/* ============================================================
   AI Art - series collage layout
   ============================================================ */

.art-series-section {
  min-height: 100vh;
  background: var(--bg-s2);
  border-top: var(--border);
  border-bottom: var(--border);
}

.art-series-section + .art-series-section {
  margin-top: 72px;
}

.art-series-header {
  position: sticky;
  top: 0;
  height: 58px;
  padding: 0 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: var(--border);
  background: rgba(var(--bg-s2-rgb), 0.94);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  z-index: 4;
}

.art-series-count {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  text-transform: uppercase;
  font-family: var(--font-sans);
}

.art-collage {
  --art-grid-gap: 4px;
  --art-grid-row: 8px;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: var(--art-grid-gap);
  padding: 0 32px 32px;
  align-items: start;
}

.art-collage.is-masonry {
  grid-auto-rows: var(--art-grid-row);
}

.art-collage-item {
  margin: 0;
  background: #0c090b;
  border: var(--border);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.35);
}

.art-collage-item img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
}

.art-series-footer {
  height: 88px;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  border-top: var(--border);
  background: var(--bg-s2);
  z-index: 2;
}

.art-ghost-num {
  font-family: var(--font-serif);
  font-size: clamp(36px, 4.5vw, 58px);
  color: #dbbdca;
  font-weight: 400;
  line-height: 1;
  user-select: none;
}

@media (max-width: 767px) {
  .art-series-section + .art-series-section {
    margin-top: 48px;
  }

  .art-series-header,
  .art-series-footer {
    padding: 0 20px;
  }

  .art-collage {
    --art-grid-gap: 4px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 0 20px 20px;
  }

  .art-series-footer {
    height: 72px;
  }
}