/* === Shared image lightbox ===
 * Click-to-enlarge for inline content images, paired with scripts/base/lightbox.js.
 *
 * The overlay is a fixed, flex-centerd box sized off the viewport, so the image
 * stays vertically and horizontally centerd and re-fits itself on rotation with
 * no JS involved — a landscape phone just gets a wider box for the same image. */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
  background: var(--scrim);
  cursor: zoom-out;
  opacity: 0;
  transition: opacity 0.15s ease;
  overscroll-behavior: contain;
  -webkit-tap-highlight-color: transparent;
}

.lightbox[hidden] { display: none; }
.lightbox.open { opacity: 1; }

.lightbox .lightbox-image {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 6px;
  cursor: default;
}

.lightbox-close {
  position: absolute;
  top: 10px;
  right: 14px;
  background: transparent;
  border: 0;
  padding: 4px 10px;
  font-size: 30px;
  line-height: 1;
  color: var(--text-3);
  cursor: pointer;
}

.lightbox-close:hover { color: var(--text-hi); }
.lightbox-close:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* The page underneath is pinned rather than merely `overflow: hidden`, since
 * iOS keeps scrolling the body behind a fixed overlay otherwise. The scroll
 * offset is re-applied on close by lightbox.js. */
body.lightbox-open {
  position: fixed;
  left: 0;
  right: 0;
  width: 100%;
  overflow: hidden;
}

/* Phone in landscape: trim the frame so a wide chart runs nearly edge to edge. */
@media (orientation: landscape) and (max-height: 560px) {
  .lightbox { padding: 6px 10px; }
  .lightbox-close { top: 0; right: 2px; font-size: 26px; }
}

@media (orientation: portrait) and (max-width: 560px) {
  .lightbox { padding: 14px; }
}

/* --- Affordance on the page images themselves --- */

img[data-lightbox],
img.lightboxable,
figure img {
  cursor: zoom-in;
}

[data-no-lightbox] img,
img[data-no-lightbox] {
  cursor: inherit;
}

img[data-lightbox]:focus-visible,
img.lightboxable:focus-visible,
figure img:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .lightbox { transition: none; }
}