:root{--bg: #111;--panel: #141414;--panel-2: #181818;--border: #222;--text: #FAFAFA;--muted: #B3B3B3;--brand: #666;--brand-2: #777;--accent: #9A9A9A;--danger: #dc2626;--btn-bg: #1A1A1A;--btn-bg-hover: #2A2A2A;--focus: rgba(250,250,250,.2);--success: #16a34a}*{box-sizing:border-box}body,html,#root{height:100%;background:#111;color:var(--text);margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Inter,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}.app{min-height:100vh;display:flex;flex-direction:column}.navbar{padding:14px 20px;border-bottom:1px solid var(--border);background:var(--panel);display:flex;align-items:center;gap:14px;-webkit-user-select:none;user-select:none}.navbar h1{margin:0;font-weight:700;letter-spacing:.5px;color:var(--text);cursor:pointer}.navbar h1:active{opacity:.85}.upload-container{margin:30px auto 40px;width:min(880px,94vw);display:flex;flex-direction:column;gap:18px}.upload-area{border:2px dashed var(--border);padding:46px 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ease}.btn:hover{background:var(--btn-bg-hover)}.btn:active{transform:translateY(1px)}.btn.danger{background:linear-gradient(90deg,#b91c1c,#dc2626);border:none}.files-list{display:flex;flex-direction:column;gap:10px;margin-top:6px;max-height:300px;overflow-y:auto;padding-right:4px}.file-item{display:flex;align-items:center;gap:14px;padding:10px 12px;background:var(--panel);border:1px solid var(--border);border-radius:10px;position:relative}.file-thumb{width:50px;height:50px;border-radius:6px;object-fit:cover;background:#1e293b;border:1px solid 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h2{color:var(--text)}.toolbar{display:flex;flex-direction:column;gap:8px;margin-bottom:14px;flex-shrink:0}.option-group{display:flex;flex-direction:column;gap:10px;margin-top:18px;flex-shrink:0}.right-panel{flex-shrink:0;overflow:hidden}.input{padding:9px 11px;border-radius:8px;border:1px solid var(--border);background:var(--panel-2);color:var(--text);font-size:14px;transition:border-color .2s ease,background .2s ease}.input:focus{outline:none;border-color:var(--accent);background:var(--panel-2);box-shadow:0 0 0 3px var(--focus)}.divider{height:1px;background:var(--border);margin:24px 0 18px;border:none;flex-shrink:0}.footer-note{font-size:11px;text-align:center;color:var(--muted);margin-top:auto;letter-spacing:.4px;padding-top:16px}::-webkit-scrollbar{width:10px}::-webkit-scrollbar-track{background:var(--panel)}::-webkit-scrollbar-thumb{background:var(--border);border-radius:20px;border:2px solid var(--panel)}::-webkit-scrollbar-thumb:hover{background:var(--accent)}@media (max-width: 1050px){.extracted-panel{grid-template-columns:1fr;height:auto}.right-panel{order:-1;flex-direction:column;overflow:visible}body,html{overflow:auto!important}}.week-counter{position:fixed;top:20px;right:20px;background:linear-gradient(135deg,#00d9ff,#00a8cc);color:#000;padding:12px 20px;border-radius:12px;box-shadow:0 4px 12px #00d9ff4d,0 2px 4px #0006;cursor:pointer;-webkit-user-select:none;user-select:none;display:flex;align-items:center;gap:8px;font-weight:700;transition:all .3s ease;z-index:1000;border:2px solid rgba(255,255,255,.2)}.week-counter:hover{transform:translateY(-2px) scale(1.05);box-shadow:0 6px 16px #00d9ff80,0 3px 6px #00000080;background:linear-gradient(135deg,#00e8ff,#00b8dc)}.week-counter:active{transform:translateY(0) 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label{display:block;margin-bottom:8px;color:var(--muted);font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.5px}.current-week-display{background:linear-gradient(135deg,#00d9ff,#00a8cc);color:#000;padding:16px;border-radius:10px;text-align:center;font-size:24px;font-weight:900;letter-spacing:1px;box-shadow:0 2px 8px #00d9ff4d}.modal-section input{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:8px;background:var(--panel-2);color:var(--text);font-size:15px;margin-bottom:12px;transition:all .2s ease}.modal-section input:focus{outline:none;border-color:#00d9ff;box-shadow:0 0 0 3px #00d9ff33}.modal-section input::placeholder{color:var(--muted)}.week-modal .btn{width:100%;padding:12px 20px;border:none;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;transition:all .2s ease;letter-spacing:.5px;margin-top:4px}.week-modal .btn.primary{background:linear-gradient(135deg,#00d9ff,#00a8cc);color:#000;box-shadow:0 2px 8px 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20px;max-width:1200px;margin:0 auto;width:100%}.landing-header{text-align:center;margin-bottom:50px}.landing-header h2{font-size:2.5rem;font-weight:700;margin:0 0 16px;color:#fafafa}.landing-header p{font-size:1.1rem;color:#b3b3b3;margin:0}.cards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;width:100%;max-width:800px}.card{background:#141414;border:1px solid #222;border-radius:14px;padding:30px 24px;cursor:pointer;transition:all .3s ease;text-align:center;min-height:180px;display:flex;flex-direction:column;justify-content:center}.card:hover{transform:translateY(-4px);background:#1a1a1a;border-color:#2a2a2a}.card h3{font-size:1.4rem;font-weight:600;margin:0 0 12px;color:#fafafa}.card p{font-size:.95rem;color:#b3b3b3;margin:0;line-height:1.5}@media (max-width: 640px){.cards-grid{grid-template-columns:1fr;max-width:400px}.landing-header h2{font-size:2rem}.card{min-height:160px;padding:24px 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#0003}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;padding-bottom:8px;border-bottom:1px solid var(--border)}.title-edit-container{display:flex;align-items:center;gap:8px;width:100%}.title-input{flex:1;background:var(--panel-2);border:1px solid var(--accent);border-radius:4px;padding:8px 12px;color:var(--text);font-size:1.2rem;font-weight:600;outline:none}.title-input::placeholder{color:var(--muted);font-style:italic}.edit-actions{display:flex;gap:4px}.card-title{color:var(--text);font-size:1.2rem;font-weight:600;margin:0 12px 0 0;cursor:pointer;padding:6px 8px;border-radius:4px;transition:background .2s ease;flex-grow:1}.card-title:hover{background:var(--btn-bg)}.card-actions{display:flex;gap:6px;align-items:center}.btn.small{padding:4px 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ease;margin-bottom:4px}.sub-todo:hover{border-color:var(--accent);background:var(--btn-bg-hover)}.sub-todo.pinned{border-color:#fbbf24;background:#fbbf241a}.sub-todo.pinned:hover{border-color:#f59e0b;background:#f59e0b26}.sub-todo.completed{opacity:.7}.sub-todo.completed .sub-todo-text{text-decoration:line-through;color:var(--muted)}.sub-todo-content{display:flex;align-items:center;gap:8px;flex-grow:1}.pin-indicator{font-size:.7rem;margin-left:4px}.sub-todo-checkbox{width:16px;height:16px;accent-color:var(--success);cursor:pointer}.sub-todo-text{color:var(--text);font-size:.9rem;cursor:pointer;padding:2px 6px;border-radius:3px;transition:background .2s ease;flex-grow:1}.sub-todo-text:hover{background:var(--panel)}.sub-todo-actions{display:flex;gap:4px;align-items:center}.pin-btn{font-size:.7rem;padding:2px 6px!important;min-width:20px!important;height:20px!important;opacity:.6;transition:opacity .2s ease}.pin-btn:hover{opacity:1}.pin-btn.pinned{opacity:1;background:#fbbf2433!important;border-color:#fbbf24!important;color:#fbbf24!important}.expand-toggle{text-align:center;margin-top:8px;padding-top:8px;border-top:1px solid var(--border)}.expand-btn{font-size:.8rem;padding:4px 12px!important;color:var(--accent)!important;background:transparent!important}.btn{padding:10px 16px;border-radius:6px;border:1px solid var(--border);background:var(--btn-bg);color:var(--text);cursor:pointer;font-size:14px;font-weight:500;transition:border-color .2s ease,background .2s ease;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;min-height:40px}.btn:hover{border-color:var(--accent);background:var(--btn-bg-hover)}@media (max-width: 768px){.todo-container{padding:16px}.todo-header h1{font-size:2rem}.header-left{gap:12px}.todo-card{padding:14px;margin-bottom:12px}.card-header{flex-direction:column;align-items:stretch;gap:8px}.card-title{margin-right:0;text-align:center;font-size:1.1rem}.card-actions{justify-content:center}.title-edit-container{flex-direction:column;gap:8px}.sub-todo{padding:6px 