/* --- 1. Импорт шрифтов и определение переменных --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Lora:wght@400;700&display=swap');
@import url("../fonts/stylesheet.4a9d90ed17ec.css");
:root {
    --avenir-font: 'Avenir Next Cyr', sans-serif;
    --bg-color: #f8f9fa;
    --card-bg-color: #ffffff;
    --text-color: #212529;
    --accent-color: #212529;
    --subtle-text-color: #6c757d;
    --border-color: #dee2e6;
    
    --header-font: 'Avenir Next Cyr', sans-serif;
    --body-font: 'Avenir Next Cyr', sans-serif;

    --border-radius-md: 12px;
    --border-radius-sm: 8px;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md-hover: 0 5px 15px rgba(0,0,0,0.1);
}

/* --- 2. Глобальные стили --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--body-font);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

/* Логотип всегда виден */
.logo-link img {
    opacity: 1;
    transition: opacity 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

h1, h2, h3, h4 {
    font-family: var(--header-font);
    font-weight: 600;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--subtle-text-color);
}

/* --- 3. Шапка и подвал --- */
.site-header {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 0;
    padding-bottom: 0;
    height: 100px;
}

.site-header img {
    height: 80px;
    width: auto;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.site-header img:hover {
    transform: scale(1.05);
}

.site-title {
    font-family: var(--header-font);
    font-size: 1.5rem;
    font-weight: 500;
}

.site-nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
}

.site-nav a {
    font-size: 1rem;
    font-weight: 500;
    color: var(--subtle-text-color);
}
.site-nav a:hover, .site-nav a.active {
    color: var(--accent-color);
}

.site-footer {
    text-align: center;
    padding: 2.5rem;
    margin-top: 40px;
    font-size: 0.9rem;
    color: var(--subtle-text-color);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.footer-info {
    text-align: left;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.person-social-links {
    margin-bottom: 1rem;
}

.person-social-links h3 {
    margin-bottom: 0.5rem;
}

.social-links-container {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    align-items: center;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: #f8f9fa;
    color: #495057;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 1.2rem;
}

.social-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    text-decoration: none;
}

/* Platform-specific colors */
.social-link.vk:hover { background-color: #4c75a3; color: white; }
.social-link.youtube:hover { background-color: #ff0000; color: white; }
.social-link.telegram:hover { background-color: #0088cc; color: white; }
.social-link.dzen:hover { background-color: #ffcc00; color: black; }
.social-link.other:hover { background-color: #6c757d; color: white; }

.social-link i {
    font-size: 1.1rem;
}

@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        gap: 20px;
    }
    
    .footer-info {
        text-align: center;
    }
}


/* --- 4. Формы (Поиск) --- */
.page-header-search {
    background-color: transparent;
    padding: 3rem 0;
    border-bottom: 1px solid var(--border-color);
}

.search-form {
    display: flex;
    justify-content: center;
    gap: 10px;
    align-items: center;
}

.search-form input[type="search"] {
    width: 100%;
    max-width: 600px;
    padding: 16px 24px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    font-size: 1.1rem;
    font-family: var(--body-font);
    outline: none;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.search-form input[type="search"]:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(33, 37, 41, 0.1);
}

.search-form button[type="submit"] {
    padding: 16px 32px;
    background-color: var(--accent-color);
    color: white;
    border: 1px solid var(--accent-color);
    border-radius: var(--border-radius-md);
    font-size: 1.1rem;
    font-family: var(--body-font);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    min-width: 120px;
}

.search-form button[type="submit"]:hover {
    background-color: var(--subtle-text-color);
    border-color: var(--subtle-text-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md-hover);
}

.search-form button[type="submit"]:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

/* --- 5. Карточки ресурсов --- */
.items-grid, .collections-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.item-card {
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.item-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md-hover);
    border-color: var(--accent-color);
}

.item-card .card-preview {
    height: 220px;
}

.item-card .card-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
}

.item-card .icon-preview {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--header-font);
    font-size: 6rem;
    color: var(--border-color);
}

.item-card .card-body {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.item-card .card-title {
    font-family: var(--header-font);
    font-weight: 500;
    font-size: 1.25rem;
    color: var(--text-color);
    margin-bottom: 10px;
}

.item-card .card-description {
    font-size: 0.95rem !important;
    color: var(--subtle-text-color) !important;
    line-height: 1.5;
    margin-bottom: 15px;
    flex-grow: 1;
}

.item-card .card-type {
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 500;
    color: var(--subtle-text-color);
    margin-top: auto;
}

/* --- 6. Страница ресурса --- */
.resource-page-title {
    font-size: 2.8rem;
    margin-bottom: 40px;
    line-height: 1.2;
}

.resource-grid {
    display: grid;
    grid-template-columns: 300px 1fr; /* Левая колонка фиксированной ширины */
    gap: 50px;
    align-items: start;
}

.resource-meta {
    position: sticky;
    top: 120px; /* (Высота шапки + отступ) */
}

.resource-meta h3 {
    font-size: 1.4rem;
    font-family: var(--header-font);
    font-weight: 500;
    color: var(--text-color);
    margin-bottom: 15px;
    padding-left: 0px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.meta-item {
    margin-bottom: 20px;
    text-align: justify;
}

.meta-item strong {
    display: block;
    color: var(--subtle-text-color);
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 5px;
    text-transform: uppercase;
}

.meta-item span, .meta-item a {
    font-size: 1rem;
    font-weight: 500;
}

.meta-item ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.meta-item li a {
    background-color: var(--bg-color);
    padding: 5px 12px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    font-size: 0.9rem;
}
.meta-item li a:hover {
    border-color: var(--accent-color);
    background-color: var(--accent-color);
    color: white;
}

.resource-content .content-image {
    order: 1;
    width: 100%;
    height: auto;
    max-width: 100%;
    display: block;
    margin-bottom: 30px;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
}

.resource-content .content-embed {
    order: 1;
    width: 100%;
    height: 600px;
    max-width: 100%;
    display: block;
    margin-bottom: 30px;
}

/*.resource-description-right {
     padding: 30px; 
}
*/
.resource-description-right h3 {
    font-size: 1.4rem;
    font-family: var(--header-font);
    font-weight: 500;
    color: var(--text-color);
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.resource-description-right .description-content {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-color);
}

.resource-description-right .description-content p {
    margin-bottom: 20px;
}

.resource-meta .resource-description {
    display: none;
}

/* --- 8. Кнопки --- */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
    font-family: var(--body-font);
}

.btn-outline-primary {
    color: var(--accent-color);
    border-color: var(--accent-color);
    background-color: transparent;
}

