/* 
 * Blog Styles - Medium-inspired design
 * Blog.интеллектуальныепутешествия.рф
 */

/* === CSS Reset & Base === */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --color-primary: #1a1a2e;
    --color-secondary: #667eea;
    --color-accent: #764ba2;
    --color-text: #292929;
    --color-text-light: #6b7280;
    --color-bg: #ffffff;
    --color-bg-alt: #f9f9f9;
    --color-border: #e5e5e5;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;
    --max-width: 1200px;
    --transition: all 0.3s ease;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* === Header === */
.header {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    text-decoration: none;
}

.logo__text {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.5px;
}

.nav__list {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav__link {
    display: block;
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-light);
    border-radius: 20px;
    transition: var(--transition);
}

.nav__link:hover,
.nav__link.active {
    color: var(--color-primary);
    background: var(--color-bg-alt);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
}

/* === Main Content === */
.main {
    min-height: calc(100vh - 200px);
    padding: 40px 0;
}

/* === Featured Post === */
.featured-post {
    margin-bottom: 60px;
}

.featured-post__link {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    border-radius: 16px;
    overflow: hidden;
    transition: var(--transition);
}

.featured-post__link:hover {
    transform: translateY(-4px);
}

.featured-post__image {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
    border-radius: 12px;
}

.featured-post__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.featured-post__link:hover .featured-post__image img {
    transform: scale(1.05);
}

.featured-post__placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.featured-post__content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 20px 0;
}

.featured-post__category {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-secondary);
    margin-bottom: 12px;
}

.featured-post__title {
    font-family: var(--font-display);
    font-size: 42px;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
    margin-bottom: 16px;
}

.featured-post__excerpt {
    font-size: 16px;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 20px;
}

.featured-post__meta {
    display: flex;
    gap: 16px;
    font-size: 14px;
    color: var(--color-text-light);
}

.featured-post__read-time {
    font-weight: 500;
}

/* === Posts Grid === */
.posts-section {
    margin-bottom: 60px;
}

.section-title {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--color-border);
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.posts-grid--category {
    grid-template-columns: repeat(2, 1fr);
}

/* === Post Card === */
.post-card {
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
}

.post-card:hover {
    transform: translateY(-4px);
}

.post-card__link {
    display: block;
}

.post-card__image {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
    border-radius: 12px;
    margin-bottom: 16px;
}

.post-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.post-card:hover .post-card__image img {
    transform: scale(1.08);
}

.post-card__placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #e0e5ec 0%, #f5f7fa 100%);
}

.post-card__category {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--color-secondary);
    margin-bottom: 8px;
}

.post-card__title {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.3;
    margin-bottom: 10px;
}

.post-card__excerpt {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-card__meta {
    font-size: 13px;
    color: var(--color-text-light);
}

/* === Post Full Page === */
.post-full {
    padding: 40px 0;
}

.post-full__header {
    max-width: 740px;
    margin: 0 auto 40px;
    text-align: center;
}

.post-full__category {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-secondary);
    margin-bottom: 16px;
}

.post-full__title {
    font-family: var(--font-display);
    font-size: 48px;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
    margin-bottom: 20px;
}

.post-full__meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-size: 14px;
    color: var(--color-text-light);
}

.post-full__separator {
    color: var(--color-border);
}

.post-full__image {
    max-width: 900px;
    margin: 0 auto 50px;
    border-radius: 16px;
    overflow: hidden;
}

.post-full__image img {
    width: 100%;
    height: auto;
}

.post-full__content {
    max-width: 740px;
    margin: 0 auto;
    font-size: 18px;
    line-height: 1.8;
}

.post-full__content h2 {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 700;
    color: var(--color-primary);
    margin: 40px 0 20px;
    line-height: 1.3;
}

.post-full__content h3 {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 600;
    color: var(--color-primary);
    margin: 30px 0 15px;
    line-height: 1.3;
}

.post-full__content p {
    margin-bottom: 24px;
}

.post-full__content ul,
.post-full__content ol {
    margin: 24px 0 24px 30px;
}

.post-full__content li {
    margin-bottom: 10px;
}

.post-full__content strong {
    font-weight: 600;
    color: var(--color-primary);
}

