A gender-neutral young adult standing casually on a dark beach at night, photographed in a realistic

A gender-neutral young adult standing casually on a dark beach at night, photographed in a realistic candid iPhone flash style. The ocean is behind them with gentle waves, a dark cloudy night sky, and a small glowing full moon near the horizon. The subject is centered in the frame, facing the camera with a calm, slightly serious and natural expression. Wet, slightly messy dark hair naturally falling around the forehead, with a few loose strands.
Wearing a loose, oversized, lightweight white linen button-up shirt, slightly wrinkled and naturally hanging from the body, with the top buttons casually undone. Loose dark olive-gray wide-leg trousers. Both hands naturally placed inside the front pockets of the trousers. Relaxed posture, shoulders slightly loose, natural stance, no exaggerated fashion pose.
Direct on-camera flash illuminating the subject while the background remains dark and atmospheric, realistic skin texture, subtle imperfections, natural shadows, authentic low-light photography, slight film grain, soft ocean reflections, moody nighttime atmosphere, unposed vacation snapshot, realistic proportions, gender-neutral styling, no feminine or masculine exaggeration, no accessories, no bag, no jewelry, no glasses.
If using a reference image: preserve the exact facial features, face shape, proportions, skin tone, hairstyle, and recognizable identity of the reference image. Do not beautify, reshape, feminize, masculinize, or alter the face.
Photorealistic, natural iPhone photography, 4:5 vertical composition, medium full-body framing, authentic flash photography, not cinematic CGI, not overly polished, not AI-looking.