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#276749;--btn-primary-purple: #553c9a;--btn-primary-amber: #975a16;--btn-primary-red: #9b2c2c}[data-theme=light]{--bg: #f4f4f8;--bg-card: #ffffff;--bg-elevated: #f0f0f5;--bg-hover: #e8e8f0;--border: rgba(0,0,0,.08);--border-hover: rgba(0,0,0,.16);--border-accent: rgba(37,99,235,.3);--text-primary: #0f0f1a;--text-secondary: #52526e;--text-muted: #9898b0;--accent: #2563eb;--accent-dim: rgba(37,99,235,.08);--accent-hover: rgba(37,99,235,.14);--green: #16a34a;--green-dim: rgba(22,163,74,.08);--amber: #d97706;--amber-dim: rgba(217,119,6,.08);--red: #dc2626;--red-dim: rgba(220,38,38,.08);--purple: #7c3aed;--purple-dim: rgba(124,58,237,.08);--shadow-sm: 0 1px 3px rgba(0,0,0,.08);--shadow-md: 0 4px 16px rgba(0,0,0,.1);--btn-primary-bg: #2563eb;--btn-primary-bg-hover: #1d4ed8;--btn-primary-green: #16a34a;--btn-primary-purple: #7c3aed;--btn-primary-amber: #d97706;--btn-primary-red: #dc2626}html{transition:background-color .25s ease,color .25s 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svg{opacity:1}.topbar{display:none;align-items:center;justify-content:space-between;padding:0 1rem;height:52px;background:var(--bg-card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:30;flex-shrink:0}.hamburger{display:flex;flex-direction:column;gap:4px;cursor:pointer;padding:7px;border-radius:var(--radius-md);border:1px solid var(--border);background:var(--bg-elevated)}.hamburger span{display:block;width:18px;height:2px;background:var(--text-primary);border-radius:2px}.topbar-brand{font-family:var(--font-display);font-size:16px;font-weight:800;color:var(--text-primary);cursor:pointer;-webkit-user-select:none;user-select:none}.topbar-brand:hover{opacity:.8}.topbar-brand span{color:var(--accent)}.main-wrapper{flex:1;display:flex;flex-direction:column;overflow:hidden;min-width:0}.main{flex:1;overflow-y:auto;padding:2rem 2.5rem;max-width:960px;width:100%}.page-header{margin-bottom:1.5rem}.page-header h2{font-family:var(--font-display);font-size:22px;font-weight:700;letter-spacing:-.5px}.page-header p{font-size:13px;color:var(--text-secondary);margin-top:4px}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:1.75rem}.stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1rem 1.1rem;box-shadow:var(--shadow-sm);transition:border-color var(--transition)}.stat-card:hover{border-color:var(--border-hover)}.stat-card .label{font-size:10px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.06em;margin-bottom:5px;display:flex;align-items:center;gap:5px}.stat-card .value{font-family:var(--font-display);font-size:26px;font-weight:700;color:var(--text-primary)}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1rem 1.1rem;margin-bottom:10px;transition:border-color var(--transition),background var(--transition);box-shadow:var(--shadow-sm)}.card:hover{border-color:var(--border-hover);background:var(--bg-elevated)}.card.clickable{cursor:pointer}.card-top{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}.card-title{font-size:14px;font-weight:500;line-height:1.5;flex:1}.card-meta{display:flex;align-items:center;gap:8px;margin-top:8px;flex-wrap:wrap}.card-meta span{font-size:12px;color:var(--text-muted)}.badge{display:inline-flex;align-items:center;gap:4px;font-size:11px;font-weight:600;padding:3px 8px;border-radius:20px;white-space:nowrap;flex-shrink:0}.badge-mcq{background:var(--purple-dim);color:var(--purple);border:1px solid rgba(124,58,237,.2)}.badge-written{background:var(--green-dim);color:var(--green);border:1px solid rgba(22,163,74,.2)}.badge-easy{background:var(--green-dim);color:var(--green)}.badge-medium{background:var(--amber-dim);color:var(--amber)}.badge-hard{background:var(--red-dim);color:var(--red)}.badge-active{background:var(--green-dim);color:var(--green);border:1px solid rgba(22,163,74,.2)}.badge-expired{background:var(--red-dim);color:var(--red);border:1px solid rgba(220,38,38,.2)}.badge-upcoming{background:var(--accent-dim);color:var(--accent);border:1px solid var(--border-accent)}.tag{display:inline-block;font-size:11px;padding:2px 8px;border-radius:20px;background:var(--accent-dim);color:var(--accent);margin-right:4px;margin-bottom:2px}.toolbar{display:flex;gap:10px;margin-bottom:1.25rem;flex-wrap:wrap}.toolbar