/* Post-card / topic-card grid & row layout */

.section__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-10);
  gap: var(--space-4);
  flex-wrap: wrap;
}

.section__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  letter-spacing: -0.01em;
  position: relative;
}

.section__title::after {
  content: '';
  display: block;
  width: 0;
  height: 3px;
  background: var(--clr-accent);
  border-radius: var(--radius-pill);
  margin-top: var(--space-2);
  transition: width 420ms cubic-bezier(0.16, 1, 0.3, 1);
}

.section__title.revealed-heading::after {
  width: 40px;
}

.section__view-all {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--clr-accent);
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  transition: gap var(--dur-fast) var(--ease-out);
  white-space: nowrap;
}

.section__view-all:hover {
  gap: var(--space-3);
}

/* Post card */

.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: var(--space-6);
}

.post-row {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(0, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-8);
}

.post-card {
  display: flex;
  flex-direction: column;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 350ms cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 350ms cubic-bezier(0.16, 1, 0.3, 1),
              border-color 350ms cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform;
}

.post-card:hover,
.post-card:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(var(--clr-ink-rgb),.12);
  border-color: var(--clr-accent);
}

.post-card__image-wrap {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  isolation: isolate;
}

.post-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 500ms cubic-bezier(0.16, 1, 0.3, 1),
              filter 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

.post-card:hover .post-card__image {
  transform: scale(1.06);
  filter: brightness(1.04);
}

.post-card__read-time {
  position: absolute;
  bottom: var(--space-2);
  right: var(--space-2);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: var(--weight-semibold);
  color: var(--clr-hero-text);
  background: rgba(var(--clr-ink-rgb),0.72);
  backdrop-filter: blur(6px);
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
}

.post-card__new-indicator {
  position: absolute;
  top: var(--space-2);
  left: var(--space-2);
  font-size: 14px;
  line-height: 1;
}

.post-card__body {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-4);
}

.post-card__topic {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: var(--weight-semibold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--clr-accent);
  transition: color var(--dur-fast) var(--ease-out);
}

.post-card__topic:hover {
  color: var(--clr-accent-hover);
  text-decoration: underline;
}

.post-card__title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: var(--weight-bold);
  line-height: var(--leading-snug);
  color: var(--clr-ink);
  transition: color 250ms cubic-bezier(0.16, 1, 0.3, 1);
  min-height: calc(var(--text-base) * var(--leading-snug) * 2);
  display: -webkit-box;
  line-clamp: 2;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 2px;
}

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

.post-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--clr-ink-faint);
}

.post-card__author-name {
  color: var(--clr-ink-faint);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 9ch;
  transition: color var(--dur-fast) var(--ease-out);
}

.post-card__author-name:hover {
  color: var(--clr-accent);
}

.post-card__dot {
  flex-shrink: 0;
}

.post-card__date {
  flex-shrink: 0;
  white-space: nowrap;
}

.post-card__actions {
  display: flex;
  align-items: center;
  margin-left: auto;
  flex-shrink: 0;
}

.post-card__actions .like-btn,
.post-card__actions .bookmark-btn {
  width: 26px;
  height: 26px;
}

.post-card--author {
  flex-direction: column;
}

.post-card--author .post-card__author-media {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  overflow: hidden;
}

.post-card--author .post-card__author-media .post-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 500ms cubic-bezier(0.16, 1, 0.3, 1),
              filter 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

.post-card--author:hover .post-card__author-media .post-card__image {
  transform: scale(1.06);
  filter: brightness(1.04);
}

.post-card--author .post-card__author-badge {
  position: absolute;
  bottom: var(--space-2);
  right: var(--space-2);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: var(--weight-semibold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--clr-hero-text);
  background: rgba(var(--clr-ink-rgb), 0.72);
  backdrop-filter: blur(6px);
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
}

.post-card__title--author {
  min-height: 0;
  line-clamp: 1;
  -webkit-line-clamp: 1;
}

.post-card--author .post-card__body {
  gap: 2px;
  padding-bottom: var(--space-4);
}

.post-card__title--author {
  margin-bottom: 0;
}

@media (max-width: 900px) {
  .post-row {
    grid-auto-flow: row;
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .post-row {
    grid-auto-flow: row;
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .post-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding-block: var(--space-10);
  }
}

/* Topic card */

.topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-5);
  padding-block: var(--space-12);
}

.topic-card {
  display: block;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  background: var(--clr-surface);
  transition: transform var(--dur-normal) var(--ease-out),
              box-shadow var(--dur-normal) var(--ease-out),
              border-color var(--dur-normal) var(--ease-out);
}

.topic-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
  border-color: var(--clr-accent);
}

.topic-card__header {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
  overflow: hidden;
}

.topic-card__icon {
  font-size: var(--text-lg);
  flex-shrink: 0;
}

.topic-card__name {
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: var(--weight-bold);
  color: var(--clr-ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.topic-card__count {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: var(--clr-ink-faint);
  white-space: nowrap;
  flex-shrink: 0;
  margin-left: auto;
}

