/* ── Blog Detail Page ─────────────────────────────────────── */
* { box-sizing: border-box; }

.blog-detail-page { background: #f8faff; min-height: 100vh; }

/* Hero banner */
.bd-hero {
  position: relative;
  height: 480px;
  overflow: hidden;
  background: #0f172a;
}

.bd-hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.45;
  transition: transform 8s ease;
}

.bd-hero:hover .bd-hero-img { transform: scale(1.04); }

.bd-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15,23,42,0.95) 0%, rgba(15,23,42,0.3) 60%, transparent 100%);
}

.bd-hero-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 40px 48px;
  max-width: 1200px;
  margin: 0 auto;
}

.bd-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.bd-breadcrumb a { color: #93c5fd; font-size: 0.82rem; text-decoration: none; transition: color 0.2s; }
.bd-breadcrumb a:hover { color: #fff; }
.bd-breadcrumb span { color: #64748b; font-size: 0.82rem; }
.bd-breadcrumb-sep { color: #475569; }

.bd-category-badge {
  display: inline-block;
  background: #3b82f6;
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 14px;
  text-decoration: none;
}

.bd-hero-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin: 0 0 20px;
  max-width: 800px;
}

.bd-hero-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.bd-author-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.bd-author-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b82f6, #1e40af);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 2px solid rgba(255,255,255,0.3);
}

.bd-author-info .bd-author-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: #e2e8f0;
  display: block;
}
.bd-author-info .bd-author-role {
  font-size: 0.75rem;
  color: #94a3b8;
}

.bd-meta-divider { color: #475569; }

.bd-meta-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.82rem;
  color: #94a3b8;
}

/* Body layout */
.bd-body {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 32px 80px;
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  align-items: start;
}

/* Article */
.bd-article {
  background: #fff;
  border-radius: 20px;
  padding: 48px;
  box-shadow: 0 2px 16px rgba(15,23,42,0.06);
  border: 1px solid #e2e8f0;
}

.bd-content {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #334155;
}

.bd-content h2 {
  font-size: 1.5rem;
  font-weight: 800;
  color: #0f172a;
  margin: 36px 0 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid #f1f5f9;
}

.bd-content h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #1e293b;
  margin: 28px 0 12px;
}

.bd-content p { margin: 0 0 20px; }

.bd-content strong { color: #0f172a; }

.bd-content a { color: #1e40af; }

.bd-content ul, .bd-content ol {
  padding-left: 24px;
  margin: 0 0 20px;
}
.bd-content li { margin-bottom: 8px; }

.bd-content blockquote {
  margin: 28px 0;
  padding: 20px 24px;
  border-left: 4px solid #1e40af;
  background: #eff6ff;
  border-radius: 0 12px 12px 0;
  font-style: italic;
  color: #1e40af;
  font-size: 1.05rem;
}

.bd-content img {
  max-width: 100%;
  border-radius: 12px;
  margin: 24px 0;
}

/* Tags */
.bd-tags {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 24px 0 0;
  border-top: 1px solid #f1f5f9;
  margin-top: 40px;
}
.bd-tags-label { font-size: 0.82rem; font-weight: 700; color: #94a3b8; text-transform: uppercase; letter-spacing: 1px; }
.bd-tag {
  display: inline-block;
  padding: 5px 14px;
  background: #f1f5f9;
  color: #475569;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s;
}
.bd-tag:hover { background: #1e40af; color: #fff; }

/* Author box */
.bd-author-box {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  background: linear-gradient(135deg, #eff6ff, #f0fdf4);
  border-radius: 16px;
  padding: 28px;
  margin-top: 40px;
  border: 1px solid #dbeafe;
}

.bd-author-box-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1e40af, #3b82f6);
  color: #fff;
  font-size: 1.5rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.bd-author-box-info h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 4px;
}
.bd-author-box-info .role {
  font-size: 0.8rem;
  color: #3b82f6;
  font-weight: 600;
  margin: 0 0 10px;
}
.bd-author-box-info p {
  font-size: 0.875rem;
  color: #64748b;
  line-height: 1.6;
  margin: 0;
}