10px}.sub-todo-text{font-size:.85rem}}.timetable-container{min-height:100vh;background:var(--bg);padding:20px;color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Inter,Helvetica,Arial,sans-serif}.timetable-content{max-width:1200px;margin:0 auto}.timetable-header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px;max-width:1200px;margin-left:auto;margin-right:auto;margin-bottom:30px}.header-left{display:flex;align-items:center;gap:20px}.header-left h1{margin:0;font-size:2.5rem;font-weight:700;color:var(--text)}.header-actions{display:flex;gap:15px;flex-wrap:wrap}.btn{padding:12px 24px;border:1px solid var(--border);border-radius:8px;font-size:16px;font-weight:500;cursor:pointer;transition:all .15s ease;text-decoration:none;display:inline-flex;align-items:center;gap:8px;background:var(--btn-bg);color:var(--text)}.btn:hover{background:var(--btn-bg-hover);transform:translateY(-1px)}.btn.primary{background:var(--success);color:#fff;border-color:var(--success)}.btn.primary:hover{background:#15803d;border-color:#15803d}.btn.outline{background:transparent;color:var(--text);border:1px solid var(--border)}.btn.outline:hover{background:var(--btn-bg-hover);border-color:var(--accent)}.btn.danger{background:var(--danger);color:#fff;border-color:var(--danger)}.btn.danger:hover{background:#b91c1c;border-color:#b91c1c}.btn.danger:disabled{background:var(--muted);border-color:var(--muted);cursor:not-allowed;transform:none;opacity:.5}.btn.small{padding:6px 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8px}.empty-state{text-align:center;color:var(--muted);font-style:italic;padding:40px!important}.class-type{padding:4px 12px;border-radius:20px;font-size:12px;font-weight:500;text-transform:uppercase}.class-type.theory{background:#2196f333;border:1px solid #2196F3;color:#64b5f6}.class-type.lab{background:#ff980033;border:1px solid #FF9800;color:#ffb74d}.day-badge{background:#9c27b033;border:1px solid #9C27B0;color:#ce93d8;padding:4px 12px;border-radius:20px;font-size:12px;font-weight:500}.action-buttons{display:flex;gap:8px}.action-buttons .btn{padding:6px 8px;min-width:auto}.csv-format-info{background:var(--panel);padding:20px;border-radius:12px;border:1px solid var(--border)}.csv-format-info h3{margin:0 0 15px;font-size:1.2rem;color:var(--text)}.csv-format-info p{margin:10px 0;line-height:1.6;color:var(--text)}.csv-format-info code{background:var(--panel-2);padding:8px 12px;border-radius:4px;font-family:Courier New,monospace;display:block;margin:10px 0;color:var(--accent);border:1px solid var(--border)}@media (max-width: 768px){.timetable-header{flex-direction:column;align-items:stretch}.header-left,.header-actions{justify-content:center}.form-row{grid-template-columns:1fr}.timetable-table{font-size:12px}.timetable-table th,.timetable-table td{padding:8px}.action-buttons{flex-direction:column}}.notes-container{min-height:100vh;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Inter,Helvetica,Arial,sans-serif}.notes-header{display:flex;justify-content:space-between;align-items:center;padding:20px;border-bottom:1px solid var(--border);background:var(--panel)}.header-left{display:flex;align-items:center;gap:16px}.header-left h1{margin:0;font-size:24px;font-weight:600}.back-btn{background:var(--panel-2);width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;border-radius:9px;border:1px solid var(--border);cursor:pointer;color:var(--accent);font-size:18px;transition:background .15s ease,color .2s ease;flex-shrink:0}.back-btn:hover{background:var(--panel-2);color:var(--text)}.upload-container{padding:24px;max-width:1200px;margin:0 auto;min-height:calc(100vh - 80px)}.upload-area{border:2px dashed var(--border);border-radius:12px;padding:48px 24px;text-align:center;background:var(--panel);cursor:pointer;transition:all .3s ease;margin:24px 0}.upload-area:hover,.upload-area.drag-active{border-color:var(--accent);background:var(--panel-2)}.upload-hint{margin-top:8px;font-size:14px;color:var(--accent);line-height:1.4}.file-input{display:none}.files-section{margin:24px 