SIGNATURE_NAME: ปัณณวิชญ์
SIGNATURE_STYLE: Avant-Garde Designer Signature, sleek, stylized, and slightly abstract
PEN_TOOL: Fine fountain pen
INK_COLOR: Graphite Smoke
BACKGROUND_COLOR: White paper


[PROMPT]
Create one single ultra-realistic handwritten signature mark derived from SIGNATURE_NAME.

CORE GOAL
- The output must be a true handwritten signature, not normal writing and not readable typography.
- It must feel like a naturally signed personal autograph created in one fluid motion by hand.
- The result must look premium, confident, refined, and fashion-brand level elegant.
- The final image must contain only ONE signature.

SIGNATURE BEHAVIOR LOGIC (CRITICAL)
- Treat SIGNATURE_NAME as the identity source of the signature, not as normal display text.
- The signature must be based on the real letter structure of SIGNATURE_NAME, but transformed into a fast, fluid, stylized autograph.
- Letters may merge, connect, overlap, simplify, elongate, loop, taper, compress, or become partially abstract as real signatures do.
- The result must not look like neatly written text, printed lettering, school handwriting, or a font sample.
- Readability is secondary to natural signature flow.
- It should feel like a luxury personal signature that hints at the name rather than spelling it out like a regular word.
- Preserve enough identity that it still feels derived from SIGNATURE_NAME, but do not render it as plain literal text.

HAND MOTION & STROKE LOGIC
- The signature must appear written in one continuous confident hand movement, with realistic rhythm and momentum.
- Simulate authentic human pen pressure variation:
  - lighter entry strokes
  - stronger downstrokes
  - tapered exits
  - natural acceleration and deceleration
- Include believable gesture flow, signature energy, and elegant line economy.
- Avoid slow, carefully drawn letter construction.
- Avoid the appearance of traced text.

TOOL & INK LOGIC
- Simulate the physical behavior of PEN_TOOL with high realism.
- Use INK_COLOR ink only.
- Show subtle real ink characteristics where appropriate:
  - slight ink pooling at stroke endings
  - tiny pressure darkening on curves or turns
  - delicate inconsistency from real hand movement
  - crisp but organic edges
- Keep the line beautiful, premium, and controlled.
- No messy blotches, no excessive bleeding, no cheap marker look.

STYLE TRANSLATION
- SIGNATURE_STYLE must influence the signature’s personality:
  - minimalist
  - elegant
  - luxury
  - fashion-house sophistication
  - confident and understated
- The signature should feel suitable for a premium designer label, luxury packaging, or personal brand endorsement.
- It must not feel casual, playful, childish, or bureaucratic.

COMPOSITION & PRESENTATION
- Place the signature centered on a clean BACKGROUND_COLOR background.
- Use generous negative space.
- Very faint premium paper texture is allowed only if subtle and realistic.
- No extra decorative graphics.
- No borders.
- No icons.
- No mockup context.
- No pen in frame.
- No hand in frame.
- No additional text.

REALISM RULES
- The signature must look like a scanned or photographed real ink signature on white paper.
- It must not resemble a digital font, vector path, SVG stroke, logo text, or synthetic calligraphy preset.
- Keep the form organic, natural, slightly imperfect in the way real premium signatures are.

LANGUAGE RULE
- The signature must be derived from SIGNATURE_NAME only.
- Do not replace the name with another word.
- Do not invent unrelated symbols or initials unless they naturally emerge from the signature flow.
- Do not typeset the name clearly as standard readable text.

[NEGATIVE PROMPT]
typed text, readable plain handwriting, standard font, calligraphy font, mechanical typography, vector curves, SVG path look, traced letters, school handwriting, neat lettering practice, blocky characters, multiple signatures, fake logo text, watermark, UI elements, extra words, spelling variation, printed text sample, text generator look, overly legible word rendering, stiff strokes, decorative flourishes unrelated to the name, cartoon ink, brush lettering poster style, 3D render, drop shadow