/* gallery.css — 追加日: 2026-03-14 */

/* フィルターバー */
.gallery-filter {
  display: flex; flex-wrap: wrap; gap: 0.5rem;
  margin-bottom: 2.5rem;
}
.gf-btn {
  padding: 0.45rem 1.1rem;
  background: var(--panel); border: 1px solid var(--border);
  color: var(--text-dim); font-size: 0.82rem; letter-spacing: 0.06em;
  cursor: pointer; transition: all 0.2s;
  font-family: var(--font-body);
}
.gf-btn:hover, .gf-btn.active {
  color: var(--miku); border-color: var(--border-h);
  background: var(--miku-dim);
}

/* グリッド */
.gallery-grid {
  columns: 4; column-gap: 6px;
}
.gallery-item {
  break-inside: avoid; margin-bottom: 6px;
  position: relative; overflow: hidden; cursor: pointer;
  display: block;
}
.gallery-item img {
  width: 100%; display: block;
  transition: transform 0.5s ease;
}
.gallery-item-overlay {
  position: absolute; inset: 0;
  background: rgba(5,12,16,0.65);
  opacity: 0; transition: opacity 0.3s;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 0.5rem;
}
.gallery-item:hover img { transform: scale(1.05); }
.gallery-item:hover .gallery-item-overlay { opacity: 1; }
.gallery-caption {
  font-size: 0.78rem; color: var(--white);
  text-align: center; padding: 0 1rem;
  letter-spacing: 0.05em;
}
.gallery-zoom {
  width: 36px; height: 36px;
  border: 1px solid var(--miku); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--miku); font-size: 1.2rem;
}
.gallery-empty {
  text-align: center; padding: 5rem;
  color: var(--text-muted); font-family: var(--font-mono);
  font-size: 0.8rem; letter-spacing: 0.15em;
  border: 1px dashed var(--border);
}

/* ライトボックス */
.lb {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(3,8,14,0.96);
  backdrop-filter: blur(12px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity 0.3s;
}
.lb.open { opacity: 1; pointer-events: all; }
.lb-inner {
  max-width: 90vw; max-height: 90vh;
  display: flex; flex-direction: column; align-items: center; gap: 1rem;
}
.lb-inner img {
  max-width: 90vw; max-height: 80vh;
  object-fit: contain; display: block;
  border: 1px solid var(--border);
}
.lb-cap {
  font-size: 0.82rem; color: var(--text-dim);
  letter-spacing: 0.08em; text-align: center;
}
.lb-close {
  position: fixed; top: 1.5rem; right: 1.5rem;
  background: none; border: 1px solid var(--border);
  color: var(--text-dim); font-size: 1.2rem;
  width: 40px; height: 40px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s; z-index: 1;
}
.lb-close:hover { color: var(--miku); border-color: var(--border-h); }
.lb-prev, .lb-next {
  position: fixed; top: 50%; transform: translateY(-50%);
  background: rgba(5,12,16,0.7); border: 1px solid var(--border);
  color: var(--miku); font-size: 2rem; width: 48px; height: 80px;
  cursor: pointer; transition: all 0.2s; z-index: 1;
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(8px);
}
.lb-prev { left: 1rem; }
.lb-next { right: 1rem; }
.lb-prev:hover, .lb-next:hover { background: var(--miku-dim); border-color: var(--border-h); }

@media(max-width:768px) {
  .gallery-grid { columns: 2; }
}