: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;
        }
         
        .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);
        }
         
        .medical-info-box {
            background-color: rgba(220, 53, 69, 0.05);
            border-left: 3px solid var(--medical-red);
            padding: 1rem;
            border-radius: 0 4px 4px 0;
            margin: 1.5rem 0;
        }
         
        
        /* 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;
        }
        
        /* 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);
        }
        
        .generating-indicator {
            display: none;
            text-align: center;
            padding: 1rem;
            color: var(--text-muted);
        }
        
        /* Additional muscle-specific styling */
        .muscle-diagram-container {
            width: 100%;
            max-width: 400px;
            height: 300px;
            margin: 1rem auto;
            position: relative;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            background-color: #f8f9fa;
            overflow: hidden;
        }
        
        .muscle-diagram {
            width: 100%;
            height: 100%;
            position: relative;
        }
        
        .bone {
            position: absolute;
            background-color: #8B7355;
            border-radius: 3px;
        }
        
        .bone-1 {
            width: 250px;
            height: 15px;
            top: 150px;
            left: 50px;
            transform-origin: left center;
        }
        
        .bone-2 {
            width: 200px;
            height: 15px;
            top: 150px;
            left: 300px;
            transform-origin: left center;
            transform: rotate(30deg);
        }
        
        .joint {
            position: absolute;
            width: 25px;
            height: 25px;
            background-color: #A52A2A;
            border-radius: 50%;
            top: 142px;
            left: 300px;
            z-index: 10;
        }
        
        .muscle {
            position: absolute;
            height: 12px;
            background: linear-gradient(to right, #FF6B6B, #FF8E8E);
            border-radius: 6px;
            top: 154px;
            left: 150px;
            transform-origin: left center;
            z-index: 5;
        }
        
        .muscle-insertion {
            position: absolute;
            width: 15px;
            height: 15px;
            background-color: var(--medical-green);
            border-radius: 50%;
            top: 147px;
            left: 150px;
            z-index: 10;
        }
        
        .force-vector {
            position: absolute;
            height: 4px;
            background-color: var(--primary-color);
            top: 160px;
            left: 150px;
            transform-origin: left center;
            z-index: 4;
        }
        
        .force-vector::after {
            content: '';
            position: absolute;
            right: -10px;
            top: -8px;
            width: 0;
            height: 0;
            border-left: 10px solid var(--primary-color);
            border-top: 10px solid transparent;
            border-bottom: 10px solid transparent;
        }
        
        .angle-indicator {
            position: absolute;
            width: 80px;
            height: 80px;
            top: 120px;
            left: 140px;
            border-radius: 50%;
            border: 2px dashed rgba(44, 125, 160, 0.3);
        }
        
        .angle-text {
            position: absolute;
            font-size: 14px;
            color: var(--primary-color);
            font-weight: bold;
        }
        
        .moment-arm {
            position: absolute;
            height: 2px;
            background-color: var(--medical-red);
            top: 150px;
            left: 300px;
            width: 0;
        }
        
        .moment-arm::before, .moment-arm::after {
            content: '';
            position: absolute;
            width: 8px;
            height: 8px;
            background-color: var(--medical-red);
            border-radius: 50%;
        }
        
        .moment-arm::before {
            left: 0;
            top: -3px;
        }
        
        .moment-arm::after {
            right: 0;
            top: -3px;
        }
        
        .moment-arm-text {
            position: absolute;
            font-size: 12px;
            color: var(--medical-red);
            font-weight: bold;
            bottom: -20px;
            left: 50%;
            transform: translateX(-50%);
        }
        
        .preset-selector {
            margin-bottom: 1.5rem;
        }
        
        .preset-btn {
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
        }
        
        .real-time-toggle {
            display: flex;
            align-items: center;
            margin-bottom: 1rem;display:none
        }
        
        .real-time-toggle label {
            margin-left: 0.5rem;
            font-weight: 500;
        }
        
        .status-indicator {
            display: inline-block;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            margin-right: 8px;
        }
        
        .status-low {
            background-color: var(--medical-red);
        }
        
        .status-normal {
            background-color: var(--medical-green);
        }
        
        .status-high {
            background-color: var(--warning-color);
        }
        
        .status-unknown {
            background-color: var(--text-muted);
        }