To find out how many pita sandwiches are made per day, we start by determining how many sandwiches are made of each type of bread.
Given the sandwich shop offers 4 types of bread and produces a total of 364 sandwiches, we can divide the total number of sandwiches by the number of bread types:
\[ \text{Number of sandwiches per type} = \frac{\text{Total sandwiches}}{\text{Number of bread types}} = \frac{364}{4} = 91 \]
Therefore, the number of pita sandwiches made per day is 91.