body {
  font-family: sans-serif;
  background: #f5f5f5;
  margin: 0;
  padding: 0;
  display: flex;
  height: 100vh;
  justify-content: center;
  align-items: center;
}

#chat-container {
  width: 100%;
  max-width: 500px;
  height: 90vh;
  display: flex;
  flex-direction: column;
  border: 2px solid #29adbb;
  border-radius: 12px;
  background: white;
  overflow: hidden;
}

#chat-box {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
}

.chat-message {
  margin-bottom: 12px;
}

.chat-message.user {
  text-align: right;
  color: #333;
}

.chat-message.bot {
  text-align: left;
  color: #29adbb;
}

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

#user-input {
  flex: 1;
  padding: 12px;
  border: none;
  font-size: 16px;
}

button {
  padding: 0 16px;
  border: none;
  background: #29adbb;
  color: white;
  font-size: 18px;
  cursor: pointer;
}