/* =========================================================
   LIGHTBOX (prohlížeč galerie)
   ========================================================= */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: none;
  grid-template-rows: 1fr auto;
  gap: 12px;
  background: rgba(10, 18, 13, 0.96);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  padding: max(16px, env(safe-area-inset-top)) 16px max(16px, env(safe-area-inset-bottom));
}
.lightbox[aria-hidden="false"] { display: grid; animation: lbIn .28s var(--ease); }
@keyframes lbIn { from { opacity: 0; } to { opacity: 1; } }

.lb-stage {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
  position: relative;
}
.lb-stage img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: var(--r-sm);
  box-shadow: 0 30px 70px rgba(0,0,0,.6);
}
.lb-caption {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-data);
  font-size: .85rem;
  color: var(--paper-soft);
  background: rgba(10,18,13,.6);
  padding: .35rem .9rem;
  border-radius: var(--r-pill);
}

.lb-thumbs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 6px 2px;
  justify-content: center;
  scrollbar-width: thin;
}
.lb-thumbs img {
  width: 74px; height: 56px;
  object-fit: cover;
  border-radius: var(--r-sm);
  opacity: .5;
  cursor: pointer;
  border: 2px solid transparent;
  flex: 0 0 auto;
  transition: opacity .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}
.lb-thumbs img:hover { opacity: .85; transform: translateY(-2px); }
.lb-thumbs img.active { opacity: 1; border-color: var(--amber); }

.lb-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px; height: 48px;
  display: grid;
  place-items: center;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(143,176,162,.3);
  color: var(--paper-text);
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.3rem;
  transition: background .2s var(--ease), border-color .2s var(--ease);
  z-index: 2;
}
.lb-btn:hover { background: rgba(233,163,25,.18); border-color: var(--amber); }
.lb-prev { left: 12px; }
.lb-next { right: 12px; }

.lb-close {
  position: absolute;
  top: max(14px, env(safe-area-inset-top));
  right: 16px;
  width: 46px; height: 46px;
  display: grid;
  place-items: center;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(143,176,162,.3);
  color: var(--paper-text);
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.4rem;
  z-index: 3;
  transition: transform .25s var(--ease), background .2s var(--ease);
}
.lb-close:hover { background: rgba(233,163,25,.18); transform: rotate(90deg); }

@media (max-width: 600px) {
  .lb-btn { width: 40px; height: 40px; }
  .lb-thumbs img { width: 60px; height: 46px; }
}