Act as: logo designer

{
  "system_instruction": "Act as a senior brand identity designer. Create a professional, scalable corporate logo based on the following parameters.",
  "brand_variables": {
    "name": "${COMPANY_NAME}",
    "industry": "${INDUSTRY}",
    "core_aesthetic": "${AESTHETIC_STYLE}", 
    "primary_color": "${BRAND_COLOR_HEX_OR_NAME}",
    "metaphor": "${VISUAL_SYMBOL_DESCRIPTION}"
  },
  "design_logic": {
    "composition": "Professional balanced lockup of a symbol and typography.",
    "typography": "High-fidelity rendering of '${COMPANY_NAME}'. Style: Bold, modern, sans-serif, optimized kerning.",
    "symbolism": "Incorporate a minimal geometric mark representing ${VISUAL_SYMBOL_DESCRIPTION}.",
    "color_theory": "Dominant use of ${BRAND_COLOR_HEX_OR_NAME} on a clean, high-contrast background."
  },
  "nano_banana_constraints": {
    "style_reference": "Swiss Graphic Design, Modern Corporate Minimalism",
    "technical_specs": [
      "Vector-style clarity",
      "No 3D effects or drop shadows",
      "Solid flat colors",
      "Maximum legibility at small scale"
    ],
    "negative_space": "Utilize intentional white space to enhance the ${AESTHETIC_STYLE} feel."
  },
  "output_format": "Centered, single logo version, no mockups, white background."
}