/* ── MasonryGrid — stable CSS Grid layout ── */

.masonry-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

/* item */
.masonry-item {
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  cursor: zoom-in;
  aspect-ratio: 4 / 3;

  /* scroll-reveal initial state */
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.masonry-item--revealed {
  opacity: 1;
  transform: translateY(0);
}

.masonry-item__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: filter 0.25s ease;
}

.masonry-item:hover .masonry-item__img {
  filter: brightness(1.08);
}

/* hover overlay */
.masonry-item__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  padding: 8px 10px;
  background: linear-gradient(transparent 60%, rgba(15, 12, 9, 0.7));
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

.masonry-item:hover .masonry-item__overlay {
  opacity: 1;
}

.masonry-item__label {
  font: 11px var(--tv-mono);
  color: var(--tv-text);
  letter-spacing: 0.04em;
}

/* sentinel */
.masonry-sentinel {
  height: 1px;
  grid-column: 1 / -1;
}

/* loading dots */
.masonry-loading {
  grid-column: 1 / -1;
  display: flex;
  justify-content: center;
  gap: 6px;
  padding: 24px 0;
}

.masonry-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--tv-muted);
  animation: masonry-pulse 1.2s ease-in-out infinite;
}

.masonry-dot:nth-child(2) {
  animation-delay: 0.15s;
}

.masonry-dot:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes masonry-pulse {
  0%, 80%, 100% { opacity: 0.25; transform: scale(0.8); }
  40% { opacity: 1; transform: scale(1); }
}

/* end message */
.masonry-end {
  grid-column: 1 / -1;
  text-align: center;
  font: 11px var(--tv-mono);
  letter-spacing: 0.12em;
  color: var(--tv-dim);
  padding: 32px 0 16px;
  margin: 0;
}

/* responsive */
@media (max-width: 1024px) {
  .masonry-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .masonry-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* reduced motion */
@media (prefers-reduced-motion: reduce) {
  .masonry-item {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .masonry-item__img,
  .masonry-item__overlay {
    transition: none;
  }

  .masonry-dot {
    animation: none;
  }
}