/* ==========================================================================
   Category Archive Layouts – category-layouts.css
   Uses CSS custom properties: --color-primary, --color-secondary,
   --color-surface, --color-bg, --color-text, --color-muted,
   --color-border, --color-badge-bg, --color-badge-text
   ========================================================================== */

/* --------------------------------------------------------------------------
   Shared / Base
   -------------------------------------------------------------------------- */
.cat-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
  color: var(--color-text);
  background: var(--color-bg);
}

.cat-no-posts {
  text-align: center;
  padding: 3rem 0;
  color: var(--color-muted);
}

.cat-meta-sep {
  margin: 0 .35rem;
  color: var(--color-muted);
}

/* Badge */
.news-card__cat {
  display: inline-block;
  padding: .2rem .65rem;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  border-radius: 3px;
  background: var(--color-badge-bg);
  color: var(--color-badge-text);
  text-decoration: none;
  margin-bottom: .5rem;
}

/* Pagination */
.cat-pagination {
  margin-top: 3rem;
  display: flex;
  justify-content: center;
}
.cat-pagination .page-numbers {
  display: flex;
  gap: .4rem;
  list-style: none;
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
  justify-content: center;
}
.cat-pagination .page-numbers li a,
.cat-pagination .page-numbers li span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 2.2rem;
  height: 2.2rem;
  padding: 0 .6rem;
  border-radius: 6px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  text-decoration: none;
  font-size: .875rem;
  transition: background .2s, color .2s;
}
.cat-pagination .page-numbers li a:hover {
  background: var(--color-primary);
  color: var(--color-btn-text);
  border-color: var(--color-primary);
}
.cat-pagination .page-numbers li .current {
  background: var(--color-primary);
  color: var(--color-btn-text);
  border-color: var(--color-primary);
}

/* ==========================================================================
   CAT-1: Grid 3 cột chuẩn
   ========================================================================== */
.cat-1__header {
  padding: 2.5rem 0 2rem;
  border-bottom: 3px solid var(--color-primary);
  margin-bottom: 2rem;
}
.cat-1__title {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--color-text);
  margin: 0 0 .5rem;
}
.cat-1__desc {
  color: var(--color-muted);
  font-size: 1rem;
  margin: 0 0 .75rem;
  max-width: 640px;
}
.cat-1__count {
  font-size: .8rem;
  color: var(--color-muted);
  background: var(--color-surface);
  padding: .25rem .75rem;
  border-radius: 20px;
  border: 1px solid var(--color-border);
}
.cat-1__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}
.cat-1__card {
  background: var(--color-surface);
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: box-shadow .2s, transform .2s;
}
.cat-1__card:hover {
  box-shadow: 0 8px 24px rgba(0,0,0,.1);
  transform: translateY(-3px);
}
.cat-1__thumb {
  display: block;
  height: 200px;
  overflow: hidden;
}
.cat-1__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s;
}
.cat-1__card:hover .cat-1__thumb img {
  transform: scale(1.04);
}
.cat-1__card-body {
  padding: 1rem 1.1rem 1.25rem;
}
.cat-1__card-title {
  font-size: 1rem;
  font-weight: 700;
  margin: .4rem 0 .6rem;
  line-height: 1.4;
}
.cat-1__card-title a {
  color: var(--color-text);
  text-decoration: none;
}
.cat-1__card-title a:hover { color: var(--color-primary); }
.cat-1__meta {
  font-size: .78rem;
  color: var(--color-muted);
}

