Ultra - detailed photorealistic, 8K, medium shot, a group of three friends celebrating at a rooftop infinity pool bar. They are clinking glasses, laughing genuinely. One woman in a elegant backless sundress, one man in a short-sleeved print shirt. The bartender is pouring a vibrant cocktail. Shallow depth of field isolates the group. Lighting is a mix of the warm glow from the bar interior and the cool cyan of the pool water, reflecting on their skin and glasses. Strong rim light from the city lights behind them. Night scene, social atmosphere, shot on a DSLR.