/* ==========================================================================
   Public gallery grid + lightbox
   ========================================================================== */

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.gallery-grid figure {
  margin: 0;
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 1 / 1;
}
.gallery-grid button {
  display: block;
  width: 100%;
  height: 100%;
  padding: 0;
  cursor: zoom-in;
}
.gallery-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 700ms var(--ease);
}
.gallery-grid button:hover img,
.gallery-grid button:focus-visible img { transform: scale(1.07); }
.gallery-grid figure::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(0deg, rgba(0,0,0,0.4), transparent 50%);
  opacity: 0;
  transition: opacity var(--dur-sm) var(--ease);
  pointer-events: none;
}
.gallery-grid button:hover + figcaption,
.gallery-grid figure:hover::after { opacity: 1; }
.gallery-grid figcaption {
  position: absolute;
  left: 14px; bottom: 12px; right: 14px;
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--dur-sm) var(--ease), transform var(--dur-sm) var(--ease);
  pointer-events: none;
  text-shadow: 0 2px 10px rgba(0,0,0,0.6);
}
.gallery-grid figure:hover figcaption { opacity: 1; transform: translateY(0); }

.gallery-grid figure:nth-child(6n+1) { grid-column: span 2; grid-row: span 2; }

.gallery-empty {
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  padding: clamp(60px, 10vw, 120px) 24px;
  text-align: center;
  color: var(--text-muted);
}
.gallery-empty i { font-size: 2rem; color: var(--accent); margin-bottom: 18px; }
.gallery-empty p { font-size: 1.05rem; }

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: rgba(4,4,5,0.94);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-md) var(--ease), visibility var(--dur-md);
}
.lightbox.is-open { opacity: 1; visibility: visible; }
.lightbox__figure {
  position: relative;
  max-width: min(92vw, 1200px);
  max-height: 86vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.lightbox__img {
  max-width: 100%;
  max-height: 78vh;
  width: auto; height: auto;
  border-radius: var(--radius-sm);
  box-shadow: 0 40px 90px -30px rgba(0,0,0,0.7);
  opacity: 0;
  transform: scale(0.97);
  transition: opacity var(--dur-sm) var(--ease), transform var(--dur-sm) var(--ease);
}
.lightbox__img.is-loaded { opacity: 1; transform: scale(1); }
.lightbox__caption {
  margin-top: 16px;
  color: var(--text-muted);
  font-size: 0.92rem;
  text-align: center;
}
.lightbox__close {
  position: absolute;
  top: -8px; right: -8px;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  display: flex; align-items: center; justify-content: center;
  transition: background var(--dur-sm) var(--ease);
}
.lightbox__close:hover { background: var(--accent); }
.lightbox__arrow {
  position: fixed;
  top: 50%;
  translate: 0 -50%;
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  display: flex; align-items: center; justify-content: center;
  transition: background var(--dur-sm) var(--ease);
}
.lightbox__arrow:hover { background: var(--accent); border-color: var(--accent); }
.lightbox__arrow--prev { left: clamp(12px, 3vw, 40px); }
.lightbox__arrow--next { right: clamp(12px, 3vw, 40px); }
.lightbox__counter {
  position: fixed;
  bottom: 24px;
  left: 50%;
  translate: -50% 0;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

@media (max-width: 900px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid figure:nth-child(6n+1) { grid-column: span 2; grid-row: span 1; aspect-ratio: 16/10; }
  .lightbox__arrow { width: 42px; height: 42px; }
  .lightbox__arrow--prev { left: 8px; }
  .lightbox__arrow--next { right: 8px; }
}