.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 10px;
  gap: 0.5rem;
}

@media (max-width: 1024px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .gallery-grid { grid-template-columns: 1fr; }
}

.gallery-item {
  overflow: hidden;
  border-radius: 0.25rem;
  opacity: 0;
  animation: galleryFadeIn 0.5s ease forwards;
  position: relative;
}

.gallery-item--loading {
  background: linear-gradient(90deg, #1a1a1a 25%, #252525 50%, #1a1a1a 75%);
  background-size: 200% 100%;
  animation: galleryFadeIn 0.5s ease forwards, skeletonShimmer 1.5s ease-in-out infinite;
}

.gallery-item--short  { grid-row-end: span 24; }
.gallery-item--medium { grid-row-end: span 32; }
.gallery-item--tall   { grid-row-end: span 42; }

.gallery-item a {
  display: block;
  position: relative;
  width: 100%;
  height: 100%;
  cursor: pointer;
}

.gallery-item img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.4s ease, transform 0.5s ease;
}

.gallery-item img.gallery-img--loaded {
  opacity: 1;
}

.gallery-item:hover img.gallery-img--loaded {
  transform: scale(1.05);
}

.gallery-item--error {
  background: #1a1a1a;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gallery-item--error::after {
  content: '⚠';
  font-size: 1.5rem;
  color: #555;
}

.gallery-video-item video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s ease, transform 0.5s ease;
}

.gallery-video-item video.gallery-img--loaded {
  opacity: 1;
}

.gallery-video-item:hover video.gallery-img--loaded {
  transform: scale(1.05);
}

.play-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  background: rgba(0, 0, 0, 0.55);
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  transition: all 0.3s ease;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.play-overlay svg {
  width: 24px;
  height: 24px;
  margin-left: 2px;
  fill: #ffffff;
}

.gallery-video-item:hover .play-overlay {
  background: rgba(0, 0, 0, 0.75);
  border-color: rgba(255, 255, 255, 0.7);
  transform: translate(-50%, -50%) scale(1.1);
}

@keyframes galleryFadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.gallery-skeleton {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 10px;
  gap: 0.5rem;
}

@media (max-width: 1024px) {
  .gallery-skeleton { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .gallery-skeleton { grid-template-columns: 1fr; }
}

.skeleton-item {
  border-radius: 0.25rem;
  background: linear-gradient(90deg, #1a1a1a 25%, #252525 50%, #1a1a1a 75%);
  background-size: 200% 100%;
  animation: skeletonShimmer 1.5s ease-in-out infinite;
}

.skeleton-item--short  { grid-row-end: span 24; }
.skeleton-item--medium { grid-row-end: span 32; }
.skeleton-item--tall   { grid-row-end: span 42; }

@keyframes skeletonShimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.scroll-sentinel {
  display: flex;
  justify-content: center;
  padding: 2rem 0;
}

.loading-dots {
  display: flex;
  gap: 0.5rem;
}

.loading-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  animation: dotPulse 1.2s ease-in-out infinite;
}

.loading-dots span:nth-child(2) { animation-delay: 0.15s; }
.loading-dots span:nth-child(3) { animation-delay: 0.3s; }

@keyframes dotPulse {
  0%, 80%, 100% { opacity: 0.3; transform: scale(0.8); }
  40%           { opacity: 1;   transform: scale(1.2); }
}

.gallery-error {
  text-align: center;
  padding: 3rem 1rem;
  color: #9ca3af;
  font-size: 1.125rem;
}