/*--------------------------------------------------------------
# Cbt index
--------------------------------------------------------------*/
        :root {
            --primary-color: #007bff;
            --secondary-color: #6c757d;
            --success-color: #28a745;
            --danger-color: #dc3545;
            --warning-color: #ffc107;
            --info-color: #17a2b8;
            --dark-color: #343a40;
            --light-color: #f8f9fa;
            --student-color: #9c27b0;
            --jamb-color: #ff6b35;
            --waec-color: #4ecdc4;
        }

        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        /* Main Content */
        .main-content {
            padding: 2rem 0;
            min-height: calc(100vh - 80px);
        }

        /* Credit Card for Users */
        .credit-card {
            background: linear-gradient(135deg, var(--success-color), #20c997);
            color: white;
            border-radius: 15px;
            padding: 1.5rem;
            margin-bottom: 2rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }

        /* Student Card */
        .student-card {
            background: linear-gradient(135deg, var(--student-color), #673ab7);
            color: white;
            border-radius: 15px;
            padding: 1.5rem;
            margin-bottom: 2rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }

        .credit-amount, .student-status {
            font-size: 2rem;
            font-weight: bold;
            margin-bottom: 0.5rem;
        }

        /* Subject Selection */
        .subject-selection {
            background: white;
            border-radius: 15px;
            padding: 2rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            margin-bottom: 2rem;
        }

        .subjects-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin: 1.5rem 0;
        }

        .subject-card {
            background: #f8f9fa;
            border: 2px solid #e9ecef;
            border-radius: 10px;
            padding: 1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            text-align: center;
            position: relative;
        }

        .subject-card:hover {
            border-color: var(--primary-color);
            background: #e3f2fd;
        }

        .subject-card.selected {
            border-color: var(--success-color);
            background: #d4edda;
        }

        .subject-card.mandatory {
            border-color: var(--jamb-color);
            background: #fff3cd;
        }

        .subject-card.mandatory.selected {
            border-color: var(--jamb-color);
            background: #ffeaa7;
        }

        .subject-card.disabled {
            opacity: 0.6;
            cursor: not-allowed;
            background: #f1f1f1;
        }

        .subject-card input[type="checkbox"] {
            display: none;
        }

        .subject-icon {
            width: 50px;
            height: 50px;
            background: linear-gradient(45deg, var(--primary-color), #0056b3);
            border-radius: 50%;
            margin: 0 auto 0.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
        }

        .subject-card.selected .subject-icon {
            background: linear-gradient(45deg, var(--success-color), #20c997);
        }

        .subject-card.mandatory .subject-icon {
            background: linear-gradient(45deg, var(--jamb-color), #ff5722);
        }

        .mandatory-badge {
            position: absolute;
            top: -5px;
            right: -5px;
            background: var(--jamb-color);
            color: white;
            border-radius: 50%;
            width: 25px;
            height: 25px;
            font-size: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        /* Exam Configuration */
        .exam-config {
            background: white;
            border-radius: 15px;
            padding: 2rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            margin-bottom: 2rem;
        }

        /* WAEC Mode Selection */
        .waec-mode-selection {
            background: linear-gradient(45deg, #e8f5e8, #f0fff0);
            border: 2px solid var(--waec-color);
            border-radius: 10px;
            padding: 1.5rem;
            margin: 1rem 0;
        }

        .mode-option {
            background: white;
            border: 2px solid #e9ecef;
            border-radius: 8px;
            padding: 1rem;
            margin: 0.5rem 0;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .mode-option:hover {
            border-color: var(--waec-color);
            background: #f0ffff;
        }

        .mode-option.selected {
            border-color: var(--waec-color);
            background: #e0fefe;
        }

        .mode-option input[type="radio"] {
            display: none;
        }

        .form-control, .form-select {
            border: 2px solid #e1e8ed;
            border-radius: 8px;
            padding: 12px 15px;
            transition: all 0.3s ease;
        }

        .form-control:focus, .form-select:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
        }

