@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&family=Fira+Code:wght@400;500&display=swap";:root{--bg-primary:#f6f8fa;--bg-secondary:#fff;--bg-tertiary:#f1f5f9;--card-bg:#ffffffd9;--card-border:rgba(var(--accent-primary-rgb), .08);--card-border-hover:rgba(var(--accent-primary-rgb), .25);--accent-primary-rgb:99, 102, 241;--accent-primary:rgb(var(--accent-primary-rgb));--accent-primary-glow:rgba(var(--accent-primary-rgb), .12);--accent-hover:#4f46e5;--accent-secondary:#ec4899;--header-bg:#ffffffd9;--text-primary:#0f172a;--text-secondary:#475569;--text-muted:#64748b;--border-input:#cbd5e1;--status-success:#10b981;--status-success-bg:#10b9810f;--status-success-border:#10b98140;--status-danger:#ef4444;--status-danger-bg:#ef44440d;--status-danger-border:#ef444433;--status-warning:#b45309;--subject-algo-rgb:37, 99, 235;--subject-algo:rgb(var(--subject-algo-rgb));--subject-toc-rgb:225, 29, 72;--subject-toc:rgb(var(--subject-toc-rgb));--subject-os-rgb:124, 58, 237;--subject-os:rgb(var(--subject-os-rgb));--subject-db-rgb:202, 138, 4;--subject-db:rgb(var(--subject-db-rgb));--subject-cn-rgb:8, 145, 178;--subject-cn:rgb(var(--subject-cn-rgb));--subject-coa-rgb:234, 88, 12;--subject-coa:rgb(var(--subject-coa-rgb));--subject-compiler-rgb:5, 150, 105;--subject-compiler:rgb(var(--subject-compiler-rgb));--subject-ds-rgb:219, 39, 119;--subject-ds:rgb(var(--subject-ds-rgb));--subject-math-rgb:147, 51, 234;--subject-math:rgb(var(--subject-math-rgb));--subject-digital-rgb:13, 148, 136;--subject-digital:rgb(var(--subject-digital-rgb));--sidebar-width:260px;--header-height:70px;--border-radius:12px;--transition-smooth:all .25s cubic-bezier(.4, 0, .2, 1);--shadow-glow:0 10px 30px rgba(var(--accent-primary-rgb), .04);--font-sans:"Inter", sans-serif;--font-display:"Outfit", sans-serif;--font-mono:"Fira Code", 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cubic-bezier(.4,0,.2,1);display:flex;overflow-x:hidden}.glass-panel{background:var(--card-bg);-webkit-backdrop-filter:blur(12px);border:1px solid var(--card-border);border-radius:var(--border-radius);box-shadow:var(--shadow-glow), 0 4px 6px -1px #00000005}.glass-card{background:var(--card-bg);-webkit-backdrop-filter:blur(8px);border:1px solid var(--card-border);border-radius:var(--border-radius);transition:var(--transition-smooth);padding:20px;box-shadow:0 1px 3px #00000005,0 1px 2px -1px #00000005}.glass-card:hover{border-color:var(--card-border-hover);box-shadow:0 12px 30px rgba(var(--accent-primary-rgb), .06), 0 4px 6px -1px #0000000a;transform:translateY(-2px)}.sidebar-container{width:var(--sidebar-width);z-index:100;transition:width .3s cubic-bezier(.4,0,.2,1);position:fixed;top:0;bottom:0;left:0}.sidebar{background-color:var(--bg-secondary);box-sizing:border-box;border-right:1px solid #e2e8f0;flex-direction:column;gap:32px;width:100%;height:100%;padding:24px 16px;transition:width 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.sidebar-user-footer>div>div{gap:0!important;padding-left:13px!important}.app-container.sidebar-collapsed .sidebar-container:not(:hover) .sidebar-user-footer button,.app-container.sidebar-collapsed .sidebar-container:not(:hover) .sidebar-user-footer>button{gap:0!important;max-width:40px!important;padding:10px 11px!important}}@media (width<=1024px){.sidebar-container{display:contents}.sidebar-collapse-toggle{display:none!important}}.top-header{height:var(--header-height);background-color:var(--header-bg);-webkit-backdrop-filter:blur(10px);z-index:90;border-bottom:1px solid #e2e8f0;justify-content:space-between;align-items:center;padding:0 32px;display:flex;position:sticky;top:0}.search-bar-container{width:400px;transition:var(--transition-smooth);position:relative}.search-bar-container:focus-within{width:440px}.search-input{background:var(--bg-tertiary);width:100%;color:var(--text-primary);transition:var(--transition-smooth);border:1px solid #e2e8f0;border-radius:20px;padding:10px 44px 