Should I use kuna or euros in Croatia?

I'm planning a trip to Croatia soon and I'm wondering about the local currency situation. Should I use kuna or euros? Are kuna widely accepted in shops, restaurants, and hotels? Are there any benefits to using one currency over the other? Will I be able to easily exchange euros to kuna if I need to? And is there a fee for using credit cards in kuna or euros? It would be great to have some clarity on this before I set off on my journey.