/* Related posts */
.bd-related {
  margin-top: 48px;
}

.bd-related-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #0f172a;
  margin: 0 0 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.bd-related-title::after {
  content: '';
  flex: 1;
  height: 2px;
  background: #f1f5f9;
  border-radius: 2px;
}

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

.bd-related-card {
  background: #fff;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid #e2e8f0;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
}
.bd-related-card:hover { transform: translateY(-4px); box-shadow: 0 10px 28px rgba(15,23,42,0.1); }

.bd-related-img-wrap { aspect-ratio: 16/10; overflow: hidden; }
.bd-related-img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
.bd-related-card:hover .bd-related-img { transform: scale(1.05); }

.bd-related-body { padding: 16px; }
.bd-related-cat {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: #1e40af;
  margin-bottom: 6px;
  display: block;
}
.bd-related-card-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: #0f172a;
  line-height: 1.4;
  margin: 0 0 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.bd-related-meta {
  font-size: 0.75rem;
  color: #94a3b8;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Sidebar */
.bd-sidebar { display: flex; flex-direction: column; gap: 24px; position: sticky; top: 90px; }

.bd-sidebar-card {
  background: #fff;
  border-radius: 14px;
  padding: 22px;
  box-shadow: 0 2px 10px rgba(15,23,42,0.06);
  border: 1px solid #e2e8f0;
}

.bd-sidebar-title {
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #94a3b8;
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid #f1f5f9;
}

.bd-sidebar-cats { display: flex; flex-direction: column; gap: 4px; }
.bd-sidebar-cat {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 9px 12px;
  border-radius: 8px;
  text-decoration: none;
  color: #334155;
  font-size: 0.86rem;
  font-weight: 500;
  transition: background 0.2s;
}
.bd-sidebar-cat:hover { background: #f1f5f9; }
.bd-sidebar-cat.active { background: #eff6ff; color: #1e40af; font-weight: 600; }
.bd-sidebar-cat-count {
  background: #f1f5f9;
  border-radius: 20px;
  padding: 2px 8px;
  font-size: 0.7rem;
  font-weight: 700;
  color: #64748b;
}

.bd-recent-list { display: flex; flex-direction: column; gap: 14px; }
.bd-recent-item {
  display: flex;
  gap: 12px;
  text-decoration: none;
  align-items: flex-start;
  padding: 8px;
  border-radius: 8px;
  transition: background 0.2s;
}
.bd-recent-item:hover { background: #f8fafc; }
.bd-recent-thumb { width: 56px; height: 46px; border-radius: 8px; object-fit: cover; flex-shrink: 0; }
.bd-recent-text .bd-recent-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: #0f172a;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0 0 4px;
}
.bd-recent-text .bd-recent-date { font-size: 0.72rem; color: #94a3b8; }

.bd-share-card { background: linear-gradient(135deg, #1e3a8a, #1e40af); border: none; }
.bd-share-card .bd-sidebar-title { color: #93c5fd; border-bottom-color: rgba(255,255,255,0.1); }
.bd-share-card p { font-size: 0.84rem; color: #bfdbfe; margin: 0 0 16px; }
.share-btns { display: flex; gap: 10px; flex-wrap: wrap; }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: opacity 0.2s;
}
.share-btn:hover { opacity: 0.85; }
.share-btn.twitter { background: #1da1f2; color: #fff; }
.share-btn.facebook { background: #4267b2; color: #fff; }
.share-btn.whatsapp { background: #25d366; color: #fff; }
.share-btn.copy { background: #f1f5f9; color: #475569; }

/* Responsive */
@media (max-width: 1000px) {
  .bd-body { grid-template-columns: 1fr; }
  .bd-sidebar { position: static; display: grid; grid-template-columns: repeat(2, 1fr); }
  .bd-related-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 700px) {
  .bd-hero { height: 360px; }
  .bd-hero-content { padding: 24px 20px; }
  .bd-hero-title { font-size: 1.5rem; }
  .bd-body { padding: 24px 16px 60px; }
  .bd-article { padding: 24px; }
  .bd-content { font-size: 0.95rem; }
  .bd-related-grid { grid-template-columns: 1fr; }
  .bd-sidebar { grid-template-columns: 1fr; }
}