#chat-input {
  min-width: 0;
}

#btn-chat-mic.chat-mic-button {
  flex: 0 0 64px;
  min-width: 64px;
  padding: 15px 18px;
  background: #ff6b6b;
  box-shadow: 0 6px 0 #c0392b;
  font-size: 1.35rem;
  line-height: 1;
}

#btn-chat-mic.chat-mic-button.is-recording {
  background: #e74c3c !important;
  box-shadow: 0 6px 0 #922b21 !important;
  animation: chat-mic-pulse 1s ease-in-out infinite;
}

#btn-chat-mic.chat-mic-button.is-transcribing {
  cursor: wait;
  opacity: 0.8;
}

@keyframes chat-mic-pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.08);
  }
}

@media (max-width: 640px) {
  #btn-chat-mic.chat-mic-button {
    flex-basis: 56px;
    min-width: 56px;
    padding: 13px 14px;
  }
}