@media (max-width: 1024px) {
  .cat-1__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .cat-1__title { font-size: 1.75rem; }
}
@media (max-width: 480px) {
  .cat-1__grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   CAT-2: Hero + Grid 4 cột
   ========================================================================== */
.cat-2__header {
  padding: 2rem 0 1.5rem;
  border-bottom: 3px solid var(--color-primary);
  margin-bottom: 1.75rem;
}
.cat-2__title {
  font-size: 2rem;
  font-weight: 800;
  margin: 0 0 .4rem;
  color: var(--color-text);
}
.cat-2__desc {
  color: var(--color-muted);
  margin: 0;
}
.cat-2__hero {
  position: relative;
  height: 480px;
  border-radius: 12px;
  overflow: hidden;
  background-size: cover;
  background-position: center;
  margin-bottom: 2rem;
}
.cat-2__hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,.8) 0%, rgba(0,0,0,.2) 60%, transparent 100%);
}
.cat-2__hero-body {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem;
  color: var(--color-nav-text);
}
.cat-2__hero-title {
  font-size: 1.9rem;
  font-weight: 800;
  margin: .4rem 0 .6rem;
  line-height: 1.25;
}
.cat-2__hero-title a { color: var(--color-nav-text); text-decoration: none; }
.cat-2__hero-title a:hover { text-decoration: underline; }
.cat-2__hero-meta { font-size: .82rem; opacity: .85; margin-bottom: .5rem; }
.cat-2__hero-excerpt { font-size: .95rem; opacity: .9; max-width: 640px; margin: 0; }
.cat-2__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}
.cat-2__card {
  background: var(--color-surface);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: box-shadow .2s;
}
.cat-2__card:hover { box-shadow: 0 6px 18px rgba(0,0,0,.09); }
.cat-2__thumb {
  display: block;
  height: 140px;
  overflow: hidden;
}
.cat-2__thumb img { width: 100%; height: 100%; object-fit: cover; }
.cat-2__card-body { padding: .85rem; }
.cat-2__card-title {
  font-size: .9rem;
  font-weight: 700;
  margin: .35rem 0 .4rem;
  line-height: 1.35;
}
.cat-2__card-title a { color: var(--color-text); text-decoration: none; }
.cat-2__card-title a:hover { color: var(--color-primary); }
.cat-2__meta { font-size: .75rem; color: var(--color-muted); }

@media (max-width: 1024px) {
  .cat-2__grid { grid-template-columns: repeat(2, 1fr); }
  .cat-2__hero { height: 380px; }
}
@media (max-width: 768px) {
  .cat-2__hero { height: 300px; }
  .cat-2__hero-title { font-size: 1.4rem; }
}
@media (max-width: 480px) {
  .cat-2__grid { grid-template-columns: 1fr; }
  .cat-2__hero { height: 260px; }
}

