[ابو بيشو]

You have no idea, (…):
هنا عزيزى have فعل اساسى وليس فعل مساعد لذا يكون الفعل المساعد do
You have no idea, do you?
You haven't got any idea, have you?
نستخدم noلننفى الاسم ونستخدم not لننفى الفعل
I have no idea.=I don't have any idea.
The general principle is that when the main clause is positive, the question tag is negative. You have no idea is made negative by the presence of no. It follows that the tag will be: do you?
In general "do you" since the first part of the sentence is negative (contains "no").
هنا عزيزى have فعل اساسى وليس فعل مساعد لذا يكون الفعل المساعد do