html and javascript is forked from https://www.useapassphrase.com/

css sytle is adopted solarized dark https://ethanschoonover.com/solarized/

czech words are from http://ucnk.korpus.cz/retrograd10.php

xkcd inspiration of it all https://xkcd.com/936/

more sophisticated version with larger dictionary and different generation modes written in C#: https://github.com/urza/PassphraseGenCZCsharp/

use at your own risk