.canvas-container {
            text-align: center;
            margin: 1.5rem 0;
            background: #fefefe;
            border-radius: 16px;
            padding: 10px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
        }.author-bio{display:block}
        .geometry-canvas {
            width: 100%;
            background: #ffffff;
            border-radius: 12px;
            border: 1px solid #dee2e6;
        }
        .legend {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            margin-top: 10px;
            font-size: 0.85rem;
        }
        .legend-color {
            width: 18px;
            height: 18px;
            display: inline-block;
            border-radius: 4px;
            margin-right: 5px;
            vertical-align: middle;
        }
        .legend-color.curve { background-color: #2c3e66; }
        .legend-color.shade { background-color: #0d6efd; opacity: 0.3; }
        .legend-color.point { background-color: #e67e22; border-radius: 50%; }
        .input-group-custom {
            margin-bottom: 1rem;
        }
        .badge-soft {
            background-color: #e9ecef;
            color: #2c3e66;
            font-weight: 500;
            padding: 6px 12px;
            border-radius: 24px;
        }
        hr {
            margin: 2rem 0;
        }