[EXAMPLE USER INPUT 1]
TATTOO_STYLE: สักยันต์ประยุกต์สี
YANTRA_PATTERN: ยันต์พญานาค
SUBJECT_GENDER: ชาย
TARGET_BODY_PART: หลังช่วงบน
USE_UPLOADED_BODY_IMAGE: Yes
BODY_IMAGE_TYPE: ภาพหลัง
LAYOUT_DENSITY: กลาง
SCRIPT_STYLE: อักขระขอมไทย
MAIN_SYMBOLS: พญานาค วงยันต์กลาง อุณาโลม
SECONDARY_SYMBOLS: แถวอักขระ ควันลายไทย และดอกบัว
TATTOO_POSITIONING: กึ่งกลาง
INK_CHARACTER: เส้นกลางแบบทำมือ
COLOR_MODE: สักสี
TATTOO_COLORS: เขียวมรกต แดงชาด ทองหม่น ดำ
THAI_WORDING: นะชาลีติ
WORD_PLACEMENT: ใต้ยันต์หลัก
FRESHNESS_LOOK: สมานแล้ว
SKIN_TONE: Auto from uploaded image
BACKGROUND_STYLE: ใช้พื้นหลังจากภาพอัปโหลด
PHOTO_STYLE: สมจริงแบบภาพถ่าย

[PROMPT]
Create a realistic traditional Thai Sak Yant tattoo design presentation based on the user input.

CORE GOAL
- The final result must focus on the tattoo layout, sacred geometry, and believable body placement.
- The tattoo must feel authentic, balanced, intentional, and visually consistent with Thai Sak Yant aesthetics.
- The output should work as a realistic tattoo concept placed on the specified body area.

IMAGE INPUT LOGIC
- If USE_UPLOADED_BODY_IMAGE is Yes, use the uploaded body image as the base.
- Support uploaded images of back, arm, leg, or other visible body areas.
- Preserve the original anatomy, pose, skin texture, lighting direction, and body proportions from the uploaded image.
- Apply the tattoo only onto TARGET_BODY_PART and align it naturally to the body surface.
- Do not redesign the body shape.
- Do not replace the person.
- Do not change the camera angle unless needed for realistic tattoo placement.

BODY AREA LOGIC
- TARGET_BODY_PART determines the tattoo layout.
- If the target is a full back or upper back, use vertical sacred composition with centered hierarchy.
- If the target is an arm or leg, adapt the design into a long vertical or wrapped flow suitable for cylindrical anatomy.
- The tattoo must follow muscle flow, bone landmarks, and skin curvature naturally.
- Avoid forcing a back-piece layout onto an arm or leg.

DESIGN LOGIC
- Use YANTRA_PATTERN as the main sacred design direction.
- Use MAIN_SYMBOLS as the dominant structure.
- Use SECONDARY_SYMBOLS only as supporting elements.
- If SCRIPT_STYLE includes sacred script, place it with clear hierarchy and balanced spacing.
- If SCRIPT_STYLE is ไม่มีตัวอักษร, use only geometric and symbolic sak yant forms.
- The composition must remain readable, balanced, and culturally coherent.

GENDER LOGIC
- SUBJECT_GENDER may influence anatomical styling only when relevant.
- Do not exaggerate anatomy.
- Do not sexualize the body.
- Keep the presentation focused on the tattoo and placement.

VISUAL STYLE
- realistic Sak Yant tattoo concept
- traditional Thai sacred tattoo feeling
- fine black ink linework
- geometric spiritual structure
- hand-applied sacred tattoo character
- authentic ritual aesthetic
- clear body placement reference

INK AND LINE QUALITY
- Follow INK_CHARACTER exactly.
- Keep linework fine to medium, natural, and slightly human in variation.
- No heavy graphic fill unless specifically requested.
- No modern sticker-tattoo look.
- No glossy decal effect.
- Tattoo must look embedded in skin, not pasted on top.

SKIN AND FRESHNESS
- Follow FRESHNESS_LOOK exactly.
- If สดใหม่, allow subtle redness or slight irritation around linework.
- If สมานแล้ว, keep the tattoo settled naturally into the skin.
- If เก่าเล็กน้อย, allow softer edges and slightly aged ink behavior.
- Use SKIN_TONE from the uploaded image when available, otherwise infer naturally.

COMPOSITION
- focus on TARGET_BODY_PART
- clear view of the tattoo layout
- centered or user-directed placement using TATTOO_POSITIONING
- realistic body framing
- no unnecessary props
- no distracting camera effects

PHOTOGRAPHY
- Follow PHOTO_STYLE
- keep lighting realistic
- tattoo details sharp and readable
- skin texture visible
- background secondary to the tattoo

CULTURAL ACCURACY
- Keep the design visually respectful to Thai Sak Yant tradition.
- Use sacred-style geometry, symbolic arrangement, and script rhythm consistent with the chosen direction.
- Avoid random fantasy symbols unrelated to the requested sak yant style.
- Avoid mixing unrelated tattoo styles unless explicitly requested.

RESTRICTIONS
- no logo
- no watermark
- no fake sticker effect
- no glossy vinyl tattoo look
- no neon colors
- no unrelated Western tattoo motifs unless requested
- no anatomy distortion
- no random extra symbols
- no background clutter