:root{--primary-color: #3498db;--primary-hover: #2980b9;--secondary-color: #2c3e50;--accent-color: #00d4ff;--success-color: #6bcf7f;--warning-color: #ffd93d;--danger-color: #ff6b6b;--neutral-color: #95a5a6;--bg-dark: #1a1a1a;--bg-panel: #222222;--bg-header: #2c3e50;--bg-overlay: rgba(30, 30, 30, .9);--text-light: #ecf0f1;--text-muted: #bdc3c7;--border-color: #444;--shadow: 0 4px 6px rgba(0, 0, 0, .3);--sidebar-width: 320px;--footer-height: 40px;--header-height: 60px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-dark);color:var(--text-light);overflow:hidden;height:100vh;display:flex;flex-direction:column}.header{height:var(--header-height);background:var(--bg-header);padding:0 20px;display:flex;justify-content:space-between;align-items:center;box-shadow:var(--shadow);z-index:100;border-bottom:1px solid var(--border-color)}.header-left{display:flex;align-items:center}.header-left h1{font-size:20px;font-weight:600;color:var(--text-light);margin-right:15px}.header-left .subtitle{font-size:13px;color:var(--text-muted);border-left:1px solid var(--border-color);padding-left:15px}.header-right{display:flex;align-items:center}.btn{padding:8px 16px;border:none;border-radius:4px;cursor:pointer;font-size:13px;font-weight:600;transition:all .2s ease;display:inline-flex;align-items:center;gap:8px}.btn-primary{background:var(--primary-color);color:#fff}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px)}.btn-icon{background:transparent;border:1px solid var(--border-color);color:var(--text-light);width:32px;height:32px;border-radius:4px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s}.btn-icon:hover{background:#ffffff1a;border-color:var(--text-muted)}.btn-playback{background:var(--success-color);color:#1a1a1a;padding:8px 20px;border-radius:4px;border:none;font-weight:700;cursor:pointer;display:flex;align-items:center;gap:8px;transition:all .2s}.btn-playback:hover:not(:disabled){transform:scale(1.05);box-shadow:0 0 10px #6bcf7f66}.btn-playback:disabled{background:var(--neutral-color);cursor:not-allowed;opacity:.5}.btn-playback.playing{background:var(--warning-color)}.main-container{display:flex;flex:1;height:calc(100vh - var(--header-height) - var(--footer-height));position:relative}.viewer-container{flex:1;background:#000;position:relative;overflow:hidden}#viewer-container canvas{outline:none}.timeline-panel{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(to top,#000000e6,#0009);padding:15px 30px;z-index:50;display:flex;flex-direction:column;gap:10px;border-top:1px solid rgba(255,255,255,.1)}.date-display{text-align:center}.current-date{font-size:16px;font-weight:600;color:var(--primary-color)}.date-range{font-size:11px;color:var(--text-muted);margin-top:2px}.timeline-slider-container{display:flex;align-items:center;gap:15px}.timeline-slider{flex:1;height:6px;-webkit-appearance:none;background:#fff3;border-radius:3px;outline:none;cursor:pointer}.timeline-slider::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;border-radius:50%;background:var(--primary-color);cursor:pointer;transition:transform .1s;box-shadow:0 0 10px #3498db80}.timeline-slider::-webkit-slider-thumb:hover{transform:scale(1.2)}.playback-controls{display:flex;justify-content:center;align-items:center;gap:20px}.speed-control{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-muted)}.speed-select{background:#0000004d;color:var(--text-light);border:1px solid var(--border-color);padding:4px 8px;border-radius:4px;font-size:12px;cursor:pointer}.speed-select:focus{outline:none;border-color:var(--primary-color)}.sidebar{width:var(--sidebar-width);background:var(--bg-panel);border-left:1px solid var(--border-color);overflow-y:auto;padding:15px;display:flex;flex-direction:column;gap:15px;z-index:60}.panel{background:#ffffff08;border:1px solid var(--border-color);border-radius:6px;padding:15px}.panel h3{font-size:14px;font-weight:600;color:var(--accent-color);margin-bottom:12px;display:flex;align-items:center;gap:8px}.progress-section{margin-bottom:15px}.progress-bar-container{width:100%;height:20px;background:#0000004d;border-radius:10px;overflow:hidden;border:1px solid var(--border-color)}.progress-bar{height:100%;background:linear-gradient(90deg,var(--primary-color),var(--accent-color));display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:700;color:#000;transition:width .3s ease}.stats-grid{display:grid;grid-template-columns:1fr;gap:8px}.stat-item{background:#0003;padding:10px;border-radius:4px;display:flex;align-items:center;gap:12px;border-left:3px solid transparent}.stat-item.completed{border-left-color:var(--success-color)}.stat-item.in-progress{border-left-color:var(--warning-color)}.stat-item.not-started{border-left-color:var(--danger-color)}.stat-item.total{border-left-color:var(--neutral-color)}.stat-icon{font-size:18px}.stat-content{flex:1;display:flex;justify-content:space-between;align-items:center}.stat-label{font-size:12px;color:var(--text-muted)}.stat-value{font-weight:700;font-size:14px}.stat-percent{font-size:11px;color:var(--text-muted);margin-left:5px}.tasks-list{list-style:none;max-height:200px;overflow-y:auto;padding-right:5px}.tasks-list::-webkit-scrollbar{width:4px}.tasks-list::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:2px}.active-task{background:#ffd93d1a;border-left:3px solid var(--warning-color);padding:8px;margin-bottom:8px;border-radius:0 4px 4px 0}.task-name{font-size:12px;font-weight:600;margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.task-details{font-size:10px;color:var(--text-muted)}.no-tasks{font-size:12px;color:var(--text-muted);text-align:center;padding:10px;font-style:italic}.legend{display:flex;flex-direction:column;gap:8px}.legend-item{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-muted)}.legend-color{width:16px;height:16px;border-radius:3px;border:1px solid rgba(255,255,255,.1)}.shortcuts{display:flex;flex-direction:column;gap:8px}.shortcut-item{display:flex;justify-content:space-between;align-items:center;font-size:11px;color:var(--text-muted)}kbd{background:#ffffff1a;padding:2px 6px;border-radius:3px;font-family:monospace;border:1px solid var(--border-color)}.footer{height:var(--footer-height);background:var(--bg-header);border-top:1px solid var(--border-color);display:flex;justify-content:center;align-items:center;font-size:11px;color:var(--text-muted);gap:15px;z-index:100}.footer a{color:var(--primary-color);text-decoration:none}.footer a:hover{text-decoration:underline}.loading-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000e6;z-index:9999;display:none;align-items:center;justify-content:center;flex-direction:column}.loading-content{text-align:center;width:300px}.spinner{width:40px;height:40px;border:3px solid rgba(255,255,255,.1);border-top-color:var(--primary-color);border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 20px}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{margin-bottom:10px;font-size:14px;color:var(--text-light)}.loading-progress-container{width:100%;height:4px;background:#ffffff1a;border-radius:2px;overflow:hidden}.loading-progress{height:100%;background:var(--primary-color);width:0%;transition:width .2s}@media(max-width:768px){.main-container{flex-direction:column}.sidebar{width:100%;height:300px;order:2}.viewer-container{order:1}}