body {
  background: #0e0e0e;
  color: #f0f0f0;
  font-family: sans-serif;
  padding: 0;
  margin: 0;
}
#chat-container {
  max-width: 800px;
  margin: auto;
  padding: 20px;
}
#chat-box {
  height: 500px;
  overflow-y: scroll;
  background: #1e1e1e;
  padding: 10px;
  border-radius: 10px;
}
.user-msg, .ai-msg {
  margin: 10px 0;
}
#chat-form {
  display: flex;
  margin-top: 10px;
}
#user-input {
  flex: 1;
  padding: 10px;
  font-size: 1em;
}
button {
  padding: 10px;
  font-size: 1em;
  background: #0077c8;
  color: white;
  border: none;
  cursor: pointer;
}