Layout suggestion for ENFOLD

Dear Support Team,

I have received a request from a customer to reprogram a web site based on Worpress. Since I have used almost exclusively ENFOLD as a theme for my websites, I would also like to use this theme again for this website. However, at first glance I did not find a template that I can use as a basis for his design ideas.

So I would like to give you a picture of his idea and please let me know if an implementation within the ENFOLD theme is possible here:
Home: https://osmosis.de/support/website_vorlage1.pdf
The start page should be structured in such a way that a full-screen slider with selected project pictures runs through in the background. The logo is placed at the top left. The navigation menu should be arranged left-justified and sorted into 2 blocks as shown: Above are the three navigation elements “Aktuell” “Über Uns” and “Kontakt”. Underneath, at a certain distance, the menu items “Wettbewerbe” “Projekte” and “Kategorie”.

If you click on the menu item “Kategorie”, for example, a submenu should open here (as well as in “Wettbewerbe” and “Projekte”): the menu items “Parkanlagen” “Plätze” “Wohnen” open and the active menu item should be black change to white and the background of the menu item will turn from white to black accordingly.

For example, if you have decided on a category, a grid of a project overview appears: https://osmosis.de/support/website_vorlage3.pdf
This grid does not represent a weakness for me, I know that would be implemented in ENFOLD. However, the main menu should be hidden and only by clicking on the LOGO you come back to the HOME page and can select again.

Which template of ENFOLD could I use as a basis to implement this layout? And is it possible to adjust the navigation curcuit then via css accordingly? Similarly, the full-screen slider in the background?
Thank you for your information.