/* ==========================================================================
   content.css - Trang trong: category / post / page / search
   Kế thừa nguyên design system của trang chủ.
   ========================================================================== */

/* ---------------------------------------------------------- Page hero */
.page-hero {
  background-color: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border-soft);
  padding-bottom: 26px;
}

.page-hero__title {
  font-size: 34px;
  line-height: 1.2;
  margin-bottom: 8px;
}

.page-hero__text {
  font-size: var(--fs-lead);
  color: var(--color-text);
  max-width: 68ch;
}

.page-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
  margin-top: 14px;
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

.page-hero__meta strong {
  color: var(--color-navy);
}

/* --------------------------------------------------------- Bộ lọc */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-block: 18px;
  border-bottom: 1px solid var(--color-border-soft);
}

.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-chips a {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-navy);
  background-color: #fff;
}

.filter-chips a:hover {
  border-color: var(--color-gold-dark);
  color: var(--color-navy);
}

.filter-chips a[aria-current="true"] {
  background-color: var(--color-gold);
  border-color: var(--color-gold-dark);
  color: var(--color-navy);
  font-weight: 600;
}

.result-count {
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

/* ----------------------------------------------------- Lưới bài viết */
.post-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
}

.post-card .card__media {
  aspect-ratio: 16 / 10;
}

.post-card .card__body {
  gap: 8px;
}

.post-card__title {
  font-size: var(--fs-h4);
  line-height: 1.34;
}

.post-card__title a:hover {
  color: var(--color-accent);
}

.post-card__excerpt {
  font-size: var(--fs-sm);
  line-height: 1.55;
  color: var(--color-text-muted);
  flex: 1;
}

/* --------------------------------------------------------- Sidebar */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: calc(var(--header-height) + 20px);
}

.widget {
  background-color: #fff;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 20px;
}

.widget--dark {
  background-color: var(--color-ink);
  border-color: transparent;
  color: var(--color-on-dark-muted);
}

.widget--dark .widget__title {
  color: #fff;
}

.widget__title {
  font-size: var(--fs-h4);
  margin-bottom: 14px;
}

.widget__list li + li {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--color-border-soft);
}

.widget__list a {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-navy);
  line-height: 1.4;
}

.widget__list a:hover {
  color: var(--color-accent);
}

.widget .media__figure {
  width: 84px;
  aspect-ratio: 16 / 10;
}

/* ---------------------------------------------------- Bài viết đơn */
.post-header {
  max-width: var(--reading-max);
}

.post-header__title {
  font-size: 36px;
  line-height: 1.22;
  margin-bottom: 12px;
}

.post-header__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
}

.post-featured {
  margin-block: 24px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.post-featured img {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.post-featured figcaption {
  padding: 10px 16px;
  font-size: var(--fs-xs);
  color: var(--color-text-soft);
  background-color: var(--color-bg-alt);
}

/* Cột đọc hẹp hơn container toàn site để dễ đọc văn bản dài */
.post-body {
  max-width: var(--reading-max);
  font-size: 17px;
  line-height: 1.75;
  color: var(--color-text);
}

.post-body > * + * {
  margin-top: 18px;
}

.post-body h2 {
  font-size: 26px;
  margin-top: 34px;
}

.post-body h3 {
  font-size: 20px;
  margin-top: 26px;
}

.post-body ul,
.post-body ol {
  padding-left: 22px;
}

.post-body ul { list-style: disc; }
.post-body ol { list-style: decimal; }

.post-body li + li {
  margin-top: 6px;
}

.post-body a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.post-body blockquote {
  padding: 16px 22px;
  border-left: 4px solid var(--color-gold);
  background-color: var(--color-bg-alt);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--color-navy);
}

.post-body figure img {
  width: 100%;
  border-radius: var(--radius-md);
}

.post-body figcaption {
  margin-top: 8px;
  font-size: var(--fs-xs);
  color: var(--color-text-soft);
}

.post-body table {
  font-size: var(--fs-sm);
}

.post-body th,
.post-body td {
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  text-align: left;
}

.post-body th {
  background-color: var(--color-bg-alt);
  color: var(--color-navy);
  font-weight: 600;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 30px;
  max-width: var(--reading-max);
}

.post-tags a {
  display: inline-flex;
  align-items: center;
  height: 32px;
  padding: 0 14px;
  border-radius: var(--radius-pill);
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border-soft);
  font-size: var(--fs-xs);
  color: var(--color-navy);
}

.post-tags a:hover {
  border-color: var(--color-gold-dark);
  color: var(--color-navy);
}

/* ------------------------------------------------------- Trang tĩnh */
.page-body {
  font-size: 17px;
  line-height: 1.75;
}

.page-body > * + * {
  margin-top: 18px;
}

.page-body h2 {
  font-size: 26px;
  margin-top: 34px;
}

.page-body h3 {
  font-size: 20px;
  margin-top: 24px;
}

.page-body ul {
  list-style: disc;
  padding-left: 22px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.feature-card {
  background-color: #fff;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 22px;
}

.feature-card img {
  width: 34px;
  height: 34px;
  margin-bottom: 12px;
}

.feature-card h3 {
  font-size: var(--fs-h4);
  margin-bottom: 6px;
}

.feature-card p {
  font-size: var(--fs-sm);
  line-height: 1.55;
  color: var(--color-text-muted);
}

/* ------------------------------------------------- Kết quả tìm kiếm */
.search-hero .search-form {
  margin-top: 18px;
}

.search-results {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.search-result {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 22px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--color-border-soft);
  align-items: start;
}

.search-result__media {
  border-radius: var(--radius-md);
  overflow: hidden;
}

.search-result__media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.search-result__kind {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: var(--radius-xs);
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border-soft);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.search-result__title {
  font-size: var(--fs-h3);
  line-height: 1.3;
  margin-bottom: 6px;
}

.search-result__title a:hover {
  color: var(--color-accent);
}

.search-result__text {
  font-size: var(--fs-sm);
  line-height: 1.6;
  color: var(--color-text-muted);
}

.search-result mark {
  background-color: var(--color-gold-light);
  color: var(--color-navy);
  padding: 0 2px;
  border-radius: 2px;
}

.search-empty {
  padding: 40px 0;
  text-align: center;
  color: var(--color-text-muted);
}