* {
    box-sizing: border-box;
}

.review-module {
    max-width: 1280px;
    margin: 0 auto;
    padding: 20px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    overflow-x: hidden;
}

.review-tabs {
    display: flex;
    margin-bottom: 30px;
    border-bottom: 2px solid #e5e7eb;
    gap: 0;
}

.tab-button {
    background: none;
    border: none;
    padding: 15px 30px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    color: #6b7280;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
    flex: 1;
    text-align: center;
    outline: none;
}

.tab-button:hover {
    color: #374151;
    background-color: #f9fafb;
}

.tab-button.active {
    color: #2563eb;
    border: none;
    border-bottom: 3px solid #e6c04d;
    background-color: #eff6ff;
    outline: none;
}

.tab-button:focus {
    outline: none;
    border: none;
    border-bottom: 3px solid transparent;
}

.tab-button.active:focus {
    outline: none;
    border: none;
    border-bottom: 3px solid #e6c04d;
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-in;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 25px;
    margin-top: 20px;
    width: 100%;
}

.review-card {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    word-wrap: break-word;
    overflow-wrap: break-word;
    width: 100%;
}

.review-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.review-header {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.student-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 18px;
    margin-right: 15px;
    overflow: hidden;
}

.student-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.student-info h4 {
    margin: 0 0 5px 0;
    font-size: 16px;
    font-weight: 600;
    color: #111827;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

.student-grade {
    font-size: 14px;
    color: #6b7280;
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

.review-text {
    color: #374151;
    line-height: 1.6;
    font-size: 15px;
    margin-bottom: 15px;
    word-wrap: break-word;
    overflow-wrap: break-word;
    max-width: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

.review-subjects {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.subject-tag {
    background: #eff6ff;
    color: #1d4ed8;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

.section-header {
    text-align: center;
    margin-bottom: 30px;
}

.section-title {
    font-size: 24px;
    font-weight: 700;
    color: #111827;
    margin-bottom: 10px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

.section-subtitle {
    color: #6b7280;
    font-size: 16px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

@media (max-width: 768px) {
    .review-module {
        padding: 15px;
    }
    
    .tab-button {
        padding: 12px 20px;
        font-size: 14px;
    }
    
    .reviews-grid {
        grid-template-columns: minmax(0, 1fr);
    }
    
    .review-card {
        padding: 20px;
    }
}

@media (max-width: 1024px) and (min-width: 769px) {
    .reviews-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}