.btn-outline-primary:hover {
    background-color: var(--accent-color);
    color: white;
}

/* --- 9. Формы --- */
.filter-container {
    background-color: var(--card-bg-color);
    padding: 30px;
    border-radius: var(--border-radius-md);
    margin-bottom: 40px;
    border: 1px solid var(--border-color);
}
.filter-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    align-items: end;
}
.filter-form label {
    display: block;
    font-weight: 500;
    margin-bottom: 5px;
    font-size: 0.9rem;
}
.filter-form select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    height: 50px;
    font-size: 1rem;
    background-color: #fff;
}

select:focus, input[type="text"]:focus, input[type="search"]:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(33, 37, 41, 0.1);
}

/* --- 11. Навигация по страницам (Пагинация) --- */
.pagination-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 60px;
    text-align: center;
}
.pagination-nav .pagination-link {
    display: inline-block;
    margin: 0 5px;
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    transition: all 0.3s ease;
    color: var(--text-color);
}
.pagination-nav .pagination-link:hover {
    border-color: var(--accent-color);
    background-color: var(--accent-color);
    color: white;
}
.pagination-nav .pagination-info {
    margin: 0 10px;
    font-weight: 500;
    color: var(--text-color);
}

/* --- 12. Кнопки фильтров --- */
.filter-buttons {
    display: flex;
    align-items: end;
    gap: 10px;
}

.filter-buttons .btn-apply, .filter-buttons .btn-reset {
    padding: 10px 20px;
    background-color: var(--accent-color);
    color: white;
    border: 1px solid var(--accent-color);
    border-radius: var(--border-radius-sm);
    font-size: 0.95rem;
    font-family: var(--body-font);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    min-width: 50px;
    width: 50%;
    height: 50px;
}
.filter-buttons .btn-apply:hover {
    background-color: var(--subtle-text-color);
    border-color: var(--subtle-text-color);
}
.filter-buttons .btn-reset {
    background-color: var(--bg-color);
    color: var(--text-color);
}
.filter-buttons .btn-reset:hover {
    background-color: var(--subtle-text-color);
    border-color: var(--subtle-text-color);
    color: white;
}

/* --- 13. Стили для блога --- */
.blog-posts-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}
.blog-post-card {
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    display: flex;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    min-height: 220px;
}
.blog-post-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md-hover);
    border-color: var(--accent-color);
}
.blog-post-image {
    width: 280px;
    min-width: 280px;
    height: auto;
    overflow: hidden;
}
.blog-post-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}
.blog-post-card:hover .blog-post-image img {
    transform: scale(1.05);
}
.blog-post-content-wrapper {
    display: flex;
    flex: 1;
    padding: 25px;
    gap: 30px;
}
/* CKEditor content styles */
.blog-post-content {
    line-height: 1.6;
}

/* Image alignment styles from CKEditor */
.blog-post-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius-sm);
    margin: 1em 0;
}

/* CKEditor image alignment classes */
.blog-post-content .image-style-align-left {
    float: left;
    margin: 0 1em 1em 0;
}

.blog-post-content .image-style-align-right {
    float: right;
    margin: 0 0 1em 1em;
}

.blog-post-content .image-style-align-center {
    display: block;
    margin: 1em auto;
    text-align: center;
}

.blog-post-content .image-style-side {
    float: right;
    margin: 0 0 1em 1em;
    max-width: 50%;
}

/* Alternative center alignment (if CKEditor uses different classes) */
.blog-post-content .image-center,
.blog-post-content .align-center,
.blog-post-content [style*="text-align: center"] {
    display: block;
    margin: 1em auto;
    text-align: center;
}

.blog-post-content [style*="text-align: center"] img {
    display: block;
    margin: 0 auto;
}

/* Clear floats after images */
.blog-post-content::after {
    content: "";
    display: table;
    clear: both;
}

/* Other CKEditor content styles */
.blog-post-content h1,
.blog-post-content h2,
.blog-post-content h3 {
    margin: 1.5em 0 0.5em 0;
    font-family: var(--header-font);
    clear: both;
}

.blog-post-content p {
    margin-bottom: 1em;
}

.blog-post-content ul,
.blog-post-content ol {
    margin: 1em 0;
    padding-left: 2em;
}

.blog-post-content blockquote {
    border-left: 4px solid var(--accent-color);
    padding-left: 1em;
    margin: 1em 0;
    font-style: italic;
}

.blog-post-content table {
    border-collapse: collapse;
    width: 100%;
    margin: 1em 0;
}

.blog-post-content table th,
.blog-post-content table td {
    border: 1px solid var(--border-color);
    padding: 0.5em;
}

.blog-post-content code {
    background: var(--bg-color);
    padding: 0.2em 0.4em;
    border-radius: 3px;
    font-family: monospace;
}

.blog-post-content pre {
    background: var(--bg-color);
    padding: 1em;
    border-radius: var(--border-radius-sm);
    overflow-x: auto;
}


.blog-post-left, .blog-post-right {
    flex: 1;
    display: flex;
    flex-direction: column;
}
.blog-post-title {
    font-family: var(--header-font);
    font-size: 1.4rem;
    font-weight: 500;
    line-height: 1.3;
    margin-bottom: 15px;
    margin-top: 0px !important;
}
.blog-post-title a {
    color: var(--text-color);
}
.blog-post-title a:hover {
    color: var(--accent-color);
}
.blog-post-meta {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: auto;
}
.blog-post-author, .blog-post-date, .blog-post-reading-time {
    color: var(--subtle-text-color);
    font-size: 0.9rem;
}
.blog-post-excerpt {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-color);
    margin-bottom: 15px;
    flex-grow: 1;
}
.blog-post-tags {
    margin-top: auto;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}
.blog-post-tag {
    display: inline-block;
    padding: 4px 8px;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    color: var(--subtle-text-color);
}
.blog-post-tag:hover {
    border-color: var(--accent-color);
    background-color: var(--accent-color);
    color: white;
}
.blog-pagination {
    margin-top: 60px;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

/* --- 14. Улучшения для чтения контента --- */
.description-content {
    font-size: 1.1rem;
    line-height: 1.8;
}
.description-content h1, .description-content h2, .description-content h3 {
    margin-top: 30px;
    margin-bottom: 15px;
}
.description-content blockquote {
    border-left: 4px solid var(--accent-color);
    padding-left: 20px;
    margin: 20px 0;
    font-style: italic;
    color: var(--subtle-text-color);
}
.description-content ul, .description-content ol {
    margin: 15px 0;
    padding-left: 30px;
}

