/* ============================================================
 *  Blog Cards & Section Styles
 *  Shared between homepage blog section and blog list/detail pages.
 *  Uses design-system.css tokens.
 * ============================================================ */

/* ─── Section ─────────────────────────────────────────────── */
.blog-section {
  padding: 72px 0;
  background: var(--bg-page-alt);
}

/* ─── Blog Grid ───────────────────────────────────────────── */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 36px;
}

/* ─── Blog Card ───────────────────────────────────────────── */
.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.25s var(--ease-default),
              box-shadow 0.25s var(--ease-default),
              border-color 0.25s var(--ease-default);
  cursor: pointer;
  display: flex;
  flex-direction: column;
}
.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-gold-400);
}
.blog-card-link {
  display: flex;
  flex-direction: column;
  height: 100%;
  color: inherit;
  text-decoration: none;
}

/* Card image / gradient header */
.blog-card-img {
  height: 140px;
  background: linear-gradient(135deg, var(--color-navy-800) 0%, var(--color-blue-600) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}
.blog-card-img::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(232, 168, 56, 0.25) 0%, transparent 70%);
  border-radius: 50%;
}
.blog-card-img .icon-wrap {
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gold-300);
  z-index: 1;
}

/* Card body */
.blog-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.blog-card-category {
  font-size: 11.5px;
  font-weight: 700;
  color: var(--color-gold-600);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.blog-card h3 {
  font-family: 'Noto Serif SC', Georgia, 'Times New Roman', serif;
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.5;
  margin: 0;
}
.blog-card-excerpt {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.65;
  flex: 1;
  margin: 0;
}
.blog-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
  padding-top: 10px;
  border-top: 1px solid var(--border-subtle);
  margin-top: 4px;
}
.blog-card-read-more {
  color: var(--color-blue-600);
  font-weight: 600;
  font-size: 13px;
}

/* ─── Blog list (full-width 3-column) ────────────────────── */
.blog-grid-list {
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

/* ─── Blog small grid (related articles) ─────────────────── */
.blog-grid-small {
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 20px;
}
.blog-grid-small .blog-card-img {
  height: 110px;
}
.blog-grid-small .blog-card-body {
  padding: 16px;
  gap: 8px;
}
.blog-grid-small .blog-card h3 {
  font-size: 15px;
}
.blog-grid-small .blog-card-excerpt {
  font-size: 12.5px;
}

/* ─── Responsive ─────────────────────────────────────────── */
@media (max-width: 960px) {
  .blog-grid,
  .blog-grid-list,
  .blog-grid-small {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 600px) {
  .blog-grid,
  .blog-grid-list,
  .blog-grid-small {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .blog-section {
    padding: 48px 0;
  }
  .blog-card-img {
    height: 120px;
  }
  .blog-card-body {
    padding: 16px;
  }
  .blog-card h3 {
    font-size: 16px;
  }
}

/* ─── Blog article detail page ───────────────────────────── */
.blog-detail-page {
  padding: 80px 0 60px;
  background: var(--bg-page);
}
.blog-hero {
  text-align: center;
  margin-bottom: 48px;
}
.blog-hero-title {
  font-size: 40px;
  font-weight: 800;
  color: var(--text-primary);
  margin: 12px 0;
  line-height: 1.2;
}
.blog-hero-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Toolbar */
.blog-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.blog-filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.blog-filter-btn {
  padding: 8px 16px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-full);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s var(--ease-default);
}
.blog-filter-btn:hover {
  border-color: var(--color-blue-500);
  color: var(--color-blue-600);
}
.blog-filter-btn.active {
  background: var(--color-navy-800);
  color: #fff;
  border-color: var(--color-navy-800);
}
.blog-search-wrap {
  flex-shrink: 0;
}
.blog-search-input {
  padding: 8px 14px 8px 36px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-full);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 13.5px;
  width: 220px;
  transition: border-color 0.2s var(--ease-default);
}
.blog-search-input:focus {
  outline: none;
  border-color: var(--color-blue-500);
}

