Arka-2001/Currency-Converter ? reverse-engineered prompt

Build me a simple currency converter app where I can enter an amount, pick a source currency and a target currency, and instantly see the converted value.

I want it to feel clean and easy to use, with a nice modern layout and a bit of visual polish, maybe using the existing images if they help. It should pull live exchange rates from an API, so the conversions are current, and it should let me swap the two currencies quickly. If something goes wrong with the API or a currency is unavailable, show a helpful message instead of breaking.

Please make it work well on both desktop and mobile, and keep the UI straightforward so anyone can use it without thinking. If you need to check current docs or best practices for the API or React setup, feel free to look them up.