/* ==========================================================================
   CAT-3: Magazine 2 cột (2/3 + 1/3)
   ========================================================================== */
.cat-3__header {
  padding: 2rem 0 1.5rem;
  border-bottom: 3px solid var(--color-primary);
  margin-bottom: 2rem;
}
.cat-3__title {
  font-size: 2rem;
  font-weight: 800;
  margin: 0 0 .4rem;
  color: var(--color-text);
}
.cat-3__desc { color: var(--color-muted); margin: 0; }
.cat-3__layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2.5rem;
  align-items: start;
}
/* Main column */
.cat-3__featured { margin-bottom: 2rem; }
.cat-3__featured-thumb {
  display: block;
  height: 320px;
  overflow: hidden;
  border-radius: 10px;
  margin-bottom: 1rem;
}
.cat-3__featured-thumb img { width: 100%; height: 100%; object-fit: cover; }
.cat-3__featured-title {
  font-size: 1.5rem;
  font-weight: 800;
  margin: .4rem 0 .6rem;
  line-height: 1.3;
}
.cat-3__featured-title a { color: var(--color-text); text-decoration: none; }
.cat-3__featured-title a:hover { color: var(--color-primary); }
.cat-3__excerpt { color: var(--color-muted); font-size: .95rem; margin: .5rem 0 0; }
.cat-3__meta { font-size: .8rem; color: var(--color-muted); }
.cat-3__list { list-style: none; padding: 0; margin: 0; }
.cat-3__list-item {
  display: flex;
  gap: 1rem;
  padding: 1rem 0;
  border-top: 1px solid var(--color-border);
}
.cat-3__list-thumb {
  flex-shrink: 0;
  width: 100px;
  height: 72px;
  overflow: hidden;
  border-radius: 6px;
  display: block;
}
.cat-3__list-thumb img { width: 100%; height: 100%; object-fit: cover; }
.cat-3__list-title {
  font-size: .9rem;
  font-weight: 700;
  margin: .25rem 0 .4rem;
  line-height: 1.35;
}
.cat-3__list-title a { color: var(--color-text); text-decoration: none; }
.cat-3__list-title a:hover { color: var(--color-primary); }
/* Sidebar */
.cat-3__sidebar {
  position: sticky;
  top: 1.5rem;
}
.cat-3__sidebar-widget {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.25rem;
}
.cat-3__sidebar-title {
  font-size: .85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--color-primary);
  margin: 0 0 1rem;
  padding-bottom: .6rem;
  border-bottom: 2px solid var(--color-primary);
}
.cat-3__sidebar-list { list-style: none; padding: 0; margin: 0; }
.cat-3__sidebar-item {
  display: flex;
  gap: .75rem;
  padding: .75rem 0;
  border-bottom: 1px solid var(--color-border);
}
.cat-3__sidebar-item:last-child { border-bottom: none; }
.cat-3__sidebar-thumb {
  flex-shrink: 0;
  width: 64px;
  height: 48px;
  overflow: hidden;
  border-radius: 5px;
  display: block;
}
.cat-3__sidebar-thumb img { width: 100%; height: 100%; object-fit: cover; }
.cat-3__sidebar-post-title {
  font-size: .82rem;
  font-weight: 700;
  margin: 0 0 .3rem;
  line-height: 1.3;
}
.cat-3__sidebar-post-title a { color: var(--color-text); text-decoration: none; }
.cat-3__sidebar-post-title a:hover { color: var(--color-primary); }
.cat-3__sidebar-date { font-size: .72rem; color: var(--color-muted); }

@media (max-width: 1024px) {
  .cat-3__layout { grid-template-columns: 1fr; }
  .cat-3__sidebar { position: static; }
}
@media (max-width: 768px) {
  .cat-3__featured-thumb { height: 240px; }
  .cat-3__featured-title { font-size: 1.25rem; }
}
@media (max-width: 480px) {
  .cat-3__list-item { flex-direction: column; }
  .cat-3__list-thumb { width: 100%; height: 160px; }
}

/* ==========================================================================
   CAT-4: List view compact (horizontal cards)
   ========================================================================== */
.cat-4__header {
  padding: 2rem 0 1.5rem;
  border-bottom: 3px solid var(--color-primary);
  margin-bottom: 2rem;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: .75rem;
}
.cat-4__title {
  font-size: 2rem;
  font-weight: 800;
  margin: 0;
  color: var(--color-text);
  flex: 1 1 auto;
}
.cat-4__desc {
  width: 100%;
  color: var(--color-muted);
  margin: 0;
  font-size: .95rem;
}
.cat-4__count {
  font-size: .78rem;
  color: var(--color-muted);
  background: var(--color-surface);
  padding: .2rem .65rem;
  border-radius: 20px;
  border: 1px solid var(--color-border);
  white-space: nowrap;
}
.cat-4__list { display: flex; flex-direction: column; }
.cat-4__item {
  display: flex;
  gap: 1.25rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--color-border);
  align-items: flex-start;
}
.cat-4__item:first-child { border-top: 1px solid var(--color-border); }
.cat-4__thumb {
  flex-shrink: 0;
  width: 160px;
  height: 110px;
  overflow: hidden;
  border-radius: 8px;
  display: block;
}
.cat-4__thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.cat-4__item:hover .cat-4__thumb img { transform: scale(1.04); }
.cat-4__body { flex: 1; min-width: 0; }
.cat-4__item-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin: .35rem 0 .5rem;
  line-height: 1.4;
}
.cat-4__item-title a { color: var(--color-text); text-decoration: none; }
.cat-4__item-title a:hover { color: var(--color-primary); }
.cat-4__excerpt {
  font-size: .875rem;
  color: var(--color-muted);
  margin: 0 0 .6rem;
  line-height: 1.5;
}
.cat-4__meta { font-size: .78rem; color: var(--color-muted); }
.cat-4__author { font-weight: 600; color: var(--color-secondary); }

