/* ============================================================
   Blog The Tech — "Topics" & "Tags" index pages
   assets/index-pages.css

   Shared by page-topics.php and page-tags.php — same page shell
   (breadcrumb + dark hero + body), different content in the body
   (a card grid for topics, a weighted pill cloud for tags).
   ============================================================ */

:root {
  --btt-ink:        #0d1117;
  --btt-ink-muted:  #4a5568;
  --btt-ink-faint:  #94a3b8;
  --btt-ground:     #f7f8fa;
  --btt-border:     #e8eaed;

  --btt-night:      #080e1a;

  --btt-accent:     #1d4ed8;
  --btt-accent-lt:  #3b82f6;
  --btt-accent-sky: #bfdbfe;

  --btt-radius-sm:  10px;
  --btt-radius-md:  16px;
  --btt-radius-lg:  24px;

  --btt-font:       'Plus Jakarta Sans', system-ui, sans-serif;
}

.btt-index { background: var(--btt-ground); min-height: 70vh; }

/* ── Breadcrumb (same visual language as category.php / tag.php) ── */
.btt-breadcrumb { background: var(--btt-night); padding: 10px 24px 0; }
.btt-breadcrumb__list {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; flex-wrap: wrap; gap: 6px;
  list-style: none; padding: 0;
  font-family: var(--btt-font); font-size: 11px; color: rgba(255,255,255,.35);
}
.btt-breadcrumb__list li { display: flex; align-items: center; gap: 6px; }
.btt-breadcrumb__list li + li::before { content: '/'; opacity: .3; }
.btt-breadcrumb__list a { color: rgba(255,255,255,.5); text-decoration: none; transition: color .15s ease; }
.btt-breadcrumb__list a:hover { color: #fff; }
.btt-breadcrumb__list [aria-current="page"] { color: rgba(255,255,255,.7); font-weight: 600; }

/* ── Hero ─────────────────────────────────────────────────── */
.btt-index-hero {
  background: var(--btt-night);
  padding: 32px 24px 36px;
  border-bottom: 1px solid rgba(255,255,255,.04);
}
.btt-index-hero__inner { max-width: 1200px; margin: 0 auto; }

.btt-index-hero__badge {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--btt-font); font-size: 11px; font-weight: 800;
  text-transform: uppercase; letter-spacing: 1.1px; color: var(--btt-accent-sky);
  margin-bottom: 10px;
}
.btt-index-hero__badge::before {
  content: ''; width: 18px; height: 2px;
  background: var(--btt-accent-lt); border-radius: 2px; display: inline-block;
}

.btt-index-hero__title {
  font-family: var(--btt-font); font-size: clamp(28px, 3.5vw, 44px);
  font-weight: 900; color: #f8fafc; line-height: 1.1; margin: 0 0 10px;
  letter-spacing: -.7px;
}
.btt-index-hero__title span { color: var(--btt-accent-sky); }

.btt-index-hero__desc {
  font-family: var(--btt-font); font-size: 14.5px; line-height: 1.7;
  color: rgba(255,255,255,.5); max-width: 560px; margin: 0 0 22px;
}

.btt-index-hero__stats { display: flex; gap: 28px; flex-wrap: wrap; }
.btt-index-hero__stat { display: flex; flex-direction: column; gap: 2px; }
.btt-index-hero__stat-n {
  font-family: var(--btt-font); font-size: 26px; font-weight: 900;
  color: #f8fafc; line-height: 1;
}
.btt-index-hero__stat-l {
  font-family: var(--btt-font); font-size: 10.5px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .8px; color: rgba(255,255,255,.4);
}

/* ── Body ─────────────────────────────────────────────────── */
.btt-index-body { max-width: 1200px; margin: 0 auto; padding: 32px 24px 72px; }

.btt-index-empty {
  text-align: center; padding: 56px 24px; color: var(--btt-ink-faint);
  font-family: var(--btt-font); font-size: 14px;
}

/* ── Topic card grid (page-topics.php) ───────────────────────── */
.btt-topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.btt-topic-card {
  display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--btt-border);
  border-radius: var(--btt-radius-md); padding: 22px;
  text-decoration: none;
  transition: box-shadow .2s ease, transform .18s ease, border-color .2s ease;
}
.btt-topic-card:hover {
  box-shadow: 0 8px 24px rgba(15,23,42,.08);
  transform: translateY(-2px);
  border-color: var(--btt-accent-sky);
}

.btt-topic-card__icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: #eff6ff; border: 1px solid #dbeafe;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 14px;
}

.btt-topic-card__name {
  font-family: var(--btt-font); font-size: 17px; font-weight: 800;
  color: var(--btt-ink); margin: 0 0 6px; letter-spacing: -.2px;
}

.btt-topic-card:hover .btt-topic-card__name { color: var(--btt-accent); }

.btt-topic-card__desc {
  font-family: var(--btt-font); font-size: 13px; line-height: 1.6;
  color: var(--btt-ink-muted); margin: 0 0 16px; flex: 1;
}

.btt-topic-card__footer {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 14px; border-top: 1px solid var(--btt-border);
}

.btt-topic-card__count {
  font-family: var(--btt-font); font-size: 11.5px; font-weight: 700;
  color: var(--btt-ink-faint);
}

.btt-topic-card__cta {
  font-family: var(--btt-font); font-size: 12.5px; font-weight: 700;
  color: var(--btt-accent);
}

/* ── Tag cloud (page-tags.php) ────────────────────────────── */
.btt-tagcloud {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px 12px;
  background: #fff; border: 1px solid var(--btt-border);
  border-radius: var(--btt-radius-lg); padding: 32px;
}

.btt-tagcloud__pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 14px; border-radius: 999px;
  border: 1.5px solid var(--btt-border); background: var(--btt-ground);
  font-family: var(--btt-font); font-weight: 700; line-height: 1.4;
  color: var(--btt-ink-muted); text-decoration: none;
  transition: border-color .18s ease, color .18s ease, background .18s ease, transform .15s ease;
}
.btt-tagcloud__pill:hover {
  border-color: var(--btt-accent-lt); color: var(--btt-accent);
  background: #eff6ff; transform: translateY(-1px);
}
.btt-tagcloud__pill span {
  font-size: 10.5px; font-weight: 700; color: var(--btt-ink-faint);
  background: #fff; padding: 1px 6px; border-radius: 999px;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 640px) {
  .btt-index-hero { padding: 24px 16px 28px; }
  .btt-index-body { padding: 24px 16px 48px; }
  .btt-topic-grid { grid-template-columns: 1fr; }
  .btt-tagcloud { padding: 20px; }
}