/* Buttons (unchanged) */
.filter-btn {
  padding: 0.5rem 1.2rem;
  border-radius: 999px;
  background: white;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
  transition: all 0.3s var(--ease);
}
.filter-btn:hover {
  background: var(--accent-1);
  color: #111;
}
.filter-btn.active {
  background: var(--accent-2);
  color: white;
}

/* Gallery grid */
#gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  grid-auto-rows: 1fr;
}

/* Gallery item */
.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 1rem;
  cursor: pointer;
  aspect-ratio: 1/1; /* Square items */
  opacity: 0; /* Start hidden */
  transform: translateY(20px); /* subtle slide-up */
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.gallery-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.gallery-item img {
  width: 100%;
  height: auto;
  aspect-ratio: 1/1;
  object-fit: cover;
  display: block;
  transition: filter 0.4s ease;
}

/* Hover state */
.gallery-item:hover img {
  filter: brightness(1.2) saturate(1.3); /* only filter */
}

/* Shimmer overlay */
.gallery-item::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    120deg,
    transparent,
    rgba(255, 255, 255, 0.4),
    transparent
  );
}
.gallery-item:hover::after {
  animation: shimmer 0.8s forwards;
}

@keyframes shimmer {
  100% {
    left: 200%;
  }
}