Hochdetaillierter JSON-Prompt für Indoor-Fitness-Spiegel-Selfie

```json
{
  "aspect_ratio": "9:16",
  "scene_type": "Indoor-Fitness-Spiegel-Selfie",
  "camera": {
    "device": "Smartphone-Rückkamera",
    "angle": "Augenhöhe, leicht zum Spiegel hin geneigt",
    "framing": "Oberschenkel bis Kopf, vertikale Komposition",
    "focus": "Scharfer Fokus auf das Motiv, klarer Hintergrund",
    "style": "Casual Spiegel-Selfie"
  },
  "subject": {
    "gender": "{argument name=\"gender\" default=\"male\"}",
    "age": "{argument name=\"age\" default=\"young adult\"}",
    "build": "{argument name=\"build\" default=\"lean, muscular, athletic\"}",
    "skin_tone": "{argument name=\"skin tone\" default=\"light to medium with warm undertones\"}",
    "hair": {
      "color": "{argument name=\"hair color\" default=\"dark brown\"}",
      "length": "{argument name=\"hair length\" default=\"medium\"}",
      "texture": "{argument name=\"hair texture\" default=\"slightly wavy\"}",
      "style": "{argument name=\"hair style\" default=\"loose, natural, slightly messy\"}"
    },
    "face": {
      "shape": "{argument name=\"face shape\" default=\"oval with defined jawline\"}",
      "eyes": {
        "direction": "{argument name=\"eye direction\" default=\"looking at phone screen\"}",
        "expression": "{argument name=\"eye expression\" default=\"focused, calm\"}"
      },
      "eyebrows": "{argument name=\"eyebrows\" default=\"natural, slightly furrowed\"}",
      "nose": "{argument name=\"nose\" default=\"straight, medium width\"}",
      "mouth": {
        "state": "{argument name=\"mouth state\" default=\"closed\"}",
        "expression": "{argument name=\"mouth expression\" default=\"neutral, relaxed\"}"
      },
      "overall_expression": "{argument name=\"overall expression\" default=\"serious, introspective\"}"
    },
    "body_posture": {
      "stance": "aufrecht stehend",
      "torso": "leicht zum Spiegel hin geneigt",
      "shoulders": "entspannt, aber gerade",
      "arms": {
        "right_arm": "am Ellbogen gebeugt, Smartphone auf Brusthöhe haltend",
        "left_arm": "entspannt nach unten, ein Kleidungsstück haltend"
      },
      "hands": {
        "right_hand": "hält das Telefon fest",
        "left_hand": "hält ein gefaltetes dunkles Kleidungsstück"
      }
    },
    "body_details": {
      "upper_body": "nackter Oberkörper mit sichtbarer Brust-, Schulter- und Armdefinition",
      "abdomen": "definierte Bauchmuskeln mit sichtbarer Mittellinie",
      "arms": "definierte Bizeps und Unterarme mit subtilen Adern"
    },
    "clothing": {
      "bottom": {
        "type": "{argument name=\"bottom type\" default=\"athletic joggers or shorts\"}",
        "color": "{argument name=\"bottom color\" default=\"olive green\"}",
        "fit": "{argument name=\"bottom fit\" default=\"relaxed fit at waist, slightly loose\"}"
      },
      "accessories": [
        "dunkle Smartwatch oder Fitnessband am Handgelenk"
      ]
    }
  },
  "objects": {
    "smartphone": {
      "color": "{argument name=\"smartphone color\" default=\"dark\"}",
      "case": "{argument name=\"smartphone case\" default=\"graphic or sticker-covered case\"}",
      "position": "in der rechten Hand vor dem Spiegel gehalten"
    },
    "garment": {
      "type": "{argument name=\"garment type\" default=\"shirt or towel\"}",
      "color": "{argument name=\"garment color\" default=\"dark\"}",
      "position": "in der linken Hand in Hüftnähe gehalten"
    }
  },
  "environment": {
    "location": "{argument name=\"location\" default=\"indoor gym or fitness facility\"}",
    "background": {
      "walls": "{argument name=\"walls\" default=\"one dark wall and one wall with colorful mural art\"}",
      "mural": "{argument name=\"mural description\" default=\"abstract illustration with warm orange, yellow, and red tones\"}",
      "floor": "{argument name=\"floor\" default=\"smooth gym flooring\"}"
    },
    "mirror": "großer Wandspiegel, der das Motiv reflektiert"
  },
  "lighting": {
    "type": "{argument name=\"lighting type\" default=\"indoor artificial lighting\"}",
    "direction": "{argument name=\"lighting direction\" default=\"overhead and frontal\"}",
    "quality": "{argument name=\"lighting quality\" default=\"even, soft highlights on skin\"}",
    "shadows": "{argument name=\"shadows\" default=\"minimal, soft shadows enhancing muscle definition\"}"
    },
  "style": {
    "genre": "{argument name=\"genre\" default=\"fitness lifestyle photography\"}",
    "aesthetic": "{argument name=\"aesthetic\" default=\"clean\"}"
  }
}
```