/* One shared, passive semantic-reference preview card. */
.course-reference-preview-card {
  position: fixed;
  /* Native popovers default to inset: 0 with auto margins, which centers the
     card and overrides Floating UI's left/top coordinates. */
  inset: auto;
  margin: 0;
  color: var(--pst-color-text-base);
  background: var(--pst-color-surface);
  border: 1px solid var(--pst-color-border);
  border-radius: .35rem;
  box-shadow: 0 .5rem 1.5rem rgb(0 0 0 / .18);
  box-sizing: border-box;
  max-width: 500px;
  max-height: min(28rem, 70vh);
  overflow: auto;
  padding: .8rem 1rem;
  z-index: 2147483647;
}

.course-reference-preview-card:popover-open { display: block; }
.course-reference-preview-card.course-reference-preview-card--open { display: block; }
.course-reference-preview-card[hidden] { display: none; }
.course-reference-preview-card .admonition { margin: 0; }
.course-reference-preview-card .headerlink { display: none; }