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I don't know what epub3 allows and what not, but all that you want to do is possible with html, css and javascript. But not everyone is comfortable with javascript in a document format. And how to implement that on eReaders etc. I sometimes wonder, why there isn't a one file format for "websites" that is sellable. For now something like that has to be wrapped in an app. But epub3 should at least make some of the things you want available. But making webapps out of books would even allows things such as quizzes, interactive coding etc. available.
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