Playing a "friendly" match between two teams of 16, imps, you have this hand.
You open 1♠
Here are three different auctions
1.
You open 1♠. Partner responds 2♦ in an Acol or SA context (not FG)
You rebid 2♥
Partner bids 3♣, FSF to game
What do you bid?
2.
You open 1♠. Partner responds 2♦, forcing to game
You rebid 2♥. Partner bids 3♦, showing a good diamond suit. 3♣ from partner would have been fourth suit forcing.
What do you bid?
3.
You open 1♠. Partner responds 2♦, forcing to game
You rebid 2♥, artificial, denying six spades and being either 12-14/18-19 balanced, or 5-4 with spades and hearts/clubs, or a minimum 5-5 without good suits.
Partner bids 3♦ showing very good diamonds and showing no interest in whether you have a side suit or not (partner's alternatives were 2♠ relay, 2NT showing three spades, 3♣ and 3♥ natural)
What do you bid?
Is your answer different on these different auctions?
(Yes, there were 8 tables, but I think every auction was one of the three above, with the majority being the first)

Help

1♠ P 2♦ P
2♥ P 3♣* P ?
*read text