/*
 * DHTD Child — blog.css
 * Task 5 (31/08/2026): trang danh sách Blog "Kiến thức & Góc nhìn" (Posts page).
 * Chỉ nạp trên is_home() (xem điều kiện trong inc/enqueue.php) — không kéo
 * theo các trang khác. Độc lập với home.css/catalog.css (cùng convention
 * "mỗi họ trang tự định nghĩa lại class page-head/card riêng" đã dùng giữa
 * home.css và catalog.css trong theme này) — chỉ dùng chung các token/utility
 * toàn site trong main.css (.dhtd-container/.dhtd-eyebrow/.dhtd-section-title/
 * .dhtd-btn).
 */

/* ---------------------------------- 1. Breadcrumb + Hero/intro ---------------------------------- */
.dhtd-blog-title {
  background: var(--dhtd-light-bg);
  padding: 28px 0 48px;
  position: relative;
  overflow: hidden;
}
.dhtd-blog-title__inner { position: relative; }
.dhtd-crumb {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--dhtd-muted);
  margin-bottom: 28px;
}
.dhtd-crumb a { color: var(--dhtd-muted); text-decoration: none; }
.dhtd-crumb a:hover { color: var(--dhtd-sky); }
.dhtd-crumb .sep { margin: 0 6px; opacity: .5; }
.dhtd-crumb .current { color: var(--dhtd-text); }

.dhtd-blog-title__content { max-width: 640px; position: relative; z-index: 1; }
.dhtd-blog-title__heading {
  font-size: clamp(1.9rem, 3.6vw, 2.6rem);
  line-height: 1.15;
  color: var(--dhtd-navy);
  margin: 0 0 14px;
}
.dhtd-blog-title__desc {
  font-size: 1.0625rem;
  color: var(--dhtd-muted);
  margin: 0;
}

.dhtd-blog-title__art {
  position: absolute;
  top: 50%;
  right: -40px;
  transform: translateY(-50%);
  width: 320px;
  height: 320px;
  opacity: 0.5;
  pointer-events: none;
}
.dhtd-blog-title__art .dhtd-circuit-svg { width: 100%; height: 100%; }
@media (max-width: 900px) {
  .dhtd-blog-title__art { display: none; }
}

/* ---------------------------------- 2. Card bài nổi bật ---------------------------------- */
.dhtd-blog-featured { padding: 40px 0 0; }
.dhtd-blog-featured__card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 0;
  background: var(--dhtd-white);
  border: 1px solid var(--dhtd-border);
  border-radius: 12px;
  overflow: hidden;
  text-decoration: none !important;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.dhtd-blog-featured__card:hover { border-color: var(--dhtd-sky); box-shadow: 0 8px 24px rgba(22, 62, 124, 0.1); }
.dhtd-blog-featured__card:focus-visible { outline: 2px solid var(--dhtd-sky); outline-offset: 3px; }
.dhtd-blog-featured__media { aspect-ratio: 16/9; background: var(--dhtd-navy); }
.dhtd-blog-featured__media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.dhtd-blog-featured__media-placeholder { display: block; width: 100%; height: 100%; }
.dhtd-blog-featured__body { padding: 32px; display: flex; flex-direction: column; justify-content: center; }
.dhtd-blog-featured__cat {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--dhtd-sky);
  margin-bottom: 12px;
}
.dhtd-blog-featured__title {
  font-size: clamp(1.25rem, 2.2vw, 1.625rem);
  line-height: 1.3;
  color: var(--dhtd-navy);
  margin: 0 0 14px;
}
.dhtd-blog-featured__excerpt { font-size: 1rem; color: var(--dhtd-text); line-height: 1.65; margin: 0 0 20px; }
.dhtd-blog-featured__meta { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.dhtd-blog-featured__date { font-size: 0.8125rem; color: var(--dhtd-muted); }
.dhtd-blog-featured__cta { font-size: 0.9375rem; font-weight: 700; color: var(--dhtd-navy); white-space: nowrap; }
.dhtd-blog-featured__cta span { color: var(--dhtd-gold); }
@media (max-width: 780px) {
  .dhtd-blog-featured__card { grid-template-columns: 1fr; }
  .dhtd-blog-featured__body { padding: 24px; }
}

