body {
  font-family: Arial, sans-serif;
  background: #f2f2f2;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.chat-container {
  width: 350px;
  background: white;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  overflow: hidden;
}

.chat-header {
  background: #4CAF50;
  color: white;
  padding: 10px;
  text-align: center;
  font-weight: bold;
}

.chat-box {
  height: 300px;
  padding: 10px;
  overflow-y: auto;
}

.message {
  margin: 8px 0;
  padding: 8px 10px;
  border-radius: 5px;
  max-width: 80%;
}

.user {
  background: #DCF8C6;
  margin-left: auto;
}

.bot {
  background: #eee;
}

.chat-input {
  display: flex;
  border-top: 1px solid #ccc;
}

.chat-input input {
  flex: 1;
  padding: 10px;
  border: none;
  outline: none;
}

.chat-input button {
  padding: 10px 15px;
  border: none;
  background: #4CAF50;
  color: white;
  cursor: pointer;
}