/* --- 7. Адаптивность (Общие правила) --- */
@media (max-width: 992px) {
    .resource-grid {
        grid-template-columns: 1fr;
        /* Добавляем явное определение областей сетки */
        grid-template-areas: 
            "content"
            "meta";
    }
    
    .resource-content {
        grid-area: content; /* Сначала контент */
        order: 1; /* Явное указание порядка */
    }
    .resource-content .h2{
        font-size: 1.6rem;
    }
    
    .resource-meta {
        grid-area: meta; /* Затем метаданные */
        order: 2; /* Явное указание порядка */
        position: static;
        margin-bottom: 40px;
    }

    .site-header img {
        height: 50px;
        width: auto;
        object-fit: contain;
        transition: transform 0.3s ease;
    }

    .site-header .container {
        height: 50px;
    }

    #search-button {
        display: none;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 30px 15px;
    }
    h1, .resource-page-title {
        font-size: 2.2rem;
    }
    h2 {
        font-size: 1.8rem;
    }
    .site-header .container {
        flex-direction: row;
        justify-content: space-between;
    }
    .site-nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px 20px;
    }
    .search-form {
        flex-direction: column;
        gap: 15px;
    }
    .search-form input[type="search"] {
        max-width: 100%;
        text-align: center;
    }
    .search-form button[type="submit"] {
        width: 100%;
        max-width: 250px;
    }
    .filter-form {
        grid-template-columns: 1fr;
    }
    .filter-buttons {
        flex-direction: column;
        width: 100%;
    }
    .filter-buttons .btn-apply, .filter-buttons .btn-reset {
        width: 100%;
    }
    .items-grid, .collections-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 20px;
    }
    .blog-post-card {
        flex-direction: column;
    }
    .blog-post-image {
        width: 100%;
        min-width: 100%;
        height: 220px;
    }
    .blog-post-content-wrapper {
        flex-direction: column;
        gap: 15px;
        padding: 20px;
    }
    #search-button {
        display: none;
    }
}

@media (max-width: 480px) {
    h1, .resource-page-title {
        font-size: 1.8rem;
    }
    h2 {
        font-size: 1.5rem;
    }
    .items-grid, .collections-grid {
        grid-template-columns: 1fr;
    }
    .pagination-nav {
        gap: 5px;
    }
    .pagination-nav .pagination-link {
        padding: 8px 12px;
        font-size: 0.9rem;
    }
    .pagination-nav .pagination-info {
        width: 100%;
        margin: 5px 0;
        order: -1;
    }
    .blog-pagination .pagination-info {
        order: -1;
        width: 100%;
    }
    #search-button {
        display: none;
    }
}

/* --- 18. Стили для мобильного меню --- */

.menu-toggle {
    display: block; /* Скрываем кнопку на десктопе */
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001; /* Поверх других элементов */
    order: 3; /* Размещаем после навигации в flex-контейнере */
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.hamburger-bar {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger-bar + .hamburger-bar {
    margin-top: 5px;
}

/* Анимация иконки в "крестик" при открытии */
.menu-toggle[aria-expanded="true"] .hamburger-bar:nth-of-type(1) {
    transform: translateY(8px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .hamburger-bar:nth-of-type(2) {
    opacity: 0;
}

.menu-toggle[aria-expanded="true"] .hamburger-bar:nth-of-type(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* --- 19. Стили для скрытого поиска --- */

.header-actions {
    display: flex;
    align-items: center;
    gap: 5px;
    order: 2;
}

.search-toggle {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 10px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    order: 2;
}

.search-icon {
    display: block;
    width: 22px;
    height: 22px;
    border: 3px solid var(--text-color);
    border-radius: 50%;
    position: relative;
    transition: all 0.3s ease;
}

.search-icon::after {
    content: '';
    position: absolute;
    width: 10px;
    height: 3px;
    background: var(--text-color);
    bottom: -6px;
    right: -3px;
    transform: rotate(45deg);
    transition: all 0.3s ease;
}

/* Меняем иконку на крестик, когда поиск открыт */
.search-toggle[aria-expanded="true"] .search-icon {
    transform: rotate(45deg);
    border: none;
}

.search-toggle[aria-expanded="true"] .search-icon::before,
.search-toggle[aria-expanded="true"] .search-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--text-color);
    transform: translateY(-50%) rotate(0deg);
}
.search-toggle[aria-expanded="true"] .search-icon::after {
    transform: translateY(-50%) rotate(-90deg);
}

/* Скрываем контейнер поиска по умолчанию */
.page-header-search {
    overflow: hidden;
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    border-bottom: none;
    transition: max-height 0.4s ease-out, padding 0.4s ease-out, border-color 0.4s ease-out;
}

/* Класс для отображения контейнера */
.page-header-search.is-open {
    max-height: 300px; /* Достаточная высота для формы */
    padding-top: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--border-color);
    transition: max-height 0.4s ease-in, padding 0.4s ease-in, border-color 0.4s ease-in;
}

@media (max-width: 768px) {
    .header-actions {
        order: 2; /* Ставим кнопки перед меню-гамбургером */
    }
    .site-nav {
        order: 3;
    }
}

/* --- Стили для горизонтального блока с постами --- */
.latest-blog-posts-section {
    border-bottom: 0px solid var(--border-color);
    background-color: var(--bg-color);
    padding: 0; /* Убираем отступы секции */
}

.latest-blog-posts-section .container {
    max-width: 1200px; /* Такая же ширина как у основного контейнера */
    margin: 0 auto;
    padding: 40px 20px; /* Добавляем отступы в контейнер */
}

.blog-posts-horizontal-scroll {
    position: relative;
    margin-top: 30px;
    width: 100%; /* Занимаем всю ширину контейнера */
}

.blog-posts-scroll-container {
    display: flex;
    gap: 20px;
    padding-bottom: 20px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
    width: 100%; /* Занимаем всю ширину */
}

.blog-post-card-horizontal {
    flex: 0 0 280px;
    scroll-snap-align: start;
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.blog-post-card-horizontal:hover {
    box-shadow: var(--shadow-md-hover);
    border-color: var(--accent-color);
}

.blog-post-card-horizontal:hover .blog-post-image-horizontal img {
    transform: scale(1.05);
}

.blog-post-content-horizontal {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.blog-post-title-horizontal {
    font-family: var(--header-font);
    font-size: 1.1rem;
    font-weight: 500;
    line-height: 1.3;
    margin-bottom: 10px;
    color: var(--text-color);
    flex-grow: 1;
}

.blog-post-meta-horizontal {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--subtle-text-color);
    margin-top: 15px;
}

