/* Поиск и фильтры */
.materials-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    background: white;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.search-box {
    display: flex;
    flex-grow: 1;
    max-width: 400px;
}

.search-box input {
    flex-grow: 1;
    padding: 12px 20px;
    border: 2px solid var(--light-color);
    border-radius: var(--border-radius) 0 0 var(--border-radius);
    font-size: 16px;
    outline: none;
    transition: var(--transition);
}

.search-box input:focus {
    border-color: var(--accent-color);
}

.search-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0 25px;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    cursor: pointer;
    font-size: 16px;
    transition: var(--transition);
}

.search-btn:hover {
    background: var(--secondary-color);
}

.materials-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.filter-btn {
    background: var(--light-color);
    color: var(--text-color);
    border: none;
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: white;
}

/* Категории материалов */
.materials-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 40px 0 60px;
}

.category-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    height: 100%;
}

.category-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
    background: var(--primary-color);
    color: white;
}

.category-card:hover .category-icon i,
.category-card:hover .category-count {
    color: white;
}

.category-icon {
    font-size: 50px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.category-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.category-card p {
    color: #666;
    margin-bottom: 15px;
    font-size: 0.95rem;
}

.category-card:hover p {
    color: rgba(255, 255, 255, 0.9);
}

.category-count {
    display: inline-block;
    background: var(--light-color);
    color: var(--primary-color);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

/* Карточки материалов */
.popular-materials,
.all-materials {
    margin-bottom: 60px;
}

.materials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.material-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    height: 100%;
}

.material-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.material-image {
    height: 200px;
    overflow: hidden;
}

.material-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.material-card:hover .material-image img {
    transform: scale(1.05);
}

.material-content {
    padding: 25px;
    display: flex;
    flex-direction: column;
    height: calc(100% - 200px);
}

.material-category {
    margin-bottom: 15px;
}

.material-card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--dark-color);
    line-height: 1.4;
}

.material-author {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.material-description {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
    flex-grow: 1;
}

.material-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: auto;
}

.material-info {
    display: flex;
    gap: 15px;
    color: #999;
    font-size: 0.9rem;
    flex-wrap: wrap;
}

.material-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.preview-btn,
.download-btn,
.enroll-btn {
    padding: 8px 16px;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: var(--transition);
    white-space: nowrap;
}

.preview-btn {
    background: var(--light-color);
    color: var(--primary-color);
}

.download-btn {
    background: var(--primary-color);
    color: white;
}

.enroll-btn {
    background: var(--success-color);
    color: white;
}

.preview-btn:hover {
    background: #d5d8f0;
}

.download-btn:hover {
    background: var(--secondary-color);
}

.enroll-btn:hover {
    background: #3d8b40;
}

/* Таблица материалов */
.materials-table {
    overflow-x: auto;
    margin: 40px 0;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.materials-table table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

.materials-table th,
.materials-table td {
    padding: 15px 20px;
    text-align: left;
    border-bottom: 1px solid #f0f0f0;
}

.materials-table th {
    background: var(--light-color);
    color: var(--primary-color);
    font-weight: 600;
    white-space: nowrap;
}

.materials-table tr:hover {
    background: #f9f9f9;
}

.table-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.table-badge.books {
    background: #e3f2fd;
    color: #1565c0;
}

.table-badge.guides {
    background: #f3e5f5;
    color: #7b1fa2;
}

.table-badge.courses {
    background: #fff8e1;
    color: #ff8f00;
}

.table-badge.software {
    background: #e8f5e9;
    color: #2e7d32;
}

.table-btn {
    background: none;
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    margin: 0 2px;
}

.table-btn.preview {
    color: var(--primary-color);
}

.table-btn.download {
    color: var(--success-color);
}

.table-btn.enroll {
    color: var(--warning-color);
}

.table-btn:hover {
    background: var(--light-color);
}

/* Запрос материалов */
.request-materials {
    margin: 60px 0;
}

.request-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 40px;
    text-align: center;
    box-shadow: var(--shadow);
}

.request-card h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.request-card p {
    color: #666;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.request-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.request-btn,
.suggest-btn {
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
    font-size: 1rem;
}

.request-btn {
    background: var(--primary-color);
    color: white;
}

.suggest-btn {
    background: var(--light-color);
    color: var(--primary-color);
}

.request-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

.suggest-btn:hover {
    background: #d5d8f0;
    transform: translateY(-2px);
}

/* Responsive для education-materials.html */
@media (max-width: 768px) {
    .materials-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        max-width: 100%;
    }
    
    .materials-filters {
        justify-content: center;
    }
    
    .materials-grid {
        grid-template-columns: 1fr;
    }
    
    .materials-categories {
        grid-template-columns: 1fr;
    }
    
    .material-footer {
        flex-direction: column;
        align-items: stretch;
    }
    
    .material-actions {
        width: 100%;
        justify-content: center;
    }
    
    .request-buttons {
        flex-direction: column;
    }
    
    .request-btn,
    .suggest-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .material-actions {
        flex-direction: column;
    }
    
    .preview-btn,
    .download-btn,
    .enroll-btn {
        width: 100%;
        justify-content: center;
    }
}