/* --- CSS переменные и базовые стили --- */
:root {
    --bg-color: #f8f9fa;
    --text-color: #212529;
    --card-bg: #ffffff;
    --header-bg: rgba(255, 255, 255, 0.85);
    --accent-color: #007bff;
    --border-color: #dee2e6;
    --shadow-color: rgba(0, 0, 0, 0.05);
    --muted-text-color: #6c757d;

    --status-safe: #28a745;
    --status-caution: #ffc107;
    --status-undesirable: #fd7e14;
    --status-danger: #dc3545;
}

[data-theme="dark"] {
    --bg-color: #000000;
    --text-color: #e9ecef;
    --card-bg: #1a1a1a;
    --header-bg: rgba(0, 0, 0, 0.8);
    --accent-color: #58a6ff;
    --border-color: #495057;
    --shadow-color: rgba(255, 255, 255, 0.05);
    --muted-text-color: #adb5bd;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* --- Шапка сайта --- */
.site-header {
    position: sticky;
    top: 0;
    width: 100%;
    padding: 0.75rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--header-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-color); /* <<== ВОТ ЭТА СТРОКА */
    transition: color 3s ease; /* Плавный переход цвета для красоты */
}

.logo-container svg {
    height: 35px;
    width: 35px;

}

.logo-text {
    font-weight: 700;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.desktop-nav {
    display: flex;
    gap: 1.5rem;
    margin-right: auto;
    margin-left: 2rem;
}
.desktop-nav a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.2s ease;
}
.desktop-nav a:hover {
    color: var(--accent-color);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}
.social-links a, #theme-toggle, .mobile-menu-toggle {
    color: var(--text-color);
    transition: color 0.2s ease, transform 0.2s ease;
}
.social-links a:hover {
    color: var(--accent-color);
    transform: scale(1.1);
}
.social-links svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

#theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    line-height: 1;
}

/* --- Мобильное меню --- */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
}
.mobile-menu-toggle svg {
    width: 28px;
    height: 28px;
}
.mobile-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100%;
    background-color: var(--card-bg);
    box-shadow: -5px 0 15px rgba(0,0,0,0.1);
    transform: translateX(100%);
    transition: transform 0.3s ease-in-out;
    z-index: 2000;
    padding: 6rem 2rem 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
.mobile-nav.open {
    transform: translateX(0);
}
.mobile-menu-close {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 2.5rem;
    line-height: 1;
    cursor: pointer;
}
.mobile-nav a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: 500;
}
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
.overlay.visible {
    opacity: 1;
    visibility: visible;
}

/* --- Основной контент и общие элементы --- */
main {
    padding: 2rem 5%;
}
.content-section, .subsection {
    margin-bottom: 4rem;
}
.section-header {
    margin-bottom: 2rem;
}
.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}
.section-header p {
    font-size: 1.1rem;
    color: #888;
}
.see-all-btn {
    display: inline-block;
    margin-top: 2rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--accent-color);
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    transition: background-color 0.2s ease, transform 0.2s ease;
}
.see-all-btn:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

/* --- Карточки продуктов --- */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 1.5rem;
}
.product-card {
    background-color: var(--card-bg);
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-color);
    overflow: hidden;
    box-shadow: 0 4px 15px var(--shadow-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    display: flex;
    flex-direction: column;
    border-left: 5px solid transparent; /* Для главной страницы */
}
.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-color);
}
.product-card img {
    width: 100%;
    height: 100px;
    object-fit: cover;
    display: block;
}
.product-card span {
    padding: 1rem;
    font-weight: 600;
    text-align: center;
}
/* Статусы продуктов для главной страницы */
.status-safe { border-color: var(--status-safe); }
.status-caution { border-color: var(--status-caution); }
.status-undesirable { border-color: var(--status-undesirable); }
.status-danger { border-color: var(--status-danger); }