/* Анимация бесконечной прокрутки */
@keyframes scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

/* Адаптивность */
@media (max-width: 768px) {
    .blog-post-card-horizontal {
        flex: 0 0 240px;
    }
    
    .blog-post-image-horizontal {
        height: 140px;
    }
    
    .blog-post-title-horizontal {
        font-size: 1rem;
    }
}

/* Стили для дополнительных файлов */
.additional-files {
    margin-top: 30px;
    margin-bottom: 30px;
}

.files-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.file-item {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 15px;
    text-align: center;
    background-color: var(--card-bg-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.file-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md-hover);
}

.file-preview {
    margin-bottom: 10px;
}

.additional-image {
    width: 100%;
    height: 120px;
    object-fit: cover;
    border-radius: var(--border-radius-sm);
}

.pdf-preview,
.file-preview-generic {
    height: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-color);
    border-radius: var(--border-radius-sm);
    color: var(--subtle-text-color);
}

.pdf-preview i,
.file-preview-generic i {
    font-size: 2rem;
    margin-bottom: 5px;
}

.file-description {
    font-size: 0.9rem;
    color: var(--text-color);
    margin-bottom: 10px;
    min-height: 20px;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 0.875rem;
}

.btn-outline-primary {
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    background-color: transparent;
}

.btn-outline-primary:hover {
    background-color: var(--accent-color);
    color: white;
}


/* --- Стили для карусели файлов --- */
.files-carousel-container {
    position: relative;

}

.files-carousel-container h3 {
    font-size: 1.4rem;
    font-family: var(--header-font);
    font-weight: 500;
    color: var(--text-color);
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

/* Навигация по файлам */
.files-navigation {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
    padding: 15px;
    background-color: var(--bg-color);
    align-items: center;
    justify-content: center;
}

.file-nav-btn {
    padding: 8px 16px;
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-color);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.file-nav-btn:hover {
    background-color: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

.file-nav-btn.active {
    background-color: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

/* Контейнер для отображения файлов */
.files-display-container {
    position: relative;
    width: 100%;
    height: 500px; /* Фиксированная высота */
    border: 0px solid var(--border-color);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.file-display-item {
    display: none;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}

.file-display-item.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.file-preview-large {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    box-sizing: border-box;
}

/* Стили для изображений и PDF */
.file-preview-large .content-image {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;

}

.file-preview-large .content-embed {
    width: 100%;
    height: 100%;
    border: none;

}

/* Контейнер для скачивания файлов */
.file-download-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px;
    width: 100%;
    height: 100%;
    box-sizing: border-box;
}

.file-icon-large {
    font-size: 4rem;
    color: var(--subtle-text-color);
    margin-bottom: 20px;
}

.file-icon-large i {
    display: block;
}

.file-download-container h4 {
    font-family: var(--header-font);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-color);
    margin-bottom: 10px;
    max-width: 400px;
    word-wrap: break-word;
}

.file-download-container .file-type {
    font-size: 1rem;
    color: var(--subtle-text-color);
    margin-bottom: 25px;
    text-transform: uppercase;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background-color: var(--accent-color);
    color: white;
    border: 1px solid var(--accent-color);
    border-radius: var(--border-radius-sm);
    font-size: 1.1rem;
    font-family: var(--body-font);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 160px;
    justify-content: center;
}

.btn-download:hover {
    background-color: var(--subtle-text-color);
    border-color: var(--subtle-text-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md-hover);
}

.btn-download:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-download i {
    font-size: 1rem;
}

/* Стрелки навигации */
.file-nav-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background-color: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10;
    backdrop-filter: blur(5px);
}

.file-nav-arrow:hover:not(:disabled) {
    background-color: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
    transform: translateY(-50%) scale(1.1);
}

.file-nav-arrow:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.file-nav-prev {
    left: 15px;
}

.file-nav-next {
    right: 15px;
}

.file-nav-arrow i {
    font-size: 1.2rem;
}

/* Индикатор количества файлов */
.files-counter {
    position: absolute;
    top: 15px;
    right: 15px;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 5px 10px;
    border-radius: var(--border-radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    z-index: 10;
}

#logo-mobile{
    display: none;
}

#mobile-download {
    display: none;
}

/* Адаптивность для файлов */
@media (max-width: 992px) {
    .files-display-container {
        height: 400px; /* Уменьшенная высота для планшетов */
    }
    
    .file-preview-large .content-embed {
        height: 100%;
    }
    
    .file-download-container {
        padding: 30px 20px;
    }
    
    .file-icon-large {
        font-size: 3rem;
        margin-bottom: 15px;
    }
    
    .file-download-container h4 {
        font-size: 1.3rem;
    }
    .file-nav-arrow {
        display: none;
    }

    #logo-desktop {
        display: none;
    }

    #logo-mobile{
        display: block;
        height: 50px;
        width: auto;
        object-fit: contain;
        transition: transform 0.3s ease;
    }

    .logo-mobile:hover {
        transform: scale(1.05);
    }

    .author-image { 
        order: 0;
    }

    #desktop-preview {
        display: none;
    }

    #mobile-download {
        display: block;
    }
    
}

@media (max-width: 768px) {
    .files-display-container {
        height: 350px; /* Еще меньше для мобильных */
    }
    
    .file-preview-large {
        padding: 15px;
    }
    
    .file-download-container {
        padding: 20px 15px;
    }
    
    .file-icon-large {
        font-size: 2.5rem;
        margin-bottom: 10px;
    }
    
    .file-download-container h4 {
        font-size: 1.2rem;
        margin-bottom: 8px;
    }
    
    .btn-download {
        padding: 10px 20px;
        font-size: 1rem;
        min-width: 140px;
    }
    .file-nav-arrow {
        display: none;
    }
}

@media (max-width: 480px) {
    .files-display-container {
        height: 300px; /* Минимальная высота для очень маленьких экранов */
    }
    
    .file-preview-large {
        padding: 10px;
    }
    
    .file-download-container {
        padding: 15px 10px;
    }
    
    .file-icon-large {
        font-size: 2rem;
    }
    
    .file-download-container h4 {
        font-size: 1.1rem;
    }
    
    .btn-download {
        padding: 8px 16px;
        font-size: 0.9rem;
        min-width: 120px;
    }
    .file-nav-arrow {
        display: none;
    }
}

/* Анимации для смены файлов */
.file-display-item {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.file-display-item.active {
    opacity: 1;
}

/* Улучшение для кнопок навигации */
.files-navigation::-webkit-scrollbar {
    height: 4px;
}