@media (max-width: 768px) {
  .cat-4__thumb { width: 120px; height: 85px; }
  .cat-4__item-title { font-size: .95rem; }
}
@media (max-width: 480px) {
  .cat-4__item { flex-direction: column; }
  .cat-4__thumb { width: 100%; height: 180px; }
  .cat-4__header { flex-direction: column; align-items: flex-start; }
}

/* ==========================================================================
   CAT-5: Masonry 3 cột với overlay text
   ========================================================================== */
.cat-5__header {
  padding: 2rem 0 1.5rem;
  border-bottom: 3px solid var(--color-primary);
  margin-bottom: 2rem;
}
.cat-5__title {
  font-size: 2rem;
  font-weight: 800;
  margin: 0 0 .4rem;
  color: var(--color-text);
}
.cat-5__desc { color: var(--color-muted); margin: 0; }
.cat-5__masonry {
  columns: 3;
  column-gap: 1.25rem;
}
.cat-5__card {
  break-inside: avoid;
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  background-size: cover;
  background-position: center;
  background-color: var(--color-surface);
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  cursor: pointer;
  transition: transform .2s;
}
.cat-5__card:hover { transform: scale(1.01); }
.cat-5__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,.78) 0%, rgba(0,0,0,.15) 55%, transparent 100%);
  transition: opacity .2s;
}
.cat-5__card:hover .cat-5__overlay { opacity: .9; }
.cat-5__card-body {
  position: relative;
  z-index: 1;
  padding: 1.1rem;
  color: var(--color-nav-text);
}
.cat-5__card-title {
  font-size: .95rem;
  font-weight: 700;
  margin: .35rem 0 .4rem;
  line-height: 1.35;
}
.cat-5__card-title a { color: var(--color-nav-text); text-decoration: none; }
.cat-5__card-title a:hover { text-decoration: underline; }
.cat-5__meta { font-size: .75rem; opacity: .8; }

@media (max-width: 1024px) {
  .cat-5__masonry { columns: 2; }
}
@media (max-width: 480px) {
  .cat-5__masonry { columns: 1; }
  .cat-5__card { height: 260px !important; }
}

/* ==========================================================================
   CAT-6: Newspaper rows (1 lớn + 3 nhỏ)
   ========================================================================== */
.cat-6__header {
  padding: 2rem 0 1.5rem;
  border-bottom: 3px solid var(--color-primary);
  margin-bottom: 2rem;
}
.cat-6__title {
  font-size: 2rem;
  font-weight: 800;
  margin: 0 0 .4rem;
  color: var(--color-text);
}
.cat-6__desc { color: var(--color-muted); margin: 0; }
.cat-6__divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2rem 0;
}
.cat-6__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}
/* Big article */
.cat-6__big-thumb {
  display: block;
  height: 260px;
  overflow: hidden;
  border-radius: 8px;
  margin-bottom: .9rem;
}
.cat-6__big-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.cat-6__big:hover .cat-6__big-thumb img { transform: scale(1.03); }
.cat-6__big-title {
  font-size: 1.35rem;
  font-weight: 800;
  margin: .4rem 0 .6rem;
  line-height: 1.3;
}
.cat-6__big-title a { color: var(--color-text); text-decoration: none; }
.cat-6__big-title a:hover { color: var(--color-primary); }
.cat-6__big-excerpt { color: var(--color-muted); font-size: .9rem; margin: 0 0 .6rem; }
.cat-6__meta { font-size: .78rem; color: var(--color-muted); }
/* Small articles */
.cat-6__smalls {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}
.cat-6__small {
  display: flex;
  gap: .85rem;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--color-border);
}
.cat-6__small:last-child { border-bottom: none; padding-bottom: 0; }
.cat-6__small-thumb {
  flex-shrink: 0;
  width: 90px;
  height: 68px;
  overflow: hidden;
  border-radius: 6px;
  display: block;
}
.cat-6__small-thumb img { width: 100%; height: 100%; object-fit: cover; }
.cat-6__small-title {
  font-size: .875rem;
  font-weight: 700;
  margin: .2rem 0 .4rem;
  line-height: 1.35;
}
.cat-6__small-title a { color: var(--color-text); text-decoration: none; }
.cat-6__small-title a:hover { color: var(--color-primary); }

