.input-group-custom {
            margin-bottom: 1rem;
        }
        .geometry-canvas {
            width: 100%;
            height: auto;
            background-color: #f9f9f9;
            border: 1px solid #ddd;
            border-radius: 8px;
            margin-top: 1.5rem;
            display: block;
        }
        .canvas-container {
            text-align: center;
            margin-top: 1rem;
        }
        .legend {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin: 0.5rem 0;
            font-size: 0.9rem;
        }
        .legend-item {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .legend-color {
            width: 16px;
            height: 16px;
            border-radius: 50%;
        }
        .legend-color.blue { background-color: #0d6efd; }
        .legend-color.green { background-color: #28a745; }
        .temp-toast {
            position: fixed;
            bottom: 20px;
            right: 20px;
            background: #343a40;
            color: white;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 0.85rem;
            z-index: 9999;
            opacity: 0;
            transition: opacity 0.2s;
            pointer-events: none;
        }