/* ══════════════════════════════════════
   CASE STUDIES — listing page
   Loaded via $page_css on case-studies.php
══════════════════════════════════════ */

.cs-hero {
  padding: 96px var(--pad-x) 64px;
  border-bottom: 1px solid var(--border);
}
.cs-hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 16px;
}
.cs-hero-title {
  font-size: var(--text-h1);
  line-height: var(--leading-h1);
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 16px;
}
.cs-hero-sub {
  font-size: 18px;
  line-height: 1.65;
  color: var(--ink-2);
  max-width: 560px;
}

/* ── Card grid ── */
.cs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.cs-card {
  background: var(--paper);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  transition: background 0.2s;
}
.cs-card:hover { background: rgba(13,12,9,0.025); }

.cs-card-cover {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}
.cs-card-cover--empty {
  aspect-ratio: 16 / 9;
  background: var(--border);
}

.cs-card-body {
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.cs-card-eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.cs-card-title {
  font-size: var(--text-h2);
  line-height: var(--leading-h2);
  font-weight: 700;
  color: var(--ink);
}

.cs-card-excerpt {
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink-2);
  flex: 1;
}

.cs-card-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.cs-card-chip {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 100px;
}

.cs-card-cta {
  font-size: 14px;
  font-weight: 600;
  color: var(--red);
}

.cs-empty {
  grid-column: 1 / -1;
  padding: 96px var(--pad-x);
  font-size: 16px;
  color: var(--ink-3);
}

/* ── Mobile ── */
@media (max-width: 768px) {
  .cs-hero { padding: 64px var(--pad-x-sm) 48px; }
  .cs-hero-sub { font-size: 16px; }
  .cs-grid { grid-template-columns: 1fr; }
  .cs-card-body { padding: 24px; }
  .cs-card-title { font-size: var(--text-h2); line-height: var(--leading-h2); }
  .cs-empty { padding: 64px var(--pad-x-sm); }
}