1;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:background .15s ease,border-color .15s ease,color .15s ease}.sidebar-collapse-btn:hover{background:#ffffff1a;border-color:#ffffff38;color:#fffffff5}.sidebar-collapse-btn:active{transform:scale(.9)}.sidebar-collapse-btn:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px}@container (max-width: 360px){.sidebar-tab{padding:8px 2px;gap:3px}.sidebar-tab-label{font-size:11px}}@container (max-width: 280px){.sidebar-tab{padding:8px 4px;gap:0px}.sidebar-tab-label{display:none}}.sidebar-content{flex:1;overflow-y:auto;padding:var(--space-md);display:flex;flex-direction:column}.coming-soon-wrap{position:relative;display:flex;flex-direction:column;border-radius:14px;overflow:hidden;border:1px solid var(--border-subtle);background:#00000014;flex:1;min-height:0}.coming-soon-panel-header{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 14px;border-bottom:1px solid rgba(255,255,255,.08);background:#08090d8f}.coming-soon-panel-header h3{margin:0;font-size:13px;font-weight:700;color:#ffffffeb}.coming-soon-panel-pill{padding:4px 8px;border-radius:999px;font-size:10px;font-weight:700;letter-spacing:.25px;color:#ffe8cdf5;border:1px solid rgba(255,179,71,.45);background:#ffb34733}.coming-soon-blur{flex:1;min-height:0;filter:blur(14px) saturate(.85);opacity:.9;pointer-events:none;-webkit-user-select:none;user-select:none;height:auto}.coming-soon-blur>*{height:100%}.coming-soon-overlay{position:absolute;left:0;right:0;bottom:0;top:50px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:24px;text-align:center;background:radial-gradient(700px 260px at 50% 40%,rgba(196,30,58,.14),transparent 60%);animation:comingSoonFadeIn .35s ease both}@keyframes comingSoonFadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.coming-soon-title{font-size:16px;font-weight:800;color:var(--text-primary)}.coming-soon-subtitle{font-size:12px;color:var(--text-muted)}.coming-soon-fomo{margin-top:2px;padding:8px 10px;border-radius:10px;font-size:11px;font-weight:700;letter-spacing:.2px;color:#ffe8cdf5;border:1px solid rgba(255,179,71,.34);background:#ffb34724}.feature-coming-soon-wrap{min-height:0}.feature-coming-soon-blur{display:flex;align-items:stretch;justify-content:stretch;padding:14px}.coming-soon-preview-card{width:100%;min-height:100%;border-radius:14px;padding:16px;background:linear-gradient(155deg,#ffffff14,#ffffff05);border:1px solid rgba(255,255,255,.2);box-shadow:0 22px 55px #00000059;display:flex;flex-direction:column;gap:10px}.coming-soon-preview-chip{align-self:flex-start;padding:4px 8px;border-radius:999px;font-size:11px;font-weight:700;letter-spacing:.2px;color:#ffffffeb;border:1px solid rgba(255,255,255,.22);background:#c41e3a33}.coming-soon-preview-line{font-size:13px;line-height:1.4;color:#ffffffe0;border-radius:10px;padding:9px 11px;border:1px solid rgba(255,255,255,.14);background:#00000038}.coming-soon-cta{margin-top:10px;padding:10px 14px;min-width:210px;border-radius:12px;font-weight:800;font-size:13px;letter-spacing:.2px;color:#ffffffeb;background:#ffffff14;border:1px solid rgba(255,255,255,.18);cursor:not-allowed;opacity:.9;display:inline-flex;align-items:center;justify-content:center;text-align:center}.coming-soon-cta:disabled{filter:saturate(.95)}.summary-section{margin-bottom:var(--space-lg)}.summary-section-header{display:flex;align-items:center;gap:var(--space-sm);margin-bottom:var(--space-md)}.summary-badge{padding:var(--space-xs) var(--space-sm);background:linear-gradient(135deg,var(--accent-primary),var(--accent-pink));border-radius:var(--radius-sm);font-size:var(--font-size-xs);font-weight:600}.summary-title{font-size:var(--font-size-base);font-weight:600}.summary-header-section{margin-bottom:var(--space-lg);padding-bottom:var(--space-md);border-bottom:1px solid var(--border-subtle)}.summary-main-title{font-size:18px;font-weight:700;background:linear-gradient(135deg,var(--accent-primary),var(--accent-pink));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:8px;line-height:1.3}.summary-subtitle{font-size:13px;font-style:italic;color:var(--text-muted);margin:0;line-height:1.5}.summary-card{background:transparent;border:0;border-radius:0;padding:0;margin:0 0 var(--space-md) 0}.summary-heading{font-size:var(--font-size-sm);font-weight:600;color:var(--accent-primary);margin-bottom:var(--space-sm)}.summary-text{font-size:var(--font-size-sm);color:var(--text-secondary);line-height:1.7}.summary-bullets{display:flex;flex-direction:column;gap:10px}.summary-bullet-item{position:relative;padding-left:20px;font-size:var(--font-size-sm);color:var(--text-secondary);line-height:1.6}.summary-bullet-item:before{content:"•";position:absolute;left:0;top:0;color:var(--accent-primary);font-weight:700;font-size:16px}.summary-bullet-item:nth-child(2n):before{color:var(--accent-pink)}.summary-bullet-item:nth-child(3n):before{color:var(--accent-cyan)}.tip-card{background:linear-gradient(135deg,#c41e3a1a,#5c0f260d);border:1px solid rgba(196,30,58,.2);border-radius:var(--radius-lg);padding:var(--space-md);margin-bottom:var(--space-md)}.tip-header{display:flex;align-items:center;gap:var(--space-sm);margin-bottom:var(--space-sm)}.tip-icon{font-size:var(--font-size-xl)}.tip-label{font-size:var(--font-size-xs);font-weight:600;color:var(--accent-gold);text-transform:uppercase;letter-spacing:.5px}.tip-title{font-size:var(--font-size-base);font-weight:600;margin-bottom:var(--space-sm)}.tip-text{font-size:var(--font-size-sm);color:var(--text-secondary);line-height:1.6}.error-boundary{display:flex;align-items:center;justify-content:center;min-height:200px;padding:var(--space-lg)}.error-boundary-content{text-align:center;max-width:280px}.error-boundary-content h3{font-size:16px;font-weight:600;color:var(--text-primary);margin:0 0 8px}.error-boundary-content p{font-size:13px;color:var(--text-muted);margin:0 0 16px}.quiz-container{display:flex;flex-direction:column;height:100%}.quiz-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-md)}.quiz-progress{display:flex;align-items:center;gap:var(--space-sm)}.quiz-progress-bar{width:100px;height:8px;background:var(--bg-elevated);border-radius:var(--radius-full);overflow:hidden}.quiz-progress-fill{height:100%;background:linear-gradient(90deg,var(--accent-primary),var(--accent-pink));transition:width var(--transition-normal)}.quiz-progress-text{font-size:var(--font-size-sm);color:var(--text-muted)}.quiz-hearts{display:flex;gap:var(--space-xs)}.quiz-heart{font-size:var(--font-size-lg);transition:transform var(--transition-fast)}.quiz-heart.lost{filter:grayscale(1);opacity:.3}.quiz-question{flex:1}.quiz-question-text{font-size:var(--font-size-lg);font-weight:600;margin-bottom:var(--space-lg);text-align:center}.quiz-options{display:flex;flex-direction:column;gap:var(--space-sm)}.quiz-option{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md);background:var(--bg-tertiary);border:2px solid var(--border-subtle);border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-fast)}.quiz-option:hover{border-color:var(--accent-primary);background:#c41e3a1a}.quiz-option.selected{border-color:var(--accent-primary);background:#c41e3a33}.quiz-option.correct{border-color:#22c55e;background:#22c55e33}.quiz-option.incorrect{border-color:#ef4444;background:#ef444433}.quiz-option-number{width:32px;height:32px;border-radius:var(--radius-sm);background:var(--bg-elevated);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:var(--font-size-sm);flex-shrink:0}.quiz-option-text{font-size:var(--font-size-sm);line-height:1.5;flex:1;text-align:left}.quiz-footer{margin-top:var(--space-lg);text-align:center}.quiz-result{padding:var(--space-lg);border-radius:var(--radius-lg);margin-bottom:var(--space-md)}.quiz-result.correct{background:linear-gradient(135deg,#22c55e33,#22c55e0d);border:1px solid var(--accent-secondary)}.quiz-result.incorrect{background:linear-gradient(135deg,#ef444433,#ef44440d);border:1px solid #ef4444}.quiz-result-icon{font-size:48px;margin-bottom:var(--space-sm)}.quiz-result-title{font-size:var(--font-size-lg);font-weight:700}.quiz-reward{display:inline-flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);background:var(--bg-tertiary);border-radius:var(--radius-full);font-weight:600;margin-top:var(--space-sm)}.flashcards{display:flex;flex-direction:column;gap:12px;height:100%;min-height:0}.flashcards-top{display:flex;align-items:center;justify-content:space-between;gap:10px}.flashcards-count{font-size:12px;font-weight:800;color:var(--text-secondary)}.flashcards-actions{display:inline-flex;align-items:center;gap:8px}.flashcards-btn{width:34px;height:34px;border-radius:12px;border:1px solid rgba(255,255,255,.12);background:#ffffff0f;color:#ffffffdb;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:background .15s ease,border-color .15s ease,transform .15s ease}.flashcards-btn:hover{background:#ffffff1a;border-color:#ffffff2e}.flashcards-btn:active{transform:scale(.88)}.flashcard{position:relative;border-radius:16px;border:1px solid rgba(255,255,255,.12);background:radial-gradient(700px 320px at 50% 0%,#c41e3a2e,#ffffff0f);box-shadow:0 18px 50px #00000059;padding:18px;text-align:left;cursor:pointer;min-height:260px;flex:1;min-height:0;perspective:900px;transform-style:preserve-3d;transition:transform .38s cubic-bezier(.175,.885,.32,1.1),box-shadow .25s ease;overflow:hidden}.flashcard:hover{transform:translateY(-2px);box-shadow:0 24px 60px #00000073}.flashcard:active:not(.flipped){transform:scale(.99) translateY(0)}.flashcard-face{position:absolute;top:0;right:0;bottom:0;left:0;padding:18px;backface-visibility:hidden;display:flex;flex-direction:column;gap:10px}.flashcard-face.back,.flashcard.flipped{transform:rotateY(180deg)}.flashcard-label{font-size:10px;font-weight:900;letter-spacing:.28px;color:#ffffff8c;text-transform:uppercase}.flashcard-text{font-size:14px;line-height:1.45;color:#ffffffeb;overflow:auto;padding-right:6px}.flashcards-nav{display:flex;align-items:center;justify-content:space-between;gap:10px}.flashcards-nav-btn{flex:1;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 12px;border-radius:14px;border:1px solid rgba(255,255,255,.12);background:#ffffff0f;color:#ffffffeb;cursor:pointer;transition:background .15s ease,border-color .15s ease,transform .15s ease}.flashcards-nav-btn:hover:not(:disabled){background:#ffffff1a;border-color:#fff3}.flashcards-nav-btn:active:not(:disabled){transform:scale(.96)}.flashcards-nav-btn:disabled{opacity:.45;cursor:not-allowed}.flashcards-empty{height:100%;min-height:240px;border-radius:16px;border:1px solid rgba(255,255,255,.1);background:#ffffff0a;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;text-align:center;padding:24px}.flashcards-empty-icon{font-size:34px;opacity:.9}.flashcards-empty-title{font-size:14px;font-weight:900;color:#ffffffeb}.flashcards-empty-subtitle{font-size:12px;color:#ffffffa6}.timer-container{background:linear-gradient(135deg,#c41e3a1a,#8b15380d);border:1px solid rgba(196,30,58,.2);border-radius:var(--radius-lg);padding:var(--space-lg);text-align:center}.timer-display{font-size:var(--font-size-3xl);font-weight:800;font-variant-numeric:tabular-nums;margin-bottom:var(--space-md)}.timer-label{font-size:var(--font-size-sm);color:var(--text-muted);margin-bottom:var(--space-md)}.timer-controls{display:flex;justify-content:center;gap:var(--space-sm)}.badge-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-md)}.badge-item{display:flex;flex-direction:column;align-items:center;padding:var(--space-md);background:var(--bg-tertiary);border-radius:var(--radius-lg);text-align:center;transition:all var(--transition-fast)}.badge-item.locked{opacity:.5;filter:grayscale(1)}.badge-item:not(.locked):hover{transform:translateY(-4px);box-shadow:var(--shadow-glow)}.badge-icon{font-size:32px;margin-bottom:var(--space-sm)}.badge-name{font-size:var(--font-size-xs);font-weight:600;color:var(--text-secondary)}.milestone{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md);background:var(--bg-tertiary);border-radius:var(--radius-md);margin-bottom:var(--space-sm)}.milestone-icon-wrapper{position:relative}.milestone-icon{width:40px;height:40px;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;font-size:var(--font-size-lg)}.milestone-icon.completed{background:linear-gradient(135deg,var(--accent-secondary),#9a1830)}.milestone-icon.pending{background:var(--bg-elevated);border:2px dashed var(--border-medium)}.milestone-check{position:absolute;bottom:-4px;right:-4px;width:18px;height:18px;background:var(--accent-secondary);border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;font-size:10px;border:2px solid var(--bg-tertiary)}.milestone-info{flex:1}.milestone-name{font-size:var(--font-size-sm);font-weight:600}.milestone-desc{font-size:var(--font-size-xs);color:var(--text-muted)}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}@keyframes glow{0%,to{box-shadow:0 0 5px var(--accent-primary)}50%{box-shadow:0 0 30px var(--accent-primary),0 0 60px var(--accent-primary)}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-5px)}}@keyframes coinSpin{0%{transform:rotateY(0)}to{transform:rotateY(360deg)}}@keyframes xpGain{0%{opacity:1;transform:translateY(0) scale(1)}to{opacity:0;transform:translateY(-30px) scale(1.5)}}.animate-pulse{animation:pulse 2s ease-in-out infinite}.animate-bounce{animation:bounce 1s ease-in-out infinite}.animate-shake{animation:shake .5s ease-in-out}.animate-glow{animation:glow 2s ease-in-out infinite}.animate-float{animation:float 3s ease-in-out infinite}.xp-popup{position:fixed;pointer-events:none;z-index:1000;animation:xpGain 1s ease-out forwards}.xp-popup-content{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);background:linear-gradient(135deg,var(--accent-secondary),#9a1830);border-radius:var(--radius-full);font-weight:700;color:#fff;box-shadow:var(--shadow-lg)}.streak-calendar{display:grid;grid-template-columns:repeat(7,1fr);gap:4px}.streak-day{aspect-ratio:1;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:var(--font-size-xs);font-weight:500}.streak-day.active{background:linear-gradient(135deg,var(--accent-streak),var(--accent-gold));color:var(--text-primary)}.streak-day.inactive{background:var(--bg-elevated);color:var(--text-muted)}.skeleton{background:linear-gradient(90deg,var(--bg-tertiary) 25%,var(--bg-elevated) 50%,var(--bg-tertiary) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:var(--radius-md)}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.empty-state{text-align:center;padding:var(--space-2xl)}.empty-state-icon{font-size:64px;margin-bottom:var(--space-lg);opacity:.3}.empty-state-title{font-size:var(--font-size-lg);font-weight:600;color:var(--text-secondary);margin-bottom:var(--space-sm)}.empty-state-text{font-size:var(--font-size-sm);color:var(--text-muted)}.tooltip{position:relative}.tooltip:after{content:attr(data-tooltip);position:absolute;bottom:100%;left:50%;transform:translate(-50%);padding:var(--space-sm) var(--space-md);background:var(--bg-elevated);border-radius:var(--radius-sm);font-size:var(--font-size-xs);white-space:nowrap;opacity:0;visibility:hidden;transition:all var(--transition-fast)}.tooltip:hover:after{opacity:1;visibility:visible}.dashboard{flex:1;overflow-y:auto;padding:var(--space-xl);background:var(--bg-primary)}.dashboard-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-md);margin-bottom:var(--space-xl)}.stat-card{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-lg);background:var(--bg-secondary);border-radius:var(--radius-lg);border:1px solid var(--border-subtle)}.stat-card-icon{width:48px;height:48px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;color:#fff}.stat-card-info{display:flex;flex-direction:column}.stat-card-value{font-size:var(--font-size-2xl);font-weight:700}.stat-card-label{font-size:var(--font-size-sm);color:var(--text-muted)}.dashboard-section{margin-bottom:var(--space-xl)}.dashboard-section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-lg)}.dashboard-section-header h2{font-size:var(--font-size-xl);font-weight:600}.dashboard-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-2xl);background:var(--bg-secondary);border-radius:var(--radius-xl);border:2px dashed var(--border-medium);text-align:center}.dashboard-empty-icon{font-size:64px;margin-bottom:var(--space-lg)}.dashboard-empty h3{font-size:var(--font-size-lg);margin-bottom:var(--space-sm)}.dashboard-empty p{color:var(--text-muted);margin-bottom:var(--space-lg);max-width:300px}.courses-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--space-lg)}.course-card{background:var(--bg-secondary);border-radius:var(--radius-xl);overflow:hidden;cursor:pointer;transition:all var(--transition-normal);border:1px solid var(--border-subtle)}.course-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--accent-primary)}.course-card:active{transform:translateY(-1px) scale(.99)}.course-card-header{height:100px;display:flex;align-items:center;justify-content:center;position:relative}.course-card-icon{font-size:48px}.course-card-delete{position:absolute;top:8px;right:8px;width:28px;height:28px;border-radius:var(--radius-sm);background:#0006;border:none;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;transition:all var(--transition-fast)}.course-card:hover .course-card-delete{opacity:1}.course-card-delete:hover{background:#ef4444}.course-card-body{padding:var(--space-md)}.course-card-title{font-size:var(--font-size-base);font-weight:600;margin-bottom:var(--space-xs)}.course-card-meta{font-size:var(--font-size-sm);color:var(--text-muted);margin-bottom:var(--space-md)}.course-card-progress{display:flex;align-items:center;gap:var(--space-sm)}.course-card-progress .progress-bar{flex:1}.course-card-progress-text{font-size:var(--font-size-sm);font-weight:600;color:var(--accent-secondary)}.course-card-footer{display:flex;align-items:center;justify-content:space-between;padding:var(--space-md);background:var(--bg-tertiary);font-size:var(--font-size-sm);font-weight:500;color:var(--accent-primary)}.course-card-add{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:220px;border:2px dashed var(--border-medium);background:transparent;color:var(--text-muted);gap:var(--space-sm)}.course-card-add:hover{border-color:var(--accent-primary);color:var(--accent-primary);background:#c41e3a0d}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000c;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);animation:modalOverlayIn .22s ease both}@keyframes modalOverlayIn{0%{opacity:0;-webkit-backdrop-filter:blur(0px);backdrop-filter:blur(0px)}to{opacity:1;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}}.modal{background:var(--bg-secondary);border-radius:var(--radius-xl);padding:var(--space-xl);width:100%;max-width:440px;border:1px solid var(--border-subtle);animation:modalContentIn .28s cubic-bezier(.175,.885,.32,1.2) both}@keyframes modalContentIn{0%{opacity:0;transform:scale(.94) translateY(8px)}to{opacity:1;transform:scale(1) translateY(0)}}.modal-title{font-size:var(--font-size-xl);font-weight:600;margin-bottom:var(--space-lg)}.modal-field{margin-bottom:var(--space-lg)}.modal-field label{display:block;font-size:var(--font-size-sm);font-weight:500;color:var(--text-secondary);margin-bottom:var(--space-sm)}.modal-field input[type=text]{width:100%;padding:var(--space-md);background:var(--bg-tertiary);border:1px solid var(--border-medium);border-radius:var(--radius-md);color:var(--text-primary);font-size:var(--font-size-base);font-family:var(--font-family);transition:border-color .18s ease,box-shadow .18s ease}.modal-field input[type=text]:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px #d640451f}.modal-field input[type=text]::placeholder{color:var(--text-muted)}.icon-picker{display:flex;flex-wrap:wrap;gap:var(--space-sm)}.icon-option{width:40px;height:40px;border:2px solid var(--border-subtle);border-radius:var(--radius-md);background:var(--bg-tertiary);font-size:20px;cursor:pointer;transition:all var(--transition-fast)}.icon-option:hover{border-color:var(--accent-primary)}.icon-option.selected{border-color:var(--accent-primary);background:#c41e3a33}.color-picker{display:flex;gap:var(--space-sm)}.color-option{width:36px;height:36px;border:3px solid transparent;border-radius:var(--radius-full);cursor:pointer;transition:all var(--transition-fast)}.color-option:hover{transform:scale(1.1)}.color-option.selected{border-color:#fff;box-shadow:0 0 0 2px var(--bg-secondary),0 0 0 4px currentColor}.modal-actions{display:flex;gap:var(--space-sm);justify-content:flex-end;margin-top:var(--space-lg)}.animate-spin,.spinning{animation:spin 1s linear infinite}.course-header-section{padding:var(--space-md);border-bottom:1px solid var(--border-subtle)}.back-btn{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);background:transparent;border:none;color:var(--text-muted);font-family:var(--font-family);font-size:var(--font-size-sm);cursor:pointer;border-radius:var(--radius-md);transition:all var(--transition-fast);margin-bottom:var(--space-md)}.back-btn:hover{background:var(--bg-tertiary);color:var(--text-primary)}.course-info-card{display:flex;align-items:flex-start;gap:var(--space-md);padding:var(--space-md);border-radius:var(--radius-lg);border:1px solid var(--border-subtle)}.course-emoji{font-size:36px;flex-shrink:0}.course-details{flex:1;min-width:0}.course-name{font-size:var(--font-size-base);font-weight:600;margin-bottom:var(--space-xs);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.course-meta{display:flex;align-items:center;gap:var(--space-sm);font-size:var(--font-size-xs);color:var(--text-muted);margin-bottom:var(--space-sm)}.course-progress-bar{height:4px}.upload-section{padding:var(--space-md);border-bottom:1px solid var(--border-subtle)}.upload-zone{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-lg);border:2px dashed var(--border-medium);border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-fast);text-align:center}.upload-zone:hover,.upload-zone.dragging{border-color:var(--accent-primary);background:#c41e3a14}.upload-zone.dragging{transform:scale(1.02)}.upload-zone.uploading{border-style:solid;border-color:var(--accent-primary);background:#c41e3a0d;cursor:wait}.upload-icon{color:var(--text-muted);transition:color var(--transition-fast)}.upload-zone:hover .upload-icon,.upload-zone.dragging .upload-icon{color:var(--accent-primary)}.upload-text{font-size:var(--font-size-sm);color:var(--text-secondary)}.upload-text strong{color:var(--accent-primary)}.upload-hint{font-size:var(--font-size-xs);color:var(--text-muted)}.pdf-list-section{flex:1;display:flex;flex-direction:column;overflow:hidden;border-bottom:1px solid var(--border-subtle)}.section-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-md);cursor:pointer;-webkit-user-select:none;user-select:none}.section-header:hover{background:var(--bg-tertiary)}.section-header-left{display:flex;align-items:center;gap:var(--space-sm);font-size:var(--font-size-sm);font-weight:500;color:var(--text-secondary)}.pdf-count{padding:2px 8px;background:var(--bg-tertiary);border-radius:var(--radius-full);font-size:var(--font-size-xs);font-weight:600;color:var(--text-muted)}.pdf-list{flex:1;overflow-y:auto;padding:0 var(--space-sm) var(--space-sm)}.pdf-list-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-xl);text-align:center;color:var(--text-muted)}.pdf-list-empty svg{opacity:.3;margin-bottom:var(--space-md)}.pdf-list-empty p{font-weight:500;color:var(--text-secondary);margin-bottom:var(--space-xs)}.pdf-list-empty span{font-size:var(--font-size-xs)}.pdf-item{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);margin-bottom:2px;position:relative;overflow:visible}.pdf-item:hover{background:var(--bg-tertiary)}.pdf-item:active{transform:scale(.98)}.pdf-item.active{background:linear-gradient(135deg,#c41e3a26,#8b153814);border-left:3px solid var(--accent-primary)}.pdf-item-number{width:24px;height:24px;background:var(--bg-tertiary);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:var(--font-size-xs);font-weight:600;color:var(--text-muted);flex-shrink:0}.pdf-item.active .pdf-item-number{background:var(--accent-primary);color:#fff}.pdf-item-info{flex:1;min-width:0}.pdf-item-title-row{display:flex;align-items:center;gap:8px;min-width:0;margin-bottom:4px}.pdf-item-name{display:block;font-size:var(--font-size-sm);font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:0;min-width:0}.pdf-item-pages{flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;padding:2px 6px;border-radius:999px;border:1px solid rgba(148,163,184,.3);background:#0f172a6b;color:#e2e8f0db;font-size:10px;font-weight:600;letter-spacing:.01em;line-height:1}.pdf-item-progress{display:flex;align-items:center;gap:var(--space-sm)}.pdf-item-progress .progress-bar.mini{flex:1;height:3px}.pdf-item-percent{font-size:10px;font-weight:600;color:var(--accent-secondary);min-width:28px;text-align:right}.pdf-reupload-warning{display:flex;align-items:center;justify-content:center;color:#f97316;animation:pulse-warning 2s infinite}@keyframes pulse-warning{0%,to{opacity:1}50%{opacity:.5}}.pdf-item.needs-reupload{opacity:.7;border-color:#f97316}.timer-section{display:flex;flex-direction:column;align-items:center;gap:16px;padding:24px 16px;border-bottom:1px solid var(--border-subtle);background:linear-gradient(180deg,rgba(196,30,58,.05),transparent)}.timer-display{position:relative;display:flex;align-items:center;justify-content:center}.timer-ring{width:140px;height:140px;transform:rotate(-90deg)}.timer-ring .timer-track{fill:none;stroke:var(--bg-elevated, rgba(255, 255, 255, .08));stroke-width:8;stroke-linecap:round}.timer-ring .timer-progress{fill:none;stroke:var(--accent-primary);stroke-width:8;stroke-linecap:round;transition:stroke-dasharray 1s linear}.timer-ring .timer-progress.focus{stroke:var(--accent-primary)}.timer-ring .timer-progress.break{stroke:#c41e3a}.timer-center{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;pointer-events:none}.timer-time{font-size:28px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--text-primary);letter-spacing:-1px}.timer-mode{font-size:11px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:1px}.timer-buttons{display:flex;gap:var(--space-sm)}.timer-btn{width:40px;height:40px;border-radius:50%;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease}.timer-btn.primary{background:linear-gradient(135deg,#c41e3a,#059669);color:#fff;box-shadow:0 4px 12px #10b9814d}.timer-btn.primary:hover{transform:scale(1.08);box-shadow:0 6px 16px #10b98166}.timer-btn.secondary{background:var(--bg-elevated, rgba(255, 255, 255, .08));color:var(--text-secondary);border:1px solid var(--border-medium, rgba(255, 255, 255, .1))}.timer-btn.secondary:hover{background:var(--bg-tertiary);color:var(--text-primary)}.timer-btn.success{background:linear-gradient(135deg,#c41e3a,#059669);color:#fff;box-shadow:0 2px 8px #10b9814d}.timer-btn.success:hover{transform:translateY(-2px);box-shadow:0 4px 12px #10b98166}.timer-btn.start{background:var(--accent-secondary);color:#fff}.timer-btn.start:hover{background:#9a1830}.timer-btn.pause{background:var(--accent-gold);color:#1a1a25}.timer-btn.reset{background:var(--bg-elevated);color:var(--text-secondary)}.timer-btn.reset:hover{background:var(--bg-secondary)}.timer-presets{display:flex;gap:8px;justify-content:center}.preset-btn{padding:5px 10px;background:var(--bg-secondary, rgba(255, 255, 255, .05));border:1px solid var(--border-subtle, rgba(255, 255, 255, .08));border-radius:6px;color:var(--text-muted);font-size:11px;font-weight:600;cursor:pointer;transition:all .15s ease}.preset-btn:hover{background:var(--bg-tertiary);border-color:var(--border-medium);color:var(--text-secondary)}.preset-btn.active{background:#c41e3a26;border-color:var(--accent-primary, var(--accent-primary));color:var(--accent-primary, var(--accent-primary))}.badges-section{padding:var(--space-md)}.badges-grid{display:flex;gap:var(--space-sm);flex-wrap:wrap;margin-top:var(--space-sm)}.badge-mini{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border-radius:var(--radius-md);font-size:18px;transition:transform var(--transition-fast)}.badge-mini:hover{transform:scale(1.1)}.badge-mini.locked{opacity:.3;filter:grayscale(1)}.badge-mini.unlocked{box-shadow:0 0 12px #fbbf244d}.dashboard-welcome{display:flex;align-items:center;justify-content:space-between;padding:var(--space-xl);background:linear-gradient(135deg,var(--bg-secondary),var(--bg-tertiary));border-radius:var(--radius-xl);margin-bottom:var(--space-xl);border:1px solid var(--border-subtle)}.welcome-text h1{font-size:var(--font-size-2xl);font-weight:700;margin-bottom:var(--space-xs)}.welcome-text p{color:var(--text-muted)}.welcome-streak{display:flex;flex-direction:column;align-items:center;gap:var(--space-xs)}.streak-badge{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);background:linear-gradient(135deg,var(--accent-streak),var(--accent-gold));border-radius:var(--radius-full);color:#fff}.streak-number{font-size:var(--font-size-xl);font-weight:700}.streak-label{font-size:var(--font-size-xs);color:var(--text-muted)}.section-subtitle{font-size:var(--font-size-sm);color:var(--text-muted);margin-top:2px}.stat-card-primary{border-left:3px solid var(--accent-primary)}.stat-card-success{border-left:3px solid var(--accent-secondary)}.stat-card-gold{border-left:3px solid var(--accent-gold)}.stat-card-purple{border-left:3px solid var(--accent-primary)}.stat-card{justify-content:space-between}.stat-card-content{display:flex;flex-direction:column}.stat-card-icon-wrapper{width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border-radius:var(--radius-md);color:var(--text-muted)}.empty-illustration{margin-bottom:var(--space-lg)}.empty-circle{width:100px;height:100px;background:linear-gradient(135deg,var(--accent-primary),var(--accent-pink));border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;margin:0 auto;color:#fff;animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{transform:scale(1);opacity:1}50%{transform:scale(1.05);opacity:.9}}.btn-lg{padding:var(--space-md) var(--space-xl);font-size:var(--font-size-base)}.course-card-stats{display:flex;align-items:center;gap:var(--space-md);margin-bottom:var(--space-md)}.course-stat{display:flex;align-items:center;gap:4px;font-size:var(--font-size-xs);color:var(--text-muted)}.quick-actions{display:flex;flex-direction:column;gap:var(--space-sm)}.quick-action-btn{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md);background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-fast);text-align:left;font-family:var(--font-family)}.quick-action-btn:hover{background:var(--bg-tertiary);border-color:var(--accent-primary)}.quick-action-icon{font-size:24px}.quick-action-text{flex:1;display:flex;flex-direction:column}.quick-action-text strong{font-size:var(--font-size-sm);font-weight:600;color:var(--text-primary)}.quick-action-text small{font-size:var(--font-size-xs);color:var(--text-muted)}.course-preview{display:flex;align-items:stretch;background:var(--bg-tertiary);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border-subtle)}.preview-header{width:80px;display:flex;align-items:center;justify-content:center}.preview-icon{font-size:32px}.preview-body{flex:1;padding:var(--space-md);display:flex;align-items:center}.preview-title{font-weight:600;color:var(--text-secondary)}.modal-header{margin-bottom:var(--space-lg)}.modal-subtitle{font-size:var(--font-size-sm);color:var(--text-muted);margin-top:var(--space-xs)}.modal-body{margin-bottom:var(--space-lg)}.add-icon-wrapper{width:64px;height:64px;background:var(--bg-tertiary);border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;margin-bottom:var(--space-sm);transition:all var(--transition-fast)}.course-card-add:hover .add-icon-wrapper{background:#c41e3a33;color:var(--accent-primary)}.duo-dashboard{flex:1;overflow-y:auto;background:linear-gradient(180deg,var(--bg-secondary) 0%,var(--bg-primary) 100%)}.duo-hero{padding:var(--space-xl) var(--space-2xl);background:linear-gradient(135deg,var(--bg-secondary) 0%,rgba(196,30,58,.1) 100%);border-bottom:1px solid var(--border-subtle)}.duo-hero-content{display:flex;align-items:center;gap:var(--space-xl);margin-bottom:var(--space-xl)}.duo-mascot{position:relative;flex-shrink:0}.mascot-body{font-size:64px;animation:mascotBounce 2s ease-in-out infinite}.mascot-glow{position:absolute;top:-20px;right:-20px;bottom:-20px;left:-20px;background:radial-gradient(circle,rgba(196,30,58,.3) 0%,transparent 70%);border-radius:50%;animation:pulseGlow 2s ease-in-out infinite}@keyframes mascotBounce{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}@keyframes pulseGlow{0%,to{opacity:.5;transform:scale(1)}50%{opacity:1;transform:scale(1.1)}}.duo-greeting h1{font-size:var(--font-size-3xl);font-weight:800;margin-bottom:var(--space-xs)}.fire-emoji{animation:fireWiggle .5s ease-in-out infinite}@keyframes fireWiggle{0%,to{transform:rotate(-5deg)}50%{transform:rotate(5deg)}}.duo-subtitle{font-size:var(--font-size-lg);color:var(--text-muted)}.duo-stats-row{display:flex;gap:var(--space-md)}.duo-stat{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-md) var(--space-lg);background:var(--bg-tertiary);border-radius:var(--radius-xl);border:2px solid var(--border-subtle);transition:all var(--transition-fast)}.duo-stat:hover{transform:translateY(-2px);border-color:var(--border-medium)}.duo-stat.streak{border-color:#f973164d}.duo-stat.streak .duo-stat-icon{color:var(--accent-streak)}.duo-stat.xp{border-color:#22c55e4d}.duo-stat.xp .duo-stat-icon{color:var(--accent-secondary)}.duo-stat.coins{border-color:#fbbf244d}.duo-stat.coins .coin-icon{font-size:20px}.duo-stat.level{border-color:#8b15384d}.duo-stat.level .duo-stat-icon{color:var(--accent-primary)}.duo-stat-icon{width:24px;height:24px}.duo-stat-info{display:flex;flex-direction:column}.duo-stat-value{font-size:var(--font-size-lg);font-weight:700;line-height:1}.duo-stat-label{font-size:var(--font-size-xs);color:var(--text-muted)}.duo-main{display:grid;grid-template-columns:1fr 320px;gap:var(--space-xl);padding:var(--space-xl) var(--space-2xl);max-width:1400px;margin:0 auto}.duo-courses-section{min-width:0}.duo-section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-lg)}.duo-section-header h2{display:flex;align-items:center;gap:var(--space-sm);font-size:var(--font-size-xl);font-weight:700}.duo-btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-lg);border:none;border-radius:var(--radius-xl);font-family:var(--font-family);font-size:var(--font-size-sm);font-weight:700;cursor:pointer;transition:all var(--transition-fast);text-transform:uppercase;letter-spacing:.5px}.duo-btn-primary{background:linear-gradient(180deg,#58cc02,#4caf00);color:#fff;box-shadow:0 4px #3d8a00,0 6px 20px #58cc024d}.duo-btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px #3d8a00,0 8px 25px #58cc0266}.duo-btn-primary:active{transform:translateY(2px);box-shadow:0 2px #3d8a00}.duo-btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}.duo-btn-ghost{background:transparent;color:var(--text-secondary);border:2px solid var(--border-medium)}.duo-btn-ghost:hover{background:var(--bg-tertiary);border-color:var(--text-muted)}.duo-btn-lg{padding:var(--space-md) var(--space-xl);font-size:var(--font-size-base)}.duo-empty-courses{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-2xl);background:var(--bg-secondary);border-radius:var(--radius-xl);border:2px dashed var(--border-medium);text-align:center}.duo-empty-icon{width:100px;height:100px;background:linear-gradient(135deg,var(--accent-primary),var(--accent-pink));border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:var(--space-lg);color:#fff;animation:pulse 2s ease-in-out infinite}.duo-empty-courses h3{font-size:var(--font-size-xl);font-weight:700;margin-bottom:var(--space-sm)}.duo-empty-courses p{color:var(--text-muted);margin-bottom:var(--space-lg);max-width:300px}.duo-courses-list{display:flex;flex-direction:column;gap:var(--space-sm)}.duo-course-card{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md);background:var(--bg-secondary);border-radius:var(--radius-xl);border:2px solid var(--border-subtle);cursor:pointer;transition:all var(--transition-fast);position:relative}.duo-course-card:hover{transform:translate(4px);border-color:var(--accent-primary);background:var(--bg-tertiary)}.duo-course-icon{width:56px;height:56px;border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;font-size:28px;flex-shrink:0;box-shadow:0 4px 12px #0003}.duo-course-info{flex:1;min-width:0}.duo-course-info h3{font-size:var(--font-size-base);font-weight:700;margin-bottom:4px}.duo-course-meta{display:flex;align-items:center;gap:var(--space-sm);font-size:var(--font-size-xs);color:var(--text-muted);margin-bottom:var(--space-sm)}.duo-dot{opacity:.5}.duo-course-progress{height:8px;background:var(--bg-elevated);border-radius:var(--radius-full);overflow:hidden}.duo-course-progress-fill{height:100%;border-radius:var(--radius-full);transition:width var(--transition-slow)}.duo-course-action{color:var(--text-muted);transition:transform var(--transition-fast)}.duo-course-card:hover .duo-course-action{transform:translate(4px);color:var(--accent-primary)}.duo-course-delete{position:absolute;top:8px;right:8px;width:24px;height:24px;border-radius:var(--radius-sm);border:none;background:transparent;color:var(--text-muted);cursor:pointer;opacity:0;transition:all var(--transition-fast);display:flex;align-items:center;justify-content:center}.duo-course-card:hover .duo-course-delete{opacity:1}.duo-course-delete:hover{background:#ef444433;color:#ef4444}.duo-add-course{display:flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-lg);background:transparent;border:2px dashed var(--border-medium);border-radius:var(--radius-xl);color:var(--text-muted);font-family:var(--font-family);font-size:var(--font-size-sm);font-weight:600;cursor:pointer;transition:all var(--transition-fast)}.duo-add-course:hover{border-color:var(--accent-primary);color:var(--accent-primary);background:color-mix(in srgb,var(--accent-primary) 14%,transparent)}.duo-sidebar{display:flex;flex-direction:column;gap:var(--space-md)}.duo-card{background:var(--bg-secondary);border-radius:var(--radius-xl);border:2px solid var(--border-subtle);padding:var(--space-lg)}.duo-level-card{background:linear-gradient(135deg,#8b15381a,#c41e3a0d);border-color:#8b153833}.duo-level-header{display:flex;align-items:center;gap:var(--space-md);margin-bottom:var(--space-md)}.duo-level-badge{width:48px;height:48px;background:linear-gradient(135deg,var(--accent-primary),#7c3aed);border-radius:var(--radius-lg);display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;box-shadow:0 4px 12px #8b153866}.duo-level-badge span{font-size:var(--font-size-lg);font-weight:800}.duo-level-info{display:flex;flex-direction:column}.duo-level-title{font-size:var(--font-size-base);font-weight:700}.duo-level-xp{font-size:var(--font-size-xs);color:var(--text-muted)}.duo-level-progress{height:12px;background:var(--bg-elevated);border-radius:var(--radius-full);overflow:hidden;margin-bottom:var(--space-sm)}.duo-level-progress-fill{height:100%;background:linear-gradient(90deg,var(--accent-primary),var(--accent-primary));border-radius:var(--radius-full);transition:width var(--transition-slow)}.duo-level-hint{font-size:var(--font-size-xs);color:var(--text-muted);text-align:center}.duo-goal-card{text-align:center}.duo-goal-header{display:flex;align-items:center;justify-content:center;gap:var(--space-sm);font-weight:700;margin-bottom:var(--space-md)}.duo-goal-content{display:flex;flex-direction:column;align-items:center}.duo-goal-progress{position:relative;width:100px;height:100px;margin-bottom:var(--space-sm)}.duo-goal-ring{width:100%;height:100%;transform:rotate(-90deg)}.duo-goal-ring-bg{fill:none;stroke:var(--bg-elevated);stroke-width:8}.duo-goal-ring-fill{fill:none;stroke:var(--accent-secondary);stroke-width:8;stroke-linecap:round;transition:stroke-dasharray var(--transition-slow)}.duo-goal-value{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center}.duo-goal-current{font-size:var(--font-size-2xl);font-weight:800;color:var(--accent-secondary)}.duo-goal-target{font-size:var(--font-size-base);color:var(--text-muted)}.duo-goal-text{font-size:var(--font-size-sm);color:var(--text-muted)}.duo-achievements-header{display:flex;align-items:center;gap:var(--space-sm);font-weight:700;margin-bottom:var(--space-md)}.duo-achievements-count{margin-left:auto;padding:2px 8px;background:var(--bg-tertiary);border-radius:var(--radius-full);font-size:var(--font-size-xs);color:var(--text-muted)}.duo-badges-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:var(--space-sm)}.duo-badge{width:100%;aspect-ratio:1;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border-radius:var(--radius-md);position:relative;transition:transform var(--transition-fast)}.duo-badge:hover{transform:scale(1.1)}.duo-badge-icon{font-size:20px}.duo-badge.locked{opacity:.4;filter:grayscale(1)}.duo-badge.unlocked{background:linear-gradient(135deg,#fbbf2433,#f59e0b1a);box-shadow:0 0 12px #fbbf244d}.duo-badge-lock{position:absolute;bottom:2px;right:2px;color:var(--text-muted)}.duo-leaderboard-header{display:flex;align-items:center;gap:var(--space-sm);font-weight:700;margin-bottom:var(--space-md)}.duo-leaderboard-you{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md);background:linear-gradient(135deg,#fbbf2426,#f59e0b0d);border-radius:var(--radius-lg);border:1px solid rgba(251,191,36,.3)}.duo-leaderboard-rank{font-size:var(--font-size-lg);font-weight:800;color:var(--accent-gold)}.duo-leaderboard-user{flex:1;display:flex;flex-direction:column}.duo-avatar{font-weight:700}.duo-leaderboard-user span{font-size:var(--font-size-xs);color:var(--text-muted)}.duo-crown{color:var(--accent-gold);animation:crownBounce 2s ease-in-out infinite}@keyframes crownBounce{0%,to{transform:translateY(0) rotate(0)}25%{transform:translateY(-2px) rotate(-5deg)}75%{transform:translateY(-2px) rotate(5deg)}}.duo-modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000d9;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);animation:fadeIn .2s ease}.duo-modal{background:var(--bg-secondary);border-radius:var(--radius-xl);padding:var(--space-xl);width:100%;max-width:420px;border:2px solid var(--border-subtle);text-align:center;animation:slideUp .3s ease}.duo-modal-mascot{font-size:56px;margin-bottom:var(--space-md);animation:mascotBounce 2s ease-in-out infinite}.duo-modal h2{font-size:var(--font-size-xl);font-weight:800;margin-bottom:var(--space-xs)}.duo-modal>p{color:var(--text-muted);margin-bottom:var(--space-lg)}.duo-modal-field{margin-bottom:var(--space-lg);text-align:left}.duo-modal-field label{display:block;font-size:var(--font-size-sm);font-weight:600;color:var(--text-secondary);margin-bottom:var(--space-sm)}.duo-modal-field input[type=text]{width:100%;padding:var(--space-md);background:var(--bg-tertiary);border:2px solid var(--border-medium);border-radius:var(--radius-lg);color:var(--text-primary);font-size:var(--font-size-base);font-family:var(--font-family);transition:border-color var(--transition-fast)}.duo-modal-field input[type=text]:focus{outline:none;border-color:var(--accent-primary)}.duo-modal-field input[type=text]::placeholder{color:var(--text-muted)}.duo-icon-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:var(--space-sm)}.duo-icon-btn{aspect-ratio:1;border:2px solid var(--border-subtle);border-radius:var(--radius-md);background:var(--bg-tertiary);font-size:20px;cursor:pointer;transition:all var(--transition-fast)}.duo-icon-btn:hover{border-color:var(--accent-primary);transform:scale(1.05)}.duo-icon-btn.selected{border-color:var(--accent-primary);background:#c41e3a33;transform:scale(1.05)}.duo-color-row{display:flex;gap:var(--space-sm)}.duo-color-btn{width:36px;height:36px;border:3px solid