/* ============================================================
   Photo Gallery Component — Standalone Styles
   Dùng cho component <x-photo-gallery>
   CSS variables có thể override từ parent:
     --pg-border, --pg-accent, --pg-text-secondary, --pg-thumb-hover-shadow
   ============================================================ */

/* ── Gallery strip ────────────────────────────────────────── */
.dlvn-ref-gallery {
  --pg-border:          #c6d3c9;
  --pg-accent:          #059669;
  --pg-text-secondary:  #374151;
  --pg-thumb-shadow:    rgba(5, 150, 105, 0.18);

  grid-column: 1 / -1;
  width: 100%;
  min-width: 0;
  max-width: 100%;
  padding: 14px 16px 16px;
  background: none;
  border-radius: 12px;
  box-sizing: border-box;
}

.dlvn-ref-gallery-header {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--pg-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.dlvn-ref-track {
  display: flex;
  gap: 12px;
  min-width: 0;
  max-width: 100%;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
  scrollbar-color: var(--pg-border) transparent;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x mandatory;
}

.dlvn-ref-track::-webkit-scrollbar { height: 5px; }
.dlvn-ref-track::-webkit-scrollbar-thumb {
  background: var(--pg-border);
  border-radius: 10px;
}

.dlvn-ref-item {
  flex-shrink: 0;
  width: 140px;
  margin: 0;
  cursor: pointer;
  scroll-snap-align: start;
  transition: transform 0.18s;
}

.dlvn-ref-item:hover { transform: translateY(-3px); }

.dlvn-ref-thumb {
  width: 140px;
  height: 162px;
  border-radius: 8px;
  overflow: hidden;
  border: 2px solid var(--pg-border);
  background: #e5e7eb;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.dlvn-ref-item:hover .dlvn-ref-thumb {
  border-color: var(--pg-accent);
  box-shadow: 0 4px 16px var(--pg-thumb-shadow);
}

.dlvn-ref-thumb img {
  width: 100% !important;
  height: 100% !important;
  max-width: none !important;
  padding: 0 !important;
  margin: 0 !important;
  object-fit: cover;
  object-position: center top;
  display: block;
  transition: transform 0.3s ease;
}

.dlvn-ref-item:hover .dlvn-ref-thumb img { transform: scale(1.05); }

.dlvn-ref-item figcaption {
  font-size: 0.78rem;
  color: var(--pg-text-secondary);
  text-align: center;
  margin-top: 6px;
  font-weight: 600;
  line-height: 1.3;
  overflow-wrap: anywhere;
}

/* ── Lightbox ─────────────────────────────────────────────── */
.dlvn-lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,0.92);
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.dlvn-lightbox.dlvn-lightbox--open { display: flex; }

.dlvn-lb-overlay {
  position: absolute;
  inset: 0;
  cursor: zoom-out;
  z-index: 0;
}

.dlvn-lb-content {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 92vw;
  max-height: 82vh;
  z-index: 1;
}

.dlvn-lb-content img {
  max-width: min(90vw, 860px) !important;
  max-height: 80vh !important;
  width: auto !important;
  height: auto !important;
  padding: 0 !important;
  margin: 0 !important;
  border-radius: 10px;
  box-shadow: 0 8px 48px rgba(0,0,0,0.6);
  object-fit: contain;
  display: block;
  pointer-events: none;
}

.dlvn-lb-close {
  position: fixed;
  top: 16px;
  right: 22px;
  background: rgba(255,255,255,0.12);
  border: 2px solid rgba(255,255,255,0.3);
  color: #fff;
  font-size: 1.2rem;
  font-weight: 700;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
  z-index: 10001;
}

.dlvn-lb-close:hover { background: rgba(255,255,255,0.25); }

.dlvn-lb-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.12);
  border: 2px solid rgba(255,255,255,0.25);
  color: #fff;
  font-size: 2rem;
  line-height: 1;
  width: 46px;
  height: 54px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
  z-index: 10001;
  user-select: none;
}

.dlvn-lb-nav:hover { background: rgba(255,255,255,0.28); }

.dlvn-lb-prev { left: -62px; }
.dlvn-lb-next { right: -62px; }

.dlvn-lb-footer {
  position: relative;
  z-index: 1;
  margin-top: 14px;
  text-align: center;
}

.dlvn-lb-caption {
  color: rgba(255,255,255,0.9);
  font-size: 0.95rem;
  font-weight: 700;
}

.dlvn-lb-counter {
  color: rgba(255,255,255,0.5);
  font-size: 0.82rem;
  margin-top: 4px;
}

@media (max-width: 600px) {
  .dlvn-ref-gallery {
    padding: 12px;
  }
  .dlvn-ref-track {
    gap: 10px;
  }
  .dlvn-lb-prev { left: 6px; top: auto; bottom: 90px; transform: none; }
  .dlvn-lb-next { right: 6px; top: auto; bottom: 90px; transform: none; }
  .dlvn-lb-nav  { width: 42px; height: 46px; font-size: 1.7rem; }
}

/* ── Override gợi ý cho các trang dùng khác màu ────────────── */
/* Ví dụ thêm vào CSS trang: */
/*
.dltg-wrap .dlvn-ref-gallery {
  --pg-border:         #bfdbfe;
  --pg-accent:         #0284c7;
  --pg-thumb-shadow:   rgba(2, 132, 199, 0.18);
}
*/