@media (max-width: 1024px) {
  .cat-6__row { grid-template-columns: 1fr; }
  .cat-6__big-thumb { height: 220px; }
}
@media (max-width: 768px) {
  .cat-6__big-title { font-size: 1.15rem; }
}
@media (max-width: 480px) {
  .cat-6__small { flex-direction: column; }
  .cat-6__small-thumb { width: 100%; height: 160px; }
}

/* ==========================================================================
   CAT-7: Card với full excerpt, 2 cột elegant
   ========================================================================== */
.cat-7__header {
  padding: 2.5rem 0 2rem;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 2.5rem;
}
.cat-7__title {
  font-size: 2.25rem;
  font-weight: 800;
  margin: 0 0 .5rem;
  color: var(--color-text);
}
.cat-7__desc {
  color: var(--color-muted);
  font-size: 1rem;
  max-width: 560px;
  margin: 0 auto .75rem;
}
.cat-7__count {
  font-size: .78rem;
  color: var(--color-muted);
  background: var(--color-surface);
  padding: .25rem .75rem;
  border-radius: 20px;
  border: 1px solid var(--color-border);
}
.cat-7__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
}
.cat-7__card {
  background: var(--color-surface);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  transition: box-shadow .25s;
}
.cat-7__card:hover { box-shadow: 0 10px 30px rgba(0,0,0,.1); }
.cat-7__thumb {
  display: block;
  height: 220px;
  overflow: hidden;
}
.cat-7__thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s; }
.cat-7__card:hover .cat-7__thumb img { transform: scale(1.04); }
.cat-7__card-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.cat-7__card-title {
  font-size: 1.15rem;
  font-weight: 800;
  margin: .4rem 0 .6rem;
  line-height: 1.35;
}
.cat-7__card-title a { color: var(--color-text); text-decoration: none; }
.cat-7__card-title a:hover { color: var(--color-primary); }
.cat-7__meta {
  font-size: .78rem;
  color: var(--color-muted);
  margin-bottom: .9rem;
}
.cat-7__author { font-weight: 600; color: var(--color-secondary); }
.cat-7__excerpt {
  font-size: .9rem;
  color: var(--color-muted);
  line-height: 1.65;
  flex: 1;
  margin: 0 0 1.25rem;
}
.cat-7__read-more {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  font-size: .85rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  border: 2px solid var(--color-primary);
  padding: .45rem 1rem;
  border-radius: 6px;
  align-self: flex-start;
  transition: background .2s, color .2s;
}
.cat-7__read-more:hover {
  background: var(--color-primary);
  color: var(--color-btn-text);
}

@media (max-width: 1024px) {
  .cat-7__grid { gap: 1.75rem; }
}
@media (max-width: 768px) {
  .cat-7__grid { grid-template-columns: 1fr; }
  .cat-7__header { text-align: left; }
  .cat-7__desc { margin-left: 0; }
}
@media (max-width: 480px) {
  .cat-7__thumb { height: 180px; }
  .cat-7__title { font-size: 1.75rem; }
}

