:root {
            --primary-color: #2c7da0;
            --secondary-color: #a9d6e5;
            --accent-color: #01497c;
            --light-gray: #f8f9fa;
            --border-color: #eaeaea;
            --text-color: #333;
            --text-muted: #6c757d;
            --success-color: #28a745;
            --warning-color: #ffc107;
            --medical-red: #dc3545;
            --medical-green: #198754;
            --nutrition-orange: #fd7e14;
        }
         
        .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);
        }
         
        /* Metabolic Summary */
        .metabolic-summary {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        
        .metabolic-item {
            background: white;
            border-radius: 8px;
            padding: 1.5rem;
            border: 1px solid var(--border-color);
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }
        
        .metabolic-item h4 {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 0.5rem;
        }
        
        .metabolic-item .value {
            font-size: 1.5rem;
            font-weight: 700;
        }
        
        .metabolic-item .detail {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 0.5rem;
        }
         
        .nutrition-info-box {
            background-color: rgba(253, 126, 20, 0.05);
            border-left: 3px solid var(--nutrition-orange);
            padding: 1rem;
            border-radius: 0 4px 4px 0;
            margin: 1.5rem 0;
        }
         
        /* Responsive Adjustments */
        @media (max-width: 768px) { 
            .metabolic-summary {
                grid-template-columns: 1fr;
            }
        }
        
        /* Toggle switch for calculation modes */
        .calculation-modes {
            display: flex;
            background-color: var(--light-gray);
            border-radius: 6px;
            padding: 4px;
            margin-bottom: 1.5rem;
            flex-wrap: wrap;
        }
        
        .mode-btn {
            flex: 1;
            text-align: center;
            padding: 0.75rem;
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.3s;
            font-weight: 600;
            min-width: 120px;
            margin: 2px;
        }
        
        .mode-btn.active {
            background-color: var(--primary-color);
            color: white;
        }
         
        /* Mode-specific form styling */
        .mode-form {
            display: none;
        }
        
        .mode-form.active {
            display: block;
        }
        
        /* Medical-specific styling */
        .medical-alert {
            background-color: rgba(220, 53, 69, 0.1);
            border-left: 4px solid var(--medical-red);
            padding: 1rem;
            margin: 1rem 0;
            border-radius: 0 4px 4px 0;
        }
        
        .normal-range {
            color: var(--medical-green);
            font-weight: 600;
        }
        
        .abnormal-range {
            color: var(--medical-red);
            font-weight: 600;
        }
        
        .reference-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
        }
        
        .reference-table th, .reference-table td {
            padding: 0.75rem;
            text-align: left;
            border: 1px solid var(--border-color);
        }
        
        .reference-table th {
            background-color: var(--light-gray);
            font-weight: 600;
        }
        
        .reference-table tr:nth-child(even) {
            background-color: rgba(44, 125, 160, 0.05);
        }
         
        .severity-indicator {
            display: inline-block;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            margin-right: 8px;
        }
        
        .severity-normal {
            background-color: var(--medical-green);
        }
        
        .severity-mild {
            background-color: #ffc107;
        }
        
        .severity-moderate {
            background-color: #fd7e14;
        }
        
        .severity-severe {
            background-color: var(--medical-red);
        }
        
        .parameter-row {
            display: flex;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color);
        }
        
        .parameter-row:last-child {
            border-bottom: none;
        }
        
        .parameter-name {
            font-weight: 600;
        }
        
        .parameter-value {
            text-align: right;
        }
        
        .parameter-detail {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        
        .validation-error {
            color: var(--medical-red);
            font-size: 0.875rem;
            margin-top: 0.25rem;
        }
        
        .goal-badge {
            display: inline-block;
            padding: 0.25rem 0.5rem;
            border-radius: 4px;
            font-size: 0.875rem;
            font-weight: 600;
            margin-left: 0.5rem;
        }
        
        .goal-maintenance {
            background-color: rgba(44, 125, 160, 0.1);
            color: var(--primary-color);
        }
        
        .goal-weight-loss {
            background-color: rgba(40, 167, 69, 0.1);
            color: var(--medical-green);
        }
        
        .goal-weight-gain {
            background-color: rgba(253, 126, 20, 0.1);
            color: var(--nutrition-orange);
        }
        
        .unit-toggle {
            display: flex;
            margin-bottom: 1rem;
        }
        
        .unit-toggle .btn {
            flex: 1;
        }
        
        .measurement-inputs {
            display: none;
        }
        
        .measurement-inputs.active {
            display: block;
        }