/* --- Карточки статей и контейнеры --- */
.articles-container {
    position: relative;
}
.articles-scroll-container {
    display: flex;
    gap: 1.5rem;
    overflow-x: auto;
    padding-bottom: 1.5rem;
    -ms-overflow-style: none;
    scrollbar-width: none;
    scroll-behavior: smooth;
}
.articles-scroll-container::-webkit-scrollbar {
    display: none;
}
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}
.article-card {
    background-color: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    text-decoration: none;
    color: var(--text-color);
    box-shadow: 0 4px 15px var(--shadow-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
/* Специальный стиль для скролл-контейнера на главной */
.articles-scroll-container .article-card {
    flex: 0 0 280px;
}
.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-color);
}
.article-card img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    display: block;
}
.article-card-content {
    padding: 1rem;
}
.article-card-content h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}
.article-card-content p {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Кнопки прокрутки для главной */
.scroll-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(255, 255, 255, 0.7);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    z-index: 10;
    font-size: 1.5rem;
    color: var(--text-color);
    display: none; /* JS управляет видимостью */
    justify-content: center;
    align-items: center;
    transition: background-color 0.2s, box-shadow 0.2s, opacity 0.2s;
}
[data-theme="dark"] .scroll-btn {
    background-color: rgba(0, 0, 0, 0.7);
}
.scroll-btn:hover {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
[data-theme="dark"] .scroll-btn:hover {
    background-color: #333;
}
.scroll-btn.left { left: -20px; }
.scroll-btn.right { right: -20px; }


/* --- Стили для страниц разделов (Продукты, Диетология) --- */
.page-header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}
.page-header h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}
.subsection h2 {
    font-size: 2.2rem;
    margin-bottom: 2rem;
    padding-left: 1rem;
    border-left: 4px solid var(--accent-color);
}
/* Цвета для заголовков на странице продуктов */
.subsection-safe h2 { border-color: var(--status-safe); }
.subsection-caution h2 { border-color: var(--status-caution); }
.subsection-undesirable h2 { border-color: var(--status-undesirable); }
.subsection-danger h2 { border-color: var(--status-danger); }


/* --- Стили для страницы статьи --- */
.article-container {
    max-width: 800px;
    margin: 0 auto;
}
.breadcrumbs {
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    color: var(--muted-text-color);
}
.breadcrumbs a {
    color: var(--muted-text-color);
    text-decoration: none;
}
.breadcrumbs a:hover {
    text-decoration: underline;
}
.article-header h1 {
    font-size: 2.8rem;
    line-height: 1.2;
    margin-bottom: 1rem;
}
.article-meta {
    font-size: 0.9rem;
    color: var(--muted-text-color);
    margin-bottom: 2rem;
}
.article-hero-image {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 2rem;
}
.article-body {
    font-size: 1.1rem;
    line-height: 1.7;
}
.article-body h2 {
    font-size: 1.8rem;
    margin-top: 2.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}
.article-body h3 {
    font-size: 1.4rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
}
.article-body p, .article-body ul, .article-body ol {
    margin-bottom: 1.5rem;
}
.article-body a {
    color: var(--accent-color);
    text-decoration: none;
}
.article-body a:hover {
    text-decoration: underline;
}
.article-body ul, .article-body ol {
    padding-left: 1.5rem;
}
.article-body blockquote {
    border-left: 4px solid var(--accent-color);
    padding-left: 1.5rem;
    margin: 2rem 0;
    font-style: italic;
    color: var(--muted-text-color);
}
.related-articles {
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 1px solid var(--border-color);
}
.related-articles h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 2rem;
}
.related-articles .articles-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}
.related-articles .article-card img {
    height: 140px;
}

/* --- Подвал --- */
.site-footer {
    margin-top: 2rem;
    padding: 2rem 5%;
    border-top: 1px solid var(--border-color);
    text-align: center;
}
.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}
.footer-content .social-links { 
    margin-bottom: 1rem;
    display: flex !important; /* Важно, чтобы иконки всегда были видны в футере */
}
.footer-content a {
    color: var(--text-color);
    text-decoration: none;
}
.footer-content a:hover { text-decoration: underline; }
.footer-content p { font-size: 0.9rem; opacity: 0.7; }

/* --- Адаптивность --- */
@media (min-width: 1025px) {
    .articles-container:hover .scroll-btn {
        opacity: 1;
        pointer-events: auto;
    }
}

@media (max-width: 1024px) {
    .desktop-nav, .site-header .social-links {
        display: none;
    }
    .mobile-menu-toggle {
        display: block;
    }
}

@media (max-width: 768px) {
    .logo-text { font-size: 1.2rem; }
    .logo-img { width: 32px; height: 32px; }
    main { padding: 1.5rem 5%; }
    
    /* Главная страница */
    .section-header h2 { font-size: 2rem; }
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 1rem;
    }
    .articles-scroll-container .article-card { flex-basis: 250px; }

    /* Страницы разделов */
    .page-header h1 { font-size: 2.2rem; }
    .subsection h2 { font-size: 1.8rem; }
    .articles-grid { grid-template-columns: 1fr; }

    /* Страница статьи */
    .article-header h1 { font-size: 2.2rem; }
}