faux titlebar for frameless window / CSD

Problem description

the frameless window option/custom window decorations are kind of bad right now because (on linux & windows)

buttons are overlayed on top of content without having space made for them
there is no drag area other than the sidebar which is very unintuitive

Feature description

a custom "titlebar", which would have the drag css property (to make it draggable) and would contain the window decorations (no drag property)

here's mockups i made in gimp to demonstrate what i mean before anyone gets any funny ideas

store: mockup store page library: mockup library page

Alternatives

No response

Additional information

window buttons shouldn't change the cursor to pointer but leave it default, since they're not 'links' but 'buttons'. this is common design practice in ui

Heroic-Games-Launcher / HeroicGamesLauncher