input{flex:1;min-width:150px}.toolbar select{min-width:130px;width:auto}.filter-pills{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:1.25rem}.pill{padding:5px 12px;border-radius:20px;border:1px solid var(--border);font-size:12px;font-weight:500;color:var(--text-secondary);cursor:pointer;transition:all var(--transition);background:var(--bg-card)}.pill:hover{border-color:var(--border-hover);color:var(--text-primary)}.pill.active{background:var(--btn-primary-bg);color:#fff;border-color:var(--btn-primary-bg)}.options-wrap{margin-top:12px}.mcq-option{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:var(--radius-md);border:1px solid var(--border);font-size:13px;cursor:pointer;margin-bottom:7px;transition:all var(--transition);background:var(--bg-elevated)}.mcq-option:hover{border-color:var(--border-hover);background:var(--bg-hover)}.mcq-option.correct{border-color:var(--green);background:var(--green-dim);color:var(--green)}.mcq-option.wrong{border-color:var(--red);background:var(--red-dim);color:var(--red)}.mcq-option.disabled{pointer-events:none;opacity:.6}.opt-letter{width:24px;height:24px;border-radius:50%;border:1px solid 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var(--transition)}.circular-card:hover{border-color:var(--border-hover)}.circular-header{display:flex;align-items:flex-start;gap:10px;margin-bottom:10px}.org-avatar{width:38px;height:38px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-size:11px;font-weight:700;flex-shrink:0}.circular-title{font-size:14px;font-weight:500;line-height:1.4}.circular-meta{font-size:12px;color:var(--text-muted);margin-top:3px;line-height:1.5}.circular-footer{display:flex;align-items:center;justify-content:space-between;margin-top:10px;flex-wrap:wrap;gap:8px}.topics-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px;margin-bottom:1.5rem}.topic-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1rem 1.1rem;cursor:pointer;transition:all var(--transition);box-shadow:var(--shadow-sm)}.topic-card:hover{border-color:var(--accent);transform:translateY(-1px)}.topic-icon{width:36px;height:36px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:18px;margin-bottom:8px}.topic-name{font-size:14px;font-weight:600;font-family:var(--font-display)}.topic-count{font-size:12px;color:var(--text-muted);margin-top:2px}.topic-desc{font-size:12px;color:var(--text-secondary);margin-top:6px;line-height:1.5}.subtopic-item{display:flex;gap:10px;align-items:flex-start;padding:8px 0;border-bottom:1px solid var(--border);font-size:13px}.subtopic-item:last-child{border-bottom:none}.subtopic-num{font-size:11px;font-weight:700;color:var(--accent);min-width:20px;margin-top:2px}.resource-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1rem 1.1rem;margin-bottom:10px;box-shadow:var(--shadow-sm);transition:border-color var(--transition);cursor:pointer}.resource-card:hover{border-color:var(--accent)}.resource-header{display:flex;align-items:flex-start;gap:12px}.resource-icon{width:42px;height:42px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;flex-shrink:0}.resource-icon.pdf{background:#dc26261f;color:var(--red)}.resource-icon.docx,.resource-icon.doc{background:#2b6cb01f;color:var(--btn-primary-bg)}.resource-icon.image{background:#16a34a1f;color:var(--green)}.resource-icon.other{background:var(--accent-dim);color:var(--accent)}.resource-title{font-size:14px;font-weight:500;line-height:1.4}.resource-meta{font-size:12px;color:var(--text-muted);margin-top:3px;line-height:1.5}.resource-footer{display:flex;align-items:center;justify-content:space-between;margin-top:10px;flex-wrap:wrap;gap:8px}.preview-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:600;padding:1rem;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.preview-modal{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-xl);width:100%;max-width:880px;height:90vh;display:flex;flex-direction:column;overflow:hidden;box-shadow:var(--shadow-md)}.preview-modal-header{display:flex;align-items:center;justify-content:space-between;padding:.9rem 1.1rem;border-bottom:1px solid