:root {
            --primary-color: #2c7da0;
            --secondary-color: #a9d6e5;
            --accent-color: #01497c;
            --vector-color: #e63946;
            --field-color: #457b9d;
            --gradient-color: #9d4edd;
            --streamline-color: #2a9d8f;
            --light-gray: #f8f9fa;
            --border-color: #eaeaea;
            --text-color: #333;
            --text-muted: #6c757d;
        }
         .page-header {
            background: linear-gradient(135deg, rgba(169, 214, 229, 0.4) 0%, rgba(44, 125, 160, 0.4) 100%);
            padding: 1.5rem 0;
            margin-bottom: 2rem;
            border-bottom: 1px solid rgba(44, 125, 160, 0.2);
            position: relative;
            overflow: hidden;   color: var(--text-color);
        }
        .breadcrumb {
            background-color: transparent;
            padding: 0.5rem 0;
            margin-bottom: 0.5rem;
        }
        .breadcrumb-item a {
            color: var(--text-muted);
            text-decoration: none;
        }
        .breadcrumb-item.active {
            color: var(--text-color);
        }
        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(44, 125, 160, 0.15);
        }
        .math-input {
            font-family: 'Cambria Math', 'Latin Modern Math', STIXGeneral, serif;
            font-size: 1.1rem;
        }
        .visualization-container {
            background-color: var(--light-gray);
            border-radius: 6px;
            padding: 1rem;
            margin-top: 1.5rem;
            border: 1px solid var(--border-color);
            height: 600px;
            position: relative;
        }
        #vectorFieldPlot {
            width: 100%;
            height: 100%;
            background-color: white;
        }
        .math-result {
            padding: 12px;
            background-color: white;
            border-radius: 4px;
            border: 1px solid #eee;
            font-size: 1.1rem;
            font-family: 'Cambria Math', 'Latin Modern Math', STIXGeneral, serif;
            margin: 10px 0;
            text-align: center;
        }
        .math-equation {
            font-size: 1.3rem;
            padding: 15px;
            background-color: rgba(111, 66, 193, 0.05);
            border-left: 4px solid var(--math-color);
            border-radius: 4px;
            margin: 15px 0;
        }
        .math-box {
            background-color: rgba(111, 66, 193, 0.05);
            border-left: 3px solid var(--math-color);
            padding: 1rem;
            border-radius: 0 4px 4px 0;
            margin: 1.5rem 0;
        }
        .vector-box {
            background-color: rgba(230, 57, 70, 0.05);
            border-left: 3px solid var(--vector-color);
            padding: 1rem;
            border-radius: 0 4px 4px 0;
            margin: 1.5rem 0;
        }
        .field-controls {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 1.5rem;
            padding: 1rem;
            background-color: rgba(44, 125, 160, 0.05);
            border-radius: 6px;
        }
        .control-group {
            flex: 1;
            min-width: 150px;
        }
        .control-group label {
            display: block;
            margin-bottom: 0.25rem;
            font-weight: 600;
            color: var(--text-color);
        }
        @media (max-width: 768px) {
            .visualization-container {
                height: 400px;
            }
        }
        .field-examples {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .example-btn {
            background-color: rgba(44, 125, 160, 0.1);
            border: 1px solid rgba(44, 125, 160, 0.2);
            border-radius: 4px;
            padding: 0.5rem 0.75rem;
            font-size: 0.9rem;
            color: var(--primary-color);
            cursor: pointer;
            transition: all 0.2s;
            font-family: 'Courier New', monospace;
        }
        .example-btn:hover {
            background-color: rgba(44, 125, 160, 0.2);
            transform: translateY(-2px);
        }
        .math-notation {
            font-family: 'Cambria Math', 'Latin Modern Math', STIXGeneral, serif;
            font-size: 1.1rem;
        }
        .calculation-step {
            margin-bottom: 1.5rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px dashed var(--border-color);
        }
        .field-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
        }
        .field-table th, .field-table td {
            padding: 0.75rem;
            text-align: left;
            border: 1px solid var(--border-color);
        }
        .field-table th {
            background-color: var(--light-gray);
            font-weight: 600;
        }
        .field-table tr:nth-child(even) {
            background-color: rgba(44, 125, 160, 0.05);
        }
        .field-properties {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 1rem;
            margin-top: 1.5rem;
        }
        .property-card {
            background-color: white;
            border-radius: 6px;
            padding: 1rem;
            border: 1px solid var(--border-color);
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }
        .property-value {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--vector-color);
            margin-bottom: 0.25rem;
        }
        .property-label {
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .color-scale {
            height: 20px;
            width: 100%;
            background: linear-gradient(to right, #457b9d, #a8dadc, #f1faee, #e9c46a, #e63946);
            border-radius: 4px;
            margin: 0.5rem 0;
            position: relative;
        }
        .color-label {
            display: flex;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .viz-controls {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
            margin-bottom: 1rem;
        }
        .viz-control {
            display: flex;
            align-items: center;
        }
        .viz-control label {
            margin-right: 0.5rem;
            font-weight: 500;
        }
        .advanced-options {
            background-color: rgba(44, 125, 160, 0.05);
            border-radius: 6px;
            padding: 1rem;
            margin-top: 1rem;
        }
        .advanced-header {
            font-weight: 600;
            color: var(--primary-color);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .advanced-content {
            margin-top: 1rem;
            display: none;
        }
        .advanced-content.show {
            display: block;
        }
        .field-type {
            display: inline-block;
            padding: 0.25rem 0.5rem;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-right: 0.5rem;
        }
        .type-gradient {
            background-color: rgba(157, 78, 221, 0.1);
            color: var(--gradient-color);
        }
        .type-curl {
            background-color: rgba(42, 157, 143, 0.1);
            color: var(--streamline-color);
        }
        .type-divergence {
            background-color: rgba(230, 57, 70, 0.1);
            color: var(--vector-color);
        }
        .overlay-controls {
            position: absolute;
            top: 1rem;
            right: 1rem;
            z-index: 10;
            background-color: rgba(255, 255, 255, 0.9);
            border-radius: 6px;
            padding: 0.75rem;
            border: 1px solid var(--border-color);
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
        }