/* ============================================
   CORE+ — Blog Page Styles (blog.css)
   ============================================ */

.blog-hero {
  padding: calc(var(--space-xl) + 5rem) var(--space-md) var(--space-lg);
  max-width: 1200px;
  margin: 0 auto;
}
.blog-hero-inner { max-width: 640px; }

.blog-filter-bar {
  border-bottom: 1px solid rgba(168,213,188,0.25);
  background: var(--warm-white);
  position: sticky;
  top: 68px;
  z-index: 100;
}
.blog-filter-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  scrollbar-width: none;
}
.blog-filter-inner::-webkit-scrollbar { display: none; }

.filter-btn {
  padding: 0.9rem 1.25rem;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-soft);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--dur-fast);
  margin-bottom: -1px;
}
.filter-btn:hover { color: var(--green-main); }
.filter-btn.active {
  color: var(--green-main);
  border-bottom-color: var(--green-main);
}

.blog-main {
  padding-top: var(--space-lg);
  padding-bottom: var(--space-xl);
}
.blog-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
}

/* Card chung */
.blog-full-card {
  background: var(--warm-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(168,213,188,0.3);
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--dur-mid) var(--ease-smooth);
}
.blog-full-card:hover { box-shadow: var(--shadow-md); }

/* Ảnh */
.blog-full-img-wrap {
  display: block;
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--green-mist);
}
.blog-full-img-wrap img {
  width: 100%; height: 100%;
  object-fit: cover; display: block;
  transition: transform var(--dur-slow) var(--ease-smooth);
}
.blog-full-card:hover .blog-full-img-wrap img { transform: scale(1.04); }
.blog-full-img-ph {
  width: 100%; height: 100%;
  display: none;
  align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--green-mist), var(--green-foam));
  font-size: 3.5rem;
}
.blog-tag {
  position: absolute;
  top: 1rem; left: 1rem;
  background: var(--green-deep);
  color: var(--green-pale);
  font-size: 0.68rem; font-weight: 500;
  letter-spacing: 0.12em; text-transform: uppercase;
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-full);
  z-index: 1;
}

/* Body */
.blog-full-body {
  padding: 2rem 2.25rem 2.25rem;
  display: flex; flex-direction: column; flex: 1;
}
.blog-meta {
  display: flex; align-items: center; gap: 0.5rem;
  margin-bottom: 0.75rem;
}
.blog-date, .blog-read-time {
  font-size: 0.72rem; color: var(--text-muted);
  letter-spacing: 0.06em; text-transform: uppercase;
}
.blog-dot { color: var(--text-muted); font-size: 0.6rem; }
.blog-full-title {
  font-family: var(--font-display);
  font-size: 1.55rem; font-weight: 500;
  color: var(--text-dark); line-height: 1.3;
  margin-bottom: 1.25rem;
}
.blog-content {
  flex: 1; font-size: 0.92rem;
  color: var(--text-mid); line-height: 1.8;
}
.blog-content p { margin-bottom: 0.9rem; }
.blog-content ul { list-style: none; padding: 0; margin: 0.5rem 0 1rem; display: flex; flex-direction: column; gap: 0.4rem; }
.blog-content strong { color: var(--text-dark); font-weight: 500; }

/* Footer card */
.blog-full-footer {
  margin-top: 1.75rem; padding-top: 1.25rem;
  border-top: 1px solid rgba(168,213,188,0.25);
  display: flex; align-items: center;
  justify-content: space-between; gap: 1rem; flex-wrap: wrap;
}
.blog-fb-btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.8rem; font-weight: 500;
  color: var(--green-main);
  background: var(--green-foam);
  border: 1px solid var(--green-mist);
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-full);
  transition: all var(--dur-fast);
}
.blog-fb-btn:hover { background: var(--green-mist); color: var(--green-mid); }
.blog-tags-list { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.blog-tag-pill {
  font-size: 0.72rem; color: var(--text-muted);
  background: var(--cream);
  border: 1px solid rgba(168,213,188,0.3);
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius-full);
}

