/* ============================================================
   pages/blog.css — Blog Listing, Article Cards, Article Detail
   tgport.ru Design System
   ============================================================ */

/* --- Blog Listing Grid --- */

.blog-grid {
  display: grid;
  gap: var(--space-xl);
}

.blog-grid--featured .blog-grid__item:first-child {
  grid-column: 1 / -1;
}

/* --- Article Card --- */

.article-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition:
    box-shadow var(--transition-base),
    transform var(--transition-base);
}

.article-card:hover {
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}

.article-card__img {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-bg-sunken);
}

.article-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.article-card:hover .article-card__img img {
  transform: scale(1.03);
}

.article-card__body {
  padding: var(--space-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.article-card__tag {
  padding: 0.1em 0.5em;
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.article-card__title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--color-heading);
  transition: color var(--transition-fast);
}

.article-card:hover .article-card__title {
  color: var(--color-accent);
}

.article-card__excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
  flex: 1;
}

.article-card__footer {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: var(--border-w) solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.article-card__read-time {
  display: flex;
  align-items: center;
  gap: var(--space-2xs);
}

/* --- Article Detail --- */

.article {
  max-width: 720px;
  margin-inline: auto;
}

.article__header {
  margin-bottom: var(--space-2xl);
}

.article__tag {
  display: inline-block;
  padding: 0.15em 0.6em;
  font-size: var(--text-xs);
  font-weight: 600;
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-md);
}

.article__title {
  font-size: var(--text-3xl);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

.article__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* --- Article Typography (Prose) --- */

.prose h2 {
  font-size: var(--text-xl);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.prose h3 {
  font-size: var(--text-lg);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.prose p {
  font-size: var(--text-base);
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
}

.prose ul,
.prose ol {
  margin-bottom: var(--space-lg);
  padding-left: var(--space-xl);
}

.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }

.prose li {
  font-size: var(--text-base);
  line-height: 1.7;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.prose a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition-fast);
}

.prose a:hover {
  color: var(--color-accent-hover);
}

.prose img {
  border-radius: var(--radius-md);
  margin-block: var(--space-xl);
}

.prose blockquote {
  margin-block: var(--space-xl);
  padding: var(--space-lg) var(--space-xl);
  border-left: 3px solid var(--color-accent);
  background: var(--color-accent-subtle);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--color-text-secondary);
}

.prose blockquote p:last-child {
  margin-bottom: 0;
}

.prose pre {
  margin-block: var(--space-xl);
}

.prose hr {
  border: none;
  height: var(--border-w);
  background: var(--color-border);
  margin-block: var(--space-2xl);
}

/* --- Table of Contents --- */

.toc {
  padding: var(--space-lg);
  background: var(--color-surface);
  border: var(--border-w) solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-2xl);
}

.toc__title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-heading);
  margin-bottom: var(--space-sm);
}

.toc__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
}

.toc__link {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  padding: var(--space-2xs) 0;
  transition: color var(--transition-fast);
}

.toc__link:hover {
  color: var(--color-accent);
}

.toc__link--nested {
  padding-left: var(--space-lg);
}

/* --- Inline CTA --- */

.inline-cta {
  padding: var(--space-xl);
  background:
    linear-gradient(
      135deg,
      var(--color-accent-subtle) 0%,
      var(--color-secondary-subtle) 100%
    ),
    var(--color-surface);
  border: var(--border-w) solid var(--color-accent-muted);
  border-radius: var(--radius-lg);
  text-align: center;
  margin-block: var(--space-2xl);
}

.inline-cta__title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.inline-cta__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

/* --- Related Posts --- */

.related-posts {
  margin-top: var(--space-3xl);
  padding-top: var(--space-2xl);
  border-top: var(--border-w) solid var(--color-border);
}

.related-posts__title {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-xl);
}

.related-posts__grid {
  display: grid;
  gap: var(--space-lg);
}

/* --- Blog Filters --- */

.blog-filters__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.blog-filters__categories {
  display: flex;
  align-items: center;
  gap: var(--space-2xs);
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.blog-filters__categories::-webkit-scrollbar {
  display: none;
}

.filter-tab {
  padding: var(--space-xs) var(--space-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  background: transparent;
  border: var(--border-w) solid var(--color-border);
  border-radius: var(--radius-full);
  white-space: nowrap;
  cursor: pointer;
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast);
}

.filter-tab:hover {
  background: var(--color-surface-hover);
  color: var(--color-heading);
  border-color: var(--color-border-hover);
}

.filter-tab--active {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.filter-tab--active:hover {
  background: var(--color-accent-hover);
  color: #fff;
  border-color: var(--color-accent-hover);
}

.blog-filters__search {
  flex-shrink: 0;
  width: 240px;
}

/* --- Blog Card --- */

.blog-card {
  display: flex;
  flex-direction: column;
  background: var(--card-bg);
  border: var(--border-w) solid var(--card-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition:
    box-shadow var(--transition-base),
    transform var(--transition-base);
}

.blog-card:hover {
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}

.blog-card__link {
  display: flex;
  flex-direction: column;
  flex: 1;
  color: inherit;
  text-decoration: none;
}

.blog-card__cover {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-bg-sunken);
}

.blog-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.blog-card:hover .blog-card__cover img {
  transform: scale(1.03);
}

.blog-card__body {
  padding: var(--space-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.blog-card__category {
  display: inline-block;
  align-self: flex-start;
  padding: 0.1em 0.55em;
  font-size: var(--text-xs);
  font-weight: 600;
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-sm);
}

.blog-card__title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-heading);
  margin-bottom: var(--space-xs);
  transition: color var(--transition-fast);
}

.blog-card:hover .blog-card__title {
  color: var(--color-accent);
}

.blog-card__excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
  flex: 1;
}

.blog-card__meta {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: var(--border-w) solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.blog-card__read {
  font-weight: 600;
  color: var(--color-accent);
}

/* --- Blog Empty --- */

.blog-empty {
  text-align: center;
  padding: var(--space-3xl) var(--space-lg);
  color: var(--color-text-muted);
  font-size: var(--text-md);
}

/* --- Pagination --- */

.blog-listing .pagination {
  margin-top: var(--space-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
}

.pagination__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding-inline: var(--space-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition:
    background var(--transition-fast),
    color var(--transition-fast);
}

.pagination__link:hover {
  background: var(--color-surface-hover);
  color: var(--color-heading);
}

.pagination__link--current {
  background: var(--color-accent);
  color: #fff;
}

.pagination__ellipsis {
  color: var(--color-text-muted);
}

/* --- Responsive --- */

@media (min-width: 768px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .article__title {
    font-size: var(--text-4xl);
  }

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

@media (max-width: 767px) {
  .blog-filters__bar {
    flex-direction: column;
    align-items: stretch;
  }

  .blog-filters__search {
    width: 100%;
  }

  .blog-filters__categories {
    padding-bottom: var(--space-xs);
  }
}

@media (min-width: 1024px) {
  .blog-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .blog-grid--featured .blog-grid__item:first-child .article-card {
    flex-direction: row;
  }

  .blog-grid--featured .blog-grid__item:first-child .article-card__img {
    width: 50%;
    aspect-ratio: auto;
  }

  .related-posts__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}