/* =====================================================
   Smart Gallery Lightbox – gallery.css
   ===================================================== */

/* ── Variables ── */
:root {
  --sg-radius: 10px;
  --sg-gap: 12px;
  --sg-accent: #e8b86d;
  --sg-dark: #111114;
  --sg-overlay: rgba(10, 10, 15, 0.96);
  --sg-transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Grid ── */
.sg-gallery {
  display: grid;
  grid-template-columns: repeat(var(--sg-cols, 3), 1fr);
  gap: var(--sg-gap);
  padding: 8px 0;
}

/* ── Vignette ── */
.sg-item {
  margin: 0;
  overflow: hidden;
  border-radius: var(--sg-radius);
  cursor: pointer;
  position: relative;
  background: #1a1a20;
  aspect-ratio: 4 / 3;
  outline: none;
}

.sg-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(232,184,109,0.18) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--sg-transition);
  border-radius: var(--sg-radius);
}

.sg-item:hover::after,
.sg-item:focus::after {
  opacity: 1;
}

.sg-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  image-rendering: auto;
  transition: transform var(--sg-transition), filter var(--sg-transition);
}

.sg-item:hover img,
.sg-item:focus img {
  transform: scale(1.05);
  filter: brightness(1.08);
}

.sg-item figcaption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  color: #fff;
  font-size: 0.78rem;
  padding: 20px 10px 8px;
  transform: translateY(100%);
  transition: transform var(--sg-transition);
  border-radius: 0 0 var(--sg-radius) var(--sg-radius);
}

.sg-item:hover figcaption {
  transform: translateY(0);
}

/* Focus ring */
.sg-item:focus-visible {
  box-shadow: 0 0 0 3px var(--sg-accent);
}

/* ── Lightbox overlay ── */
.sg-lightbox {
  position: fixed;
  inset: 0;
  z-index: 999999;
  background: var(--sg-overlay);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.sg-lightbox[hidden] {
  display: none !important;
}

.sg-lightbox.sg-lb-visible {
  opacity: 1;
}

/* ── Stage central ── */
.sg-lb-stage {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  max-width: calc(100vw - 160px);
  width: 100%;
  position: relative;
  min-height: 0;
}

.sg-lb-img {
  max-width: 100%;
  max-height: calc(100vh - 220px);
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.7);
  opacity: 0;
  transform: scale(0.96);
  transition: opacity 0.22s ease, transform 0.22s ease;
}

.sg-lb-img.sg-img-ready {
  opacity: 1;
  transform: scale(1);
}

.sg-lb-caption {
  color: rgba(255,255,255,0.65);
  font-size: 0.85rem;
  margin: 10px 0 0;
  text-align: center;
  min-height: 1.2em;
}

.sg-lb-counter {
  position: absolute;
  top: -36px;
  right: 0;
  color: rgba(255,255,255,0.4);
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.05em;
}

/* ── Bouton Fermer ── */
.sg-lb-close {
  position: absolute;
  top: 18px;
  right: 22px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  color: #fff;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--sg-transition), transform var(--sg-transition);
  z-index: 10;
}

.sg-lb-close:hover {
  background: rgba(232,184,109,0.25);
  transform: rotate(90deg);
}

/* ── Flèches ── */
.sg-lb-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  color: #fff;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  font-size: 1.4rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--sg-transition), transform var(--sg-transition);
  z-index: 10;
  flex-shrink: 0;
}

.sg-lb-prev { left: 12px; }
.sg-lb-next { right: 12px; }

.sg-lb-arrow:hover {
  background: rgba(232,184,109,0.3);
}

.sg-lb-arrow:active {
  transform: translateY(-50%) scale(0.93);
}

.sg-lb-arrow:disabled {
  opacity: 0.25;
  cursor: not-allowed;
}

/* ── Bande de vignettes (strip) ── */
.sg-lb-strip {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  max-width: 100%;
  padding: 14px 4px 4px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.2) transparent;
  align-items: center;
  justify-content: flex-start;
}

.sg-lb-strip::-webkit-scrollbar { height: 4px; }
.sg-lb-strip::-webkit-scrollbar-track { background: transparent; }
.sg-lb-strip::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.2); border-radius: 2px; }

.sg-strip-thumb {
  flex-shrink: 0;
  width: 62px;
  height: 62px;
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color var(--sg-transition), opacity var(--sg-transition), transform var(--sg-transition);
  opacity: 0.5;
}

.sg-strip-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
  display: block;
}

.sg-strip-thumb:hover {
  opacity: 0.85;
  transform: scale(1.06);
}

.sg-strip-thumb.sg-active {
  border-color: var(--sg-accent);
  opacity: 1;
  transform: scale(1.1);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .sg-gallery {
    grid-template-columns: repeat(min(var(--sg-cols, 3), 2), 1fr);
  }
  .sg-lb-arrow {
    width: 40px;
    height: 40px;
    font-size: 1.1rem;
  }
  .sg-lb-prev { left: 6px; }
  .sg-lb-next { right: 6px; }
  .sg-lb-stage {
    max-width: calc(100vw - 110px);
  }
  .sg-strip-thumb {
    width: 48px;
    height: 48px;
  }
}

@media (max-width: 480px) {
  .sg-gallery {
    grid-template-columns: repeat(min(var(--sg-cols, 3), 2), 1fr);
    gap: 8px;
  }
}