.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;
            justify-content: center;
            gap: 2rem;
            margin: 0.5rem 0;
            font-size: 0.9rem;
            flex-wrap: wrap;
        }
        .legend-item {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .legend-color {
            width: 16px;
            height: 16px;
            border-radius: 50%;
        }
        .legend-color.red {
            background-color: #dc3545;
        }
        .legend-color.blue {
            background-color: #0d6efd;
        }
        .legend-color.gray {
            background-color: #6c757d;
        }
        .legend-color.green {
            background-color: #198754;
        }
        .data-points-table {
            max-height: 220px;
            overflow-y: auto;
        }
        .data-points-table table {
            margin-bottom: 0;
        }
        .data-points-table td input {
            width: 70px;
            padding: 4px 6px;
            font-size: 0.9rem;
            border: 1px solid #ced4da;
            border-radius: 4px;
            background: white;
        }
        .data-points-table td input:focus {
            border-color: var(--primary-color);
            outline: none;
            box-shadow: 0 0 0 2px rgba(70, 130, 180, 0.25);
        }
        .data-points-table .remove-row-btn {
            color: #dc3545;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 1rem;
            padding: 0 4px;
        }
        .data-points-table .remove-row-btn:hover {
            color: #a71d2a;
        }
        .fit-stat {
            display: inline-block;
            min-width: 120px;
            padding: 4px 12px;
            background: #f8f9fa;
            border-radius: 20px;
            margin: 4px 6px 4px 0;
            font-size: 0.95rem;
        }
        .fit-stat strong {
            font-weight: 600;
            color: var(--accent-color);
        }
        .equation-display {
            font-size: 1.6rem;
            font-family: 'Cambria Math', 'Latin Modern Math', STIXGeneral, serif;
            text-align: center;
            padding: 16px;
            background: #f8f9fa;
            border-radius: 8px;
            border: 1px solid #e9ecef;
            margin: 12px 0;
        }
        .coeff-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
            gap: 8px;
            margin: 12px 0;
        }
        .coeff-item {
            background: white;
            border: 1px solid #e9ecef;
            border-radius: 6px;
            padding: 8px 12px;
            text-align: center;
        }
        .coeff-item .label {
            font-size: 0.8rem;
            color: #6c757d;
        }
        .coeff-item .value {
            font-size: 1.2rem;
            font-weight: 600;
            font-family: 'Courier New', monospace;
        }
        .method-selector {
            min-width: 180px;
        }
        .data-controls {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin: 8px 0;
        }
        .data-controls .btn-sm {
            font-size: 0.85rem;
        }
        .residual-info {
            font-size: 0.9rem;
            color: #495057;
            background: #f1f3f5;
            padding: 8px 16px;
            border-radius: 6px;
            margin: 8px 0;
        }
        .badge-method {
            font-size: 0.75rem;
            padding: 4px 10px;
            border-radius: 12px;
            background: #e9ecef;
            color: #495057;
        }
        #pasteDataArea textarea {
            font-family: 'Courier New', monospace;
            font-size: 0.9rem;
        }
        @media (max-width: 576px) {
            .data-points-table td input {
                width: 50px;
                font-size: 0.8rem;
            }
            .equation-display {
                font-size: 1.2rem;
            }
            .coeff-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }