/* =============================================
   AAU — BLOG LISTING (cask-inspired)
   ============================================= */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@500;600;700;800&family=Be+Vietnam+Pro:wght@400;500;600;700&display=swap');

:root {
  --bl-primary: #1b2a4a;
  --bl-primary-deep: #0f1b33;
  --bl-accent: #c5a880;
  --bl-accent-dark: #a68b3c;
  --bl-accent-mist: #f5f0e8;
  --bl-text: #1f2937;
  --bl-text-muted: #6b7280;
  --bl-border: #e5e7eb;
  --bl-bg: #f9fafb;
  --bl-white: #ffffff;
  --bl-chip-bg: #f3f4f6;
  --bl-radius: 12px;
}

.aau-blog {
  background: var(--bl-bg);
  font-family: 'Be Vietnam Pro', 'Inter', sans-serif;
  color: var(--bl-text);
}

.aau-blog__wrap {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* === Hero === */
.aau-blog__hero {
  background: linear-gradient(135deg, var(--bl-primary) 0%, var(--bl-primary-deep) 100%);
  padding: 36px 24px 28px;
  text-align: center;
}
.aau-blog__hero-inner {
  max-width: 1240px;
  margin: 0 auto;
}
.aau-blog__title {
  font-family: 'Montserrat', sans-serif;
  font-size: 30px;
  font-weight: 800;
  color: var(--bl-white);
  margin: 0 0 8px;
  letter-spacing: -0.5px;
}
.aau-blog__subtitle {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.72);
  margin: 0 0 22px;
}

/* === Toolbar (search + categories) === */
.aau-blog__toolbar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.aau-blog__search {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 22px;
  color: rgba(255, 255, 255, 0.7);
  width: 320px;
  max-width: 100%;
}
.aau-blog__search-input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--bl-white);
  font-size: 13px;
  font-family: inherit;
  flex: 1;
}
.aau-blog__search-input::placeholder {
  color: rgba(255, 255, 255, 0.55);
}

.aau-blog__cats {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
}
.aau-blog__cats {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  max-width: 920px;
  margin: 0 auto;
}
.aau-blog__cat-btn {
  --cat-cc: #c5a880;
  font-family: 'Montserrat', sans-serif;
  padding: 5px 13px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.85);
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
  white-space: nowrap;
}
.aau-blog__cat-btn:hover {
  background: rgba(255, 255, 255, 0.18);
  color: var(--bl-white);
  border-color: rgba(255, 255, 255, 0.3);
}
.aau-blog__cat-btn.is-active {
  background: var(--cat-cc);
  border-color: var(--cat-cc);
  color: var(--bl-white);
}
.aau-blog__cat-count {
  font-weight: 400;
  opacity: 0.7;
  font-size: 11px;
}

/* === Featured post === */
.aau-blog__featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: var(--bl-white);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  text-decoration: none;
  color: inherit;
  margin: 28px 0 32px;
  transition: transform 0.3s, box-shadow 0.3s;
}
.aau-blog__featured:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
}
.aau-blog__featured-img {
  position: relative;
  min-height: 300px;
  overflow: hidden;
}
.aau-blog__featured-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.aau-blog__featured:hover .aau-blog__featured-img img {
  transform: scale(1.04);
}
.aau-blog__featured-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--bl-accent), var(--bl-accent-dark));
}
.aau-blog__featured-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 6px 14px;
  background: var(--bl-accent);
  color: var(--bl-white);
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  border-radius: 20px;
}
.aau-blog__featured-body {
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.aau-blog__featured-eyebrow {
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--bl-accent-dark);
  margin: 0 0 10px;
}
.aau-blog__featured-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 22px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--bl-primary);
  margin: 0 0 12px;
}
.aau-blog__featured-excerpt {
  font-size: 14.5px;
  color: var(--bl-text-muted);
  line-height: 1.6;
  margin: 0 0 16px;
}
.aau-blog__featured-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--bl-text-muted);
  margin: 0 0 16px;
}
.aau-blog__meta-sep {
  opacity: 0.5;
}
.aau-blog__featured-cta {
  font-family: 'Montserrat', sans-serif;
  font-size: 13px;
  font-weight: 700;
  color: var(--bl-accent-dark);
}

/* === Grid === */
.aau-blog__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  margin: 0 0 48px;
}

/* === Card === */
.aau-blog__card {
  background: var(--bl-white);
  border-radius: var(--bl-radius);
  overflow: hidden;
  border: 1px solid var(--bl-border);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}
.aau-blog__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.10);
  border-color: var(--bl-accent);
}
.aau-blog__card-img {
  position: relative;
  height: 200px;
  overflow: hidden;
  background: var(--bl-accent-mist);
}
.aau-blog__card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.aau-blog__card:hover .aau-blog__card-img img {
  transform: scale(1.04);
}
.aau-blog__card-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bl-accent-mist);
}
.aau-blog__card-placeholder span {
  font-family: 'Montserrat', sans-serif;
  font-size: 56px;
  font-weight: 800;
  color: var(--bl-accent);
  opacity: 0.6;
}

