/* ============================================================
   BLOG — index + single post
   Palette: dark #1a1a1a / gold #d4af37  (đồng nhất với homepage)
   ============================================================ */

/* ── Navbar overlap (hero nằm phía sau navbar) ──────────────── */
body.page-blog #main-content,
body.page-blog-single #main-content { padding-top: 0; }

/* ── Breadcrumb ─────────────────────────────────────────────── */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  font-size: .8rem;
  color: rgba(255,255,255,.6);
  margin-bottom: var(--sp-md);
}
.breadcrumb a { color: rgba(255,255,255,.6); text-decoration: none; }
.breadcrumb a:hover { color: var(--gold-primary); }
.breadcrumb--light { color: rgba(255,255,255,.75); }
.breadcrumb--light a { color: rgba(255,255,255,.75); }
.breadcrumb--light .breadcrumb-sep { color: rgba(255,255,255,.4); }
.breadcrumb--light span:last-child { color: #fff; }
.breadcrumb-sep { color: rgba(255,255,255,.35); user-select: none; }

/* ============================================================
   INDEX PAGE
   ============================================================ */

/* ── Hero ───────────────────────────────────────────────────── */
.bl-hero {
  background: linear-gradient(135deg, #0a0f0a 0%, #1a1a1a 60%, #121a12 100%);
  padding: 120px 0 64px;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.bl-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 100% 50%, rgba(212,175,55,.06) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 0% 30%, rgba(255,255,255,.02) 0%, transparent 60%);
  pointer-events: none;
}
.bl-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(212,175,55,.25), transparent);
}
.bl-hero-inner { max-width: 720px; }
.bl-hero .section-label {
  color: var(--gold-primary);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.bl-hero-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  color: #fff;
  margin: 0 0 16px;
}
.bl-hero-sub {
  font-size: 1rem;
  line-height: 1.75;
  color: rgba(255,255,255,.7);
  max-width: 600px;
  margin: 0;
}

/* ── Category pills row ─────────────────────────────────────── */
.bl-cat-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: var(--sp-lg);
}
.bl-cat-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 7px 18px;
  border-radius: 0;
  border: 1.5px solid var(--border-color);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--mid-gray);
  text-decoration: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.bl-cat-pill:hover {
  border-color: var(--dark);
  background: var(--dark);
  color: #fff;
}
.bl-cat-pill.active {
  border-color: var(--dark);
  background: var(--dark);
  color: var(--gold-primary);
}

/* ── Main content section ───────────────────────────────────── */
.bl-main { padding-top: 64px; }

/* ── Main layout (content + sidebar) ───────────────────────── */
.bl-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 48px;
  align-items: flex-start;
}

/* ── Posts grid ─────────────────────────────────────────────── */
.bl-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.bl-grid .bl-card--featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}
.bl-grid .bl-card--featured .bl-card-img-wrap {
  height: 100%;
  min-height: 260px;
  aspect-ratio: unset;
}

/* ── Post card ──────────────────────────────────────────────── */
.bl-card {
  background: var(--white);
  border-radius: 0;
  border: 1px solid var(--border-color);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}
.bl-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.bl-card-img-wrap {
  display: block;
  aspect-ratio: 16/9;
  overflow: hidden;
  position: relative;
  flex-shrink: 0;
  background: linear-gradient(135deg, #111 0%, #1e1e1e 50%, #141a12 100%);
}
.bl-card-img-wrap--empty::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 60% at 50% 40%, rgba(212,175,55,.07) 0%, transparent 70%);
}
.bl-card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .45s ease;
}
.bl-card:hover .bl-card-img-wrap img { transform: scale(1.05); }
.bl-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,.18) 0%, transparent 60%);
  pointer-events: none;
}
.bl-card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 8px;
}
.bl-card-cat {
  font-size: .68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--gold-dark);
  background: rgba(212,175,55,.1);
  padding: 3px 10px;
  border-radius: 0;
  border-left: 2px solid var(--gold-primary);
  width: fit-content;
}
.bl-card-title {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.45;
  margin: 0;
  color: var(--charcoal);
}
.bl-card--featured .bl-card-title { font-size: 1.2rem; }
.bl-card-title a { text-decoration: none; color: inherit; }
.bl-card-title a:hover { color: var(--gold-dark); }
.bl-card-excerpt {
  font-size: .875rem;
  line-height: 1.65;
  color: var(--mid-gray);
  margin: 0;
  flex: 1;
}
.bl-card-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: auto;
  padding-top: 8px;
  border-top: 1px solid var(--light-gray);
}
.bl-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: .75rem;
  color: var(--mid-gray);
}
.bl-read-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--charcoal);
  text-decoration: none;
  margin-left: auto;
  transition: gap var(--transition-fast), color var(--transition-fast);
}
.bl-read-more:hover { gap: 8px; color: var(--gold-dark); }

