/* ==========================================================================
   Doplňkový stylopis pro stránky fotoalb.
   Prohlížeč fotografií je řešen pouze pomocí CSS (:target) – bez JavaScriptu.
   ========================================================================== */

.album-mrizka {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: .75rem;
  list-style: none;
  margin: 1.5rem 0;
  padding: 0;
}
.album-mrizka li { margin: 0; }

.album-mrizka a {
  display: block;
  border: 1px solid var(--ramecek);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bila);
  box-shadow: var(--stin);
  transition: transform .15s ease, box-shadow .15s ease;
}
.album-mrizka a:hover,
.album-mrizka a:focus-visible {
  transform: translateY(-3px);
  box-shadow: var(--stin-vyssi);
}
.album-mrizka img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* --------------------------------------------------- zvětšená fotografie */
.lupa {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100;
  padding: 1rem;
  align-items: center;
  justify-content: center;
}
.lupa:target { display: flex; }

.lupa__pozadi {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, .88);
}

.lupa__obsah {
  position: relative;
  margin: 0;
  max-width: min(1100px, 100%);
  max-height: 100%;
  display: flex;
  flex-direction: column;
  gap: .75rem;
}
.lupa__obsah img {
  max-width: 100%;
  max-height: calc(100vh - 8rem);
  width: auto;
  margin: 0 auto;
  object-fit: contain;
  border-radius: var(--radius);
  background: #000;
}

.lupa__obsah figcaption {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: .5rem 1rem;
  color: #fff;
  font-weight: 700;
}

.lupa__ovladani {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: .4rem 1rem;
  color: #fff;
  background: var(--modra-t);
  border-radius: var(--radius);
  text-decoration: none;
}
.lupa__ovladani:hover,
.lupa__ovladani:focus-visible { filter: brightness(1.2); color: #fff; text-decoration: underline; }
.lupa__zavrit { background: var(--cervena-t); }

@media (max-width: 520px) {
  .album-mrizka { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
  .lupa { padding: .5rem; }
  .lupa__obsah img { max-height: calc(100vh - 10rem); }
}

@media print {
  .lupa { display: none !important; }
}