/* Click-to-expand images (paired with theme/lightbox.js) */
img.zoomable {
  cursor: zoom-in;
}

img.zoomable:focus-visible {
  outline: 2px solid var(--icons-hover);
  outline-offset: 3px;
}

html.lightbox-open {
  overflow: hidden;
}

.lightbox {
  /* Fill the viewport; the default <dialog> box is small and centred. */
  width: 100vw;
  height: 100vh;
  max-width: none;
  max-height: none;
  margin: 0;
  padding: 1.5rem;
  box-sizing: border-box;
  border: none;
  /* Paint the dim on the dialog itself; it already fills the viewport. */
  background: rgba(0, 0, 0, 0.96);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  cursor: zoom-out;
}

.lightbox[open] {
  display: flex;
}

.lightbox::backdrop {
  background: transparent;
}

.lightbox-image {
  display: block;
  max-width: 100%;
  max-height: calc(100vh - 5rem);
  width: auto;
  height: auto;
  object-fit: contain;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
}

.lightbox-caption {
  margin: 0;
  color: #eee;
  font-size: 0.95rem;
  text-align: center;
}

.lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.5);
  color: #fff;
  font-size: 1.2rem;
  cursor: pointer;
}

.lightbox-close:hover,
.lightbox-close:focus-visible {
  border-color: #fff;
}

@media (prefers-reduced-motion: no-preference) {
  .lightbox[open] .lightbox-image {
    animation: lightbox-in 0.18s ease-out;
  }

  @keyframes lightbox-in {
    from {
      opacity: 0;
      transform: scale(0.96);
    }
  }
}