.room-loading-overlay {
  box-sizing: border-box;
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: grid;
  place-items: center;
  padding: max(20px, env(safe-area-inset-top)) max(20px, env(safe-area-inset-right)) max(20px, env(safe-area-inset-bottom)) max(20px, env(safe-area-inset-left));
  background: rgba(8, 17, 27, .52);
  overscroll-behavior: contain;
  touch-action: none;
}
.room-loading-overlay[hidden] { display: none !important; }
.room-loading-panel {
  box-sizing: border-box;
  width: min(100%, 360px);
  max-height: 100%;
  overflow: auto;
  padding: 24px;
  border: 1px solid #69899a;
  border-radius: 20px;
  background: #142b38;
  color: #f3f7fa;
  text-align: center;
  box-shadow: 0 18px 60px rgba(0, 0, 0, .3);
  touch-action: pan-y;
}
.room-loading-title { margin: 20px 0 10px; font-size: 20px; }
.room-loading-stage { min-height: 1.5em; margin: 0; color: #d5f1ff; font-size: 16px; }
.room-loading-hint { margin: 10px 0 20px; color: #bccdd7; font-size: 14px; }
.room-loading-cancel {
  min-width: 44px;
  min-height: 44px;
  padding: 10px 18px;
  border: 1px solid #9fc0cf;
  border-radius: 10px;
  background: #244456;
  color: #fff;
  font: inherit;
  cursor: pointer;
}
.room-loading-cancel:focus-visible, .room-loading-panel:focus-visible { outline: 3px solid #ffdb8a; outline-offset: 4px; }
.room-loading-cancel:disabled { cursor: default; opacity: .65; }
.room-loading-door {
  width: 58px;
  height: 76px;
  margin: 0 auto;
  border: 3px solid #adc6d1;
  border-bottom: 0;
  background: #cce5e8;
  perspective: 180px;
}
.room-loading-door-leaf {
  position: relative;
  width: 100%;
  height: 100%;
  background: #5b8497;
  border: 1px solid #adc6d1;
  transform-origin: left center;
  transform: rotateY(-62deg);
  animation: room-loading-door-open 340ms ease-out both;
}
.room-loading-door-leaf::after { content: ''; position: absolute; right: 7px; top: 50%; width: 5px; height: 5px; border-radius: 50%; background: #ffdb8a; }
@keyframes room-loading-door-open { from { transform: rotateY(0); } to { transform: rotateY(-62deg); } }
@media (prefers-reduced-motion: reduce) { .room-loading-door-leaf { animation: none; } }