: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;
            --error-color: #dc3545;
            --psychology-purple: #6f42c1;
            --psychology-blue: #0d6efd;
            --psychology-green: #198754;
            --psychology-red: #dc3545;
            --psychology-yellow: #ffc107;
        }
         
        .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);
        }
         
        /* Stroop Summary */
        .stroop-summary {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        
        .stroop-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);
        }
        
        .stroop-item h4 {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 0.5rem;
        }
        
        .stroop-item .value {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-color);
        }
        
        .stroop-item .detail {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 0.5rem;
        }
         
        .psychology-info-box {
            background-color: rgba(111, 66, 193, 0.05);
            border-left: 3px solid var(--psychology-purple);
            padding: 1rem;
            border-radius: 0 4px 4px 0;
            margin: 1.5rem 0;
        }
         
        /* Responsive Adjustments */
        @media (max-width: 768px) {
 
            
            .stroop-summary {
                grid-template-columns: 1fr;
            }
        }
        
        /* Toggle switch for test modes */
        .test-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;
        }
        
      
        /* Stroop-specific styling */
        .psychology-alert {
            background-color: rgba(220, 53, 69, 0.1);
            border-left: 4px solid var(--error-color);
            padding: 1rem;
            margin: 1rem 0;
            border-radius: 0 4px 4px 0;
        }
        
        .fast-range {
            color: var(--psychology-green);
            font-weight: 600;
        }
        
        .average-range {
            color: var(--psychology-blue);
            font-weight: 600;
        }
        
        .slow-range {
            color: var(--psychology-yellow);
            font-weight: 600;
        }
        
        .very-slow-range {
            color: var(--psychology-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);
        }
        
        /* Test results styling */
        .test-results {
            padding: 1rem;
            border-radius: 8px;
            margin: 1rem 0;
            border-left: 5px solid;
        }
        
        .test-excellent {
            background-color: rgba(40, 167, 69, 0.1);
            border-left-color: var(--psychology-green);
        }
        
        .test-good {
            background-color: rgba(13, 110, 253, 0.1);
            border-left-color: var(--psychology-blue);
        }
        
        .test-average {
            background-color: rgba(255, 193, 7, 0.1);
            border-left-color: var(--psychology-yellow);
        }
        
        .test-poor {
            background-color: rgba(253, 126, 20, 0.1);
            border-left-color: #fd7e14;
        }
        
        .test-very-poor {
            background-color: rgba(220, 53, 69, 0.1);
            border-left-color: var(--psychology-red);
        }
        
        .stroop-chart-container {
            position: relative;
            height: 300px;
            width: 100%;
            margin: 1.5rem 0;
        }
        
        .status-indicator {
            display: inline-block;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            margin-right: 8px;
        }
        
        .status-excellent {
            background-color: var(--psychology-green);
        }
        
        .status-good {
            background-color: var(--psychology-blue);
        }
        
        .status-average {
            background-color: var(--psychology-yellow);
        }
        
        .status-poor {
            background-color: #fd7e14;
        }
        
        .status-very-poor {
            background-color: var(--psychology-red);
        }
        
        /* Stroop test display */
        .stroop-test-display {
            height: 300px;
            background-color: #f8f9fa;
            border-radius: 12px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            margin: 2rem 0;
            border: 2px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        
        .stroop-word {
            font-size: 4rem;
            font-weight: 800;
            margin-bottom: 2rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
            transition: all 0.3s;text-align:center
        }
        
        .stroop-instruction {
            font-size: 1.2rem;
            color: var(--text-muted);
            text-align: center;
            margin-top: 1rem;
            padding: 0 2rem;
        }
        
        /* Color buttons */
        .color-buttons {
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
            margin-top: 2rem;
        }
        
        .color-btn {
            width: 100px;
            height: 100px;
            border-radius: 12px;
            border: 3px solid transparent;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
            color: white;
            cursor: pointer;
            transition: all 0.2s;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }
        
        .color-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
        }
        
        .color-btn:active {
            transform: translateY(-1px);
        }
        
        .color-btn.selected {
            border-color: white;
            box-shadow: 0 0 0 4px var(--primary-color);
        }
        
        /* Test progress */
        .test-progress {
            height: 10px;
            background-color: #e9ecef;
            border-radius: 5px;
            margin: 1rem 0;
            overflow: hidden;
        }
        
        .test-progress-bar {
            height: 100%;
            background-color: var(--primary-color);
            width: 0%;
            transition: width 0.5s;
        }
        
        /* Countdown timer */
        .countdown-timer {
            font-size: 3rem;
            font-weight: 700;
            color: var(--primary-color);
            margin: 1rem 0;
        }
        
        /* Test stats */
        .test-stats {
            display: flex;
            justify-content: space-around;
            margin: 1rem 0;
            flex-wrap: wrap;
        }
        
        .stat-item {
            text-align: center;
            padding: 1rem;
            min-width: 120px;
        }
        
        .stat-value {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary-color);
        }
        
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        
        /* Age group selector */
        .age-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }
        
        .age-btn {
            padding: 0.5rem 1rem;
            border-radius: 20px;
            background-color: var(--light-gray);
            border: 1px solid var(--border-color);
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .age-btn.active {
            background-color: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }
        
        /* Reaction time indicator */
        .reaction-indicator {
            display: inline-block;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            margin-right: 10px;
        }
        
        .reaction-fast {
            background-color: var(--psychology-green);
            animation: pulse 1s infinite;
        }
        
        .reaction-medium {
            background-color: var(--psychology-yellow);
            animation: pulse 1.5s infinite;
        }
        
        .reaction-slow {
            background-color: var(--psychology-red);
            animation: pulse 2s infinite;
        }
        
        @keyframes pulse {
            0% { opacity: 0.5; }
            50% { opacity: 1; }
            100% { opacity: 0.5; }
        }
        
        /* Test mode content sections */
        .test-mode-content {
            display: none;
            padding: 1rem;
            background-color: rgba(44, 125, 160, 0.05);
            border-radius: 8px;
            margin: 1rem 0;
            border-left: 3px solid var(--primary-color);
        }
        
        .test-mode-content.active {
            display: block;
        }
        
        /* Test 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;
        }
        
        .history-table tr:hover {
            background-color: rgba(44, 125, 160, 0.05);
        }
        
        /* Stroop color definitions */
        .color-red {
            color: #dc3545;
        }
        
        .color-blue {
            color: #0d6efd;
        }
        
        .color-green {
            color: #198754;
        }
        
        .color-yellow {
            color: #ffc107;
        }
        
        .color-purple {
            color: #6f42c1;
        }
        
        .color-black {
            color: #212529;
        }
        
        .bg-red {
            background-color: #dc3545;
        }
        
        .bg-blue {
            background-color: #0d6efd;
        }
        
        .bg-green {
            background-color: #198754;
        }
        
        .bg-yellow {
            background-color: #ffc107;
        }
        
        .bg-purple {
            background-color: #6f42c1;
        }
        
        .bg-black {
            background-color: #212529;
        }
        
        /* Test ready screen */
        .ready-screen {
            text-align: center;
            padding: 2rem;
        }
        
        .ready-icon {
            font-size: 4rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        
        .ready-text {
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }
        
        /* Score explanation */
        .score-explanation {
            background-color: rgba(111, 66, 193, 0.05);
            border-radius: 8px;
            padding: 1.5rem;
            margin: 1.5rem 0;
        }
        
        .score-item {
            display: flex;
            justify-content: space-between;
            padding: 0.5rem 0;
            border-bottom: 1px solid rgba(111, 66, 193, 0.1);
        }
        
        .score-item:last-child {
            border-bottom: none;
        }