/* Home + section grid CSS — lede + section-tabs + 카드. */

.lede { margin: 0 0 2rem; }
.lede h1 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
}
.lede p { font-size: 1rem; color: var(--ink-muted); margin: 0; }

.section-tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin: 1.5rem 0 2rem;
}
.section-tabs a {
  font-size: 0.875rem;
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--ink-muted);
  text-decoration: none;
  transition: border-color 0.15s, color 0.15s;
  flex-shrink: 0;
}
.section-tabs a:hover { border-color: #6366f1; color: var(--ink); }
.section-tabs a.active { border-color: var(--ink); color: var(--ink); font-weight: 600; }

.grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}
@media (min-width: 640px) { .grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 960px) { .grid { grid-template-columns: 1fr 1fr 1fr; } }

.card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}
.card:hover {
  border-color: var(--line-strong);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  transform: translateY(-1px);
}
/*
 * Card cover — relies on the intrinsic ratio set by `width=1536 height=1024`
 * HTML attrs on <img>. The placeholder div has no intrinsic ratio so it
 * keeps its own `aspect-ratio: 3/2` to reserve the right slot.
 */
.card img {
  width: 100%;
  height: auto;
  display: block;
  background: linear-gradient(135deg, #f3f4f6, #e5e7eb);
}
.card .cover-placeholder {
  width: 100%;
  aspect-ratio: 3 / 2;
  background: linear-gradient(135deg, #f3f4f6, #e5e7eb);
  display: block;
}
.card-body { padding: 1rem; }
.card-section {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.card-title {
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.4;
  margin: 0.4rem 0;
  color: var(--ink);
}
.card-desc {
  font-size: 0.875rem;
  color: var(--ink-muted);
  line-height: 1.55;
  margin: 0;
}
.card-meta { font-size: 0.75rem; color: var(--ink-faint); margin-top: 0.75rem; }

.empty {
  padding: 4rem 1rem;
  text-align: center;
  border: 1px dashed var(--line-strong);
  border-radius: 0.75rem;
  color: #4b5563;
}
.empty .muted { color: var(--ink-faint); font-size: 0.875rem; margin-top: 0.5rem; }