Photorealistic Gym Selfie Portrait (Classic B&W Sportswear)

{
  "subject": {
    "core_identity": "Use the same face from the reference image without changing facial features, fair skin with warm undertones, natural beauty, long straight dark brown hair with subtle highlights",
    "skin_and_facial_details": "hyper-detailed photorealistic skin:1.4, visible fine pores and natural texture especially on cheeks and nose, subtle subsurface scattering creating soft healthy glow, natural faint imperfections, highly detailed irises with realistic radial patterns and sharp catchlights from gym LED lights and phone flash, natural brows and lashes, lips with soft matte finish:1.3",
    "hair": "long straight dark brown hair with warm caramel undertones, smooth and sleek falling past shoulders, strands catching cool gym lighting with realistic shine and light separation:1.2",
    "body_figure": "athletic toned yet curvaceous silhouette with balanced proportions:1.3, natural bust accentuated by cropped top, defined narrow waist, rounded hips and glutes hugged by high-waisted leggings, long toned legs with muscle definition visible under tight fabric, natural asymmetry in standing pose with weight shift",
    "micro_expression": "direct confident relaxed gaze into the mirror, soft natural facial expression with a faint casual smile, relaxed eye shape and slightly parted lips, posture and facial features together convey self-assured athletic poise and casual gym confidence:1.2"
  },
  "apparel_and_materials": "beige off-white cropped sports bra or tank with thin straps, tight black high-waisted seamless leggings with compressive fit, smooth moisture-wicking fabric showing realistic stretch sheen and minor wrinkles at knees and hips, brown casual slippers or indoor shoes, gym duffel bag held in left hand:1.3",
  "pose_and_action": "casual full-body mirror selfie in gym setting, standing with slight hip shift and weight on right leg, right hand holding phone at face level for mirror shot, left hand holding gym bag strap, relaxed shoulders and natural stance, posture conveys everyday gym confidence, effortless athleticism and casual self-display:1.2",
  "scene_and_environment": "modern commercial gym interior, dark rubber flooring, large wall mirrors, background with weight machines cable stations and cardio equipment, bright cool-white LED overhead lighting, functional athletic space with metallic accents:1.1",
  "lighting_shadows_and_color_design": "bright even cool-white LED gym li