/* ==========================================================================
   CAT-8: Timeline style theo ngày
   ========================================================================== */
.cat-8__header {
  padding: 2rem 0 1.5rem;
  border-bottom: 3px solid var(--color-primary);
  margin-bottom: 2.5rem;
}
.cat-8__title {
  font-size: 2rem;
  font-weight: 800;
  margin: 0 0 .4rem;
  color: var(--color-text);
}
.cat-8__desc { color: var(--color-muted); margin: 0; }
.cat-8__timeline { position: relative; }
.cat-8__timeline::before {
  content: '';
  position: absolute;
  left: 80px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}
.cat-8__day-group {
  display: flex;
  gap: 0;
  margin-bottom: 2.5rem;
}
.cat-8__date-marker {
  flex-shrink: 0;
  width: 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: .25rem;
  position: relative;
  z-index: 1;
}
.cat-8__date-marker::after {
  content: '';
  position: absolute;
  right: -5px;
  top: .6rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid var(--color-bg);
}
.cat-8__date-day {
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
}
.cat-8__date-month {
  font-size: .65rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-muted);
  text-align: center;
  margin-top: .15rem;
}
.cat-8__day-posts {
  flex: 1;
  padding-left: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.cat-8__item {
  display: flex;
  gap: 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.1rem;
  align-items: flex-start;
  transition: box-shadow .2s;
}
.cat-8__item:hover { box-shadow: 0 4px 16px rgba(0,0,0,.08); }
.cat-8__item-body { flex: 1; min-width: 0; }
.cat-8__item-title {
  font-size: 1rem;
  font-weight: 700;
  margin: .3rem 0 .5rem;
  line-height: 1.4;
}
.cat-8__item-title a { color: var(--color-text); text-decoration: none; }
.cat-8__item-title a:hover { color: var(--color-primary); }
.cat-8__meta { font-size: .78rem; color: var(--color-muted); margin-bottom: .5rem; }
.cat-8__excerpt { font-size: .875rem; color: var(--color-muted); margin: 0; line-height: 1.5; }
.cat-8__item-thumb {
  flex-shrink: 0;
  width: 110px;
  height: 80px;
  overflow: hidden;
  border-radius: 7px;
  display: block;
}
.cat-8__item-thumb img { width: 100%; height: 100%; object-fit: cover; }

@media (max-width: 768px) {
  .cat-8__timeline::before { left: 60px; }
  .cat-8__date-marker { width: 60px; }
  .cat-8__date-day { font-size: 1.4rem; }
  .cat-8__day-posts { padding-left: 1.25rem; }
}
@media (max-width: 480px) {
  .cat-8__timeline::before { display: none; }
  .cat-8__date-marker { width: auto; flex-direction: row; gap: .5rem; align-items: baseline; }
  .cat-8__date-marker::after { display: none; }
  .cat-8__day-group { flex-direction: column; }
  .cat-8__day-posts { padding-left: 0; }
  .cat-8__item { flex-direction: column; }
  .cat-8__item-thumb { width: 100%; height: 160px; }
}

/* ==========================================================================
   CAT-9: Full-width numbered list
   ========================================================================== */
.cat-9__header {
  padding: 2rem 0 1.5rem;
  border-bottom: 3px solid var(--color-primary);
  margin-bottom: 2rem;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: .75rem;
}
.cat-9__title {
  font-size: 2rem;
  font-weight: 800;
  margin: 0;
  color: var(--color-text);
  flex: 1 1 auto;
}
.cat-9__desc {
  width: 100%;
  color: var(--color-muted);
  margin: 0;
}
.cat-9__count {
  font-size: .78rem;
  color: var(--color-muted);
  background: var(--color-surface);
  padding: .2rem .65rem;
  border-radius: 20px;
  border: 1px solid var(--color-border);
}
.cat-9__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.cat-9__item {
  display: flex;
  gap: 1.5rem;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--color-border);
  align-items: flex-start;
}
.cat-9__item:first-child { border-top: 1px solid var(--color-border); }
.cat-9__number {
  flex-shrink: 0;
  font-size: 2.75rem;
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
  min-width: 3rem;
  opacity: .85;
}
.cat-9__thumb {
  flex-shrink: 0;
  width: 200px;
  height: 140px;
  overflow: hidden;
  border-radius: 10px;
  display: block;
}
.cat-9__thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.cat-9__item:hover .cat-9__thumb img { transform: scale(1.04); }
.cat-9__body { flex: 1; min-width: 0; }
.cat-9__item-title {
  font-size: 1.2rem;
  font-weight: 800;
  margin: .3rem 0 .6rem;
  line-height: 1.35;
}
.cat-9__item-title a { color: var(--color-text); text-decoration: none; }
.cat-9__item-title a:hover { color: var(--color-primary); }
.cat-9__excerpt {
  font-size: .9rem;
  color: var(--color-muted);
  margin: 0 0 .7rem;
  line-height: 1.55;
}
.cat-9__meta { font-size: .78rem; color: var(--color-muted); }
.cat-9__author { font-weight: 600; color: var(--color-secondary); }

