vedant340/Ai-Chatbot ? reverse-engineered prompt

Build me a simple AI chat app where users can type messages and get replies in a clean chat interface.

I want the conversation to be saved so if I refresh or come back later, I can see the previous chat history. Please make it work with a backend and a frontend, using a normal modern web app setup, and store the conversations in MongoDB.

The app should feel polished and easy to use, with a chat window, message bubbles, loading state while the bot is thinking, and a way to start a new chat or clear the current one. Keep the design responsive so it works on desktop and mobile.

If you need to check the latest docs for anything, go ahead and look them up online. Please wire everything together so the frontend talks to the backend properly and the whole thing runs without me having to do much manual setup.