"For you too, I hope you had a great day."
Let's break it down:
* Pra você também: This means "for you too."
* Espero que: This means "I hope that."
* tenha tido: This is the subjunctive form of the verb "ter" (to have) and means "have had."
* um ótimo dia: This means "a great day."
Therefore, the whole phrase expresses a polite and friendly hope that the person you're talking to had a pleasant day, just like you did.