/* Pagination */
.blog-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin-top: 40px;
}
.blog-page-btn {
  min-width: 36px;
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s var(--ease-default);
}
.blog-page-btn:hover:not(.disabled) {
  border-color: var(--color-blue-500);
  color: var(--color-blue-600);
}
.blog-page-btn.active {
  background: var(--color-navy-800);
  color: #fff;
  border-color: var(--color-navy-800);
}
.blog-page-btn.disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* Article detail */
.blog-article {
  max-width: 760px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 48px 56px;
}
.blog-article-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-subtle);
}
.blog-article-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.3;
  margin: 12px 0;
}
.blog-article-summary {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0 0 16px;
}
.blog-article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
  flex-wrap: wrap;
}
.blog-meta-dot {
  color: var(--border-strong);
}

.blog-article-body {
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--text-primary);
}
.blog-h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 36px;
  margin-bottom: 16px;
}
.blog-h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 28px;
  margin-bottom: 12px;
}
.blog-h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 20px;
  margin-bottom: 10px;
}
.blog-p {
  margin: 0 0 16px;
}
.blog-ul {
  margin: 0 0 16px;
  padding-left: 20px;
}
.blog-ul li {
  margin-bottom: 6px;
}

/* Callout / Alert boxes */
.blog-callout {
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  margin: 20px 0;
  border-left: 4px solid;
  background: var(--bg-soft);
}
.blog-callout-info {
  border-left-color: var(--color-blue-500);
  background: var(--color-blue-50);
}
html[data-theme="dark"] .blog-callout-info {
  background: rgba(29, 111, 184, 0.12);
}
.blog-callout-success {
  border-left-color: var(--color-green-500);
  background: var(--color-green-100);
}
html[data-theme="dark"] .blog-callout-success {
  background: rgba(61, 163, 118, 0.12);
}
.blog-callout-warning {
  border-left-color: var(--color-amber-500);
  background: var(--color-amber-100);
}
html[data-theme="dark"] .blog-callout-warning {
  background: rgba(214, 158, 46, 0.12);
}
.blog-callout-body {
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--text-primary);
}

/* Code blocks */
.blog-code {
  background: var(--color-navy-900);
  color: #E2E8F0;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  line-height: 1.6;
  margin: 16px 0;
}

/* FAQ section */
.blog-faq-section {
  margin: 28px 0;
}
.blog-faq-item {
  margin-bottom: 16px;
  padding: 16px 20px;
  background: var(--bg-soft);
  border-radius: var(--radius-md);
}
.blog-faq-q {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 8px;
}
.blog-faq-a {
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin: 0;
}

/* Tags */
.blog-tags {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.blog-tags-label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}
.blog-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--bg-soft);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-size: 12.5px;
  color: var(--text-secondary);
}

/* Related articles */
.blog-related {
  max-width: 1000px;
  margin: 48px auto 0;
}
.blog-related-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
  text-align: center;
}

/* Breadcrumb */
.breadcrumb {
  margin-bottom: 24px;
}
.breadcrumb ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb li + li::before {
  content: '/';
  margin-right: 8px;
  color: var(--border-strong);
}
.breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
}
.breadcrumb a:hover {
  color: var(--color-blue-600);
}
.breadcrumb .active {
  color: var(--text-primary);
  font-weight: 500;
}

.blog-back-btn {
  display: inline-block;
  margin-bottom: 20px;
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s var(--ease-default);
}
.blog-back-btn:hover {
  color: var(--color-blue-600);
}

.blog-empty {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .blog-article {
    padding: 28px 20px;
  }
  .blog-article-title {
    font-size: 24px;
  }
  .blog-hero-title {
    font-size: 28px;
  }
  .blog-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .blog-search-input {
    width: 100%;
  }
}