/* ==========================================================================
   r2go4-image-gallery — Bildergalerie als Grid
   ========================================================================== */

.r2g-gallery {
  display: grid;
  grid-template-columns: repeat(var(--gallery-columns, 3), 1fr);
  gap: 1.5rem;
}

.r2g-gallery__item {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.r2g-gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.r2g-gallery__item:hover img {
  transform: scale(1.05);
}

@media (max-width: 991px) {
  .r2g-gallery {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
}

@media (max-width: 480px) {
  .r2g-gallery {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

/* ── Lightbox ─────────────────────────────────────────────────────────────
   Die Galeriekacheln sind auf der Startseite rund 380 px breit; auf einem
   Referenzfoto einer Fassadensanierung erkennt man darauf nichts. Klick
   oeffnet das Bild gross. Ohne JavaScript bleibt der Link zur Bilddatei. */

a.r2g-gallery__item {
  display: block;
  cursor: zoom-in;
}

.r2g-lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 3rem 1rem;
  background: rgba(0, 0, 0, 0.9);
}

.r2g-lightbox[hidden] { display: none; }

.r2g-lightbox__img {
  max-width: min(92vw, 1600px);
  max-height: 88vh;
  width: auto;
  height: auto;
  object-fit: contain;
}

.r2g-lightbox__close,
.r2g-lightbox__nav {
  background: none;
  border: 0;
  color: #fff;
  cursor: pointer;
  line-height: 1;
  padding: 0.5rem 1rem;
  opacity: 0.75;
  transition: opacity 0.2s ease;
}

.r2g-lightbox__close:hover,
.r2g-lightbox__nav:hover { opacity: 1; }

.r2g-lightbox__nav  { font-size: 3.5rem; }

.r2g-lightbox__close {
  position: absolute;
  top: 0.5rem;
  right: 1rem;
  font-size: 2.5rem;
}

@media (max-width: 600px) {
  .r2g-lightbox     { padding: 3rem 0.25rem; gap: 0.25rem; }
  .r2g-lightbox__nav { font-size: 2.25rem; padding: 0.25rem 0.5rem; }
}