.app{max-width:1200px;margin:0 auto;padding:24px}.app h1{text-align:center;margin-bottom:24px;font-size:1.4rem}.image-loader{border:2px dashed #ccc;border-radius:8px;padding:40px;text-align:center;cursor:pointer;transition:background .2s,border-color .2s;margin-bottom:24px}.image-loader:hover,.image-loader.drag-over{background:#e8f4fd;border-color:#4a90d9}.image-loader p{color:#888;font-size:1rem}.canvases{display:flex;gap:24px;margin-bottom:24px}.canvas-wrapper{flex:1;min-width:0}.canvas-wrapper h3{text-align:center;margin-bottom:8px;font-size:1rem;color:#555}.canvas-container{border:1px solid #ddd;border-radius:4px;overflow:hidden;background:#fff;display:flex;justify-content:center}.canvas-container canvas{max-width:100%;max-height:500px;display:block}.canvas-placeholder{padding:80px 40px;color:#aaa;font-size:.9rem}.canvas-hint{text-align:center;font-size:.8rem;color:#999;margin-top:4px}.color-controls{background:#fff;border:1px solid #ddd;border-radius:8px;padding:20px 24px}.controls-top{display:flex;gap:24px;align-items:flex-start}.controls-form{flex:1;display:flex;flex-direction:column;gap:14px}.rgb-cube{flex-shrink:0;border:1px solid #eee;border-radius:6px;padding:4px;background:#fafafa}.rgb-cube canvas{display:block}.control-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.control-row label{font-size:.9rem;min-width:120px}.color-picker-row{display:flex;align-items:center;gap:8px}.color-swatch{width:28px;height:28px;border:1px solid #ccc;border-radius:4px}.color-picker-row input[type=color]{width:40px;height:30px;border:1px solid #ccc;border-radius:4px;padding:0;cursor:pointer}.control-row input[type=range]{flex:1;max-width:300px}.control-section{padding:10px 12px;background:#f8f9fa;border-radius:6px;border:1px solid #eee}.control-section h4{font-size:.85rem;margin-bottom:8px;color:#444}.radio-label{display:flex;align-items:center;gap:8px;padding:6px 8px;margin:2px 0;border-radius:4px;cursor:pointer;font-size:.85rem;transition:background .15s}.radio-label:hover{background:#eef}.radio-label.active{background:#e0e7ff}.radio-label .formula{font-family:SF Mono,Menlo,Consolas,monospace;font-size:.9rem}.distance-info p{font-size:.85rem;padding:2px 0;font-family:SF Mono,Menlo,Consolas,monospace}.distance-info p.active{color:#2563eb;font-weight:600}.checkbox-label{display:flex;align-items:center;gap:6px;cursor:pointer;min-width:auto!important;font-size:.9rem!important}.save-button{align-self:flex-start;padding:10px 24px;background:#4a90d9;color:#fff;border:none;border-radius:6px;font-size:.95rem;cursor:pointer;transition:background .2s}.save-button:hover:not(:disabled){background:#357abd}.save-button:disabled{background:#ccc;cursor:not-allowed}@media (max-width: 700px){.controls-top{flex-direction:column;align-items:center}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#f5f5f5;color:#333;min-height:100vh}#root{min-height:100vh}