/*--------------------------------------------------------------
# Lightbox galerie

Celý markup .chatky-lightbox-* vytváří až js/site.js po kliknutí na
dlaždici - ve zdrojovém HTML ho nenajdeš, přesto je CSS živé.
Třídy .is-active, .is-loading přepíná tentýž skript.
--------------------------------------------------------------*/

.chatky-lightbox-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100000;
  background: rgba(0, 0, 0, 0.92);
  align-items: center;
  justify-content: center;
}

.chatky-lightbox-overlay.is-active { display: flex; }

.chatky-lightbox-spinner {
  display: none;
  width: 48px;
  height: 48px;
  border: 4px solid rgba(255, 255, 255, 0.25);
  border-top-color: #fff;
  border-radius: 50%;
  animation: chatky-lightbox-spin 0.8s linear infinite;
}

.chatky-lightbox-overlay.is-loading .chatky-lightbox-spinner { display: block; }

.chatky-lightbox-overlay.is-loading .chatky-lightbox-img { display: none; }

@keyframes chatky-lightbox-spin {
  to { transform: rotate(360deg); }
}

.chatky-lightbox-img {
  max-width: 90vw;
  max-height: 90vh;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: var(--lt-radius);
}

.chatky-lightbox-close,
.chatky-lightbox-prev,
.chatky-lightbox-next {
  position: absolute;
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  line-height: 1;
}

.chatky-lightbox-close {
  top: 24px;
  right: 24px;
  font-size: 40px;
}

.chatky-lightbox-prev,
.chatky-lightbox-next {
  top: 50%;
  transform: translateY(-50%);
  font-size: 32px;
  padding: 12px;
}

.chatky-lightbox-prev { left: 12px; }

.chatky-lightbox-next { right: 12px; }

@media (max-width: 600px) {
  .chatky-lightbox-close { top: 12px; right: 12px; font-size: 32px; }
  .chatky-lightbox-prev, .chatky-lightbox-next { font-size: 24px; padding: 8px; }
}