/* ============================================
   Lightbox — full-screen image viewer
   Adds magnifying-glass cursor on hover and
   expands images into a dark overlay on click.
   ============================================ */

/* Magnifying-glass cursor on all content images */
.markdown-rendered img {
  cursor: zoom-in;
  transition: opacity 0.15s ease;
}

.markdown-rendered img:hover {
  opacity: 0.85;
}

/* Overlay backdrop */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.88);
  cursor: zoom-out;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.lightbox-overlay.is-visible {
  opacity: 1;
  visibility: visible;
}

/* Expanded image */
.lightbox-overlay img {
  max-width: 92vw;
  max-height: 92vh;
  border-radius: 4px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
  transform: scale(0.92);
  transition: transform 0.25s ease;
}

.lightbox-overlay.is-visible img {
  transform: scale(1);
}

/* Close hint (top-right) */
.lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.85rem;
  font-family: system-ui, sans-serif;
  pointer-events: none;
}