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.25);transform:translateY(-1px)}.btn-secondary{color:var(--text-primary);cursor:pointer;transition:var(--transition-smooth);background:0 0;border:1px solid #cbd5e1;border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:12px 24px;font-weight:600;display:flex}.btn-secondary:hover{background:var(--bg-tertiary);border-color:var(--text-secondary)}.card-badges-container{flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:8px;display:flex}.badge-premium{font-family:var(--font-sans);text-transform:uppercase;letter-spacing:.6px;border:1px solid #0000;border-radius:6px;align-items:center;gap:6px;padding:4px 10px;font-size:.68rem;font-weight:700;line-height:1;transition:all .2s;display:inline-flex}.badge-premium svg{flex-shrink:0;width:12px;height:12px}.subject-pill{font-family:var(--font-sans);text-transform:uppercase;letter-spacing:.6px;border-radius:6px;align-items:center;padding:4px 10px;font-size:.68rem;font-weight:700;line-height:1;transition:all .2s;display:inline-flex}.badge-exam{color:var(--accent-primary);background:rgba(var(--accent-primary-rgb), .08);border:1px solid rgba(var(--accent-primary-rgb), .15)}body.dark-mode .badge-exam{color:#a5b4fc;background:#a5b4fc14;border:1px solid #a5b4fc33}.badge-qtype{color:var(--status-success);background:#10b98114;border:1px solid #10b98126}body.dark-mode .badge-qtype{color:#34d399;background:#34d39914;border:1px solid #34d39933}.badge-saved{color:var(--status-warning);background:#f59e0b14;border:1px solid #f59e0b26}body.dark-mode .badge-saved{color:#fbbf24;background:#fbbf2414;border:1px solid #fbbf2433}.badge-resolved{color:var(--status-success);background:#10b98114;border:1px solid #10b98126}body.dark-mode .badge-resolved{color:#34d399;background:#34d39914;border:1px solid #34d39933}.badge-unresolved{color:#fb7185;background:#f43f5e0f;border:1px solid #f43f5e26}body.dark-mode .badge-unresolved{color:#fda4af;background:#fda4af14;border:1px solid #fda4af33}.tag-chip{background:rgba(var(--accent-primary-rgb), .04);color:var(--accent-hover);border:1px solid rgba(var(--accent-primary-rgb), .08);letter-spacing:.2px;transition:var(--transition-smooth);cursor:pointer;border-radius:6px;align-items:center;padding:4px 10px;font-size:.72rem;font-weight:600;display:inline-flex}body.dark-mode .tag-chip{background:rgba(var(--accent-primary-rgb), .06);color:#a5b4fc;border-color:rgba(var(--accent-primary-rgb), .15)}.tag-chip:hover{background:rgba(var(--accent-primary-rgb), .08);border-color:var(--accent-primary);color:var(--accent-primary);text-decoration:none}body.dark-mode .tag-chip:hover{color:#c7d2fe;background:#a5b4fc1f;border-color:#a5b4fc}.question-card{gap:24px;margin-bottom:16px;display:flex}.stats-column{min-width:75px;font-family:var(--font-display);flex-direction:column;align-items:center;gap:8px;display:flex}.stat-item{border-radius:8px;flex-direction:column;justify-content:center;align-items:center;width:100%;padding:6px;display:flex}.stat-item.votes{color:var(--accent-primary);background:rgba(var(--accent-primary-rgb), .04);border:1px solid rgba(var(--accent-primary-rgb), .08)}.stat-item.votes.voted{color:#fff;background:var(--accent-primary)}.stat-item.answers{color:var(--text-secondary);border:1px solid #0000}.stat-item.answers.has-answers{color:var(--accent-primary);background:rgba(var(--accent-primary-rgb), .04);border:1px solid rgba(var(--accent-primary-rgb), .1)}.stat-item.answers.solved{color:var(--status-success);background:var(--status-success-bg);border:1px solid 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expand-drawer{0%{opacity:0;max-height:0;overflow:hidden}to{opacity:1;max-height:1000px}}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@media (width<=640px){.interactive-quiz-container{padding:20px}.quiz-header{flex-direction:column;align-items:flex-start}.quiz-controls{justify-content:space-between;width:100%}.summary-score-header{flex-direction:column;padding:20px}.summary-feedback-section{text-align:center;max-width:100%}}