.files-navigation::-webkit-scrollbar-track {
    background: var(--bg-color);
}

.files-navigation::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 2px;
}

.files-navigation::-webkit-scrollbar-thumb:hover {
    background: var(--subtle-text-color);
}

/* Стили для разных типов файлов */
.file-icon-large .fa-file-word {
    color: #2b579a;
}

.file-icon-large .fa-file-excel {
    color: #217346;
}

.file-icon-large .fa-file-pdf {
    color: #dc3545;
}

.file-icon-large .fa-file-alt {
    color: var(--subtle-text-color);
}

/* Hover эффекты для файлов */
.file-download-container:hover .file-icon-large {
    transform: scale(1.1);
    transition: transform 0.3s ease;
}

.file-download-container:hover .file-icon-large i {
    color: var(--accent-color);
}

.language-btn {
    background: transparent;
    border: 0px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    margin-right: 20px;
    cursor: pointer;
    display:flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 10px !important;
    object-fit: cover;
}

.flag-icon {
    width: 200% !important;
    transition: none !important;
    transform: none !important;
}

.author-image { 
    width: 100%;
    height: auto;
    max-width: 100%;
    display: block;
    margin-bottom: 30px;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
}

/* ПОИСК */
.search-section {
    margin-bottom: 50px;
}

.search-section h2 {
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--accent-color);
}

.view-all-link {
    display: inline-block;
    margin-top: 20px;
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
}

.view-all-link:hover {
    text-decoration: underline;
}

.no-results {
    text-align: center;
    padding: 60px 20px;
    color: var(--subtle-text-color);
}

.blog-posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.blog-post-card {
    background: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    text-decoration: none;
    transition: all 0.3s ease;
}

.blog-post-card:hover {
    box-shadow: var(--shadow-md-hover);
    border-color: var(--accent-color);
}

.blog-card-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.blog-card-content {
    padding: 20px;
}

.blog-card-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-color);
}

.blog-card-excerpt {
    color: var(--subtle-text-color);
    margin-bottom: 15px;
    line-height: 1.5;
}

.blog-card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    color: var(--subtle-text-color);
}

/* --- Десктопное меню --- */
.site-nav {
    display: block;
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 0;
}

.site-nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
}

.menu-toggle {
    display: none;
}

/* Dropdown стили для десктопа */
.dropdown {
    position: relative;
    align-items: center;
}

.dropdown-arrow {
    font-size: 0.8rem;
    margin-left: 5px;
    transition: transform 0.3s ease;
}

/* --- Десктопное меню --- */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-md-hover);
    min-width: 180px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
    list-style: none;
    padding: 10px 0;
    margin: 5px 0 0 0;
    display: block !important;
    flex-direction: column;
}

.dropdown-menu li {
    margin: 0;
    width: 100%;
    display: block !important;
}

.dropdown-menu a {
    display: block;
    padding: 8px 20px;
    color: var(--text-color);
    text-decoration: none;
    transition: background-color 0.2s ease;
    width: 100%;
}


.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* --- Мобильное меню --- */
@media (max-width: 768px) {
    /* Возвращаем шапку в одну строку для логотипа и кнопки */
    .site-header .container {
        flex-direction: row;
        justify-content: space-between;
    }

    .site-nav a {
        font-size: 1.2rem;
    }
    
    .site-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        border-top: 1px solid var(--border-color);
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        padding: 30px 20px;
        z-index: 1000;
    }
    
    .site-nav.is-open {
        display: block;
    }
    
    .site-nav ul {
        flex-direction: column;
        align-items: center;
        gap: 25px;
    }
    
    .menu-toggle {
        display: block;
    }
    
    /* Mobile dropdown - hide by default */
    .dropdown-menu {
        display: none !important;
        position: static;
        background: transparent;
        border: none;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        padding: 10px 0 0 0;
        margin: 0;
        text-align: center;
    }
    
    /* Show dropdown when parent is clicked/active */
    .dropdown.mobile-active .dropdown-menu {
        display: block !important;
    }
    
    .dropdown-arrow {
        display: inline-block;
        margin-left: 5px;
        transition: transform 0.3s ease;
    }
    
    /* Rotate arrow when dropdown is open */
    .dropdown.mobile-active .dropdown-arrow {
        transform: rotate(180deg);
    }
    
    .dropdown-menu a {
        font-size: 1.1rem;
        color: var(--subtle-text-color);
        text-align: center;
        padding: 8px 0;
    }
    
    /* Make main dropdown links clickable to toggle submenu */
    .dropdown > a {
        cursor: pointer;
        text-align: center;
        display: block;
        width: 100%;
    }
}

/* --- Стили для главного слайдера --- */
.hero-slider-section {
    background-color: var(--bg-color);
    padding: 0;
    margin-bottom: 60px;
}

.hero-slider-section .container {
    padding: 60px 20px;
}

.hero-slider {
    position: relative;
    width: 100%;
    height: 400px;
    overflow: hidden;
    border-radius: var(--border-radius-md);
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
}

.slider-track {
    display: flex;
    width: 400%;
    height: 100%;
    transition: transform 0.5s ease-in-out;
}

.slider-item {
    width: 25%;
    height: 100%;
    flex-shrink: 0;
}

.slider-content {
    display: flex;
    height: 100%;
    align-items: center;
}

.slider-image {
    width: 50%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.slider-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.slider-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-color);
    color: var(--border-color);
    font-size: 4rem;
}

.slider-text {
    width: 50%;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.slider-category {
    font-size: 0.9rem;
    color: var(--subtle-text-color);
    text-transform: uppercase;
    font-weight: 500;
    margin-bottom: 10px;
    letter-spacing: 0.5px;
}

.slider-title {
    font-family: var(--header-font);
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 15px;
    line-height: 1.2;
}

.slider-description {
    font-size: 1.1rem;
    color: var(--text-color);
    line-height: 1.6;
    margin-bottom: 25px;
}

.slider-btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: var(--accent-color);
    color: white;
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    transition: all 0.3s ease;
    align-self: flex-start;
}

.slider-btn:hover {
    background-color: var(--subtle-text-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md-hover);
}

.slider-indicators {
    position: absolute;
    bottom: 20px;
    left: 90%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 1px solid var(--accent-color);
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator.active {
    background-color: var(--accent-color);
    transform: scale(1.2);
}

/* --- Стили для шахматного списка ресурсов --- */
.chess-resources-section {
    margin-top: 60px;
}

.chess-resources-section h3 {
    font-size: 2rem;
    font-family: var(--header-font);
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 40px;
    text-align: center;
}

.chess-grid {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.chess-item {
    width: 100%;
}

