.toolbar-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
  color: white;
}

.toolbar-btn:hover {
  transform: scale(1.05);
}

#btnLeave {
  border-radius: 24px;
  width: auto;
}

#remoteVideo {
  width: 100%;
  height: 100%;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* Responsive local video */
@media (max-width: 640px) {
  #localVideo {
    width: 120px;
    height: 90px;
  }
}