/* ---------------------------------- 3. Category navigation (pill) ---------------------------------- */
.dhtd-blog-catnav { padding: 32px 0 8px; }
.dhtd-blog-catnav__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
@media (max-width: 560px) {
  .dhtd-blog-catnav__inner { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 4px; }
}
.dhtd-blog-pill {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  padding: 10px 20px;
  border-radius: 999px;
  border: 1.5px solid var(--dhtd-border);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--dhtd-text);
  background: var(--dhtd-white);
  text-decoration: none !important;
  transition: background-color .15s ease, border-color .15s ease, color .15s ease;
}
.dhtd-blog-pill:hover { border-color: var(--dhtd-sky); color: var(--dhtd-sky); }
.dhtd-blog-pill:focus-visible { outline: 2px solid var(--dhtd-sky); outline-offset: 2px; }
.dhtd-blog-pill.is-active {
  background: var(--dhtd-navy);
  border-color: var(--dhtd-navy);
  color: var(--dhtd-white) !important;
}

/* ---------------------------------- 4. Grid bài viết ---------------------------------- */
.dhtd-blog-grid-section { padding: 32px 0 72px; }
.dhtd-blog-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.dhtd-blog-card {
  display: block;
  background: var(--dhtd-white);
  border: 1px solid var(--dhtd-border);
  border-radius: 10px;
  overflow: hidden;
  text-decoration: none !important;
  transition: border-color .15s ease, transform .15s ease;
}
.dhtd-blog-card:hover { border-color: var(--dhtd-sky); transform: translateY(-3px); }
.dhtd-blog-card:focus-visible { outline: 2px solid var(--dhtd-sky); outline-offset: 3px; border-color: var(--dhtd-sky); }
.dhtd-blog-card__media { aspect-ratio: 16/9; background: var(--dhtd-navy); }
.dhtd-blog-card__media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.dhtd-blog-card__media-placeholder { display: block; width: 100%; height: 100%; }
.dhtd-blog-card__body { padding: 20px; }
.dhtd-blog-card__cat {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--dhtd-sky);
  margin-bottom: 10px;
}
.dhtd-blog-card__title { display: block; font-size: 1.0625rem; color: var(--dhtd-navy); margin: 0 0 10px; line-height: 1.4; }
.dhtd-blog-card__date { display: block; font-size: 0.8125rem; color: var(--dhtd-muted); margin-bottom: 12px; }
.dhtd-blog-card__excerpt { font-size: 0.9375rem; color: var(--dhtd-text); line-height: 1.6; margin: 0 0 16px; }
.dhtd-blog-card__cta { display: block; font-size: 0.875rem; font-weight: 700; color: var(--dhtd-navy); }
.dhtd-blog-card__cta span { color: var(--dhtd-gold); }
@media (max-width: 1000px) {
  .dhtd-blog-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .dhtd-blog-grid { grid-template-columns: 1fr; }
}

.dhtd-empty-state {
  padding: 48px 24px;
  text-align: center;
  color: var(--dhtd-muted);
  background: var(--dhtd-light-bg);
  border-radius: 10px;
  font-size: 1rem;
}

/* ---- Pagination WordPress (the_posts_pagination) ---- */
.dhtd-blog-grid-section .pagination,
.dhtd-blog-grid-section .nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: 40px;
}
.dhtd-blog-grid-section .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border-radius: 8px;
  border: 1.5px solid var(--dhtd-border);
  color: var(--dhtd-navy);
  text-decoration: none !important;
  font-weight: 600;
  font-size: 0.9375rem;
}
.dhtd-blog-grid-section .page-numbers:hover { border-color: var(--dhtd-sky); color: var(--dhtd-sky); }
.dhtd-blog-grid-section .page-numbers.current { background: var(--dhtd-navy); border-color: var(--dhtd-navy); color: var(--dhtd-white); }
.dhtd-blog-grid-section .page-numbers.dots { border-color: transparent; }