/* ── Empty state ────────────────────────────────────────────── */
.bl-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 80px 20px;
  color: var(--mid-gray);
  text-align: center;
}
.bl-empty svg { opacity: .35; }

/* ── Pagination ─────────────────────────────────────────────── */
.bl-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 48px;
  flex-wrap: wrap;
}
.bl-page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 38px;
  padding: 0 6px;
  border-radius: 0;
  border: 1.5px solid var(--border-color);
  background: var(--white);
  font-size: .875rem;
  font-weight: 600;
  color: var(--charcoal);
  text-decoration: none;
  transition: all var(--transition-fast);
}
.bl-page-btn:hover { border-color: var(--dark); color: var(--dark); background: var(--light-gray); }
.bl-page-btn.active {
  background: var(--dark);
  border-color: var(--dark);
  color: var(--gold-primary);
}
.bl-page-ellipsis {
  width: 38px;
  text-align: center;
  color: var(--mid-gray);
  user-select: none;
}

/* ── Sidebar ────────────────────────────────────────────────── */
.bl-sidebar { display: flex; flex-direction: column; gap: 24px; position: sticky; top: 88px; }
.bl-widget {
  background: var(--white);
  border: 1px solid var(--border-color);
  border-radius: 0;
  padding: 20px;
}
.bl-widget-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--charcoal);
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--light-gray);
}
.bl-widget-title svg { color: var(--gold-primary); flex-shrink: 0; }

/* Search widget */
.bl-search-form {
  display: flex;
  border: 1.5px solid var(--border-color);
  border-radius: 0;
  overflow: hidden;
  transition: border-color var(--transition-fast);
}
.bl-search-form:focus-within { border-color: var(--dark); }
.bl-search-input {
  flex: 1;
  border: none;
  outline: none;
  padding: 10px 14px;
  font-size: .875rem;
  background: transparent;
  min-width: 0;
}
.bl-search-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  flex-shrink: 0;
  background: var(--dark);
  border: none;
  color: var(--gold-primary);
  cursor: pointer;
  transition: background var(--transition-fast);
}
.bl-search-btn:hover { background: var(--charcoal); }

/* Categories list */
.bl-cat-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }
.bl-cat-list-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 0;
  font-size: .875rem;
  color: var(--charcoal);
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.bl-cat-list-item:hover,
.bl-cat-list-item.active {
  background: rgba(26,26,26,.05);
  color: var(--dark);
}
.bl-cat-list-item.active {
  border-left: 2px solid var(--gold-primary);
  padding-left: 8px;
}
.bl-cat-arrow { margin-left: auto; color: var(--mid-gray); opacity: .5; }

/* Popular posts */
.bl-popular-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.bl-popular-item { display: flex; align-items: flex-start; gap: 10px; }
.bl-popular-rank {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 24px;
  border-radius: 0;
  background: var(--dark);
  color: var(--gold-primary);
  font-size: .7rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}
.bl-popular-body { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.bl-popular-title {
  font-size: .8rem;
  font-weight: 600;
  color: var(--charcoal);
  text-decoration: none;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.bl-popular-title:hover { color: var(--gold-dark); }
.bl-popular-date { font-size: .7rem; color: var(--mid-gray); }

