body {
  background-color: #222;
  font-family: Arial, Helvetica, sans-serif;
}

.chat-container {
  background-color: #2a2a2a;
  border: 1px solid #4f4f4f;
  border-radius: 5px;
  box-shadow: 0 0 5px #888;
  margin: 50px auto;
  max-width: 600px;
  padding: 20px;
}

.chat-container h1 {
  font-size: 24px;
  margin-bottom: 20px;
  text-align: center;
  color: #fff;
}

#chat-log {
  height: 300px;
  overflow: auto;
  padding: 10px;
  margin-bottom: 20px;
}

.chat-bubble {
  border-radius: 5px;
  padding: 10px;
  margin-bottom: 10px;
  max-width: 80%;
}

.user-bubble {
  background-color: #5a58a8;
  color: #fff;
  align-self: flex-end;
}

.ai-bubble {
  background-color: #4f4f4f;
  color: #fff;
  align-self: flex-start;
}

#chat-form {
  display: flex;
}

#user-input {
  flex: 1;
  padding: 10px;
  border: 1px solid #4f4f4f;
  border-radius: 5px;
  margin-right: 10px;
  color: #fff;
  background-color: #333;
}

input[type="submit"] {
  background-color: #5a58a8;
  border: none;
  color: #fff;
  padding: 10px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  border-radius: 5px;
  cursor: pointer;
}