body {
  font-family: Arial, sans-serif;
  background: #f4f4f9;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.chat-container {
  width: 400px;
  background: #fff;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

#messages {
  height: 300px;
  overflow-y: auto;
  border: 1px solid #ddd;
  padding: 10px;
  margin-bottom: 10px;
  background: #fafafa;
}

#chat-form {
  display: flex;
}

#message {
  flex: 1;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}

button {
  padding: 10px 15px;
  border: none;
  background: #007bff;
  color: white;
  border-radius: 5px;
  cursor: pointer;
  margin-left: 5px;
}

button:hover {
  background: #0056b3;
}