transparent;border-radius:var(--radius-full);cursor:pointer;transition:all var(--transition-fast)}.duo-color-btn:hover{transform:scale(1.1)}.duo-color-btn.selected{border-color:#fff;transform:scale(1.1);box-shadow:0 0 0 2px var(--bg-secondary)}.duo-modal-actions{display:flex;gap:var(--space-sm);justify-content:center;margin-top:var(--space-lg)}.duo-modal-actions .duo-btn{flex:1}.xp-popups-container{position:fixed;top:80px;right:24px;z-index:9999;display:flex;flex-direction:column;gap:8px;pointer-events:none}.task-toast-container{position:fixed;left:50%;bottom:24px;transform:translate(-50%);z-index:4000;pointer-events:none;padding:0 16px}.task-toast{pointer-events:auto;display:flex;align-items:center;gap:12px;max-width:min(560px,calc(100vw - 32px));padding:12px 12px 12px 14px;border-radius:18px;background:linear-gradient(135deg,#d6404533,#ffffff0f);border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(18px) saturate(150%);-webkit-backdrop-filter:blur(18px) saturate(150%);box-shadow:0 16px 48px #00000061,0 0 0 1px #d6404514;animation:taskToastIn .22s ease-out}@keyframes taskToastIn{0%{transform:translateY(10px);opacity:0}to{transform:translateY(0);opacity:1}}.task-toast-main{display:flex;flex-direction:column;gap:2px;min-width:0;flex:1}.task-toast-title{font-size:13px;font-weight:900;letter-spacing:-.3px;color:#ffffffeb}.task-toast-message{font-size:12px;color:#ffffffb8;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.task-toast-btn{display:inline-flex;align-items:center;gap:8px;padding:10px 12px;border-radius:14px;border:1px solid rgba(255,255,255,.16);background:#ffffff14;color:#ffffffeb;font-weight:900;font-size:12px;cursor:pointer;transition:background .15s ease,transform .15s ease,border-color .15s ease}.task-toast-btn:hover{background:#ffffff1f;border-color:#ffffff38;transform:translateY(-1px)}.task-toast-btn:active{transform:translateY(0)}.task-toast-close{width:32px;height:32px;border-radius:12px;border:1px solid rgba(255,255,255,.12);background:transparent;color:#ffffffbf;cursor:pointer;transition:background .15s ease,border-color .15s ease,color .15s ease}.task-toast-close:hover{background:#ffffff14;border-color:#ffffff2e;color:#ffffffeb}.xp-gain-toast{display:flex;align-items:center;gap:12px;padding:12px 16px;background:linear-gradient(135deg,#22c55ef2,#16a34af2);border-radius:12px;box-shadow:0 8px 32px #22c55e66,0 0 0 1px #ffffff1a;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);pointer-events:auto}.xp-gain-icon{width:32px;height:32px;background:#fff3;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff}.xp-gain-content{display:flex;flex-direction:column}.xp-gain-amount{font-size:16px;font-weight:800;color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.2)}.xp-gain-reason{font-size:12px;color:#fffc}.xp-gain-coins{display:flex;align-items:center;gap:4px;padding:4px 10px;background:#fbbf244d;border-radius:12px;font-size:13px;font-weight:700;color:#fcd34d}.pdf-drag-handle{display:flex;align-items:center;justify-content:center;padding:4px;color:var(--text-muted);cursor:grab;opacity:.4;transition:opacity var(--transition-fast);flex-shrink:0}.pdf-item:hover .pdf-drag-handle{opacity:1}.pdf-drag-handle:active{cursor:grabbing}.pdf-item.dragging{opacity:.5;transform:scale(.98);background:var(--bg-elevated)}.pdf-item.drag-over{border-top:2px solid var(--accent-primary)}.pdf-item.drag-over:before{content:"";position:absolute;top:-2px;left:0;right:0;height:2px;background:var(--accent-primary);border-radius:1px}.duo-course-card.dragging{opacity:.5;transform:scale(.98)}.duo-course-card.drag-over{border-color:var(--accent-primary);background:#c41e3a1a}.duo-course-drag{display:flex;align-items:center;justify-content:center;padding:4px;color:var(--text-muted);cursor:grab;opacity:.3;transition:opacity var(--transition-fast)}.duo-course-card:hover .duo-course-drag{opacity:1}.duo-course-drag:active{cursor:grabbing}.duo-analytics-card{background:var(--bg-secondary);border-radius:var(--radius-xl);border:2px solid var(--border-subtle);padding:var(--space-lg)}.duo-analytics-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-lg)}.duo-analytics-header h3{font-size:var(--font-size-base);font-weight:700;display:flex;align-items:center;gap:var(--space-sm)}.duo-analytics-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:4px;margin-bottom:var(--space-md)}.duo-analytics-day{aspect-ratio:1;border-radius:4px;background:var(--bg-tertiary);transition:all var(--transition-fast)}.duo-analytics-day.active{background:var(--accent-secondary)}.duo-analytics-day.today{border:2px solid var(--accent-primary)}.duo-analytics-day:hover{transform:scale(1.1)}.duo-analytics-summary{display:flex;gap:var(--space-lg);padding-top:var(--space-md);border-top:1px solid var(--border-subtle)}.duo-analytics-stat{display:flex;flex-direction:column}.duo-analytics-stat-value{font-size:var(--font-size-lg);font-weight:700;color:var(--accent-secondary)}.duo-analytics-stat-label{font-size:var(--font-size-xs);color:var(--text-muted)}.duo-activity-feed{max-height:200px;overflow-y:auto}.duo-activity-item{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm) 0;border-bottom:1px solid var(--border-subtle)}.duo-activity-item:last-child{border-bottom:none}.duo-activity-icon{font-size:16px}.duo-activity-info{flex:1}.duo-activity-label{font-size:var(--font-size-sm);font-weight:500}.duo-activity-time{font-size:var(--font-size-xs);color:var(--text-muted)}.duo-activity-xp{font-size:var(--font-size-xs);font-weight:700;color:var(--accent-secondary)}.premium-dashboard{flex:1;overflow-y:auto;background:#050506;position:relative;-ms-overflow-style:none;scrollbar-width:none}.premium-dashboard::-webkit-scrollbar{width:0;height:0;display:none}.compact-hero{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:22px 32px 20px;background:transparent;border-bottom:1px solid rgba(255,255,255,.03);border-image:none;position:relative;z-index:1;overflow:hidden}.compact-hero:before{display:none}.compact-hero-content{display:flex;flex-direction:column;gap:6px;min-width:0}.compact-hero-title-row{display:inline-flex;align-items:center;gap:12px}.hero-subtitle{margin:0;font-size:13px;line-height:1.35;color:#fff3;font-weight:400;letter-spacing:.1px}.compact-hero h1{margin:0;font-size:clamp(24px,2.2vw,30px);line-height:1.08;font-weight:800;color:#ffffffeb;letter-spacing:-.6px}.compact-hero-count{font-size:13px;color:var(--text-muted)}.courses-progress-circle{position:relative;width:46px;height:46px;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;border-radius:50%;border:1px solid rgba(255,255,255,.08);background:#ffffff05}.courses-progress-circle svg{width:100%;height:100%;transform:rotate(-90deg)}.courses-progress-circle-track{fill:none;stroke:#ffffff24;stroke-width:4}.courses-progress-circle-fill{fill:none;stroke:var(--accent-primary);stroke-width:4;stroke-linecap:round;transition:stroke-dashoffset .3s ease}.courses-progress-circle span{position:absolute;font-size:10px;font-weight:700;color:#ffffffdb}.compact-hero-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}.glass-add-btn{display:flex;align-items:center;gap:8px;padding:10px 20px;background:linear-gradient(145deg,color-mix(in srgb,var(--accent-primary) 10%,transparent),#ffffff05);border:1px solid color-mix(in srgb,var(--accent-primary) 24%,rgba(255,255,255,.08));border-radius:14px;color:color-mix(in srgb,var(--accent-primary) 72%,white 28%);font-size:13px;font-weight:600;cursor:pointer;transition:all .35s cubic-bezier(.16,1,.3,1);position:relative;overflow:hidden;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);letter-spacing:-.1px;box-shadow:inset 0 1px #ffffff29,0 12px 22px color-mix(in srgb,var(--accent-primary) 18%,transparent)}.glass-add-btn:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.04),transparent);background-size:200% 100%;opacity:0;transition:opacity .3s}.glass-add-btn:hover{background:linear-gradient(145deg,color-mix(in srgb,var(--accent-primary) 22%,transparent),#ffffff0d);border-color:color-mix(in srgb,var(--accent-primary) 50%,rgba(255,255,255,.2));color:var(--text-primary);transform:translateY(-1px);box-shadow:inset 0 1px #ffffff38,0 16px 28px color-mix(in srgb,var(--accent-primary) 24%,transparent)}.glass-add-btn:hover:after{opacity:0}.glass-add-btn.course-creator-trigger{background:#ffffff0a;border-color:#ffffff14;color:var(--text-primary);box-shadow:none}.glass-add-btn.course-creator-trigger:after{display:none}.glass-add-btn.course-creator-trigger:hover{background:#ffffff14;border-color:#ffffff24;color:var(--text-primary);box-shadow:none}.compact-toggle-btn{display:flex;align-items:center;justify-content:center;width:40px;height:40px;background:#ffffff05;border:1px solid rgba(255,255,255,.04);border-radius:12px;color:#ffffff40;cursor:pointer;transition:all .25s ease;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.compact-toggle-btn:hover{background:#ffffff0d;color:#fff9;border-color:#ffffff14}.compact-content{display:grid;grid-template-columns:minmax(0,1fr);gap:24px;padding:20px 36px 36px;transition:grid-template-columns .3s;position:relative;z-index:1}.compact-content.with-planner-column{grid-template-columns:minmax(0,1fr) 340px;align-items:start}.compact-planner-column{min-width:0;position:sticky;top:88px;max-height:calc(100vh - 110px)}.compact-main{display:flex;flex-direction:column;gap:16px;--course-widget-surface: linear-gradient(180deg, rgba(255, 255, 255, .04), rgba(255, 255, 255, .015));--course-widget-border: rgba(255, 255, 255, .1);--course-widget-shadow: 0 8px 28px rgba(0, 0, 0, .35);--course-widget-hover-shadow: 0 16px 42px rgba(0, 0, 0, .5);--course-widget-gloss: rgba(255, 255, 255, .09);--course-widget-blur: 20px;--course-widget-saturation: 115%;--course-widget-add-bg: rgba(255, 255, 255, .02);--course-widget-add-border: rgba(255, 255, 255, .2);--course-widget-texture-opacity: .08;--course-widget-tint-opacity: .02}.demo-hero{display:grid;grid-template-columns:1.15fr .85fr;gap:12px;padding:16px;border-radius:22px;border:1px solid rgba(255,255,255,.04);background:#ffffff04;backdrop-filter:blur(40px);-webkit-backdrop-filter:blur(40px);box-shadow:0 24px 64px #0006,0 0 0 .5px #ffffff08 inset;overflow:hidden}.demo-level{border-radius:16px;border:1px solid rgba(255,255,255,.12);background:#ffffff0f;padding:14px}.demo-level-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 10px;border-radius:999px;font-size:12px;font-weight:900;letter-spacing:.2px;color:#ffffffeb;background:#c41e3a38;border:1px solid rgba(196,30,58,.35)}.demo-level-number{font-size:52px;font-weight:950;letter-spacing:-1.2px;line-height:1;margin-top:10px;color:#fffffff5}.demo-xp-row{margin-top:12px;display:flex;align-items:center;gap:10px}.demo-xp-bar{flex:1;height:10px;border-radius:999px;background:#ffffff12;overflow:hidden}.demo-xp-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,#c41e3af2,#ffffff8c)}.demo-xp-label{font-size:12px;font-weight:800;color:#ffffffb3;white-space:nowrap}.demo-kpis{margin-top:12px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.demo-kpi{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:14px;border:1px solid rgba(255,255,255,.1);background:#0000001f}.demo-kpi-icon{width:32px;height:32px;border-radius:12px;display:flex;align-items:center;justify-content:center;color:#ffffffeb;background:#ffffff0f;border:1px solid rgba(255,255,255,.1)}.demo-kpi-value{font-size:16px;font-weight:900;color:#fffffff2;line-height:1.1}.demo-kpi-label{font-size:11px;color:#fff9;margin-top:2px}.demo-hero-card{height:100%;border-radius:16px;border:1px solid rgba(255,255,255,.12);background:#ffffff0d;padding:14px;display:flex;flex-direction:column;gap:8px}.demo-hero-card-title{font-size:13px;font-weight:900;color:#ffffffeb;letter-spacing:.2px}.demo-hero-card-subtitle{font-size:12px;color:#ffffff9e}.demo-sparkline{margin-top:8px;width:100%;height:26px;opacity:.9}.demo-hero-card-foot{margin-top:auto;font-size:12px;color:#ffffffb3}@media (max-width: 1280px){.compact-content.with-planner-column{grid-template-columns:minmax(0,1fr)}.compact-planner-column{position:static;max-height:none}}@media (max-width: 1000px){.demo-hero{grid-template-columns:1fr}}.schedule-panel{display:grid;grid-template-columns:1.2fr 1fr;grid-template-rows:auto 1fr;gap:16px;padding:18px;border-radius:22px;background:#ffffff04;border:1px solid rgba(255,255,255,.04);backdrop-filter:blur(40px);-webkit-backdrop-filter:blur(40px);box-shadow:0 20px 60px #00000059;container-type:inline-size;height:clamp(360px,44vh,500px);min-width:0;overflow:hidden;isolation:isolate}.schedule-panel.compact{grid-template-columns:1fr;grid-template-rows:auto auto minmax(0,1fr);gap:10px;padding:10px;border-radius:16px;width:100%;height:min(78vh,760px)}.schedule-panel.compact .schedule-header{grid-column:1;grid-row:1;margin-bottom:0;flex-wrap:wrap;gap:8px;align-items:center}.schedule-panel.compact .schedule-title{font-size:13px}.schedule-panel.compact .schedule-month{width:100%;justify-content:space-between;gap:6px}.schedule-panel.compact .schedule-month-label{min-width:0;max-width:120px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:12px}.schedule-panel.compact .schedule-calendar{grid-column:1;grid-row:2;gap:5px}.schedule-panel.compact .schedule-day-label{font-size:10px}.schedule-panel.compact .schedule-day{height:28px;border-radius:8px;font-size:11px}.schedule-panel.compact .schedule-day-dots{bottom:2px}.schedule-panel.compact .schedule-tasks{grid-column:1;grid-row:3;gap:8px;min-height:0;overflow:hidden}.schedule-panel.compact .schedule-tasks-header{gap:6px;align-items:flex-start;flex-direction:column}.schedule-panel.compact .schedule-tasks-tools{width:100%;gap:6px;justify-content:flex-start}.schedule-panel.compact .schedule-search{flex:1 1 120px}.schedule-panel.compact .schedule-search input{width:100%}.schedule-panel.compact .schedule-course-filter,.schedule-panel.compact .schedule-toggle-btn{flex:0 0 auto}.schedule-panel.compact .schedule-new-task{grid-template-columns:minmax(0,1fr) 62px 32px;grid-template-rows:auto auto;grid-template-areas:"title duration add" "course file file";gap:6px}.schedule-panel.compact .schedule-new-task input,.schedule-panel.compact .schedule-new-task select{padding:6px 8px;border-radius:8px;font-size:11px}.schedule-panel.compact .schedule-task{padding:7px 8px;border-radius:10px}.schedule-panel.compact .schedule-task-title{font-size:11px}.schedule-panel.compact .schedule-task-meta{font-size:10px}.schedule-panel.compact .schedule-task-list{padding-right:2px}.schedule-header{grid-column:1 / -1;grid-row:1;display:flex;align-items:center;justify-content:space-between;color:var(--text-primary);margin-bottom:4px}.schedule-calendar{grid-row:2;min-width:0}.schedule-tasks{grid-row:2;min-height:0;min-width:0;overflow:hidden}.schedule-task-list{min-height:0;overflow:auto;padding-right:4px}.schedule-title{display:flex;align-items:center;gap:8px;font-weight:600;font-size:14px}.schedule-month{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-muted);min-width:0;flex-wrap:wrap;justify-content:flex-end}.schedule-month-label{min-width:140px;text-align:center;color:var(--text-secondary);font-weight:600}.schedule-today-btn{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:10px;background:#ffffff0f;border:1px solid var(--border-subtle);color:var(--text-secondary);cursor:pointer;transition:all .15s ease}.schedule-today-btn:hover{background:#ffffff1a;color:var(--text-primary);border-color:var(--border-medium)}.schedule-month-btn{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:8px;background:var(--bg-tertiary);border:1px solid var(--border-subtle);color:var(--text-secondary);cursor:pointer;transition:all .15s ease}.schedule-month-btn:hover{background:var(--bg-elevated);color:var(--text-primary)}.schedule-calendar{display:grid;grid-template-columns:repeat(7,1fr);gap:clamp(4px,.55vw,6px);-webkit-user-select:none;user-select:none}.schedule-day-label{font-size:11px;text-align:center;color:var(--text-muted)}.schedule-day{height:clamp(32px,3vw,36px);border-radius:10px;border:1px solid rgba(255,255,255,.06);background:var(--bg-tertiary);color:var(--text-primary);font-size:12px;cursor:pointer;transition:all .15s ease;position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden}.schedule-day:hover{background:#ffffff14;border-color:#ffffff1f}.schedule-day.drop-target{background:#c41e3a2e;border-color:#c41e3a73}.schedule-day.selected{background:var(--bg-tertiary);border-color:#ffffffa6}.schedule-day.today{box-shadow:inset 0 0 0 2px #c41e3ae6,0 0 12px #c41e3a40;background:#c41e3a14}.schedule-day.today.selected{box-shadow:inset 0 0 0 2px #c41e3ae6,0 0 0 1px #ffffffa6}.schedule-day.outside{opacity:.45}.schedule-day-number{position:relative;z-index:1}.schedule-day-dots{position:absolute;left:50%;bottom:4px;transform:translate(-50%);display:flex;align-items:center;gap:3px}.schedule-day-dot{width:4px;height:4px;border-radius:999px;background:#ffffff59}.schedule-day.has-items .schedule-day-dot{background:#c41e3abf}.schedule-day-overflow{font-size:10px;color:#ffffff8c}.schedule-tasks{display:flex;flex-direction:column;gap:10px}.schedule-task.dragging{opacity:.6}.schedule-task-meta{display:inline-flex;align-items:center;margin-top:2px;font-size:11px;color:var(--text-muted)}.schedule-tasks-header{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--text-muted)}.schedule-selected-date{font-weight:600;color:var(--text-secondary)}.schedule-selected-date-wrap{display:flex;flex-direction:column;gap:2px;min-width:0}.schedule-selected-meta{font-size:11px;color:var(--text-muted)}.schedule-tasks-tools{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}.schedule-search{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:10px;border:1px solid var(--border-subtle);background:var(--bg-tertiary);color:var(--text-muted)}.schedule-search input{width:130px;border:none;outline:none;background:transparent;color:var(--text-primary);font-size:12px}.schedule-toggle-btn{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:10px;border:1px solid var(--border-subtle);background:var(--bg-tertiary);color:var(--text-secondary);cursor:pointer;transition:all .15s ease}.schedule-toggle-btn:hover{background:var(--bg-elevated);color:var(--text-primary)}.schedule-toggle-btn.active{border-color:#ffffff2e}.schedule-course-filter{padding:6px 10px;border-radius:10px;border:1px solid var(--border-subtle);background:var(--bg-tertiary);color:var(--text-primary);font-size:12px}.schedule-new-task{display:grid;grid-template-columns:minmax(0,1fr) 88px 150px minmax(0,1fr) 36px;grid-template-areas:"title duration course file add";gap:8px;align-items:center}.schedule-new-task .schedule-new-title{grid-area:title}.schedule-new-task .schedule-new-duration{grid-area:duration}.schedule-new-task .schedule-new-course{grid-area:course}.schedule-new-task .schedule-new-file{grid-area:file}.schedule-new-task .schedule-add-btn{grid-area:add}.schedule-add-btn{width:36px;height:36px}.schedule-panel.compact .schedule-add-btn{width:32px;height:32px}@container (max-width: 520px){.schedule-new-task{grid-template-columns:minmax(0,1fr) 88px 36px;grid-template-rows:auto auto;grid-template-areas:"title duration add" "course file file"}.schedule-panel.compact .schedule-new-task{grid-template-columns:minmax(0,1fr) 62px 32px;grid-template-areas:"title duration add" "course file file"}}.schedule-new-task input,.schedule-new-task select{min-width:0;padding:8px 10px;border-radius:10px;border:1px solid var(--border-subtle);background:var(--bg-tertiary);color:var(--text-primary);font-size:12px}.schedule-new-task input:focus,.schedule-new-task select:focus{outline:none;border-color:#c41e3a73;box-shadow:0 0 0 3px #c41e3a29}.schedule-add-btn{display:inline-flex;align-items:center;justify-content:center;border-radius:10px;border:1px solid rgba(255,255,255,.12);background:#ffffff14;color:var(--text-primary);cursor:pointer}.schedule-add-btn:focus{outline:none}.schedule-add-btn:focus-visible{border-color:#c41e3a73;box-shadow:0 0 0 3px #c41e3a29}.schedule-undo{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 10px;border-radius:12px;border:1px solid rgba(196,30,58,.22);background:#c41e3a14;color:var(--text-secondary);font-size:12px}.schedule-undo-btn{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:10px;border:1px solid rgba(196,30,58,.28);background:#c41e3a2e;color:var(--text-primary);cursor:pointer}.schedule-task-list{display:flex;flex-direction:column;gap:6px;flex:1;min-height:0;max-height:100%;overflow:auto;overscroll-behavior:contain;scrollbar-gutter:stable}.schedule-task{display:grid;grid-template-columns:26px 1fr 28px 28px 28px;align-items:center;gap:8px;padding:8px 10px;border-radius:12px;background:var(--bg-tertiary);border:1px solid var(--border-subtle);cursor:grab;transition:opacity .15s ease,background .15s ease,border-color .15s ease}.schedule-task.done{opacity:.86;border-color:#94a3b83d;background:#94a3b81a}.schedule-task.done .schedule-task-title{color:var(--text-muted);text-decoration:line-through;text-decoration-thickness:2px;text-decoration-color:#94a3b88f}.schedule-check,.schedule-delete,.schedule-task-action{background:transparent;border:none;color:var(--text-muted);cursor:pointer}.schedule-task-action:hover,.schedule-delete:hover{color:var(--text-primary)}.schedule-task-info{display:flex;flex-direction:column;gap:2px;font-size:12px;min-width:0}.schedule-task-title{color:var(--text-primary);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.schedule-task-links{display:flex;align-items:center;gap:8px;min-width:0}.schedule-link-chip{display:inline-flex;align-items:center;gap:6px;padding:4px 8px;border-radius:999px;border:1px solid rgba(255,255,255,.12);background:#ffffff0f;color:var(--text-secondary);font-size:11px;cursor:pointer;min-width:0}.schedule-link-chip span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:240px}.schedule-link-chip:hover:not(:disabled){background:#ffffff1a;color:var(--text-primary)}.schedule-link-chip:disabled{opacity:.6;cursor:not-allowed}.schedule-link-chip.missing{border-color:#ef444459;background:#ef44441f;color:#fffc}.schedule-relink-btn{background:transparent;border:none;color:#ef4444e6;font-size:11px;font-weight:700;cursor:pointer}.schedule-relink-btn:hover{text-decoration:underline}.schedule-task.editing{cursor:default;background:#ffffff0a;border-color:#ffffff24}.schedule-task-edit{display:flex;flex-direction:column;gap:6px;min-width:0}.schedule-edit-title{width:100%;padding:6px 8px;border-radius:10px;border:1px solid var(--border-subtle);background:var(--bg-elevated);color:var(--text-primary);font-size:12px}.schedule-edit-row{display:grid;grid-template-columns:130px 1fr 1fr;gap:8px}.schedule-edit-row.schedule-edit-row-pages{grid-template-columns:1fr 1fr}.schedule-edit-row input,.schedule-edit-row select{padding:6px 8px;border-radius:10px;border:1px solid var(--border-subtle);background:var(--bg-elevated);color:var(--text-primary);font-size:12px}.schedule-edit-row input:focus,.schedule-edit-row select:focus{outline:none;border-color:#c41e3a73;box-shadow:0 0 0 3px #c41e3a29}.schedule-empty{font-size:12px;color:var(--text-muted);padding:10px 6px}.compact-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;padding:80px 20px;text-align:center;color:var(--text-muted)}.compact-empty svg{opacity:.5;color:var(--accent-primary);animation:subtleFloat 3s ease-in-out infinite}.compact-empty h2{font-size:20px;font-weight:700;color:var(--text-primary);margin:0}.compact-empty p{font-size:14px;margin:0 0 16px;max-width:420px;line-height:1.5}.compact-empty .glass-add-btn{background:linear-gradient(135deg,#d640454d,#a3343840);padding:12px 28px;font-size:15px;border-radius:14px;box-shadow:0 4px 20px #d6404526}.first-folder-form{display:flex;gap:10px;width:100%;max-width:420px;margin-top:4px}.first-folder-input{flex:1;min-width:0;padding:12px 16px;font-size:15px;color:var(--text-primary);background:#ffffff0a;border:1px solid rgba(255,255,255,.08);border-radius:12px;outline:none;transition:border-color .15s ease,background .15s ease}.first-folder-input:focus{border-color:#d6404580;background:#ffffff0f}.first-folder-submit{padding:12px 20px;font-size:14px;font-weight:600;color:#fff;background:linear-gradient(135deg,#d64045e6,#a33438e6);border:none;border-radius:12px;cursor:pointer;box-shadow:0 4px 20px #d6404526;transition:transform .1s ease,box-shadow .15s ease,opacity .15s ease;white-space:nowrap}.first-folder-submit:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 24px #d6404540}.first-folder-submit:disabled{opacity:.4;cursor:not-allowed}.compact-courses-list{display:grid;gap:16px}.compact-courses-list.grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}.compact-courses-list.list{grid-template-columns:1fr}.compact-course-card{padding:0;background:transparent;border-radius:18px;cursor:pointer;position:relative;overflow:hidden;transition:transform .28s cubic-bezier(.22,1,.36,1),box-shadow .28s cubic-bezier(.22,1,.36,1),border-color .28s ease;will-change:transform;box-shadow:0 2px 8px #0000001f,0 8px 24px #00000014,inset 0 0 0 1px #ffffff0a}.compact-course-card:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:var(--course-color, rgba(255,255,255,.1));opacity:var(--course-widget-tint-opacity);transition:opacity .3s ease;z-index:0}.compact-course-card:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background-image:radial-gradient(rgba(255,255,255,.28) .55px,transparent .55px);background-size:3px 3px;opacity:var(--course-widget-texture-opacity);pointer-events:none;z-index:0;mix-blend-mode:soft-light}.compact-card-glass{display:flex;flex-direction:column;align-items:flex-start;gap:12px;padding:20px;width:100%;position:relative;z-index:1;background:var(--course-widget-surface);backdrop-filter:blur(var(--course-widget-blur)) saturate(var(--course-widget-saturation));-webkit-backdrop-filter:blur(var(--course-widget-blur)) saturate(var(--course-widget-saturation));box-shadow:inset 0 1px 0 var(--course-widget-gloss),inset 0 -1px #0003;border:1px solid var(--course-widget-border)}.compact-courses-list.list .compact-card-glass{flex-direction:row;align-items:center;gap:20px}.compact-course-card:hover{transform:translateY(-3px);box-shadow:0 4px 12px #00000026,0 16px 40px #0000001f,0 0 0 1px #ffffff14,0 0 20px color-mix(in srgb,var(--course-color, transparent) 12%,transparent)}.compact-course-card:hover:before{opacity:calc(var(--course-widget-tint-opacity) + .06)}.compact-course-card.dragging{opacity:.62;transform:scale(.985)}.compact-drop-indicator{position:absolute;left:12px;right:12px;height:2px;border-radius:999px;background:var(--accent-primary);box-shadow:0 0 12px color-mix(in srgb,var(--accent-primary) 60%,transparent);opacity:0;transform:scaleX(.4);transform-origin:center;transition:opacity .14s ease,transform .14s ease;z-index:3;pointer-events:none}.compact-course-card.drag-over-before .compact-drop-indicator{top:0;opacity:1;transform:scaleX(1)}.compact-course-card.drag-over-after .compact-drop-indicator{bottom:0;opacity:1;transform:scaleX(1)}@keyframes dropLineGlow{0%{opacity:0;transform:scaleX(.5)}to{opacity:1;transform:scaleX(1)}}.compact-course-card:active{transform:scale(.995)}.compact-card-info{flex:1;width:100%;min-width:0}.compact-card-info h3{font-size:16px;font-weight:700;color:var(--text-primary);margin:0 0 10px;line-height:1.3;letter-spacing:-.02em}.compact-card-meta{display:flex;flex-direction:column;align-items:flex-start;gap:12px;font-size:13px;color:var(--text-secondary)}.compact-courses-list.list .compact-card-meta{flex-direction:row;align-items:center;gap:24px}.compact-progress{display:flex;align-items:center;gap:10px;flex:1;width:100%}.compact-progress-bar{height:5px;background:#ffffff0f;border-radius:999px;overflow:hidden;flex:1;box-shadow:inset 0 1px 2px #0003}.compact-progress-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--course-color, var(--accent-primary)),color-mix(in srgb,var(--course-color, var(--accent-primary)) 80%,white));transition:width .6s cubic-bezier(.16,1,.3,1);box-shadow:0 0 6px color-mix(in srgb,var(--course-color, var(--accent-primary)) 40%,transparent)}.compact-card-actions{display:flex;align-items:center;gap:6px;margin-top:auto;opacity:.4;transition:opacity .2s ease}.compact-courses-list.list .compact-card-actions{margin-top:0;margin-left:auto}.compact-course-card:hover .compact-card-actions{opacity:1}.compact-action-btn{width:28px;height:28px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;border-radius:6px;color:var(--text-muted);cursor:pointer;transition:all .15s}.compact-action-btn:hover{background:var(--bg-elevated);color:var(--text-primary)}.compact-action-btn.delete:hover{color:#ef4444}.compact-drag-handle{cursor:grab;color:var(--text-secondary)}.compact-drag-handle:hover{color:var(--text-primary)}.compact-drag-handle:active{cursor:grabbing}body.course-reorder-active,body.course-reorder-active *{cursor:grabbing!important}.compact-card-arrow{display:none}.compact-hero-actions{display:flex;align-items:center;gap:12px}.dashboard-sort-select{height:40px;padding:0 12px;border-radius:12px;border:1px solid rgba(255,255,255,.08);background:#ffffff08;color:#ffffffc7;font-size:12px;font-weight:600;outline:none;cursor:pointer}.dashboard-sort-select:focus{border-color:#ff525261}.reorder-hint{font-size:11px;color:#ffffff6b;padding:0 2px;margin-top:-4px}.view-mode-toggle{display:flex;background:#ffffff0a;border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:4px;gap:2px}.view-mode-toggle button{background:transparent;border:none;color:var(--text-muted);padding:8px;border-radius:8px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease}.view-mode-toggle button:hover{color:var(--text-primary);background:#ffffff0f}.view-mode-toggle button.active{background:#ffffff1f;color:var(--text-primary);box-shadow:0 2px 8px #0003}@media (max-width: 980px){.compact-hero{flex-wrap:wrap;align-items:flex-start;padding:18px 20px 16px}.compact-hero-actions{flex-wrap:wrap;justify-content:flex-end;width:100%}.dashboard-sort-select{min-width:118px}}.mastery-badge{position:relative;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-right:4px}.mastery-badge svg{display:block}.mastery-value{position:absolute;font-size:9px;font-weight:800;letter-spacing:-.3px;line-height:1}.compact-add-card{display:flex;align-items:center;justify-content:center;gap:8px;padding:16px;background:var(--course-widget-add-bg);border:1px dashed var(--course-widget-add-border);border-radius:12px;color:var(--text-muted);font-size:13px;font-weight:500;cursor:pointer;transition:all .25s ease}.compact-add-card:hover{background:linear-gradient(135deg,color-mix(in srgb,var(--accent-primary) 20%,transparent),color-mix(in srgb,var(--accent-secondary) 14%,transparent));border-color:color-mix(in srgb,var(--accent-primary) 54%,rgba(255,255,255,.15));border-style:solid;color:var(--text-accent);transform:translateY(-1px);box-shadow:0 4px 16px color-mix(in srgb,var(--accent-primary) 26%,transparent)}.archive-drop-zone{display:flex;align-items:center;justify-content:center;gap:10px;padding:20px;margin-top:16px;background:#c41e3a1a;border:2px dashed var(--accent-primary);border-radius:12px;color:var(--accent-primary);font-size:14px;font-weight:500;transition:all .2s}.archive-drop-zone.drag-over{background:#c41e3a33;border-color:var(--accent-secondary);transform:scale(1.02)}.archive-section{margin-top:16px}.archive-toggle{display:flex;align-items:center;gap:8px;width:100%;padding:10px 14px;background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:10px;color:var(--text-secondary);font-size:13px;font-weight:500;cursor:pointer;transition:all .15s}.archive-toggle:hover{background:var(--bg-tertiary)}.archive-toggle svg:last-child{margin-left:auto;transition:transform .2s}.archive-toggle svg:last-child.rotate{transform:rotate(180deg)}.archived-courses-list{display:flex;flex-direction:column;gap:6px;margin-top:8px;padding-left:8px;border-left:2px solid var(--border-subtle)}.archived-courses-list .compact-course-card{opacity:.7}.archived-courses-list .compact-course-card:hover{opacity:1}.compact-sidebar{display:flex;flex-direction:column;gap:14px;padding-left:16px;border-left:1px solid rgba(255,255,255,.03)}.compact-level-card{display:flex;align-items:center;gap:16px;padding:16px;background:#ffffff04;border-radius:18px;border:1px solid rgba(255,255,255,.04);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}.compact-level-ring{position:relative;width:56px;height:56px;flex-shrink:0}.compact-level-ring svg{width:100%;height:100%;transform:rotate(-90deg)}.compact-ring-bg{fill:none;stroke:var(--bg-elevated);stroke-width:6}.compact-ring-fill{fill:none;stroke:var(--accent-primary);stroke-width:6;stroke-linecap:round;transition:stroke-dasharray .5s}.compact-level-inner{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center}.compact-level-num{font-size:18px;font-weight:700;color:var(--text-primary)}.compact-level-info{display:flex;flex-direction:column;gap:2px}.compact-xp{font-size:15px;font-weight:600;color:var(--text-primary)}.compact-xp-next{font-size:11px;color:var(--text-muted)}.compact-stats-row{display:flex;gap:12px}.compact-stat{flex:1;display:flex;align-items:center;justify-content:center;gap:8px;padding:12px;background:#ffffff04;border-radius:14px;border:1px solid rgba(255,255,255,.03);font-size:14px;font-weight:600;color:#ffffffb3}.compact-stat svg:first-child{color:#f97316}.compact-stat:last-child svg:first-child{color:#fbbf24}.overall-progress-card{padding:16px;background:#ffffff04;border-radius:18px;border:1px solid rgba(255,255,255,.04);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}.overall-progress-header{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--text-primary);margin-bottom:12px}.overall-progress-header svg{color:var(--accent-primary)}.overall-progress-bar{height:8px;background:var(--bg-elevated);border-radius:4px;overflow:hidden;margin-bottom:8px}.overall-progress-fill{height:100%;background:linear-gradient(90deg,var(--accent-primary),var(--accent-secondary));border-radius:4px;transition:width .4s ease}.overall-progress-stats{display:flex;justify-content:space-between;font-size:11px;color:var(--text-muted)}.courses-progress-card{padding:16px;background:#ffffff04;border-radius:18px;border:1px solid rgba(255,255,255,.04);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}.courses-progress-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.courses-progress-title{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--text-primary)}.courses-progress-title svg{color:var(--accent-primary)}.courses-progress-count{font-size:12px;font-weight:600;color:var(--text-muted)}.courses-progress-row{display:flex;align-items:center;gap:10px}.courses-progress-track{flex:1;height:10px;border-radius:999px;overflow:hidden;background:var(--bg-elevated);border:1px solid rgba(255,255,255,.08)}.courses-progress-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--accent-primary),var(--accent-secondary));transition:width .4s ease}.courses-progress-percent{min-width:38px;text-align:right;font-size:11px;font-weight:700;color:var(--accent-primary)}.compact-badges{padding:14px;background:var(--bg-secondary);border-radius:14px;border:1px solid var(--border-subtle)}.compact-badges-header{display:flex;align-items:center;gap:8px;margin-bottom:12px;font-size:13px;font-weight:600;color:var(--text-secondary)}.compact-badge-count{margin-left:auto;font-size:11px;color:var(--text-muted)}.compact-badges-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}.compact-badge{position:relative;aspect-ratio:1;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border-radius:8px;font-size:16px}.compact-badge.locked{opacity:.4;filter:grayscale(100%)}.compact-badge-lock{position:absolute;bottom:2px;right:2px;color:var(--text-muted)}.daily-challenges{background:var(--bg-tertiary);border-radius:16px;padding:16px;margin-bottom:16px;border:1px solid var(--border-subtle)}.daily-challenges-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.daily-challenges-title{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--text-primary)}.challenge-sparkle{color:var(--accent-secondary);animation:sparkle-pulse 2s ease-in-out infinite}@keyframes sparkle-pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.7;transform:scale(1.1)}}.daily-challenges-timer{display:flex;align-items:center;gap:4px;font-size:11px;color:var(--text-muted);background:var(--bg-secondary);padding:4px 8px;border-radius:6px}.challenge-cards{display:flex;flex-direction:column;gap:8px}.challenge-card{display:flex;align-items:center;gap:12px;padding:12px;background:var(--bg-secondary);border-radius:12px;border:1px solid var(--border-subtle);transition:all .2s}.challenge-card:hover{border-color:var(--border-medium);transform:translate(2px)}.challenge-card.completed{border-color:var(--accent-secondary);background:#10b9810d}.challenge-card.claimed{opacity:.6}.challenge-card.claiming{animation:claim-pulse .5s ease-out}@keyframes claim-pulse{0%{transform:scale(1)}50%{transform:scale(1.02)}to{transform:scale(1)}}.challenge-icon{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:var(--challenge-color);border-radius:10px;font-size:20px;flex-shrink:0}.challenge-content{flex:1;min-width:0}.challenge-name{font-size:13px;font-weight:600;color:var(--text-primary);margin-bottom:2px}.challenge-desc{font-size:11px;color:var(--text-muted);margin-bottom:6px}.challenge-progress{display:flex;align-items:center;gap:8px}.challenge-progress-bar{flex:1;height:4px;background:var(--bg-tertiary);border-radius:2px;overflow:hidden}.challenge-progress-fill{height:100%;background:var(--challenge-color);border-radius:2px;transition:width .3s ease-out}.challenge-progress-text{font-size:10px;font-weight:600;color:var(--text-muted);min-width:32px;text-align:right}.challenge-reward{flex-shrink:0}.challenge-rewards-preview{display:flex;flex-direction:column;gap:2px;align-items:flex-end}.reward-item{display:flex;align-items:center;gap:3px;font-size:10px;color:var(--accent-primary);font-weight:600}.reward-item.coins{color:var(--accent-gold)}.challenge-claim-btn{display:flex;align-items:center;gap:4px;padding:6px 12px;background:linear-gradient(135deg,var(--accent-secondary),#059669);border:none;border-radius:8px;color:#fff;font-size:11px;font-weight:600;cursor:pointer;transition:all .15s}.challenge-claim-btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px #10b98166}.challenge-claimed-badge{width:28px;height:28px;display:flex;align-items:center;justify-content:center;background:var(--accent-secondary);border-radius:50%;color:#fff}.achievement-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000;display:flex;align-items:center;justify-content:center;z-index:2000;pointer-events:none;transition:background .3s}.achievement-overlay.visible{background:#000c;pointer-events:auto}.achievement-confetti{position:absolute;top:0;right:0;bottom:0;left:0;overflow:hidden;pointer-events:none}.confetti-particle{position:absolute;top:-10px;width:8px;height:8px;border-radius:2px;animation:confetti-fall linear forwards}@keyframes confetti-fall{0%{transform:translateY(0) rotate(0);opacity:1}to{transform:translateY(100vh) rotate(720deg);opacity:0}}.achievement-popup{position:relative;width:320px;background:var(--bg-secondary);border-radius:24px;padding:32px 24px;text-align:center;transform:scale(.8) translateY(20px);opacity:0;transition:all .4s cubic-bezier(.34,1.56,.64,1);overflow:hidden}.achievement-popup.visible{transform:scale(1) translateY(0);opacity:1}.achievement-close{position:absolute;top:12px;right:12px;width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border:none;border-radius:50%;color:var(--text-muted);cursor:pointer;transition:all .15s;z-index:10}.achievement-close:hover{background:var(--bg-elevated);color:var(--text-primary)}.achievement-glow{position:absolute;top:-50%;left:-50%;width:200%;height:200%;opacity:.3;animation:glow-rotate 8s linear infinite}@keyframes glow-rotate{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.achievement-badge{position:relative;width:100px;height:100px;margin:0 auto 20px}.achievement-badge-inner{position:absolute;top:8px;right:8px;bottom:8px;left:8px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border-radius:50%;animation:badge-bounce .6s ease-out .2s both}@keyframes badge-bounce{0%{transform:scale(0)}60%{transform:scale(1.2)}to{transform:scale(1)}}.achievement-icon{font-size:40px}.achievement-badge-ring{position:absolute;top:0;right:0;bottom:0;left:0;border:4px solid var(--accent-secondary);border-radius:50%;animation:ring-spin 2s linear infinite}.rarity-common .achievement-badge-ring{border-color:#a3a3a3}.rarity-uncommon .achievement-badge-ring{border-color:#60a5fa}.rarity-rare .achievement-badge-ring{border-color:#fbbf24}.rarity-epic .achievement-badge-ring{border-color:var(--accent-primary)}.rarity-legendary .achievement-badge-ring{border-image:linear-gradient(90deg,#ff6b6b,#feca57,#48dbfb,#ff9ff3,#ff6b6b) 1;animation:ring-spin 1s linear infinite}@keyframes ring-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.achievement-content{position:relative;z-index:1}.achievement-unlocked{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;background:#c41e3a33;border-radius:12px;font-size:11px;font-weight:600;color:var(--accent-primary);margin-bottom:8px}.achievement-name{font-size:22px;font-weight:700;color:var(--text-primary);margin:0 0 6px}.achievement-desc{font-size:13px;color:var(--text-secondary);margin:0 0 12px}.achievement-rarity{display:inline-block;padding:4px 12px;border-radius:8px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px}.achievement-rarity.rarity-common{background:#a3a3a333;color:#a3a3a3}.achievement-rarity.rarity-uncommon{background:#60a5fa33;color:#60a5fa}.achievement-rarity.rarity-rare{background:#fbbf2433;color:#fbbf24}.achievement-rarity.rarity-epic{background:#a855f733;color:var(--accent-primary)}.achievement-rarity.rarity-legendary{background:linear-gradient(90deg,#ff6b6b33,#feca5733,#48dbfb33,#ff9ff333);color:#ff9ff3}.achievement-rewards{display:flex;justify-content:center;gap:16px;margin-top:20px;padding-top:16px;border-top:1px solid var(--border-subtle)}.achievement-reward{display:flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent-primary)}.achievement-reward.coins{color:var(--accent-gold)}.study-analytics{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;padding:24px;max-width:900px;margin:0 auto}.analytics-header{margin-bottom:24px}.analytics-title{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:700;color:var(--text-primary);margin:0}.analytics-title svg{color:var(--accent-primary)}.analytics-section{margin-bottom:20px}.section-title{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--text-secondary);margin:0 0 12px}.section-title svg{color:var(--accent-primary)}.analytics-stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:16px}.analytics-stats-grid.six-col{grid-template-columns:repeat(6,1fr)}.analytics-stat-card{background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:12px;padding:16px;display:flex;align-items:center;gap:12px}.analytics-stat-card.mini{flex-direction:column;align-items:center;text-align:center;padding:14px 10px;gap:4px}.analytics-stat-card.mini .stat-value{font-size:16px}.analytics-stat-card.mini .stat-label{font-size:10px}.stat-icon{width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:10px;flex-shrink:0}.stat-content{flex:1}.stat-value{font-size:18px;font-weight:700;color:var(--text-primary)}.stat-label{font-size:11px;color:var(--text-muted);margin-top:2px}.analytics-chart-section{background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:16px;padding:20px;margin-bottom:20px}.chart-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.chart-title{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--text-primary);margin:0}.chart-navigation{display:flex;align-items:center;gap:8px}.chart-nav-btn{width:28px;height:28px;display:flex;align-items:center;justify-content:center;background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:6px;color:var(--text-secondary);cursor:pointer;transition:all .15s}.chart-nav-btn:hover:not(:disabled){background:var(--bg-elevated);color:var(--text-primary)}.chart-nav-btn:disabled{opacity:.4;cursor:not-allowed}.chart-week-label{font-size:12px;color:var(--text-secondary);min-width:80px;text-align:center}.analytics-bar-chart{display:flex;justify-content:space-between;align-items:flex-end;height:160px;gap:8px}.bar-column{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px}.bar-column.today .bar-fill{background:linear-gradient(180deg,var(--accent-primary),var(--accent-secondary))}.bar-column.today .bar-label{color:var(--accent-primary);font-weight:600}.bar-value{font-size:10px;color:var(--text-muted);height:14px}.bar-container{width:100%;height:100px;background:var(--bg-secondary);border-radius:4px;display:flex;align-items:flex-end;overflow:hidden}.bar-fill{width:100%;background:linear-gradient(180deg,var(--accent-primary),rgba(196,30,58,.5));border-radius:4px 4px 0 0;transition:height .3s ease-out}.bar-label{font-size:11px;color:var(--text-muted)}.bar-date{font-size:9px;color:var(--text-muted);opacity:.6}.analytics-timeline-section{background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:16px;padding:20px}.timeline-title{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--text-primary);margin:0 0 16px}.timeline-empty{text-align:center;padding:24px;color:var(--text-muted)}.timeline-empty p{margin:0 0 4px}.timeline-hint{font-size:12px;opacity:.7}.timeline-list{display:flex;flex-direction:column;gap:12px}.timeline-item{display:flex;align-items:center;gap:12px}.timeline-time{font-size:12px;font-weight:500;color:var(--text-muted);min-width:50px}.timeline-dot{width:10px;height:10px;background:var(--accent-primary);border-radius:50%;box-shadow:0 0 8px #c41e3a80}.timeline-content{flex:1;background:var(--bg-secondary);padding:10px 14px;border-radius:8px}.timeline-course{font-size:13px;font-weight:600;color:var(--text-primary)}.timeline-details{font-size:11px;color:var(--text-muted);margin-top:2px}.timeline-details span+span{margin-left:4px}.study-analytics.ive-design{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;padding:32px;max-width:900px;margin:0 auto}.analytics-hero{display:flex;align-items:center;justify-content:center;gap:0;padding:40px 24px;background:linear-gradient(135deg,var(--bg-secondary) 0%,var(--bg-tertiary) 100%);border:1px solid var(--border-subtle);border-radius:24px;margin-bottom:24px}.hero-stat{flex:1;text-align:center;padding:0 16px}.hero-stat.primary .hero-value{font-size:48px;background:linear-gradient(135deg,var(--text-primary),var(--accent-primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-value{font-size:36px;font-weight:700;color:var(--text-primary);line-height:1.1;letter-spacing:-.02em}.hero-value .hero-unit{font-size:.5em;font-weight:500;opacity:.7}.hero-label{font-size:11px;font-weight:500;color:var(--text-muted);text-transform:uppercase;letter-spacing:.08em;margin-top:8px}.hero-divider{width:1px;height:60px;background:var(--border-subtle)}.metrics-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin-bottom:24px}.metric-card{display:flex;align-items:center;gap:10px;padding:16px;background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:14px;transition:all .2s}.metric-card:hover{border-color:var(--border-medium);transform:translateY(-1px)}.metric-icon{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border-radius:10px;color:var(--text-secondary)}.metric-data{display:flex;flex-direction:column;gap:2px}.metric-value{font-size:16px;font-weight:700;color:var(--text-primary)}.metric-label{font-size:10px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em}.analytics-card{background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:20px;padding:24px;margin-bottom:16px}.analytics-card .card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.analytics-card h3{display:flex;align-items:center;gap:10px;font-size:14px;font-weight:600;color:var(--text-primary);margin:0}.analytics-card h3 svg{color:var(--text-muted)}.card-badge{font-size:13px;font-weight:600;color:var(--accent-primary);padding:4px 12px;background:#c41e3a1a;border-radius:20px}.card-tabs{display:flex;gap:2px;background:var(--bg-tertiary);padding:3px;border-radius:10px}.card-tabs button{padding:6px 14px;font-size:12px;font-weight:500;color:var(--text-muted);background:transparent;border:none;border-radius:8px;cursor:pointer;transition:all .15s}.card-tabs button:hover{color:var(--text-secondary)}.card-tabs button.active{color:var(--text-primary);background:var(--bg-secondary);box-shadow:0 1px 3px #0000001a}.card-total{font-size:12px;color:var(--text-muted)}.trend-indicator{font-size:11px;font-weight:600;padding:4px 10px;border-radius:12px}.trend-indicator.up{color:#c41e3a;background:#10b9811f}.trend-indicator.down{color:#ef4444;background:#ef44441f}.hourly-chart{display:flex;align-items:flex-end;height:80px;gap:2px;padding:0 4px}.hour-bar-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px}.hour-bar-container{width:100%;height:60px;background:var(--bg-tertiary);border-radius:3px;display:flex;align-items:flex-end;overflow:hidden}.hour-bar-fill{width:100%;background:var(--border-medium);border-radius:2px 2px 0 0;transition:height .3s ease-out}.hour-bar-fill.peak{background:linear-gradient(180deg,var(--accent-primary),var(--accent-secondary))}.hour-label{font-size:9px;color:var(--text-muted)}.chart-insight{margin-top:16px;padding-top:16px;border-top:1px solid var(--border-subtle);font-size:13px;color:var(--text-secondary);text-align:center}.chart-insight strong{color:var(--text-primary)}.heatmap-container{display:flex;gap:8px}.heatmap-row-labels{display:flex;flex-direction:column;justify-content:space-between;padding:2px 0;font-size:9px;color:var(--text-muted)}.heatmap-footer{display:flex;align-items:center;justify-content:space-between;margin-top:16px;padding-top:12px;border-top:1px solid var(--border-subtle)}.heatmap-stat{font-size:12px;color:var(--text-secondary)}.weekly-trends-chart{display:flex;align-items:flex-end;height:100px;gap:10px}.trend-column{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px}.trend-column.current .trend-bar{background:linear-gradient(180deg,var(--accent-primary),var(--accent-secondary))}.trend-column.current .trend-label{color:var(--accent-primary);font-weight:600}.trend-value{font-size:10px;color:var(--text-muted);height:14px}.trend-bar-bg{width:100%;height:60px;background:var(--bg-tertiary);border-radius:4px;display:flex;align-items:flex-end;overflow:hidden}.trend-bar{width:100%;background:var(--border-medium);border-radius:3px 3px 0 0;transition:height .3s ease-out}.trend-label{font-size:10px;color:var(--text-muted)}.course-breakdown{display:flex;flex-direction:column;gap:14px}.course-row{display:flex;align-items:center;gap:12px}.course-info{display:flex;align-items:center;gap:10px;min-width:140px}.course-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}.course-name{font-size:13px;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.course-bar-wrap{flex:1}.course-bar-bg{height:6px;background:var(--bg-tertiary);border-radius:3px;overflow:hidden}.course-bar{height:100%;border-radius:3px;transition:width .4s ease-out}.course-time{font-size:12px;font-weight:600;color:var(--text-secondary);min-width:50px;text-align:right}.daily-chart{display:flex;align-items:flex-end;height:100px;gap:8px;margin-bottom:16px}.daily-column{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px}.daily-column.today .daily-bar{background:linear-gradient(180deg,var(--accent-primary),var(--accent-secondary))}.daily-column.today .daily-label{color:var(--accent-primary);font-weight:600}.daily-value{font-size:10px;color:var(--text-muted);height:14px}.daily-bar-bg{width:100%;height:60px;background:var(--bg-tertiary);border-radius:4px;display:flex;align-items:flex-end;overflow:hidden}.daily-bar{width:100%;background:var(--border-medium);border-radius:3px 3px 0 0;transition:height .3s ease-out}.daily-label{font-size:11px;color:var(--text-muted)}.chart-nav{display:flex;align-items:center;gap:8px}.chart-nav button{width:28px;height:28px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:8px;color:var(--text-secondary);cursor:pointer;transition:all .15s}.chart-nav button:hover:not(:disabled){background:var(--bg-elevated);color:var(--text-primary)}.chart-nav button:disabled{opacity:.3;cursor:not-allowed}.chart-nav span{font-size:12px;color:var(--text-secondary);min-width:85px;text-align:center}.week-summary{display:flex;justify-content:center;gap:32px;padding-top:16px;border-top:1px solid var(--border-subtle)}.summary-item{display:flex;flex-direction:column;align-items:center;gap:2px}.summary-value{font-size:18px;font-weight:700;color:var(--text-primary)}.summary-label{font-size:11px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em}.activity-log{display:flex;flex-direction:column;gap:2px}.activity-item{display:flex;align-items:flex-start;gap:12px;padding:12px;border-radius:10px;transition:background .15s}.activity-item:hover{background:var(--bg-tertiary)}.activity-icon{width:28px;height:28px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border-radius:8px;color:var(--text-muted);flex-shrink:0}.activity-content{flex:1;display:flex;flex-direction:column;gap:2px}.activity-text{font-size:13px;color:var(--text-primary)}.activity-time{font-size:11px;color:var(--text-muted)}.empty-state{text-align:center;padding:32px;color:var(--text-muted)}.empty-state p{margin:0 0 4px}.empty-hint{font-size:12px;opacity:.7}@media (max-width: 900px){.metrics-grid{grid-template-columns:repeat(3,1fr)}.analytics-hero{flex-wrap:wrap;gap:16px}.hero-divider{display:none}.hero-stat{min-width:45%}}@media (max-width: 600px){.study-analytics.ive-design{padding:20px}.metrics-grid{grid-template-columns:repeat(2,1fr)}.analytics-hero{padding:24px 16px}.hero-stat.primary .hero-value{font-size:36px}.hero-value{font-size:28px}.course-info{min-width:100px}.week-summary{gap:20px}}.study-analytics.analytics-single-screen{height:calc(100vh - 92px);max-height:calc(100vh - 92px);max-width:1320px;margin:0 auto;padding:16px 20px;overflow:hidden;display:flex;flex-direction:column;gap:12px}.analytics-compact-status{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-secondary);letter-spacing:.01em}.status-dot{width:8px;height:8px;border-radius:999px}.status-dot.ok{background:#22c55e;box-shadow:0 0 10px #22c55e59}.status-dot.warn{background:#f59e0b;box-shadow:0 0 10px #f59e0b59}.analytics-kpi-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:10px}@keyframes analytics-live-pulse{0%{box-shadow:0 0 #22c55e8c}70%{box-shadow:0 0 0 7px #22c55e00}to{box-shadow:0 0 #22c55e00}}.analytics-kpi-card{background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:14px;padding:12px;min-height:94px;display:flex;flex-direction:column;justify-content:center;gap:6px}.analytics-kpi-card .kpi-icon{width:28px;height:28px;border-radius:9px;display:flex;align-items:center;justify-content:center;color:var(--text-secondary);background:var(--bg-tertiary)}.analytics-kpi-card .kpi-value{font-size:24px;line-height:1.05;letter-spacing:-.02em;font-weight:700;color:var(--text-primary)}.analytics-kpi-card .kpi-label{font-size:11px;letter-spacing:.04em;text-transform:uppercase;color:var(--text-muted)}.analytics-main-grid{min-height:0;flex:1;display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:10px}.analytics-panel{min-height:0;border:1px solid var(--border-subtle);border-radius:16px;background:var(--bg-secondary);display:flex;flex-direction:column}.analytics-panel .panel-header{padding:12px 14px;border-bottom:1px solid var(--border-subtle);display:flex;justify-content:space-between;align-items:center}.analytics-panel .panel-header h3{margin:0;font-size:13px;font-weight:600;color:var(--text-primary)}.analytics-panel .panel-header span{font-size:11px;color:var(--text-muted)}.analytics-panel .panel-body{min-height:0;flex:1;padding:12px 14px}.analytics-panel .panel-body.split{display:grid;grid-template-columns:1fr;gap:10px}.seven-day-bars{height:100%;display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:8px;align-items:end}.seven-day-col{min-width:0;display:flex;flex-direction:column;align-items:center;gap:6px}.seven-day-value{font-size:10px;color:var(--text-muted);white-space:nowrap}.seven-day-track{width:100%;height:120px;border-radius:8px;overflow:hidden;background:var(--bg-tertiary);display:flex;align-items:flex-end}.seven-day-fill{width:100%;border-radius:8px 8px 0 0;background:linear-gradient(180deg,var(--accent-primary),var(--accent-secondary));transition:height .25s ease}.seven-day-label{font-size:11px;color:var(--text-secondary)}.usage-row{display:flex;flex-direction:column;gap:6px}.usage-row+.usage-row{margin-top:9px}.usage-meta{display:flex;justify-content:space-between;align-items:baseline;gap:10px}.usage-name{font-size:12px;font-weight:600;color:var(--text-primary);max-width:55%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.usage-stats{font-size:11px;color:var(--text-muted);text-align:right}.usage-bar{height:8px;width:100%;border-radius:999px;background:var(--bg-tertiary);overflow:hidden}.usage-bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--accent-primary),var(--accent-secondary))}.signal-block h4{margin:0 0 6px;font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted)}.signal-row{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:6px 0;border-bottom:1px solid var(--border-subtle)}.signal-row span{font-size:12px;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.signal-row strong{font-size:12px;color:var(--text-primary)}.signal-empty{margin:0;font-size:12px;color:var(--text-muted)}@media (max-width: 1200px){.study-analytics.analytics-single-screen{height:auto;max-height:none;overflow-y:auto}.analytics-kpi-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.analytics-main-grid{grid-template-columns:1fr}}@media (max-width: 700px){.analytics-kpi-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}.glass-modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);display:flex;align-items:center;justify-content:center;z-index:1000}.glass-modal{width:100%;max-width:380px;padding:32px;background:#0e0e10cc;border:1px solid rgba(255,255,255,.05);border-radius:24px;backdrop-filter:blur(60px) saturate(140%);-webkit-backdrop-filter:blur(60px) saturate(140%);box-shadow:0 48px 100px #0009,0 0 0 .5px #ffffff08 inset,0 1px #ffffff0a inset;animation:cardEntrance .25s ease-out}.glass-modal h2{font-size:18px;font-weight:700;color:var(--text-primary);margin:0 0 20px}.glass-field{margin-bottom:16px}.glass-field label{display:block;font-size:12px;font-weight:600;color:var(--text-muted);margin-bottom:8px;text-transform:uppercase;letter-spacing:.5px}.glass-field input{width:100%;padding:12px 14px;background:var(--bg-secondary);border:1px solid var(--border-medium);border-radius:10px;color:var(--text-primary);font-size:15px;outline:none;transition:border-color .15s}.glass-field input:focus{border-color:var(--accent-primary)}.glass-field input::placeholder{color:var(--text-muted)}.glass-icon-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}.glass-icon-btn{aspect-ratio:1;display:flex;align-items:center;justify-content:center;background:var(--bg-secondary);border:1px solid transparent;border-radius:8px;font-size:18px;cursor:pointer;transition:all .15s}.glass-icon-btn:hover{background:var(--bg-tertiary)}.glass-icon-btn.selected{background:#c41e3a33;border-color:var(--accent-primary)}.glass-color-grid{display:flex;gap:8px}.glass-color-btn{width:32px;height:32px;border:2px solid transparent;border-radius:50%;cursor:pointer;transition:all .15s}.glass-color-btn:hover{transform:scale(1.1)}.glass-color-btn:active{transform:scale(.93)}.glass-color-btn:focus-visible{outline:2px solid rgba(255,255,255,.6);outline-offset:2px}.glass-color-btn.selected{border-color:#fff;box-shadow:0 0 0 2px var(--bg-primary)}.glass-modal-actions{display:flex;gap:10px;margin-top:20px}.glass-btn-ghost{flex:1;padding:12px;background:transparent;border:1px solid var(--border-medium);border-radius:10px;color:var(--text-secondary);font-size:14px;font-weight:600;cursor:pointer;transition:all .15s}.glass-btn-ghost:hover{background:var(--bg-secondary)}.glass-btn-ghost:active{transform:scale(.97)}.glass-btn-ghost:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px}.glass-btn-primary{flex:1;padding:12px;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));border:none;border-radius:10px;color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:all .15s}.glass-btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 16px #c41e3a66}.glass-btn-primary:active{transform:scale(.97) translateY(0);box-shadow:0 2px 8px #c41e3a4d}.glass-btn-primary:focus-visible{outline:2px solid rgba(255,255,255,.5);outline-offset:2px}.course-create-modal{max-width:520px;padding:28px;border-radius:22px;background:linear-gradient(180deg,#0c0e12f5,#0a0b0eeb);border-color:#ffffff1a}.course-create-header{margin-bottom:14px}.course-create-kicker{margin:0 0 8px;font-size:11px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:#ffffff80}.course-create-modal h2{margin:0;font-size:24px;letter-spacing:-.02em}.course-create-subtitle{margin:8px 0 0;font-size:13px;color:#ffffff9e}.course-creator-shell{display:flex;flex-direction:column;gap:16px}.course-creator-shell.embedded{width:min(560px,100%);margin-top:4px;padding:22px;border-radius:22px;border:1px solid rgba(255,255,255,.08);background:#ffffff06;text-align:left}.course-creator-toggle{display:inline-flex;align-items:center;gap:4px;padding:4px;border-radius:12px;background:#ffffff0a;border:1px solid rgba(255,255,255,.08);width:fit-content;max-width:100%}.course-creator-toggle button{height:34px;padding:0 12px;border:none;border-radius:9px;background:transparent;color:var(--text-secondary);font-size:12px;font-weight:600;cursor:pointer;transition:background .18s ease,color .18s ease}.course-creator-toggle button.active{background:#ffffff1f;color:var(--text-primary)}.course-creator-toggle button:hover{color:var(--text-primary)}.course-import-panel,.course-manual-panel{display:flex;flex-direction:column;gap:14px}.course-import-dropzone{display:flex;flex-direction:column;align-items:flex-start;gap:10px;padding:20px;border-radius:18px;border:1px dashed rgba(255,255,255,.14);background:#ffffff06;color:var(--text-secondary);cursor:pointer;transition:border-color .18s ease,background .18s ease,transform .18s ease}.course-import-dropzone svg{color:var(--text-primary);opacity:.9}.course-import-dropzone strong{font-size:15px;color:var(--text-primary)}.course-import-dropzone span{font-size:13px;line-height:1.55}.course-import-dropzone.dragging,.course-import-dropzone:hover{background:#ffffff0d;border-color:#ffffff38;transform:translateY(-1px)}.course-import-dropzone.busy{cursor:progress}.course-import-browse{margin-top:6px;height:38px;padding:0 14px;border:1px solid rgba(255,255,255,.1);border-radius:11px;background:#ffffff0d;color:var(--text-primary);font-size:12px;font-weight:600;cursor:pointer}.course-creator-hint{margin:0;font-size:12px;line-height:1.5;color:#ffffff8a}.course-import-error{margin:0;font-size:12px;line-height:1.45;color:#fca5a5}.course-create-preview{display:flex;align-items:center;gap:12px;margin-bottom:18px;padding:12px 13px;border-radius:14px;border:1px solid rgba(255,255,255,.1);background:#ffffff08;box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--course-create-accent),transparent 78%)}.course-create-preview-icon{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;font-size:20px;background:color-mix(in srgb,var(--course-create-accent),#0f1115 72%)}.course-create-preview-copy{display:flex;flex-direction:column;min-width:0}.course-create-preview-copy strong{font-size:14px;font-weight:600;color:#fffffff2;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.course-create-preview-copy span{margin-top:2px;font-size:12px;color:#ffffff94}.course-create-name-field label{color:#ffffff9e}.course-create-name-field input{height:44px;border-radius:12px}.course-create-field-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:8px}.course-create-field-top span{font-size:12px;color:#ffffff8f}.course-create-icon-btn{border-radius:10px;background:#ffffff0a;border-color:#ffffff14}.course-create-icon-btn:hover{background:#ffffff17;transform:translateY(-1px)}.course-create-icon-btn.selected{background:color-mix(in srgb,var(--accent-primary),transparent 78%);border-color:color-mix(in srgb,var(--accent-primary),white 18%)}.course-create-color-btn{width:34px;height:34px;border-width:1.5px;border-color:#ffffff3d}.course-create-color-btn.selected{border-color:#fff;box-shadow:0 0 0 2px #0c0c0eeb}.course-create-modal .glass-modal-actions{margin-top:22px}.course-create-modal .glass-btn-ghost,.course-create-modal .glass-btn-primary{border-radius:12px;height:44px}@media (max-width: 640px){.course-create-modal{max-width:94vw;padding:22px}.course-create-modal h2{font-size:22px}.course-creator-shell.embedded{padding:18px}.course-creator-toggle{width:100%}.course-creator-toggle button{flex:1;justify-content:center}}.glass-btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}.premium-main{min-height:400px}.premium-empty{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:80px 40px;background:var(--bg-secondary);border-radius:24px;border:1px solid var(--border-subtle);text-align:center;overflow:hidden}.premium-empty-glow{position:absolute;top:-100px;left:50%;transform:translate(-50%);width:300px;height:200px;background:radial-gradient(ellipse,rgba(196,30,58,.15),transparent 70%);pointer-events:none}.premium-empty-icon{display:flex;align-items:center;justify-content:center;width:80px;height:80px;background:linear-gradient(135deg,#c41e3a33,#c41e3a0d);border-radius:24px;margin-bottom:24px;color:var(--accent-primary)}.premium-empty h2{font-size:24px;font-weight:600;margin-bottom:8px}.premium-empty p{color:var(--text-muted);margin-bottom:28px;max-width:300px}.premium-cta-btn{display:flex;align-items:center;gap:10px;padding:14px 28px;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));color:#fff;border:none;border-radius:14px;font-size:15px;font-weight:600;cursor:pointer;transition:all .2s;box-shadow:0 4px 20px #c41e3a59}.premium-cta-btn:hover{transform:translateY(-2px);box-shadow:0 8px 32px #c41e3a73}.premium-courses-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}.premium-course-card{position:relative;padding:20px;background:var(--bg-secondary);border-radius:16px;border:1px solid var(--border-subtle);cursor:pointer;transition:all .25s;overflow:hidden}.premium-course-card:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(135deg,rgba(255,255,255,.03),transparent);opacity:0;transition:opacity .25s}.premium-course-card:hover{transform:translateY(-4px);border-color:var(--accent-primary);box-shadow:0 12px 40px #0003}.premium-course-card:hover:before{opacity:1}.premium-course-card.dragging{opacity:.5}.premium-course-card.drag-over{border-color:var(--accent-primary);background:#c41e3a0d}.premium-card-glow{position:absolute;top:-30px;right:-30px;width:100px;height:100px;border-radius:50%;filter:blur(40px);opacity:.15;pointer-events:none}.premium-card-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:16px}.premium-card-icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:26px;box-shadow:0 4px 12px #00000026}.premium-card-actions{display:flex;align-items:center;gap:6px;opacity:0;transition:opacity .2s}.premium-course-card:hover .premium-card-actions{opacity:1}.premium-drag-handle,.premium-delete-btn{display:flex;align-items:center;justify-content:center;width:28px;height:28px;background:var(--bg-tertiary);border:none;border-radius:8px;color:var(--text-muted);cursor:pointer;transition:all .15s}.premium-drag-handle:hover{color:var(--text-primary)}.premium-delete-btn:hover{background:#ef444426;color:#ef4444}.premium-card-body{margin-bottom:16px}.premium-card-body h3{font-size:17px;font-weight:600;margin-bottom:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.premium-card-stats{display:flex;align-items:center;gap:8px}.premium-pdf-count{font-size:13px;color:var(--text-muted)}.premium-card-progress{display:flex;align-items:center;gap:10px}.premium-progress-bar{flex:1;height:6px;background:var(--bg-tertiary);border-radius:3px;overflow:hidden}.premium-progress-fill{height:100%;border-radius:3px;transition:width .4s ease}.premium-progress-text{font-size:12px;font-weight:600;color:var(--text-secondary);min-width:32px;text-align:right}.premium-card-arrow{position:absolute;right:16px;top:50%;transform:translateY(-50%);color:var(--text-muted);opacity:0;transition:all .2s}.premium-course-card:hover .premium-card-arrow{opacity:1;right:12px;color:var(--accent-primary)}.premium-add-card{display:flex;align-items:center;justify-content:center;min-height:180px;border:2px dashed var(--border-medium);border-radius:16px;cursor:pointer;transition:all .25s;background:transparent}.premium-add-card:hover{border-color:var(--accent-primary);background:#c41e3a0a}.premium-add-card-inner{display:flex;flex-direction:column;align-items:center;gap:10px;color:var(--text-muted);transition:color .2s}.premium-add-card:hover .premium-add-card-inner{color:var(--accent-primary)}.premium-add-card span{font-size:14px;font-weight:500}.study-sky{background:linear-gradient(180deg,#0a0a1a,#1a1a3a);border-radius:20px;border:1px solid rgba(196,30,58,.2);overflow:hidden}.sky-header{display:flex;align-items:center;gap:8px;padding:16px 20px;border-bottom:1px solid rgba(255,255,255,.06);color:var(--text-secondary);font-size:13px;font-weight:600}.sky-header svg{color:var(--accent-primary-hover)}.sky-canvas{position:relative;height:200px;background:radial-gradient(ellipse at 50% 100%,rgba(196,30,58,.15) 0%,transparent 70%);overflow:hidden}.sky-glow{position:absolute;bottom:0;left:50%;transform:translate(-50%);width:200px;height:100px;background:radial-gradient(ellipse,rgba(139,21,56,.2) 0%,transparent 70%);pointer-events:none}.sky-star{position:absolute;background:#fff;border-radius:50%;box-shadow:0 0 6px 2px #fff9;animation:twinkle 2s ease-in-out infinite}@keyframes twinkle{0%,to{opacity:.4;transform:scale(1)}50%{opacity:1;transform:scale(1.2)}}.sky-count{position:absolute;bottom:20px;left:50%;transform:translate(-50%);display:flex;flex-direction:column;align-items:center;gap:4px;color:#fff}.sky-count svg{color:#fbbf24}.sky-count span{font-size:24px;font-weight:700}.sky-empty{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;color:var(--text-muted);font-size:13px;text-align:center}.sky-stats{display:flex;justify-content:center;padding:16px;border-top:1px solid rgba(255,255,255,.06)}.sky-stat{display:flex;flex-direction:column;align-items:center;gap:4px}.sky-stat .stat-value{font-size:20px;font-weight:700;color:var(--text-primary)}.sky-stat .stat-label{font-size:11px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}.premium-sidebar{display:flex;flex-direction:column;gap:20px}.premium-level-card{display:flex;align-items:center;gap:20px;padding:24px;background:linear-gradient(135deg,var(--bg-secondary),var(--bg-tertiary));border-radius:20px;border:1px solid var(--border-subtle)}.premium-level-ring{position:relative;width:80px;height:80px;flex-shrink:0}.premium-level-ring svg{width:100%;height:100%;transform:rotate(-90deg)}.premium-ring-bg{fill:none;stroke:var(--bg-elevated);stroke-width:8}.premium-ring-fill{fill:none;stroke:url(#levelGradient);stroke-width:8;stroke-linecap:round;transition:stroke-dasharray .5s ease}.premium-level-inner{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center}.premium-level-num{font-size:24px;font-weight:700;background:linear-gradient(135deg,var(--accent-primary),var(--accent-primary-hover));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.premium-level-label{font-size:9px;font-weight:600;color:var(--text-muted);letter-spacing:1px}.premium-level-info{flex:1}.premium-xp-current{font-size:20px;font-weight:700;margin-bottom:4px}.premium-xp-next{font-size:12px;color:var(--text-muted)}.premium-stats-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.premium-stat-card{display:flex;align-items:center;gap:12px;padding:16px;background:var(--bg-secondary);border-radius:14px;border:1px solid var(--border-subtle)}.premium-stat-icon{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;flex-shrink:0}.premium-stat-icon.flame{background:color-mix(in srgb,var(--accent-streak) 16%,transparent);color:var(--accent-streak)}.premium-stat-icon.coins{background:#eab30826;color:#eab308}.premium-stat-content{display:flex;flex-direction:column}.premium-stat-value{font-size:18px;font-weight:700}.premium-stat-label{font-size:11px;color:var(--text-muted)}.premium-widget{background:var(--bg-secondary);border-radius:16px;border:1px solid var(--border-subtle);padding:18px}.premium-widget-header{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:16px}.premium-badge-count{margin-left:auto;font-size:12px;color:var(--text-muted)}.premium-activity-chart{display:flex;align-items:flex-end;gap:8px;height:70px;margin-bottom:12px}.premium-chart-bar{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;height:100%}.premium-bar{width:100%;min-height:8px;background:var(--bg-tertiary);border-radius:4px;margin-top:auto;transition:all .3s}.premium-bar.active{background:linear-gradient(180deg,#c41e3a,#059669)}.premium-chart-bar.today .premium-bar{box-shadow:0 0 0 2px var(--accent-primary)}.premium-bar-label{font-size:10px;color:var(--text-muted)}.premium-activity-total{display:flex;align-items:center;justify-content:center;gap:6px;font-size:12px;color:var(--text-muted)}.premium-activity-total svg{color:var(--accent-secondary)}.premium-activity-list{display:flex;flex-direction:column;gap:10px}.premium-activity-item{display:flex;align-items:center;gap:10px;font-size:13px}.premium-activity-icon{font-size:14px}.premium-activity-text{flex:1;color:var(--text-secondary)}.premium-activity-xp{font-weight:600;color:var(--accent-secondary)}.premium-badges-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}.premium-badge{aspect-ratio:1;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border-radius:10px;font-size:18px;position:relative;opacity:.3;filter:grayscale(1);transition:all .2s}.premium-badge.unlocked{opacity:1;filter:none;background:linear-gradient(135deg,#fbbf2433,#fbbf240d)}.premium-badge-lock{position:absolute;bottom:2px;right:2px;color:var(--text-muted)}.premium-modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000bf;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.premium-modal{background:var(--bg-secondary);border-radius:24px;padding:32px;width:100%;max-width:420px;border:1px solid var(--border-subtle);box-shadow:0 24px 80px #0006}.premium-modal-header{margin-bottom:28px}.premium-modal-header h2{font-size:24px;font-weight:700;margin-bottom:6px}.premium-modal-header p{font-size:14px;color:var(--text-muted)}.premium-modal-body{margin-bottom:28px}.premium-field{margin-bottom:20px}.premium-field label{display:block;font-size:12px;font-weight:600;color:var(--text-muted);margin-bottom:10px;text-transform:uppercase;letter-spacing:.5px}.premium-field input{width:100%;padding:14px 16px;background:var(--bg-tertiary);border:1px solid var(--border-medium);border-radius:12px;color:var(--text-primary);font-size:15px;transition:all .2s}.premium-field input:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px #c41e3a26}.premium-icon-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}.premium-icon-btn{aspect-ratio:1;border:1px solid var(--border-subtle);border-radius:10px;background:var(--bg-tertiary);font-size:20px;cursor:pointer;transition:all .15s}.premium-icon-btn:hover{border-color:var(--accent-primary);transform:scale(1.05)}.premium-icon-btn.selected{border-color:var(--accent-primary);background:#c41e3a26;box-shadow:0 0 0 2px #c41e3a4d}.premium-color-grid{display:flex;gap:10px}.premium-color-btn{width:36px;height:36px;border:2px solid transparent;border-radius:50%;cursor:pointer;transition:all .15s;box-shadow:0 2px 8px #0003}.premium-color-btn:hover{transform:scale(1.15)}.premium-color-btn.selected{border-color:#fff;transform:scale(1.1);box-shadow:0 0 0 3px var(--bg-secondary),0 4px 12px #0000004d}.premium-modal-footer{display:flex;gap:12px}.premium-btn-ghost{flex:1;padding:14px;background:transparent;border:1px solid var(--border-medium);border-radius:12px;color:var(--text-secondary);font-size:14px;font-weight:500;cursor:pointer;transition:all .15s}.premium-btn-ghost:hover{background:var(--bg-tertiary);border-color:var(--text-muted)}.premium-btn-primary{flex:1;display:flex;align-items:center;justify-content:center;gap:8px;padding:14px;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));border:none;border-radius:12px;color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:all .15s}.premium-btn-primary:hover{box-shadow:0 4px 16px #c41e3a66}.premium-btn-primary:disabled{opacity:.5;cursor:not-allowed}.materials-section{background:var(--bg-secondary);border-radius:12px;border:1px solid var(--border-subtle);margin-bottom:16px;overflow:hidden}.materials-section .section-header{padding:14px 16px;border-bottom:1px solid var(--border-subtle)}.materials-content{padding:12px}.upload-zone-inline{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:32px 16px;background:var(--bg-tertiary);border:2px dashed var(--border-medium);border-radius:10px;color:var(--text-muted);cursor:pointer;transition:all .2s;text-align:center}.upload-zone-inline:hover{border-color:var(--accent-primary);color:var(--accent-primary);background:#c41e3a0d}.upload-zone-inline.dragging{border-color:var(--accent-primary);background:#c41e3a1a;color:var(--accent-primary)}.upload-zone-inline.uploading{cursor:wait}.upload-zone-inline span{font-size:13px;font-weight:500}.add-pdf-btn{display:flex;align-items:center;justify-content:center;gap:6px;padding:10px;margin-top:8px;background:transparent;border:1px dashed var(--border-medium);border-radius:8px;color:var(--text-muted);font-size:12px;font-weight:500;cursor:pointer;transition:all .2s}.add-pdf-btn:hover{border-color:var(--accent-primary);color:var(--accent-primary);background:#c41e3a0d}.file-icon{width:28px;height:28px;display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0;cursor:pointer;border-radius:6px;transition:background .15s}.file-icon:hover{background:var(--bg-elevated)}.native-emoji-capture-input{position:fixed;left:-200vw;top:-200vh;width:1px;height:1px;opacity:0;pointer-events:none}.native-emoji-hint{position:fixed;left:50%;bottom:max(14px,env(safe-area-inset-bottom));transform:translate(-50%);padding:8px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.14);background:#07080aeb;color:#ffffffd6;font-size:11px;font-weight:600;letter-spacing:.01em;z-index:620;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);box-shadow:0 12px 30px #00000061;pointer-events:none}html.light-mode .native-emoji-hint{border-color:#0a0e1829;background:#f7f9fcf2;color:#121928db;box-shadow:0 10px 24px #0c182e1f}.rename-input{width:100%;padding:4px 6px;background:var(--bg-primary);border:1px solid var(--accent-primary);border-radius:4px;color:var(--text-primary);font-size:12px;outline:none}.file-delete-btn{width:24px;height:24px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;border-radius:4px;color:var(--text-muted);cursor:pointer;opacity:0;transition:all .15s;flex-shrink:0}.pdf-item:hover .file-delete-btn{opacity:1}.file-delete-btn:hover{background:#ef444433;color:#ef4444}.context-menu{position:fixed;background:var(--bg-secondary);border:1px solid var(--border-medium);border-radius:10px;padding:6px;min-width:140px;z-index:1000;box-shadow:0 8px 24px #0000004d}.context-menu button{display:flex;align-items:center;gap:8px;width:100%;padding:8px 10px;background:transparent;border:none;border-radius:6px;color:var(--text-primary);font-size:13px;cursor:pointer;transition:background .15s}.context-menu button:hover{background:var(--bg-elevated)}.context-menu button.danger{color:#ef4444}.context-menu button.danger:hover{background:#ef444426}.context-menu-emoji-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;padding:4px 2px 2px}.context-menu-emoji-btn{width:100%;min-width:0;justify-content:center;padding:6px 0;border-radius:8px;font-size:16px;line-height:1}.context-menu-hint{margin:6px 8px 4px;font-size:11px;line-height:1.35;color:var(--text-muted)}.daily-reward-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000c;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:2000;animation:fadeIn .3s ease}.daily-reward-modal{background:linear-gradient(180deg,var(--bg-secondary) 0%,var(--bg-primary) 100%);border:1px solid var(--border-medium);border-radius:24px;padding:32px;width:360px;text-align:center;position:relative;box-shadow:0 0 60px #c41e3a4d;animation:scaleIn .4s cubic-bezier(.34,1.56,.64,1)}@keyframes scaleIn{0%{transform:scale(.8);opacity:0}to{transform:scale(1);opacity:1}}.daily-reward-close{position:absolute;top:16px;right:16px;width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border:none;border-radius:50%;color:var(--text-muted);cursor:pointer;transition:all .15s}.daily-reward-close:hover{background:var(--bg-elevated);color:var(--text-primary)}.daily-reward-header{display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:8px}.daily-reward-header h2{font-size:24px;font-weight:700;color:var(--text-primary);margin:0}.header-sparkle{color:#fbbf24;animation:sparkle 1.5s ease-in-out infinite}.header-sparkle.left{animation-delay:0s}.header-sparkle.right{animation-delay:.5s}@keyframes sparkle{0%,to{opacity:.5;transform:scale(1)}50%{opacity:1;transform:scale(1.2)}}.daily-reward-streak{display:flex;align-items:center;justify-content:center;gap:6px;color:var(--text-secondary);font-size:14px;margin-bottom:24px}.daily-reward-streak svg{color:var(--accent-streak)}.streak-multiplier{background:linear-gradient(135deg,var(--accent-streak),var(--accent-primary));color:#fff;padding:2px 8px;border-radius:10px;font-size:11px;font-weight:700;margin-left:8px}.daily-reward-chest{width:120px;height:120px;margin:0 auto 16px;cursor:pointer;position:relative}.chest-closed,.chest-opened{width:100%;height:100%;display:flex;align-items:center;justify-content:center;position:relative}.chest-emoji{font-size:72px;filter:drop-shadow(0 4px 12px rgba(0,0,0,.3));transition:transform .3s}.daily-reward-chest:hover .chest-emoji{transform:scale(1.1)}.chest-glow{position:absolute;top:-20px;right:-20px;bottom:-20px;left:-20px;background:radial-gradient(circle,rgba(251,191,36,.4) 0%,transparent 70%);border-radius:50%;animation:pulse 2s ease-in-out infinite}.daily-reward-chest.shaking{animation:chestShake .8s ease-in-out}@keyframes chestShake{0%,to{transform:rotate(0)}10%,30%,50%,70%,90%{transform:rotate(-8deg) scale(1.05)}20%,40%,60%,80%{transform:rotate(8deg) scale(1.05)}}.chest-opened .chest-emoji{animation:popIn .5s cubic-bezier(.34,1.56,.64,1)}@keyframes popIn{0%{transform:scale(0);opacity:0}to{transform:scale(1);opacity:1}}.chest-burst{position:absolute;top:-40px;right:-40px;bottom:-40px;left:-40px;background:radial-gradient(circle,rgba(251,191,36,.6) 0%,transparent 60%);animation:burst .6s ease-out forwards}@keyframes burst{0%{transform:scale(.5);opacity:1}to{transform:scale(2);opacity:0}}.chest-hint{color:var(--text-muted);font-size:13px;margin:0 0 20px;animation:bounce 1s ease-in-out infinite}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-4px)}}.daily-rewards-display{display:flex;justify-content:center;gap:24px;margin-bottom:20px;animation:slideUp .4s ease-out}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.reward-item{display:flex;flex-direction:column;align-items:center;gap:4px}.reward-item svg{color:var(--accent-primary)}.reward-item.xp svg{color:var(--accent-primary-hover)}.reward-item.coins svg{color:#fbbf24}.reward-value{font-size:28px;font-weight:800;color:var(--text-primary)}.reward-label{font-size:12px;color:var(--text-muted)}.reward-bonus{width:100%;text-align:center;font-size:16px;font-weight:600;color:#fbbf24;margin-top:8px;animation:pulse 1s ease-in-out infinite}.daily-reward-claim{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:14px 24px;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));border:none;border-radius:12px;color:#fff;font-size:16px;font-weight:600;cursor:pointer;transition:all .2s;animation:slideUp .5s ease-out .2s both}.daily-reward-claim:hover{transform:translateY(-2px);box-shadow:0 8px 24px #c41e3a66}.daily-reward-week{display:flex;justify-content:center;gap:8px;margin-top:24px;padding-top:20px;border-top:1px solid var(--border-subtle)}.week-day{width:36px;height:36px;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--bg-tertiary);border:2px solid var(--border-subtle);border-radius:10px;position:relative}.week-day.claimed{background:#10b98133;border-color:#c41e3a}.week-day.current{background:#c41e3a33;border-color:var(--accent-primary);box-shadow:0 0 12px #c41e3a66}.day-number{font-size:12px;font-weight:600;color:var(--text-secondary)}.week-day.claimed .day-number,.week-day.current .day-number{color:var(--text-primary)}.day-bonus{font-size:10px;position:absolute;top:-6px;right:-6px}.top-bar{display:flex;align-items:center;justify-content:space-between;height:56px;padding:0 20px;background:#0c0c10f2;border-bottom:1px solid rgba(255,255,255,.06);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);position:sticky;top:0;z-index:100}.bar-left{display:flex;align-items:center;gap:12px;flex:1}.bar-back{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:#ffffff0f;border:none;border-radius:8px;color:var(--text-secondary);cursor:pointer;transition:all .15s}.bar-back:hover{background:#ffffff1a;color:#fff}.bar-brand{display:flex;align-items:center;gap:10px}.bar-logo{width:32px;height:32px;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:800;color:#fff}.bar-title{font-size:17px;font-weight:700;color:var(--text-primary)}.bar-sep{color:var(--text-muted);opacity:.3;margin:0 4px}.bar-course{display:flex;align-items:center;gap:6px;font-size:14px;font-weight:600}.bar-course-icon{font-size:16px}.bar-center{flex:1;display:flex;justify-content:center;max-width:400px}.bar-xp{display:flex;align-items:center;gap:12px;width:100%}.bar-level{display:flex;align-items:center;gap:5px;padding:5px 10px;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));border-radius:8px;font-size:13px;font-weight:700;color:#fff;flex-shrink:0}.bar-level svg{width:14px;height:14px}.bar-xp-track{flex:1;height:8px;background:#ffffff14;border-radius:4px;overflow:hidden}.bar-xp-fill{height:100%;background:linear-gradient(90deg,var(--accent-primary),var(--accent-primary-hover));border-radius:4px;transition:width .4s ease}.bar-xp-text{font-size:12px;font-weight:600;color:var(--text-muted);white-space:nowrap;flex-shrink:0}.bar-right{display:flex;align-items:center;gap:8px;flex:1;justify-content:flex-end}.bar-stat{display:flex;align-items:center;gap:6px;padding:6px 12px;background:#ffffff0a;border:1px solid rgba(255,255,255,.06);border-radius:8px;font-size:13px;font-weight:600;color:var(--text-primary);transition:all .15s}.bar-stat:hover{background:#ffffff14}.bar-stat.fire svg{color:var(--accent-streak)}.bar-stat.bolt svg{color:#22d3ee}.bar-stat .coin-emoji{font-size:14px}.bar-avatar{width:32px;height:32px;background:linear-gradient(135deg,#c41e3a,#059669);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;color:#fff;margin-left:8px;cursor:pointer;transition:transform .15s}.bar-avatar:hover{transform:scale(1.05)}.main-header.glass-header{position:fixed;top:0;left:0;right:0;z-index:100;display:flex;align-items:center;justify-content:space-between;height:64px;padding:0 32px;background:#05050666;border-bottom:1px solid rgba(255,255,255,.03);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);box-shadow:0 4px 24px #0003;transition:transform .35s cubic-bezier(.4,0,.2,1),opacity .35s ease}.header-brand{display:flex;align-items:center;cursor:pointer;transition:opacity .2s}.header-brand:hover{opacity:.8}.brand-text{font-size:18px;font-weight:800;color:#fff;letter-spacing:-.5px}.header-spacer{flex:1}.header-right{display:flex;align-items:center;gap:12px}.glass-chip{display:flex;align-items:center;gap:6px;padding:6px 12px;background:#ffffff05;border:1px solid rgba(255,255,255,.05);border-radius:20px;font-size:13px;font-weight:600;color:#ffffffe6;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);-webkit-user-select:none;user-select:none;transition:background .2s ease,border-color .2s ease,transform .2s ease}.glass-chip:hover{background:#ffffff0d;border-color:#ffffff1a;transform:translateY(-1px)}.glass-chip svg{color:#ffffff80}.streak-chip{color:#ffffffdb;background:#ffffff05;border-color:#ffffff24;box-shadow:inset 0 1px #ffffff0f}.streak-chip:hover{background:#ffffff0b;border-color:#ffffff38}.streak-chip svg{color:#ffffffb8;filter:none}.glass-icon-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:#ffffff05;border:1px solid rgba(255,255,255,.05);border-radius:10px;color:#ffffffb3;cursor:pointer;transition:all .2s ease;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.glass-icon-btn:hover{background:#ffffff0d;border-color:#ffffff1a;color:#fff}.glass-icon-btn:active{transform:scale(.9);background:#ffffff14}.glass-icon-btn:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px}.glass-grade-btn{height:36px;display:inline-flex;align-items:center;gap:7px;padding:0 12px;border-radius:10px;border:1px solid rgba(255,255,255,.08);background:linear-gradient(135deg,#c41e3a2e,#722bff24);color:#ffffffeb;cursor:pointer;transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease}.glass-grade-btn span{font-size:12px;font-weight:650;letter-spacing:.02em;white-space:nowrap}.glass-grade-btn:hover{transform:translateY(-1px);border-color:#fff3;box-shadow:0 8px 20px #c41e3a33}.glass-grade-btn.active{border-color:#ffffff47;box-shadow:0 0 0 1px #ffffff24,0 10px 30px #c41e3a47}.grade-sim-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1300;background:#04070ebd;backdrop-filter:blur(9px);-webkit-backdrop-filter:blur(9px);display:flex;align-items:center;justify-content:center;padding:20px;animation:fadeIn .18s ease}.grade-sim-modal{width:min(1120px,96vw);max-height:min(90vh,900px);border-radius:22px;border:1px solid var(--border-medium);background:linear-gradient(180deg,#0b0f1af2,#080b12eb);box-shadow:0 36px 80px #00000073;padding:18px;display:flex;flex-direction:column;gap:14px;overflow:hidden}.grade-sim-header{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}.grade-sim-kicker{margin:0 0 4px;font-size:11px;text-transform:uppercase;letter-spacing:.12em;color:var(--accent-primary);font-weight:700}.grade-sim-header h2{margin:0;font-size:22px;color:var(--text-primary);letter-spacing:-.02em}.grade-sim-header p{margin:6px 0 0;color:var(--text-secondary);font-size:13px;line-height:1.45}.grade-sim-close{width:34px;height:34px;flex-shrink:0;border:1px solid var(--border-medium);border-radius:10px;background:var(--bg-tertiary);color:var(--text-muted);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:all .14s ease}.grade-sim-close:hover{color:var(--text-primary);border-color:var(--border-strong)}.grade-sim-controls{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr) minmax(0,1fr);gap:10px}.grade-sim-toggle,.grade-sim-control{border:1px solid var(--border-medium);border-radius:12px;background:var(--bg-tertiary);min-height:62px}.grade-sim-toggle{cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;color:var(--text-secondary);font-size:13px;font-weight:600;padding:0 14px;transition:all .15s ease}.grade-sim-toggle:hover{border-color:var(--border-strong);color:var(--text-primary)}.grade-sim-toggle.active{border-color:#c41e3a80;color:var(--text-primary);background:linear-gradient(180deg,#c41e3a29,#c41e3a14)}.grade-sim-control{padding:8px 10px;display:flex;flex-direction:column;justify-content:center;gap:6px}.grade-sim-control label{display:inline-flex;align-items:center;gap:6px;font-size:11px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.06em;font-weight:700}.grade-sim-control input,.grade-sim-control select,.grade-sim-row input{border:1px solid var(--border-medium);background:var(--bg-secondary);color:var(--text-primary);border-radius:10px;min-height:36px;padding:0 10px;font-size:13px}.grade-sim-control input:focus,.grade-sim-control select:focus,.grade-sim-row input:focus{outline:none;border-color:var(--accent-primary)}.grade-sim-control-inline{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px}.grade-sim-control-inline select{min-width:102px}.grade-sim-metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.grade-sim-metric{border:1px solid var(--border-medium);background:var(--bg-tertiary);border-radius:12px;padding:11px 12px;display:grid;gap:5px}.grade-sim-metric span{color:var(--text-muted);font-size:11px;text-transform:uppercase;letter-spacing:.06em;font-weight:700}.grade-sim-metric strong{color:var(--text-primary);font-size:19px;line-height:1.1}.grade-sim-metric small{color:var(--text-secondary);font-size:12px;line-height:1.4}.grade-sim-insight{border-radius:12px;border:1px solid var(--border-medium);background:#94a3b814;padding:11px 12px;display:grid;grid-template-columns:16px minmax(0,1fr);gap:10px;align-items:flex-start}.grade-sim-insight p{margin:0;color:var(--text-secondary);font-size:13px;line-height:1.5}.grade-sim-insight p+p{margin-top:6px}.grade-sim-insight strong{color:var(--text-primary);font-weight:700}.grade-sim-insight.tone-ahead{border-color:#10b98173;background:#10b9811f}.grade-sim-insight.tone-warn{border-color:#f59e0b80;background:#f59e0b1a}.grade-sim-insight.tone-risk{border-color:#ef444480;background:#ef44441c}.grade-sim-table-head{display:grid;align-items:center;gap:10px;padding:0 10px;min-height:30px}.grade-sim-table-head span{color:var(--text-muted);font-size:11px;text-transform:uppercase;letter-spacing:.08em;font-weight:700}.grade-sim-table-head.weighted,.grade-sim-row.weighted{grid-template-columns:minmax(160px,1.5fr) 124px minmax(76px,.7fr) minmax(76px,.7fr) minmax(82px,.75fr) minmax(150px,1fr) 38px}.grade-sim-table-head.flat,.grade-sim-row.flat{grid-template-columns:minmax(180px,1.7fr) 124px minmax(84px,.8fr) minmax(84px,.8fr) minmax(150px,1fr) 38px}.grade-sim-table-body{display:grid;gap:8px;overflow:auto;padding-right:2px}.grade-sim-row{display:grid;gap:10px;align-items:center;border-radius:12px;border:1px solid var(--border-medium);background:#94a3b80f;padding:8px 10px}.grade-sim-row input[type=text]{font-weight:600}.grade-sim-status-toggle{height:36px;border-radius:10px;border:1px solid var(--border-medium);background:var(--bg-secondary);color:var(--text-secondary);display:inline-flex;align-items:center;justify-content:center;gap:6px;font-size:12px;font-weight:650;cursor:pointer;transition:all .14s ease}.grade-sim-status-toggle:hover{border-color:var(--border-strong);color:var(--text-primary)}.grade-sim-status-toggle.done{border-color:#10b98173;background:#10b98124;color:#a5ffdafa}.grade-sim-delete{width:34px;height:34px;border-radius:10px;border:1px solid rgba(239,68,68,.35);background:#ef44441a;color:#ffa6a6f2;display:inline-flex;align-items:center;justify-content:center;cursor:pointer}.grade-sim-delete:hover{background:#ef44442e}.grade-sim-actions{display:flex;align-items:center;gap:8px}.grade-sim-action-btn{height:36px;border-radius:10px;border:1px solid var(--border-medium);background:var(--bg-tertiary);color:var(--text-secondary);display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:0 12px;font-size:12px;font-weight:650;cursor:pointer}.grade-sim-action-btn:hover{border-color:var(--border-strong);color:var(--text-primary)}.grade-sim-action-btn.muted{margin-left:auto}.grade-sim-action-btn.primary{color:#fff;border-color:#c41e3aa6;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));box-shadow:0 10px 24px #c41e3a3d}.grade-sim-action-btn.primary:hover{border-color:#ffffff57;filter:brightness(1.05)}@media (max-width: 980px){.grade-sim-modal{width:min(760px,96vw);padding:16px;max-height:92vh}.grade-sim-controls{grid-template-columns:1fr}.grade-sim-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}.grade-sim-table-head{display:none}.grade-sim-row.weighted,.grade-sim-row.flat{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.grade-sim-row input[type=text]{grid-column:1 / -1}.grade-sim-status-toggle{grid-column:1 / 2}.grade-sim-delete{justify-self:end}}@media (max-width: 760px){.glass-grade-btn{width:36px;padding:0;justify-content:center}.glass-grade-btn span{display:none}.grade-sim-overlay{padding:10px}.grade-sim-modal{width:100%;max-height:94vh;border-radius:16px;padding:14px}.grade-sim-header h2{font-size:19px}.grade-sim-metrics{grid-template-columns:1fr}.grade-sim-actions{flex-wrap:wrap}.grade-sim-action-btn.muted{margin-left:0}.grade-sim-action-btn{flex:1 1 calc(50% - 4px)}.grade-sim-action-btn.primary{flex-basis:100%}}.header-avatar-btn{width:36px;height:36px;border-radius:50%;background:#ffffff0d;border:1px solid rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;padding:0;overflow:hidden;cursor:pointer;transition:all .2s ease;flex-shrink:0}.header-avatar-btn:hover{border-color:#fff3;transform:scale(1.05)}.header-avatar-btn:active{transform:scale(.93)}.header-avatar-btn:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px}.header-avatar-btn img{width:100%;height:100%;object-fit:cover}.header-avatar-btn span{font-size:12px;font-weight:800;color:#fff;letter-spacing:-.5px}.materials-section{display:flex;flex-direction:column;background:var(--bg-secondary);border-radius:12px;border:1px solid var(--border-subtle);flex:1;min-height:0;overflow:hidden}.materials-section .section-header{padding:14px 16px;border-bottom:1px solid var(--border-subtle);flex-shrink:0}.materials-content{flex:1;overflow-y:auto;padding:12px}.pdf-list{display:flex;flex-direction:column;gap:6px}.left-sidebar{display:flex;flex-direction:column;height:100%;overflow:hidden}.course-header-section{flex-shrink:0}.circular-timer-section{padding:24px 16px;display:flex;flex-direction:column;align-items:center;gap:20px;background:linear-gradient(180deg,rgba(196,30,58,.05),transparent);border-top:1px solid var(--border-subtle)}.circular-timer{position:relative;width:160px;height:160px}.timer-ring{width:100%;height:100%}.timer-ring-bg{stroke:var(--bg-elevated)}.timer-ring-progress{stroke:url(#timerGradient);transition:stroke-dasharray 1s linear}.timer-ring-progress{stroke:var(--accent-primary)}.timer-center{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center}.timer-time-big{font-size:32px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--text-primary);letter-spacing:-1px}.timer-label{font-size:12px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:1px}.timer-controls{display:flex;align-items:center;gap:12px}.timer-control-btn{display:flex;align-items:center;gap:8px;padding:10px 24px;background:linear-gradient(135deg,#c41e3a,#059669);border:none;border-radius:24px;color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:all .2s}.timer-control-btn:hover{transform:scale(1.05);box-shadow:0 4px 16px #10b98166}.timer-control-btn.active{background:linear-gradient(135deg,#f59e0b,#d97706)}.timer-control-btn.active:hover{box-shadow:0 4px 16px #f59e0b66}.timer-reset-btn{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border:1px solid var(--border-medium);border-radius:50%;color:var(--text-secondary);cursor:pointer;transition:all .15s}.timer-reset-btn:hover{background:var(--bg-elevated);color:var(--text-primary)}.timer-presets{display:flex;gap:6px;margin-bottom:12px;justify-content:center}.timer-preset-btn{padding:6px 12px;background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:8px;color:var(--text-muted);font-size:12px;font-weight:600;cursor:pointer;transition:all .15s}.timer-preset-btn:hover{background:var(--bg-tertiary);border-color:var(--border-medium)}.timer-preset-btn.active{background:#c41e3a26;border-color:var(--accent-primary);color:var(--accent-primary)}.timer-complete-btn{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#c41e3a,#059669);border:none;border-radius:50%;color:#fff;cursor:pointer;transition:all .15s;box-shadow:0 2px 8px #10b9814d}.timer-complete-btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px #10b98166}.annotation-toolbar{display:flex;align-items:center;gap:8px;padding:10px 16px;background:var(--bg-secondary);border-bottom:1px solid var(--border-subtle);position:sticky;top:0;z-index:50;flex-wrap:wrap}.annotation-hint{display:flex;align-items:center;gap:8px;padding:8px 16px;border-bottom:1px solid var(--border-subtle);background:linear-gradient(135deg,#94a3b81a,#94a3b808);color:var(--text-secondary);font-size:12px;font-weight:500}.toolbar-group{display:flex;align-items:center;gap:4px}.toolbar-divider{width:1px;height:24px;background:var(--border-medium);margin:0 8px}.toolbar-spacer{flex:1}.tool-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:transparent;border:1px solid var(--border-subtle);border-radius:12px;color:var(--text-secondary);cursor:pointer;transition:border-color .15s ease,background .15s ease,color .15s ease,transform .15s ease;font-size:14px}.tool-btn:hover{background:#ffffff0a;border-color:#ffffff1f;color:var(--text-primary)}.tool-btn.active{background:#94a3b81f;border-color:#94a3b847;color:var(--text-primary);box-shadow:inset 0 0 0 1px #94a3b814}.tool-btn:disabled{opacity:.3;cursor:not-allowed}.tool-btn.danger:hover{background:#ef44441a;color:#ef4444}.zoom-level{font-size:12px;font-weight:600;color:var(--text-muted);min-width:45px;text-align:center}.color-group{position:relative}.color-btn{position:relative;width:36px;height:36px;border-radius:12px;border:1px solid var(--border-subtle);background:#ffffff08;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#fffffff5;overflow:hidden;transition:border-color .15s ease,background .15s ease,transform .15s ease}.color-btn:after{content:"";position:absolute;top:9px;right:9px;bottom:9px;left:9px;border-radius:999px;background:var(--swatch-color, rgba(148, 163, 184, .7));box-shadow:inset 0 0 0 1px #ffffff2e}.color-btn svg{position:relative;z-index:1}.color-btn:hover{border-color:#ffffff24;background:#ffffff0d}.color-picker{position:absolute;top:100%;left:0;margin-top:8px;display:flex;gap:8px;padding:10px;background:var(--bg-elevated);border:1px solid var(--border-medium);border-radius:14px;box-shadow:0 8px 24px #0000004d;z-index:100}.color-option{width:28px;height:28px;border-radius:10px;border:1px solid rgba(255,255,255,.12);background:var(--swatch-color, rgba(148, 163, 184, .7));cursor:pointer;transition:transform .15s ease,border-color .15s ease,box-shadow .15s ease}.color-option:hover{transform:scale(1.08)}.color-option.active{border-color:#ffffffd1;box-shadow:0 0 0 2px #94a3b82e}.pdf-content{flex:1;overflow:auto;display:flex;justify-content:center;padding:20px;background:var(--bg-tertiary)}.pdf-page-container{position:relative;display:inline-block;-webkit-user-select:none;user-select:none}.annotation-overlay{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none}.annotation-layer{position:absolute;top:0;left:0;pointer-events:all}.annotation-item{transition:opacity .15s}.annotation-item:hover{opacity:.8}.annotation-item.selected{filter:drop-shadow(0 0 4px rgba(196,30,58,.8))}.note-input-popup{position:absolute;z-index:100;background:var(--bg-elevated);border:1px solid var(--border-medium);border-radius:12px;padding:12px;box-shadow:0 8px 32px #0006;min-width:250px}.note-input-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;gap:10px}.note-input-header strong{font-size:12px;letter-spacing:.02em;color:var(--text-primary)}.note-input-header span{font-size:11px;color:var(--text-muted)}.note-input-popup textarea{width:100%;min-height:80px;padding:10px;background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:8px;color:var(--text-primary);font-size:13px;resize:vertical}.note-input-popup textarea:focus{outline:none;border-color:var(--accent-primary)}.inline-text-editor{position:absolute;z-index:100;min-width:220px;max-width:min(320px,calc(100vw - 32px));pointer-events:all}.inline-text-editor input{width:100%;border:none;border-bottom:2px solid rgba(196,30,58,.42);background:#080a0ed1;color:var(--text-primary);font-size:14px;font-weight:500;padding:6px 2px 7px;border-radius:0}.inline-text-editor input:focus{outline:none;border-bottom-color:#c41e3abf}.note-input-actions{display:flex;gap:8px;margin-top:10px;justify-content:flex-end}.note-input-actions button{padding:6px 14px;border-radius:6px;border:none;font-size:12px;font-weight:600;cursor:pointer;transition:all .15s}.note-input-actions button:not(.primary):not(.delete-action){background:transparent;color:var(--text-secondary)}.note-input-actions button:not(.primary):not(.delete-action):hover{background:var(--bg-tertiary)}.note-input-actions button.primary{background:var(--accent-primary);color:#fff}.note-input-actions button.primary:hover{background:var(--accent-primary-hover)}.note-input-actions .delete-action{margin-right:auto;background:#ef444424;color:#ef4444}.note-input-actions .delete-action:hover{background:#ef44443d}.notes-sidebar{position:absolute;right:16px;top:80px;width:240px;max-height:calc(100% - 160px);overflow-y:auto;background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:12px;padding:14px;z-index:40}.notes-sidebar-header{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:12px}.notes-sidebar h4{font-size:13px;font-weight:600;margin:0;color:var(--text-secondary)}.notes-sidebar-add{border:1px solid var(--border-subtle);background:var(--bg-tertiary);color:var(--text-secondary);border-radius:8px;font-size:11px;font-weight:700;padding:5px 10px;cursor:pointer;transition:all .15s ease}.notes-sidebar-add:hover{border-color:#c41e3a66;color:var(--accent-primary);background:#c41e3a1a}.note-card{position:relative;padding:10px 12px;background:var(--bg-tertiary);border-left:3px solid;border-radius:0 8px 8px 0;margin-bottom:8px;cursor:pointer;transition:background .15s ease,border-color .15s ease}.note-card.active{background:#c41e3a24;border-color:#c41e3a73}.note-order{display:inline-flex;align-items:center;justify-content:center;min-width:26px;height:18px;padding:0 6px;border-radius:999px;background:#ffffff14;color:var(--text-muted);font-size:10px;font-weight:700;margin-bottom:6px}.note-card p{font-size:12px;color:var(--text-secondary);margin:0;line-height:1.5}.note-delete{position:absolute;top:6px;right:6px;width:20px;height:20px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;border-radius:4px;color:var(--text-muted);cursor:pointer;opacity:0;transition:all .15s}.note-card:hover .note-delete{opacity:1}.note-delete:hover{background:#ef44441a;color:#ef4444}@media (max-width: 1200px){.notes-sidebar{position:static;width:min(100%,760px);max-height:220px;margin:12px auto 0;border-radius:14px}.note-postit-popup{min-width:min(300px,calc(100vw - 32px))}.inline-text-editor{min-width:min(220px,calc(100vw - 32px))}}.pdf-viewer{flex:1;display:flex;flex-direction:column;background:var(--bg-primary);overflow:hidden;position:relative}.pdf-nav{display:flex;align-items:center;justify-content:center;gap:16px;padding:12px;background:var(--bg-secondary);border-top:1px solid var(--border-subtle)}.nav-btn{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:10px;color:var(--text-secondary);cursor:pointer;transition:all .15s}.nav-btn:hover:not(:disabled){background:var(--accent-primary);border-color:var(--accent-primary);color:#fff}.nav-btn:disabled{opacity:.3;cursor:not-allowed}.page-info{display:flex;align-items:center;gap:6px;font-size:14px}.current-page{font-weight:700;color:var(--text-primary)}.page-separator,.total-pages{color:var(--text-muted)}.pdf-viewer-empty{flex:1;display:flex;align-items:center;justify-content:center;background:var(--bg-primary)}.pdf-reupload-btn{margin-top:16px;display:inline-flex;align-items:center;gap:10px;padding:10px 16px;border-radius:14px;background:linear-gradient(135deg,#d6404540,#a334382e);border:1px solid rgba(214,64,69,.35);color:#ffffffeb;font-weight:800;letter-spacing:-.2px;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease;box-shadow:0 14px 40px #d640451f}.pdf-reupload-btn:hover{transform:translateY(-1px);border-color:#d640458c;box-shadow:0 18px 52px #d640452e}.pdf-reupload-btn:active{transform:translateY(0)}.pdf-loading{padding:40px;color:var(--text-muted);font-size:14px;animation:fadeIn .3s ease both}.notes-panel{display:flex;flex-direction:column;height:100%;background:var(--bg-secondary)}.notes-panel-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--border-subtle)}.notes-header-title{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--text-primary)}.quick-bookmark-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:8px;color:var(--text-muted);cursor:pointer;transition:all .15s}.quick-bookmark-btn:hover{background:var(--bg-elevated);border-color:var(--accent-gold);color:var(--accent-gold)}.quick-bookmark-btn:active{transform:scale(.9)}.quick-bookmark-btn.active{background:linear-gradient(135deg,#fbbf2433,#fbbf241a);border-color:var(--accent-gold);color:var(--accent-gold)}.add-bookmark-form{display:flex;align-items:center;gap:8px;padding:12px 16px;background:var(--bg-tertiary);border-bottom:1px solid var(--border-subtle)}.add-bookmark-form input{flex:1;padding:8px 12px;background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:6px;color:var(--text-primary);font-size:13px;font-family:inherit}.add-bookmark-form input:focus{outline:none;border-color:var(--accent-primary)}.add-bookmark-actions{display:flex;gap:4px}.add-bookmark-actions button{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:6px;color:var(--text-muted);cursor:pointer;transition:all .15s}.add-bookmark-actions .confirm-btn:hover{background:var(--accent-secondary);border-color:var(--accent-secondary);color:#fff}.add-bookmark-actions .cancel-btn:hover{background:#ef444433;border-color:#ef4444;color:#ef4444}.notes-filter-tabs{display:flex;padding:8px;gap:4px;border-bottom:1px solid var(--border-subtle)}.filter-tab{flex:1;display:flex;align-items:center;justify-content:center;gap:4px;padding:8px 12px;background:transparent;border:none;border-radius:6px;color:var(--text-muted);font-size:12px;font-weight:500;font-family:inherit;cursor:pointer;transition:all .15s}.filter-tab:hover{background:var(--bg-tertiary);color:var(--text-secondary)}.filter-tab.active{background:var(--bg-tertiary);color:var(--accent-primary)}.filter-count{padding:2px 6px;background:var(--bg-elevated);border-radius:10px;font-size:10px;font-weight:600}.filter-tab.active .filter-count{background:#c41e3a33;color:var(--accent-primary)}.notes-content{flex:1;overflow-y:auto;padding:12px}.notes-empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 20px;text-align:center}.notes-empty-state .empty-icon{font-size:48px;margin-bottom:12px;opacity:.5}.notes-empty-state p{font-size:13px;color:var(--text-muted);line-height:1.5}.notes-section{margin-bottom:20px}.section-header{display:flex;align-items:center;gap:6px;padding:8px 0;font-size:11px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}.section-count{margin-left:auto;padding:2px 6px;background:var(--bg-tertiary);border-radius:10px;font-size:10px}.bookmarks-list,.notes-list{display:flex;flex-direction:column;gap:6px}.bookmark-item{display:flex;align-items:center;background:var(--bg-tertiary);border-radius:8px;overflow:hidden;transition:all .15s}.bookmark-item:hover{background:var(--bg-elevated)}.bookmark-item.current{background:linear-gradient(135deg,#fbbf2426,#fbbf240d);border:1px solid rgba(251,191,36,.3)}.bookmark-content{flex:1;display:flex;align-items:center;gap:10px;padding:10px 12px;cursor:pointer}.bookmark-icon{color:var(--accent-gold);flex-shrink:0}.bookmark-label{flex:1;font-size:13px;font-weight:500;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.bookmark-page{font-size:11px;color:var(--text-muted);padding:2px 6px;background:var(--bg-elevated);border-radius:4px}.bookmark-arrow{color:var(--text-muted);opacity:0;transition:opacity .15s}.bookmark-item:hover .bookmark-arrow{opacity:1}.bookmark-actions{display:flex;gap:2px;padding-right:8px;opacity:0;transition:opacity .15s}.bookmark-item:hover .bookmark-actions{opacity:1}.bookmark-actions button,.note-item .delete-btn{width:28px;height:28px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;border-radius:6px;color:var(--text-muted);cursor:pointer;transition:all .15s}.bookmark-actions .edit-btn:hover{background:#c41e3a33;color:var(--accent-primary)}.bookmark-actions .delete-btn:hover,.note-item .delete-btn:hover{background:#ef444433;color:#ef4444}.bookmark-edit{display:flex;align-items:center;gap:4px;padding:6px;flex:1}.bookmark-edit input{flex:1;padding:6px 10px;background:var(--bg-elevated);border:1px solid var(--accent-primary);border-radius:4px;color:var(--text-primary);font-size:13px;font-family:inherit}.bookmark-edit button{width:28px;height:28px;display:flex;align-items:center;justify-content:center;background:var(--bg-elevated);border:none;border-radius:4px;color:var(--text-muted);cursor:pointer}.note-item{display:flex;align-items:stretch;background:var(--bg-tertiary);border-radius:8px;overflow:hidden;transition:all .15s}.note-item:hover{background:var(--bg-elevated)}.note-item.current{border:1px solid rgba(196,30,58,.3)}.note-content{flex:1;display:flex;align-items:center;gap:10px;padding:10px;cursor:pointer}.note-color-bar{width:4px;align-self:stretch;border-radius:2px;flex-shrink:0}.note-body{flex:1;min-width:0}.note-text{font-size:13px;color:var(--text-primary);line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.note-page{font-size:11px;color:var(--text-muted);margin-top:4px}.note-arrow{color:var(--text-muted);opacity:0;flex-shrink:0;transition:opacity .15s}.note-item:hover .note-arrow{opacity:1}.note-item .delete-btn{opacity:0;margin:auto 8px auto 0}.note-item:hover .delete-btn{opacity:1}.notes-footer{padding:10px 16px;border-top:1px solid var(--border-subtle);background:var(--bg-tertiary)}.current-page-label{font-size:11px;color:var(--text-muted)}.pdf-pages-container{display:flex;flex-direction:column;align-items:center;gap:24px;padding:24px}.pdf-page-wrapper{position:relative;border-radius:8px;overflow:hidden;box-shadow:0 4px 20px #0000004d;transition:all .2s}.pdf-page-wrapper.active{box-shadow:0 4px 30px #c41e3a4d;outline:2px solid var(--accent-primary)}.pdf-page-number{position:absolute;top:8px;left:8px;padding:4px 10px;background:#000000b3;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:6px;font-size:11px;font-weight:600;color:#fff;z-index:10;opacity:.7;transition:opacity .2s}.pdf-page-wrapper:hover .pdf-page-number{opacity:1}.pdf-page-wrapper .pdf-page-container{position:relative}.pdf-content{flex:1;overflow-y:auto;overflow-x:hidden;background:var(--bg-primary)}.claude-notes-container{display:flex;flex-direction:column;height:100%;background:#ffffff08;border:1px solid var(--border-subtle);border-radius:16px;overflow:hidden}.claude-notes-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--border-subtle);background:#0000001f}.claude-notes-title{display:flex;align-items:center;gap:8px;color:var(--text-secondary);font-weight:700}.claude-notes-title svg{color:var(--text-muted)}.claude-notes-title .doc-name{font-size:13px;font-weight:800;color:var(--text-primary);max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.claude-notes-actions{display:flex;align-items:center;gap:8px}.mode-toggle{display:flex;align-items:center;justify-content:center;width:30px;height:30px;background:#ffffff0a;border:1px solid var(--border-subtle);border-radius:10px;color:var(--text-secondary);cursor:pointer;transition:all .15s}.mode-toggle:hover{background:#ffffff14;border-color:var(--border-medium);color:var(--text-primary)}.mode-toggle.active{background:radial-gradient(260px 100px at 50% 10%,#c41e3a2e,#ffffff0f);border-color:#ffffff2e;color:var(--text-primary)}.claude-notes-status{display:flex;align-items:center;gap:4px;font-size:11px;color:var(--text-muted);margin-left:8px}.claude-notes-status .status-icon.saved{color:#c41e3a}.claude-notes-status .typing{color:var(--accent-primary)}.claude-notes-editor{flex:1;display:flex;overflow:hidden}.claude-textarea{flex:1;width:100%;padding:20px 24px;background:transparent;border:none;color:var(--text-primary);font-family:var(--font-family);font-size:14px;line-height:1.7;resize:none;outline:none}.claude-textarea::placeholder{color:var(--text-muted);font-style:normal}.claude-textarea:focus{outline:none}.claude-preview{flex:1;padding:20px 24px;background:transparent;color:var(--text-primary);font-family:var(--font-family);font-size:14px;line-height:1.7;overflow-y:auto}.claude-preview>*:first-child{margin-top:0}.claude-preview h1,.claude-preview h2,.claude-preview h3,.claude-preview h4{color:#fff;font-weight:600;margin:1.2em 0 .4em;line-height:1.4}.claude-preview h1{font-size:1.4em}.claude-preview h2{font-size:1.2em;display:flex;align-items:center;gap:8px}.claude-preview h3{font-size:1.05em;display:flex;align-items:center;gap:6px}.claude-preview h4{font-size:1em;color:#e5e5e5}.claude-preview p{margin:.6em 0;color:#e5e5e5;line-height:1.6}.claude-preview strong{color:#fff;font-weight:600}.claude-preview em{font-style:italic;color:#d4d4d4}.claude-preview ul,.claude-preview ol{margin:.6em 0;padding-left:1.5em}.claude-preview li{margin:.3em 0;color:#e5e5e5;line-height:1.6}.claude-preview li::marker{color:#a3a3a3}.claude-preview ul>li::marker{content:"•  ";color:#a3a3a3}.claude-preview ul ul,.claude-preview ol ol,.claude-preview ul ol,.claude-preview ol ul{margin:.3em 0}.claude-preview table{width:100%;border-collapse:collapse;margin:1em 0;font-size:14px;table-layout:fixed}.claude-preview th,.claude-preview td{padding:8px 12px;text-align:left;border-bottom:1px solid #3a3a3a;vertical-align:top;word-wrap:break-word}.claude-preview th{color:#8b8b8b;font-weight:600;font-size:13px;padding-bottom:10px}.claude-preview tr:last-child td{border-bottom:none}.claude-preview td:first-child{color:#fff;font-weight:600;white-space:nowrap}.claude-preview td:not(:first-child){color:#d4d4d4}.claude-preview tr:hover td{background:#ffffff05}.claude-preview code{background:#1a1a1a;color:#e5e5e5;padding:3px 8px;border-radius:4px;font-family:JetBrains Mono,Fira Code,SF Mono,Consolas,monospace;font-size:.9em}.claude-preview pre{background:#1a1a1a;padding:16px 20px;border-radius:8px;overflow-x:auto;margin:1em 0;border:1px solid #333333}.claude-preview pre code{background:transparent;padding:0;font-size:13px;line-height:1.6}.claude-preview blockquote{border-left:3px solid var(--accent-primary);margin:1em 0;color:#a3a3a3;font-style:italic;background:#c41e3a0d;padding:12px 16px;border-radius:0 8px 8px 0}.claude-preview hr{border:none;border-top:1px solid #404040;margin:1.5em 0}.claude-preview a{color:var(--accent-primary);text-decoration:none}.claude-preview a:hover{text-decoration:underline}.claude-preview .katex{font-size:1.1em;color:#e5e5e5}.claude-preview .katex-display{margin:1em 0;padding:16px;background:#1a1a1a;border-radius:8px;overflow-x:auto}.preview-empty{color:#6b6b6b;font-style:italic}.claude-notes-footer{display:flex;align-items:center;justify-content:space-between;padding:8px 16px;border-top:1px solid var(--border-subtle);background:#0000001f}.claude-notes-footer .word-count,.claude-notes-footer .mode-hint{font-size:11px;color:#6b6b6b;font-weight:500}.claude-notes-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;padding:40px;text-align:center;background:transparent}.claude-notes-empty .empty-icon{font-size:48px;margin-bottom:16px}.claude-notes-empty h3{font-size:16px;font-weight:600;color:#e5e5e5;margin-bottom:8px}.claude-notes-empty p{font-size:14px;color:#a3a3a3;line-height:1.5}.ks-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1100;background:#0000008c;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;padding:16px}.ks-modal{width:min(520px,100%);background:var(--bg-elevated, #141416);border:1px solid var(--border-subtle);border-radius:16px;box-shadow:0 24px 60px #00000080;display:flex;flex-direction:column;max-height:80vh;overflow:hidden}.ks-header{display:flex;align-items:center;gap:8px;padding:16px 20px 12px;border-bottom:1px solid var(--border-subtle);flex-shrink:0}.ks-title{flex:1;margin:0;font-size:15px;font-weight:700;color:var(--text-primary)}.ks-close{background:none;border:none;cursor:pointer;color:var(--text-muted);padding:4px;border-radius:6px;display:flex;align-items:center;justify-content:center;transition:color .15s}.ks-close:hover{color:var(--text-primary)}.ks-body{overflow-y:auto;padding:16px 20px 20px;display:flex;flex-direction:column;gap:20px}.ks-group-title{margin:0 0 8px;font-size:11px;font-weight:600;letter-spacing:.8px;text-transform:uppercase;color:var(--text-muted)}.ks-list{display:flex;flex-direction:column;gap:4px}.ks-row{display:flex;align-items:center;justify-content:space-between;padding:6px 10px;border-radius:8px;background:var(--bg-secondary)}.ks-desc{font-size:13px;color:var(--text-primary)}.ks-keys{display:flex;align-items:center;gap:4px}.ks-key{display:inline-flex;align-items:center;justify-content:center;min-width:26px;height:22px;padding:0 6px;border:1px solid var(--border-subtle);border-radius:5px;font-size:11px;font-weight:600;font-family:JetBrains Mono,monospace;color:var(--text-secondary);background:var(--bg-primary)}.ks-plus{font-size:11px;color:var(--text-muted)}.pwa-banner{display:flex;align-items:center;gap:10px;padding:8px 16px;background:linear-gradient(135deg,#6366f12e,#3b82f61f);border-bottom:1px solid rgba(99,102,241,.25);font-size:13px}.pwa-banner-text{flex:1;color:var(--text-secondary)}.pwa-banner-install{display:inline-flex;align-items:center;gap:5px;padding:5px 12px;border-radius:8px;background:var(--accent-primary);color:#fff;border:none;font-size:12px;font-weight:600;cursor:pointer;transition:opacity .15s}.pwa-banner-install:hover{opacity:.85}.pwa-banner-dismiss{background:none;border:none;cursor:pointer;color:var(--text-muted);padding:4px;border-radius:6px;display:flex;align-items:center;justify-content:center;transition:color .15s}.pwa-banner-dismiss:hover{color:var(--text-primary)}:root{--np-gray: #888;--np-blue: #4a90d9;--np-green: #3a9e6a;--np-purple: #8b5cf6}.np-shell{display:flex;flex-direction:column;flex:1 1 auto;height:100%;min-height:0;overflow:hidden;position:relative}.np-header{flex-shrink:0;display:flex;align-items:center;gap:8px;padding:10px 12px;border-bottom:1px solid var(--border-subtle)}.np-file-label{font-size:10px;font-weight:700;letter-spacing:.08em;color:var(--text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex-shrink:1;min-width:0}.np-page-pill{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid rgba(255,255,255,.12);background:#ffffff0d;color:var(--text-secondary);font-size:11px;font-weight:600;padding:2px 10px;border-radius:12px;cursor:pointer;white-space:nowrap;transition:background .15s,border-color .15s}.np-page-pill:hover{background:#ffffff1a;border-color:#fff3}.np-header-actions{margin-left:auto;display:flex;align-items:center;gap:2px;flex-shrink:0}.np-icon-btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:7px;border:1px solid transparent;background:transparent;color:var(--text-muted);cursor:pointer;transition:background .12s,color .12s;flex-shrink:0}.np-icon-btn:hover{background:#ffffff12;color:var(--text-primary)}.np-icon-btn.is-on{background:#ffffff1a;color:var(--text-primary);border-color:#ffffff26}.np-icon-btn.np-delete:hover{color:#f87171e6}.np-icon-btn.np-add-quick{color:var(--np-blue)}.np-icon-btn.np-add-quick:hover{background:#4a90d91f}.np-search{display:flex;align-items:center;gap:6px;padding:6px 12px;border-bottom:1px solid var(--border-subtle)}.np-search-icon{color:var(--text-muted);flex-shrink:0}.np-search-input{flex:1;-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;outline:none;background:transparent;color:var(--text-primary);font-size:13px;padding:4px 0}.np-search-input::placeholder{color:var(--text-muted)}.np-tree{border-bottom:1px solid var(--border-subtle);padding:8px 0;max-height:200px;overflow-y:auto}.np-tree-head{display:flex;align-items:center;justify-content:space-between;padding:0 12px 6px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted)}.np-tree-add{display:flex;align-items:center;gap:4px}.np-tree-input{width:90px;-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid rgba(255,255,255,.1);border-radius:5px;background:#ffffff0a;color:var(--text-primary);font-size:11px;padding:3px 7px;outline:none}.np-tree-input:focus{border-color:#ffffff40}.np-tree-item{-webkit-appearance:none;-moz-appearance:none;appearance:none;display:flex;align-items:center;gap:6px;width:100%;padding:5px 12px;border:none;background:transparent;color:var(--text-secondary);font-size:12.5px;cursor:pointer;text-align:left;transition:background .1s}.np-tree-item:hover{background:#ffffff0a}.np-tree-item.is-active{background:#ffffff12;color:var(--text-primary);font-weight:600}.np-tree-row{display:flex;align-items:center}.np-tree-row .np-icon-btn{width:24px;height:24px;margin-right:4px}.np-tree-count{margin-left:auto;font-size:10px;color:var(--text-muted)}.np-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}.np-list{flex:1;min-height:0;overflow-y:auto;padding:8px 10px 16px}.np-list::-webkit-scrollbar{width:5px}.np-list::-webkit-scrollbar-thumb{border-radius:999px;background:#ffffff14}.np-list-badge{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);padding:0 4px 8px}.np-loading,.np-no-notes{font-size:12.5px;color:var(--text-muted);padding:12px 4px;text-align:center}.np-card{border:1px solid rgba(255,255,255,.08);border-radius:8px;background:#ffffff05;margin-bottom:8px;transition:border-color .15s,box-shadow .15s}.np-card:hover{border-color:#ffffff24;box-shadow:0 2px 8px #0000001f}.np-card-head{display:flex;align-items:center;gap:6px;padding:7px 10px 0}.np-badge{font-size:9.5px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:#fff;padding:1px 7px;border-radius:4px}.np-card-time{display:flex;align-items:center;gap:3px;font-size:10px;color:var(--text-muted)}.np-card-head .np-delete{margin-left:auto;width:22px;height:22px;opacity:0;transition:opacity .15s}.np-card:hover .np-card-head .np-delete{opacity:1}.np-card-body{display:block;width:100%;border:none;outline:none;resize:none;background:transparent;color:var(--text-primary);font-family:SF Mono,JetBrains Mono,ui-monospace,monospace;font-size:13px;line-height:1.7;padding:8px 10px 10px;overflow:hidden}.np-card-body::placeholder{color:var(--text-muted);font-family:var(--font-family)}.np-card-foot{padding:0 10px 8px}.np-card{cursor:grab}.np-card:active{cursor:grabbing}.np-card.is-dragging{opacity:.55;transform:scale(.985)}.np-card-body{cursor:text}.np-tree-item.is-drop-target,.np-tree-row.is-drop-target{background:#8cb4ff24;outline:1px dashed rgba(140,180,255,.55);outline-offset:-1px;border-radius:6px}html.light-mode .np-tree-item.is-drop-target,html.light-mode .np-tree-row.is-drop-target{background:#285ac81a;outline-color:#285ac873}.np-folder-select{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid rgba(255,255,255,.1);border-radius:5px;background:#ffffff0a;color:var(--text-secondary);font-size:11px;padding:3px 8px;cursor:pointer;outline:none}.np-folder-select:focus{border-color:#ffffff40}.np-add-bar{flex-shrink:0;padding:8px 12px;border-top:1px solid var(--border-subtle);position:relative}.np-add-btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;display:flex;align-items:center;gap:6px;width:100%;padding:8px 12px;border:1px dashed rgba(255,255,255,.14);border-radius:8px;background:#ffffff05;color:var(--text-secondary);font-size:13px;font-weight:600;cursor:pointer;transition:background .15s,border-color .15s}.np-add-btn:hover{background:#ffffff0f;border-color:#ffffff38}.np-chevron{transition:transform .2s;margin-left:auto}.np-chevron.is-open{transform:rotate(180deg)}.np-template-picker{position:absolute;bottom:100%;left:12px;right:12px;background:var(--bg-secondary, #1e1e2e);border:1px solid rgba(255,255,255,.12);border-radius:10px;padding:4px;box-shadow:0 -4px 20px #0000004d;z-index:10}.np-template-opt{-webkit-appearance:none;-moz-appearance:none;appearance:none;display:flex;align-items:center;gap:8px;width:100%;padding:8px 10px;border:none;border-radius:7px;background:transparent;color:var(--text-primary);font-size:13px;cursor:pointer;text-align:left;transition:background .1s}.np-template-opt:hover{background:#ffffff12}.np-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-align:center;color:var(--text-muted);opacity:.6}.np-empty-title{margin:0;font-size:14px;font-weight:600;color:var(--text-secondary)}.np-empty-sub{margin:0;font-size:12px;color:var(--text-muted);line-height:1.5;max-width:24ch}html.light-mode .np-header{border-bottom-color:#0000000f}html.light-mode .np-file-label{color:var(--light-ink-muted)}html.light-mode .np-page-pill{border-color:#0000001f;background:#00000008;color:var(--light-ink-secondary)}html.light-mode .np-page-pill:hover{background:#0000000f}html.light-mode .np-icon-btn{color:var(--light-ink-muted)}html.light-mode .np-icon-btn:hover{background:#0000000d;color:var(--light-ink)}html.light-mode .np-icon-btn.is-on{background:#00000012;color:var(--light-ink);border-color:#0000001f}html.light-mode .np-search{border-bottom-color:#0000000f}html.light-mode .np-search-input{color:var(--light-ink)}html.light-mode .np-tree{border-bottom-color:#0000000f}html.light-mode .np-tree-head{color:var(--light-ink-muted)}html.light-mode .np-tree-input{border-color:#0000001f;background:#00000005;color:var(--light-ink)}html.light-mode .np-tree-item{color:var(--light-ink-secondary)}html.light-mode .np-tree-item:hover{background:#00000008}html.light-mode .np-tree-item.is-active{background:#0000000f;color:var(--light-ink)}html.light-mode .np-card{border-color:#00000014;background:#00000003}html.light-mode .np-card:hover{border-color:#00000024;box-shadow:0 2px 8px #0000000f}html.light-mode .np-card-body{color:var(--light-ink)}html.light-mode .np-card-time{color:var(--light-ink-muted)}html.light-mode .np-folder-select{border-color:#0000001a;background:#00000005;color:var(--light-ink-secondary)}html.light-mode .np-add-bar{border-top-color:#0000000f}html.light-mode .np-add-btn{border-color:#0000001f;background:#00000003;color:var(--light-ink-secondary)}html.light-mode .np-add-btn:hover{background:#0000000a}html.light-mode .np-template-picker{background:#fff;border-color:#0000001a;box-shadow:0 -4px 20px #00000014}html.light-mode .np-template-opt{color:var(--light-ink)}html.light-mode .np-template-opt:hover{background:#0000000a}html.light-mode .np-empty-title{color:var(--light-ink-secondary)}html.light-mode .np-empty-sub{color:var(--light-ink-muted)}.postit-card{position:absolute;border-radius:3px;border:1.5px solid;box-shadow:2px 3px 8px #00000026;font-size:13px;min-width:120px;z-index:4;transition:box-shadow .15s,transform .15s;cursor:default}.postit-card.is-selected{box-shadow:2px 3px 12px #00000040,0 0 0 2px var(--postit-border)}.postit-card.is-dragging{opacity:.85;cursor:grabbing;z-index:10}.postit-card.is-minimized{min-height:0}.postit-header{display:flex;align-items:center;justify-content:space-between;padding:3px 4px 3px 6px;border-radius:2px 2px 0 