.chess-content {
    display: flex;
    align-items: center;
    background-color: var(--card-bg-color);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    min-height: 250px;
}

.chess-content:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md-hover);
}

.chess-item.left .chess-content {
    flex-direction: row;
}

.chess-item.right .chess-content {
    flex-direction: row-reverse;
}

.chess-image {
    width: 40%;
    height: 350px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chess-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
}

.chess-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-color);
    color: var(--border-color);
    font-size: 3rem;
    font-family: var(--header-font);
    font-weight: 600;
}

.chess-text {
    width: 60%;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.chess-type {
    font-size: 0.8rem;
    color: var(--subtle-text-color);
    text-transform: uppercase;
    font-weight: 500;
    margin-bottom: 10px;
    letter-spacing: 0.5px;
}

.chess-title {
    font-family: var(--header-font);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 15px;
    line-height: 1.3;
}

.chess-description {
    font-size: 1rem;
    color: var(--text-color);
    line-height: 1.6;
    margin-bottom: 20px;
}

.chess-btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: transparent;
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    transition: all 0.3s ease;
    align-self: flex-start;
}

.chess-btn:hover {
    background-color: var(--accent-color);
    color: white;
}

.no-resources {
    text-align: center;
    color: var(--subtle-text-color);
    font-size: 1.1rem;
    padding: 60px 20px;
}

/* --- Адаптивность для слайдера --- */
@media (max-width: 992px) {
    .hero-slider {
        height: 380px !important;
    }
    
    .slider-title {
        font-size: 1.6rem;
    }
    
    .slider-description {
        font-size: 1rem;
    }
    
    .slider-text {
        padding: 30px;
    }

    .site-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        border-top: 1px solid var(--border-color);
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        padding: 30px 20px;
    }
    
    .site-nav.is-open {
        display: block;
    }
    
    .site-nav ul {
        flex-direction: column;
        align-items: center;
        gap: 25px;
    }
    
    .menu-toggle {
        display: block;
    }
}

@media (max-width: 768px) {
    .hero-slider {
        height: 300px;
    }
    
    .slider-content {
        flex-direction: column;
    }
    
    .slider-image,
    .slider-text {
        width: 100%;
    }
    
    .slider-image {
        height: 50%;
    }
    
    .slider-text {
        height: 50%;
        padding: 20px;
        justify-content: flex-start;
    }
    
    .slider-title {
        font-size: 1.4rem;
        margin-bottom: 10px;
    }
    
    .slider-description {
        font-size: 0.9rem;
        margin-bottom: 15px;
    }
    
    .slider-placeholder {
        font-size: 2.5rem;
    }
}

/* --- Адаптивность для шахматного списка --- */
@media (max-width: 992px) {
    .chess-content {
        min-height: 220px;
    }
    
    .chess-image {
        height: 220px;
    }
    
    .chess-title {
        font-size: 1.3rem;
    }
    
    .chess-text {
        padding: 30px;
    }
}

@media (max-width: 768px) {
    .chess-item.left .chess-content,
    .chess-item.right .chess-content {
        flex-direction: column;
    }

    .slider-description {
        display: none;
    }
    
    /* Show slider button on mobile (override the existing display: none) */
    .slider-btn {
        display: inline-block !important;
    }
    
    /* Adjust slider text padding to better accommodate the button */
    .slider-text {
        padding: 15px;
        justify-content: center;
    }

    .slider-category {
        display: none;
    }
    
    /* Ensure button has proper spacing */
    .slider-btn {
        margin-top: 10px;
    }

    .slider-indicators {
        left: 85%;
    }
    
    .chess-image,
    .chess-text {
        width: 100%;
    }
    
    .chess-image {
        height: 200px;
    }
    
    .chess-text {
        padding: 25px;
    }
    
    .chess-title {
        font-size: 1.2rem;
    }
    
    .chess-description {
        font-size: 0.95rem;
    }
    
    .chess-placeholder {
        font-size: 2rem;
    }

    .home-page {
        display: none !important;
    }
}

@media (max-width: 480px) {
    .hero-slider-section .container {
        padding: 40px 15px;
    }
    
    .chess-resources-section h3 {
        font-size: 1.6rem;
    }
    
    .chess-grid {
        gap: 30px;
    }
    
    .chess-image {
        height: 180px;
    }
    
    .chess-text {
        padding: 20px;
    }
    
    .chess-title {
        font-size: 1.1rem;
    }
}

/* --- Стили для модального окна просмотра изображений --- */
.image-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(5px);
}

.image-modal-content {
    position: relative;
    margin: auto;
    padding: 20px;
    width: 90%;
    max-width: 1200px;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.image-modal-img {
    max-width: 100%;
    max-height: 80%;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md-hover);
}

.image-modal-close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: white;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    z-index: 2001;
    transition: color 0.3s ease;
}

.image-modal-close:hover {
    color: var(--accent-color);
}

.image-modal-caption {
    color: white;
    text-align: center;
    padding: 20px;
    font-size: 1.1rem;
    font-family: var(--body-font);
    max-width: 80%;
}

.file-preview-large .content-image {
    cursor: pointer;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.file-preview-large .content-image:hover {
    transform: scale(1.02);
    opacity: 0.9;
}

@media (max-width: 768px) {
    .image-modal-content {
        padding: 10px;
        width: 95%;
    }
    
    .image-modal-img {
        max-height: 70%;
    }
    
    .image-modal-close {
        top: 10px;
        right: 15px;
        font-size: 30px;
    }
    
    .image-modal-caption {
        font-size: 1rem;
        padding: 15px;
        max-width: 90%;
    }
}

.filter-select-btn {
    height: 50px !important;
}
.filter-select-textfield {
    width: 100%;
    padding: 12px;
    height: 50px !important;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 1.1rem;
    font-family: var(--body-font);
    outline: none;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.filter-select-textfield:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(33, 37, 41, 0.1);
}

/* Стили для кастомных селектов */
.filter-select-wrapper {
    position: relative;
    width: 100%;
}

.filter-select-btn {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--card-bg-color);
    color: var(--text-color);
    font-size: 1rem;
    font-family: var(--body-font);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.3s ease;
    height: 50px;
}

.filter-select-btn:hover {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(33, 37, 41, 0.1);
}

.filter-select-btn:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(33, 37, 41, 0.1);
}

.filter-select-btn.active {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(33, 37, 41, 0.1);
}

.filter-select-btn .selected-text {
    flex: 1;
    text-align: left;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.filter-select-btn i {
    color: var(--subtle-text-color);
    transition: transform 0.3s ease;
    margin-left: 10px;
}

