.property-table th,
        .property-table td {
            padding: 0.75rem;
            text-align: left;
            border: 1px solid var(--border-color);
        }
        .input-group-custom {
            margin-bottom: 1rem;
        }
        .deep-dive {
            margin: 1.8rem 0;
        }
        .deep-dive p {
            text-align: justify;
        }
        .unit-note {
            font-size: 0.9rem;
            color: #6c757d;
        }
        .coord-input {
            margin-bottom: 0.5rem;
        }
        .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;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1.5rem;
            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%;
            border: 1px solid #ccc;
        }
        .legend-color.blue {
            background-color: #0d6efd;
        }
        .legend-color.red {
            background-color: #dc3545;
        }
        .legend-color.green {
            background-color: #198754;
        }
        .shape-selector {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .shape-btn {
            flex: 1 0 auto;
            min-width: 100px;
            padding: 0.6rem 1rem;
            border: 2px solid #dee2e6;
            border-radius: 8px;
            background: white;
            font-weight: 500;
            transition: all 0.2s;
            cursor: pointer;
            text-align: center;
        }
        .shape-btn:hover {
            background: #f0f4f8;
            border-color: var(--primary-color);
        }
        .shape-btn.active {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }
        .shape-btn i {
            margin-right: 0.5rem;
        }
        .input-dim {
            margin-bottom: 0.75rem;
        }
        .input-dim label {
            font-weight: 500;
            font-size: 0.95rem;
        }
        .result-box {
            background: #f8fafc;
            border-radius: 8px;
            padding: 1.5rem;
            margin-top: 1rem;
            border: 1px solid #e9ecef;
        }
        .result-box .label {
            font-size: 0.9rem;
            color: #6c757d;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .result-box .value {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary-color);
            font-family: 'Cambria Math', serif;
        }
        .result-box .sub-value {
            font-size: 1rem;
            color: #495057;
        }
        .unit-selector {
            max-width: 150px;
            display: inline-block;
        }
        .formula-card {
            background: #f8f9fa;
            border-radius: 8px;
            padding: 1rem 1.5rem;
            margin: 0.5rem 0;
            border-left: 3px solid var(--primary-color);
        }
        .formula-card .formula {
            font-family: 'Cambria Math', serif;
            font-size: 1.2rem;
            font-weight: 500;
        }