PHP Mobile Trivia Webapp

I have the concept for a lightweight trivia game and I’m ready to see it running as a small PHP-based webapp optimised strictly for mobile browsers. The core flow is straightforward: visitors land on the site, register or sign in, and jump straight into multiple-choice trivia rounds that pull questions from a simple database. Scores should update instantly so players can track their progress between sessions.

Here’s what I need delivered:

• Full PHP source with clear comments, a minimal MySQL/MariaDB schema for users, questions and scores, plus any seed data you use for testing.
• A responsive mobile-first interface (plain PHP templating, Bootstrap or a similar lightweight CSS framework—your choice as long as the experience feels snappy on iOS and Android browsers).
• Basic authentication: email + password registration, login, password reset, and session handling; no social logins required.
• Admin endpoint or script I can reach to add/edit trivia questions later.
• Short README or install guide so I can drop the files on a standard LAMP stack and be up and running quickly.

Keep it clean, keep it simple, and please stick to vanilla PHP (no heavy full-stack frameworks). If you have a small live demo or previous PHP mini-games in your portfolio, I’d love to see them when you bid.