.filter-select-btn.active i {
    transform: rotate(180deg);
}

/* Модальное окно фильтров */
.filter-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.filter-modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
}

.filter-modal-content {
    background: var(--card-bg-color);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md-hover);
    width: 90%;
    max-width: 1000px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    transform: scale(0.9);
    transition: transform 0.3s ease;
    border: 1px solid var(--border-color);
}

.filter-modal.show .filter-modal-content {
    transform: scale(1);
}

/* Заголовок модального окна */
.filter-modal-header {
    padding: 20px 25px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-color);
    border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
}

.filter-modal-header h3 {
    font-family: var(--header-font);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-color);
    margin: 0;
}

.filter-modal-close {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--subtle-text-color);
    cursor: pointer;
    padding: 5px;
    border-radius: var(--border-radius-sm);
    transition: all 0.3s ease;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.filter-modal-close:hover {
    background: var(--bg-color);
    color: var(--text-color);
}

/* Тело модального окна */
.filter-modal-body {
    padding: 20px 25px;
    flex: 1;
    overflow-y: auto;
    max-height: 400px;
}

/* Поиск в фильтрах */
.filter-search-wrapper {
    position: relative;
    margin-bottom: 20px;
}

.filter-search-input {
    width: 100%;
    padding: 12px 40px 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    font-family: var(--body-font);
    background: var(--bg-color);
    color: var(--text-color);
    transition: all 0.3s ease;
}

.filter-search-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(33, 37, 41, 0.1);
}

.filter-search-icon {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--subtle-text-color);
    font-size: 0.9rem;
}

/* Опции фильтров */
.filter-options {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.filter-option {
    padding: 12px 16px;
    border: 1px solid transparent;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: transparent;
    color: var(--text-color);
    font-size: 1rem;
    font-family: var(--body-font);
}

.filter-option:hover {
    background: var(--bg-color);
    border-color: var(--border-color);
}

.filter-option.selected {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

.filter-option.selected:hover {
    background: var(--subtle-text-color);
    border-color: var(--subtle-text-color);
}

.filter-option-text {
    flex: 1;
    text-align: left;
    z-index: 1;
}

.filter-option-check {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-color);
    border-radius: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.filter-option:hover .filter-option-check {
    border-color: var(--accent-color);
}

.filter-option.selected .filter-option-check {
    background: white;
    border-color: white;
}

.filter-option-check i {
    font-size: 0.8rem;
    color: var(--accent-color);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.filter-option.selected .filter-option-check i {
    opacity: 1;
    color: var(--accent-color);
}

/* Подвал модального окна */
.filter-modal-footer {
    padding: 20px 25px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    background: var(--bg-color);
    border-radius: 0 0 var(--border-radius-md) var(--border-radius-md);
}

.filter-modal-footer .btn-reset,
.filter-modal-footer .btn-apply {
    padding: 10px 20px;
    background-color: var(--accent-color);
    color: white;
    border: 1px solid var(--accent-color);
    border-radius: var(--border-radius-sm);
    font-size: 0.95rem;
    font-family: var(--body-font);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    min-width: 130px;
    height: 50px;
}

/* Состояние "нет результатов" */
.filter-no-results {
    text-align: center;
    padding: 40px 20px;
    color: var(--subtle-text-color);
}

.filter-no-results i {
    font-size: 2rem;
    margin-bottom: 15px;
    opacity: 0.5;
}

.filter-no-results p {
    font-size: 1rem;
    margin: 0;
}

/* Адаптивность модального окна */
@media (max-width: 768px) {
    .filter-modal-content {
        width: 95%;
        max-height: 90vh;
        margin: 20px;
    }
    
    .filter-modal-header,
    .filter-modal-body,
    .filter-modal-footer {
        padding: 15px 20px;
    }
    
    .filter-modal-header h3 {
        font-size: 1.2rem;
    }
    
    .filter-modal-footer {
        flex-direction: column;
    }
    
    .filter-modal-footer .btn-reset,
    .filter-modal-footer .btn-apply {
        width: 100%;
    }
    
    .filter-options {
        gap: 1px;
    }
    
    .filter-option {
        padding: 15px 16px;
    }
}

@media (max-width: 480px) {
    .filter-modal-content {
        width: 100%;
        height: 100%;
        max-height: 100vh;
        border-radius: 0;
        margin: 0;
    }
    
    .filter-modal-header {
        border-radius: 0;
    }
    
    .filter-modal-footer {
        border-radius: 0;
    }
    
    .filter-modal-body {
        max-height: calc(100vh - 140px);
    }
}

/* Анимации */
@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes modalFadeOut {
    from {
        opacity: 1;
        transform: scale(1);
    }
    to {
        opacity: 0;
        transform: scale(0.9);
    }
}

.filter-modal.closing .filter-modal-content {
    animation: modalFadeOut 0.3s ease forwards;
}

/* Улучшения для скроллбара */
.filter-modal-body::-webkit-scrollbar {
    width: 6px;
}

.filter-modal-body::-webkit-scrollbar-track {
    background: var(--bg-color);
    border-radius: 3px;
}

.filter-modal-body::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.filter-modal-body::-webkit-scrollbar-thumb:hover {
    background: var(--subtle-text-color);
}

/* Состояние загрузки */
.filter-option.loading {
    opacity: 0.6;
    pointer-events: none;
}

.filter-option.loading::after {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-color);
    border-top: 2px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Стили для иерархических категорий */
.filter-option.parent-category {
    font-weight: 600;
    background: var(--bg-color);
    border-left: 4px solid var(--accent-color);
}

.filter-option.child-category {
    padding-left: 32px;
    font-size: 0.95rem;
    color: var(--subtle-text-color);
    position: relative;
}

.filter-option.child-category::before {
    content: '--';
    position: absolute;
    z-index: 0;
    left: 16px;
    color: var(--border-color);
    font-size: 0.8rem;
}

.filter-option.child-category:hover {
    color: var(--text-color);
}

.filter-option.child-category.selected {
    color: white;
}

.filter-option.parent-category.selected {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

/* Группировка категорий */
.category-group {
    margin-bottom: 8px;
}

.category-group:last-child {
    margin-bottom: 0;
}

/* Разделитель между группами */
.category-separator {
    height: 1px;
    background: var(--border-color);
    margin: 8px 0;
    opacity: 0.3;
}



/* ==============================================
   ДОПОЛНИТЕЛЬНЫЕ СТИЛИ ДЛЯ ОБЩИХ ЭЛЕМЕНТОВ
   ============================================== */

