/* Fotogalerie — mřížka náhledů alba a lightbox (načítá se jen na stránkách alb) */

.foto-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 14px;
}
.foto-grid a.foto {
  display: block;
  aspect-ratio: 4 / 3;
  border-radius: 14px;
  overflow: hidden;
  background: #eef2f6;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.10);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.foto-grid a.foto:hover,
.foto-grid a.foto:focus-visible {
  transform: scale(1.03);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.18);
}
.foto-grid a.foto img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Overlay lightboxu */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 10000; /* nad cookie lištou (.sa-cookie má 9999) */
  background: rgba(12, 15, 20, 0.94);
  display: flex;
  align-items: center;
  justify-content: center;
}
.lightbox[hidden] { display: none; }
.lightbox img {
  max-width: calc(100vw - 120px);
  max-height: calc(100vh - 110px);
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  user-select: none;
}
.lightbox button {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 26px;
  line-height: 1;
  cursor: pointer;
  transition: background 0.2s ease;
}
.lightbox button:hover,
.lightbox button:focus-visible {
  background: rgba(255, 255, 255, 0.28);
}
.lb-close { top: 16px; right: 16px; }
.lb-prev  { left: 16px; top: 50%; transform: translateY(-50%); }
.lb-next  { right: 16px; top: 50%; transform: translateY(-50%); }
.lb-counter {
  position: absolute;
  top: 26px;
  left: 22px;
  color: rgba(255, 255, 255, 0.75);
  font-size: 15px;
  letter-spacing: 0.5px;
}
.lb-caption {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  max-width: min(90vw, 700px);
  color: rgba(255, 255, 255, 0.9);
  font-size: 15px;
  text-align: center;
}
.lb-caption:empty { display: none; }

@media (max-width: 640px) {
  .foto-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .lightbox img { max-width: 100vw; max-height: calc(100vh - 130px); border-radius: 0; }
  /* Na mobilu šipky dolů do rohů, ať nepřekrývají fotku (listuje se i swipem) */
  .lb-prev, .lb-next { top: auto; bottom: 56px; transform: none; }
  .lb-prev { left: 20px; }
  .lb-next { right: 20px; }
  .lb-caption { bottom: 120px; }
}