ProsperChinoda/online-course-app ? reverse-engineered prompt

Build me a simple online course app in Django that shows a clean, working example of a course website.

I want a homepage, a course listing page, and a way to view an individual course with its details. If it makes sense, include basic user accounts so people can sign in and see their progress or enrolled courses. Keep the design simple but polished, and make sure the app actually runs from start to finish.

Please organize it like a real Django project, with sensible templates, views, models, and routing. If you need to check current Django docs online, go for it. I mainly want a solid demo project that shows good Django skills and is easy to understand.