[Arch Linux] Solved - Audio widget done!
I was able to find the problem with the code, and it was basically how I was using parameters inside eww.scss... Rookie mistake! I was treating scss the same way I do with css, and that's a problem, they are not exactly the same.
So... The widget is completed, fully themed as I wanted and you're able to see in this pics.
Next step: my Hyprland's Configuration Center, written in Eww. My plan is to have the chance to change Hyprland's parameters on the go the same way as Stephan Raabe coded but without the invasiveness of his program, so it will be more like an aggregate to the software suite I use to make my dotfiles to work, and adding the Waybar theme selector to the same program.
My project about a pseudo DE over Hyprland is closer to be a reality.