.topic-card__desc {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--clr-ink-muted);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

@media (max-width: 640px) {
  .topics-grid {
    grid-template-columns: 1fr;
  }
}

#topics-sections .section {
  padding-block: var(--space-12);
}

#topics-sections .divider {
  margin-block: 0;
}

/* Month-grouped sections */

.archive-month-section {
  margin-top: var(--space-12);
}

.archive-month-section--first {
  margin-top: 0;
}

.archive-month-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--clr-border);
}

.archive-month-header__title {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--clr-ink-faint);
}

/* Row/Grid section toggle (Show all / Show less) */

.post-grid--row-capped {
  grid-template-columns: repeat(4, 1fr);
  overflow: hidden;
}

.post-grid--row-capped > .post-card:nth-child(n + 5) {
  display: none;
}

.post-grid--row-capped.is-expanded {
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
}

.post-grid--row-capped.is-expanded > .post-card:nth-child(n + 5) {
  display: flex;
}

.section-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--clr-ink-muted);
  background: transparent;
  border: 1px solid var(--clr-border);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-pill);
  cursor: pointer;
  white-space: nowrap;
  transition: border-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out),
              background var(--dur-fast) var(--ease-out);
}

.section-toggle:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  background: var(--clr-accent-soft);
}

.section__header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-shrink: 0;
}

@media (max-width: 900px) {
  .archive-month-section .post-grid:not(.post-grid--row-capped),
  #topics-sections .post-grid:not(.post-grid--row-capped) {
    display: flex;
    grid-template-columns: none;
    overflow-x: auto;
    overflow-y: visible;
    gap: var(--space-6);
    padding-bottom: var(--space-2);
    scroll-snap-type: x proximity;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }

  .archive-month-section .post-grid:not(.post-grid--row-capped) > .post-card,
  #topics-sections .post-grid:not(.post-grid--row-capped) > .post-card {
    flex: 0 0 70%;
    max-width: 260px;
    scroll-snap-align: start;
  }

  .archive-month-section,
  #topics-sections .section {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    overflow-x: hidden;
  }

  .post-grid--row-capped:not(.is-expanded),
  .archive-month-section .post-grid:not(.post-grid--row-capped),
  #topics-sections .post-grid:not(.post-grid--row-capped) {
    width: 100%;
    max-width: 100%;
  }

  .post-grid--row-capped:not(.is-expanded) {
    display: flex;
    grid-template-columns: none;
    overflow-x: auto;
    overflow-y: visible;
    gap: var(--space-6);
    padding-bottom: var(--space-2);
    scroll-snap-type: x proximity;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }

  .post-grid--row-capped:not(.is-expanded) > .post-card {
    display: flex !important;
    flex: 0 0 70%;
    max-width: 260px;
    scroll-snap-align: start;
  }

  .post-grid--row-capped:not(.is-expanded) > .post-card:nth-child(n + 5) {
    display: none !important;
  }

  .post-grid--row-capped:not(.is-expanded),
  .archive-month-section .post-grid:not(.post-grid--row-capped),
  #topics-sections .post-grid:not(.post-grid--row-capped) {
    padding-top: var(--space-2);
    padding-bottom: var(--space-4);
  }

  .post-grid--row-capped:not(.is-expanded) > .post-card,
  .archive-month-section .post-grid:not(.post-grid--row-capped) > .post-card,
  #topics-sections .post-grid:not(.post-grid--row-capped) > .post-card,
  .post-row > .post-card {
    min-width: 0;
  }
}

@media (max-width: 640px) {
  .archive-month-section .post-grid:not(.post-grid--row-capped) > .post-card,
  #topics-sections .post-grid:not(.post-grid--row-capped) > .post-card {
    flex: 0 0 78%;
    max-width: 300px;
  }

  .post-grid--row-capped:not(.is-expanded) > .post-card {
    flex: 0 0 78%;
    max-width: 300px;
  }
}

/* Search result section headers */

#archive-grid .post-grid,
#archive-grid .topics-grid {
  margin-bottom: var(--space-4);
}

.search-section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-10);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--clr-border);
}

.search-section-header:first-child {
  margin-top: 0;
}

.search-section-header__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--clr-ink);
  position: relative;
}

.search-section-header__title::after {
  content: '';
  display: block;
  width: 28px;
  height: 2px;
  background: var(--clr-accent);
  border-radius: var(--radius-pill);
  margin-top: var(--space-1);
}

.search-section-header__count {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--clr-ink-faint);
  white-space: nowrap;
}

.search-author-card__role {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--clr-accent);
  margin-bottom: var(--space-1);
}

.search-card__cta {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--clr-accent);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  transition: color var(--dur-fast) var(--ease-out);
}

.search-card__cta:hover {
  color: var(--clr-accent-hover);
}

@media print {
  .related-posts,
  #related-posts-section {
    display: none !important;
  }
}