frontend/src/App.css

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 1rem;
  font-family: Arial, Helvetica, sans-serif;
}
.controls {
  margin-bottom: 1rem;
}
.controls label {
  margin-right: 1rem;
}
.chat-box {
  border: 1px solid #ccc;
  min-height: 300px;
  padding: 0.5rem;
  margin-bottom: 1rem;
  overflow-y: auto;
}
.msg {
  margin-bottom: 0.5rem;
}
.msg.assistant {
  color: blue;
}
.msg.user {
  color: green;
}
.input-area {
  display: flex;
  gap: 0.5rem;
}
textarea {
  flex-grow: 1;
}
.error {
  color: red;
  margin-bottom: 0.5rem;
}