@media (max-width: 1024px) {
  .cat-9__thumb { width: 160px; height: 115px; }
  .cat-9__number { font-size: 2.25rem; }
}
@media (max-width: 768px) {
  .cat-9__thumb { width: 130px; height: 95px; }
  .cat-9__item-title { font-size: 1.05rem; }
  .cat-9__number { font-size: 1.9rem; min-width: 2.5rem; }
}
@media (max-width: 480px) {
  .cat-9__item { flex-wrap: wrap; }
  .cat-9__number { font-size: 2.5rem; }
  .cat-9__thumb { width: 100%; height: 180px; order: 3; }
  .cat-9__body { order: 2; width: 100%; }
  .cat-9__header { flex-direction: column; align-items: flex-start; }
}

/* ==========================================================================
   CAT-10: Mosaic grid (2/3 + 1/3 rồi 3 bằng nhau, lặp lại)
   ========================================================================== */
.cat-10__header {
  padding: 2rem 0 1.5rem;
  border-bottom: 3px solid var(--color-primary);
  margin-bottom: 2rem;
}
.cat-10__title {
  font-size: 2rem;
  font-weight: 800;
  margin: 0 0 .4rem;
  color: var(--color-text);
}
.cat-10__desc { color: var(--color-muted); margin: 0; }
.cat-10__mosaic { display: flex; flex-direction: column; gap: 1.25rem; }
/* Row 1: duo (2/3 + 1/3) */
.cat-10__row-duo {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.25rem;
  height: 360px;
}
.cat-10__big,
.cat-10__small-side,
.cat-10__trio-card {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  background-size: cover;
  background-position: center;
  background-color: var(--color-surface);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  cursor: pointer;
  transition: transform .2s;
}
.cat-10__big:hover,
.cat-10__small-side:hover,
.cat-10__trio-card:hover { transform: scale(1.01); }
.cat-10__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,.78) 0%, rgba(0,0,0,.1) 60%, transparent 100%);
}
.cat-10__card-body {
  position: relative;
  z-index: 1;
  padding: 1.1rem;
  color: var(--color-nav-text);
}
.cat-10__card-title {
  font-size: 1.1rem;
  font-weight: 800;
  margin: .35rem 0 .4rem;
  line-height: 1.3;
}
.cat-10__card-title--sm { font-size: .9rem; }
.cat-10__card-title a { color: var(--color-nav-text); text-decoration: none; }
.cat-10__card-title a:hover { text-decoration: underline; }
.cat-10__meta { font-size: .75rem; opacity: .8; }
/* Row 2: trio (3 equal) */
.cat-10__row-trio {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  height: 240px;
}

@media (max-width: 1024px) {
  .cat-10__row-duo { height: 300px; }
  .cat-10__row-trio { height: 200px; }
}
@media (max-width: 768px) {
  .cat-10__row-duo {
    grid-template-columns: 1fr;
    height: auto;
  }
  .cat-10__big { height: 280px; }
  .cat-10__small-side { height: 200px; }
  .cat-10__row-trio {
    grid-template-columns: repeat(2, 1fr);
    height: auto;
  }
  .cat-10__trio-card { height: 180px; }
}
@media (max-width: 480px) {
  .cat-10__row-trio { grid-template-columns: 1fr; }
  .cat-10__trio-card { height: 200px; }
  .cat-10__big { height: 240px; }
}