0;color:#fff;cursor:grab;-webkit-user-select:none;user-select:none}.postit-card.is-dragging .postit-header{cursor:grabbing}.postit-actions{display:flex;align-items:center;gap:1px}.postit-action-btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:4px;border:none;background:transparent;color:#ffffffbf;cursor:pointer;transition:background .1s,color .1s}.postit-action-btn:hover{background:#fff3;color:#fff}.postit-action-delete:hover{background:#ff000040;color:#fff}.postit-color-dot{display:block;width:10px;height:10px;border-radius:50%}.postit-color-picker{display:flex;gap:4px;padding:6px 8px;background:#0000000f;border-bottom:1px solid rgba(0,0,0,.08)}.postit-color-swatch{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;border:2px solid transparent;cursor:pointer;transition:transform .1s}.postit-color-swatch:hover{transform:scale(1.15)}.postit-color-swatch.is-active{border-width:2.5px;transform:scale(1.1)}.postit-text{display:block;width:100%;border:none;outline:none;resize:none;background:transparent;font-family:var(--font-family);font-size:12.5px;line-height:1.55;padding:6px 8px 8px;cursor:text}.postit-text::placeholder{opacity:.5}.postit-fold{position:absolute;top:0;right:0;width:0;height:0;border-style:solid;border-width:14px 14px 0 0;border-right-color:var(--bg, #0f0f1a);pointer-events:none}html.light-mode .postit-fold{border-right-color:var(--light-bg, #f8f9fb)}.celebration-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000c;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:10000;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.confetti-container{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;overflow:hidden}.confetti-particle{position:absolute;top:-20px;border-radius:2px;animation:confettiFall 3s ease-out forwards}@keyframes confettiFall{0%{transform:translateY(0) rotate(0);opacity:1}to{transform:translateY(100vh) rotate(720deg);opacity:0}}.celebration-card{background:linear-gradient(135deg,#1e1e28f2,#14141efa);border:1px solid rgba(196,30,58,.3);border-radius:24px;padding:40px;text-align:center;max-width:400px;width:90%;transform:scale(.8) translateY(20px);opacity:0;transition:all .4s cubic-bezier(.34,1.56,.64,1);box-shadow:0 25px 50px #00000080,0 0 100px #c41e3a33}.celebration-card.visible{transform:scale(1) translateY(0);opacity:1}.celebration-icon{width:80px;height:80px;margin:0 auto 20px;background:linear-gradient(135deg,var(--accent-primary),#9a1830);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;animation:pulse 2s ease-in-out infinite;box-shadow:0 0 40px #22c55e66}@keyframes pulse{0%,to{transform:scale(1);box-shadow:0 0 40px #22c55e66}50%{transform:scale(1.05);box-shadow:0 0 60px #22c55e99}}.celebration-title{font-size:28px;font-weight:700;color:#fff;margin:0 0 8px}.celebration-course{font-size:14px;color:var(--text-muted);margin:0 0 24px}.celebration-stats{display:flex;justify-content:center;gap:32px;margin-bottom:24px}.celebration-stat{display:flex;align-items:center;gap:8px}.celebration-stat .stat-icon{opacity:.8}.celebration-stat .stat-icon.xp{color:#fbbf24}.celebration-stat .stat-icon.time{color:var(--accent-primary)}.celebration-stat .stat-value{font-size:18px;font-weight:600;color:#fff}.celebration-progress{margin-bottom:24px}.celebration-progress .progress-header{display:flex;justify-content:space-between;font-size:12px;color:var(--text-muted);margin-bottom:8px}.progress-bar-celebration{height:8px;background:#ffffff1a;border-radius:4px;overflow:hidden;position:relative}.progress-fill-old{position:absolute;height:100%;background:#c41e3a80;border-radius:4px;transition:width .5s ease}.progress-fill-new{position:absolute;height:100%;background:linear-gradient(90deg,var(--accent-primary),var(--accent-secondary));border-radius:4px;animation:progressGrow 1s ease-out .5s forwards;box-shadow:0 0 20px #c41e3a80}@keyframes progressGrow{0%{opacity:.5}to{opacity:1}}.celebration-close-btn{padding:14px 32px;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));border:none;border-radius:12px;color:#fff;font-size:16px;font-weight:600;cursor:pointer;transition:all .2s}.celebration-close-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px #c41e3a66}.streak-fire{display:inline-flex;align-items:center;position:relative}.streak-fire .fire-icon{animation:flameDance .5s ease-in-out infinite alternate;color:var(--accent-streak);filter:drop-shadow(0 0 8px color-mix(in srgb,var(--accent-streak) 56%,transparent))}@keyframes flameDance{0%{transform:scaleY(1) translateY(0)}to{transform:scaleY(1.1) translateY(-2px)}}.streak-value{font-weight:700;color:var(--accent-streak);text-shadow:0 0 10px color-mix(in srgb,var(--accent-streak) 48%,transparent)}.xp-progress-bar{transition:width .8s cubic-bezier(.4,0,.2,1)}.xp-progress-bar.animate{animation:xpGain .5s ease-out}@keyframes xpGain{0%{filter:brightness(1)}50%{filter:brightness(1.5)}to{filter:brightness(1)}}.level-up-flash{position:fixed;top:0;right:0;bottom:0;left:0;background:radial-gradient(circle,rgba(196,30,58,.3) 0%,transparent 70%);pointer-events:none;animation:levelUpFlash 1s ease-out forwards;z-index:9999}@keyframes levelUpFlash{0%{opacity:1;transform:scale(.5)}to{opacity:0;transform:scale(2)}}.quick-start-container{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}.quick-start-btn{display:flex;align-items:center;gap:12px;width:100%;padding:16px;background:linear-gradient(135deg,#c41e3a26,#5c0f261a);border:1px solid rgba(196,30,58,.3);border-radius:16px;cursor:pointer;transition:all .3s ease;position:relative;overflow:hidden}.quick-start-btn:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(135deg,#c41e3a33,#5c0f2626);opacity:0;transition:opacity .3s}.quick-start-btn:hover:before{opacity:1}.quick-start-btn:hover{border-color:#c41e3a80;transform:translateY(-2px);box-shadow:0 8px 24px #c41e3a33}.quick-start-icon{width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#6366f1,#8b5cf6);border-radius:12px;color:#fff;flex-shrink:0;box-shadow:0 4px 12px #c41e3a66}.quick-start-text{display:flex;flex-direction:column;align-items:flex-start;flex:1}.quick-start-title{font-size:16px;font-weight:700;color:#fff;letter-spacing:-.3px}.quick-start-subtitle{font-size:12px;color:var(--text-muted);margin-top:2px}.quick-start-arrow{color:var(--text-muted);transition:transform .3s,color .3s}.quick-start-btn:hover .quick-start-arrow{transform:translate(4px);color:var(--accent-primary)}.quick-start-streak{display:flex;align-items:center;gap:6px;font-size:11px;color:var(--text-muted);padding-left:4px}.quick-start-streak svg{color:var(--accent-streak)}.quick-start-countdown-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:9999;display:flex;align-items:center;justify-content:center}.countdown-backdrop{position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(circle at center,#0f0a19f2,#05050ffa);backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%)}.countdown-backdrop:before{content:"";position:absolute;width:400px;height:400px;top:50%;left:50%;transform:translate(-50%,-50%);background:radial-gradient(circle,rgba(196,30,58,.15) 0%,rgba(147,51,234,.08) 40%,transparent 70%);animation:orbPulse 3s ease-in-out infinite}.countdown-backdrop:after{content:"";position:absolute;width:600px;height:600px;top:50%;left:50%;transform:translate(-50%,-50%);background:radial-gradient(circle,rgba(59,130,246,.08) 0%,rgba(147,51,234,.05) 30%,transparent 60%);animation:orbPulse 4s ease-in-out infinite reverse}@keyframes orbPulse{0%,to{transform:translate(-50%,-50%) scale(1);opacity:.6}50%{transform:translate(-50%,-50%) scale(1.2);opacity:1}}.countdown-content{position:relative;display:flex;flex-direction:column;align-items:center;text-align:center;padding:64px;max-width:500px;background:linear-gradient(135deg,#ffffff14,#ffffff08,#ffffff03);backdrop-filter:blur(40px) saturate(200%);-webkit-backdrop-filter:blur(40px) saturate(200%);border:1px solid rgba(255,255,255,.1);border-radius:40px;box-shadow:0 40px 100px #00000080,0 16px 40px #0000004d,inset 0 1px #ffffff1a,0 0 0 1px #ffffff08,0 0 120px #c41e3a1a}.countdown-content:before{content:"";position:absolute;top:0;left:0;right:0;height:50%;background:linear-gradient(180deg,rgba(255,255,255,.08) 0%,rgba(255,255,255,.02) 50%,transparent 100%);border-radius:40px 40px 0 0;pointer-events:none}.countdown-brain{width:80px;height:80px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#c41e3a33,#9333ea26,#3b82f61a);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.15);border-radius:24px;margin-bottom:40px;color:#ffffffe6;animation:brainFloat 3s ease-in-out infinite;box-shadow:0 8px 32px #c41e3a4d,inset 0 1px #ffffff1a}@keyframes brainFloat{0%,to{transform:translateY(0) rotate(0);box-shadow:0 8px 32px #c41e3a4d,0 0 40px #c41e3a33}50%{transform:translateY(-8px) rotate(3deg);box-shadow:0 16px 48px #c41e3a66,0 0 60px #c41e3a4d}}.countdown-number-container{position:relative;width:218px;height:218px;display:flex;align-items:center;justify-content:center;margin-bottom:36px}.countdown-number-container:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:50%;background:conic-gradient(from 0deg,#7dd3fc40,#38bdf88c 42%,#0ea5e933 68%,#7dd3fc40);animation:ringRotate 3.6s linear infinite;filter:blur(14px);opacity:.8}.countdown-number-container:after{content:"";position:absolute;top:15px;right:15px;bottom:15px;left:15px;border-radius:50%;background:radial-gradient(circle at 50% 35%,#1d2334fa,#090c14f5);border:1px solid rgba(255,255,255,.12);box-shadow:inset 0 1px #ffffff1f,inset 0 -16px 28px #00000059}.countdown-number-container.steady:before{background:conic-gradient(from 0deg,#fde04738,#fbbf248c 45%,#d977063d 76%,#fde04738)}.countdown-number-container.critical:before{background:conic-gradient(from 0deg,#fb71853d,#f43f5e94 44%,#be185d3d 74%,#fb71853d);animation-duration:1.2s}.countdown-number-container.go:before{background:conic-gradient(from 0deg,#4ade8040,#22c55e99 50%,#16a34a47 84%,#4ade8040);animation-duration:1.1s}@keyframes ringRotate{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.countdown-number{position:relative;z-index:1;font-size:118px;font-weight:900;font-family:JetBrains Mono,ui-monospace,SFMono-Regular,Menlo,monospace;color:#7dd3fc;line-height:1;letter-spacing:-6px;text-shadow:0 0 16px rgba(125,211,252,.35),0 0 34px rgba(56,189,248,.28);animation:countdownTickPop .75s cubic-bezier(.19,1.05,.33,1)}.countdown-number.tone-launch{color:#7dd3fc}.countdown-number.tone-steady{color:#fde047;text-shadow:0 0 16px rgba(253,224,71,.45),0 0 34px rgba(234,179,8,.35)}.countdown-number.tone-critical{color:#fb7185;text-shadow:0 0 18px rgba(251,113,133,.55),0 0 36px rgba(190,24,93,.4);animation:countdownCriticalPulse .55s steps(2,end)}@keyframes countdownTickPop{0%{transform:scale(1.42);opacity:0;letter-spacing:-12px}62%{transform:scale(.92);letter-spacing:-4px}to{transform:scale(1);opacity:1;letter-spacing:-6px}}@keyframes countdownCriticalPulse{0%,to{transform:translateY(0) scale(1);opacity:1}50%{transform:translateY(-2px) scale(1.06);opacity:.85}}.countdown-number.go{font-size:72px;letter-spacing:-2px;background:linear-gradient(135deg,#22c55e,#4ade80,#86efac);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;animation:goExplode .58s cubic-bezier(.22,1.4,.36,1);text-shadow:none;filter:drop-shadow(0 0 30px rgba(74,222,128,.8))}@keyframes goExplode{0%{transform:scale(.3) rotate(-10deg);opacity:0}60%{transform:scale(1.2) rotate(5deg)}to{transform:scale(1) rotate(0);opacity:1}}.countdown-message{margin-bottom:32px}.countdown-main-text{font-size:22px;font-weight:600;color:#fffffff2;margin-bottom:8px;text-shadow:0 2px 12px rgba(0,0,0,.5)}.countdown-sub-text{font-size:15px;color:#ffffff80;font-weight:400}.countdown-dots{display:flex;gap:16px}.countdown-dot{width:14px;height:14px;border-radius:50%;background:#ffffff1a;border:1px solid rgba(255,255,255,.15);transition:all .4s cubic-bezier(.34,1.56,.64,1)}.countdown-dot.active{background:linear-gradient(135deg,#c41e3acc,#9333ea99);border-color:#ffffff4d;box-shadow:0 0 20px #c41e3a99,0 0 40px #9333ea66,inset 0 1px #ffffff4d;transform:scale(1.2)}.quick-start-session{display:flex;flex-direction:column;align-items:center;padding:20px;background:linear-gradient(135deg,#22c55e1a,#c41e3a0d);border:1px solid rgba(34,197,94,.3);border-radius:16px;margin-bottom:16px}.session-header{display:flex;align-items:center;gap:8px;font-size:12px;font-weight:600;color:var(--accent-secondary);text-transform:uppercase;letter-spacing:1px;margin-bottom:16px}.session-sparkle{animation:sparkle 1.5s ease-in-out infinite}@keyframes sparkle{0%,to{opacity:1;transform:scale(1)}50%{opacity:.6;transform:scale(1.2)}}.session-timer-ring{position:relative;width:120px;height:120px;margin-bottom:16px}.session-progress-svg{width:100%;height:100%;transform:rotate(-90deg)}.session-track{fill:none;stroke:#ffffff1a;stroke-width:8}.session-progress{fill:none;stroke:url(#sessionGradient);stroke:var(--accent-primary);stroke-width:8;stroke-linecap:round;transition:stroke-dasharray 1s linear}.session-timer-content{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center}.session-time{font-size:28px;font-weight:700;color:#fff;font-variant-numeric:tabular-nums}.session-label{font-size:10px;color:var(--text-muted);text-transform:uppercase;letter-spacing:1px}.session-tip{font-size:13px;color:var(--text-secondary);text-align:center;padding:0 16px;margin-bottom:16px;min-height:40px}.session-complete-early{display:flex;align-items:center;gap:6px;padding:8px 16px;background:transparent;border:1px solid var(--border-subtle);border-radius:8px;color:var(--text-muted);font-size:12px;cursor:pointer;transition:all .2s}.session-complete-early:hover{border-color:var(--accent-secondary);color:var(--accent-secondary)}.quick-start-complete{display:flex;flex-direction:column;align-items:center;padding:32px 24px;background:linear-gradient(135deg,#22c55e26,#c41e3a1a);border:1px solid rgba(34,197,94,.3);border-radius:16px;margin-bottom:16px}.complete-celebration{width:80px;height:80px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--accent-primary),#c41e3a);border-radius:50%;color:#fff;margin-bottom:20px;box-shadow:0 8px 32px #22c55e66}.complete-title{font-size:22px;font-weight:700;color:#fff;margin-bottom:6px}.complete-subtitle{font-size:14px;color:var(--text-secondary);margin-bottom:16px;text-align:center}.complete-reward{display:flex;align-items:center;gap:6px;padding:8px 16px;background:#fbbf2426;border-radius:20px;color:var(--accent-gold);font-size:14px;font-weight:600;margin-bottom:20px}.complete-actions{display:flex;flex-direction:column;gap:10px;width:100%}.complete-continue-btn{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:14px;background:linear-gradient(135deg,#6366f1,#8b5cf6);border:none;border-radius:12px;color:#fff;font-size:15px;font-weight:600;cursor:pointer;transition:all .2s}.complete-continue-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px #c41e3a66}.complete-finish-btn{padding:12px;background:transparent;border:none;color:var(--text-muted);font-size:13px;cursor:pointer;transition:color .2s}.complete-finish-btn:hover{color:var(--text-secondary)}.quick-start-fab{position:fixed;bottom:32px;right:32px;width:60px;height:60px;border-radius:20px;background:linear-gradient(135deg,#ffffff1a,#ffffff0d,#ffffff05);backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);border:1px solid rgba(255,255,255,.15);box-shadow:0 8px 32px #0000004d,0 2px 8px #0003,inset 0 1px #ffffff1a,inset 0 -1px #0000001a,0 0 0 1px #ffffff0d;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#ffffffe6;z-index:1000;transition:all .4s cubic-bezier(.34,1.56,.64,1);overflow:hidden}.quick-start-fab:before{content:"";position:absolute;top:0;left:0;right:0;height:50%;background:linear-gradient(180deg,rgba(255,255,255,.15) 0%,rgba(255,255,255,.05) 50%,transparent 100%);border-radius:20px 20px 0 0;pointer-events:none}.quick-start-fab:after{content:"";position:absolute;top:-2px;right:-2px;bottom:-2px;left:-2px;border-radius:22px;background:linear-gradient(135deg,#c41e3a4d,#9333ea33,#3b82f633);z-index:-1;opacity:0;transition:opacity .4s ease;filter:blur(8px)}.quick-start-fab:hover{transform:translateY(-4px) scale(1.05);border-color:#ffffff40;box-shadow:0 16px 48px #0006,0 4px 16px #0000004d,inset 0 1px #fff3,inset 0 -1px #0000001a,0 0 40px #c41e3a26}.quick-start-fab:hover:after{opacity:1}.quick-start-fab:active{transform:translateY(-2px) scale(1.02);transition-duration:.1s}.quick-start-fab svg{position:relative;z-index:1;filter:drop-shadow(0 2px 4px rgba(0,0,0,.3));transition:transform .3s ease}.quick-start-fab:hover svg{transform:rotate(-10deg) scale(1.1)}.fab-badge{position:absolute;top:-6px;right:-6px;min-width:20px;height:20px;background:linear-gradient(135deg,#fbbf24e6,#f59e0be6);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.3);border-radius:10px;font-size:10px;font-weight:700;color:#000;display:flex;align-items:center;justify-content:center;padding:0 5px;box-shadow:0 4px 12px #fbbf2466,inset 0 1px #fff6;z-index:2}.quick-start-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:9999;display:flex;align-items:center;justify-content:center;background:#000000b3;backdrop-filter:blur(16px) saturate(180%);-webkit-backdrop-filter:blur(16px) saturate(180%)}.quick-start-session-fab{position:fixed;bottom:24px;right:24px;display:flex;flex-direction:column;align-items:center;gap:10px;padding:16px 16px 14px;background:linear-gradient(155deg,#0a0b0efa,#16181ef5);border:1px solid rgba(255,255,255,.15);border-radius:18px;box-shadow:0 20px 46px #00000094,0 0 24px #ef444429,inset 0 1px #ffffff12;z-index:1000}.quick-start-session-fab:before{content:"";position:absolute;top:0;left:0;right:0;height:42%;background:linear-gradient(180deg,rgba(255,255,255,.08) 0%,transparent 100%);border-radius:18px 18px 0 0;pointer-events:none}.quick-start-session-fab .session-timer-ring{width:86px;height:86px;position:relative;z-index:1}.quick-start-session-fab .session-time{font-size:20px;font-weight:700;color:#fffffff5;text-shadow:0 2px 10px rgba(0,0,0,.45)}.session-complete-btn{display:flex;align-items:center;gap:6px;padding:9px 14px;background:linear-gradient(135deg,#ef444459,#b91c1c47);border:1px solid rgba(248,113,113,.35);border-radius:10px;color:#fef2f2f5;font-size:12px;font-weight:600;cursor:pointer;transition:all .2s ease;position:relative;z-index:1}.session-complete-btn:hover{background:linear-gradient(135deg,#f8717161,#dc262652);border-color:#fca5a573;color:#fff;transform:translateY(-1px)}.complete-content{display:flex;flex-direction:column;align-items:center;padding:48px;background:linear-gradient(135deg,#ffffff1a,#ffffff0d,#ffffff05);backdrop-filter:blur(32px) saturate(200%);-webkit-backdrop-filter:blur(32px) saturate(200%);border:1px solid rgba(255,255,255,.15);border-radius:32px;max-width:400px;box-shadow:0 32px 80px #00000080,0 12px 32px #0000004d,inset 0 1px #ffffff26,0 0 0 1px #ffffff0d}.complete-content:before{content:"";position:absolute;top:0;left:0;right:0;height:40%;background:linear-gradient(180deg,rgba(255,255,255,.1) 0%,rgba(255,255,255,.03) 50%,transparent 100%);border-radius:32px 32px 0 0;pointer-events:none}.daily-goal-container{display:flex;flex-direction:column;align-items:center;padding:20px;background:linear-gradient(135deg,#161214f2,#0f0c0ee6);border-radius:16px;border:1px solid rgba(255,255,255,.06);box-shadow:0 8px 32px #0003,inset 0 1px #ffffff0a;margin-bottom:16px;position:relative}.overall-progress-bar{width:100%;margin-bottom:16px}.overall-progress-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px;font-size:12px;color:var(--text-secondary)}.overall-percent{font-weight:600;color:var(--accent-primary)}.overall-progress-track{width:100%;height:6px;background:#ffffff1a;border-radius:3px;overflow:hidden}.overall-progress-fill{height:100%;background:linear-gradient(90deg,var(--accent-primary),#ff6b8a);border-radius:3px;transition:width .5s ease}.milestone-popup{position:absolute;top:-10px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:8px;padding:8px 16px;background:linear-gradient(135deg,#fbbf2433,#f59e0b1a);border:1px solid rgba(251,191,36,.4);border-radius:20px;z-index:10}.milestone-icon{font-size:18px}.milestone-message{font-size:13px;font-weight:600;color:var(--accent-gold)}.daily-goal-ring-wrapper{position:relative;width:140px;height:140px;margin-bottom:12px}.daily-goal-svg{width:100%;height:100%;transform:rotate(-90deg)}.goal-track{stroke:#ffffff14}.goal-progress{stroke:var(--accent-primary);transition:stroke .3s;filter:drop-shadow(0 0 4px rgba(214,64,69,.3))}.goal-progress.complete{stroke:var(--accent-primary);filter:drop-shadow(0 0 12px rgba(214,64,69,.6))}.milestone-marker{fill:#fff3;transition:all .3s}.milestone-marker.reached{fill:var(--accent-gold);filter:drop-shadow(0 0 4px rgba(251,191,36,.6))}.daily-goal-content{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center}.goal-complete-badge{width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--accent-primary),#c41e3a);border-radius:50%;color:#fff;box-shadow:0 4px 16px #22c55e66}.goal-current{font-size:28px;font-weight:700;color:#fff;line-height:1}.goal-target{font-size:13px;color:var(--text-muted);margin-top:4px}.daily-goal-header{margin-bottom:12px}.goal-label-btn{display:flex;align-items:center;gap:6px;padding:6px 12px;background:transparent;border:1px solid var(--border-subtle);border-radius:8px;color:var(--text-secondary);font-size:12px;font-weight:500;cursor:pointer;transition:all .2s}.goal-label-btn:hover{border-color:var(--accent-primary);color:var(--accent-primary)}.goal-picker{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px;justify-content:center;overflow:hidden}.goal-preset{display:flex;flex-direction:column;align-items:center;padding:10px 14px;background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:10px;cursor:pointer;transition:all .2s;min-width:70px}.goal-preset:hover{border-color:var(--accent-primary);background:#c41e3a1a}.goal-preset.active{border-color:var(--accent-primary);background:#c41e3a26}.preset-label{font-size:14px;font-weight:600;color:#fff}.preset-desc{font-size:10px;color:var(--text-muted);margin-top:2px}.streak-section{display:flex;align-items:center;gap:12px;padding:10px 16px;background:color-mix(in srgb,var(--accent-streak) 18%,transparent);border-radius:10px;margin-bottom:12px}.streak-display{display:flex;align-items:center;gap:6px}.streak-display svg{color:var(--text-muted)}.streak-display svg.streak-active{color:var(--accent-streak);filter:drop-shadow(0 0 8px color-mix(in srgb,var(--accent-streak) 46%,transparent));animation:flamePulse 2s ease-in-out infinite}.streak-count{font-size:18px;font-weight:700;color:var(--text-primary)}.streak-label{font-size:12px;color:var(--text-muted)}.streak-shield{display:flex;align-items:center;gap:4px;padding:4px 10px;border-radius:6px;font-size:11px;font-weight:500}.streak-shield.active{background:#22c55e33;color:var(--accent-secondary)}.streak-shield-btn{display:flex;align-items:center;gap:4px;padding:6px 10px;background:#c41e3a1a;border:1px solid rgba(196,30,58,.3);border-radius:6px;color:var(--accent-primary);font-size:11px;font-weight:500;cursor:pointer;transition:all .2s}.streak-shield-btn:hover:not(:disabled){background:#c41e3a33;border-color:var(--accent-primary)}.streak-shield-btn:disabled{opacity:.5;cursor:not-allowed}.goal-message{font-size:12px;color:var(--text-muted);text-align:center}.goal-complete-text{display:flex;align-items:center;gap:6px;color:var(--accent-secondary);font-weight:500}.goal-progress-text{color:var(--text-secondary)}.goal-start-text{color:var(--text-muted)}.image-viewer{display:flex;flex-direction:column;height:100%;background:var(--bg-secondary)}.image-viewer-toolbar{display:flex;align-items:center;gap:8px;padding:12px 16px;background:var(--glass-bg);border-bottom:1px solid var(--glass-border)}.image-viewer-toolbar button{display:flex;align-items:center;justify-content:center;width:36px;height:36px;background:var(--bg-tertiary);border:1px solid var(--glass-border);border-radius:8px;color:var(--text-primary);cursor:pointer;transition:all .2s}.image-viewer-toolbar button:hover{background:var(--accent-primary-muted);border-color:var(--accent-primary)}.zoom-level{min-width:50px;text-align:center;font-size:13px;color:var(--text-secondary)}.toolbar-divider{width:1px;height:24px;background:var(--glass-border);margin:0 8px}.pan-hint{display:flex;align-items:center;gap:4px;font-size:12px;color:var(--text-muted);margin-left:auto}.image-container{flex:1;display:flex;align-items:center;justify-content:center;overflow:hidden;padding:20px}.image-container img{max-width:100%;max-height:100%;object-fit:contain;border-radius:8px;box-shadow:0 10px 40px #0006}.image-info{padding:12px 16px;background:var(--glass-bg);border-top:1px solid var(--glass-border);font-size:13px;color:var(--text-secondary)}.image-viewer-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--text-muted)}.spreadsheet-viewer{display:flex;flex-direction:column;height:100%;background:#eef1f5;color:#101828}.excel-mini-viewer{border-radius:0}.sheet-ribbon{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 14px;background:linear-gradient(180deg,#f8fafc,#eef2f7);border-bottom:1px solid #d8dee8}.sheet-ribbon-group{display:flex;align-items:center;gap:8px}.sheet-ribbon-file{display:inline-flex;align-items:center;gap:8px;max-width:55%;min-width:0;color:#344054;font-size:12px;font-weight:600}.sheet-ribbon-file span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sheet-ribbon-status{margin-left:auto;padding:5px 10px;border-radius:999px;border:1px solid #d0d7e2;background:#fff;color:#475467;font-size:11px;font-weight:700;letter-spacing:.02em}.sheet-ribbon-status.saving{color:#166534;border-color:#86efac;background:#f0fdf4}.sheet-tabs{display:flex;gap:6px;padding:6px 12px;background:#f8fafc;border-top:1px solid #d8dee8;border-bottom:1px solid #d8dee8;overflow-x:auto;scrollbar-width:thin}.excel-sheet-tabs{margin-top:auto}.sheet-tab{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;background:#fff;border:1px solid #d0d7e2;border-radius:8px;color:#475467;font-size:12px;font-weight:600;cursor:pointer;transition:background .16s ease,border-color .16s ease,color .16s ease;white-space:nowrap}.sheet-tab:hover{background:#f3f6fb;color:#1d2939}.sheet-tab.active{background:#fff;border-color:#16a34a;color:#166534;box-shadow:inset 0 -2px #16a34a}.sheet-tab.add{width:34px;justify-content:center;padding:7px 0}.sheet-action-btn{display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 11px;border-radius:8px;border:1px solid #d0d7e2;background:#fff;color:#344054;font-size:12px;font-weight:600;cursor:pointer;transition:background .15s ease,border-color .15s ease,color .15s ease}.sheet-action-btn:hover{background:#f3f6fb;color:#1d2939;border-color:#bfc8d7}.spreadsheet-formula-bar{display:grid;grid-template-columns:88px 38px 1fr;gap:10px;align-items:center;padding:9px 14px;border-bottom:1px solid #d8dee8;background:#f8fafc}.sheet-formula-fx{height:34px;border:1px solid #d0d7e2;background:#fff;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;font-family:JetBrains Mono,ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;font-weight:600;color:#667085}.sheet-cell-ref{border:1px solid #d0d7e2;background:#fff;border-radius:8px;color:#344054;font-size:12px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;padding:9px 10px;text-align:center}.sheet-formula-input{width:100%;border:1px solid #d0d7e2;background:#fff;border-radius:8px;color:#101828;padding:9px 12px;font-size:13px;outline:none;transition:border-color .16s ease,box-shadow .16s ease}.sheet-formula-input:focus{border-color:#16a34a;box-shadow:0 0 0 2px #16a34a2e}.spreadsheet-table-container{flex:1;overflow:auto;padding:0;background:#fff}.excel-grid-wrap{border-top:1px solid #d8dee8;border-bottom:1px solid #d8dee8}.spreadsheet-table{width:100%;border-collapse:separate;border-spacing:0;font-size:12px;font-family:Segoe UI,Calibri,sans-serif}.spreadsheet-table th,.spreadsheet-table td{padding:0;border-right:1px solid #e3e7ee;border-bottom:1px solid #e3e7ee;text-align:left}.spreadsheet-table th{background:#f8fafc;color:#475467;font-weight:600;position:sticky;top:0;z-index:2;height:28px;padding:0 10px;border-top:1px solid #e3e7ee}.spreadsheet-table th.col-header.active{background:#eaf8ef;color:#166534}.spreadsheet-table td{background:#fff;color:#101828;min-width:120px;height:28px}.spreadsheet-table td.sheet-cell{position:relative}.spreadsheet-table td.sheet-cell.active{box-shadow:inset 0 0 0 2px #16a34a;z-index:1}.sheet-cell-input{width:100%;height:100%;border:none;outline:none;background:transparent;color:inherit;padding:4px 8px;font:inherit}.sheet-cell-input:focus{background:#f9fefb}.spreadsheet-table .row-number{width:52px;text-align:center;color:#667085;background:#f8fafc!important;font-weight:600;position:sticky;left:0;z-index:3;padding:0 6px}.spreadsheet-table .row-number.active{background:#eaf8ef!important;color:#166534}.spreadsheet-info{display:flex;justify-content:space-between;padding:8px 14px;background:#f8fafc;border-top:1px solid #d8dee8;font-size:12px;color:#475467}.sheet-count{color:#667085}.spreadsheet-viewer-empty,.spreadsheet-viewer-loading,.spreadsheet-viewer-error,.spreadsheet-empty-sheet{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:12px;color:#667085;background:#f8fafc}.loading-spinner{width:40px;height:40px;border:3px solid var(--glass-border);border-top-color:var(--accent-primary);border-radius:50%;animation:spin 1s linear infinite}.doc-viewer{display:flex;flex-direction:column;height:100%;background:linear-gradient(180deg,#0a0d14f5,#0c1018fa)}.doc-toolbar{display:flex;flex-direction:column;gap:10px;padding:12px 14px;background:#0a0e16f0;border-bottom:1px solid var(--glass-border)}.doc-toolbar-row{display:flex;align-items:center;flex-wrap:wrap;gap:8px}.doc-toolbar-row.annotation-row{padding-top:2px}.doc-toolbar-label{display:inline-flex;align-items:center;min-width:52px;color:var(--text-muted);font-size:10px;font-weight:700;letter-spacing:.16em;text-transform:uppercase}.doc-toolbar-group{display:flex;align-items:center;flex-wrap:wrap;gap:6px}.doc-toolbar-divider{width:1px;align-self:stretch;min-height:28px;background:#94a3b829}.doc-toolbar-spacer{flex:1;min-width:10px}.doc-btn{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 10px;border-radius:11px;border:1px solid rgba(255,255,255,.08);background:#ffffff08;color:var(--text-secondary);font-size:12px;font-weight:600;cursor:pointer;transition:border-color .15s ease,background .15s ease,color .15s ease,transform .15s ease}.doc-btn.icon-only{width:34px;min-width:34px;padding:0;justify-content:center}.doc-btn:hover{background:#ffffff0d;border-color:#ffffff24;color:var(--text-primary)}.doc-btn.active{background:#94a3b81f;border-color:#94a3b847;color:var(--text-primary)}.doc-btn.primary{background:#94a3b81f;border-color:#94a3b83d;color:var(--text-primary)}.doc-btn.danger:hover{background:#ef44441a;border-color:#ef444438;color:#fca5a5}.doc-select{height:34px;min-width:132px;padding:0 10px;border-radius:11px;border:1px solid rgba(255,255,255,.08);background:#ffffff08;color:var(--text-primary);font-size:12px;font-weight:600;cursor:pointer}.doc-select.small{min-width:62px}.doc-select:focus{outline:none;border-color:#94a3b84d;box-shadow:0 0 0 2px #94a3b81f}.doc-color-field{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 8px;border:1px solid rgba(255,255,255,.08);border-radius:11px;background:#ffffff08;color:var(--text-secondary);font-size:11px;font-weight:700;text-transform:uppercase}.doc-color-field input{width:20px;height:20px;border:none;border-radius:6px;background:transparent;padding:0;cursor:pointer}.doc-save-status{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 10px;border:1px solid rgba(255,255,255,.08);border-radius:11px;background:#ffffff08;color:var(--text-secondary);font-size:11px;font-weight:700}.doc-save-status .saved{color:#cbd5e1}.doc-save-status .saving{color:#94a3b8}.doc-pages{flex:1;overflow:auto;padding:24px;display:flex;flex-direction:column;gap:20px;scroll-behavior:smooth;overscroll-behavior:contain}.doc-page{background:#fff;color:#0f172a;border-radius:16px;box-shadow:0 12px 40px #0f172a1f;min-height:720px;padding:26px 34px 40px;border:1px solid rgba(15,23,42,.08);position:relative;scroll-margin-top:16px;transition:box-shadow .22s ease,border-color .22s ease,transform .22s ease}.doc-page.active{box-shadow:0 18px 52px #3341552e;border-color:#94a3b857;transform:translateY(-2px)}.doc-page-header{position:absolute;top:14px;right:18px;font-size:11px;color:#0f172a73}.doc-page-stage{position:relative;min-height:640px}.doc-page-body{position:relative;z-index:1;outline:none;min-height:640px;font-size:15px;line-height:1.6;font-family:Calibri,Segoe UI,sans-serif}.doc-page-body.markup-mode{-webkit-user-select:none;user-select:none}.doc-page-body:focus{caret-color:#334155}.doc-page-body h1,.doc-page-body h2,.doc-page-body h3,.doc-page-body h4{margin:.4em 0}.doc-page-body p{margin:.45em 0}.doc-page-body blockquote{margin:.9em 0;border-left:3px solid rgba(100,116,139,.45);padding-left:10px;color:#0f172ac7}.doc-page-body a{color:#2563eb;text-decoration:underline}.doc-annotation-capture,.doc-annotation-surface{position:absolute;top:0;right:0;bottom:0;left:0}.doc-annotation-capture{z-index:2;pointer-events:none}.doc-annotation-capture.active{pointer-events:auto}.doc-annotation-surface{z-index:3;pointer-events:none}.doc-annotation-layer{pointer-events:none}.doc-note-popup,.doc-inline-text-editor{z-index:4}.doc-viewer-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:12px;color:var(--text-muted)}.doc-viewer-zen{position:fixed;top:0;right:0;bottom:0;left:0;z-index:200;background:var(--bg-primary);display:flex;flex-direction:column}.doc-viewer-zen .doc-toolbar{border-bottom:1px solid var(--border-subtle)}.doc-viewer-zen .doc-pages{flex:1;overflow-y:auto}.doc-ai-bar{display:flex;align-items:center;gap:6px;padding:6px 16px;background:linear-gradient(135deg,#6366f11f,#ec489914);border-top:1px solid rgba(99,102,241,.2);font-size:12px;flex-shrink:0}.doc-ai-bar-icon{color:var(--accent-primary);flex-shrink:0}.doc-ai-bar-label{color:var(--text-secondary);font-weight:500}.doc-ai-action{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:12px;border:1px solid rgba(99,102,241,.3);background:transparent;color:var(--accent-primary);font-size:11px;font-weight:500;cursor:pointer;transition:background .15s,color .15s}.doc-ai-action:hover:not(:disabled){background:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}.doc-ai-action:disabled{opacity:.5;cursor:not-allowed}.doc-ai-error{color:var(--error, #f87171);font-size:11px;margin-left:4px}.doc-footer{display:flex;align-items:center;justify-content:flex-end;gap:16px;padding:5px 20px;border-top:1px solid var(--border-subtle);font-size:11px;color:var(--text-muted);flex-shrink:0;background:var(--bg-secondary)}.doc-word-count,.doc-page-count{opacity:.7}.presentation-viewer{display:flex;flex-direction:column;height:100%;background:var(--bg-secondary)}.presentation-nav{display:flex;align-items:center;justify-content:center;gap:20px;padding:16px;background:var(--glass-bg);border-bottom:1px solid var(--glass-border)}.presentation-nav .nav-btn{display:flex;align-items:center;justify-content:center;width:44px;height:44px;background:var(--bg-tertiary);border:1px solid var(--glass-border);border-radius:50%;color:var(--text-primary);cursor:pointer;transition:all .2s}.presentation-nav .nav-btn:hover:not(:disabled){background:var(--accent-primary-muted);border-color:var(--accent-primary);transform:scale(1.05)}.presentation-nav .nav-btn:disabled{opacity:.4;cursor:not-allowed}.slide-counter{font-size:16px;font-weight:600;color:var(--text-primary);min-width:80px;text-align:center}.slide-container{flex:1;display:flex;align-items:center;justify-content:center;padding:40px;overflow:auto;scroll-behavior:smooth;overscroll-behavior:contain}.slide-workspace{width:100%;max-width:1320px;display:grid;grid-template-columns:minmax(0,1.8fr) minmax(280px,.95fr);gap:18px;align-items:stretch}.slide-content{width:100%;aspect-ratio:16 / 9;min-height:360px;background:var(--bg-elevated);border:1px solid var(--glass-border);border-radius:14px;padding:48px 56px;box-shadow:0 24px 72px #0000006b,0 2px #ffffff0a inset;position:relative;overflow:auto}.slide-content:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:inherit;pointer-events:none;background:linear-gradient(180deg,#ffffff06,#fff0)}.slide-content-animated{animation:slideContentIn .28s cubic-bezier(.22,1,.36,1)}@keyframes slideContentIn{0%{opacity:0;transform:translateY(8px) scale(.995)}to{opacity:1;transform:translateY(0) scale(1)}}.slide-number{font-size:12px;color:var(--text-muted);margin-bottom:20px;text-transform:uppercase;letter-spacing:1px}.slide-text{font-size:18px;line-height:1.8;color:var(--text-primary)}.slide-text p{margin-bottom:12px}.slide-text p:first-child{font-size:24px;font-weight:600;color:var(--text-primary);margin-bottom:24px}.slide-rich{font-size:18px;line-height:1.65;color:var(--text-primary)}.slide-rich h1,.slide-rich h2,.slide-rich h3,.slide-rich h4{margin:0 0 14px;line-height:1.3}.slide-rich .slide-rich-title,.slide-rich h2:first-child{font-size:30px;font-weight:800;margin-bottom:20px}.slide-rich .slide-rich-subtitle,.slide-rich h3:first-child{font-size:22px;font-weight:700;margin-bottom:16px;color:var(--text-secondary)}.slide-rich p{margin:0 0 12px}.slide-rich ul,.slide-rich ol{margin:0 0 14px 20px;padding:0}.slide-rich li{margin:4px 0}.slide-rich a{color:var(--accent-secondary);text-decoration:underline}.slide-rich table{width:100%;border-collapse:collapse;margin:14px 0;font-size:15px}.slide-rich td,.slide-rich th{border:1px solid var(--glass-border);padding:8px 10px;vertical-align:top}.slide-empty{color:var(--text-muted);font-style:italic}.slide-rich .slide-figure{margin:16px auto;display:flex;flex-direction:column;align-items:center;gap:6px;max-width:100%}.slide-rich .slide-figure img{display:block;max-width:100%;max-height:60vh;width:auto;height:auto;border-radius:10px;box-shadow:0 8px 30px #00000040;background:#ffffff0a}.slide-rich .slide-figure figcaption{font-size:13px;color:var(--text-muted);text-align:center}.slide-notes-panel{min-height:500px;background:var(--bg-elevated);border:1px solid var(--glass-border);border-radius:16px;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 16px 45px #00000040}.slide-notes-header{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 14px;border-bottom:1px solid var(--glass-border);background:#ffffff05}.slide-notes-header h4{margin:0;font-size:13px;font-weight:700;color:var(--text-primary)}.slide-notes-status{font-size:11px;color:var(--text-muted)}.slide-notes-status.typing{color:var(--accent-primary)}.slide-notes-textarea{flex:1;width:100%;border:none;outline:none;resize:none;background:transparent;color:var(--text-primary);padding:14px;font-size:13px;line-height:1.55;font-family:var(--font-family)}.slide-notes-textarea::placeholder{color:var(--text-muted)}.slide-notes-footer{padding:8px 14px;border-top:1px solid var(--glass-border);font-size:11px;color:var(--text-muted);background:#ffffff05}.slide-thumbnails{display:flex;gap:8px;padding:12px 16px;background:var(--glass-bg);border-top:1px solid var(--glass-border);overflow-x:auto;justify-content:center}.slide-thumbnails .thumbnail{width:64px;height:36px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border:2px solid var(--glass-border);border-radius:6px;color:var(--text-secondary);font-size:11px;font-weight:600;cursor:pointer;transition:all .2s;flex-shrink:0;box-shadow:0 1px 4px #0000002e}.slide-thumbnails .thumbnail:hover{background:var(--bg-elevated);color:var(--text-primary)}.slide-thumbnails .thumbnail.active{background:var(--accent-primary);border-color:var(--accent-primary);color:#fff}.keyboard-hint{padding:8px;text-align:center;font-size:12px;color:var(--text-muted);background:var(--bg-primary)}.presentation-viewer-empty,.presentation-viewer-loading,.presentation-viewer-error{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:12px;color:var(--text-muted)}@media (max-width: 1100px){.slide-container{padding:16px}.slide-workspace{grid-template-columns:1fr;gap:12px}.slide-content{min-height:360px;padding:24px}.slide-notes-panel{min-height:240px}}.file-type-badge{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:4px;font-size:10px;font-weight:600;text-transform:uppercase}.file-type-badge.pdf{background:#ef444433;color:#ef4444}.file-type-badge.image{background:#22c55e33;color:var(--accent-primary)}.file-type-badge.spreadsheet{background:#3b82f633;color:#3b82f6}.file-type-badge.presentation{background:#f9731633;color:#f97316}.ai-chat-fab{position:fixed;bottom:24px;right:24px;display:flex;align-items:center;gap:10px;padding:14px 22px;background:linear-gradient(135deg,var(--accent-primary),#9a1830);border:none;border-radius:50px;color:#fff;font-size:14px;font-weight:600;cursor:pointer;box-shadow:0 8px 32px #c41e3a66,0 0 60px #c41e3a33;z-index:9999;transition:all .3s cubic-bezier(.25,.46,.45,.94)}.ai-chat-fab:hover{transform:translateY(-3px) scale(1.03);box-shadow:0 12px 40px #c41e3a80,0 0 80px #c41e3a4d}.ai-chat-fab svg{animation:sparkle 2s ease-in-out infinite}@keyframes sparkle{0%,to{opacity:1;transform:rotate(0)}50%{opacity:.8;transform:rotate(15deg)}}.fab-label{white-space:nowrap}.ai-chat-window{position:fixed;bottom:24px;right:24px;width:400px;height:550px;background:var(--glass-bg);backdrop-filter:var(--glass-blur-strong);-webkit-backdrop-filter:var(--glass-blur-strong);border:1px solid var(--glass-border);border-radius:20px;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 25px 80px #00000080,0 0 60px #c41e3a26;z-index:9999}.ai-chat-window.expanded{width:600px;height:700px;bottom:50%;right:50%;transform:translate(50%,50%)}.ai-chat-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;background:linear-gradient(135deg,#c41e3a26,#8b15381a);border-bottom:1px solid var(--glass-border)}.ai-chat-title{display:flex;align-items:center;gap:12px}.ai-avatar{width:36px;height:36px;background:linear-gradient(135deg,var(--accent-primary),#9a1830);border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff}.ai-chat-title h3{margin:0;font-size:15px;font-weight:600;color:var(--text-primary)}.ai-status{font-size:11px;color:var(--text-muted)}.ai-chat-actions{display:flex;gap:6px}.ai-action-btn{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;border-radius:8px;color:var(--text-secondary);cursor:pointer;transition:all .15s}.ai-action-btn:hover{background:#ffffff14;color:var(--text-primary)}.ai-action-btn.close:hover{background:#ef444433;color:#ef4444}.ai-context-banner{display:flex;align-items:center;gap:8px;padding:10px 20px;background:#c41e3a14;border-bottom:1px solid var(--glass-border);font-size:12px;color:var(--text-secondary)}.ai-context-banner svg{color:var(--accent-primary)}.ai-chat-messages{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:16px}.ai-chat-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:12px;padding:20px}.ai-chat-empty .empty-icon{width:72px;height:72px;background:linear-gradient(135deg,#c41e3a33,#8b15381a);border-radius:20px;display:flex;align-items:center;justify-content:center;color:var(--accent-primary);margin-bottom:8px}.ai-chat-empty h4{margin:0;font-size:18px;font-weight:600;color:var(--text-primary)}.ai-chat-empty p{margin:0;font-size:14px;color:var(--text-secondary);max-width:280px}.quick-prompts{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:16px}.quick-prompt-btn{display:flex;align-items:center;gap:6px;padding:8px 14px;background:var(--bg-tertiary);border:1px solid var(--border-medium);border-radius:20px;color:var(--text-secondary);font-size:12px;cursor:pointer;transition:all .2s}.quick-prompt-btn:hover{background:var(--bg-elevated);border-color:var(--accent-primary);color:var(--text-primary)}.ai-message{display:flex;gap:12px;max-width:90%}.ai-message.user{flex-direction:row-reverse;align-self:flex-end}.ai-message.assistant{align-self:flex-start}.message-avatar{width:32px;height:32px;border-radius:10px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.ai-message.user .message-avatar{background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff}.ai-message.assistant .message-avatar{background:linear-gradient(135deg,var(--accent-primary),#9a1830);color:#fff}.message-content{flex:1}.message-text{padding:12px 16px;border-radius:16px;font-size:14px;line-height:1.5;white-space:pre-wrap;word-wrap:break-word}.ai-message.user .message-text{background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;border-bottom-right-radius:4px}.ai-message.assistant .message-text{background:var(--bg-elevated);color:var(--text-primary);border:1px solid var(--border-subtle);border-bottom-left-radius:4px}.ai-message.error .message-text{background:#ef44441a;border-color:#ef44444d;color:#fca5a5}.typing-indicator{display:flex;gap:6px;padding:12px 16px}.typing-indicator span{width:8px;height:8px;background:var(--text-muted);border-radius:50%;animation:typing 1.4s infinite}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}@keyframes typing{0%,60%,to{transform:translateY(0);opacity:.4}30%{transform:translateY(-8px);opacity:1}}.ai-chat-input-container{display:flex;gap:10px;padding:16px 20px;background:var(--bg-secondary);border-top:1px solid var(--glass-border)}.ai-chat-input{flex:1;padding:12px 16px;background:var(--bg-tertiary);border:1px solid var(--border-medium);border-radius:14px;color:var(--text-primary);font-size:14px;font-family:inherit;resize:none;outline:none;transition:border-color .2s}.ai-chat-input:focus{border-color:var(--accent-primary)}.ai-chat-input::placeholder{color:var(--text-muted)}.ai-chat-input:disabled{opacity:.6}.ai-send-btn{width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--accent-primary),#9a1830);border:none;border-radius:14px;color:#fff;cursor:pointer;transition:all .2s;flex-shrink:0}.ai-send-btn:hover:not(:disabled){transform:scale(1.05)}.ai-send-btn:disabled{opacity:.5;cursor:not-allowed}.ai-send-btn .spin{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.ai-attach-btn{width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border:1px solid var(--border-medium);border-radius:14px;color:var(--text-secondary);cursor:pointer;transition:all .2s;flex-shrink:0}.ai-attach-btn:hover:not(:disabled){background:var(--bg-elevated);border-color:var(--accent-primary);color:var(--accent-primary)}.ai-attach-btn:disabled{opacity:.5;cursor:not-allowed}.ai-attachments-preview{display:flex;flex-wrap:wrap;gap:8px;padding:12px 20px;background:var(--bg-tertiary);border-top:1px solid var(--glass-border)}.attachment-chip{display:flex;align-items:center;gap:6px;padding:6px 10px;background:var(--bg-elevated);border:1px solid var(--border-medium);border-radius:8px;font-size:12px;color:var(--text-secondary)}.attachment-chip svg{color:var(--accent-primary)}.attachment-name{max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.attachment-remove{display:flex;align-items:center;justify-content:center;width:18px;height:18px;background:transparent;border:none;border-radius:50%;color:var(--text-muted);cursor:pointer;transition:all .15s;margin-left:2px}.attachment-remove:hover{background:#ef444433;color:#ef4444}.message-files{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:8px}.message-file-badge{display:inline-flex;align-items:center;gap:4px;padding:4px 8px;background:#c41e3a26;border-radius:6px;font-size:11px;color:var(--text-secondary)}.message-file-badge svg{color:var(--accent-primary)}.preferences-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .2s ease}.preferences-modal{width:560px;max-width:95vw;max-height:85vh;background:var(--bg-secondary);border:1px solid var(--border-subtle);border-radius:20px;display:flex;flex-direction:column;overflow:hidden;animation:slideUp .3s ease}.preferences-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--border-subtle)}.preferences-header h2{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:600;color:var(--text-primary)}.preferences-header .close-btn{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:8px;color:var(--text-secondary);cursor:pointer;transition:all .15s}.preferences-header .close-btn:hover{background:var(--bg-elevated);color:var(--text-primary)}.preferences-tabs{display:flex;padding:0 24px;border-bottom:1px solid var(--border-subtle);gap:4px}.pref-tab{display:flex;align-items:center;gap:8px;padding:14px 16px;background:transparent;border:none;border-bottom:2px solid transparent;color:var(--text-secondary);font-size:14px;font-weight:500;cursor:pointer;transition:all .15s;margin-bottom:-1px}.pref-tab:hover{color:var(--text-primary)}.pref-tab.active{color:var(--accent-primary);border-bottom-color:var(--accent-primary)}.preferences-content{flex:1;overflow-y:auto;padding:24px}.pref-section-intro{margin:0 0 16px;font-size:13px;line-height:1.5;color:var(--text-muted)}.pref-section h3{font-size:12px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:16px}.pref-section h3:not(:first-child){margin-top:32px}.pref-item{display:flex;align-items:center;justify-content:space-between;padding:16px;background:var(--bg-tertiary);border:1px solid var(--border-subtle);border-radius:12px;margin-bottom:12px}.pref-item.vertical{flex-direction:column;align-items:stretch;gap:16px}.pref-item.danger{border-color:#ef444433}.pref-info{display:flex;align-items:flex-start;gap:12px}.pref-info svg{flex-shrink:0;color:var(--accent-primary);margin-top:2px}.pref-info>div{display:flex;flex-direction:column;gap:2px}.pref-label{font-size:14px;font-weight:500;color:var(--text-primary)}.pref-desc{font-size:12px;color:var(--text-muted)}.pref-toggle{position:relative;width:46px;height:26px;display:inline-flex;align-items:center;padding:2px;border-radius:999px;border:1px solid var(--border-medium);background:color-mix(in srgb,var(--bg-elevated) 78%,transparent);cursor:pointer;transition:border-color .16s ease,background .16s ease;flex-shrink:0}.pref-toggle:hover{border-color:color-mix(in srgb,var(--text-muted) 45%,var(--border-medium))}.pref-toggle:focus-visible{outline:none;box-shadow:0 0 0 2px color-mix(in srgb,var(--accent-primary) 28%,transparent)}.pref-toggle.active{border-color:color-mix(in srgb,var(--accent-primary) 52%,var(--border-medium));background:color-mix(in srgb,var(--accent-primary) 20%,var(--bg-elevated))}.toggle-thumb{width:20px;height:20px;border-radius:50%;background:#ffffffeb;border:1px solid rgba(255,255,255,.28);transform:translate(0);transition:transform .18s ease,background .18s ease,border-color .18s ease;box-shadow:none}.pref-toggle.active .toggle-thumb{transform:translate(20px);background:#fffffffa;border-color:color-mix(in srgb,var(--accent-primary) 28%,rgba(255,255,255,.34))}.pref-toggle:active .toggle-thumb{transform:translate(0) scale(.97)}.pref-toggle.active:active .toggle-thumb{transform:translate(20px) scale(.97)}@media (prefers-reduced-motion: reduce){.pref-toggle,.toggle-thumb{transition:none}}.pref-btn{display:flex;align-items:center;gap:6px;padding:7px 12px;background:color-mix(in srgb,var(--bg-elevated) 92%,transparent);border:1px solid var(--border-subtle);border-radius:9px;color:var(--text-secondary);font-size:12px;font-weight:600;letter-spacing:.01em;cursor:pointer;transition:background .14s ease,border-color .14s ease,color .14s ease}.pref-btn:hover{background:color-mix(in srgb,var(--bg-tertiary) 92%,transparent);color:var(--text-primary);border-color:var(--border-medium)}.pref-btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.pref-btn.primary{background:color-mix(in srgb,var(--accent-primary) 20%,var(--bg-elevated));border-color:color-mix(in srgb,var(--accent-primary) 40%,var(--border-medium));color:color-mix(in srgb,var(--accent-primary) 76%,white)}.pref-btn.primary svg{color:#fff}.pref-btn.primary:hover{background:color-mix(in srgb,var(--accent-primary) 28%,var(--bg-elevated));border-color:color-mix(in srgb,var(--accent-primary) 56%,var(--border-medium))}.pref-btn.danger{color:color-mix(in srgb,#ef4444 88%,var(--text-primary));border-color:#ef444461}.pref-btn.danger:hover{background:#ef444417}.pref-btn.danger.confirm{background:color-mix(in srgb,#ef4444 86%,var(--bg-elevated));border-color:#ef4444;color:#fff}.pref-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.pref-status{display:inline-flex;align-items:center;height:32px;padding:0 10px;border-radius:999px;border:1px solid var(--border-subtle);background:var(--bg-elevated);color:var(--text-secondary);font-size:12px;font-weight:600;-webkit-user-select:none;user-select:none}.pref-status.good{color:#22c55e;border-color:#22c55e59;background:#22c55e1f}.pref-status.warn{color:#f59e0b;border-color:#f59e0b59;background:#f59e0b1f}.pref-note{font-size:12px;color:var(--text-muted);padding:10px 12px;border-radius:10px;background:#ffffff08;border:1px solid var(--border-subtle)}.theme-option-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(96px,1fr));gap:8px}.theme-option{text-align:left;display:flex;flex-direction:row;align-items:center;gap:8px;padding:8px 9px;min-height:36px;background:color-mix(in srgb,var(--bg-elevated) 94%,transparent);border:1px solid var(--border-subtle);border-radius:10px;color:var(--text-primary);cursor:pointer;transition:border-color .16s ease,background .16s ease,color .16s ease}.theme-option:hover{border-color:var(--border-medium);background:color-mix(in srgb,var(--bg-tertiary) 94%,transparent)}.theme-option.active{border-color:color-mix(in srgb,var(--accent-primary) 42%,var(--border-medium));background:color-mix(in srgb,var(--accent-primary) 14%,var(--bg-elevated))}.theme-option-preview{width:14px;height:14px;border-radius:999px;border:1px solid rgba(255,255,255,.38);box-shadow:none;background:var(--theme-preview);flex-shrink:0}.theme-option-name{font-size:12px;font-weight:600;letter-spacing:.01em;color:var(--text-primary);line-height:1;white-space:nowrap}.theme-option-desc{display:none}.danger-warning{font-size:12px;color:#f87171f2;margin:0;padding:10px 12px;background:#ef444414;border-radius:8px;border:1px solid rgba(239,68,68,.25)}.danger-confirm-box{margin-top:-4px;display:flex;flex-direction:column;gap:8px}.danger-confirm-input{width:100%;padding:10px 12px;border-radius:10px;border:1px solid rgba(239,68,68,.35);background:#0003;color:var(--text-primary);font-size:13px;font-family:inherit;letter-spacing:.02em}.danger-confirm-input:focus{outline:none;border-color:#ef4444b3;box-shadow:0 0 0 3px #ef444426}.goal-presets{display:flex;gap:8px;flex-wrap:wrap}.goal-preset{padding:6px 12px;background:color-mix(in srgb,var(--bg-elevated) 94%,transparent);border:1px solid var(--border-subtle);border-radius:999px;color:var(--text-secondary);font-size:12px;font-weight:600;letter-spacing:.01em;cursor:pointer;transition:border-color .14s ease,background .14s ease,color .14s ease}.goal-preset:hover{border-color:var(--border-medium);color:var(--text-primary)}.goal-preset.active{background:color-mix(in srgb,var(--accent-primary) 16%,var(--bg-elevated));border-color:color-mix(in srgb,var(--accent-primary) 40%,var(--border-medium));color:var(--text-primary)}.goal-custom{display:flex;align-items:center;gap:8px}.goal-custom input{width:80px;padding:8px 12px;background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:8px;color:var(--text-primary);font-size:14px;text-align:center}.goal-custom input:focus{outline:none;border-color:var(--accent-primary)}.goal-custom span{font-size:13px;color:var(--text-muted)}.preferences-footer{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;border-top:1px solid var(--border-subtle)}.preferences-footer .version{font-size:12px;color:var(--text-muted)}.preferences-footer .done-btn{padding:9px 18px;background:color-mix(in srgb,var(--accent-primary) 20%,var(--bg-elevated));border:1px solid color-mix(in srgb,var(--accent-primary) 38%,var(--border-medium));border-radius:9px;color:color-mix(in srgb,var(--accent-primary) 76%,white);font-size:13px;font-weight:600;letter-spacing:.01em;cursor:pointer;transition:background .14s ease,border-color .14s ease}.preferences-footer .done-btn:hover{background:color-mix(in srgb,var(--accent-primary) 28%,var(--bg-elevated));border-color:color-mix(in srgb,var(--accent-primary) 56%,var(--border-medium))}.header-nav-btn.settings{background:var(--bg-tertiary);border-color:var(--border-subtle);color:var(--text-secondary)}.header-nav-btn.settings:hover{background:var(--bg-elevated);color:var(--text-primary);border-color:var(--border-medium)}.profile-avatar-btn{transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease!important}.profile-avatar-btn:hover{transform:scale(1.08)!important;border-color:#ff525280!important;box-shadow:0 0 16px #ff525226!important}@media (max-width: 1000px){.schedule-panel{grid-template-columns:1fr;grid-template-rows:auto auto minmax(0,1fr);height:clamp(360px,58vh,560px)}.schedule-calendar{grid-column:1 / -1;grid-row:2}.schedule-tasks{grid-column:1 / -1;grid-row:3}.schedule-new-task{grid-template-columns:minmax(0,1fr) 88px 36px;grid-template-rows:auto auto;grid-template-areas:"title duration add" "course file file"}.schedule-edit-row{grid-template-columns:1fr}.schedule-month-label{min-width:0}.schedule-month{gap:6px}}.landing-container{position:fixed;top:0;right:0;bottom:0;left:0;z-index:9999;overflow-y:auto;overflow-x:hidden;background:#06060a;color:#fff;font-family:var(--font-family);scroll-behavior:smooth}.landing-particles{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:0}.landing-particle{position:absolute;border-radius:50%;background:#d6404599;animation:landingParticleFloat linear infinite}@keyframes landingParticleFloat{0%,to{transform:translateY(0) translate(0);opacity:0}10%{opacity:1}50%{transform:translateY(-120px) translate(30px)}90%{opacity:1}to{transform:translateY(-250px) translate(-20px);opacity:0}}.landing-orb{position:fixed;border-radius:50%;filter:blur(120px);pointer-events:none;z-index:0;will-change:transform}.landing-orb-1{width:600px;height:600px;top:-10%;left:-5%;background:radial-gradient(circle,rgba(214,64,69,.18) 0%,transparent 70%);animation:landingOrbFloat1 18s ease-in-out infinite alternate}.landing-orb-2{width:500px;height:500px;top:40%;right:-10%;background:radial-gradient(circle,rgba(139,21,56,.15) 0%,transparent 70%);animation:landingOrbFloat2 22s ease-in-out infinite alternate}.landing-orb-3{width:400px;height:400px;bottom:10%;left:30%;background:radial-gradient(circle,rgba(99,102,241,.12) 0%,transparent 70%);animation:landingOrbFloat3 16s ease-in-out infinite alternate}@keyframes landingOrbFloat1{0%{transform:translate(0) scale(1)}to{transform:translate(60px,40px) scale(1.1)}}@keyframes landingOrbFloat2{0%{transform:translate(0) scale(1)}to{transform:translate(-40px,-60px) scale(.9)}}@keyframes landingOrbFloat3{0%{transform:translate(0) scale(1)}to{transform:translate(30px,-30px) scale(1.15)}}.landing-nav{position:sticky;top:0;z-index:100;display:flex;align-items:center;justify-content:space-between;padding:18px 40px;background:#06060abf;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,.06)}.landing-nav-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.25rem;letter-spacing:-.5px}.landing-nav-icon{font-size:1.5rem}.landing-nav-title{background:linear-gradient(135deg,#fff 30%,#d64045);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.landing-nav-links{display:flex;gap:32px}.landing-nav-link{color:#fff9;text-decoration:none;font-size:.9rem;font-weight:500;transition:color .2s;letter-spacing:.3px}.landing-nav-link:hover{color:#fff}.landing-hero,.landing-features,.landing-vault{opacity:0;transform:translateY(30px);transition:opacity .8s cubic-bezier(.22,1,.36,1),transform .8s cubic-bezier(.22,1,.36,1)}.landing-visible{opacity:1;transform:translateY(0)}.landing-hero{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;text-align:center;padding:100px 24px 80px;max-width:900px;margin:0 auto}.landing-hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:100px;background:#d640451a;border:1px solid rgba(214,64,69,.25);color:#ff6b7a;font-size:.8rem;font-weight:600;letter-spacing:.5px;margin-bottom:32px;animation:landingBadgePulse 3s ease-in-out infinite}.landing-badge-dot{width:6px;height:6px;border-radius:50%;background:#d64045;animation:landingBadgeDot 2s ease-in-out infinite}@keyframes landingBadgePulse{0%,to{box-shadow:0 0 #d6404526}50%{box-shadow:0 0 0 8px #d6404500}}@keyframes landingBadgeDot{0%,to{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.7)}}.landing-hero-title{font-size:clamp(2.8rem,7vw,5rem);font-weight:800;line-height:1.08;letter-spacing:-2px;margin-bottom:24px}.landing-hero-line{display:block}.landing-hero-gradient{background:linear-gradient(135deg,#d64045,#ff6b7a 40%,#f59e0b,#d64045);background-size:300% 300%;-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;animation:landingGradientShift 6s ease-in-out infinite}@keyframes landingGradientShift{0%,to{background-position:0% 50%}50%{background-position:100% 50%}}.landing-hero-subtitle{font-size:1.15rem;line-height:1.7;color:#ffffff8c;max-width:600px;margin-bottom:40px}.landing-hero-cta{display:flex;gap:16px;margin-bottom:60px}.landing-btn-primary{display:inline-flex;align-items:center;gap:10px;padding:14px 32px;border-radius:14px;background:linear-gradient(135deg,#d64045,#a33438);color:#fff;font-size:1rem;font-weight:600;text-decoration:none;border:none;cursor:pointer;transition:all .3s cubic-bezier(.22,1,.36,1);box-shadow:0 4px 24px #d640454d,inset 0 1px #ffffff26;position:relative;overflow:hidden}.landing-btn-primary:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(135deg,rgba(255,255,255,.15),transparent);opacity:0;transition:opacity .3s}.landing-btn-primary:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 8px 40px #d6404573,inset 0 1px #fff3}.landing-btn-primary:hover:before{opacity:1}.landing-btn-arrow{font-size:1.2rem;transition:transform .3s}.landing-btn-primary:hover .landing-btn-arrow{transform:translate(4px)}.landing-btn-secondary{display:inline-flex;align-items:center;padding:14px 32px;border-radius:14px;background:#ffffff0f;border:1px solid rgba(255,255,255,.1);color:#fffc;font-size:1rem;font-weight:500;text-decoration:none;cursor:pointer;transition:all .3s;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.landing-btn-secondary:hover{background:#ffffff1a;border-color:#fff3;color:#fff;transform:translateY(-2px)}.landing-hero-stats{display:flex;align-items:center;gap:32px;padding:24px 40px;background:#ffffff0a;border-radius:20px;border:1px solid rgba(255,255,255,.06);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.landing-stat{display:flex;flex-direction:column;align-items:center;gap:4px}.landing-stat-number{font-size:1.5rem;font-weight:800;color:#fff}.landing-stat-label{font-size:.75rem;color:#ffffff73;font-weight:500;letter-spacing:.5px;text-transform:uppercase}.landing-stat-divider{width:1px;height:32px;background:#ffffff1a}.landing-features{position:relative;z-index:1;padding:80px 24px 100px;max-width:1200px;margin:0 auto}.landing-section-header{text-align:center;margin-bottom:60px}.landing-section-tag{display:inline-block;padding:5px 14px;border-radius:100px;background:#d640451a;border:1px solid rgba(214,64,69,.2);color:#ff6b7a;font-size:.7rem;font-weight:700;letter-spacing:2px;margin-bottom:16px}.landing-section-title{font-size:clamp(1.8rem,4vw,2.5rem);font-weight:800;letter-spacing:-1px;margin-bottom:12px}.landing-section-subtitle{font-size:1.05rem;color:#ffffff73;max-width:500px;margin:0 auto}.landing-features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.landing-feature-card{padding:32px 28px;background:#ffffff08;border:1px solid rgba(255,255,255,.06);border-radius:20px;transition:all .4s cubic-bezier(.22,1,.36,1);position:relative;overflow:hidden;animation:landingCardIn .6s ease forwards;opacity:0;transform:translateY(20px)}@keyframes landingCardIn{to{opacity:1;transform:translateY(0)}}.landing-feature-card:before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--card-gradient);opacity:0;transition:opacity .4s}.landing-feature-card:hover{background:#ffffff0f;border-color:#ffffff1f;transform:translateY(-6px);box-shadow:0 20px 60px #0000004d}.landing-feature-card:hover:before{opacity:1}.landing-feature-icon-wrapper{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:20px;box-shadow:0 4px 16px #00000040}.landing-feature-icon{font-size:1.5rem}.landing-feature-title{font-size:1.1rem;font-weight:700;margin-bottom:10px;letter-spacing:-.3px}.landing-feature-desc{font-size:.9rem;line-height:1.65;color:#ffffff73}.landing-vault{position:relative;z-index:1;padding:80px 24px 100px;max-width:700px;margin:0 auto}.landing-vault-inner{position:relative}.landing-vault-glow{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(214,64,69,.12) 0%,transparent 70%);pointer-events:none;animation:landingVaultGlow 4s ease-in-out infinite}@keyframes landingVaultGlow{0%,to{opacity:.5;transform:translate(-50%,-50%) scale(1)}50%{opacity:1;transform:translate(-50%,-50%) scale(1.15)}}.landing-vault-box{padding:48px 32px;background:#ffffff08;border:1px solid rgba(255,255,255,.08);border-radius:24px;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);text-align:center;transition:all .5s}.landing-vault-box.granted{border-color:#2d9a5c4d;background:#2d9a5c0d;box-shadow:0 0 80px #2d9a5c26}.landing-vault-box.denied{border-color:#ef44444d}.landing-vault-lock{display:flex;flex-direction:column;align-items:center;gap:16px;background:none;border:none;color:#fff;cursor:pointer;padding:20px;position:relative}.landing-lock-icon-wrapper{width:80px;height:80px;border-radius:24px;background:linear-gradient(135deg,#d6404526,#d640450d);border:1px solid rgba(214,64,69,.2);display:flex;align-items:center;justify-content:center;transition:all .4s}.landing-vault-lock:hover .landing-lock-icon-wrapper{transform:scale(1.08);background:linear-gradient(135deg,#d6404540,#d640451a);box-shadow:0 0 40px #d6404533}.landing-lock-svg{width:32px;height:32px;color:#d64045}.landing-lock-label{font-size:.9rem;color:#ffffff80;font-weight:500}.landing-lock-pulse{position:absolute;top:20px;left:50%;transform:translate(-50%);width:80px;height:80px;border-radius:24px;border:2px solid rgba(214,64,69,.3);animation:landingLockPulse 2s ease-out infinite;pointer-events:none}@keyframes landingLockPulse{0%{transform:translate(-50%) scale(1);opacity:1}to{transform:translate(-50%) scale(1.5);opacity:0}}.landing-vault-form{display:flex;flex-direction:column;align-items:center;gap:16px}.landing-vault-input-wrapper{display:flex;align-items:center;gap:12px;padding:6px 6px 6px 18px;background:#ffffff0d;border:1px solid rgba(255,255,255,.1);border-radius:16px;width:100%;max-width:420px;transition:all .3s}.landing-vault-input-wrapper:focus-within{border-color:#d6404566;box-shadow:0 0 0 4px #d6404514,0 0 30px #d640451a}.landing-vault-input-wrapper.shake{animation:landingShake .5s ease}@keyframes landingShake{0%,to{transform:translate(0)}10%,50%,90%{transform:translate(-6px)}30%,70%{transform:translate(6px)}}.landing-vault-key-icon{width:20px;height:20px;color:#ffffff4d;flex-shrink:0}.landing-vault-input{flex:1;background:none;border:none;outline:none;color:#fff;font-size:1rem;font-family:var(--font-family);padding:10px 0;letter-spacing:2px}.landing-vault-input::placeholder{color:#ffffff40;letter-spacing:0}.landing-vault-submit{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,#d64045,#a33438);border:none;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all .3s}.landing-vault-submit:hover:not(:disabled){transform:scale(1.05);box-shadow:0 4px 20px #d6404566}.landing-vault-submit:disabled{opacity:.4;cursor:not-allowed}.landing-vault-submit svg{width:20px;height:20px}.landing-vault-spinner{width:20px;height:20px;border:2px solid rgba(255,255,255,.2);border-top-color:#fff;border-radius:50%;animation:landingSpin .6s linear infinite}@keyframes landingSpin{to{transform:rotate(360deg)}}.landing-vault-error{color:#ef4444;font-size:.85rem;font-weight:500}.landing-vault-hint{color:#ffffff4d;font-size:.85rem}.landing-vault-hint em{color:#d64045b3;font-style:normal;font-weight:600}.landing-vault-granted{display:flex;flex-direction:column;align-items:center;gap:12px;padding:20px 0;animation:landingGrantedIn .6s ease}@keyframes landingGrantedIn{0%{opacity:0;transform:scale(.8)}50%{transform:scale(1.05)}to{opacity:1;transform:scale(1)}}.landing-granted-icon{width:64px;height:64px;border-radius:50%;background:linear-gradient(135deg,#2d9a5c,#10b981);display:flex;align-items:center;justify-content:center;box-shadow:0 0 40px #2d9a5c4d}.landing-granted-icon svg{width:32px;height:32px;color:#fff;animation:landingCheck .4s ease forwards}@keyframes landingCheck{0%{stroke-dasharray:0 100}to{stroke-dasharray:100 100}}.landing-granted-text{font-size:1.3rem;font-weight:800;letter-spacing:3px;color:#2d9a5c}.landing-granted-sub{font-size:.85rem;color:#fff6}.landing-waitlist{position:relative;z-index:1;padding:60px 24px 80px;max-width:600px;margin:0 auto}.landing-waitlist-inner{text-align:center}.landing-waitlist-title{font-size:1.5rem;font-weight:700;margin-bottom:12px;letter-spacing:-.5px}.landing-waitlist-desc,.landing-waitlist-success{color:#ffffff73;font-size:.95rem;margin-bottom:24px}.landing-waitlist-form{display:flex;gap:10px;max-width:420px;margin:0 auto}.landing-waitlist-input{flex:1;padding:14px 20px;background:#ffffff0d;border:1px solid rgba(255,255,255,.1);border-radius:14px;color:#fff;font-size:.95rem;font-family:var(--font-family);outline:none;transition:all .3s}.landing-waitlist-input:focus{border-color:#d6404566;box-shadow:0 0 0 4px #d6404514}.landing-waitlist-input::placeholder{color:#ffffff40}.landing-waitlist-btn{padding:14px 28px;background:linear-gradient(135deg,#d64045,#a33438);border:none;border-radius:14px;color:#fff;font-size:.95rem;font-weight:600;cursor:pointer;transition:all .3s;white-space:nowrap}.landing-waitlist-btn:hover{transform:translateY(-2px);box-shadow:0 4px 24px #d6404559}.landing-footer{position:relative;z-index:1;border-top:1px solid rgba(255,255,255,.06);padding:32px 24px}.landing-footer-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between}.landing-footer-brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:1.1rem}.landing-footer-copy{color:#ffffff4d;font-size:.8rem}@media (max-width: 900px){.landing-features-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width: 600px){.landing-nav{padding:14px 20px}.landing-hero{padding:60px 20px}.landing-hero-cta{flex-direction:column;width:100%;max-width:300px}.landing-hero-stats{flex-direction:column;gap:16px;padding:24px 20px}.landing-stat-divider{width:40px;height:1px}.landing-features-grid{grid-template-columns:1fr}.landing-waitlist-form{flex-direction:column}.landing-footer-inner{flex-direction:column;gap:12px}}.landing-container.landing-exit{animation:landingFadeOut .5s ease forwards}@keyframes landingFadeOut{to{opacity:0;transform:scale(1.02)}}html.light-mode{--light-canvas: #f6f7fb;--light-canvas-soft: #eef2f7;--light-surface: #ffffff;--light-surface-muted: #f8fafd;--light-border: rgba(15, 23, 42, .14);--light-border-soft: rgba(15, 23, 42, .08);--light-ink: #0f172a;--light-ink-secondary: rgba(15, 23, 42, .7);--light-ink-muted: rgba(15, 23, 42, .5);--light-shadow-sm: 0 1px 2px rgba(15, 23, 42, .05), 0 8px 22px rgba(15, 23, 42, .06);--light-shadow-md: 0 2px 6px rgba(15, 23, 42, .07), 0 14px 32px rgba(15, 23, 42, .08)}html.light-mode body{background:linear-gradient(180deg,#fcfdff 0%,var(--light-canvas) 45%,#f2f5fa 100%);color:var(--light-ink)}html.light-mode .app-container,html.light-mode .dashboard,html.light-mode .duo-dashboard,html.light-mode .premium-dashboard,html.light-mode .compact-content,html.light-mode .duo-main,html.light-mode .duo-sidebar{background:transparent}html.light-mode .top-bar,html.light-mode .main-header.glass-header{background:#ffffffdb;border-bottom-color:var(--light-border-soft);box-shadow:0 2px 18px #0f172a0d;backdrop-filter:blur(16px) saturate(130%);-webkit-backdrop-filter:blur(16px) saturate(130%)}html.light-mode .main-header,html.light-mode .left-sidebar,html.light-mode .right-sidebar,html.light-mode .center-panel,html.light-mode .card,html.light-mode .card-glass,html.light-mode .card-elevated,html.light-mode .duo-card,html.light-mode .analytics-card,html.light-mode .metric-card,html.light-mode .schedule-panel,html.light-mode .preferences-modal,html.light-mode .glass-modal,html.light-mode .compact-hero,html.light-mode .compact-sidebar,html.light-mode .compact-course-card,html.light-mode .compact-add-card,html.light-mode .quiz-container,html.light-mode .flashcards,html.light-mode .summary-card,html.light-mode .tip-card,html.light-mode .materials-section,html.light-mode .notes-panel,html.light-mode .doc-viewer,html.light-mode .presentation-viewer,html.light-mode .slide-content,html.light-mode .slide-notes-panel,html.light-mode .image-viewer,html.light-mode .profile-panel,html.light-mode .dashboard-sort-select,html.light-mode .courses-progress-card{background:linear-gradient(180deg,#fffffffa,#fffffff0);border-color:var(--light-border-soft);box-shadow:var(--light-shadow-sm)}html.light-mode .reorder-hint{color:#0f172a80}html.light-mode .courses-progress-circle{background:#fffffff5;border-color:var(--light-border-soft);box-shadow:var(--light-shadow-sm)}html.light-mode .courses-progress-circle-track{stroke:#0f172a24}html.light-mode .courses-progress-circle span{color:var(--light-ink)}html.light-mode .materials-create-hub,html.light-mode .materials-actions-row{background:linear-gradient(180deg,rgba(246,247,251,.98),rgba(246,247,251,.74) 70%,transparent)}html.light-mode .materials-action-btn{background:#fffffff2;border-color:var(--light-border-soft);color:var(--light-ink)}html.light-mode .materials-action-btn:hover{border-color:var(--light-border);background:#d6404514}html.light-mode .materials-create-trigger{background:linear-gradient(160deg,#fffffff2,#f8fafce6);border-color:var(--light-border-soft);color:var(--light-ink);box-shadow:var(--light-shadow-sm)}html.light-mode .materials-create-trigger:hover{border-color:var(--light-border)}html.light-mode .materials-create-trigger.open{border-color:#d6404561;box-shadow:0 10px 20px #d640451f}html.light-mode .materials-create-trigger-copy span{color:var(--light-ink-secondary)}html.light-mode .materials-create-panel{background:linear-gradient(170deg,#fffffffa,#f8fafcf5);border-color:var(--light-border-soft);box-shadow:var(--light-shadow-md)}html.light-mode .materials-create-card{background:#fffffff2;border-color:var(--light-border-soft);color:var(--light-ink)}html.light-mode .materials-create-card:hover{border-color:#d6404559;background:#d6404514}html.light-mode .materials-create-card-icon{background:#0f172a0f;color:#0f172ae0}html.light-mode .materials-create-card-copy span{color:var(--light-ink-secondary)}html.light-mode .upload-dropzone-premium{border-color:var(--light-border-soft);color:#0f172acc;background:radial-gradient(circle at 12% 10%,rgba(214,64,69,.12),transparent 44%),linear-gradient(170deg,#fffffff7,#f8fafcf2);box-shadow:var(--light-shadow-sm)}html.light-mode .upload-dropzone-premium svg{color:#0f172abd}html.light-mode .upload-dropzone-subtitle{color:var(--light-ink-secondary)}html.light-mode .materials-import-inline-btn{border-color:#0f172a33;background:#ffffffe0;color:var(--light-ink-secondary)}html.light-mode .materials-import-inline-btn:hover{border-color:#d6404561;color:var(--light-ink);background:#d640451a}html.light-mode .header,html.light-mode .pdf-toolbar,html.light-mode .pdf-nav,html.light-mode .notes-panel-header,html.light-mode .notes-filter-tabs,html.light-mode .annotation-toolbar,html.light-mode .notes-rich-header,html.light-mode .notes-rich-toolbar,html.light-mode .notes-rich-footer,html.light-mode .slide-notes-header,html.light-mode .slide-notes-footer,html.light-mode .doc-toolbar,html.light-mode .presentation-nav,html.light-mode .slide-thumbnails,html.light-mode .image-viewer-toolbar,html.light-mode .image-info,html.light-mode .spreadsheet-formula-bar,html.light-mode .sheet-ribbon,html.light-mode .sheet-tabs,html.light-mode .spreadsheet-info{background:var(--light-surface-muted);border-color:var(--light-border-soft)}html.light-mode .pdf-content,html.light-mode .doc-pages,html.light-mode .slide-container,html.light-mode .image-container,html.light-mode .spreadsheet-table-container{background:linear-gradient(180deg,var(--light-canvas-soft),#edf1f7)}html.light-mode .pdf-page-wrapper{box-shadow:0 8px 24px #0f172a1f}html.light-mode .pdf-page-wrapper.active{box-shadow:0 10px 34px #d6404529;outline-color:#d6404599}html.light-mode .pdf-page-number{background:#ffffffeb;border:1px solid var(--light-border-soft);color:var(--light-ink-secondary)}html.light-mode .glass-chip,html.light-mode .header-chip,html.light-mode .glass-icon-btn,html.light-mode .compact-action-btn,html.light-mode .view-mode-toggle button,html.light-mode .archive-toggle,html.light-mode .schedule-toggle-btn,html.light-mode .schedule-today-btn,html.light-mode .schedule-month-btn,html.light-mode .bar-back,html.light-mode .bar-stat,html.light-mode .bar-xp-track,html.light-mode .sheet-action-btn,html.light-mode .sheet-tab,html.light-mode .doc-btn,html.light-mode .doc-color-field,html.light-mode .doc-save-status,html.light-mode .color-btn,html.light-mode .nav-btn,html.light-mode .tool-btn,html.light-mode .quick-bookmark-btn,html.light-mode .notes-sidebar-add,html.light-mode .notes-tool-btn,html.light-mode .flashcards-btn,html.light-mode .flashcards-nav-btn,html.light-mode .btn-secondary,html.light-mode .btn-ghost{background:var(--light-surface);border-color:var(--light-border-soft);color:var(--light-ink-secondary)}html.light-mode .streak-chip svg{color:var(--light-ink-secondary);filter:none}html.light-mode .glass-chip:hover,html.light-mode .streak-chip:hover,html.light-mode .glass-icon-btn:hover,html.light-mode .bar-back:hover,html.light-mode .bar-stat:hover,html.light-mode .sheet-action-btn:hover,html.light-mode .sheet-tab:hover,html.light-mode .doc-btn:hover,html.light-mode .color-btn:hover,html.light-mode .nav-btn:hover:not(:disabled),html.light-mode .tool-btn:hover,html.light-mode .quick-bookmark-btn:hover,html.light-mode .notes-sidebar-add:hover,html.light-mode .notes-tool-btn:hover,html.light-mode .flashcards-btn:hover,html.light-mode .flashcards-nav-btn:hover,html.light-mode .btn-secondary:hover,html.light-mode .btn-ghost:hover{background:var(--light-surface-muted);border-color:var(--light-border);color:var(--light-ink)}html.light-mode .doc-btn.active,html.light-mode .tool-btn.active{background:#94a3b824;border-color:#94a3b84d;color:var(--light-ink)}html.light-mode .header-avatar-btn,html.light-mode .profile-avatar-btn{background:#0f0f12eb;border-color:#0f0f12eb;color:#fff}html.light-mode .header-avatar-btn span,html.light-mode .profile-avatar-btn span{color:#fff}html.light-mode .bar-title,html.light-mode .brand-text,html.light-mode .course-title,html.light-mode .summary-main-title,html.light-mode .summary-heading,html.light-mode .dashboard-section-header h2,html.light-mode .duo-section-header h2,html.light-mode .notes-rich-title .doc-name,html.light-mode .notes-rich-editor,html.light-mode .slide-notes-header h4,html.light-mode .slide-notes-textarea,html.light-mode .slide-text,html.light-mode .slide-text p:first-child,html.light-mode .slide-counter{color:var(--light-ink)}html.light-mode .summary-subtitle,html.light-mode .summary-text,html.light-mode .compact-card-meta,html.light-mode .course-stats,html.light-mode .quiz-progress-text,html.light-mode .flashcards-count,html.light-mode .dashboard-empty p,html.light-mode .compact-empty p,html.light-mode .bar-xp-text,html.light-mode .slide-notes-status,html.light-mode .slide-notes-footer,html.light-mode .slide-number,html.light-mode .slide-empty,html.light-mode .notes-rich-status,html.light-mode .notes-rich-footer .word-count,html.light-mode .notes-rich-footer .mode-hint,html.light-mode .sheet-count,html.light-mode .zoom-level,html.light-mode .page-separator,html.light-mode .total-pages,html.light-mode .doc-save-status{color:var(--light-ink-secondary)}html.light-mode .doc-toolbar-label{color:var(--light-ink-muted)}html.light-mode .doc-toolbar-divider{background:#0f172a14}html.light-mode .bar-sep,html.light-mode .day-number,html.light-mode .brand-subtext,html.light-mode .current-page-label{color:var(--light-ink-muted)}html.light-mode .btn,html.light-mode .glass-btn-ghost,html.light-mode .glass-btn-primary,html.light-mode .duo-btn,html.light-mode .duo-btn-ghost,html.light-mode .pdf-reupload-btn{border-color:var(--light-border-soft)}html.light-mode .quiz-option{background:var(--light-surface);border-color:var(--light-border-soft)}html.light-mode .quiz-option:hover{background:#d6404514;border-color:#d6404547}html.light-mode .quiz-option.selected{background:#d6404521;border-color:#d640455c}html.light-mode .quiz-option.correct{background:#22c55e1f;border-color:#22c55e4d}html.light-mode .quiz-option.incorrect{background:#ef44441f;border-color:#ef44444d}html.light-mode .quiz-option-number{background:var(--light-surface-muted);border:1px solid var(--light-border-soft);color:var(--light-ink-secondary)}html.light-mode .sidebar-tab.locked{border-color:transparent;background:transparent}html.light-mode .sidebar-tab.active,html.light-mode .sidebar-tab.locked.active{color:var(--light-ink);background:var(--light-surface);border-color:var(--light-border)}html.light-mode .sidebar-tab.locked:hover{color:var(--light-ink);border-color:var(--light-border-soft)}html.light-mode .sidebar-tab-soon{color:var(--light-ink-secondary);background:var(--light-surface-muted);border-color:var(--light-border-soft)}html.light-mode .coming-soon-panel-header{border-bottom-color:#0f172a1f;background:#ffffffeb}html.light-mode .coming-soon-panel-header h3{color:#0f172ae6}html.light-mode .coming-soon-panel-pill{color:#78350ff2;border-color:#d9770673;background:#fbbf243d}html.light-mode .coming-soon-fomo{color:#78350ff5;border-color:#d977065c;background:#fbbf2438}html.light-mode .sidebar-topbar{background:transparent}html.light-mode .sidebar-collapse-btn{background:var(--light-surface);border-color:var(--light-border-soft);color:var(--light-ink-secondary)}html.light-mode .sidebar-collapse-btn:hover{background:var(--light-surface-muted);border-color:var(--light-border);color:var(--light-ink)}html.light-mode .coming-soon-preview-card{background:linear-gradient(170deg,#fffffff5,#f8fafce6);border-color:#0f172a24;box-shadow:0 14px 30px #0f172a1f}html.light-mode .coming-soon-preview-chip{color:#fffffff5;border-color:#d640456b;background:#d64045c7}html.light-mode .coming-soon-preview-line{color:#0f172ad9;border-color:#0f172a1f;background:#ffffffd1}html.light-mode .flashcard{border-color:var(--light-border-soft);background:radial-gradient(900px 380px at 50% -40%,#d640451c,#fffffffa);box-shadow:var(--light-shadow-md)}html.light-mode .flashcard-label{color:var(--light-ink-muted)}html.light-mode .flashcard-text{color:var(--light-ink)}html.light-mode .schedule-day,html.light-mode .schedule-task,html.light-mode .summary-bullet-item,html.light-mode .note-card,html.light-mode .pref-note{background:var(--light-surface);border-color:var(--light-border-soft)}html.light-mode .pref-section-intro{color:var(--light-ink-secondary)}html.light-mode .danger-warning{color:#b91c1ceb;background:#ef444414;border-color:#ef444442}html.light-mode .danger-confirm-input{background:#fff;border-color:#ef444459;color:var(--light-ink)}html.light-mode .schedule-day.today{box-shadow:inset 0 0 0 1px #d640458c}html.light-mode .schedule-task.done{border-color:#94a3b859;background:#94a3b824}html.light-mode .schedule-task.done .schedule-task-title{color:var(--light-ink-secondary);text-decoration-color:#64748b8c}html.light-mode .context-menu,html.light-mode .color-picker,html.light-mode .note-input-popup,html.light-mode .notes-sidebar{background:#fffffff5;border-color:var(--light-border);box-shadow:var(--light-shadow-md)}html.light-mode .schedule-new-task input,html.light-mode .schedule-new-task select,html.light-mode .schedule-search input,html.light-mode .glass-field input,html.light-mode .modal-field input[type=text],html.light-mode .duo-modal-field input[type=text],html.light-mode .pdf-page-input,html.light-mode textarea,html.light-mode .sheet-formula-input,html.light-mode .doc-select,html.light-mode .sheet-cell-ref,html.light-mode .sheet-formula-fx,html.light-mode .add-bookmark-form input,html.light-mode .inline-text-editor input,html.light-mode .note-input-popup textarea,html.light-mode .rename-input{background:#fff;border-color:var(--light-border);color:var(--light-ink)}html.light-mode .inline-text-editor input{border:1px solid var(--light-border);border-bottom:2px solid rgba(214,64,69,.45);border-radius:10px;padding:8px 10px}html.light-mode .schedule-new-task input:focus,html.light-mode .schedule-new-task select:focus,html.light-mode .schedule-search input:focus,html.light-mode .glass-field input:focus,html.light-mode .modal-field input[type=text]:focus,html.light-mode .duo-modal-field input[type=text]:focus,html.light-mode .pdf-page-input:focus,html.light-mode textarea:focus,html.light-mode .sheet-formula-input:focus,html.light-mode .doc-select:focus,html.light-mode .add-bookmark-form input:focus,html.light-mode .inline-text-editor input:focus,html.light-mode .note-input-popup textarea:focus,html.light-mode .rename-input:focus{outline:none;border-color:#d6404573;box-shadow:0 0 0 3px #d640451f}html.light-mode .schedule-new-task input::placeholder,html.light-mode .schedule-search input::placeholder,html.light-mode .glass-field input::placeholder,html.light-mode .modal-field input[type=text]::placeholder,html.light-mode .duo-modal-field input[type=text]::placeholder,html.light-mode .pdf-page-input::placeholder,html.light-mode textarea::placeholder{color:#0f172a6b}html.light-mode .color-btn{color:var(--light-ink)}html.light-mode .color-option{border-color:#0f172a14}html.light-mode .color-option.active{border-color:#0f172ab8;box-shadow:0 0 0 2px #94a3b833}html.light-mode .doc-page.active{box-shadow:0 14px 34px #0f172a1f;border-color:#94a3b861}html.light-mode .doc-page-body:focus{caret-color:#475569}html.light-mode .notes-rich-editor h1,html.light-mode .notes-rich-editor h2,html.light-mode .notes-rich-editor h3,html.light-mode .notes-rich-editor h4,html.light-mode .notes-rich-editor th{color:#0b1324}html.light-mode .notes-rich-editor blockquote{color:var(--light-ink-secondary)}html.light-mode .notes-rich-editor pre,html.light-mode .notes-rich-editor code,html.light-mode .claude-notes-editor pre,html.light-mode .claude-notes-editor code{background:#0f172a0d;border-color:var(--light-border-soft);color:#111827}html.light-mode .sheet-tab.active{background:#fff;border-color:#16a34a;color:#166534}html.light-mode .sheet-ribbon-status{background:#fff;border-color:var(--light-border-soft);color:var(--light-ink-secondary)}html.light-mode .sheet-ribbon-status.saving{background:#16a34a1a;border-color:#16a34a4d;color:#166534}html.light-mode .spreadsheet-table th,html.light-mode .spreadsheet-table .row-number{background:#f7f9fc;color:#3b475d}html.light-mode .spreadsheet-table td{background:#fff;color:#111827}html.light-mode .spreadsheet-table td.sheet-cell.active{box-shadow:inset 0 0 0 2px #16a34a}html.light-mode .compact-course-card:before{opacity:.05}html.light-mode .compact-course-card:hover{box-shadow:var(--light-shadow-md)}html.light-mode .glass-modal-overlay,html.light-mode .duo-modal-overlay{background:#0f172a47}html.light-mode .course-create-modal{background:linear-gradient(180deg,#fffffffc,#f8fafcf5);border-color:var(--light-border-soft)}html.light-mode .course-create-kicker,html.light-mode .course-create-subtitle,html.light-mode .course-creator-hint,html.light-mode .course-create-field-top span,html.light-mode .course-create-preview-copy span,html.light-mode .course-create-name-field label{color:#0f172a94}html.light-mode .glass-add-btn.course-creator-trigger{background:#ffffffeb;border-color:var(--light-border-soft);color:var(--light-ink)}html.light-mode .glass-add-btn.course-creator-trigger:hover{background:#f8fafcfa;border-color:var(--light-border)}html.light-mode .course-creator-shell.embedded,html.light-mode .course-creator-toggle,html.light-mode .course-import-dropzone{background:#ffffffe6;border-color:var(--light-border-soft)}html.light-mode .course-creator-toggle button{color:#0f172a9e}html.light-mode .course-creator-toggle button.active{background:#0f172a14;color:var(--light-ink)}html.light-mode .course-import-dropzone strong,html.light-mode .course-import-dropzone svg,html.light-mode .course-import-browse{color:var(--light-ink)}html.light-mode .course-import-browse{background:var(--light-surface);border-color:var(--light-border-soft)}html.light-mode .course-import-error{color:#b91c1c}html.light-mode .course-create-preview{border-color:var(--light-border-soft);background:#ffffffeb;box-shadow:inset 0 0 0 1px #0f172a0a}html.light-mode .course-create-preview-icon{background:color-mix(in srgb,var(--course-create-accent),#f8fafc 72%)}html.light-mode .course-create-preview-copy strong{color:var(--light-ink)}html.light-mode .course-create-icon-btn{background:var(--light-surface);border-color:var(--light-border-soft)}html.light-mode .course-create-icon-btn:hover{background:var(--light-surface-muted);border-color:var(--light-border)}html.light-mode .course-create-color-btn.selected{box-shadow:0 0 0 2px #fff}.quick-start-launcher{position:fixed;right:24px;bottom:24px;z-index:1100;display:inline-flex;align-items:center;gap:12px;padding:12px 14px;border-radius:14px;border:1px solid rgba(255,255,255,.14);background:linear-gradient(145deg,#131e32eb,#0a0e18eb);box-shadow:0 14px 36px #05080e80;color:#f7fafff0;cursor:pointer;text-align:left}.quick-start-launcher:focus-visible{outline:2px solid rgba(56,189,248,.85);outline-offset:2px}.quick-start-launcher-icon{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(135deg,#2dd4bf66,#3b82f661);color:#dff7ff}.quick-start-launcher-text{display:flex;flex-direction:column;min-width:0}.quick-start-launcher-text strong{font-size:13px;line-height:1.2;letter-spacing:.01em}.quick-start-launcher-text small{font-size:11px;color:#e2e8f0bd;line-height:1.3}.quick-start-launcher-count{min-width:28px;height:28px;border-radius:999px;display:grid;place-items:center;background:#082f49d9;border:1px solid rgba(56,189,248,.5);color:#7dd3fc;font-size:12px;font-weight:700}.quick-start-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:9999;display:flex;align-items:center;justify-content:center;padding:22px;background:radial-gradient(circle at 50% 0%,rgba(239,68,68,.12),transparent 45%),#020305d6;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.quick-start-mel-badge{display:inline-flex;align-items:center;padding:6px 12px;border-radius:999px;border:1px solid rgba(252,165,165,.38);background:#ef444424;color:#fecaca;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;margin-bottom:14px}.quick-start-neuro-card{width:min(560px,100%);border-radius:20px;padding:22px 22px 20px;border:1px solid rgba(255,255,255,.1);background:linear-gradient(155deg,#0f172af0,#080d18f2);box-shadow:0 24px 58px #03080f99;position:relative}.quick-start-neuro-card.is-countdown{width:min(500px,100%);text-align:center}.quick-start-close{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid rgba(148,163,184,.4);background:#0f172aa6;color:#e2e8f0e6;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;cursor:pointer}.quick-start-close:hover{background:#1e293bf2;color:#fff}.quick-start-headline{display:flex;align-items:center;gap:10px;color:#e2e8f0;margin-bottom:14px}.quick-start-headline h3{font-size:17px;line-height:1.35;margin:0;font-weight:620}.quick-start-action-list{display:grid;gap:9px}.quick-start-action-chip{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid rgba(56,189,248,.18);background:#0f172ab3;color:#cbd5e1;padding:12px;border-radius:11px;text-align:left;font-size:14px;line-height:1.34;cursor:pointer;transition:border-color .18s ease,background .18s ease,transform .18s ease}.quick-start-action-chip:hover{border-color:#38bdf880;background:#082f4980}.quick-start-action-chip.active{border-color:#22d3eecc;background:#082f49bf;color:#e0f2fe}.quick-start-custom-label{display:block;margin-top:14px;margin-bottom:7px;font-size:12px;color:#94a3b8e6}.quick-start-custom-input{width:100%;border-radius:10px;border:1px solid rgba(56,189,248,.25);background:#080d18cc;color:#f8fafc;font-size:14px;padding:11px 12px}.quick-start-custom-input:focus{outline:none;border-color:#22d3eed9;box-shadow:0 0 0 3px #06b6d433}.quick-start-launch-btn{width:100%;margin-top:14px;border-radius:11px;border:none;padding:12px 16px;background:linear-gradient(135deg,#06b6d4,#2563eb);color:#f8fafc;font-size:14px;font-weight:650;letter-spacing:.01em;cursor:pointer}.quick-start-launch-btn:hover{filter:brightness(1.06)}.quick-start-countdown-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.quick-start-badge{display:inline-flex;align-items:center;border-radius:999px;padding:6px 10px;border:1px solid rgba(45,212,191,.35);background:#0d948826;color:#ccfbf1;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.06em}.quick-start-number{font-size:clamp(96px,28vw,146px);line-height:.9;font-weight:860;font-family:JetBrains Mono,ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:-.04em;color:#67e8f9;text-shadow:0 0 22px rgba(6,182,212,.4);margin-top:12px}.quick-start-cue{margin-top:8px}.quick-start-cue p{margin:0;font-size:20px;font-weight:680;color:#f8fafc;line-height:1.25}.quick-start-cue small{display:block;margin-top:5px;color:#94a3b8;font-size:13px;line-height:1.4}.quick-start-action-pill{margin-top:14px;margin-left:auto;margin-right:auto;width:fit-content;max-width:100%;border:1px solid rgba(148,163,184,.36);border-radius:999px;padding:8px 12px;color:#e2e8f0;font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.quick-start-progress{margin-top:14px;height:7px;width:100%;border-radius:999px;background:#47556970;overflow:hidden}.quick-start-progress span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,#2dd4bf,#38bdf8 52%,#22c55e);transition:width .22s linear}.quick-start-session-fab.neuro{position:fixed;right:24px;bottom:24px;z-index:1100;min-width:270px;max-width:min(320px,calc(100vw - 24px));padding:14px;border-radius:16px;border:1px solid rgba(148,163,184,.22);background:linear-gradient(150deg,#0a1220f0,#050911f2);box-shadow:0 18px 42px #03070e8c;display:flex;flex-direction:column;align-items:center;gap:10px}.quick-start-session-fab.neuro .session-timer-ring{width:88px;height:88px;margin:0}.quick-start-session-fab.neuro .session-track{stroke:#64748b66;stroke-width:8}.quick-start-session-fab.neuro .session-progress{stroke:#22d3ee;stroke-width:8;stroke-linecap:round;transition:stroke-dashoffset 1s linear}.quick-start-session-fab.neuro .session-time{font-size:21px;color:#ecfeff;font-weight:700}.quick-start-sprint-action{margin:0;width:100%;text-align:center;font-size:12px;color:#cbd5e1;line-height:1.35;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.quick-start-sprint-actions{display:flex;width:100%;gap:8px}.quick-start-sprint-actions .session-complete-btn{flex:1;justify-content:center;border-radius:10px;font-size:12px;padding:9px 8px}.quick-start-sprint-actions .session-complete-btn.success{background:linear-gradient(135deg,#22c55e,#16a34a);border-color:#4ade8099;color:#f0fdf4}.quick-start-sprint-actions .session-complete-btn.subtle{background:#0f172a8c;border-color:#94a3b859;color:#cbd5e1}.quick-start-sprint-actions .session-complete-btn.subtle:hover{background:#1e293bbf}@media (max-width: 768px){.quick-start-launcher{right:12px;left:12px;bottom:12px}.quick-start-neuro-card{border-radius:16px;padding:16px}.quick-start-headline h3{font-size:15px}.quick-start-cue p{font-size:17px}.quick-start-session-fab.neuro{left:12px;right:12px;bottom:12px;max-width:none;min-width:0}}html.light-mode .quick-start-launcher{border-color:#0f172a1f;background:linear-gradient(145deg,#f8fafcfa,#eef2f7fa);color:#0f172a;box-shadow:0 14px 36px #0f172a33}html.light-mode .quick-start-launcher-text small{color:#475569}html.light-mode .quick-start-overlay{background:radial-gradient(circle at 20% 10%,rgba(125,211,252,.35),transparent 55%),#0f172a47}html.light-mode .pdf-item-pages{border-color:#94a3b873;background:#f1f5f9f5;color:#334155}.vault-setup-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1600;display:flex;align-items:center;justify-content:center;padding:24px;background:#0206179e;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.vault-setup-modal{position:relative;width:min(640px,100%);border-radius:28px;border:1px solid rgba(148,163,184,.18);background:radial-gradient(circle at top right,rgba(59,130,246,.18),transparent 34%),linear-gradient(180deg,#0f172afa,#020617fa);box-shadow:0 32px 80px #0f172a7a;padding:28px;color:#e2e8f0}.vault-setup-close{position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:999px;border:1px solid rgba(148,163,184,.18);background:#0f172a9e;color:inherit;display:inline-flex;align-items:center;justify-content:center}.vault-setup-hero{display:flex;gap:16px;align-items:flex-start;margin-bottom:20px}.vault-setup-icon{flex-shrink:0;width:48px;height:48px;border-radius:16px;display:inline-flex;align-items:center;justify-content:center;color:#dbeafe;background:linear-gradient(135deg,#3b82f642,#0ea5e92e);border:1px solid rgba(96,165,250,.22)}.vault-setup-hero h2{margin:0 0 8px;font-size:24px}.vault-setup-hero p,.vault-setup-step p{margin:0;color:#e2e8f0c7;line-height:1.55}.vault-setup-benefits,.vault-setup-steps{display:grid;gap:12px;margin-bottom:18px}.vault-setup-benefit,.vault-setup-step{display:flex;gap:12px;align-items:flex-start;padding:14px 16px;border-radius:18px;background:#0f172a85;border:1px solid rgba(148,163,184,.12)}.vault-setup-benefit svg{flex-shrink:0;margin-top:2px;color:#93c5fd}.vault-setup-step-number{flex-shrink:0;width:28px;height:28px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;background:#3b82f62e;color:#dbeafe;font-weight:700}.vault-setup-step strong{display:block;margin-bottom:4px}.vault-setup-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:8px}.vault-setup-btn{min-height:44px;border-radius:14px;padding:0 16px;border:1px solid rgba(148,163,184,.2);display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600}.vault-setup-btn.secondary{background:#0f172a8a;color:#e2e8f0}.vault-setup-btn.primary{background:linear-gradient(135deg,#2563eb,#0ea5e9);color:#fff;border-color:#7dd3fc66}.vault-setup-btn:disabled,.vault-setup-close:disabled{opacity:.7;cursor:not-allowed}@media (max-width: 640px){.vault-setup-overlay{padding:14px}.vault-setup-modal{padding:22px 18px;border-radius:22px}.vault-setup-hero{flex-direction:column}.vault-setup-actions{flex-direction:column-reverse}.vault-setup-btn{width:100%}}html.light-mode .vault-setup-overlay{background:#94a3b83d}html.light-mode .vault-setup-modal{color:#0f172a;background:radial-gradient(circle at top right,rgba(96,165,250,.18),transparent 34%),linear-gradient(180deg,#fffffffa,#f8fafcfa);border-color:#94a3b838}html.light-mode .vault-setup-close,html.light-mode .vault-setup-benefit,html.light-mode .vault-setup-step,html.light-mode .vault-setup-btn.secondary{background:#ffffffe6;color:#0f172a}html.light-mode .vault-setup-hero p,html.light-mode .vault-setup-step p{color:#475569}.qs-fab{position:fixed;right:20px;bottom:20px;display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 14px;border:1px solid var(--border-subtle);border-radius:999px;background:color-mix(in srgb,var(--bg-primary) 88%,black 12%);color:var(--text-primary);cursor:pointer;z-index:1100;font-size:13px;font-weight:600;box-shadow:0 8px 20px #0000002e;transition:transform .18s ease,border-color .18s ease}.qs-fab:hover{transform:translateY(-1px);border-color:var(--border-strong)}.qs-fab:focus-visible,.qs-close:focus-visible,.qs-done:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px}.qs-fab-count{min-width:22px;height:22px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;padding:0 6px;border:1px solid var(--border-subtle);font-size:11px;line-height:1;color:var(--text-muted)}.qs-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1200;display:flex;align-items:center;justify-content:center;background:#0000008f;padding:16px}.qs-card{width:min(360px,100%);position:relative;background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:14px;padding:24px;text-align:center;box-shadow:0 18px 44px #00000059}.qs-close{position:absolute;right:10px;top:10px;width:32px;height:32px;border-radius:8px;border:1px solid var(--border-subtle);background:transparent;color:var(--text-muted);cursor:pointer;display:inline-flex;align-items:center;justify-content:center}.qs-label{margin:0 0 10px;font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted)}.qs-count{font-size:clamp(54px,12vw,76px);line-height:1;margin:0;font-weight:700;font-variant-numeric:tabular-nums;color:var(--text-primary)}.qs-hint{margin:8px 0 0;color:var(--text-secondary);font-size:14px}.qs-session{position:fixed;right:20px;bottom:20px;z-index:1100;width:min(280px,calc(100vw - 24px));border:1px solid var(--border-subtle);border-radius:14px;background:var(--bg-elevated);padding:14px;box-shadow:0 10px 24px #00000038}.qs-session-label{margin:0;font-size:12px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.08em}.qs-session-time{margin-top:6px;font-size:28px;font-weight:700;color:var(--text-primary);font-variant-numeric:tabular-nums}.qs-done{margin-top:10px;width:100%;height:38px;border-radius:10px;border:1px solid var(--border-subtle);background:var(--bg-primary);color:var(--text-primary);font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer}@media (max-width: 640px){.qs-fab,.qs-session{right:12px;bottom:12px}}.noise-control-wrap{position:relative}.noise-popover{position:absolute;right:0;top:calc(100% + 10px);width:240px;padding:10px;border-radius:12px;border:1px solid var(--border-subtle);background:var(--bg-secondary);box-shadow:0 14px 40px #00000059;z-index:30}.noise-popover-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;font-size:12px;font-weight:700;color:var(--text-primary)}.noise-play-btn{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--border-subtle);background:var(--bg-tertiary);color:var(--text-secondary);border-radius:8px;padding:5px 8px;cursor:pointer;font-size:11px}.noise-types{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;margin-bottom:8px}.noise-type-btn{border:1px solid var(--border-subtle);background:var(--bg-tertiary);color:var(--text-secondary);border-radius:8px;padding:6px 0;font-size:11px;text-transform:capitalize;cursor:pointer}.noise-type-btn.active{border-color:#c41e3a80;background:#c41e3a2e;color:var(--text-primary)}.noise-volume-row{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:8px;font-size:11px;color:var(--text-secondary)}.noise-volume-row input[type=range]{width:100%}.study-chat-shell{flex:1;min-height:0;display:flex;flex-direction:column;gap:12px}.study-chat-header{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 14px;border:1px solid var(--border-subtle);border-radius:16px;background:linear-gradient(180deg,color-mix(in srgb,var(--accent-primary) 10%,var(--bg-secondary)),var(--bg-secondary))}.study-chat-title{display:flex;align-items:center;gap:10px;min-width:0}.study-chat-badge{width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;border-radius:11px;flex-shrink:0;color:#fff;background:linear-gradient(135deg,var(--accent-primary),color-mix(in srgb,var(--accent-primary) 68%,white))}.study-chat-title h3{margin:0;font-size:15px;color:var(--text-primary)}.study-chat-title p{margin:2px 0 0;font-size:11px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.study-chat-reset{width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;border:1px solid var(--border-subtle);background:var(--bg-tertiary);color:var(--text-secondary);cursor:pointer;transition:all .16s ease}.study-chat-reset:hover:not(:disabled){border-color:var(--border-medium);color:var(--text-primary);background:var(--bg-elevated)}.study-chat-reset:disabled{opacity:.5;cursor:not-allowed}.study-chat-messages{flex:1;min-height:260px;overflow-y:auto;display:flex;flex-direction:column;gap:12px;padding-right:4px}.study-chat-empty{min-height:220px;border:1px dashed var(--border-subtle);border-radius:16px;display:grid;place-items:center;text-align:center;padding:18px}.study-chat-empty-icon{width:48px;height:48px;display:inline-flex;align-items:center;justify-content:center;border-radius:14px;margin:0 auto 10px;color:var(--accent-primary);background:color-mix(in srgb,var(--accent-primary) 14%,transparent)}.study-chat-empty h4{margin:0 0 6px;font-size:16px}.study-chat-empty p{margin:0;color:var(--text-secondary);font-size:13px;line-height:1.5}.study-chat-message{display:flex;gap:10px;max-width:96%}.study-chat-message.user{align-self:flex-end;flex-direction:row-reverse}.study-chat-message.assistant,.study-chat-message.error{align-self:flex-start}.study-chat-avatar{width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;flex-shrink:0;background:linear-gradient(135deg,var(--accent-primary),color-mix(in srgb,var(--accent-primary) 70%,white));color:#fff}.study-chat-message.user .study-chat-avatar{background:linear-gradient(135deg,#5b88ff,#3764f5)}.study-chat-message-body{display:flex;flex-direction:column;gap:8px;min-width:0}.study-chat-bubble{max-width:100%;padding:12px 14px;border-radius:16px;border:1px solid var(--border-subtle);background:var(--bg-secondary);color:var(--text-primary)}.study-chat-message.user .study-chat-bubble{border-color:#5b88ff52;background:linear-gradient(135deg,#5b88ff33,#3764f52e)}.study-chat-message.error .study-chat-bubble{border-color:#ef44444d;background:#ef444414}.study-chat-plain,.study-chat-markdown p,.study-chat-markdown li{font-size:13px;line-height:1.55}.study-chat-markdown p,.study-chat-markdown ul,.study-chat-markdown ol{margin:0 0 8px}.study-chat-markdown p:last-child,.study-chat-markdown ul:last-child,.study-chat-markdown ol:last-child{margin-bottom:0}.study-chat-markdown ul,.study-chat-markdown ol{padding-left:18px}.study-chat-followups,.study-chat-prompts{display:flex;flex-wrap:wrap;gap:8px}.study-chat-followup-btn,.study-chat-prompt-chip{border:1px solid var(--border-subtle);background:var(--bg-tertiary);color:var(--text-secondary);border-radius:999px;padding:7px 10px;font-size:11px;font-weight:600;cursor:pointer;transition:all .16s ease}.study-chat-followup-btn:hover:not(:disabled),.study-chat-prompt-chip:hover:not(:disabled){border-color:color-mix(in srgb,var(--accent-primary) 45%,var(--border-medium));color:var(--text-primary);background:color-mix(in srgb,var(--accent-primary) 11%,var(--bg-tertiary))}.study-chat-followup-btn:disabled,.study-chat-prompt-chip:disabled{opacity:.5;cursor:not-allowed}.study-chat-input-row{display:grid;grid-template-columns:minmax(0,1fr) 42px;gap:10px;align-items:end}.study-chat-input{min-height:74px;max-height:140px;resize:vertical;padding:12px 14px;border-radius:14px;border:1px solid var(--border-subtle);background:var(--bg-secondary);color:var(--text-primary);font:inherit;line-height:1.45}.study-chat-input:focus{outline:none;border-color:color-mix(in srgb,var(--accent-primary) 48%,var(--border-medium))}.study-chat-input::placeholder{color:var(--text-muted)}.study-chat-input:disabled{opacity:.6}.study-chat-send{width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;border:none;border-radius:12px;background:linear-gradient(135deg,var(--accent-primary),color-mix(in srgb,var(--accent-primary) 72%,white));color:#fff;cursor:pointer;transition:transform .16s ease,opacity .16s ease}.study-chat-send:hover:not(:disabled){transform:translateY(-1px)}.study-chat-send:disabled{opacity:.5;cursor:not-allowed}.study-chat-typing{display:inline-flex;gap:6px;align-items:center}.study-chat-typing span{width:7px;height:7px;border-radius:999px;background:var(--text-muted);animation:typing 1.4s infinite}.study-chat-typing span:nth-child(2){animation-delay:.2s}.study-chat-typing span:nth-child(3){animation-delay:.4s}.summary-shell{display:flex;flex-direction:column;gap:12px}.summary-toolbar{display:flex;align-items:center;justify-content:space-between;gap:8px}.summary-kicker{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:800;color:var(--accent-primary);letter-spacing:.4px}.summary-toolbar-actions{display:inline-flex;align-items:center;gap:6px}.summary-hero{border:1px solid var(--border-subtle);border-radius:14px;padding:12px;background:var(--bg-secondary)}.summary-hero h2{margin:0;font-size:18px;line-height:1.25}.summary-meta-row{margin-top:10px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}.summary-meta-pill{display:inline-flex;align-items:center;gap:5px;font-size:11px;color:var(--text-secondary);border:1px solid var(--border-subtle);border-radius:999px;padding:4px 8px;background:var(--bg-tertiary)}.summary-terms-row{display:flex;flex-wrap:wrap;gap:6px}.summary-term-pill{font-size:11px;border-radius:999px;padding:4px 9px;border:1px solid var(--border-subtle);color:var(--text-secondary);background:var(--bg-tertiary)}.summary-sections{display:flex;flex-direction:column;gap:10px}.summary-section-card{border:1px solid var(--border-subtle);border-radius:12px;padding:12px;background:var(--bg-secondary)}.summary-section-card h3{margin:0 0 8px;font-size:14px}.summary-markdown p{margin:0 0 8px;color:var(--text-secondary);line-height:1.5}.summary-markdown p:last-child{margin-bottom:0}.summary-markdown ul,.summary-markdown ol{margin:0 0 8px 18px;padding:0}.summary-markdown li{margin-bottom:6px;color:var(--text-secondary)}.summary-empty-shell{min-height:300px;border:1px dashed var(--border-subtle);border-radius:14px;display:grid;place-items:center;text-align:center;padding:20px;gap:8px}.summary-empty-shell h3{margin:0}.summary-empty-shell p{margin:0;color:var(--text-secondary);font-size:13px}.summary-empty-icon{font-size:34px}.summary-copy-btn.copied{color:var(--accent-success, #2d9a5c)}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.skeleton-line,.skeleton-pill,.skeleton-icon-btn{background:linear-gradient(90deg,var(--bg-elevated) 25%,rgba(255,255,255,.06) 50%,var(--bg-elevated) 75%);background-size:200% 100%;animation:shimmer 1.6s ease-in-out infinite;border-radius:6px}.skeleton-line{height:12px;width:100%}.skeleton-pill{height:22px;border-radius:999px}.skeleton-icon-btn{width:32px;height:32px;border-radius:8px;flex-shrink:0}.summary-skeleton{display:flex;flex-direction:column;gap:12px;padding:0}.summary-skeleton-toolbar{display:flex;align-items:center;justify-content:space-between;gap:8px}.summary-skeleton-hero{border:1px solid var(--border-subtle);border-radius:14px;padding:14px;background:var(--bg-secondary)}.summary-skeleton-card{border:1px solid var(--border-subtle);border-radius:12px;padding:14px;background:var(--bg-secondary);display:flex;flex-direction:column;gap:0}.quiz-empty-shell{min-height:300px;border:1px dashed var(--border-subtle);border-radius:14px;display:grid;place-items:center;text-align:center;padding:20px;gap:8px}.quiz-empty-shell h3{margin:0}.quiz-empty-shell p{margin:0;color:var(--text-secondary);font-size:13px}.quiz-empty-icon{font-size:34px}.quiz-result-shell{display:flex;flex-direction:column;gap:16px}.quiz-result-hero{border:1px solid var(--border-subtle);border-radius:16px;padding:28px 20px;background:var(--bg-secondary);text-align:center;display:flex;flex-direction:column;align-items:center;gap:6px}.quiz-result-emoji{font-size:44px;line-height:1;margin-bottom:4px}.quiz-result-headline{font-size:18px;font-weight:700;color:var(--text-primary)}.quiz-result-grade{font-size:12px;font-weight:600;color:var(--accent-primary);text-transform:uppercase;letter-spacing:.5px}.quiz-result-score{display:flex;align-items:baseline;gap:4px;margin-top:8px}.quiz-score-num{font-size:32px;font-weight:800;color:var(--text-primary)}.quiz-score-sep{font-size:18px;color:var(--text-secondary)}.quiz-score-pct{font-size:14px;color:var(--text-muted)}.quiz-result-actions{display:flex;gap:8px}.quiz-result-actions .btn{flex:1}.quiz-container{display:flex;flex-direction:column;gap:10px}.quiz-lives-row{font-size:14px;letter-spacing:2px}.quiz-progress-track{height:3px;background:var(--border-subtle);border-radius:999px;overflow:hidden}.quiz-q-num{font-size:16px;font-weight:700;color:var(--text-primary)}.quiz-q-sep{font-size:13px;color:var(--text-muted)}.quiz-feedback{border-radius:10px;padding:10px 12px;border:1px solid transparent}.quiz-feedback.correct{background:#22c55e1f;border-color:#22c55e59}.quiz-feedback.incorrect{background:#ef44441f;border-color:#ef444459}.quiz-feedback-title{font-size:13px;font-weight:700}.quiz-feedback.correct .quiz-feedback-title{color:#22c55e}.quiz-feedback.incorrect .quiz-feedback-title{color:#ef4444}.quiz-feedback-explanation{margin:5px 0 0;font-size:12px;color:var(--text-secondary);line-height:1.5}.quiz-footer-actions{display:flex;gap:8px}.quiz-footer-actions .btn:last-child{flex:1}.quiz-keyboard-hint{text-align:center;font-size:11px;color:var(--text-muted);padding-top:2px}.quiz-option-icon{flex-shrink:0;margin-left:auto}.quiz-option-icon.correct-icon{color:#22c55e}.quiz-option-icon.incorrect-icon{color:#ef4444}.left-sidebar{background:radial-gradient(circle at 50% 0%,rgba(145,116,126,.08),transparent 28%),linear-gradient(180deg,#0a0a0cfa,#060709fa);border-right-color:#ffffff0f}.study-left-sidebar{gap:18px;padding:18px 18px 20px;min-height:100%}.sidebar-back-btn{gap:10px;padding:4px 2px 2px;color:#ffffffa8;font-size:14px;font-weight:550}.sidebar-back-btn:hover{color:#fffffff0}.sidebar-course-card-restored{gap:16px;padding:18px;border-radius:28px;border:1px solid rgba(255,255,255,.08);border-left-width:1px;background:linear-gradient(180deg,#171317f5,#100d11fa);box-shadow:inset 0 1px #ffffff0a}.sidebar-course-card-restored .course-emoji{width:64px;height:64px;flex-shrink:0;border-radius:22px;display:flex;align-items:center;justify-content:center;font-size:36px;border:1px solid rgba(255,255,255,.08);background:#ffffff08}.sidebar-course-card-restored .course-title{font-size:20px;font-weight:700;letter-spacing:-.03em;margin-bottom:6px}.sidebar-course-card-restored .course-stats{color:#ffffff8a;font-size:13px}.sidebar-course-card-premium{gap:16px;padding:18px;border-radius:28px;border:1px solid rgba(255,255,255,.08);background:linear-gradient(180deg,#171317f5,#100d11fa);box-shadow:inset 0 1px #ffffff0a}.sidebar-course-token{width:64px;height:64px;flex-shrink:0;border-radius:22px;display:flex;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.08);background:#ffffff08;color:#fffffff0}.sidebar-course-token.is-monogram{font-size:20px;font-weight:700;letter-spacing:.08em}.sidebar-course-token.is-emoji{font-size:34px}.course-kicker{display:inline-flex;margin-bottom:5px;font-size:10px;font-weight:650;letter-spacing:.12em;text-transform:uppercase;color:#ffffff6b}.sidebar-course-card-premium .course-title{font-size:20px;font-weight:700;letter-spacing:-.03em;margin-bottom:6px}.sidebar-course-card-premium .course-stats{color:#ffffff8a;font-size:13px}.focus-timer{--ft-surface: rgba(18, 14, 18, .98);--ft-surface-strong: rgba(22, 18, 22, .99);--ft-border: rgba(255, 255, 255, .08);--ft-border-strong: rgba(255, 255, 255, .16);--ft-track: rgba(255, 255, 255, .12);--ft-progress-focus: rgba(245, 245, 248, .98);--ft-progress-break: rgba(205, 191, 176, .92);--ft-btn-bg: rgba(255, 255, 255, .02);--ft-btn-bg-hover: rgba(255, 255, 255, .055);--ft-btn-border: rgba(255, 255, 255, .1);--ft-preset-active-bg: rgba(255, 255, 255, .1);--ft-preset-active-border: rgba(255, 255, 255, .22);--ft-dial-size: clamp(170px, 68cqi, 210px);--ft-time-size: clamp(42px, 16cqi, 56px);padding:22px 18px 20px;border-radius:32px;background:linear-gradient(180deg,#141014fa,#0e0b0ffc);box-shadow:inset 0 1px #ffffff0a}.focus-timer-dial{margin-top:2px}.focus-timer-track,.focus-timer-progress{stroke-width:5.5}.focus-timer-cap-orbit{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;justify-content:center;pointer-events:none;transform-origin:50% 50%}.focus-timer-cap{width:11px;height:11px;margin-top:3px;border-radius:999px;background:#f6f6f9fa;box-shadow:0 0 0 4px #100d11f5}.focus-timer-cap-orbit.is-idle .focus-timer-cap{opacity:.92}.focus-timer-time{letter-spacing:-.05em}.focus-timer-mode{letter-spacing:.18em}.focus-timer-actions{grid-template-columns:1.18fr 1fr 1fr;gap:12px}.focus-timer-btn{height:50px;border-radius:20px}.focus-timer-btn.primary{border-radius:22px}.focus-timer-presets{gap:8px}.focus-timer-preset-btn{height:44px;font-size:13px}.left-rail-materials{flex:1;min-height:0;border-radius:30px;border:1px solid rgba(255,255,255,.08);background:linear-gradient(180deg,#120e12f7,#0c0a0dfa);box-shadow:inset 0 1px #ffffff09;padding:14px 14px 12px}.left-rail-materials .materials-header{padding:2px 4px 10px;font-size:11px;font-weight:700;letter-spacing:.16em;color:#ffffffb8}.left-rail-materials .materials-count{padding:5px 11px;border-radius:999px;background:#ffffff0f;color:#ffffffb3}.left-rail-materials .materials-content-full{padding-right:2px;gap:12px}.materials-create-row{gap:12px;padding:2px 0 0}.materials-create-btn{min-height:90px;justify-content:flex-start;padding:16px;border-radius:20px;border:1px solid rgba(255,255,255,.08);background:#ffffff05;box-shadow:none}.materials-create-btn svg{color:#ffffffc7}.materials-create-btn span{max-width:none}.materials-create-btn:hover{border-color:#ffffff29;background:#ffffff0a}.upload-dropzone-full{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;min-height:220px;padding:26px 18px;border-radius:22px;border:1px dashed rgba(255,255,255,.16);background:#ffffff04;color:#ffffffad;font-size:13px;font-weight:550;text-align:center;cursor:pointer;transition:background .18s ease,border-color .18s ease,color .18s ease}.upload-dropzone-full svg{color:#ffffffd1}.upload-dropzone-full:hover{border-color:#ffffff3d;background:#ffffff08;color:#ffffffeb}.materials-content-full.dragging .upload-dropzone-full{border-color:#ffffff4d;background:#ffffff0a}.left-sidebar .pdf-list{padding:0;gap:8px}.left-sidebar .pdf-item{gap:10px;margin-bottom:0;padding:12px;border-radius:18px;border:1px solid transparent;background:#ffffff05}.left-sidebar .pdf-item:hover{background:#ffffff09;border-color:#ffffff14}.left-sidebar .pdf-item.active{border-left:1px solid rgba(255,255,255,.14);border-color:#ffffff24;background:#ffffff0e;box-shadow:inset 0 1px #ffffff08}.left-sidebar .pdf-item:active{transform:none}.left-sidebar .pdf-drag-handle{color:#ffffff38}.left-sidebar .pdf-item:hover .pdf-drag-handle,.left-sidebar .pdf-item.active .pdf-drag-handle{color:#ffffff80}.left-sidebar .file-icon{width:34px;height:34px;border-radius:10px;background:#ffffff09}.left-sidebar .file-icon:hover{background:#ffffff0f}.left-sidebar .pdf-item-name{font-size:13px;font-weight:600;color:#ffffffeb}.left-sidebar .pdf-item-progress{gap:8px}.left-sidebar .pdf-item-progress .progress-bar.mini{height:4px;background:#ffffff14}.left-sidebar .progress-bar-fill.success{background:linear-gradient(90deg,#ececeff2,#8a8a93db)}.left-sidebar .pdf-item-percent{min-width:30px;font-weight:700;color:#ffffff8c}.left-sidebar .pdf-status-working{color:#fff9}.left-sidebar .pdf-status-complete{color:#c4c4cae6}.left-sidebar .add-pdf-btn{margin-top:6px;padding:12px 14px;border-radius:16px;border:1px dashed rgba(255,255,255,.18);background:#ffffff05;color:#ffffffb3;font-weight:600}.left-sidebar .add-pdf-btn:hover{border-color:#ffffff47;background:#ffffff0a;color:#fffffff0}.left-sidebar .rename-input{padding:6px 8px;border-radius:8px;border-color:#ffffff38;background:#0000002e}.left-sidebar .file-delete-btn{width:28px;height:28px;border-radius:999px}.left-sidebar .context-menu{border-radius:14px;border-color:#ffffff14;background:#0b0c0ff5;box-shadow:0 18px 34px #0000006b}.left-sidebar .context-menu button:hover{background:#ffffff0d}html.light-mode .left-sidebar{background:linear-gradient(180deg,#fafbfefa,#f2f5fafa);border-right-color:var(--light-border-soft)}html.light-mode .sidebar-back-btn{color:#0f172a94}html.light-mode .sidebar-back-btn:hover{color:#0f172ae0}html.light-mode .sidebar-course-card-premium,html.light-mode .sidebar-course-card-restored,html.light-mode .left-rail-materials{background:linear-gradient(180deg,#fffffffa,#f8fafcfa);border-color:var(--light-border-soft);box-shadow:var(--light-shadow-sm)}html.light-mode .sidebar-course-card-restored .course-emoji,html.light-mode .sidebar-course-token{background:#0f172a0a;border-color:var(--light-border-soft);color:var(--light-ink)}html.light-mode .course-kicker{color:#0f172a6b}html.light-mode .sidebar-course-card-restored .course-stats,html.light-mode .sidebar-course-card-premium .course-stats,html.light-mode .left-rail-materials .materials-header,html.light-mode .left-rail-materials .materials-count,html.light-mode .left-sidebar .pdf-item-percent,html.light-mode .upload-dropzone-full{color:#0f172a94}html.light-mode .focus-timer{box-shadow:var(--light-shadow-sm)}html.light-mode .focus-timer-cap{background:#121928eb;box-shadow:0 0 0 4px #fffffffa}html.light-mode .materials-create-btn,html.light-mode .upload-dropzone-full,html.light-mode .left-sidebar .pdf-item,html.light-mode .left-sidebar .add-pdf-btn,html.light-mode .left-sidebar .file-icon,html.light-mode .left-sidebar .rename-input,html.light-mode .left-sidebar .context-menu{background:#fffffff0;border-color:var(--light-border-soft);color:var(--light-ink)}html.light-mode .materials-create-btn:hover,html.light-mode .upload-dropzone-full:hover,html.light-mode .left-sidebar .pdf-item:hover,html.light-mode .left-sidebar .add-pdf-btn:hover,html.light-mode .left-sidebar .file-icon:hover,html.light-mode .left-sidebar .context-menu button:hover{background:#f8fafcfa;border-color:var(--light-border)}html.light-mode .left-sidebar .pdf-item.active{background:#f5f7fbfa;border-color:#0f172a24}html.light-mode .left-sidebar .pdf-item-name,html.light-mode .sidebar-course-card-restored .course-title,html.light-mode .sidebar-course-card-premium .course-title,html.light-mode .left-sidebar .context-menu button{color:var(--light-ink)}html.light-mode .left-sidebar .progress-bar-fill.success{background:linear-gradient(90deg,#1f2937db,#94a3b8b8)}html.light-mode .left-sidebar .pdf-item-progress .progress-bar.mini{background:#0f172a14}html.light-mode .left-sidebar .pdf-status-working,html.light-mode .left-sidebar .pdf-status-complete,html.light-mode .upload-dropzone-full svg,html.light-mode .materials-create-btn svg{color:#0f172aad}html.light-mode .glass-grade-btn{border-color:#0f172a24;background:linear-gradient(135deg,#d6404524,#2563eb1a);color:#0f172ae0}html.light-mode .glass-grade-btn.active{border-color:#0f172a38;box-shadow:0 0 0 1px #0f172a14,0 8px 22px #0f172a1f}html.light-mode .grade-sim-overlay{background:#94a3b852}html.light-mode .grade-sim-modal{background:linear-gradient(180deg,#fffffffa,#f6f9fdfa);box-shadow:0 26px 60px #0f172a33}html.light-mode .grade-sim-toggle.active{border-color:#d640455c;background:linear-gradient(180deg,#d640451a,#d640450d)}html.light-mode .grade-sim-row{background:#94a3b81a}html.light-mode .grade-sim-status-toggle.done{color:#065f46eb}html.light-mode .grade-sim-delete{border-color:#d640453d;background:#d6404514;color:#9c1e23f2}.grade-lab-modal{width:min(1220px,96vw);max-height:92vh;padding:18px;gap:14px;border-radius:20px;background:linear-gradient(180deg,#121214f7,#0d0d0ff7)}.grade-lab-top{display:grid;grid-template-columns:minmax(240px,1.3fr) minmax(240px,1fr) minmax(180px,.8fr) auto;gap:10px;align-items:stretch}.grade-lab-summary{border:1px solid rgba(255,255,255,.14);border-radius:16px;background:#ffffff05;padding:14px 16px;display:grid;align-content:center;gap:6px}.grade-lab-summary p{margin:0;font-size:12px;color:var(--text-secondary)}.grade-lab-summary h2{margin:0;font-size:clamp(30px,3vw,44px);line-height:.94;letter-spacing:-.03em;color:var(--text-primary)}.grade-lab-mention{justify-self:start;border-radius:999px;padding:4px 10px;font-size:12px;font-weight:700;letter-spacing:.02em}.grade-lab-mention.tone-excellent{color:#d1fae5;background:#10b98138}.grade-lab-mention.tone-good{color:#e0f2fe;background:#38bdf833}.grade-lab-mention.tone-pass{color:#fef3c7;background:#f59e0b33}.grade-lab-mention.tone-risk{color:#fecaca;background:#ef444433}.grade-lab-mention.tone-neutral{color:var(--text-secondary);background:#94a3b833}.grade-lab-switches{border:1px solid var(--border-medium);border-radius:16px;background:#ffffff05;padding:8px;display:grid;gap:8px}.grade-lab-switch{min-height:34px;border-radius:10px;border:1px solid transparent;background:#ffffff06;color:var(--text-secondary);display:inline-flex;align-items:center;gap:8px;padding:0 10px;cursor:pointer;font-size:12px;font-weight:700}.grade-lab-switch.on{color:var(--text-primary);border-color:#ffffff2e;background:#ffffff12}.grade-lab-inputs{border:1px solid var(--border-medium);border-radius:16px;background:#ffffff05;padding:9px 10px;display:grid;gap:8px}.grade-lab-inputs label{display:inline-flex;align-items:center;gap:6px;font-size:11px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.08em;font-weight:700}.grade-lab-inputs input,.grade-lab-inputs select{height:34px;border-radius:9px;border:1px solid var(--border-medium);background:var(--bg-secondary);color:var(--text-primary);padding:0 10px;font-size:13px}.grade-lab-target-wrap{display:grid;grid-template-columns:minmax(0,1fr) 68px;gap:8px}.grade-lab-close{width:34px;height:34px;border-radius:10px;border:1px solid var(--border-medium);background:var(--bg-tertiary);color:var(--text-secondary);display:inline-flex;align-items:center;justify-content:center;cursor:pointer}.grade-lab-banner{border-radius:12px;border:1px solid var(--border-medium);padding:9px 10px;display:grid;grid-template-columns:14px minmax(0,1fr);gap:8px;align-items:center}.grade-lab-banner p{margin:0;font-size:13px;line-height:1.45;color:var(--text-secondary)}.grade-lab-banner strong{color:var(--text-primary)}.grade-lab-banner.tone-good{border-color:#10b98166;background:#10b9811c}.grade-lab-banner.tone-warn{border-color:#f59e0b73;background:#f59e0b1f}.grade-lab-banner.tone-risk{border-color:#ef444470;background:#ef44441c}.grade-lab-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;overflow:auto;padding-right:2px}.grade-lab-card{border-radius:14px;border:1px solid rgba(255,255,255,.14);background:#ffffff05;padding:12px;display:grid;gap:10px}.grade-lab-card.muted{opacity:.55}.grade-lab-card-head{display:flex;align-items:center;justify-content:space-between;gap:10px}.grade-lab-module-name{width:100%;min-width:0;border:none;background:transparent;color:var(--text-primary);font-size:16px;font-weight:700;letter-spacing:-.01em;padding:0}.grade-lab-module-name:focus{outline:none}.grade-lab-card-right{display:inline-flex;align-items:center;gap:6px}.grade-lab-card-right strong{font-size:32px;line-height:1;letter-spacing:-.03em}.grade-lab-mini{width:28px;height:28px;border-radius:9px;border:1px solid var(--border-medium);background:var(--bg-secondary);color:var(--text-muted);display:inline-flex;align-items:center;justify-content:center;cursor:pointer}.grade-lab-mini.on{color:var(--text-primary);border-color:#ffffff4d}.grade-lab-mini.danger{color:#ff9c9cf2;border-color:#ef444473;background:#ef44441a}.grade-lab-tests{display:grid;gap:10px}.grade-lab-test{border-radius:12px;border:1px solid rgba(255,255,255,.08);background:#ffffff04;padding:8px 9px;display:grid;gap:7px}.grade-lab-test.off{opacity:.5}.grade-lab-test-top{display:flex;justify-content:space-between;align-items:center;gap:8px}.grade-lab-test-name{width:100%;min-width:0;border:none;background:transparent;color:var(--text-secondary);font-size:13px;font-weight:600;padding:0}.grade-lab-test-name:focus{outline:none;color:var(--text-primary)}.grade-lab-test-meta{display:inline-flex;align-items:center;gap:6px;flex-shrink:0}.grade-lab-weight-tag{font-size:12px;color:var(--text-muted);min-width:38px;text-align:right}.grade-lab-weight-editor{display:inline-flex;align-items:center;gap:4px;font-size:11px;color:var(--text-muted)}.grade-lab-weight-editor input{width:54px;height:26px;border-radius:8px;border:1px solid var(--border-medium);background:var(--bg-secondary);color:var(--text-primary);padding:0 6px;font-size:12px}.grade-lab-score-tag{min-width:42px;text-align:right;font-size:26px;line-height:1;font-weight:800;letter-spacing:-.03em}.grade-lab-slider{width:100%;accent-color:#8c9197}.grade-lab-slider:disabled{opacity:.45}.grade-lab-add-test{height:32px;border-radius:9px;border:1px dashed rgba(255,255,255,.24);background:#ffffff08;color:var(--text-secondary);display:inline-flex;align-items:center;justify-content:center;gap:6px;font-size:12px;font-weight:700;cursor:pointer}.grade-lab-add-test:hover{border-color:#ffffff5c;color:var(--text-primary)}.grade-lab-footer{display:flex;align-items:center;gap:8px}.grade-lab-footer-btn{height:36px;border-radius:10px;border:1px solid var(--border-medium);background:var(--bg-tertiary);color:var(--text-secondary);padding:0 12px;display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;cursor:pointer}.grade-lab-footer-btn:hover{color:var(--text-primary)}.grade-lab-footer-btn.muted{margin-left:auto}.grade-lab-footer-btn.primary{color:#fff;border-color:#c41e3a9e;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary))}@media (max-width: 1080px){.grade-lab-top{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.grade-lab-close{justify-self:end}}@media (max-width: 860px){.grade-lab-grid{grid-template-columns:1fr}}@media (max-width: 760px){.grade-lab-modal{width:100%;padding:12px;border-radius:14px}.grade-lab-top{grid-template-columns:1fr}.grade-lab-card-right strong{font-size:26px}.grade-lab-test-top{align-items:flex-start;flex-direction:column}.grade-lab-test-meta,.grade-lab-footer{flex-wrap:wrap}.grade-lab-footer-btn.muted{margin-left:0}.grade-lab-footer-btn{flex:1 1 calc(50% - 4px)}.grade-lab-footer-btn.primary{flex-basis:100%}}html.light-mode .grade-lab-modal{background:linear-gradient(180deg,#fffffffa,#f7f9fcfa)}html.light-mode .grade-lab-summary,html.light-mode .grade-lab-switches,html.light-mode .grade-lab-inputs,html.light-mode .grade-lab-card,html.light-mode .grade-lab-test{background:#ffffffd1;border-color:#0f172a24}html.light-mode .grade-lab-switch.on,html.light-mode .grade-lab-mini.on{border-color:#0f172a3d;background:#0f172a14}html.light-mode .grade-lab-score-tag{color:#0f172ad1!important}.gl-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:9999;display:flex;align-items:center;justify-content:center;background:#000000d1;backdrop-filter:blur(22px) saturate(160%);-webkit-backdrop-filter:blur(22px) saturate(160%);animation:gl-fade .2s ease}@keyframes gl-fade{0%{opacity:0;transform:scale(.99)}to{opacity:1;transform:scale(1)}}.gl-modal{position:relative;overflow:hidden;width:min(1140px,96vw);max-height:92vh;display:flex;flex-direction:column;gap:0;border-radius:22px;border:1px solid rgba(255,255,255,.1);background:#0a0a0cf7;box-shadow:0 0 0 1px #ffffff0d inset,0 1px #ffffff17 inset,0 50px 110px #000000b8,0 20px 42px #0000006b;backdrop-filter:blur(40px) saturate(160%);-webkit-backdrop-filter:blur(40px) saturate(160%);overflow-y:auto}.gl-modal:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:0;border-radius:inherit;background:radial-gradient(ellipse 