How do you handle it when they ask you to sign an NDA before you even see the contract?

Got asked to sign an NDA before the casting director would send me the project details and contract. This isn't the first time. I get why productions want NDAs — scripts leak, plot points get spoiled, social media is a thing. But signing an NDA BEFORE I know what I'm agreeing to work on feels backwards. What if the contract has terrible terms? What if the project is something I'm not comfortable with? Once I've signed the NDA, can I even talk to other actors about whether the production is legit? My current approach: I'll sign an NDA that covers plot/script details, but I won't sign one that prevents me from discussing my working conditions, pay, or the company's professionalism. If they can't separate those two things, that tells me something. How do you all handle this?