        .btn-start-exam {
            background: linear-gradient(45deg, var(--success-color), #20c997);
            border: none;
            color: white;
            padding: 15px 40px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 1.1rem;
            transition: all 0.3s ease;
        }

        .btn-start-exam:hover {
            background: linear-gradient(45deg, #20c997, #17a2b8);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(40, 167, 69, 0.3);
            color: white;
        }

        .btn-start-exam.jamb {
            background: linear-gradient(45deg, var(--jamb-color), #ff5722);
        }

        .btn-start-exam.jamb:hover {
            background: linear-gradient(45deg, #ff5722, #e64a19);
        }

        .btn-start-exam.waec {
            background: linear-gradient(45deg, var(--waec-color), #26a69a);
        }

        .btn-start-exam.waec:hover {
            background: linear-gradient(45deg, #26a69a, #00695c);
        }

        .btn-buy-credit {
            background: linear-gradient(45deg, var(--warning-color), #ff8c00);
            border: none;
            color: white;
            padding: 8px 20px;
            border-radius: 6px;
            font-weight: 500;
            text-decoration: none;
            display: inline-block;
            transition: all 0.3s ease;
        }

        .btn-buy-credit:hover {
            background: linear-gradient(45deg, #ff8c00, #ff7300);
            color: white;
            text-decoration: none;
        }

        /* Selection Counter */
        .selection-counter {
            position: sticky;
            top: 20px;
            background: white;
            border: 2px solid var(--primary-color);
            border-radius: 10px;
            padding: 1rem;
            text-align: center;
            box-shadow: 0 3px 10px rgba(0,0,0,0.1);
        }

        .selection-counter.jamb {
            border-color: var(--jamb-color);
        }

        .selection-counter.waec {
            border-color: var(--waec-color);
        }

        .counter-number {
            font-size: 2rem;
            font-weight: bold;
            color: var(--primary-color);
        }

        .counter-number.jamb {
            color: var(--jamb-color);
        }

        .counter-number.waec {
            color: var(--waec-color);
        }

        .counter-text {
            color: #666;
            font-size: 0.9rem;
        }

        /* Stats Cards */
        .stat-card {
            background: white;
            border-radius: 10px;
            padding: 1.5rem;
            text-align: center;
            box-shadow: 0 3px 10px rgba(0,0,0,0.1);
        }

        .stat-number {
            font-size: 2rem;
            font-weight: bold;
            color: var(--primary-color);
        }

        .stat-label {
            color: #666;
            font-size: 0.9rem;
        }

        /* Exam Info */
        .exam-info {
            background: linear-gradient(45deg, #e3f2fd, #f3e5f5);
            border: 1px solid #bbdefb;
            border-radius: 10px;
            padding: 1.5rem;
            margin: 1.5rem 0;
        }

        .exam-info.jamb {
            background: linear-gradient(45deg, #fff3e0, #fce4ec);
            border-color: var(--jamb-color);
        }

        .exam-info.waec {
            background: linear-gradient(45deg, #e0f2f1, #f1f8e9);
            border-color: var(--waec-color);
        }

        .exam-info h6 {
            color: var(--primary-color);
            font-weight: 600;
        }

        .exam-info.jamb h6 {
            color: var(--jamb-color);
        }

        .exam-info.waec h6 {
            color: var(--waec-color);
        }

        /* Alert styles for different exam types */
        .exam-type-alert {
            border-radius: 10px;
            padding: 1rem;
            margin: 1rem 0;
        }

        .exam-type-alert.jamb {
            background: linear-gradient(45deg, #fff3e0, #ffe0b2);
            border: 2px solid var(--jamb-color);
            color: #bf360c;
        }

        .exam-type-alert.waec {
            background: linear-gradient(45deg, #e0f2f1, #b2dfdb);
            border: 2px solid var(--waec-color);
            color: #00695c;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .subjects-grid {
                grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
                gap: 0.8rem;
            }
            
            .selection-counter {
                position: relative;
                margin-bottom: 1rem;
            }
        }