0;padding:16px;background:var(--panel);border-radius:12px;border:1px solid var(--border)}.files-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.files-header h3{margin:0;font-size:16px}.files-list{display:flex;flex-direction:column;gap:8px}.file-item{display:flex;justify-content:space-between;align-items:center;padding:12px;background:var(--panel-2);border-radius:8px;border:1px solid var(--border)}.file-info{flex:1;display:flex;flex-direction:column;gap:4px}.file-name{font-weight:500;color:var(--text)}.file-size{font-size:12px;color:var(--accent)}.action-buttons{display:flex;flex-direction:column;gap:12px;margin-top:24px}.btn{padding:12px 20px;border-radius:10px;font-size:14px;font-weight:500;cursor:pointer;transition:all .2s ease;border:1px solid var(--border);background:var(--panel-2);color:var(--text);text-align:center;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn:hover{background:var(--panel)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.primary{background:var(--btn-bg-hover);border:1px solid var(--accent);color:var(--text)}.btn.primary:hover{background:#333;border-color:var(--text)}.btn.outline{background:transparent;border:1px solid var(--accent);color:var(--accent)}.btn.outline:hover{background:var(--panel)}.btn.subtle{background:var(--panel-2);border-color:var(--border);color:var(--accent)}.btn.danger{background:linear-gradient(90deg,#b91c1c,#dc2626);border:none;color:#fff}.btn.danger:hover{filter:brightness(1.07)}.btn.block{width:100%}.btn.small{padding:6px 12px;font-size:12px}.extracted-panel{display:grid;grid-template-columns:1fr 320px;gap:16px;padding:16px;max-width:1200px;margin:0 auto;min-height:100vh}.left-panel,.right-panel{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:14px 16px 16px;position:relative;display:flex;flex-direction:column;overflow:hidden}.panel-header{display:flex;align-items:center;gap:12px;margin:0 0 10px;flex-shrink:0}.panel-header h2{margin:0;font-size:16px;letter-spacing:.4px}.text-editor{width:100%;flex:1;resize:none;padding:14px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-size:14px;line-height:1.58;border:1px solid var(--border);border-radius:10px;background:var(--panel-2);color:var(--text);outline:none;transition:border-color .2s ease,background .25s ease;box-shadow:inset 0 0 0 1px #fafafa0d;overflow:auto;white-space:pre-wrap}.text-editor:focus{border-color:var(--accent);background:var(--bg)}.option-group{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}.option-group label{font-size:13px;font-weight:500;color:var(--accent)}.input{padding:10px 12px;border:1px solid var(--border);border-radius:8px;background:var(--panel-2);color:var(--text);font-size:14px;outline:none;transition:border-color .2s ease}.input:focus{border-color:var(--accent)}.divider{border:none;height:1px;background:var(--border);margin:16px 0}.footer-note{margin-top:auto;padding-top:16px;font-size:12px;color:var(--accent);text-align:center;border-top:1px solid var(--border)}.library-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;padding:20px;max-width:1200px;margin:0 auto;min-height:calc(100vh - 120px)}.note-card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:20px;transition:all .2s ease}.note-card:hover{border-color:var(--accent);transform:translateY(-2px)}.note-card h3{margin:0 0 12px;font-size:18px;color:var(--text)}.note-meta{font-size:12px;color:var(--accent);margin:4px 0}.note-actions{margin-top:16px;display:flex;gap:8px}.empty-state{grid-column:1 / -1;text-align:center;padding:60px 20px;color:var(--accent)}.error-message{background:#fee;color:#c33;padding:12px 16px;border-radius:8px;border:1px solid #fcc;margin-top:16px;font-size:14px}.loading-message{background:var(--panel);border:1px solid var(--border);padding:20px;border-radius:12px;margin-top:16px;text-align:center}.loading-message p{margin:8px 0;color:var(--accent)}@media (max-width: 768px){.extracted-panel{grid-template-columns:1fr;grid-template-rows:1fr auto}.library-grid{grid-template-columns:1fr}.files-header,.file-item{flex-direction:column;align-items:stretch;gap:12px}}