A confident adult man with short dark hair under a white cap stands

Prompt

A confident adult man with short dark hair under a white cap stands in a wide stance against an indoor wooden door. He wears a white ribbed tank top covering his torso completely, black tight-fitting shorts ending mid-thigh revealing thick quadriceps and calves, grey knee-high socks worn barefoot. His left hand holds the waistband behind his back while his right hand holds a smartphone at chest level taking a mirror selfie with a neutral focused expression looking down. Soft natural indoor ambient light casts slight shadows against the door in this full-body vertical shot., a single uninterrupted photograph only, no written words or typography anywhere in frame, no captions, no app UI, no social-media post layout, no screenshot borders