My site is broken after activating SSL

Hello,
so this should be something small, but I don't knooow! I need to be live and this SLL certificate just drives me mad...

Can anybody help what could be possibly wrong?
Site url is: https://nasekavarny.cz/
The whole wp-admin area and some other stuff is just under the footer and oh my god, these errors in console...

Please, anybody?