/* ---------------------------------- 5. Newsletter + Mini CTA ---------------------------------- */
.dhtd-blog-subrow { background: var(--dhtd-light-bg); padding: 56px 0; }
.dhtd-blog-subrow__inner {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: 24px;
  align-items: stretch;
}
.dhtd-blog-newsletter,
.dhtd-blog-cta {
  background: var(--dhtd-white);
  border: 1px solid var(--dhtd-border);
  border-radius: 12px;
  padding: 28px;
  display: flex;
  gap: 18px;
}
.dhtd-blog-newsletter__icon,
.dhtd-blog-cta__icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--dhtd-light-bg);
  color: var(--dhtd-navy);
  display: flex;
  align-items: center;
  justify-content: center;
}
.dhtd-blog-newsletter__icon .dhtd-icon-svg,
.dhtd-blog-cta__icon .dhtd-icon-svg { width: 22px; height: 22px; }
.dhtd-blog-newsletter__title { font-size: 1.125rem; color: var(--dhtd-navy); margin: 0 0 8px; }
.dhtd-blog-newsletter__desc { font-size: 0.9375rem; color: var(--dhtd-muted); line-height: 1.6; margin: 0 0 14px; }
.dhtd-blog-newsletter__status {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--dhtd-navy);
  background: var(--dhtd-light-bg);
  border: 1px solid var(--dhtd-border);
  border-radius: 8px;
  padding: 10px 16px;
  margin: 0;
}
.dhtd-blog-cta { background: var(--dhtd-navy); border-color: var(--dhtd-navy); }
.dhtd-blog-cta__icon { background: rgba(255,255,255,0.12); color: var(--dhtd-gold); }
.dhtd-blog-cta__title { font-size: 1.0625rem; font-weight: 700; color: var(--dhtd-white); margin: 0 0 8px; }
.dhtd-blog-cta__desc { font-size: 0.875rem; color: rgba(255,255,255,0.75); line-height: 1.6; margin: 0 0 14px; }
.dhtd-blog-cta__link { font-size: 0.9375rem; font-weight: 700; color: var(--dhtd-gold); text-decoration: none; }
.dhtd-blog-cta__link:hover { color: var(--dhtd-white); }
@media (max-width: 780px) {
  .dhtd-blog-subrow__inner { grid-template-columns: 1fr; }
}

/* ---------------------------------- 6. Chủ đề nổi bật (nền Deep Navy) ---------------------------------- */
.dhtd-blog-topics { background: var(--dhtd-navy); padding: 64px 0; }
.dhtd-blog-topics__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}
.dhtd-blog-topics__card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 10px;
  text-decoration: none !important;
  transition: background-color .15s ease, border-color .15s ease, transform .15s ease;
}
.dhtd-blog-topics__card:hover { background: rgba(255, 255, 255, 0.1); border-color: var(--dhtd-gold); transform: translateY(-2px); }
.dhtd-blog-topics__card:focus-visible { outline: 2px solid var(--dhtd-gold); outline-offset: 3px; }
.dhtd-blog-topics__icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(245, 166, 35, 0.15);
  color: var(--dhtd-gold);
  display: flex;
  align-items: center;
  justify-content: center;
}
.dhtd-blog-topics__icon .dhtd-icon-svg { width: 20px; height: 20px; }
.dhtd-blog-topics__name { font-size: 1.0625rem; font-weight: 700; color: var(--dhtd-white); }
.dhtd-blog-topics__meta { font-size: 0.8438rem; color: rgba(255,255,255,0.65); }
@media (max-width: 560px) {
  .dhtd-blog-topics__grid { grid-template-columns: 1fr; }
}