Design a close-up of a juicy, perfectly grilled hamburger stacked with fresh toppings. The burger should feature a thick, succulent beef patty, melted cheddar cheese, crisp lettuce, ripe tomato slices, and a toasted brioche bun. Dripping with flavor, the burger should appear mouthwatering with subtle grill marks and a slight char on the edges. The focus of the image should be on a small, round white flag perched on top of the bun, sticking out from a wooden skewer. The flag should be clean and minimal, standing out against the rich colors of the burger. The background should be simple, so the burger and the flag remain the focal points, with warm, natural lighting highlighting the textures and details of the ingredients.photorealistic, centre align, focalpoint, super realistic, visual clarity, 8k