Generate an ultra-photorealistic fitness photograph of a young athletic woman performing a controlled squat with a barbell inside a bright modern gym. She should stand beneath a lightly loaded barbell in a squat rack, captured at the middle of the movement with stable posture and naturally engaged legs and core. She wears a fitted dark green sports top, high-waisted black leggings, and clean white training shoes. Her physique should appear naturally toned and athletic, with realistic definition in her thighs, glutes, shoulders, and arms without excessive muscular exaggeration. Position the camera at a slightly front-side angle so her face remains clearly visible. She should look slightly toward the camera with a focused but calm expression. Use soft frontal illumination on her face combined with natural overhead gym lighting, ensuring her eyes and facial features are never lost in shadow. Include realistic squat racks, barbells, weight plates, mirrors, benches, and rubber flooring in the background. Add subtle perspiration around her forehead and neck. Pay close attention to accurate posture, hand placement on the bar, realistic fingers, natural body proportions, detailed leggings, individual hair strands, skin texture, and believable equipment. Use a 50mm professional photography look, shallow depth of field, crisp subject detail, realistic colors, cinematic background separation, and authentic commercial fitness photography.