src/components/ChatBox.css

.typing-indicator {
  display: flex;
  gap: 6px;
  padding: 0.5rem;
  margin-left: 1rem;
  align-items: center;
}

.typing-indicator .dot {
  width: 8px;
  height: 8px;
  background-color: #ccc;
  border-radius: 50%;
  animation: blink 1.4s infinite both;
}

.typing-indicator .dot:nth-child(2) {
  animation-delay: 0.2s;
}
.typing-indicator .dot:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes blink {
  0%, 80%, 100% { opacity: 0; }
  40% { opacity: 1; }
}