/* Case study tile (homepage) */
.case-study-tile { display: block; }
.case-study-tile a { display: block; color: inherit; }
.case-study-tile__image {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--rule);
  border-radius: 4px;
  overflow: hidden;
  transition: transform 0.2s ease;
}
.case-study-tile__image[data-placeholder] {
  background: repeating-linear-gradient(45deg, var(--rule), var(--rule) 12px, #d8d4c8 12px, #d8d4c8 24px);
}
.case-study-tile__image img { width: 100%; height: 100%; object-fit: cover; display: block; }
.case-study-tile a:hover .case-study-tile__image { transform: translateY(-2px); }
.case-study-tile__meta { padding-top: var(--sp-2); }
.case-study-tile__meta h2 { margin-top: var(--sp-1); }

/* Case study layout */
.cs-header { padding: var(--sp-6) 0 var(--sp-5); }
.cs-header .label { color: var(--accent); }
.cs-header h1 { font-size: clamp(2.5rem, 6vw, 4rem); margin-top: var(--sp-2); max-width: 900px; }
.cs-header .summary { font-size: var(--fs-lg); color: var(--text-muted); margin-top: var(--sp-3); max-width: 640px; }

.cs-meta {
  display: flex;
  gap: var(--sp-5);
  margin-top: var(--sp-4);
  flex-wrap: wrap;
  padding-top: var(--sp-3);
  border-top: 1px solid var(--rule);
  font-size: var(--fs-sm);
}
.cs-meta dt { color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.12em; font-size: var(--fs-xs); font-weight: 500; }
.cs-meta dd { margin-top: 4px; }

.cs-section { max-width: 900px; margin: 0 auto; padding: var(--sp-5) var(--gutter); }
.cs-section .section-label {
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: var(--sp-3);
}

.cs-image { margin: var(--sp-4) auto; max-width: 100%; }
.cs-image img { width: 100%; border-radius: 3px; }
.cs-image figcaption { color: var(--text-muted); font-size: var(--fs-sm); margin-top: var(--sp-1); }

.cs-image--full { max-width: none; margin-left: calc(-1 * var(--gutter)); margin-right: calc(-1 * var(--gutter)); }

.cs-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-2); margin: var(--sp-4) 0; }

.cs-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--sp-4) 0;
  border-top: 1px solid var(--rule);
  margin-top: var(--sp-6);
}
.cs-nav a { color: var(--accent); }

/* Gallery grid — used by ASU Hub and /work */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}
.gallery-tile {
  background: var(--rule);
  aspect-ratio: 4 / 3;
  cursor: pointer;
  overflow: hidden;
  border-radius: 2px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.gallery-tile:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
.gallery-tile img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* Filter chips */
.filter-chips { display: flex; gap: var(--sp-1); flex-wrap: wrap; margin: var(--sp-4) 0 var(--sp-3); }
.chip {
  font-size: var(--fs-sm);
  padding: 6px 14px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}
.chip:hover { border-color: var(--text-muted); color: var(--text); }
.chip[aria-pressed="true"] { background: var(--accent); color: var(--bg); border-color: var(--accent); }
.chip .count { opacity: 0.7; margin-left: 6px; font-feature-settings: "tnum"; }

.archive-summary { color: var(--text-muted); font-size: var(--fs-sm); margin-top: var(--sp-2); }

/* Lightbox overlay */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(26, 26, 26, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease;
}
.lightbox[aria-hidden="false"] { opacity: 1; pointer-events: auto; }
.lightbox img { max-width: min(96vw, 1400px); max-height: 90vh; display: block; border-radius: 3px; box-shadow: 0 20px 60px rgba(0,0,0,0.4); }
.lightbox__close {
  position: absolute;
  top: 20px;
  right: 24px;
  font-size: var(--fs-xl);
  color: var(--bg);
  line-height: 1;
  padding: 8px 12px;
  cursor: pointer;
}
.lightbox__close:hover { color: #fff; }