.example-btn{padding:0.25rem}
.canvas-container {
            text-align: center;
            margin: 20px 0;
            background: #fefefe;
            border-radius: 12px;
        }
        .legend {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            margin-top: 8px;
            font-size: 0.8rem;
        }
        .legend-color {
            width: 18px;
            height: 18px;
            display: inline-block;
            border-radius: 50%;
            margin-right: 6px;
            vertical-align: middle;
        }
        .design-note {
            background: #e0f2fe;
            padding: 1rem;
            border-radius: 12px;
            margin: 1rem 0;
        }
        .input-group-custom {
            margin-bottom: 1rem;
        }
        hr.divider {
            margin: 1.8rem 0;
        }