body {
  font-family: Arial, sans-serif;
  background: #111;
  color: white;
}

.chat-container {
  width: 400px;
  margin: 40px auto;
  background: #1e1e1e;
  padding: 15px;
  border-radius: 10px;
}

#chat-box {
  height: 300px;
  overflow-y: auto;
  background: #000;
  padding: 10px;
  margin-bottom: 10px;
}

.user { color: #4caf50; }
.ai { color: #00bcd4; }

.input-area {
  display: flex;
}

input {
  flex: 1;
  padding: 8px;
}

button {
  padding: 8px;
  cursor: pointer;
}