owaies/Online_Examination_System ? reverse-engineered prompt

Build me a simple online examination system website that runs in the browser and feels clean and easy to use.

I want students to be able to log in, see available exams, start a test, answer multiple choice questions, submit it, and get their score at the end. I also want an admin side where I can create exams, add questions and answers, set time limits, and review basic results. Keep the interface modern and straightforward, with a home page, login page, dashboard, exam taking screen, and results page.

Please make it work well on desktop and mobile, and use the existing Next.js project structure. If you need to check current best practices or docs while building it, go ahead and look them up online. Keep the first version simple but usable, and wire up whatever sample data or mock flow is needed so I can click through the full experience right away.