700px 250px at 12% -8%,rgba(255,255,255,.03) 0%,transparent 65%),radial-gradient(ellipse 500px 500px at 92% 100%,rgba(255,255,255,.02) 0%,transparent 60%),radial-gradient(ellipse 350px 220px at 55% 48%,rgba(210,215,232,.014) 0%,transparent 55%)}.gl-modal:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:0;border-radius:inherit;background:linear-gradient(135deg,rgba(255,255,255,.052) 0%,transparent 34%)}.gl-head,.gl-projection,.gl-body,.gl-bar{position:relative;z-index:1}.gl-head{display:flex;align-items:flex-start;gap:16px;padding:18px 22px;border-bottom:1px solid rgba(255,255,255,.06);position:relative}.gl-avg{display:flex;align-items:baseline;gap:4px;flex-shrink:0}.gl-avg-num{font-size:44px;font-weight:800;letter-spacing:-.048em;color:#ffffffed;font-variant-numeric:tabular-nums}.gl-avg-denom{font-size:15px;color:#ffffff42;font-weight:500}.gl-avg-tag{margin-left:12px;padding:3px 10px;border-radius:999px;font-size:10.5px;font-weight:700;text-transform:uppercase;letter-spacing:.07em;border:1px solid rgba(255,255,255,.12);background:#ffffff0f;color:#ffffffad}.gl-avg-tag--excellent{background:#ffffff1f;border-color:#ffffff42;color:#fffffff2}.gl-avg-tag--good{background:#ffffff17;border-color:#ffffff2e;color:#ffffffd1}.gl-avg-tag--pass{background:#ffffff0e;border-color:#ffffff1f;color:#fff9}.gl-avg-tag--risk{background:#ff37371f;border-color:#ff55553d;color:#ff9e9eeb}.gl-avg-tag--neutral{background:#ffffff0a;border-color:#ffffff14;color:#ffffff52}.gl-switches{display:flex;gap:5px;flex-wrap:wrap;margin-left:16px;align-self:center}.gl-sw{height:30px;padding:0 10px;border-radius:8px;border:1px solid rgba(255,255,255,.08);background:transparent;color:#ffffff47;font-size:12px;font-weight:500;display:inline-flex;align-items:center;gap:5px;cursor:pointer;transition:color .13s ease,border-color .13s ease,background .13s ease}.gl-sw:hover{color:#ffffff9e;border-color:#ffffff26}.gl-sw--on{color:#ffffffe0;border-color:#ffffff38;background:#ffffff0f}.gl-cfg{display:flex;gap:10px;flex-wrap:wrap;margin-left:auto;align-self:center}.gl-cfg-label{display:flex;align-items:center;gap:7px;font-size:10.5px;color:#ffffff47;font-weight:600;text-transform:uppercase;letter-spacing:.09em}.gl-cfg-input{height:30px;width:72px;border-radius:8px;border:1px solid rgba(255,255,255,.1);background:#ffffff0a;color:#ffffffe6;padding:0 8px;font-size:13px;font-variant-numeric:tabular-nums;font-weight:600;transition:border-color .13s ease,box-shadow .13s ease}.gl-cfg-input:focus{outline:none;border-color:#ffffff47;box-shadow:0 0 0 3px #ffffff0f}.gl-cfg-input--date{width:132px}.gl-cfg-select{height:30px;border-radius:8px;border:1px solid rgba(255,255,255,.1);background:#ffffff0a;color:#ffffffe6;padding:0 7px;font-size:12px;font-weight:600}.gl-x{position:absolute;top:16px;right:18px;width:30px;height:30px;border-radius:8px;border:1px solid rgba(255,255,255,.08);background:#ffffff08;color:#ffffff4d;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .14s ease}.gl-x:hover{color:#ffffffd6;border-color:#fff3;background:#ffffff12;transform:translateY(-1px)}.gl-projection{padding:9px 22px;font-size:12px;color:#ffffff5c;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid rgba(255,255,255,.05);background:#ffffff04}.gl-projection-text{flex:1;min-width:0}.gl-projection-deadline{font-weight:700;color:#ffffff85;margin-left:12px;flex-shrink:0;font-variant-numeric:tabular-nums}.gl-projection--risk .gl-projection-text{color:#ff8a8ab8}.gl-projection--warn .gl-projection-text{color:#ffda6c9e}.gl-projection--good .gl-projection-text{color:#b4ffd29e}.gl-body{display:flex;flex-direction:column;gap:0}.gl-body--grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0}.gl-mod{border:1px solid rgba(255,255,255,.055);border-radius:0}.gl-body--grid .gl-mod{border-radius:0}.gl-mod--off{opacity:.3}.gl-mod-head{display:flex;align-items:center;gap:7px;padding:9px 16px;background:#ffffff07;border-bottom:1px solid rgba(255,255,255,.05)}.gl-mod-check{display:flex;align-items:center;cursor:pointer}.gl-mod-check input[type=checkbox]{width:14px;height:14px;accent-color:rgba(255,255,255,.72);cursor:pointer}.gl-mod-name{flex:1;min-width:0;border:none;background:transparent;color:#ffffffd6;font-size:13px;font-weight:700;padding:0;letter-spacing:-.015em}.gl-mod-name:focus{outline:none;color:#fffffffa}.gl-mod-avg{font-size:19px;font-weight:800;color:#ffffffb8;letter-spacing:-.038em;font-variant-numeric:tabular-nums}.gl-mod-avg-d{font-size:11px;font-weight:400;color:#ffffff42}.gl-mod-coeff{display:flex;align-items:center;gap:4px;font-size:10px;color:#ffffff47;text-transform:uppercase;letter-spacing:.05em;flex-shrink:0}.gl-mod-coeff input{width:38px;height:22px;border-radius:5px;border:1px solid rgba(255,255,255,.1);background:#ffffff0a;color:#ffffffd9;padding:0 5px;font-size:12px;font-weight:600;text-align:center;transition:border-color .13s ease}.gl-mod-coeff input:focus{outline:none;border-color:#ffffff47}.gl-mod-del{width:22px;height:22px;border-radius:5px;border:none;background:transparent;color:#ffffff2e;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:color .12s ease,background .12s ease}.gl-mod-del:hover{color:#ff6464e6;background:#ff323214}.gl-row{display:flex;align-items:center;gap:7px;padding:5px 16px;transition:background .12s ease;position:relative}.gl-row:hover{background:#ffffff05}.gl-row--sim{opacity:.5}.gl-row--sim:hover{opacity:.78}.gl-row-done{display:flex;align-items:center;cursor:pointer;flex-shrink:0}.gl-row-done input[type=checkbox]{width:13px;height:13px;accent-color:rgba(255,255,255,.72);cursor:pointer}.gl-row-name{flex:1;min-width:0;border:none;background:transparent;color:#ffffff85;font-size:12px;font-weight:500;padding:0;transition:color .13s ease}.gl-row-name:focus{outline:none;color:#ffffffe0}.gl-row-wt{width:36px;text-align:right;padding-right:6px;font-size:11px;color:#ffffff42;font-variant-numeric:tabular-nums;flex-shrink:0}.gl-row-wt-input{width:38px;height:22px;border-radius:5px;border:1px solid rgba(255,255,255,.09);background:#ffffff08;color:#ffffffd1;padding:0 5px;font-size:11px;font-weight:600;text-align:right;flex-shrink:0;transition:border-color .13s ease}.gl-row-wt-input:focus{outline:none;border-color:#ffffff42}.gl-row-score-input{width:54px;height:24px;border-radius:6px;border:1px solid transparent;background:transparent;color:#fffc;padding:0 5px;font-size:13px;font-weight:700;text-align:right;font-variant-numeric:tabular-nums;letter-spacing:-.02em;flex-shrink:0;transition:border-color .12s ease,background .12s ease,color .12s ease}.gl-row-score-input:hover{border-color:#ffffff21;background:#ffffff08}.gl-row-score-input:focus{outline:none;border-color:#ffffff3d;background:#ffffff0d;color:#fffffff7;box-shadow:0 0 0 3px #ffffff0d}.gl-row-slider{flex:1;min-width:60px;padding:0 2px}.gl-row-del{width:20px;height:20px;border-radius:4px;border:none;background:transparent;color:transparent;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;transition:color .12s ease,background .12s ease}.gl-row:hover .gl-row-del{color:#fff3}.gl-row-del:hover{color:#ff5f5fe6!important;background:#ff323214}.gl-range{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:4px;border-radius:999px;background:linear-gradient(to right,rgba(255,255,255,.65) 0%,rgba(255,255,255,.65) var(--pct, 50%),rgba(255,255,255,.09) var(--pct, 50%),rgba(255,255,255,.09) 100%);outline:none;cursor:pointer}.gl-range::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;border-radius:50%;background:#ffffffeb;border:none;box-shadow:0 2px 6px #0000007a,0 0 0 2px #ffffff29;cursor:pointer;transition:transform .13s ease,box-shadow .13s ease}.gl-range::-webkit-slider-thumb:hover{transform:scale(1.22);box-shadow:0 3px 10px #0000008c,0 0 0 3px #ffffff21}.gl-range::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:#ffffffeb;border:none;box-shadow:0 2px 6px #0000007a;cursor:pointer}.gl-range::-moz-range-track{height:4px;border-radius:999px}.gl-range:disabled{opacity:.22;cursor:not-allowed}.gl-mod-add{display:flex;align-items:center;justify-content:center;gap:4px;padding:6px 16px;font-size:11px;font-weight:500;color:#fff3;background:transparent;border:none;cursor:pointer;width:100%;transition:color .13s ease,background .13s ease}.gl-mod-add:hover{color:#ffffff9e;background:#ffffff06}.gl-bar{display:flex;align-items:center;gap:6px;padding:11px 18px;border-top:1px solid rgba(255,255,255,.06);background:#ffffff04}.gl-bar-btn{height:30px;padding:0 12px;border-radius:8px;border:1px solid rgba(255,255,255,.09);background:#ffffff08;color:#ffffff8c;font-size:12px;font-weight:600;display:inline-flex;align-items:center;gap:5px;cursor:pointer;transition:all .14s ease}.gl-bar-btn:hover{color:#ffffffe6;border-color:#ffffff2e;background:#ffffff0f;transform:translateY(-1px)}.gl-bar-btn--dim{color:#ffffff42;margin-left:auto}.gl-bar-btn--close{color:#ffffffc7;background:#ffffff12;border-color:#ffffff24}.gl-bar-btn--close:hover{background:#ffffff1f}@media (max-width: 860px){.gl-head{flex-wrap:wrap}.gl-switches,.gl-cfg{margin-left:0}.gl-body--grid{grid-template-columns:1fr}}@media (max-width: 600px){.gl-head{padding:12px 14px}.gl-avg-num{font-size:30px}.gl-row{padding:4px 10px;flex-wrap:wrap}.gl-row-slider{min-width:100%;margin-top:2px}.gl-mod-head{padding:7px 12px}.gl-bar{padding:8px 12px}}html.light-mode .gl-overlay{background:#5a64784d;-webkit-backdrop-filter:blur(22px) saturate(160%);backdrop-filter:blur(22px) saturate(160%)}html.light-mode .gl-modal{background:#f8f8fbf7;border-color:#0000001a;box-shadow:0 0 0 1px #ffffffb3 inset,0 1px #ffffffe6 inset,0 50px 110px #00000021,0 20px 42px #00000012}html.light-mode .gl-modal:before{background:radial-gradient(ellipse 700px 250px at 12% -8%,rgba(0,0,0,.01) 0%,transparent 65%),radial-gradient(ellipse 500px 500px at 92% 100%,rgba(0,0,0,.007) 0%,transparent 60%)}html.light-mode .gl-modal:after{background:linear-gradient(135deg,rgba(255,255,255,.65) 0%,transparent 34%)}html.light-mode .gl-head{border-color:#0000000f}html.light-mode .gl-avg-num{color:#000000e6}html.light-mode .gl-avg-denom{color:#00000052}html.light-mode .gl-avg-tag{background:#0000000d;border-color:#0000001a;color:#0000009e}html.light-mode .gl-avg-tag--excellent{background:#00000017;border-color:#0000002e;color:#000000e0}html.light-mode .gl-avg-tag--risk{background:#b4000012;border-color:#a0000029;color:#8c0000d9}html.light-mode .gl-sw{color:#00000057;border-color:#0000001a}html.light-mode .gl-sw:hover{color:#0009}html.light-mode .gl-sw--on{color:#000000d1;border-color:#0000002e;background:#0000000d}html.light-mode .gl-cfg-label{color:#0000005c}html.light-mode .gl-cfg-input,html.light-mode .gl-cfg-select{background:#ffffffd9;border-color:#0000001f;color:#000000e6}html.light-mode .gl-x{background:#ffffffb8;border-color:#0000001a;color:#0000006b}html.light-mode .gl-x:hover{background:#fffffff5;color:#000c}html.light-mode .gl-projection{background:#00000004;border-color:#0000000d;color:#00000070}html.light-mode .gl-projection-deadline{color:#0000008c}html.light-mode .gl-projection--risk .gl-projection-text{color:#a00000b3}html.light-mode .gl-projection--warn .gl-projection-text{color:#825000b3}html.light-mode .gl-projection--good .gl-projection-text{color:#006432b3}html.light-mode .gl-mod{border-color:#0000000f}html.light-mode .gl-mod-head{background:#00000006;border-color:#0000000f}html.light-mode .gl-mod-name{color:#000000d1}html.light-mode .gl-mod-name:focus{color:#000000f5}html.light-mode .gl-mod-avg{color:#000000a6}html.light-mode .gl-mod-avg-d{color:#00000047}html.light-mode .gl-mod-del{color:#00000038}html.light-mode .gl-row:hover{background:#00000004}html.light-mode .gl-row-name{color:#0000008f}html.light-mode .gl-row-name:focus{color:#000000e0}html.light-mode .gl-row-wt{color:#0000004d}html.light-mode .gl-row-score-input{color:#000000b8}html.light-mode .gl-row-score-input:focus{color:#000000eb;border-color:#00000038;background:#00000008}html.light-mode .gl-range{background:linear-gradient(to right,rgba(0,0,0,.62) 0%,rgba(0,0,0,.62) var(--pct,50%),rgba(0,0,0,.1) var(--pct,50%),rgba(0,0,0,.1) 100%)}html.light-mode .gl-range::-webkit-slider-thumb{background:#000c;box-shadow:0 2px 6px #0003,0 0 0 2px #00000017}html.light-mode .gl-range::-moz-range-thumb{background:#000c}html.light-mode .gl-mod-add{color:#00000042}html.light-mode .gl-mod-add:hover{color:#0000009e;background:#00000006}html.light-mode .gl-bar{background:#00000004;border-color:#0000000f}html.light-mode .gl-bar-btn{background:#ffffffd1;border-color:#0000001a;color:#0000008c}html.light-mode .gl-bar-btn:hover{background:#fffffffa;border-color:#0000002e;color:#000000d9}html.light-mode .gl-bar-btn--dim{color:#00000047}html.light-mode .gl-bar-btn--close{background:#00000012;border-color:#00000024;color:#000000b8}html.light-mode .gl-mod-check input[type=checkbox],html.light-mode .gl-row-done input[type=checkbox]{accent-color:rgba(0,0,0,.62)}.ls{display:flex;flex-direction:column;gap:0;padding:14px 12px 12px;overflow-y:auto;overflow-x:hidden;height:100%;container-type:inline-size;scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.08) transparent}.ls-back{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;margin-bottom:10px;border:none;border-radius:8px;background:transparent;color:#ffffff73;font-size:12px;font-weight:500;cursor:pointer;transition:color .15s,background .15s;align-self:flex-start}.ls-back:hover{color:#fffc;background:#ffffff0a}.ls-course{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:12px;background:#ffffff06;border:1px solid rgba(255,255,255,.06);margin-bottom:12px}.ls-course-icon{font-size:22px;flex-shrink:0}.ls-course-info{display:flex;flex-direction:column;gap:2px;min-width:0}.ls-course-name{font-size:13px;font-weight:600;color:#ffffffe6;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ls-course-meta{font-size:11px;color:#ffffff59}.ls-timer{display:flex;flex-direction:column;align-items:center;gap:14px;padding:20px 14px 16px;margin-bottom:12px;border-radius:20px;border:1px solid rgba(255,255,255,.06);background:linear-gradient(180deg,#100e12f2,#0c0a0efa);position:relative;overflow:hidden}.ls-timer--active{border-color:#ffffff1a}.ls-timer--break{border-color:#d2b89433}.ls-timer-trans{position:absolute;top:0;right:0;bottom:0;left:0;z-index:5;display:flex;align-items:center;justify-content:center;padding:14px;background:#00000080;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}.ls-timer-trans-inner{width:100%;border-radius:14px;padding:12px;border:1px solid rgba(255,255,255,.1);background:#141216eb;display:flex;flex-direction:column;gap:8px}.ls-timer-trans-label{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:#ffffff80}.ls-timer-trans-num{font-size:28px;font-weight:800;color:#ffffffe6;text-align:center}.ls-timer-trans-bar{height:4px;border-radius:99px;background:#ffffff14;overflow:hidden}.ls-timer-trans-fill{height:100%;border-radius:99px;background:#ffffffb3;transition:width .12s linear}.ls-dial{position:relative;width:clamp(110px,56cqi,140px);aspect-ratio:1}.ls-dial-svg{width:100%;height:100%;transform:rotate(-90deg)}.ls-dial-arc{stroke:#ffffffd9;transition:stroke-dashoffset .4s linear}.ls-timer--break .ls-dial-arc{stroke:#dcbe8ccc}.ls-dial-center{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px}.ls-dial-time{font-family:JetBrains Mono,ui-monospace,SFMono-Regular,Menlo,monospace;font-size:clamp(24px,11cqi,34px);font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.02em;color:#ffffffeb}.ls-dial-label{font-size:9px;font-weight:700;text-transform:uppercase;letter-spacing:.14em;color:#ffffff4d}.ls-timer-ctrls{display:flex;align-items:center;justify-content:center;gap:10px}.ls-tbtn{width:38px;height:38px;display:flex;align-items:center;justify-content:center;border-radius:12px;border:1px solid rgba(255,255,255,.08);background:#ffffff05;color:#fff9;cursor:pointer;transition:all .15s}.ls-tbtn:hover:not(:disabled){background:#ffffff0f;border-color:#ffffff24;color:#ffffffe6}.ls-tbtn:disabled{opacity:.3;cursor:not-allowed}.ls-tbtn--play{width:48px;height:48px;border-radius:50%;background:#ffffffeb;border:none;color:#0a0a0ee6}.ls-tbtn--play:hover:not(:disabled){background:#fff;transform:scale(1.06);box-shadow:0 0 20px #ffffff26}.ls-tbtn--play:active:not(:disabled){transform:scale(.97)}.ls-presets{display:flex;gap:6px;width:100%}.ls-pre{flex:1;height:30px;border-radius:99px;border:1px solid rgba(255,255,255,.06);background:transparent;color:#ffffff59;font-size:11px;font-weight:600;cursor:pointer;transition:all .12s}.ls-pre:hover{border-color:#ffffff1f;color:#ffffffb3}.ls-pre--on{background:#ffffff14;border-color:#ffffff2e;color:#ffffffe6}.ls-files{flex:1;display:flex;flex-direction:column;min-height:0}.ls-files-head{display:flex;align-items:center;gap:6px;padding:8px 4px;border:none;background:transparent;color:#fff6;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;cursor:pointer;transition:color .15s}.ls-files-head:hover{color:#ffffffb3}.ls-files-count{margin-left:auto;width:18px;height:18px;display:flex;align-items:center;justify-content:center;border-radius:6px;background:#ffffff0f;font-size:10px;font-weight:600;color:#ffffff80}.ls-files-body{flex:1;display:flex;flex-direction:column;gap:6px;overflow-y:auto;min-height:0}.ls-files-body--drag{background:#ffffff05;border-radius:10px;outline:2px dashed rgba(255,255,255,.12);outline-offset:-2px}.ls-create-row{display:flex;gap:4px}.ls-create-btn{flex:1;display:flex;align-items:center;justify-content:center;gap:4px;padding:6px 0;border:1px solid rgba(255,255,255,.06);border-radius:8px;background:transparent;color:#fff6;font-size:11px;font-weight:500;cursor:pointer;transition:all .12s}.ls-create-btn:hover{border-color:#ffffff1f;color:#ffffffb3;background:#ffffff05}.ls-create-btn--up{border-style:dashed}.ls-dropzone{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:24px 12px;border:1px dashed rgba(255,255,255,.1);border-radius:12px;color:#ffffff4d;font-size:12px;cursor:pointer;transition:all .15s}.ls-dropzone:hover{border-color:#fff3;color:#ffffff80}.ls-flist{display:flex;flex-direction:column;gap:1px}.ls-f{display:flex;align-items:center;gap:6px;padding:6px 8px;border-radius:8px;cursor:pointer;position:relative;transition:background .12s}.ls-f:hover{background:#ffffff08}.ls-f--on{background:#ffffff0f}.ls-f--on:before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:2px;height:60%;border-radius:99px;background:#ffffff80}.ls-f--drag{opacity:.4}.ls-f--over{box-shadow:inset 0 2px #fff3}.ls-f-grip{color:#ffffff26;flex-shrink:0;cursor:grab}.ls-f:hover .ls-f-grip{color:#ffffff4d}.ls-f-icon{font-size:14px;flex-shrink:0;cursor:pointer}.ls-f-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:3px}.ls-f-name{font-size:12px;color:#ffffffb3;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ls-f--on .ls-f-name{color:#fffffff2}.ls-f-rename{font-size:12px;padding:2px 4px;border:1px solid rgba(255,255,255,.15);border-radius:4px;background:#ffffff0a;color:#ffffffe6;outline:none}.ls-f-bar{height:2px;border-radius:99px;background:#ffffff0f}.ls-f-bar-fill{height:100%;border-radius:99px;background:#ffffff40;transition:width .2s}.ls-f--on .ls-f-bar-fill{background:#fff6}.ls-f-del{width:18px;height:18px;display:flex;align-items:center;justify-content:center;border:none;border-radius:4px;background:transparent;color:#fff3;cursor:pointer;flex-shrink:0;opacity:0;transition:all .12s}.ls-f:hover .ls-f-del{opacity:1}.ls-f-del:hover{color:#ef4444;background:#ef44441a}.ls-add{display:flex;align-items:center;justify-content:center;gap:4px;padding:8px 0;margin-top:2px;border:1px dashed rgba(255,255,255,.08);border-radius:8px;background:transparent;color:#ffffff4d;font-size:11px;cursor:pointer;transition:all .12s}.ls-add:hover{border-color:#ffffff24;color:#fff9}.ls-epop{position:absolute;left:36px;top:-4px;z-index:50;width:240px;max-height:260px;padding:8px;border-radius:12px;border:1px solid rgba(255,255,255,.1);background:#121014f7;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);display:flex;flex-direction:column;gap:6px;box-shadow:0 12px 40px #0009}.ls-epop-top{display:flex;gap:4px}.ls-epop-in{flex:1;padding:5px 8px;border:1px solid rgba(255,255,255,.1);border-radius:6px;background:#ffffff0a;color:#fffc;font-size:12px;outline:none}.ls-epop-set{padding:4px 10px;border:1px solid rgba(255,255,255,.1);border-radius:6px;background:#ffffff0f;color:#fff9;font-size:11px;font-weight:600;cursor:pointer}.ls-epop-set:disabled{opacity:.3}.ls-epop-filter{padding:4px 8px;border:1px solid rgba(255,255,255,.06);border-radius:6px;background:transparent;color:#fff9;font-size:11px;outline:none}.ls-epop-grid{display:flex;flex-wrap:wrap;gap:2px;max-height:140px;overflow-y:auto}.ls-epop-btn{width:28px;height:28px;display:flex;align-items:center;justify-content:center;border:none;border-radius:6px;background:transparent;font-size:15px;cursor:pointer;transition:background .1s}.ls-epop-btn:hover{background:#ffffff0f}.ls-ctx{position:fixed;z-index:100;min-width:140px;padding:4px;border-radius:10px;border:1px solid rgba(255,255,255,.1);background:#121014f5;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);box-shadow:0 12px 40px #00000080}.ls-ctx button{display:flex;align-items:center;gap:8px;width:100%;padding:7px 10px;border:none;border-radius:6px;background:transparent;color:#ffffffb3;font-size:12px;cursor:pointer;transition:background .1s}.ls-ctx button:hover{background:#ffffff0f}.ls-ctx--danger{color:#ef4444!important}.ls-ctx--danger:hover{background:#ef44441a!important}html.light-mode .ls-back{color:#0006}html.light-mode .ls-back:hover{color:#000000b3;background:#0000000a}html.light-mode .ls-course{background:#00000005;border-color:#0000000f}html.light-mode .ls-course-name{color:#000000d9}html.light-mode .ls-course-meta{color:#0006}html.light-mode .ls-timer{background:linear-gradient(180deg,#fafafa,#f5f5f5);border-color:#00000014}html.light-mode .ls-dial-arc{stroke:#000000bf}html.light-mode .ls-dial-time{color:#000000d9}html.light-mode .ls-dial-label{color:#0000004d}html.light-mode .ls-tbtn{border-color:#00000014;color:#00000080}html.light-mode .ls-tbtn:hover:not(:disabled){background:#0000000a;color:#000c}html.light-mode .ls-tbtn--play{background:#000000d9;color:#fff}html.light-mode .ls-tbtn--play:hover:not(:disabled){background:#000}html.light-mode .ls-pre{border-color:#0000000f;color:#00000059}html.light-mode .ls-pre--on{background:#0000000f;border-color:#00000024;color:#000c}html.light-mode .ls-f:hover{background:#00000008}html.light-mode .ls-f--on{background:#0000000d}html.light-mode .ls-f--on:before{background:#0006}html.light-mode .ls-f-name{color:#0009}html.light-mode .ls-f--on .ls-f-name{color:#000000e6}html.light-mode .ls-f-bar{background:#0000000f}html.light-mode .ls-f-bar-fill{background:#0003}:root{--cp-quality-high: #4ade80;--cp-quality-mid: #facc15}.cp-shell{display:flex;flex-direction:column;height:100%;background:transparent;position:relative;overflow:hidden}.cp-header{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid rgba(255,255,255,.06);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);background:#ffffff05;flex-shrink:0}.cp-header-left{display:flex;flex-direction:column;gap:3px;min-width:0}.cp-header-file{font-size:13px;font-weight:600;color:#ffffffe0;letter-spacing:-.01em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.cp-header-powered{display:inline-flex;align-items:center;gap:4px;font-size:10.5px;font-weight:500;color:#ffffff47;letter-spacing:.02em;text-transform:uppercase}.cp-header-powered svg{opacity:.5}.cp-reset-btn{display:flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:8px;border:1px solid rgba(255,255,255,.07);background:#ffffff08;color:#fff6;cursor:pointer;transition:all .2s ease;flex-shrink:0}.cp-reset-btn:hover:not(:disabled){background:#ffffff12;color:#ffffffb3;border-color:#ffffff1f}.cp-reset-btn:disabled{opacity:.3;cursor:default}.cp-messages{flex:1;overflow-y:auto;padding:20px 18px;display:flex;flex-direction:column;gap:16px;scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.08) transparent}.cp-messages::-webkit-scrollbar{width:4px}.cp-messages::-webkit-scrollbar-track{background:transparent}.cp-messages::-webkit-scrollbar-thumb{background:#ffffff14;border-radius:4px}.cp-welcome{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:32px 12px 16px;flex:1;gap:20px}.cp-welcome-icon{display:flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:14px;background:#ffffff0a;border:1px solid rgba(255,255,255,.07);color:#ffffff80;box-shadow:0 0 24px #ffffff08}.cp-welcome-title{font-size:17px;font-weight:600;color:#ffffffbf;line-height:1.4;letter-spacing:-.015em;margin:0}.cp-welcome-file{color:#fffffff2}.cp-welcome-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;width:100%;max-width:340px}.cp-suggestion-chip{padding:10px 12px;font-size:12.5px;font-weight:500;color:#ffffff8c;background:#ffffff08;border:1px solid rgba(255,255,255,.07);border-radius:10px;cursor:pointer;transition:all .2s ease;text-align:left;line-height:1.35;letter-spacing:-.005em}.cp-suggestion-chip:hover:not(:disabled){background:#ffffff0f;border-color:#ffffff21;color:#fffc;box-shadow:0 0 16px #ffffff08}.cp-suggestion-chip:disabled{opacity:.35;cursor:default}.cp-msg{display:flex;gap:10px;max-width:100%;animation:cpFadeIn .25s ease}.cp-msg--user{flex-direction:row-reverse}.cp-msg--assistant{flex-direction:row;align-items:flex-start}@keyframes cpFadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.cp-ai-avatar{display:flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:8px;background:#ffffff0d;border:1px solid rgba(255,255,255,.08);color:#ffffff73;flex-shrink:0;margin-top:2px}.cp-msg-body{display:flex;flex-direction:column;gap:6px;min-width:0;max-width:85%}.cp-bubble--user{background:#ffffff12;border:1px solid rgba(255,255,255,.09);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-radius:14px 14px 4px;padding:10px 14px;box-shadow:0 1px 8px #00000014}.cp-bubble--assistant{background:transparent;padding:2px 0}.cp-user-text{font-size:13.5px;line-height:1.55;color:#ffffffe6;white-space:pre-wrap;word-break:break-word}.cp-markdown{font-size:13.5px;line-height:1.65;color:#ffffffd1}.cp-markdown p{margin:0 0 10px}.cp-markdown p:last-child{margin-bottom:0}.cp-markdown strong{color:#fffffff2;font-weight:600}.cp-markdown em{color:#ffffffb3}.cp-markdown ul,.cp-markdown ol{padding-left:18px;margin:8px 0}.cp-markdown li{margin-bottom:4px}.cp-markdown li::marker{color:#ffffff40}.cp-markdown code{font-size:12px;padding:2px 6px;border-radius:5px;background:#ffffff0f;border:1px solid rgba(255,255,255,.06);color:#fffc;font-family:SF Mono,Fira Code,monospace}.cp-markdown pre{background:#ffffff08;border:1px solid rgba(255,255,255,.06);border-radius:8px;padding:12px;overflow-x:auto;margin:10px 0}.cp-markdown pre code{background:none;border:none;padding:0}.cp-markdown h1,.cp-markdown h2,.cp-markdown h3,.cp-markdown h4{color:#ffffffeb;margin:14px 0 6px;font-weight:600;letter-spacing:-.01em}.cp-markdown h1{font-size:16px}.cp-markdown h2{font-size:15px}.cp-markdown h3{font-size:14px}.cp-markdown h4{font-size:13.5px}.cp-markdown blockquote{border-left:2px solid rgba(255,255,255,.12);margin:8px 0;padding:4px 12px;color:#fff9}.cp-markdown a{color:#ffffffb3;text-decoration:underline;text-decoration-color:#fff3;text-underline-offset:2px}.cp-markdown a:hover{color:#fffffff2}.cp-markdown hr{border:none;border-top:1px solid rgba(255,255,255,.06);margin:14px 0}.cp-quality-dot{display:inline-block;width:6px;height:6px;border-radius:50%;flex-shrink:0;margin-left:2px;opacity:.8}.cp-citations{display:flex;flex-direction:column;gap:2px;padding-top:4px}.cp-cite{font-size:10.5px;color:#ffffff4d;line-height:1.4;letter-spacing:.01em}.cp-followups{display:flex;flex-wrap:nowrap;gap:6px;overflow-x:auto;padding:4px 0 2px;scrollbar-width:none}.cp-followups::-webkit-scrollbar{display:none}.cp-followup-pill{flex-shrink:0;padding:6px 12px;font-size:11.5px;font-weight:500;color:#ffffff73;background:transparent;border:1px solid rgba(255,255,255,.08);border-radius:20px;cursor:pointer;transition:all .2s ease;white-space:nowrap}.cp-followup-pill:hover:not(:disabled){color:#ffffffbf;border-color:#ffffff29;box-shadow:0 0 12px #ffffff0a}.cp-followup-pill:disabled{opacity:.3;cursor:default}.cp-typing{display:flex;gap:5px;padding:6px 4px;align-items:center}.cp-typing span{width:6px;height:6px;border-radius:50%;background:#ffffff40;animation:cpPulse 1.4s ease-in-out infinite}.cp-typing span:nth-child(2){animation-delay:.15s}.cp-typing span:nth-child(3){animation-delay:.3s}@keyframes cpPulse{0%,80%,to{opacity:.25;transform:scale(.85)}40%{opacity:.9;transform:scale(1.1)}}.cp-input-area{flex-shrink:0;padding:12px 16px 14px;border-top:1px solid rgba(255,255,255,.06);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);background:#ffffff05}.cp-input-wrap{display:flex;flex-direction:column;gap:6px;background:#ffffff0a;border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:10px 12px 8px;transition:border-color .2s ease,box-shadow .2s ease}.cp-input-wrap:focus-within{border-color:#ffffff29;box-shadow:0 0 20px #ffffff08}.cp-textarea{width:100%;background:transparent;border:none;outline:none;resize:none;font-size:13.5px;line-height:1.5;color:#ffffffe0;font-family:inherit;min-height:20px;max-height:120px}.cp-textarea::placeholder{color:#ffffff38;font-weight:400}.cp-textarea:disabled{opacity:.4}.cp-input-footer{display:flex;align-items:center;justify-content:space-between}.cp-char-count{font-size:10.5px;color:#ffffff2e;font-variant-numeric:tabular-nums;letter-spacing:.02em}.cp-send-btn{display:flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:50%;border:none;background:#ffffffe0;color:#000000d9;cursor:pointer;transition:all .2s ease}.cp-send-btn:hover:not(:disabled){background:#fff;box-shadow:0 0 16px #ffffff26}.cp-send-btn:disabled{background:#ffffff14;color:#fff3;cursor:default}html.light-mode .cp-header{border-bottom-color:#0000000f;background:#fff9}html.light-mode .cp-header-file{color:#000000d1}html.light-mode .cp-header-powered{color:#0000004d}html.light-mode .cp-reset-btn{border-color:#00000014;background:#00000005;color:#00000059}html.light-mode .cp-reset-btn:hover:not(:disabled){background:#0000000d;color:#0009;border-color:#0000001f}html.light-mode .cp-messages{scrollbar-color:rgba(0,0,0,.08) transparent}html.light-mode .cp-messages::-webkit-scrollbar-thumb{background:#00000014}html.light-mode .cp-welcome-icon{background:#00000008;border-color:#00000012;color:#0006}html.light-mode .cp-welcome-title{color:#0009}html.light-mode .cp-welcome-file{color:#000000e0}html.light-mode .cp-suggestion-chip{color:#00000080;background:#00000005;border-color:#00000012}html.light-mode .cp-suggestion-chip:hover:not(:disabled){background:#0000000d;border-color:#00000021;color:#000000bf;box-shadow:0 0 12px #00000008}html.light-mode .cp-ai-avatar{background:#0000000a;border-color:#00000012;color:#0006}html.light-mode .cp-bubble--user{background:#0000000a;border-color:#00000012}html.light-mode .cp-user-text{color:#000000d1}html.light-mode .cp-markdown{color:#000000b8}html.light-mode .cp-markdown strong{color:#000000e6}html.light-mode .cp-markdown em{color:#0009}html.light-mode .cp-markdown li::marker{color:#0003}html.light-mode .cp-markdown code{background:#0000000a;border-color:#0000000f;color:#000000bf}html.light-mode .cp-markdown pre{background:#00000005;border-color:#0000000f}html.light-mode .cp-markdown h1,html.light-mode .cp-markdown h2,html.light-mode .cp-markdown h3,html.light-mode .cp-markdown h4{color:#000000e0}html.light-mode .cp-markdown blockquote{border-left-color:#0000001a;color:#00000080}html.light-mode .cp-markdown a{color:#0009;text-decoration-color:#00000026}html.light-mode .cp-markdown a:hover{color:#000000e6}html.light-mode .cp-markdown hr{border-top-color:#0000000f}html.light-mode .cp-cite{color:#0000004d}html.light-mode .cp-followup-pill{color:#0006;border-color:#00000014}html.light-mode .cp-followup-pill:hover:not(:disabled){color:#000000b3;border-color:#00000029;box-shadow:0 0 10px #00000008}html.light-mode .cp-typing span{background:#0003}html.light-mode .cp-input-area{border-top-color:#0000000f;background:#ffffffb3}html.light-mode .cp-input-wrap{background:#00000005;border-color:#00000014}html.light-mode .cp-input-wrap:focus-within{border-color:#00000029;box-shadow:0 0 16px #00000008}html.light-mode .cp-textarea{color:#000000d1}html.light-mode .cp-textarea::placeholder{color:#00000040}html.light-mode .cp-char-count{color:#0003}html.light-mode .cp-send-btn{background:#000000d1;color:#fff}html.light-mode .cp-send-btn:hover:not(:disabled){background:#000;box-shadow:0 0 12px #0000001a}html.light-mode .cp-send-btn:disabled{background:#0000000f;color:#0003}:root{--tn-bg-page: #0c0c0d;--tn-bg-surface: #131315;--tn-bg-raised: #1b1b1e;--tn-bg-input: #18181b;--tn-border-hairline: rgba(255, 255, 255, .06);--tn-border-soft: rgba(255, 255, 255, .1);--tn-border-strong: rgba(255, 255, 255, .18);--tn-border-focus: rgba(255, 255, 255, .4);--tn-text-primary: #fafaf7;--tn-text-secondary: rgba(250, 250, 247, .72);--tn-text-tertiary: rgba(250, 250, 247, .48);--tn-text-faint: rgba(250, 250, 247, .28);--tn-accent: #fafaf7;--tn-accent-fg: #0c0c0d;--tn-radius-sm: 8px;--tn-radius-md: 12px;--tn-radius-lg: 16px;--tn-radius-pill: 999px;--tn-shadow-elev-1: 0 1px 0 rgba(255,255,255,.04) inset, 0 1px 2px rgba(0,0,0,.4);--tn-shadow-elev-2: 0 1px 0 rgba(255,255,255,.06) inset, 0 8px 24px rgba(0,0,0,.5);--tn-shadow-focus: 0 0 0 2px rgba(250,250,247,.18);--tn-font-stack: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Helvetica, Arial, sans-serif;--tn-font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace}[data-tonight]{font-family:var(--tn-font-stack);color:var(--tn-text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:var(--tn-bg-page);letter-spacing:-.005em}[data-tonight] *,[data-tonight] *:before,[data-tonight] *:after{box-sizing:border-box}.tn-login{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;display:grid;place-items:center;background:radial-gradient(1200px 800px at 50% -10%,rgba(255,255,255,.04),transparent 60%),var(--tn-bg-page);padding:24px;overflow:auto}.tn-login__card{width:100%;max-width:380px;text-align:center;animation:tn-fade-up .6s cubic-bezier(.2,.8,.2,1)}.tn-login__brand{display:inline-flex;align-items:center;gap:10px;padding:8px 16px;border-radius:var(--tn-radius-pill);background:var(--tn-bg-surface);border:1px solid var(--tn-border-hairline);font-size:12px;color:var(--tn-text-secondary);letter-spacing:.04em;text-transform:uppercase;margin-bottom:28px}.tn-login__brand-mark{width:6px;height:6px;border-radius:50%;background:var(--tn-text-primary);animation:tn-pulse 2.4s ease-in-out infinite}.tn-login__title{font-size:32px;font-weight:600;letter-spacing:-.02em;margin:0 0 12px;line-height:1.2}.tn-login__subtitle{font-size:15px;color:var(--tn-text-secondary);margin:0 0 36px;line-height:1.5}.tn-login__google{display:flex;align-items:center;justify-content:center;gap:12px;width:100%;padding:14px 20px;background:var(--tn-accent);color:var(--tn-accent-fg);border:0;border-radius:var(--tn-radius-md);font-family:inherit;font-size:15px;font-weight:500;letter-spacing:-.005em;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,opacity .2s ease;box-shadow:var(--tn-shadow-elev-2)}.tn-login__google:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 12px 32px #0009,0 1px #ffffff14 inset}.tn-login__google:active:not(:disabled){transform:translateY(0)}.tn-login__google:disabled{opacity:.6;cursor:not-allowed}.tn-login__google-icon{flex:0 0 18px;height:18px;width:18px}.tn-login__hint{margin-top:24px;font-size:12px;color:var(--tn-text-tertiary);line-height:1.6}.tn-login__hint a{color:var(--tn-text-secondary);text-decoration:none;border-bottom:1px solid var(--tn-border-soft);transition:color .15s ease,border-color .15s ease}.tn-login__hint a:hover{color:var(--tn-text-primary);border-bottom-color:var(--tn-border-strong)}.tn-login__error{margin-top:16px;padding:10px 14px;background:#dc5a5a14;border:1px solid rgba(220,90,90,.24);border-radius:var(--tn-radius-sm);color:#ffc8c8eb;font-size:13px;text-align:left}.tn-drop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:999;display:grid;place-items:center;background:var(--tn-bg-page);padding:24px;overflow:auto}.tn-drop__card{width:100%;max-width:540px;text-align:center;animation:tn-fade-up .6s cubic-bezier(.2,.8,.2,1)}.tn-drop__greeting{font-size:13px;color:var(--tn-text-tertiary);letter-spacing:.04em;text-transform:uppercase;margin-bottom:12px}.tn-drop__title{font-size:28px;font-weight:600;letter-spacing:-.02em;margin:0 0 8px;line-height:1.25}.tn-drop__subtitle{font-size:15px;color:var(--tn-text-secondary);margin:0 0 32px}.tn-drop__zone{position:relative;padding:56px 32px;background:var(--tn-bg-surface);border:1.5px dashed var(--tn-border-soft);border-radius:var(--tn-radius-lg);cursor:pointer;transition:border-color .2s ease,background .2s ease,transform .2s ease}.tn-drop__zone:hover,.tn-drop__zone--active{border-color:var(--tn-border-focus);background:var(--tn-bg-raised);transform:scale(1.005)}.tn-drop__zone--active{border-style:solid}.tn-drop__zone-icon{width:48px;height:48px;margin:0 auto 16px;display:grid;place-items:center;color:var(--tn-text-secondary)}.tn-drop__zone-primary{font-size:16px;font-weight:500;color:var(--tn-text-primary);margin-bottom:4px}.tn-drop__zone-secondary{font-size:13px;color:var(--tn-text-tertiary)}.tn-drop__zone-input{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;opacity:0;cursor:pointer}.tn-drop__hint{margin-top:24px;font-size:12px;color:var(--tn-text-tertiary)}.tn-drop__skip{margin-top:0;background:none;border:0;color:var(--tn-text-tertiary);font-family:inherit;font-size:13px;cursor:pointer;padding:6px 12px;border-radius:var(--tn-radius-sm);transition:color .15s ease,background .15s ease}.tn-drop__skip:hover{color:var(--tn-text-secondary);background:var(--tn-bg-surface)}.tn-drop__steps{margin-top:22px;display:flex;flex-wrap:wrap;justify-content:center;gap:18px;font-size:12px;color:var(--tn-text-tertiary)}.tn-drop__steps b{color:var(--tn-text-secondary);font-weight:600;margin-right:4px}.tn-drop__actions{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;align-items:center;margin-top:18px}.tn-drop__sample{display:inline-flex;align-items:center;gap:6px;background:var(--tn-bg-surface);border:1px solid var(--tn-border-hairline);color:var(--tn-text-secondary);font-family:inherit;font-size:13px;cursor:pointer;padding:8px 14px;border-radius:var(--tn-radius-sm);transition:color .15s ease,background .15s ease,border-color .15s ease}.tn-drop__sample:hover:not(:disabled){color:var(--tn-text-primary);background:var(--tn-bg-elevated, var(--tn-bg-surface));border-color:var(--tn-border-strong, var(--tn-border-hairline))}.tn-drop__sample:disabled{opacity:.4;cursor:not-allowed}.ocr-progress-overlay{position:fixed;top:14px;left:50%;transform:translate(-50%);z-index:60;pointer-events:none}.ocr-progress-card{pointer-events:auto;display:flex;align-items:flex-start;gap:12px;min-width:320px;max-width:460px;padding:12px 14px;background:#0c0c0deb;color:#fafaf7;border:1px solid rgba(250,250,247,.12);border-radius:12px;box-shadow:0 12px 30px #00000059;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);font-family:inherit}.ocr-progress-card--error{border-color:#dc783c8c}.ocr-progress-icon{flex-shrink:0;width:28px;height:28px;border-radius:8px;background:#fafaf714;display:flex;align-items:center;justify-content:center;color:#fafaf7}.ocr-progress-body{flex:1;min-width:0}.ocr-progress-headline{font-size:13px;font-weight:600;letter-spacing:-.01em}.ocr-progress-sub{font-size:12px;color:#fafaf79e;margin-top:2px}.ocr-progress-track{margin-top:10px;height:4px;background:#fafaf714;border-radius:99px;overflow:hidden}.ocr-progress-fill{height:100%;background:#fafaf7d9;transition:width .22s ease}.ocr-progress-fill--done{background:#8cc88cd9}.ocr-progress-close{flex-shrink:0;background:none;border:0;color:#fafaf78c;cursor:pointer;padding:4px;border-radius:6px;transition:color .15s ease,background .15s ease}.ocr-progress-close:hover{color:#fafaf7;background:#fafaf714}.tn-drop__progress{margin-top:24px;padding:16px 20px;background:var(--tn-bg-surface);border:1px solid var(--tn-border-hairline);border-radius:var(--tn-radius-md);text-align:left}.tn-drop__progress-label{font-size:13px;color:var(--tn-text-secondary);margin-bottom:10px;display:flex;justify-content:space-between;align-items:center}.tn-drop__progress-bar{height:4px;background:#ffffff0f;border-radius:2px;overflow:hidden}.tn-drop__progress-fill{height:100%;background:var(--tn-text-primary);transition:width .2s ease}.tn-byo{width:320px;background:var(--tn-bg-raised);border:1px solid var(--tn-border-hairline);border-radius:var(--tn-radius-md);padding:16px;box-shadow:var(--tn-shadow-elev-2);color:var(--tn-text-primary);font-family:var(--tn-font-stack)}.tn-byo__title{font-size:13px;font-weight:600;margin:0 0 6px;letter-spacing:-.005em}.tn-byo__desc{font-size:12px;color:var(--tn-text-tertiary);margin:0 0 12px;line-height:1.5}.tn-byo__input{width:100%;padding:9px 12px;background:var(--tn-bg-input);border:1px solid var(--tn-border-hairline);border-radius:var(--tn-radius-sm);color:var(--tn-text-primary);font-family:var(--tn-font-mono);font-size:12px;outline:none;transition:border-color .15s ease}.tn-byo__input:focus{border-color:var(--tn-border-focus)}.tn-byo__row{display:flex;gap:8px;margin-top:12px}.tn-byo__btn{flex:1;padding:8px 12px;background:var(--tn-accent);color:var(--tn-accent-fg);border:0;border-radius:var(--tn-radius-sm);font-family:inherit;font-size:12px;font-weight:500;cursor:pointer;transition:opacity .15s ease}.tn-byo__btn:hover{opacity:.9}.tn-byo__btn:disabled{opacity:.5;cursor:not-allowed}.tn-byo__btn--ghost{background:transparent;color:var(--tn-text-secondary);border:1px solid var(--tn-border-hairline)}.tn-byo__btn--ghost:hover{background:var(--tn-bg-surface);color:var(--tn-text-primary)}.tn-byo__status{margin-top:10px;font-size:11px;color:var(--tn-text-tertiary)}.tn-byo__status--saved{color:#8cdca0e6}.tn-cp-actions{display:inline-flex;align-items:center;gap:6px}.tn-cp-action-btn{display:inline-flex;align-items:center;gap:6px;padding:5px 10px;background:#ffffff0a;border:1px solid var(--tn-border-hairline);border-radius:var(--tn-radius-sm);color:var(--tn-text-secondary);font-family:var(--tn-font-stack);font-size:11px;font-weight:500;cursor:pointer;transition:background .15s ease,color .15s ease,border-color .15s ease}.tn-cp-action-btn:hover:not(:disabled){background:#ffffff14;color:var(--tn-text-primary);border-color:var(--tn-border-soft)}.tn-cp-action-btn:disabled{opacity:.4;cursor:not-allowed}.tn-cp-action-btn--icon{padding:5px 7px}.tn-cp-action-btn--active{background:#fafaf71a;color:var(--tn-text-primary);border-color:var(--tn-border-soft)}.tn-cp-byo-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:flex-start;justify-content:flex-end;padding:56px 16px 16px;background:#0c0c0d8c;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);z-index:40;animation:tn-fade-up .18s ease both}.tn-cp-byo-overlay>[data-tonight]{width:min(360px,100%)}@keyframes tn-fade-up{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes tn-pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.85)}}@keyframes tn-spin{to{transform:rotate(360deg)}}.tn-spinner{display:inline-block;width:14px;height:14px;border:2px solid var(--tn-border-soft);border-top-color:var(--tn-text-primary);border-radius:50%;animation:tn-spin .7s linear infinite}@media (prefers-reduced-motion: reduce){[data-tonight] *,[data-tonight] *:before,[data-tonight] *:after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}}