Combine multiple variables in one master variable

I love variables, they make lives easier. But would it be possible to combine multiple variables in one click. For instance, I design a lot of cards in UI, and they all have a grey outline (var 1) with a 5px border (var 2) and a 20 px padding (var 3), and I have to add them one by one. Could I just define those 3 variables in 1master variable so I only have to apply that master variable? Creating a card component isn’t the solution for me as many cards can have different internal layouts.