.room-thinking {
  display: flex;
  align-items: center;
  gap: .65rem;
  padding: .75rem 1.25rem;
  border-top: 1px solid rgba(120, 140, 160, .14);
  color: var(--an-muted, #aeb9c8);
  font-size: .82rem;
}
.room-thinking[hidden] { display: none; }
.room-thinking-dots { display: inline-flex; gap: .22rem; align-items: center; }
.room-thinking-dots i {
  width: .36rem;
  height: .36rem;
  border-radius: 50%;
  background: #78e59a;
  animation: room-thinking-pulse 1.15s infinite ease-in-out;
}
.room-thinking-dots i:nth-child(2) { animation-delay: .15s; }
.room-thinking-dots i:nth-child(3) { animation-delay: .3s; }
@keyframes room-thinking-pulse {
  0%, 60%, 100% { opacity: .3; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-2px); }
}
@media (prefers-reduced-motion: reduce) {
  .room-thinking-dots i { animation: none; opacity: .8; }
}