:root {
 
            --accent-color: #553c9a;
            --light-gray: #f8f9fa;
            --border-color: #eaeaea;
            --text-color: #333;
            --text-muted: #6c757d;
            --success-color: #28a745;
            --warning-color: #ffc107;
            --danger-color: #dc3545;
            --info-color: #17a2b8;
        }
          
        
        /* Measurement Cards */
        .measurement-cards {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        
        .measurement-card {
            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);
            transition: transform 0.3s;
        }
        
        .measurement-card:hover {
            transform: translateY(-5px);
        }
        
        .measurement-card h4 {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
        }
        
        .measurement-card .value {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 0.5rem;
        }
        
        .measurement-card .change {
            font-size: 0.9rem;
            padding: 0.25rem 0.5rem;
            border-radius: 4px;
            display: inline-block;
        }
        
        .change-positive {
            background-color: rgba(40, 167, 69, 0.1);
            color: var(--success-color);
        }
        
        .change-negative {
            background-color: rgba(220, 53, 69, 0.1);
            color: var(--danger-color);
        }
        
        .change-neutral {
            background-color: rgba(108, 117, 125, 0.1);
            color: var(--text-muted);
        }
        
        /* History Table */
        .history-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
        }
        
        .history-table th, .history-table td {
            padding: 0.75rem;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }
        
        .history-table th {
            background-color: var(--light-gray);
            font-weight: 600;
            position: sticky;
            top: 0;
        }
        
        .history-table tr:hover {
            background-color: rgba(111, 66, 193, 0.05);
        }
        
        /* Chart Container */
        .chart-container {
            position: relative;
            height: 400px;
            width: 100%;
            margin: 2rem 0;
        }
        
        /* Responsive Adjustments */
        @media (max-width: 768px) { 
            
            .measurement-cards {
                grid-template-columns: 1fr;
            }
        }
          
        /* Tabs */
        .nav-tabs {
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 1.5rem;
        }
        
        .nav-tabs .nav-link {
            border: none;
            color: var(--text-muted);
            font-weight: 600;
            padding: 0.75rem 1.5rem;
        }
        
        .nav-tabs .nav-link.active {
            color: var(--primary-color);
            border-bottom: 3px solid var(--primary-color);
            background-color: transparent;
        }
        
        /* Measurement form */
        .measurement-form-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 1rem;
            margin-bottom: 1.5rem;
        }
        
        /* Body diagram */
        .body-diagram {
            text-align: center;
            margin: 2rem 0;
            position: relative;
        }
        
        .body-point {
            position: absolute;
            width: 20px;
            height: 20px;
            background-color: var(--primary-color);
            border-radius: 50%;
            cursor: pointer;
            transform: translate(-50%, -50%);
            transition: all 0.3s;
        }
        
        .body-point:hover {
            background-color: var(--accent-color);
            transform: translate(-50%, -50%) scale(1.2);
        }
        
        .body-point.active {
            background-color: var(--accent-color);
            box-shadow: 0 0 0 3px rgba(111, 66, 193, 0.3);
        }
        
        /* Progress indicators */
        .progress-container {
            margin: 1.5rem 0;
        }
        
        .progress-label {
            display: flex;
            justify-content: space-between;
            margin-bottom: 0.5rem;
        }
        
        .progress-bar-custom {
            height: 10px;
            border-radius: 5px;
            background-color: var(--light-gray);
            overflow: hidden;
        }
        
        .progress-fill {
            height: 100%;
            background-color: var(--primary-color);
            transition: width 0.5s ease;
        }
        
        /* Data export buttons */
        .export-buttons {
            display: flex;
            gap: 0.5rem;
            margin-top: 1rem;
            flex-wrap: wrap;
        }
      
        
        /* Unit toggle */
        .unit-toggle {
            display: flex;
            background-color: var(--light-gray);
            border-radius: 6px;
            padding: 4px;
            margin-bottom: 1rem;
            width: fit-content;
        }
        
        .unit-btn {
            padding: 0.5rem 1rem;
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.3s;
            font-weight: 500;
        }
        
        .unit-btn.active {
            background-color: var(--primary-color);
            color: white;
        }