/**
 * Progresywne ładowanie galerii — placeholder, infinite scroll, przycisk „Pokaż więcej”.
 */

.sop-media-item {
  content-visibility: auto;
  contain-intrinsic-size: 600px 450px;
}

.sop-media-img {
  background: var(--realizacje-gallery-frame-bg, #1c1e21);
  transition: opacity 0.35s ease;
}

.sop-media-img:not(.is-loaded) {
  opacity: 0.35;
}

.sop-media-img.is-loaded {
  opacity: 1;
}

.sop-gallery-more {
  padding: clamp(20px, 4vw, 32px) 0 clamp(28px, 5vw, 48px);
  text-align: center;
}

.sop-gallery-more__btn {
  min-height: 48px;
  touch-action: manipulation;
}

.sop-gallery-more__hint {
  margin: 12px 0 0;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.55);
}

.sop-gallery-more__btn[hidden] {
  display: none;
}

.sop-gallery-sentinel {
  height: 1px;
  width: 100%;
  pointer-events: none;
  visibility: hidden;
}

.sop-media-gallery.is-loading-more .sop-gallery-sentinel {
  visibility: visible;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sop-media-gallery.is-loading-more .sop-gallery-sentinel::after {
  content: "";
  width: 28px;
  height: 28px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-top-color: var(--brand-green, #448c7b);
  border-radius: 50%;
  animation: sop-gallery-spin 0.75s linear infinite;
}

@keyframes sop-gallery-spin {
  to {
    transform: rotate(360deg);
  }
}

.sop-media-img.is-error {
  opacity: 0.2;
}

/* Mobile: niższe kafle = mniej pikseli na ekran */
@media (max-width: 768px) {
  .sop-media-gallery .realizacje-gallery__item img,
  .sop-media-gallery .sop-media-img {
    height: clamp(180px, 42vw, 320px);
    min-height: 180px;
  }

  .realizacje-gallery__grid {
    gap: 2px;
  }
}

@media (max-width: 480px) {
  .sop-media-gallery .realizacje-gallery__item img,
  .sop-media-gallery .sop-media-img {
    height: clamp(160px, 48vw, 280px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .sop-media-img {
    transition: none;
  }

  .sop-media-gallery.is-loading-more .sop-gallery-sentinel::after {
    animation: none;
    border-top-color: rgba(255, 255, 255, 0.35);
  }
}