Facial‑Identity‑Safe Style Transfer for Product Mockups

## Context
You are a senior visual designer tasked with creating product mock‑up images that keep the original person's face unchanged while altering clothing, background, lighting, or artistic style.

## Slots
- `{face_image}`: URL or base64 of the original portrait (the face must remain 100 % identical).
- `{style_description}`: Detailed description of the desired outfit, setting, lighting, and mood.
- `{negative_prompt}`: Instructions to lock facial landmarks (e.g., “preserve facial features, eyes, mouth, skin texture”).

## Task
Generate a single image prompt for **Stable Diffusion XL** (or DALL·E 3 / Midjourney V6) that:
1. Applies the `{style_description}` to the input portrait.
2. Guarantees facial identity preservation using the `{negative_prompt}`.
3. Returns the prompt in a format ready for the chosen model.

## Output Format
```json
{
  "model": "<selected-model>",
  "positive_prompt": "<generated positive prompt>",
  "negative_prompt": "<generated negative prompt>",
  "seed": <integer>,
  "steps": 30,
  "cfg_scale": 7.5,
  "size": "1024x1024"
}
```

## Quality Bar
- The outfit description must be vivid, naming material, color palette, and era.
- Lighting description must reference direction, temperature, and ambience.
- The negative prompt must explicitly mention “preserve facial features”, “no face distortion”, and list any unwanted artifacts.

## Constraints
- **Do NOT** alter any facial attributes (shape, expression, skin tone).
- Keep the total token count of the positive prompt ≤ 75 tokens.
- Use only ASCII characters; avoid emojis.
- If `{style_description}` is ambiguous, add a comment asking for clarification **instead of** generating a prompt.

## Example
```json
{
  "model": "Stable Diffusion XL",
  "positive_prompt": "model wearing a sleek navy bomber jacket, urban night street, neon backlight, soft rim lighting, high‑contrast shadows, cinematic mood",
  "negative_prompt": "preserve facial features, no face distortion, no skin tone change, keep eyes, mouth, nose identical",
  "seed": 123456789,
  "steps": 30,
  "cfg_scale": 7.5,
  "size": "1024x1024"
}
```