body {
  font-family: Arial, sans-serif;
  background: #222;
  color: white;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.chat-container {
  width: 400px;
  background: #333;
  border-radius: 8px;
  box-shadow: 0 0 15px rgba(255,255,255,0.1);
  padding: 20px;
}

#chat-box {
  height: 300px;
  overflow-y: auto;
  border: 1px solid #444;
  padding: 10px;
  margin-bottom: 10px;
  background: #111;
}

.input-area {
  display: flex;
}

input[type="text"] {
  flex: 1;
  padding: 10px;
  border: none;
  border-radius: 4px;
}

button {
  padding: 10px;
  background: #ff4c4c;
  color: white;
  border: none;
  margin-left: 5px;
  border-radius: 4px;
  cursor: pointer;
}

button:hover {
  background: #ff1c1c;
}

.user {
  color: #4fc3f7;
  font-weight: bold;
}

.bot {
  color: #81c784;
  font-weight: bold;
}