:root {
  --gallery-bg: oklch(9% 0.1 240);
  --zoom-bg: oklch(10% 0.1 240);
}

body {
  margin: 0;
  height: 100vh;
  display: grid;
  place-items: center;
  padding-inline: 2rem;
  background-color: var(--gallery-bg);
  overflow: hidden;
}

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

.gallery-item img {
  width: 100%;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.gallery-item.fullscreen img {
  width: 80vw;
  height: 80vh;
  object-fit: cover;
  border-radius: 0;
  view-transition-name: zoom-image;
}

::view-transition-old(zoom-image) {
  animation: fade-out 0.9s ease forwards;
}

::view-transition-new(zoom-image) {
  animation: fade-in 0.9s ease forwards;
}

@keyframes fade-in {
  from {
    opacity: 0;
    transform: scale(0.8);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes fade-out {
  from {
    opacity: 1;
    transform: scale(1);
  }

  to {
    opacity: 0;
    transform: scale(1.1);
  }
}