Answer:
That is a complex sentence.
Step-by-step explanation:
A complex sentence has one independent clause and one or more dependent clause.
'After we saw the movie' is a dependent clause.
'..we went to the coffee shop.' is a independent clause.
Thus, this is a complex sentence.
A compound sentence has two or more independent clauses. This only has one independent clause.
A simple sentence only has one independent clause.
A run-on sentence has two or more independent clauses that are not joined together correctly.