/* This control requests native fullscreen; the slide canvas never reflows. */
.presentation-fullscreen {
  position: fixed;
  z-index: 30;
  bottom: 0;
  right: 0;
  padding: 10px;
  color: var(--text-primary);
  font: 12px/1.4 var(--font-mono);
}

.deck-fullscreen-toggle {
  min-height: 36px;
  padding: 7px 10px;
  border: 1px solid var(--border-hairline);
  border-radius: 0;
  background: var(--surface-page);
  color: var(--text-muted);
  cursor: pointer;
  font: inherit;
}

.deck-fullscreen-toggle:hover { color: var(--blue-700); border-color: var(--blue-600); }
.deck-fullscreen-toggle:focus-visible { outline: 2px solid var(--blue-600); outline-offset: -2px; }
.deck-fullscreen-toggle:disabled { cursor: wait; }

.deck-fullscreen-message {
  position: absolute;
  right: 10px;
  bottom: 100%;
  width: min(360px, calc(100vw - 20px));
  margin: 0;
  padding: 12px;
  border: 1px solid var(--border-hairline);
  background: var(--surface-page);
  font: 14px/1.4 var(--font-body);
}

.deck-fullscreen-message[hidden] { display: none; }

@media (hover: hover) {
  .presentation-fullscreen:not(:hover):not(:has(:focus-visible)):not(.has-message) { opacity: 0; }
}

@media (pointer: coarse) {
  .deck-fullscreen-toggle { min-width: 44px; min-height: 44px; }
}

@media print {
  .presentation-fullscreen { display: none !important; }
}