#ai-chatbox { position: fixed; bottom: 20px; right: 20px; width: 300px; background: #fff; border: 1px solid #ccc; font-family: sans-serif; z-index: 9999; }
#ai-chat-header { background: #333; color: #fff; padding: 10px; font-weight: bold; }
#ai-chat-body { height: 200px; overflow-y: auto; padding: 10px; }
#ai-chat-input { width: 100%; padding: 10px; border: none; border-top: 1px solid #ccc; }
.user-msg { text-align: right; margin-bottom: 5px; }
.ai-msg { text-align: left; margin-bottom: 5px; }
.ai-msg.error { color: red; }