Two married couples, the Smiths ($S_H,S_W$) and the Joneses ($J_H,J_W$), are going on a double date in a small car with two rows, each having two seats. To ensure a harmonious trip, no spouse may sit directly next to their partner in the same row, and no spouse may sit directly in front of or behind their partner. How many distinct seating arrangements are possible for the four people?