.post-full__content em {
    font-style: italic;
    color: var(--color-text-light);
}

.post-full__content blockquote {
    border-left: 4px solid var(--color-secondary);
    padding: 20px 30px;
    margin: 30px 0;
    font-family: var(--font-display);
    font-size: 20px;
    font-style: italic;
    color: var(--color-text);
    background: var(--color-bg-alt);
    border-radius: 0 8px 8px 0;
}

.post-full__footer {
    max-width: 740px;
    margin: 50px auto 0;
    padding-top: 30px;
    border-top: 1px solid var(--color-border);
}

.post-full__tag {
    display: inline-block;
    padding: 8px 16px;
    background: var(--color-bg-alt);
    border-radius: 20px;
    font-size: 14px;
    color: var(--color-text-light);
    transition: var(--transition);
}

.post-full__tag:hover {
    background: var(--color-secondary);
    color: #fff;
}

/* === Related Posts === */
.related-posts {
    padding: 60px 0;
    background: var(--color-bg-alt);
    margin-top: 60px;
}

.related-posts__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 30px;
}

/* === Category Page === */
.category-header {
    text-align: center;
    margin-bottom: 50px;
    padding: 40px 0;
}

.category-title {
    font-family: var(--font-display);
    font-size: 42px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.category-description {
    font-size: 18px;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto 15px;
}

.category-count {
    font-size: 14px;
    color: var(--color-text-light);
}

.no-posts {
    text-align: center;
    padding: 60px 20px;
}

.no-posts p {
    font-size: 18px;
    color: var(--color-text-light);
    margin-bottom: 20px;
}

/* === Pagination === */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid var(--color-border);
}

.pagination__link {
    display: inline-flex;
    align-items: center;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-primary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    transition: var(--transition);
}

.pagination__link:hover {
    background: var(--color-bg-alt);
    border-color: var(--color-secondary);
}

.pagination__numbers {
    display: flex;
    gap: 6px;
}

.pagination__number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    transition: var(--transition);
}

.pagination__number:hover {
    background: var(--color-bg-alt);
    border-color: var(--color-secondary);
}

.pagination__number.active {
    background: var(--color-secondary);
    border-color: var(--color-secondary);
    color: #fff;
}

/* === Footer === */
.footer {
    background: var(--color-primary);
    color: #fff;
    padding: 40px 0;
    margin-top: 80px;
}

.footer__container {
    display: flex;
    justify-content: center;
}

.footer__content {
    display: flex;
    align-items: center;
    gap: 30px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer__text {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

.footer__link {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.footer__link:hover {
    color: #fff;
}

/* === Buttons === */
.btn {
    display: inline-block;
    padding: 12px 28px;
    background: var(--color-secondary);
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    border: none;
    border-radius: 24px;
    cursor: pointer;
    transition: var(--transition);
}

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

/* === Responsive === */
@media (max-width: 1024px) {
    .posts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .featured-post__link {
        grid-template-columns: 1fr;
    }
    
    .featured-post__title {
        font-size: 32px;
    }
    
    .post-full__title {
        font-size: 36px;
    }
    
    .related-posts__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: #fff;
        border-bottom: 1px solid var(--color-border);
        padding: 20px;
    }
    
    .nav.active {
        display: block;
    }
    
    .nav__list {
        flex-direction: column;
        gap: 4px;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .posts-grid,
    .posts-grid--category,
    .related-posts__grid {
        grid-template-columns: 1fr;
    }
    
    .featured-post__title {
        font-size: 26px;
    }
    
    .post-full__title {
        font-size: 28px;
    }
    
    .post-full__content {
        font-size: 16px;
        padding: 0 15px;
    }
    
    .category-title {
        font-size: 28px;
    }
    
    .pagination {
        flex-wrap: wrap;
    }
    
    .footer__content {
        flex-direction: column;
        gap: 15px;
    }
}

/* === Animations === */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.featured-post,
.post-card {
    animation: fadeIn 0.6s ease forwards;
}