Floating windows on top of full screen window

[fuzunspm]

Hello,

I am writing to request assistance with a specific window management configuration in Hyprland that I have been unable to implement, despite extensive searching for a solution.

My goal is to replicate a behavior I was able to achieve while using Sway. I wish to display a floating window (for example, a web browser) on top of a fullscreen application (such as a game) while maintaining a particular set of interactions.

The desired functionality is as follows:

Maintain Background State: The fullscreen application in the background should remain active and not lose focus when I interact with the floating window.

Floating Window Interaction: I need to be able to scroll and use the floating window while it is overlaid on the fullscreen application.

Keyboard Passthrough: When my mouse cursor is positioned over the background fullscreen window, any key presses should be sent directly to that application. For instance, if the cursor is over the game and I press the "V" key, the game should receive the input.

Focus on Click: If I click on the fullscreen background window, the floating window should disappear or be hidden.

Focus Cycling: It should be possible to cycle focus between the fullscreen and the floating windows using a keybinding.

I have found it challenging to reproduce this behavior in Hyprland. Any guidance, configuration snippets, or advice on how to accomplish this would be greatly appreciated.

Thank you in advance for your help.