A realistic smartphone mirror selfie of a young Thai woman in her 20s sitting on a black workout bench inside a modern gym. She is positioned on the right side of the vertical frame, leaning back slightly, holding a smartphone in front of the center of her face while taking a mirror selfie. She wears a dark gray baseball cap with the brim facing forward, and long straight black hair falls naturally from underneath the cap. Her expression is calm, cool, and slightly distant, with her eyes looking toward the phone screen or her reflection. Her lips are naturally closed and partly hidden by the phone, with no obvious smile, as if this was captured casually right after a workout. She wears a black bandeau or one-shoulder strappy athletic top, close-fitting with slight wrinkles and matte elastic texture, leaving the shoulders, collarbones, and upper chest edges exposed. The bottom is a black high-waisted mini skirt or skort, fitted around the waist and hips, naturally folded and partially hidden by the seated pose near the upper thighs. She wears brown tall boots. One leg is bent and lifted across the foreground, while the other leg stretches diagonally toward the lower left of the frame, creating a strong diagonal composition and subtle wide-angle leg elongation. Her skin tone is fair warm ivory, softly bright under cool white gym lighting but still realistic. Visible skin includes part of the face, neck, both shoulders, collarbones, upper chest edges, upper arms, forearms, hands, a small section of the waist, large areas of both thighs, knees, and parts of the lower legs. The abdomen and hip edges are partly covered by clothing and the seated pose; the buttocks are not visible or are blocked by the bench and skirt. The skin should look smooth and delicate but not plastic, with natural softness on the thighs and knees. It should feel visually cool, fine, lightly elastic, and human, with subtle color variation around the joints. The setting is a modern gym with gray walls, dark gray floor tiles, a black gym bench, equipment bars, a workout bench on the left, and a large rounded-rectangle glass window in the background reflecting blue-white indoor lights. The main light comes from large overhead cool-white LED panels, with blue-white reflections from the glass window on the left. The light creates broad, direct highlights on the shoulders, arms, thighs, and floor, while shadows come naturally from ceiling light and equipment obstruction. Keep mirror scratches, glass streaks, slight glare, mild compression, and small overexposed highlights. The photography style should feel like a real smartphone small-sensor wide-angle mirror selfie, vertical composition around 2:3, low-to-mid mirror viewpoint, with the subject slightly right-weighted and the legs extending toward the lower left. Deep depth of field keeps both the subject and gym equipment relatively clear, with a little haze from mirror and glass reflections. Do not make it a polished commercial studio image. Keep the casual social media feeling, slight framing imperfection, background clutter, accidental reflections, and authentic indoor digital texture.