body {
  background: #1a1a1a;
  font-family: sans-serif;
  margin: 0;
  color: #fff;
}

.chat-container {
  max-width: 600px;
  margin: 40px auto;
  border: 2px solid red;
  border-radius: 12px;
  overflow: hidden;
  background-color: #2a2a2a;
  display: flex;
  flex-direction: column;
  height: 90vh;
}

.chat-header {
  background-color: red;
  padding: 15px;
  text-align: center;
}

.chat-box {
  padding: 15px;
  flex: 1;
  overflow-y: auto;
  background-color: #1e1e1e;
}

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

.message.user {
  background-color: #ff4d4d;
  margin-left: auto;
}

.message.bot {
  background-color: #333;
  margin-right: auto;
}

.chat-form {
  display: flex;
  border-top: 2px solid red;
}

.chat-form input {
  flex: 1;
  padding: 15px;
  border: none;
  outline: none;
  font-size: 1em;
  background: #111;
  color: #fff;
}

.chat-form button {
  background: red;
  color: white;
  border: none;
  padding: 15px 20px;
  cursor: pointer;
  font-weight: bold;
}