.geometry-canvas {
            width: 100%;
            height: auto;
            background-color: #f9f9f9;
            border: 1px solid #ddd;
            border-radius: 8px;
            margin-top: 1rem;
            display: block;
        }
        .canvas-container {
            text-align: center;
            margin-top: 1rem;
        }
        .legend {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            margin-top: 0.5rem;
            font-size: 0.85rem;
        }
        .mode-selector {
            margin-bottom: 1.5rem;
        }
        .submode-group {
            margin: 1rem 0;
            padding: 0.75rem;
            background-color: rgba(70, 130, 180, 0.05);
            border-radius: 6px;
        }