/* FB Embed */
.blog-fb-embed {
  margin-top: 1rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #f0f2f5;
  display: flex;
  justify-content: center;
}
.blog-fb-embed iframe {
  display: block;
  max-width: 100%;
}
/* Reel: căn giữa video dọc */
.blog-fb-reel {
  justify-content: center;
  background: #000;
  border-radius: var(--radius-md);
  min-height: 480px;
  align-items: center;
}

/* Empty / CTA */
.blog-empty { text-align: center; padding: var(--space-lg); color: var(--text-soft); }
.blog-cta-section {
  background: var(--green-foam);
  border-top: 1px solid rgba(168,213,188,0.3);
  padding: var(--space-xl) var(--space-md);
  text-align: center;
}
.blog-cta-inner {
  max-width: 560px; margin: 0 auto;
  display: flex; flex-direction: column; align-items: center;
}

.nav-active { color: var(--green-main) !important; }
.nav-active::after { transform: scaleX(1) !important; }

@media (max-width: 900px) {
  .blog-grid { grid-template-columns: 1fr; }
  .blog-full-body { padding: 1.5rem; }
  .blog-full-title { font-size: 1.35rem; }
}
@media (max-width: 768px) {
  .blog-hero { padding-top: calc(var(--space-lg) + 4rem); }
  .blog-full-footer { flex-direction: column; align-items: flex-start; }
}

/* ── Blog Preview Section (index.html) ─────── */
.blog-preview-section { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }
.blog-preview-header {
  display: flex; justify-content: space-between;
  align-items: flex-end; margin-bottom: 3rem; gap: 1.5rem;
}
.blog-preview-header h2 { margin-top: 0.5rem; }

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

/* Card preview */
.blog-card {
  background: var(--warm-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(168,213,188,0.3);
  transition: transform var(--dur-mid) var(--ease-smooth), box-shadow var(--dur-mid) var(--ease-smooth);
  display: flex; flex-direction: column;
}
.blog-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.blog-card-img-wrap {
  position: relative; display: block;
  aspect-ratio: 16/9; overflow: hidden;
  background: var(--green-mist);
}
.blog-card-img-wrap img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  transition: transform var(--dur-slow) var(--ease-smooth);
}
.blog-card:hover .blog-card-img-wrap img { transform: scale(1.04); }
.blog-card-img-placeholder {
  width: 100%; height: 100%; display: flex;
  align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--green-mist), var(--green-foam));
  font-size: 3rem;
}

/* Card embed preview — nhúng FB iframe thu nhỏ */
.blog-card-embed {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #f0f2f5;
  position: relative;
  pointer-events: none; /* không click được trên preview */
}
.blog-card-embed iframe {
  width: 200%;
  height: 200%;
  transform: scale(0.5);
  transform-origin: top left;
  pointer-events: none;
}
.blog-card-embed-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  cursor: pointer;
}

.blog-card-body {
  padding: 1.75rem 2rem 2rem;
  display: flex; flex-direction: column; flex: 1;
}
.blog-date { font-size: 0.72rem; color: var(--text-muted); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 0.6rem; }
.blog-card-title {
  font-family: var(--font-display);
  font-size: 1.55rem; font-weight: 500;
  color: var(--text-dark); line-height: 1.3; margin-bottom: 0.85rem;
}
.blog-card-title a { color: inherit; transition: color var(--dur-fast); }
.blog-card-title a:hover { color: var(--green-main); }
.blog-excerpt {
  font-size: 0.88rem; color: var(--text-soft); line-height: 1.75;
  margin-bottom: 1.25rem; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.blog-card-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 1rem; border-top: 1px solid rgba(168,213,188,0.25);
}
.blog-fb-link {
  display: flex; align-items: center; gap: 0.35rem;
  font-size: 0.75rem; color: var(--text-muted);
  transition: color var(--dur-fast);
}
.blog-fb-link:hover { color: var(--green-main); }

@media (max-width: 768px) {
  .blog-preview-grid { grid-template-columns: 1fr; }
  .blog-preview-header { flex-direction: column; align-items: flex-start; }
  .blog-card-body { padding: 1.25rem; }
  .blog-card-title { font-size: 1.25rem; }
}