The category, briefly
Fast-casual means you order at a line, watch the bowl get built, and sit down without table service.
Counter rule
Format decides the meal as much as the cuisine does.
Fast-casual dining pairs counter service with a stronger freshness signal than classic fast food. You move down a line, point at rice, beans, protein and toppings, and the food is assembled in front of you. Then you sit in a casual dining room with a tray or a basket. That model owns the burrito, bowl and salad segment because it works for a work lunch and for a family where everyone wants something different.
Two chains can serve similar food and feel completely different. How the counter moves, how much you can change, and whether there is a salsa bar at the end all shape the visit. Costa Vida, often shortened to costavida by regulars searching for hours and menus, sits toward the Baja-inspired, coastal end of this group, while several large competitors lean Tex-Mex. That split shows up in seasoning, sauce choices and the general feel of the menu.
Use this page the way you would use a tasting note: start with the format you want, then narrow by flavor direction. After that, practical questions — what is near you, what is open, what travel party you are feeding — decide more dinners than any menu philosophy.