Candid UGC smartphone rooftop party snapshot of a young woman standing at night, rear three-quarter view, head bowed with the face in profile and eyes cast down, body arched in an elegant S-curve. One hand resting on her thigh with spread fingers, the other arm bent behind with the hand at the small of her back; exactly two arms and two hands, anatomically connected, clean fingers with long nails, no extra limbs. Black sequin backless halter mini dress with a fully open back and nape tie, gold dangling earrings, metallic star hair clips, thin bracelet, auburn updo with loose strands blowing across the face. Rooftop terrace at night with warm golden city bokeh lights, blue LED strip along the ledge, white sofa cushions at the bottom, hazy purple-blue night sky. Mixed neon wash of purple-magenta and blue on the skin, warm orange bokeh behind, rim light tracing the back and arm, natural low-light smartphone exposure. Vertical three-quarter framing from head to mid-thigh, casual spontaneous composition, visible grain, authentic rooftop party snapshot character.
