/* Keep the photo inside the available viewport without changing its proportions. */
#lightbox.lh-lightbox {
  position: fixed;
  inset: 0;
  margin: auto;
  box-sizing: border-box;
  width: min(1200px, calc(100vw - 24px));
  max-width: calc(100vw - 24px);
  height: min(900px, calc(100vh - 24px));
  height: min(900px, calc(100dvh - 24px));
  max-height: calc(100vh - 24px);
  max-height: calc(100dvh - 24px);
  min-width: 0;
  min-height: 0;
  padding: 0;
  overflow: hidden;
}

#lightbox.lh-lightbox[open] {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto minmax(0, 1fr) auto;
}

#lightbox .lightbox-toolbar {
  min-width: 0;
  height: 64px;
  gap: 10px;
  padding: 10px 16px;
}

#lightbox .lightbox-toolbar h2 {
  flex: 1 1 0;
  min-width: 0;
  max-width: none;
}

#lightbox .lightbox-toolbar span,
#lightbox .lightbox-toolbar button {
  flex: 0 0 auto;
}

#lightbox .lightbox-toolbar button {
  width: 44px;
  height: 44px;
}

#lightbox .lightbox-stage {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-rows: minmax(0, 1fr);
  align-items: stretch;
  min-width: 0;
  min-height: 0;
  height: auto;
  gap: 12px;
  padding: 12px;
  overflow: hidden;
}

#lightbox .lightbox-stage > button {
  position: static;
  align-self: center;
  justify-self: center;
  width: 44px;
  height: 44px;
}

#lightbox #gallery-prev { grid-column: 1; grid-row: 1; }
#lightbox #gallery-next { grid-column: 3; grid-row: 1; }

#lightbox .lightbox-image-area {
  grid-column: 2;
  grid-row: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}

#lightbox .lightbox-image-area img {
  display: block;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  object-position: center;
}

/* Deliberate zoom scrolls inside the photo area; the dialog stays within the window. */
#lightbox .lightbox-image-area.zoomed {
  display: block;
  overflow: auto;
}

#lightbox .lightbox-image-area.zoomed img {
  width: 200%;
  height: auto;
  max-width: none;
  max-height: none;
}

#lightbox .lightbox-thumbs {
  justify-content: flex-start;
  height: 80px;
  min-width: 0;
  min-height: 0;
  gap: 9px;
  padding: 10px 12px;
  overflow-x: auto;
  overflow-y: hidden;
}

#lightbox .lightbox-thumbs button:first-child { margin-inline-start: auto; }
#lightbox .lightbox-thumbs button:last-child { margin-inline-end: auto; }

@media (max-width: 680px) {
  #lightbox .lightbox-toolbar {
    height: 56px;
    gap: 6px;
    padding: 6px 10px;
  }
  #lightbox .lightbox-stage {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    padding: 6px;
  }
  #lightbox .lightbox-image-area { grid-column: 1; }
  #lightbox .lightbox-stage > button {
    position: absolute;
    bottom: 12px;
  }
  #lightbox #gallery-prev { left: 12px; }
  #lightbox #gallery-next { right: 12px; }
}

@media (max-height: 480px) {
  #lightbox .lightbox-toolbar {
    height: 52px;
    padding-block: 4px;
  }
  #lightbox .lightbox-stage { padding-block: 4px; }
  #lightbox .lightbox-thumbs {
    height: 62px;
    padding-block: 9px;
  }
  #lightbox .lightbox-thumbs button { height: 42px; width: 58px; }
}