/* Стили для пустого состояния */
.no-results {
    text-align: center;
    padding: 80px 20px;
    color: var(--subtle-text-color);
}

.no-results i {
    font-size: 4rem;
    margin-bottom: 25px;
    color: var(--border-color);
}

.no-results h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-color);
    font-weight: 600;
}

.no-results p {
    font-size: 1rem;
    line-height: 1.6;
    max-width: 500px;
    margin: 0 auto;
}

/* Стили для поиска */
.search-section {
    margin-bottom: 40px;
}

.search-form {
    max-width: 600px;
    margin: 0 auto;
}

.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.search-input-wrapper:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.search-input {
    flex: 1;
    padding: 18px 25px;
    border: none;
    outline: none;
    font-size: 1rem;
    background: transparent;
    color: var(--text-color);
}

.search-input::placeholder {
    color: var(--subtle-text-color);
}

.search-btn {
    padding: 18px 25px;
    background: var(--primary-color);
    color: white;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 60px;
}

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

/* Стили для результатов поиска */
.search-results-info {
    margin-bottom: 30px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 12px;
}

.search-results-info p {
    margin: 0 0 5px 0;
    font-size: 1rem;
    color: var(--text-color);
}

.results-count {
    font-size: 0.9rem;
    color: var(--subtle-text-color);
    font-weight: 500;
}

/* Стили для пагинации */
.pagination-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-top: 60px;
    padding: 30px 0;
}

.pagination-link {
    padding: 12px 20px;
    background: white;
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    border: 2px solid var(--primary-color);
    transition: all 0.3s ease;
}

.pagination-link:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.pagination-info {
    font-weight: 600;
    color: var(--text-color);
    font-size: 1rem;
}

/* Анимации */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.group-card,
.member-card,
.resource-card-small {
    animation: fadeInUp 0.6s ease forwards;
}

.group-card:nth-child(1) { animation-delay: 0.1s; }
.group-card:nth-child(2) { animation-delay: 0.2s; }
.group-card:nth-child(3) { animation-delay: 0.3s; }
.group-card:nth-child(4) { animation-delay: 0.4s; }
.group-card:nth-child(5) { animation-delay: 0.5s; }
.group-card:nth-child(6) { animation-delay: 0.6s; }

/* Стили для заголовков страниц */
.about-hero-title {
    font-family: var(--header-font);
    font-size: 2.8rem;
    line-height: 1.2;
    margin-bottom: 0;
    color: var(--text-color);
    font-weight: 800;
}

.about-hero-description {
    font-size: 1.1rem;
    color: var(--subtle-text-color);
    margin-bottom: 50px;
    max-width: 800px;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .about-hero-title {
        font-size: 2.2rem;
    }
    
    .about-hero-description {
        font-size: 1rem;
        margin-bottom: 40px;
    }
    
    .search-input-wrapper {
        border-radius: 12px;
    }
    
    .search-input,
    .search-btn {
        padding: 15px 20px;
    }
    
    .pagination-nav {
        gap: 15px;
        margin-top: 40px;
        flex-wrap: wrap;
    }
    
    .pagination-link {
        padding: 10px 16px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .about-hero-title {
        font-size: 1.8rem;
    }
    
    .about-hero-description {
        font-size: 0.95rem;
        margin-bottom: 30px;
    }
    
    .search-input,
    .search-btn {
        padding: 12px 18px;
        font-size: 0.9rem;
    }
}

.nav-links {
  display: flex;
  justify-content: space-between;
  gap: 30px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 20px;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  transition: all 0.3s ease;
  flex: 1;
}

.nav-link:hover {
  border-color: var(--accent-color);
  background-color: var(--card-bg-color);
}

.nav-link.prev {
  text-align: left;
}

.nav-link.next {
  text-align: right;
  flex-direction: row-reverse;
}

.nav-link i {
  font-size: 1.5rem;
  color: var(--subtle-text-color);
}

.nav-link-content span {
  font-size: 0.9rem;
  color: var(--subtle-text-color);
}

.nav-link-content h4 {
  font-family: var(--header-font);
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 5px;
}



@media (max-width: 768px) {
  .research-grid {
    grid-template-columns: 1fr;
  }
  
  .nav-links {
    flex-direction: column;
  }
  
  .research-info {
    grid-template-columns: 1fr;
  }
  
  .featured-research-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Стили для плавающей кнопки контактов --- */
.floating-contact-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
    transition: all 0.3s ease;
}

.contact-fab {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--subtle-text-color) 100%);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.contact-fab::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, transparent 100%);
    border-radius: 50%;
    transition: opacity 0.3s ease;
    opacity: 0;
}

.contact-fab:hover::before {
    opacity: 1;
}

.contact-fab:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

.contact-fab:active {
    transform: translateY(-1px) scale(1.02);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.contact-fab i {
    font-size: 1.4rem;
    color: white;
    transition: all 0.3s ease;
    z-index: 1;
}

.contact-fab:hover i {
    transform: scale(1.1);
}

/* Анимация появления кнопки */
.floating-contact-btn {
    animation: fadeInUp 0.6s ease 0.5s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Пульсация для привлечения внимания */
.contact-fab.pulse {
    animation: fabPulse 2s infinite;
}

@keyframes fabPulse {
    0% {
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15), 0 0 0 0 rgba(33, 37, 41, 0.4);
    }
    70% {
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15), 0 0 0 15px rgba(33, 37, 41, 0);
    }
    100% {
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15), 0 0 0 0 rgba(33, 37, 41, 0);
    }
}

/* Скрытие кнопки при прокрутке вниз (опционально) */
.floating-contact-btn.hidden {
    transform: translateY(100px);
    opacity: 0;
    pointer-events: none;
}

/* Адаптивность для плавающей кнопки */
@media (max-width: 768px) {
    .floating-contact-btn {
        bottom: 20px;
        right: 20px;
    }
    
    .contact-fab {
        width: 56px;
        height: 56px;
    }
    
    .contact-fab i {
        font-size: 1.3rem;
    }
}

@media (max-width: 480px) {
    .floating-contact-btn {
        bottom: 15px;
        right: 15px;
    }
    
    .contact-fab {
        width: 52px;
        height: 52px;
    }
    
    .contact-fab i {
        font-size: 1.2rem;
    }
}

/* Стили для состояния активности */
.contact-fab[aria-expanded="true"] {
    background: linear-gradient(135deg, var(--subtle-text-color) 0%, var(--accent-color) 100%);
    transform: rotate(180deg) scale(1.1);
}

.contact-fab[aria-expanded="true"] i {
    transform: rotate(-180deg);
}