/* CTA widget */
.bl-widget--cta {
  background: linear-gradient(135deg, #0a0f0a 0%, #1a1a1a 100%);
  border-color: transparent;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.bl-widget--cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 100% 0%, rgba(212,175,55,.1) 0%, transparent 60%);
  pointer-events: none;
}
.bl-cta-badge {
  font-size: .65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--gold-primary);
  margin-bottom: 8px;
}
.bl-cta-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.25;
  margin: 0 0 10px;
}
.bl-cta-sub {
  font-size: .8rem;
  color: rgba(255,255,255,.7);
  line-height: 1.6;
  margin: 0 0 16px;
}

/* ============================================================
   SINGLE POST PAGE
   ============================================================ */

/* ── Hero ───────────────────────────────────────────────────── */
.bs-hero {
  position: relative;
  min-height: 480px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}
.bs-hero-img {
  position: absolute;
  inset: 0;
}
.bs-hero-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.bs-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,.75) 0%, rgba(0,0,0,.35) 55%, rgba(0,0,0,.15) 100%);
}
.bs-hero-placeholder {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #0a0f0a 0%, #1a1a1a 60%, #121a12 100%);
}
.bs-hero-content {
  position: relative;
  z-index: 1;
  padding-top: 72px;
  padding-bottom: 56px;
  width: 100%;
}
.bs-title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.25;
  margin: 0 0 20px;
  max-width: 800px;
}
.bs-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.bs-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: .8rem;
  color: rgba(255,255,255,.8);
}

/* ── Main content section ───────────────────────────────────── */
.bs-main { padding-top: 64px; }

/* ── Main layout ────────────────────────────────────────────── */
.bs-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 48px;
  align-items: flex-start;
}
.bs-sidebar { display: flex; flex-direction: column; gap: 24px; position: sticky; top: 88px; }

/* ── Article ────────────────────────────────────────────────── */
.bs-article {
  min-width: 0;
}

/* Social share */
.bs-share {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--light-gray);
}
.bs-share--bottom {
  margin-bottom: 0;
  margin-top: 32px;
  padding-bottom: 0;
  padding-top: 24px;
  border-bottom: none;
  border-top: 1px solid var(--light-gray);
}
.bs-share-label { font-size: .78rem; font-weight: 600; color: var(--mid-gray); margin-right: 4px; }
.bs-share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 0;
  border: 1.5px solid var(--border-color);
  background: var(--white);
  font-size: .78rem;
  font-weight: 600;
  color: var(--charcoal);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.bs-share-btn:hover { border-color: currentColor; }
.bs-share-fb { color: #1877f2; }
.bs-share-fb:hover { background: #1877f2; color: #fff; border-color: #1877f2; }
.bs-share-tw { color: #000; }
.bs-share-tw:hover { background: #000; color: #fff; border-color: #000; }
.bs-share-li { color: #0a66c2; }
.bs-share-li:hover { background: #0a66c2; color: #fff; border-color: #0a66c2; }
.bs-share-copy { font-family: inherit; }
.bs-share-copy:hover { border-color: var(--gold-primary); color: var(--gold-dark); }

/* Table of Contents */
.bs-toc {
  background: var(--off-white);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--gold-primary);
  border-radius: 0;
  padding: 16px 20px;
  margin-bottom: 32px;
}
.bs-toc-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--charcoal);
}
.bs-toc-header svg { color: var(--gold-primary); }
.bs-toc-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border: none;
  background: transparent;
  cursor: pointer;
  margin-left: auto;
  color: var(--mid-gray);
  transition: transform var(--transition-fast);
}
.bs-toc-list {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.bs-toc-item a {
  display: block;
  font-size: .83rem;
  line-height: 1.5;
  color: var(--mid-gray);
  text-decoration: none;
  padding: 3px 6px;
  border-radius: 0;
  border-left: 2px solid transparent;
  transition: all var(--transition-fast);
}
.bs-toc-item a:hover,
.bs-toc-item a.active {
  background: rgba(212,175,55,.08);
  color: var(--charcoal);
  border-left-color: var(--gold-primary);
}
.bs-toc-h3 > a { padding-left: 20px; }

