#render-container{width:100%;height:100%;position:relative}canvas{display:block;width:100%;height:100%}body{font-family:Inter,sans-serif;min-height:100vh;display:flex;background-color:#f3f4f6;outline:none}#visualization-area{outline:none}.color-split-group{display:inline-flex;align-items:stretch;border:1px solid #d1d5db;border-radius:10px;overflow:hidden;background:#f9fafb}.color-main-btn{display:inline-flex;align-items:center;gap:8px;padding:8px 10px;background:transparent;border:none;cursor:pointer;min-width:140px}.color-main-btn:hover,.color-main-btn:focus-visible{background:#eef2ff;outline:none}.color-main-btn .swatch{width:22px;height:22px;border-radius:6px;border:1px solid #9ca3af}.color-palette-btn{width:32px;min-width:32px;border-left:1px solid #d1d5db;background:#e5e7eb;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;padding:0 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8px;border-radius:4px;font-size:12px;font-family:monospace;pointer-events:none;white-space:nowrap;transition:opacity .2s;display:inline-flex;align-items:center;justify-content:center;line-height:1;box-sizing:border-box;vertical-align:middle}.layer-label.size-small{font-size:12px}.layer-label.size-medium{font-size:18px}.layer-label.size-large{font-size:24px}.switch{position:relative;display:inline-block;width:40px;height:22px}.switch input{display:none}.slider{position:absolute;cursor:pointer;top:0;left:0;right:0;bottom:0;background-color:#ccc;transition:.4s;border-radius:22px}.slider:before{position:absolute;content:"";height:14px;width:14px;left:4px;bottom:4px;background-color:#fff;transition:.4s;border-radius:50%}input:checked+.slider{background-color:#3b82f6}input:checked+.slider:before{transform:translate(18px)}#render-context-menu{position:absolute;z-index:30;background-color:#fff;border:1px solid #e5e7eb;border-radius:8px;box-shadow:0 10px 25px #0000001f;min-width:160px;padding:4px 0}.context-menu-item{display:block;width:100%;text-align:left;padding:8px 12px;font-size:14px;color:#111827}.context-menu-item:hover{background-color:#f3f4f6}.context-menu-item.disabled{color:#9ca3af;pointer-events:none}.context-menu-separator{margin:4px 0;border-top:1px solid #e5e7eb}#selection-overlay{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:20}#selection-box{position:absolute;border:2px dashed #3b82f6;background:#3b82f626;box-shadow:0 4px 12px #0000001f inset}#layer-minimap{position:absolute;top:12px;left:12px;z-index:25;background:#fffffff2;border:2px solid #9ca3af;border-radius:12px;padding:10px;box-shadow:0 8px 18px #0000001f;pointer-events:auto;width:140px}#layer-minimap-stack{display:flex;flex-direction:column;gap:2px;width:100%}.layer-minimap-bar{width:100%;height:14px;border-radius:8px;border:1px solid rgba(17,24,39,.12);box-sizing:border-box;-webkit-user-drag:element;cursor:grab}.layer-minimap-bar.selected{box-shadow:0 0 0 3px #3b82f6}.layer-minimap-bar.drag-over{outline:2px dashed #3b82f6}.layer-minimap-bar:active{cursor:grabbing}.minimap-drop-zone{width:100%;height:2px;box-sizing:border-box}.minimap-drop-zone.active{border-top:3px solid #3b82f6}#layer-minimap-actions{display:grid;grid-template-columns:repeat(2,42px);gap:6px;justify-content:center;justify-items:center;margin:8px auto 14px}#minimap-select-all{display:block;width:100%;margin:10px auto 0;padding:6px 10px;font-size:12px;font-weight:600;color:#1f2937;background:#e5e7eb;border:1px solid #d1d5db;border-radius:8px;box-shadow:0 2px 4px #00000014}#minimap-select-all:hover{background:#dbeafe;border-color:#93c5fd;color:#1d4ed8}.minimap-action-btn{width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;background:#e5e7eb;border:1px solid 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