What type of restaurant would you classify EVOS as (quick-service, fast/quick-casual, casual, theme)? Why?

EVOS was started in Tampa, Florida, in 1994 by Alkis Crassas, Michael Jeffers, and Dino Lambridis, three friends from different backgrounds who enjoyed eating the classic all-American meal of burgers, fries, and shakes but were tired of feeling guilty after consuming food that was unhealthy and contained so many calories. After determining that a niche for healthy fast-food was nowhere to be found in the market, they decided to start a new restaurant concept based on that notion. The end result was EVOS, a fast-casual restaurant offering the typical fast-food items that people love to eat but re-creating them with better ingredients and healthier preparation techniques. Originally, the restaurant was more similar to an independent café, but over the years, EVOS has evolved into a welldeveloped concept franchised at multiple locations throughout the southeast. Currently, there are six EVOS locations—
including four in South Florida, one in Atlanta, Georgia, one in Chapel Hill, North Carolina—and several in development.