/* ============================================================
   BLOG.CSS — BangDinhNhom Theme
   Blog Grid | News Cards | Sidebar | Single Post
   ============================================================ */

/* ── BLOG ARCHIVE ─────────────────────────────────────────── */
.blog-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 2.5rem;
  padding: 3rem 0;
}

.blog-main {}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.blog-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: var(--color-text);
  transition: box-shadow .25s, transform .25s;
  display: block;
}

.blog-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

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

.blog-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s;
  display: block;
}

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

.blog-card-body { padding: 1.25rem; }

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: .75rem;
  flex-wrap: wrap;
}

.blog-card-category {
  font-size: .68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--color-primary);
  background: var(--color-primary-bg);
  padding: .2rem .6rem;
  border-radius: 100px;
  text-decoration: none;
}

.blog-card-date {
  font-size: .75rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: .25rem;
}

.blog-card-date svg { width: 12px; height: 12px; }

.blog-card-read-time {
  font-size: .72rem;
  color: var(--color-text-muted);
  margin-left: auto;
}

.blog-card-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.35;
  margin-bottom: .75rem;
  transition: color .2s;
}

.blog-card:hover .blog-card-title { color: var(--color-primary); }

.blog-card-excerpt {
  font-size: .84rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.blog-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: .75rem;
  border-top: 1px solid var(--color-border);
}

.blog-card-author {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .78rem;
  color: var(--color-text-muted);
}

.blog-card-author-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .7rem;
  font-weight: 700;
  color: #fff;
}

.blog-read-more {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  font-size: .78rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  transition: gap .2s;
}

.blog-read-more:hover { gap: .5rem; }
.blog-read-more svg { width: 13px; height: 13px; }

/* ── BLOG SIDEBAR ─────────────────────────────────────────── */
.blog-sidebar {
  position: sticky;
  top: calc(68px + 1rem);
  align-self: start;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
}

.sidebar-widget {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.sidebar-widget:last-child { margin-bottom: 0; }

.sidebar-widget-title {
  font-family: var(--font-display);
  font-size: .82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--color-text);
  padding: .9rem 1.1rem;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: .5rem;
}

.sidebar-widget-title svg {
  width: 15px;
  height: 15px;
  color: var(--color-primary);
}

.sidebar-widget-body { padding: 1rem; }

/* Recent posts widget */
.sidebar-post-item {
  display: flex;
  gap: .75rem;
  padding: .6rem 0;
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  color: var(--color-text);
  transition: color .2s;
}

.sidebar-post-item:last-child { border-bottom: none; padding-bottom: 0; }
.sidebar-post-item:first-child { padding-top: 0; }

.sidebar-post-item:hover .sidebar-post-title { color: var(--color-primary); }

.sidebar-post-thumb {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-bg);
}

.sidebar-post-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sidebar-post-info { flex: 1; min-width: 0; }

.sidebar-post-title {
  font-size: .82rem;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: .25rem;
  transition: color .2s;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.sidebar-post-date {
  font-size: .7rem;
  color: var(--color-text-muted);
}

/* Categories widget */
.sidebar-cat-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .5rem 0;
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  color: var(--color-text);
  font-size: .85rem;
  font-weight: 500;
  transition: color .2s, padding-left .2s;
}

.sidebar-cat-item:last-child { border-bottom: none; }
.sidebar-cat-item:first-child { padding-top: 0; }
.sidebar-cat-item:hover { color: var(--color-primary); padding-left: .35rem; }

.sidebar-cat-count {
  font-size: .72rem;
  background: var(--color-bg);
  padding: .1rem .5rem;
  border-radius: 100px;
  color: var(--color-text-muted);
}

/* Tags widget */
.sidebar-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
}

.sidebar-tag {
  display: inline-block;
  padding: .3rem .65rem;
  font-size: .73rem;
  font-weight: 600;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: background .2s, color .2s, border-color .2s;
}

.sidebar-tag:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* CTA widget */
.sidebar-cta-widget {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.sidebar-cta-widget .sidebar-widget-body {
  text-align: center;
  padding: 1.25rem;
}

.sidebar-cta-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255,255,255,.15);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto .75rem;
}

.sidebar-cta-icon svg {
  width: 22px;
  height: 22px;
  color: var(--color-accent);
}

.sidebar-cta-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: .4rem;
}

.sidebar-cta-desc {
  font-size: .8rem;
  color: rgba(255,255,255,.7);
  margin-bottom: 1rem;
  line-height: 1.5;
}

.sidebar-cta-btn {
  display: block;
  padding: .65rem 1rem;
  background: var(--color-accent);
  color: #fff;
  font-weight: 700;
  font-size: .85rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: background .2s;
}

.sidebar-cta-btn:hover { background: #e65100; color: #fff; }

/* ── SINGLE POST ──────────────────────────────────────────── */
.single-post-header {
  background: var(--color-primary-dark);
  padding: 3rem 0;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.single-post-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

.single-post-header-inner { position: relative; z-index: 1; }

.single-post-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.single-post-category {
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: #fff;
  background: rgba(255,152,0,.25);
  border: 1px solid rgba(255,152,0,.4);
  padding: .25rem .7rem;
  border-radius: 100px;
  text-decoration: none;
}

.single-post-date,
.single-post-author {
  font-size: .8rem;
  color: rgba(255,255,255,.65);
  display: flex;
  align-items: center;
  gap: .3rem;
}

.single-post-date svg,
.single-post-author svg { width: 13px; height: 13px; }

.single-post-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: .75rem;
}

.single-post-excerpt {
  font-size: 1rem;
  color: rgba(255,255,255,.75);
  line-height: 1.6;
  max-width: 680px;
}

/* Post content */
.single-post-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 2.5rem;
  padding: 3rem 0;
}

.post-featured-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 2rem;
  aspect-ratio: 16/9;
}

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

.post-content {
  font-size: .95rem;
  line-height: 1.75;
  color: var(--color-text);
}

.post-content h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--color-primary);
  margin: 2rem 0 1rem;
  padding-bottom: .5rem;
  border-bottom: 2px solid var(--color-border);
}

.post-content h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 1.5rem 0 .75rem;
}

.post-content p { margin-bottom: 1.25rem; }

.post-content ul, .post-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
}

.post-content li { margin-bottom: .4rem; }

.post-content strong { color: var(--color-text); font-weight: 700; }

.post-content a { color: var(--color-primary); text-decoration: underline; }
.post-content a:hover { text-decoration: none; }

.post-content blockquote {
  margin: 1.5rem 0;
  padding: 1.25rem 1.5rem;
  background: var(--color-primary-bg);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--color-primary);
}

.post-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: 1rem 0;
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.25rem;
  font-size: .88rem;
}

.post-content table th,
.post-content table td {
  padding: .6rem .9rem;
  border: 1px solid var(--color-border);
  text-align: left;
}

.post-content table th {
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
}

.post-content table tr:nth-child(even) td { background: var(--color-bg); }

/* Post tags */
.post-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.post-tags-label {
  font-size: .8rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: .06em;
  flex-shrink: 0;
}

/* ── RESPONSIVE BLOG ─────────────────────────────────────── */
@media (max-width: 1024px) {
  .blog-layout,
  .single-post-layout { grid-template-columns: 1fr; }
  .blog-sidebar { position: static; max-height: none; }
}

@media (max-width: 768px) {
  .blog-grid { grid-template-columns: 1fr; }
}