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solid var(--accent);margin-bottom:-1px}.dock-tab.dragging{opacity:.5}@keyframes holdGlow{0%{box-shadow:0 0 #00d4ff00;background:transparent}to{box-shadow:0 0 12px 4px #00d4ff99,inset 0 0 8px #00d4ff33;background:#00d4ff26}}@keyframes holdGlowFade{0%{box-shadow:0 0 12px 4px #00d4ff99,inset 0 0 8px #00d4ff33;background:#00d4ff26}to{box-shadow:0 0 #00d4ff00;background:transparent}}.dock-tab.hold-glow{animation:holdGlow .5s ease-out forwards;cursor:grabbing}.dock-tab.hold-ready{box-shadow:0 0 16px 6px #00d4ffcc,inset 0 0 10px #00d4ff4d;background:#00d4ff33;cursor:grabbing}.dock-tab.hold-fade{animation:holdGlowFade .5s ease-out forwards}.dock-tab-title{font-weight:500}.dock-tab-close{display:flex;align-items:center;justify-content:center;width:16px;height:16px;margin-left:8px;border:none;background:transparent;color:var(--text-secondary);cursor:pointer;border-radius:3px;font-size:14px;line-height:1;padding:0;opacity:.6;transition:opacity .15s,background .15s}.dock-tab-close:hover{opacity:1;background:#ffffff1a;color:var(--text-primary)}.dock-tab.active .dock-tab-close{opacity:.8}.dock-tab[draggable=true]{cursor:grab}.dock-tab[draggable=true]:active{cursor:grabbing}.dock-tab.drop-target-tab{border-left:2px solid var(--accent);margin-left:-2px}.dock-tab.drop-target-tab:before{content:"";position:absolute;left:-1px;top:4px;bottom:4px;width:2px;background:var(--accent);border-radius:1px}.dock-panel-content{flex:1;display:flex;flex-direction:column;min-width:0;min-height:0;overflow:hidden;position:relative}.dock-panel-content-inner{flex:1;display:flex;flex-direction:column;min-width:0;min-height:0;overflow:auto;transform-origin:top left;font-size:calc(1em * var(--panel-zoom, 1))}.dock-panel-content-inner>*{flex:1;min-height:0}.dock-panel-content-inner canvas,.dock-panel-content-inner video{font-size:1rem}.dock-zoom-indicator{position:absolute;bottom:8px;right:8px;background:#000000b3;color:var(--accent);padding:4px 8px;border-radius:4px;font-size:11px;font-weight:500;pointer-events:none;z-index:50}.dock-drop-overlay{position:absolute;background:#00d4ff26;border:2px dashed var(--accent);pointer-events:none;z-index:100}.dock-drop-overlay.left{top:0;left:0;width:50%;height:100%}.dock-drop-overlay.right{top:0;right:0;width:50%;height:100%}.dock-drop-overlay.top{top:0;left:0;width:100%;height:50%}.dock-drop-overlay.bottom{bottom:0;left:0;width:100%;height:50%}.dock-drop-overlay.center{inset:10%;width:auto;height:auto}.dock-tab-slots-overlay{position:absolute;top:0;left:0;right:0;height:32px;display:flex;align-items:center;padding:0 4px;pointer-events:none;z-index:100;background:#0000004d;gap:4px}.dock-tab-slot{width:40px;height:24px;border:2px dashed var(--border-color);border-radius:4px;background:transparent;transition:all .15s ease;flex-shrink:0}.dock-tab-slot.active{border-color:var(--accent);background:#00d4ff40;box-shadow:0 0 8px 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#00d4ff;--accent-timeline-hover: #00b8e6;--danger: #ff4444;--success: #44ff44;--warning: #ffaa00}*{box-sizing:border-box}body{margin:0;padding:0;background:var(--bg-primary);color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:14px;overflow:hidden;user-select:none;-webkit-user-select:none}input,textarea{user-select:text;-webkit-user-select:text}.app{display:flex;flex-direction:column;height:100vh;width:100vw;overflow:hidden}.toolbar{display:flex;align-items:center;gap:0;padding:0 12px;background:var(--bg-tertiary);border-bottom:1px solid var(--border-color);min-height:32px;flex-shrink:0}.toolbar-section{display:flex;align-items:center;gap:8px;padding:0 12px}.toolbar-spacer{flex:1}.toolbar-center{display:flex;align-items:center;gap:12px;justify-content:center}.toolbar-right{margin-left:0}.toolbar-right 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var(--border-color);border-top-color:var(--accent);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.panel-header{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:var(--bg-tertiary);border-bottom:1px solid var(--border-color)}.panel-header h3,.panel-header h4{margin:0;font-size:14px;font-weight:600}.panel-empty{padding:24px 16px;text-align:center;color:var(--text-secondary)}.layer-panel{display:flex;flex-direction:column;height:100%;min-height:0;overflow:hidden}.slots-panel .panel-header{display:flex;justify-content:space-between;align-items:center}.slot-count{font-size:12px;color:var(--text-secondary)}.grid-controls{display:flex;gap:4px}.grid-btn{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:4px;color:var(--text-primary);font-size:14px;width:28px;height:28px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all 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var(--border-color);border-radius:6px;overflow:hidden;cursor:pointer;transition:all .2s;display:flex;flex-direction:column}.slot-item.empty{opacity:.4}.slot-item.has-layer{border-style:solid;opacity:.6}.slot-item.has-media{opacity:1;border-color:var(--border-color)}.slot-item:hover{border-color:#555;opacity:1}.slot-item.selected{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.slot-item.dragging{opacity:.5;transform:scale(.95)}.slot-item.drag-over{border-color:var(--accent);border-style:solid;background:#00d4ff1a}.slot-item.column-highlight,.slot-item.row-highlight{border-color:var(--accent);box-shadow:0 0 12px var(--accent),inset 0 0 20px #00d4ff33;opacity:1}.slot-item[draggable=true]{cursor:grab}.slot-item[draggable=true]:active{cursor:grabbing}.slot-header{display:flex;align-items:center;justify-content:space-between;padding:6px 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