body {
  font-family: Arial, sans-serif;
  background-color: #f2f2f2;
  display: flex;
  justify-content: center;
  padding: 2rem;
}

.chat-container {
  width: 100%;
  max-width: 500px;
  background-color: white;
  padding: 1rem;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

#chat {
  height: 400px;
  overflow-y: scroll;
  border: 1px solid #ccc;
  padding: 0.5rem;
  margin-bottom: 1rem;
}

.user, .bot {
  margin-bottom: 0.5rem;
}

.user { color: blue; }
.bot { color: green; }