Train Mirror Selfie Fashion Portrait

Create a tall vertical photorealistic fashion portrait of a {argument name="subject" default="young adult woman"} sitting on a purple speckled bench seat inside a commuter train, taking a mirror selfie with a smartphone. She is framed full-body from a slightly high front angle, seated near the left wall of the train with a window on the right and beige metal interior panels behind her. Her face is partially hidden by a black smartphone with a quilted case and multiple rear cameras, covering the lower half of her face while her large eyes look directly toward the mirror/camera. She has {argument name="hair color and style" default="long wavy black hair with soft bangs"}; one hand holds the phone and the other lightly touches a lock of hair beside her face. She wears a Japanese school-uniform-inspired outfit with exactly 6 main visible clothing/accessory items: a beige cardigan, a white collared shirt, a navy plaid bow tie, a navy plaid pleated skirt, black thigh-high socks, and black loafers. A large black rectangular school bag rests across her lap, with one small round pink charm hanging from a silver keychain. The train seat is deep purple with a mottled texture, the floor is beige, the window shows a softly blurred outdoor scene, and the lighting is natural daylight, candid, realistic, slightly soft, with authentic phone-selfie composition and no text or watermark.