/* presenter.css — 발표자 UI(홈·전체화면 버튼) 스타일. 슬라이드 디자인엔 관여하지 않음 */

#presenter-ui {
  position: fixed;
  right: 16px;
  bottom: 64px;
  z-index: 2147483000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}
#presenter-ui.is-visible {
  opacity: 1;
  pointer-events: auto;
}

#presenter-ui .p-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(20, 20, 20, 0.72);
  color: #f5f5f5;
  cursor: pointer;
  padding: 0;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
#presenter-ui .p-btn:hover {
  background: rgba(50, 50, 50, 0.85);
}
#presenter-ui .p-btn svg {
  width: 18px;
  height: 18px;
}

/* 전체화면 아이콘 상태 전환 */
#presenter-ui .ic-exit { display: none; }
#presenter-ui.is-fullscreen .ic-enter { display: none; }
#presenter-ui.is-fullscreen .ic-exit { display: block; }

@media (prefers-reduced-motion: reduce) {
  #presenter-ui { transition: none; }
}