.viewer-actions {
  position: fixed;
  z-index: 1040;
  top: .65rem;
  right: 1rem;
  display: flex;
  align-items: center;
  gap: .5rem;
}
.viewer-actions .reader-logout-button,
.subnavbar-actions .pdf-export-button {
  display: inline-flex;
  min-height: 2.35rem;
  align-items: center;
  justify-content: center;
  padding: .45rem .8rem;
  border-radius: .45rem;
  box-shadow: 0 .25rem 1rem rgba(24,35,48,.16);
  font-size: .82rem;
  font-weight: 700;
  white-space: nowrap;
}
.lti-session-indicator {
  display: inline-flex;
  min-height: 2rem;
  align-items: center;
  gap: .45rem;
  padding: .35rem .65rem;
  border: 1px solid rgba(25, 135, 84, .22);
  border-radius: 999px;
  background: rgba(255, 255, 255, .94);
  color: #3f4d46;
  box-shadow: 0 .15rem .6rem rgba(24, 35, 48, .1);
  font-size: .75rem;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
}
.lti-session-dot {
  width: .45rem;
  height: .45rem;
  flex: 0 0 auto;
  border-radius: 50%;
  background: #198754;
  box-shadow: 0 0 0 .18rem rgba(25, 135, 84, .12);
}
.subnavbar-actions .pdf-export-button[aria-busy="true"] { cursor: wait; opacity: .78; }
.subnavbar-layout { display: flex; align-items: flex-start; gap: .75rem; }
.subnavbar-layout > nav { flex: 1; min-width: 0; }
.subnavbar-actions { display: flex; flex: 0 0 auto; flex-direction: column; align-items: flex-end; gap: .25rem; }
.subnavbar-actions .bd-sidebar-toggle { margin: 0; }
@media (max-width: 767.98px) {
  .viewer-actions { top: .45rem; right: .5rem; }
  .viewer-actions .reader-logout-button { display: none; }
  .lti-session-indicator { max-width: calc(100vw - 1rem); font-size: .7rem; }
}