If a price floor benefits producers why does a price floor reduce social surplus?

A price floor, while benefiting producers by guaranteeing a minimum price for their goods, can lead to excess supply and market inefficiencies. When prices are artificially elevated, consumer demand may decrease, resulting in a surplus of goods that are not sold. This misallocation of resources reduces the overall social surplus, as the total welfare (the sum of consumer and producer surplus) is diminished due to lost transactions that would have occurred at equilibrium prices. Consequently, the gains to producers are outweighed by the losses to consumers and the inefficiencies introduced in the market.