Create an image featuring a bartender in a cozy, upscale bar setting. The bartender should have a friendly expression and be wearing a stylish black vest over a white shirt, with a tie. Behind the bar, instead of a wall of bottles, display a variety of colorful drinks on the counter, including a cocktail glass with a twist of citrus, a tall glass of a refreshing soda, and a short glass of a dark beverage. The background should have warm lighting and wooden shelves lined with glassware, without any visible logos or brand references.