je n'avais pas idée que vous étiez

I had no idea you were

→ je
phrase Rare #44,731
I had no idea you were A past expression of surprise or lack of knowledge. The adjective or participle that follows étiez agrees with vous when vous refers to one person, and is usually masculine plural or feminine plural when vous refers to multiple people.
FR: Je n'avais pas idée que vous étiez déjà arrivé.
EN: I had no idea you had already arrived.

Je n'avais pas idée que vous étiez impliqués.

I had no idea you were involved.

Je n'avais pas idée que vous étiez si stupides.

I had no idea you were so stupid.

Je n'avais pas idée que vous étiez impliquée.

I had no idea you were involved.