.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%;
            border: 1px solid #ccc;
        }
        .legend-color.red {
            background-color: #dc3545;
        }
        .legend-color.blue {
            background-color: #0d6efd;
        }
        .legend-color.gray {
            background-color: #6c757d;
        }
        .legend-color.green {
            background-color: #28a745;
        }
        .vertex-row {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 0.4rem;
            flex-wrap: wrap;
        }
        .vertex-row .vlabel {
            font-weight: 600;
            min-width: 32px;
            font-size: 0.95rem;
        }
        .vertex-row input[type="number"] {
            width: 80px;
            padding: 0.25rem 0.4rem;
            border: 1px solid #ced4da;
            border-radius: 4px;
            font-size: 0.9rem;
        }
        .vertex-row .btn-remove {
            background: none;
            border: none;
            color: #dc3545;
            cursor: pointer;
            font-size: 1.1rem;
            padding: 0 0.3rem;
        }
        .vertex-row .btn-remove:hover {
            color: #b02a37;
        }
        .vertex-list-container {
            max-height: 260px;
            overflow-y: auto;
            padding: 0.5rem 0;
            border: 1px solid #e9ecef;
            border-radius: 4px;
            padding: 0.75rem;
            background: #fafafa;
        }
        .angle-detail-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
            gap: 0.5rem;
            margin: 0.75rem 0;
        }
        .angle-item {
            background: #f8f9fa;
            padding: 0.3rem 0.6rem;
            border-radius: 4px;
            font-size: 0.9rem;
            border: 1px solid #e9ecef;
        }
        .angle-item .label {
            font-weight: 500;
        }
        .angle-item .value {
            font-family: 'Courier New', monospace;
            color: var(--primary-color);
        }
        .summary-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
            gap: 0.75rem;
            margin: 1rem 0;
        }
        .summary-card .label {
            font-size: 0.8rem;
            text-transform: uppercase;
            color: #6c757d;
            letter-spacing: 0.5px;
        }
        .summary-card .value {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--primary-color);
        }
        .summary-card .value.green {
            color: #28a745;
        }
        .summary-card .value.red {
            color: #dc3545;
        }
        .badge-convex {
            background: #28a745;
            color: #fff;
            padding: 0.25rem 0.75rem;
            border-radius: 20px;
            font-size: 0.85rem;
        }
        .badge-concave {
            background: #dc3545;
            color: #fff;
            padding: 0.25rem 0.75rem;
            border-radius: 20px;
            font-size: 0.85rem;
        }
        .badge-regular {
            background: #0d6efd;
            color: #fff;
            padding: 0.25rem 0.75rem;
            border-radius: 20px;
            font-size: 0.85rem;
        }
        .toast {
            background: #fff;
            border-radius: 8px;
            padding: 1rem 1.5rem;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
            border-left: 4px solid #28a745;
            margin-bottom: 0.5rem;
            animation: slideIn 0.3s ease;
        }
        @keyframes slideIn {
            from { opacity: 0; transform: translateX(30px); }
            to { opacity: 1; transform: translateX(0); }
        }
        .toast.error {
            border-left-color: #dc3545;
        }
        @media (max-width: 576px) {
            .vertex-row input[type="number"] {
                width: 60px;
            }
            .vertex-row .vlabel {
                min-width: 24px;
                font-size: 0.8rem;
            }
            .summary-grid {
                grid-template-columns: 1fr 1fr;
            }
            .angle-detail-grid {
                grid-template-columns: 1fr 1fr;
            }
        }