/* ============================================
   Blog — Styles
   ============================================ */

/* ===== Blog Index Hero ===== */

.blog-hero {
  position: relative;
  padding-top: calc(var(--nav-height) + 64px);
  padding-bottom: 48px;
  overflow: hidden;
  background: var(--gradient-hero);
}

.blog-hero-bg {
  position: absolute;
  inset: 0;
  opacity: 0.4;
}

.blog-hero-bg::before,
.blog-hero-bg::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
}

.blog-hero-bg::before {
  width: 400px;
  height: 400px;
  background: var(--accent-glow, rgba(0, 128, 96, 0.15));
  top: -100px;
  right: 10%;
}

.blog-hero-bg::after {
  width: 300px;
  height: 300px;
  background: var(--accent-glow, rgba(0, 128, 96, 0.1));
  bottom: -80px;
  left: 15%;
}

.blog-hero h1 {
  font-size: 2.75rem;
  margin-bottom: 0;
}

/* ===== Featured Post ===== */

.blog-featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  text-decoration: none;
  color: var(--text-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.blog-featured:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.blog-featured-image {
  position: relative;
  overflow: hidden;
}

.blog-featured-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.blog-featured-content {
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.blog-featured-title {
  font-size: 1.5rem;
  line-height: 1.3;
  margin-bottom: 12px;
}

.blog-featured-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 8px;
}

/* ===== Tag Filter ===== */

.blog-filter-section {
  padding: 0 0 16px;
}

.blog-filter-bar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 4px 0;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.blog-filter-bar::-webkit-scrollbar {
  display: none;
}

.blog-filter-tag {
  flex-shrink: 0;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-transform: capitalize;
}

.blog-filter-tag:hover {
  border-color: var(--accent);
  color: var(--accent-text);
}

.blog-filter-tag.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
}

/* ===== Blog Grid & Cards ===== */

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.blog-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--text-primary);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.blog-card.hidden {
  display: none;
}

.blog-card-image {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-secondary);
}

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

.blog-card:hover .blog-card-image img {
  transform: scale(1.04);
}

.blog-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.blog-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}

.blog-tag {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: var(--accent-muted);
  color: var(--accent-text);
}

.blog-card-title {
  font-size: 1.1875rem;
  line-height: 1.35;
  margin-bottom: 10px;
}

.blog-card-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}

.blog-card-meta {
  margin-top: 12px;
  font-size: 0.8125rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ===== Blog Post Hero Image ===== */

.blog-post-hero {
  position: relative;
  width: 100%;
  max-height: 420px;
  overflow: hidden;
  margin-top: var(--nav-height);
}

.blog-post-hero img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  display: block;
}

.blog-post-hero-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to top, var(--bg-primary), transparent);
}

/* ===== Blog Post Layout (with TOC sidebar) ===== */

.blog-post-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  max-width: 780px;
}

.blog-post-layout:has(.blog-toc) {
  max-width: 1060px;
  grid-template-columns: 220px 1fr;
}

/* ===== Table of Contents ===== */

.blog-toc {
  position: relative;
}

.blog-toc-inner {
  position: sticky;
  top: calc(var(--nav-height) + 24px);
}

.blog-toc h4 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.blog-toc nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-left: 2px solid var(--border-color);
  padding-left: 12px;
}

.blog-toc-link {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  text-decoration: none;
  line-height: 1.4;
  transition: color var(--transition-fast);
}

.blog-toc-link:hover {
  color: var(--accent-text);
}

/* ===== Post Header ===== */

.blog-post-container {
  min-width: 0;
}

.blog-post-breadcrumb {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.blog-post-breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
}

.blog-post-breadcrumb a:hover {
  color: var(--accent-text);
}

.blog-post-breadcrumb > span {
  margin: 0 6px;
}

.blog-post-breadcrumb > span:last-child {
  margin: 0;
  color: var(--text-primary);
}

.blog-post-header h1 {
  font-size: 2.25rem;
  line-height: 1.2;
  margin-bottom: 16px;
}

.blog-post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border-color);
}

/* ===== Post Body ===== */

.blog-post-body h2 {
  font-size: 1.5rem;
  margin-top: 48px;
  margin-bottom: 16px;
  scroll-margin-top: calc(var(--nav-height) + 16px);
}

.blog-post-body h3 {
  font-size: 1.25rem;
  margin-top: 32px;
  margin-bottom: 12px;
}

