MartMbithi/Digital_Library ? reverse-engineered prompt

Build me a digital library management system that works as a web app and also feels usable as a desktop style app. I want a clean landing page, a login screen, and separate access for super user, staff, and students. The system should let staff manage books and library records, while students can log in and browse or search the catalog easily. Use a simple modern admin style interface, and make the layout responsive so it works well on different screen sizes.

Please set it up so the main pages, shared header and sidebar pieces, and book related screens all work together cleanly. If you need to, look up current docs online for anything that helps you finish it properly. Also make sure the app is wired to a database and that the basic demo logins from the README work. I want something functional and polished, not just a static mockup.