: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;
            --medical-yellow: #ffc107;
            --medical-orange: #fd7e14;
            --medical-blue: #0d6efd;
            --medical-purple: #6f42c1;
        }
         
        
        .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);
        }
          
        /* Comparison table */
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
        }
        
        .comparison-table th, .comparison-table td {
            padding: 0.75rem;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }
        
        .comparison-table th {
            background-color: var(--light-gray);
            font-weight: 600;
        }
        
        .comparison-table tr:hover {
            background-color: rgba(44, 125, 160, 0.05);
        }
        
        /* 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);
        }
  
        /* BMI specific styles */
        .bmi-input-group {
            display: flex;
            align-items: center;
            margin-bottom: 1rem;
        }
        
        .bmi-classification {
            padding: 1rem;
            border-radius: 8px;
            margin: 1rem 0;
            border-left: 5px solid;
        }
        
        .bmi-underweight {
            background-color: rgba(13, 110, 253, 0.1);
            border-left-color: var(--medical-blue);
        }
        
        .bmi-healthy {
            background-color: rgba(40, 167, 69, 0.1);
            border-left-color: var(--medical-green);
        }
        
        .bmi-overweight {
            background-color: rgba(255, 193, 7, 0.1);
            border-left-color: var(--medical-yellow);
        }
        
        .bmi-obese {
            background-color: rgba(220, 53, 69, 0.1);
            border-left-color: var(--medical-red);
        }
        
        .bmi-severely-obese {
            background-color: rgba(111, 66, 193, 0.1);
            border-left-color: var(--medical-purple);
        }
        
        .bmi-chart-container {
            position: relative;
            height: 300px;
            width: 100%;
            margin: 1.5rem 0;
        }
        
        .bmi-status-indicator {
            display: inline-block;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            margin-right: 8px;
        }
        
        .status-underweight {
            background-color: var(--medical-blue);
        }
        
        .status-healthy {
            background-color: var(--medical-green);
        }
        
        .status-overweight {
            background-color: var(--medical-yellow);
        }
        
        .status-obese {
            background-color: var(--medical-red);
        }
        
        .status-severely-obese {
            background-color: var(--medical-purple);
        }
        
        /* Percentile indicator */
        .percentile-indicator {
            width: 100%;
            height: 40px;
            background: linear-gradient(to right, var(--medical-blue) 0%, var(--medical-green) 15%, var(--medical-yellow) 85%, var(--medical-red) 100%);
            border-radius: 20px;
            position: relative;
            margin: 1rem 0;
        }
        
        .percentile-marker {
            position: absolute;
            top: -10px;
            width: 4px;
            height: 60px;
            background-color: #333;
            transform: translateX(-50%);
        }
        
        .percentile-label {
            position: absolute;
            top: 50px;
            left: 0;
            transform: translateX(-50%);
            font-size: 0.8rem;
            white-space: nowrap;
        }
        
        /* Age input styling */
        .age-input-container {
            display: flex;
            gap: 15px;
        }
        
        .age-input {
            flex: 1;
        }
        
        .age-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 5px;
        }
        
        /* Growth chart styling */
        .growth-chart-container {
            position: relative;
            height: 350px;
            width: 100%;
            margin: 1.5rem 0;
        }
        
        /* Clinical disclaimer */
        .clinical-disclaimer {
            background-color: rgba(255, 193, 7, 0.1);
            border-left: 4px solid var(--medical-yellow);
            padding: 1rem;
            margin: 1rem 0;
            border-radius: 0 4px 4px 0;
            font-size: 0.9rem;
        }
        
        /* Method info */
        .method-info {
            background-color: rgba(169, 214, 229, 0.1);
            border-left: 3px solid var(--secondary-color);
            padding: 1rem;
            margin: 1rem 0;
            border-radius: 0 4px 4px 0;
            font-size: 0.9rem;
        }
        
        /* Z-score display */
        .z-score-display {
            display: inline-block;
            background-color: var(--light-gray);
            padding: 0.25rem 0.75rem;
            border-radius: 4px;
            font-family: monospace;
            font-weight: 600;
        }
        
        /* Accuracy badge */
        .accuracy-badge {
            display: inline-block;
            background-color: var(--medical-green);
            color: white;
            padding: 0.25rem 0.75rem;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-left: 0.5rem;
        }
        
        /* Age warning */
        .age-warning {
            background-color: rgba(255, 193, 7, 0.15);
            border-left: 4px solid var(--medical-orange);
            padding: 0.75rem;
            margin: 1rem 0;
            border-radius: 0 4px 4px 0;
            font-size: 0.9rem;
        }
        
        /* Enhanced disclaimer box */
        .enhanced-disclaimer {
            background-color: rgba(220, 53, 69, 0.08);
            border-left: 4px solid var(--medical-red);
            padding: 1.25rem;
            margin: 1.5rem 0;
            border-radius: 0 6px 6px 0;
        }
        
        .enhanced-disclaimer strong {
            color: var(--medical-red);
        }
        
        .health-tips-box {
            background-color: rgba(40, 167, 69, 0.08);
            border-left: 4px solid var(--medical-green);
            padding: 1.25rem;
            margin: 1.5rem 0;
            border-radius: 0 6px 6px 0;
        }