:root {
            font-family: 'Poppins', sans-serif;
        }
        
        .exam-set-group {
            background: #fff;
            border-radius: 10px;
            box-shadow: 0 0 20px rgba(0,0,0,0.05);
            padding: 25px;
            margin-bottom: 30px;
            font-family: 'Poppins', sans-serif;
        }
        
        .exam-set-title {
            color: #2c3e50;
            font-size: 1.8rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            padding: 15px 20px;
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            border-radius: 8px;
            border-left: 5px solid #2196F3;
            display: flex;
            align-items: center;
            position: relative;
            font-family: 'Poppins', sans-serif;
        }
        
        .exam-set-title::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(to right, #2196F3 0%, transparent 100%);
        }
        
        .course-item {
            background: #ffffff;
            border: 1px solid #e0e0e0;
            border-radius: 8px;
            padding: 25px;
            margin-bottom: 20px;
            transition: all 0.3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }
        
        .course-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 15px rgba(33, 150, 243, 0.1);
            border-color: #2196F3;
        }
        
        .course-content {
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        
        .course-content h4 {
            font-size: 1.1rem;
            color: #2c3e50;
            margin-bottom: 15px;
            text-align: center;
            font-weight: 600;
            flex-grow: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0 10px;
            min-height: 60px;
            line-height: 1.4;
            font-family: 'Poppins', sans-serif;
        }
        
        .question-count {
            color: #666;
            font-size: 0.9rem;
            margin-bottom: 15px;
        }
        
        .bottom-content {
            margin-top: auto;
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #f0f0f0;
        }
        
        .btn-primary {
            background: linear-gradient(135deg, #2196F3 0%, #1976D2 100%);
            border: none;
            padding: 10px 25px;
            border-radius: 5px;
            font-weight: 500;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            font-size: 0.9rem;
            transition: all 0.3s ease;
        }
        
        .btn-primary:hover {
            background: linear-gradient(135deg, #1976D2 0%, #1565C0 100%);
            transform: translateY(-1px);
            box-shadow: 0 4px 8px rgba(33, 150, 243, 0.2);
        }
        .loading-spinner {
    margin-top: 15px;
}

.view-more-btn {
    transition: all 0.3s ease;
}

.view-more-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.section-container {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 12px;
    margin-bottom: 30px;
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 20px;
}

.section-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: linear-gradient(to right, #2196F3, transparent);
}

.section-header h2 {
    color: #2c3e50;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    font-family: 'Poppins', sans-serif;
}

.section-header .icon {
    font-size: 2rem;
    color: #2196F3;
    margin-top: 10px;
}

.no-content-message {
    text-align: center;
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 8px;
    margin: 1rem 0;
    color: #6c757d;
    font-size: 1.1rem;
}

.no-content-message i {
    margin-right: 8px;
    color: #17a2b8;
}