{
"positive_prompt": {
"color_and_light_rules": {
"white_balance": "Warm tungsten (approx. 3200K), typical of high-end bathroom lighting.",
"contrast": "High-dynamic range with deep blacks in the shower shadows and brilliant specular highlights on the satin fabric.",
"exposure": "Exposed for skin tones, allowing the brightest points of the red satin to reach near-saturation.",
"saturation": "Deep crimson and ruby red tones in the clothing; natural, warm peach and honey undertones in the skin.",
"grading_rule": "True-to-life color reproduction; no artificial cinematic teal/orange grading."
},
"body_and_fabric_interaction": {
"chromatic_behavior": "Light-to-dark gradient across the satin fabric curves, following the body's topography.",
"subsurface_scattering": "Soft orange-red glow where light passes through the thinner edges of the skin (ears, fingers).",
"micro_gradients": "Subtle tonal shifts on the stomach and chest reflecting the ambient red light from the clothing back onto the skin."
},
"environment": {
"light_source": {
"type": "Multi-point warm indoor lighting.",
"direction": "Primary light from front-right (vanity lamp), secondary ambient light from the ceiling.",
"softness": "Soft-edged shadows with a distinct 'wrap-around' effect on the limbs.",
"falloff": "Inverse-square law applied; light intensity drops significantly toward the shower floor and back corners."
}
},
"materials_and_textures": {
"fabric_shimmer": "Anisotropic highlights on the satin, creating a gradient of 'metallic' sheen that follows the direction of the fabric grain.",
"tile_reflections": "Subtle, diffused reflections of the red clothing visible on the glossy wall tiles and glass partition."
}
},
"strict_negatives": [
"flat colors",
"grayish shadows",
"washed out reds",
"oversaturated skin",
"unnatural neon glow",
"uniform lighting",
"digital color banding",
"desaturated midtones"
]
}