.canvas-container {
            background: #ffffff;
            border-radius: 20px;
            padding: 1rem;
            box-shadow: 0 2px 8px rgba(0,0,0,0.03);
            border: 1px solid #eef2f6;
            margin-top: 1.2rem;
        }.form-label { font-size:0.95rem;}

        canvas {
            width: 100%;
            height: auto;
            background: #ffffff;
            border-radius: 12px;
        }
        .legend {
            display: flex;
            gap: 1.5rem;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 0.75rem;
        }
        .legend-color {
            width: 18px;
            height: 18px;
            display: inline-block;
            border-radius: 4px;
        }