/* Articles listing page — Phase 2.
 *
 * Two-column layout: filters sidebar + cards grid.
 */

.articles-list-panel {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px 80px !important;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.articles-list-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 16px;
  flex-wrap: wrap;
}
.articles-list-head .section-kicker {
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: block;
  margin-bottom: 4px;
}
.articles-list-head .section-title {
  font-size: 32px;
  margin: 0;
  color: var(--text-primary);
  letter-spacing: -.01em;
}
.articles-search-form input {
  background: var(--input-background);
  border: 1px solid var(--input-border);
  border-radius: var(--radius-pill);
  padding: 10px 16px;
  color: var(--text-primary);
  font: inherit;
  font-size: 13px;
  min-width: 280px;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.articles-search-form input:focus {
  border-color: var(--input-border-focus);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.articles-list-body {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 28px;
  align-items: flex-start;
}

/* Filters sidebar */
.articles-filters {
  position: sticky;
  top: 16px;
  background: var(--surface-container-low);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: calc(100vh - 32px);
  overflow-y: auto;
}
.filter-title {
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 8px 0 4px;
}
.filter-title:first-child { margin-top: 0; }
.filter-title-secondary { margin-top: 16px; }
.filter-chip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  transition: background .15s, color .15s;
}
.filter-chip:hover { background: var(--hover-overlay); color: var(--text-primary); }
.filter-chip.is-active { background: var(--primary-container); color: var(--on-primary-container); font-weight: 600; }
.filter-count {
  font-size: 11px;
  background: var(--surface-container);
  color: var(--text-muted);
  padding: 1px 6px;
  border-radius: var(--radius-pill);
}
.filter-chip.is-active .filter-count { background: var(--on-primary-container); color: var(--primary-container); }

.tag-chips { display: flex; flex-wrap: wrap; gap: 4px; }
.tag-chip {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px !important;
  background: var(--tertiary-container);
  color: var(--on-tertiary-container);
  border-radius: var(--radius-pill);
  font-size: 12px;
}
.tag-chip:hover { background: var(--surface-container-high); }
.tag-chip.is-active { background: var(--primary); color: var(--text-on-primary); }

/* Articles grid — v54: single column on EVERY width (desktop requirement:
   each article is one independent full-width row). Cards with a thumbnail
   become horizontal rows on wide screens and stack vertically on phones. */
.articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.article-list-card {
  position: relative;
  background: var(--surface-container-low);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: row;
  align-items: stretch;
  transition: border-color .15s, transform .15s;
}
.card-thumb {
  flex: 0 0 clamp(200px, 32%, 320px);
  width: auto;
  min-width: 0;
  aspect-ratio: auto;
  align-self: stretch;
  overflow: hidden;
  background: var(--surface-container);
}
.card-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; display: block; }
.article-list-card .card-body { flex: 1 1 auto; min-width: 0; }
.article-list-card:hover .card-thumb img { transform: scale(1.04); }
.article-list-card:hover { border-color: var(--primary); transform: translateY(-2px); }
.article-list-card.is-pinned { border-color: var(--primary); box-shadow: 0 0 0 2px var(--primary-container); }
.pinned-badge {
  position: absolute;
  top: 8px;
  inset-inline-end: 8px;
  background: var(--primary);
  color: var(--text-on-primary);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: 11px;
  font-weight: 600;
  z-index: 2;
}

.card-body {
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}
.card-category {
  align-self: flex-start;
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}
.card-category:hover { text-decoration: underline; }
.card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
  line-height: 1.35;
}
.card-title a { color: inherit; text-decoration: none; }
.card-title a:hover { color: var(--primary); }
.card-excerpt {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.card-meta {
  display: flex;
  gap: 8px;
  font-size: 11px;
  color: var(--text-muted);
  flex-wrap: wrap;
}
.card-meta .meta-date::before { content: '◷ '; }
.card-meta .meta-reading::before { content: '⌚ '; }
.card-meta .meta-views::before { content: '◉ '; }

.card-tags { display: flex; flex-wrap: wrap; gap: 4px; }
.card-tag {
  font-size: 11px;
  padding: 2px 8px;
  background: var(--tertiary-container);
  color: var(--on-tertiary-container);
  border-radius: var(--radius-pill);
  text-decoration: none;
}
.card-tag:hover { background: var(--surface-container-high); }

.card-readmore {
  margin-top: 4px;
  align-self: flex-start;
  font-size: 13px;
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  padding: 4px 0;
}
.card-readmore:hover { text-decoration: underline; }

/* Empty state */
.articles-empty {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 60px 20px;
  color: var(--text-muted);
}
.articles-empty h3 { margin: 0; color: var(--text-secondary); }
.articles-empty a {
  background: var(--surface-container);
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  font-size: 13px;
  border: 1px solid var(--border-subtle);
}

/* Responsive */
@media (max-width: 960px) {
  .articles-list-body { grid-template-columns: 1fr; }
  .articles-filters { position: static; max-height: none; flex-direction: row; flex-wrap: wrap; overflow-x: auto; }
  .filter-title { width: 100%; }
  .tag-chips { flex: 1; }
}
@media (max-width: 760px) {
  /* Cards stack: thumbnail on top, body below. */
  .article-list-card { flex-direction: column; }
  .card-thumb { flex: 0 0 auto; width: 100%; aspect-ratio: 16/9; }
}
@media (max-width: 600px) {
  .articles-list-panel { padding: 24px 16px 60px !important; }
  .articles-list-head .section-title { font-size: 24px; }
  .articles-search-form input { min-width: 0; width: 100%; }
  .articles-list-head { flex-direction: column; align-items: stretch; }
  .articles-grid { grid-template-columns: 1fr; }
}

/* Final single-column card layout override */
.articles-list-body{grid-template-columns:minmax(0,220px) minmax(0,1fr)}
.articles-grid{grid-template-columns:minmax(0,1fr)!important;min-width:0}
.article-list-card{width:100%;min-width:0}
.card-thumb{min-width:0}
.card-title,.card-excerpt{overflow-wrap:anywhere;word-break:normal}
@media(max-width:800px){.articles-list-body{grid-template-columns:minmax(0,1fr)}.article-list-card{flex-direction:column}.card-thumb{width:100%;flex-basis:auto;aspect-ratio:16/9}.card-thumb img{height:100%}}


/* Accessibility/responsive hardening: article cards always occupy one full row. */
.articles-list-body { grid-template-columns: minmax(0, 220px) minmax(0, 1fr); }
.articles-grid { display: grid; grid-template-columns: minmax(0, 1fr) !important; width: 100%; min-width: 0; }
.articles-grid > .article-list-card { grid-column: 1 / -1; width: 100%; min-width: 0; }
.article-list-card, .article-list-card * { min-width: 0; }
.article-list-card .card-body { overflow-wrap: anywhere; }
.card-thumb img { max-width: 100%; }
@media (max-width: 960px) {
  .articles-list-body { grid-template-columns: minmax(0, 1fr); }
  .articles-filters { max-width: 100%; }
}
@media (max-width: 760px) {
  .article-list-card { flex-direction: column; }
  .card-thumb { width: 100%; flex: 0 0 auto; aspect-ratio: 16 / 9; }
  .articles-search-form, .articles-search-form input { width: 100%; min-width: 0; box-sizing: border-box; }
}