/* Хлебные крошки */
        .breadcrumb {
            margin-bottom: 30px;
            font-size: 14px;
        }

        .breadcrumb a {
            color: #4E5D73;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .breadcrumb a:hover {
            color: #3FC1F9;
        }

        .breadcrumb span {
            color: #8C8C8C;
            margin: 0 8px;
        }

        .breadcrumb .current {
            color: #1E3B66;
            font-weight: 600;
        }

        /* Основной контент */
        .material-detail {
            background: white;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            margin-bottom: 40px;
        }

        .material-main {
            display: grid;
            grid-template-columns: 400px 1fr;
            gap: 40px;
            padding: 40px;
        }

        @media (max-width: 1024px) {
            .material-main {
                grid-template-columns: 300px 1fr;
                gap: 30px;
                padding: 30px;
            }
        }

        @media (max-width: 768px) {
            .material-main {
                grid-template-columns: 1fr;
                gap: 20px;
                padding: 20px;
            }
        }

        /* Левая колонка - изображение */
        .material-image-section {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .material-image {
            width: 100%;
            max-width: 350px;
            height: auto;
            border-radius: 10px;
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
            margin-bottom: 20px;
        }

        .material-actions {
            display: flex;
            flex-direction: column;
            gap: 15px;
            width: 100%;
            max-width: 350px;
        }

        .btn {
            padding: 15px 25px;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            text-align: center;
            border: none;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }

        .btn-primary {
            background: #3FC1F9;
            color: white;
        }

        .btn-primary:hover {
            background: #2ba8e0;
            transform: translateY(-2px);
        }

        .btn-secondary {
            background: white;
            color: #1E3B66;
            border: 2px solid #1E3B66;
        }

        .btn-secondary:hover {
            background: #1E3B66;
            color: white;
        }

        .btn-outline {
            background: transparent;
            color: #4E5D73;
            border: 2px solid #D9EAF2;
        }

        .btn-outline:hover {
            background: #D9EAF2;
            color: #1E3B66;
        }

        /* Правая колонка - информация */
        .material-info {
            display: flex;
            flex-direction: column;
        }

        .material-category {
            display: inline-block;
            background: #3FC1F9;
            color: white;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 20px;
            width: fit-content;
        }

        .material-title {
            font-size: 36px;
            font-weight: 700;
            color: #1E3B66;
            margin-bottom: 15px;
            line-height: 1.3;
        }

        .material-subtitle {
            font-size: 18px;
            color: #4E5D73;
            margin-bottom: 25px;
            font-style: italic;
        }

        .material-meta {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-bottom: 30px;
            padding: 25px;
            background: #F8F9FA;
            border-radius: 10px;
        }

        .meta-item {
            display: flex;
            flex-direction: column;
        }

        .meta-label {
            font-size: 12px;
            color: #8C8C8C;
            text-transform: uppercase;
            font-weight: 600;
            margin-bottom: 5px;
            letter-spacing: 0.5px;
        }

        .meta-value {
            font-size: 16px;
            color: #1E3B66;
            font-weight: 600;
        }

        .material-description {
            font-size: 16px;
            color: #4E5D73;
            line-height: 1.8;
            margin-bottom: 30px;
            text-align: justify;
        }

        .material-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 30px;
        }

        .material-tag {
            background: #E2EBF4;
            color: #1E3B66;
            padding: 8px 15px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
        }

        /* Табы */
        .tabs {
            margin-top: 30px;
        }

        .tab-buttons {
            display: flex;
            border-bottom: 2px solid #E2EBF4;
            margin-bottom: 25px;
        }

        .tab-button {
            padding: 15px 25px;
            background: none;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: #8C8C8C;
            cursor: pointer;
            transition: all 0.3s ease;
            border-bottom: 3px solid transparent;
        }

        .tab-button.active {
            color: #1E3B66;
            border-bottom-color: #3FC1F9;
        }

        .tab-button:hover {
            color: #3FC1F9;
        }

        .tab-content {
            display: none;
        }

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

        .tab-content h3 {
            font-size: 20px;
            color: #1E3B66;
            margin-bottom: 15px;
        }

        .tab-content p {
            color: #4E5D73;
            line-height: 1.8;
            margin-bottom: 15px;
        }

        /* Дополнительная информация */
        .additional-info {
            background: white;
            border-radius: 15px;
            padding: 40px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            margin-bottom: 40px;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: #1E3B66;
            margin-bottom: 25px;
            text-align: center;
        }

        /* Рекомендации */
        .recommendations {
            background: white;
            border-radius: 15px;
            padding: 40px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
        }

        .recommendations-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
            margin-top: 25px;
        }

        .recommendation-card {
            background: #F8F9FA;
            border-radius: 10px;
            padding: 20px;
            text-align: center;
            transition: transform 0.3s ease;
            cursor: pointer;
        }

        .recommendation-card:hover {
            transform: translateY(-5px);
        }

        .recommendation-image {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 8px;
            margin-bottom: 15px;
        }

        .recommendation-title {
            font-size: 16px;
            font-weight: 600;
            color: #1E3B66;
            margin-bottom: 8px;
        }

        .recommendation-author {
            font-size: 14px;
            color: #4E5D73;
            font-style: italic;
        }

        /* Рейтинг */
        .rating {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 20px;
        }

        .stars {
            display: flex;
            gap: 2px;
        }

        .star {
            font-size: 20px;
            color: #ddd;
        }

        .star.filled {
            color: #FFD700;
        }

        .rating-text {
            font-size: 14px;
            color: #4E5D73;
        }

        /* Отзывы */
        .reviews {
            margin-top: 30px;
        }

        .review {
            background: #F8F9FA;
            border-radius: 10px;
            padding: 20px;
            margin-bottom: 15px;
        }

        .review-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 10px;
        }

        .review-author {
            font-weight: 600;
            color: #1E3B66;
        }

        .review-date {
            font-size: 12px;
            color: #8C8C8C;
        }

        .review-text {
            color: #4E5D73;
            line-height: 1.6;
        }

        /* Статус доступности */
        .availability-status {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 15px;
            border-radius: 10px;
            margin-bottom: 20px;
            font-weight: 600;
        }

        .status-available {
            background: #d4edda;
            color: #155724;
            border: 1px solid #c3e6cb;
        }

        .status-unavailable {
            background: #f8d7da;
            color: #721c24;
            border: 1px solid #f5c6cb;
        }

        .status-icon {
            width: 20px;
            height: 20px;
            border-radius: 50%;
        }

        .icon-available {
            background: #28a745;
        }

        .icon-unavailable {
            background: #dc3545;
        }