/* Article body content */
.bs-content {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--charcoal);
}
.bs-content h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--dark);
  margin: 40px 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--gold-primary);
  scroll-margin-top: 100px;
}
.bs-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--charcoal);
  margin: 28px 0 12px;
  scroll-margin-top: 100px;
}
.bs-content p { margin: 0 0 18px; }
.bs-content ul,
.bs-content ol { margin: 0 0 18px 24px; }
.bs-content li { margin-bottom: 6px; }
.bs-content blockquote {
  margin: 28px 0;
  padding: 16px 20px 16px 24px;
  border-left: 4px solid var(--gold-primary);
  background: rgba(212,175,55,.06);
  border-radius: 0;
  font-style: italic;
  color: var(--mid-gray);
}
.bs-content img {
  max-width: 100%;
  height: auto;
  border-radius: 0;
  margin: 16px 0;
  display: block;
}
.bs-content a {
  color: var(--gold-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.bs-content a:hover { color: var(--dark); }
.bs-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: .9rem;
}
.bs-content th,
.bs-content td {
  padding: 10px 14px;
  border: 1px solid var(--border-color);
  text-align: left;
}
.bs-content th {
  background: var(--dark);
  color: var(--gold-primary);
  font-weight: 600;
}
.bs-content tr:nth-child(even) td { background: var(--off-white); }
.bs-content pre {
  background: #1e1e1e;
  color: #d4d4d4;
  padding: 16px 20px;
  border-radius: 0;
  overflow-x: auto;
  font-size: .875rem;
  margin: 20px 0;
}

/* Tags */
.bs-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--light-gray);
}
.bs-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 0;
  background: var(--off-white);
  border: 1px solid var(--border-color);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--mid-gray);
  text-decoration: none;
  transition: all var(--transition-fast);
}
.bs-tag:hover {
  background: var(--dark);
  border-color: var(--dark);
  color: var(--gold-primary);
}

/* ── Quick contact form in sidebar ─────────────────────────── */
.bs-contact-widget {
  background: linear-gradient(135deg, #0a0f0a 0%, #1a1a1a 100%);
  border-color: transparent;
}
.bs-contact-widget .bl-widget-title { color: #fff; border-bottom-color: rgba(255,255,255,.15); }
.bs-contact-widget .bl-widget-title svg { color: var(--gold-primary); }
.bs-contact-sub {
  font-size: .8rem;
  color: rgba(255,255,255,.75);
  line-height: 1.6;
  margin: 0 0 16px;
}
.bs-contact-form .form-control {
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.2);
  color: #fff;
}
.bs-contact-form .form-control::placeholder { color: rgba(255,255,255,.5); }
.bs-contact-form .form-control:focus {
  border-color: var(--gold-primary);
  background: rgba(255,255,255,.15);
  box-shadow: 0 0 0 3px rgba(212,175,55,.2);
  outline: none;
}
.bs-contact-form .form-group { margin-bottom: 10px; }

/* ── Related posts ──────────────────────────────────────────── */
.bs-related {
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--light-gray);
}
.bs-related-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--charcoal);
  margin: 0 0 32px;
  padding-left: 14px;
  border-left: 4px solid var(--gold-primary);
}
.bs-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1100px) {
  .bl-layout,
  .bs-layout { grid-template-columns: 1fr; }
  .bl-sidebar,
  .bs-sidebar { position: static; }
  .bl-sidebar { order: -1; }
  .bl-grid { grid-template-columns: repeat(2, 1fr); }
  .bl-grid .bl-card--featured { grid-column: 1 / -1; grid-template-columns: 1fr; }
  .bl-grid .bl-card--featured .bl-card-img-wrap { height: 260px; }
}

@media (max-width: 900px) {
  .bl-grid { grid-template-columns: 1fr; }
  .bs-related-grid { grid-template-columns: repeat(2, 1fr); }
  .bs-hero { min-height: 380px; }
}

@media (max-width: 640px) {
  .bl-hero { padding: 96px 0 48px; }
  .bl-hero-title { font-size: 1.7rem; }
  .bs-title { font-size: 1.4rem; }
  .bs-related-grid { grid-template-columns: 1fr; }
  .bl-cat-pills { overflow-x: auto; flex-wrap: nowrap; padding-bottom: 4px; }
  .bl-pagination { gap: 4px; }
  .bs-share { gap: 6px; }
  .bs-share-btn { padding: 5px 10px; font-size: .72rem; }
}