.aau-blog__card-body {
  padding: 18px 20px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.aau-blog__card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.aau-blog__card-badge {
  display: inline-block;
  padding: 3px 10px;
  background: var(--bl-accent-mist);
  color: var(--bl-accent-dark);
  font-family: 'Montserrat', sans-serif;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  border-radius: 4px;
}
.aau-blog__card-date {
  font-size: 12px;
  color: var(--bl-text-muted);
  font-weight: 500;
}
.aau-blog__card-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--bl-primary);
  margin: 0 0 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 44px;
}
.aau-blog__card-excerpt {
  font-size: 13px;
  color: var(--bl-text-muted);
  line-height: 1.55;
  margin: 0 0 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.aau-blog__card-link {
  font-family: 'Montserrat', sans-serif;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--bl-accent-dark);
  margin-top: auto;
}

/* === Newsletter block === */
.aau-blog__newsletter {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, #f8f1e8, #f0e4d1, #e8d5b8);
  border-radius: 20px;
  padding: 36px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.aau-blog__newsletter-eyebrow {
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--bl-accent-dark);
}
.aau-blog__newsletter-title {
  font-family: 'Montserrat', sans-serif;
  font-size: 22px;
  font-weight: 800;
  color: var(--bl-primary);
  margin: 6px 0 6px;
}
.aau-blog__newsletter-desc {
  font-size: 14px;
  color: var(--bl-text-muted);
  margin: 0;
  max-width: 480px;
}
.aau-blog__newsletter-btn {
  font-family: 'Montserrat', sans-serif;
  padding: 14px 26px;
  background: var(--bl-primary);
  color: var(--bl-white);
  border-radius: 28px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.3px;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s, transform 0.2s;
}
.aau-blog__newsletter-btn:hover {
  background: var(--bl-accent);
  transform: translateY(-2px);
}

/* === Pagination === */
.aau-blog__pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin: 0 0 64px;
}
.aau-blog__page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 12px;
  border-radius: 6px;
  font-family: 'Montserrat', sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: var(--bl-text);
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}
.aau-blog__page-btn:hover {
  background: var(--bl-chip-bg);
}
.aau-blog__page-btn.is-current {
  background: var(--bl-accent);
  color: var(--bl-white);
}
.aau-blog__page-btn--gap {
  color: var(--bl-text-muted);
  cursor: default;
}
.aau-blog__page-btn--arrow {
  font-weight: 700;
}

/* =============================================
   RELATED ARTICLES section (cho course detail pages)
   ============================================= */
.aau-rel {
  background: var(--bl-bg);
  padding: 64px 0 56px;
  border-top: 1px solid var(--bl-border);
}
.aau-rel__wrap {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}
.aau-rel__head {
  text-align: center;
  margin-bottom: 32px;
}
.aau-rel__eyebrow {
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--bl-accent-dark);
  margin: 0 0 8px;
  text-transform: uppercase;
}
.aau-rel__heading {
  font-family: 'Montserrat', sans-serif;
  font-size: 28px;
  font-weight: 800;
  color: var(--bl-primary);
  margin: 0;
  letter-spacing: -0.5px;
}
.aau-rel__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}
.aau-rel__cta-wrap {
  text-align: center;
}
.aau-rel__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: transparent;
  color: var(--bl-accent-dark);
  border: 2px solid var(--bl-accent);
  border-radius: 28px;
  font-family: 'Montserrat', sans-serif;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: background .2s, color .2s, transform .2s;
}
.aau-rel__cta:hover {
  background: var(--bl-accent);
  color: var(--bl-white);
  transform: translateY(-2px);
}

@media (max-width: 640px) {
  .aau-rel { padding: 44px 0 40px; }
  .aau-rel__heading { font-size: 22px; }
  .aau-rel__wrap { padding: 0 16px; }
}

/* === Responsive === */
@media (max-width: 900px) {
  .aau-blog__featured {
    grid-template-columns: 1fr;
  }
  .aau-blog__featured-img { min-height: 220px; }
  .aau-blog__featured-body { padding: 24px 22px; }
  .aau-blog__featured-title { font-size: 19px; }
  .aau-blog__title { font-size: 24px; }
}

@media (max-width: 640px) {
  .aau-blog__hero { padding: 28px 16px 22px; }
  .aau-blog__title { font-size: 22px; }
  .aau-blog__subtitle { font-size: 13px; }
  .aau-blog__wrap { padding: 0 16px; }
  .aau-blog__grid { gap: 18px; }
  .aau-blog__newsletter {
    padding: 28px 24px;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
  }
  .aau-blog__newsletter-title { font-size: 18px; }
  .aau-blog__pagination { margin-bottom: 40px; }
}