var(--border);flex-shrink:0}.preview-modal-body{flex:1;overflow:auto;display:flex;align-items:center;justify-content:center;background:var(--bg)}.preview-modal-body iframe,.preview-modal-body img{width:100%;height:100%;border:none;object-fit:contain}.upload-dropzone{border:1.5px dashed var(--border);border-radius:var(--radius-md);padding:1.25rem;text-align:center;cursor:pointer;transition:all var(--transition);background:var(--bg-elevated)}.upload-dropzone:hover,.upload-dropzone.drag-over{border-color:var(--accent);background:var(--accent-dim)}.upload-dropzone input[type=file]{display:none}.btn{display:inline-flex;align-items:center;gap:7px;padding:8px 14px;border-radius:var(--radius-md);font-size:13px;font-weight:500;cursor:pointer;transition:all var(--transition);border:1px solid var(--border);color:var(--text-secondary);background:var(--bg-card);white-space:nowrap}.btn:hover{border-color:var(--border-hover);color:var(--text-primary);background:var(--bg-elevated)}.btn-primary{background:var(--btn-primary-bg);color:#fff;border-color:var(--btn-primary-bg);font-weight:600}.btn-primary:hover{background:var(--btn-primary-bg-hover);border-color:var(--btn-primary-bg-hover);opacity:1;color:#fff}.btn-sm{padding:5px 10px;font-size:12px}.btn-danger{color:var(--red);border-color:#dc262633}.btn-danger:hover{background:var(--red-dim);border-color:var(--red)}.btn-secondary{color:var(--btn-primary-bg);border-color:#2b6cb040}.btn-secondary:hover{background:#2b6cb014;border-color:var(--btn-primary-bg)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:500;padding:1rem;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.modal{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-xl);padding:1.5rem;width:100%;max-width:560px;max-height:90vh;overflow-y:auto;overflow-x:visible;box-shadow:var(--shadow-md)}.modal h3{font-family:var(--font-display);font-size:17px;font-weight:700;margin-bottom:1.25rem}.form-group{margin-bottom:1rem}.form-group label{display:block;font-size:12px;color:var(--text-secondary);margin-bottom:5px;font-weight:500}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.divider{height:1px;background:var(--border);margin:1.25rem 0}.loading,.empty{text-align:center;padding:3rem;color:var(--text-muted);font-size:13px}.pagination{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:1.5rem;flex-wrap:wrap}.page-btn{width:34px;height:34px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-md);border:1px solid var(--border);font-size:13px;cursor:pointer;color:var(--text-secondary);background:var(--bg-card);transition:all var(--transition)}.page-btn:hover{border-color:var(--border-hover);color:var(--text-primary)}.page-btn.active{background:var(--accent);color:#fff;border-color:var(--accent);font-weight:600}.page-btn:disabled{opacity:.35;pointer-events:none}.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:1rem}.section-head h3{font-family:var(--font-display);font-size:15px;font-weight:700}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .22s ease}@media (max-width: 900px){.stats-grid{grid-template-columns:repeat(2,1fr)}.main{padding:1.5rem 1.25rem}.form-row{grid-template-columns:1fr}}@media (max-width: 640px){.topbar,.sidebar-close{display:flex}.sidebar{position:fixed;top:0;left:0;bottom:0;transform:translate(-100%);transition:transform .28s ease;box-shadow:var(--shadow-md);height:100vh}.sidebar.open{transform:translate(0)}.main{padding:1rem;max-width:100%}.stats-grid{grid-template-columns:repeat(2,1fr);gap:8px}.stat-card{padding:.75rem}.stat-card .value{font-size:22px}.page-header{flex-direction:column!important;align-items:flex-start!important;gap:10px}.page-header h2{font-size:18px}.toolbar{flex-direction:column}.toolbar input,.toolbar select{width:100%;min-width:unset}.card{padding:.85rem}.circular-footer{flex-direction:column;align-items:flex-start}.topics-grid{grid-template-columns:repeat(2,1fr);gap:8px}.modal-overlay{padding:0;align-items:flex-end}.modal{border-radius:var(--radius-xl) var(--radius-xl) 0 0;max-height:92vh}.form-row{grid-template-columns:1fr}.filter-pills{gap:5px}.pill{padding:4px 10px;font-size:11px}}@media (max-width: 380px){.stats-grid{grid-template-columns:repeat(2,1fr);gap:6px}.main{padding:.75rem}.topics-grid{grid-template-columns:1fr 1fr}}