I want a straightforward, single-purpose web page that lets visitors enter a promo code and press submit. The page must be responsive, load quickly on mobile, and validate the code field so only properly-formatted entries go through. After submission the system should: • Store each entry securely in a database that I can export as CSV at any time • Show a clean success / error message to the user • Send me an automatic email notification with the newly collected data Design can be minimalist—logo at the top, one centred form field, a submit button, and a brief privacy note underneath. Feel free to use whichever modern stack you prefer (plain PHP/MySQL, Node with Express, or a lightweight Python solution are all fine) as long as setup instructions are included so I can deploy on a standard shared host. Please hand over: 1. All front-end files (HTML, CSS, JS) 2. Back-end scripts and database schema 3. A short read-me documenting installation, environment variables, and how to export the data I’ll test by installing on my server and submitting a few codes; if everything stores, validates, and sends notifications correctly, the job is complete.