.blog-post-body p {
  font-size: 1.0625rem;
  line-height: 1.75;
  margin-bottom: 20px;
  max-width: none;
}

.blog-post-body ul,
.blog-post-body ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

.blog-post-body li {
  font-size: 1.0625rem;
  line-height: 1.75;
  margin-bottom: 8px;
}

.blog-post-body li::marker {
  color: var(--accent-text);
}

.blog-post-body a {
  color: var(--accent-text);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--accent-muted);
  transition: text-decoration-color var(--transition-fast);
}

.blog-post-body a:hover {
  text-decoration-color: var(--accent-text);
}

.blog-post-body blockquote {
  margin: 32px 0;
  padding: 20px 24px;
  border-left: 4px solid var(--accent);
  background: var(--bg-secondary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  font-size: 1.0625rem;
  line-height: 1.75;
  box-shadow: -8px 0 24px -12px var(--accent-muted);
}

.blog-post-body figure {
  margin: 32px 0;
}

.blog-post-body figure img {
  width: 100%;
  border-radius: var(--radius-md);
}

.blog-post-body figcaption {
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 8px;
}

/* ===== In-Post CTA ===== */

.blog-cta-card {
  margin: 40px 0;
  padding: 32px;
  text-align: center;
  background: var(--gradient-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
}

.blog-cta-card p {
  font-size: 1.125rem;
  font-style: normal;
  margin-bottom: 16px;
  max-width: none;
}

/* ===== Author Bio ===== */

.blog-author {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  margin-top: 48px;
  padding: 28px;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
}

.blog-author-avatar {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--accent-muted);
  color: var(--accent-text);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
}

.blog-author-avatar svg {
  width: 100%;
  height: 100%;
}

.blog-author-info strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 6px;
}

.blog-author-info p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 8px;
}

.blog-author-link {
  font-size: 0.875rem;
  color: var(--accent-text);
  text-decoration: none;
  font-weight: 500;
}

.blog-author-link:hover {
  text-decoration: underline;
}

/* ===== Post Footer ===== */

.blog-post-footer {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.blog-share {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.875rem;
}

.blog-share a {
  color: var(--accent-text);
  text-decoration: none;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.blog-share a:hover {
  border-color: var(--accent);
  background: var(--accent-muted);
}

/* ===== Related Posts ===== */

.blog-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.blog-related-card {
  padding: 0;
}

.blog-related-card .blog-card-title {
  font-size: 1rem;
}

.blog-related-card .blog-card-body {
  padding: 16px 20px;
}

/* ===== Prev/Next Nav ===== */

.blog-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.blog-nav-link {
  display: flex;
  flex-direction: column;
  padding: 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  text-decoration: none;
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.blog-nav-link small {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.blog-nav-link span {
  font-weight: 600;
  font-size: 0.938rem;
}

.blog-nav-next {
  text-align: right;
}

/* ===== Responsive ===== */

@media (max-width: 1024px) {
  .blog-post-layout:has(.blog-toc) {
    grid-template-columns: 1fr;
    max-width: 780px;
  }

  .blog-toc {
    order: -1;
  }

  .blog-toc-inner {
    position: static;
    padding: 16px 20px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
  }

  .blog-toc nav {
    flex-direction: row;
    flex-wrap: wrap;
    border-left: none;
    padding-left: 0;
    gap: 4px 12px;
  }
}

@media (max-width: 768px) {
  .blog-hero h1 {
    font-size: 2rem;
  }

  .blog-featured {
    grid-template-columns: 1fr;
  }

  .blog-featured-image {
    aspect-ratio: 16 / 9;
  }

  .blog-featured-content {
    padding: 28px;
  }

  .blog-grid {
    grid-template-columns: 1fr;
  }

  .blog-related-grid {
    grid-template-columns: 1fr;
  }

  .blog-post-hero img {
    height: 260px;
  }

  .blog-post-header h1 {
    font-size: 1.75rem;
  }

  .blog-nav {
    grid-template-columns: 1fr;
  }

  .blog-author {
    flex-direction: column;
    text-align: center;
    align-items: center;
  }
}

@media (max-width: 480px) {
  .blog-hero h1 {
    font-size: 1.75rem;
  }

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

  .blog-post-header h1 {
    font-size: 1.5rem;
  }

  .blog-post-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .blog-post-meta > span:nth-child(even):not(.blog-tag) {
    display: none;
  }

  .blog-post-hero img {
    height: 200px;
  }

  .blog-share {
    flex-wrap: wrap;
  }
}