.typing-indicator {
  display: flex;
  align-items: center;
  height: 24px;
  margin-left: 12px;
}
.typing-indicator span {
  width: 8px;
  height: 8px;
  background: #3b82f6;
  border-radius: 50%;
  display: inline-block;
  margin: 0 2px;
  opacity: 0.4;
  animation: typing-indicator 1.2s infinite;
}
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typing-indicator {
  0%, 80%, 100% { opacity: 0.4; transform: scale(0.8);}
  40% { opacity: 1; transform: scale(1.2);}
}