I want to hide a button (or disable it) until the user has entered the right text in an input field. I am OK with solutions that have the "password" visible in the source as it's not a problem for this use case, but my constraints are that the entire solution needs to be compatible with my CMS carrd.co (documentation on in-line code blocks here: https://carrd.co/docs/building/embedding-custom-code)

To the best of my understanding (not a dev) some of the existing solutions I found on Stack Exchange don't work in this context (I tried a few, it's possible I didn't place the tags correctly or missed some similar basic step, but as it stands I am stuck)

Some similar questions: Enable a button on entering text in input field and Show / hide html based on prop type on input