Bulgaria to join euro area on 1 January 2026

Doubling of the prices overnight coming like in Croatia and many countries before it?

Yes there's an inflation shock at the beginning, then salaries and everything adjusts.

So, after introducing the euro, and everything overnight becomes ~2x more expensive, salaries will match that trajectory and eventually also become ~2x larger, almost universally no matter the job type? Did I get your argument right? I ask because I don't think this actually has been the case with pretty much any EU country.

From what I have seen, salaries will certainly adjust themselves, and they will grow, but the resulting purchasing power is going to remain lower than it has been prior to introducing the euro.