/*!
 * US LAYER — Installation Gallery
 * Reusable photo gallery + lightbox for blog posts
 * ================================================== */

/* ── Grid ───────────────────────────────────────────────────── */
.install-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

/* ── Gallery item ────────────────────────────────────────────── */
.gallery-item {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  background: #0f172a;
  aspect-ratio: 3 / 4;
  cursor: zoom-in;
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.12);
  transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1),
              box-shadow 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}
.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 40px rgba(15, 23, 42, 0.2);
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.gallery-item:hover img {
  transform: scale(1.05);
}

/* ── Caption overlay ─────────────────────────────────────────── */
.gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.65rem 1rem;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.75) 0%, transparent 100%);
  color: #fff;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1.4;
}
.gallery-caption i { margin-right: 0.3rem; opacity: 0.85; }

/* ── Landscape variant ───────────────────────────────────────── */
.install-gallery.landscape .gallery-item {
  aspect-ratio: 4 / 3;
}

/* ── Square variant ──────────────────────────────────────────── */
.install-gallery.square .gallery-item {
  aspect-ratio: 1 / 1;
}

/* ── Lightbox overlay ────────────────────────────────────────── */
.lb-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.92);
  z-index: 10000;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.lb-overlay.active {
  display: flex;
  animation: lbFadeIn 0.18s ease;
}
@keyframes lbFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.lb-overlay img {
  max-width: 96vw;
  max-height: 92vh;
  object-fit: contain;
  border-radius: 10px;
  box-shadow: 0 32px 80px rgba(0, 0, 0, 0.7);
  animation: lbSlideUp 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}
@keyframes lbSlideUp {
  from { opacity: 0; transform: translateY(16px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.lb-close {
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  color: #fff;
  font-size: 2.25rem;
  line-height: 1;
  cursor: pointer;
  background: none;
  border: none;
  opacity: 0.75;
  transition: opacity 0.15s, transform 0.15s;
  padding: 0;
}
.lb-close:hover {
  opacity: 1;
  transform: rotate(90deg) scale(1.1);
}