body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #f4f6f8;
}

.chat-container {
  width: 100%;
  max-width: 400px;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background-color: white;
}

.messages {
  flex-grow: 1;
  padding: 16px;
  overflow-y: auto;
}

.message {
  margin-bottom: 12px;
}

.message.user {
  text-align: right;
  color: #007bff;
}

.message.ai {
  text-align: left;
  color: #333;
}

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

#user-input {
  flex-grow: 1;
  padding: 12px;
  border: none;
  border-top-left-radius: 8px;
}

button {
  padding: 12px;
  background-color: #007bff;
  color: white;
  border: none;
  cursor: pointer;
}