stitch-design-taste – skill Thiết kế & UI cho agent AI

Stitch Design Taste — Semantic Design System Skill

When to Use

• Use when the user wants a Google Stitch-compatible DESIGN.md or semantic design system for AI screen generation.
• Use when translating premium frontend taste rules into Stitch-friendly visual descriptions, color roles, typography specs, and component behavior.
• Use when the design system must prevent generic AI UI patterns before screens are generated.

Limitations

• This skill produces semantic design-system guidance for Stitch; it does not guarantee Stitch will render every constraint exactly.
• Generated DESIGN.md files still require review against the actual product brief, brand constraints, accessibility needs, and screen content.
• Motion sections document implementation intent for later coding agents because Stitch itself may generate static screens.

Overview

This skill generates DESIGN.md files optimized for Google Stitch screen generation. It translates the battle-tested anti-slop frontend engineering directives into Stitch's native semantic design language — descriptive, natural-language rules paired with precise values that Stitch's AI agent can interpret to produce premium, non-generic interfaces.

The generated DESIGN.md serves as the single source of truth for prompting Stitch to generate new screens that align with a curated, high-agency design language. Stitch interprets design through "Visual Descriptions" supported by specific color values, typography specs, and component behaviors.

Prerequisites

• Access to Google Stitch via [labs.google.com/stitch](https://labs.google.com/stitch)
• Optionally: Stitch MCP Server for programmatic integration with Cursor, Antigravity, or Gemini CLI

The Goal

Generate a DESIGN.md file that encodes:

1. Visual atmosphere — the mood, density, and design philosophy

2. Color calibration — neutrals, accents, and banned patterns with hex codes

3. Typographic architecture — font stacks, scale hierarchy, and anti-patterns

4. Component behaviors — buttons, cards, inputs with interaction states

5. Layout principles — grid systems, spacing philosophy, responsive strategy

6. Motion philosophy — animation engine specs, spring physics, perpetual micro-interactions

7. Anti-patterns — explicit list of banned AI design clichés

Analysis & Synthesis Instructions

1. Define the Atmosphere

Evaluate the target project's intent. Use evocative adjectives from the taste spectrum:

• Density: "Art Gallery Airy" (1–3) → "Daily App Balanced" (4–7) → "Cockpit Dense" (8–10)
• Variance: "Predictable Symmetric" (1–3) → "Offset Asymmetric" (4–7) → "Artsy Chaotic" (8–10)
• Motion: "Static Restrained" (1–3) → "Fluid CSS" (4–7) → "Cinematic Choreography" (8–10)

Default baseline: Variance 8, Motion 6, Density 4. Adapt dynamically based on user's vibe description.

2. Map the Color Palette

For each color provide: Descriptive Name + Hex Code + Functional Role.

Mandatory constraints:

• Maximum 1 accent color. Saturation below 80%
• The "AI Purple/Blue Neon" aesthetic is strictly BANNED — no purple button glows, no neon gradients
• Use absolute neutral bases (Zinc/Slate) with high-contrast singular accents
• Stick to one palette for the entire output — no warm/cool gray fluctuation
• Never use pure black (#000000) — use Off-Black, Zinc-950, or Charcoal

3. Establish Typography Rules

• Display/Headlines: Track-tight, controlled scale. Not screaming. Hierarchy through weight and color, not just massive size
• Body: Relaxed leading, max 65 characters per line
• Font Selection: Inter is BANNED for premium/creative contexts. Force unique character: Geist, Outfit, Cabinet Grotesk, or Satoshi
• Serif Ban: Generic serif fonts (Times New Roman, Georgia, Garamond, Palatino) are BANNED. If serif is needed for editorial/creative contexts, use only distinctive modern serifs: Fraunces, Gambarino, Editorial New, or Instrument Serif. Serif is always BANNED in dashboards or software UIs
• Dashboard Constraint: Use Sans-Serif pairings exclusively (Geist + Geist Mono or Satoshi + JetBrains Mono)
• High-Density Override: When density exceeds 7, all numbers must use Monospace

4. Define the Hero Section

The Hero is the first impression and must be creative, striking, and never generic:

• Inline Image Typography: Embed small, contextual photos or visuals directly between words or letters in the headline. Images sit inline at type-height, rounded, acting as visual punctuation. This is the signature creative technique
• No Overlapping: Text must never overlap images or other text. Every element occupies its own clean spatial zone
• No Filler Text: "Scroll to explore", "Swipe down", scroll arrow icons, bouncing chevrons are BANNED. The content should pull users in naturally
• Asymmetric Structure: Centered Hero layouts BANNED when variance exceeds 4
• CTA Restraint: Maximum one primary CTA. No secondary "Learn more" links

5. Describe Component Stylings

For each component type, describe shape, color, shadow depth, and interaction behavior:

• Buttons: Tactile push feedback on active state. No neon outer glows. No custom mouse cursors
• Cards: Use ONLY when elevation communicates hierarchy. Tint shadows to background hue. For high-density layouts, replace cards with border-top dividers or negative space
• Inputs/Forms: Label above input, helper text optional, error text below. Standard gap spacing
• Loading States: Skeletal loaders matching layout dimensions — no generic circular spinners
• Empty States: Composed compositions indicating how to populate data
• Error States: Clear, inline error reporting

6. Define Layout Principles

• No overlapping elements — every element occupies its own clear spatial zone. No absolute-positioned content stacking
• Centered Hero sections are BANNED when variance exceeds 4 — force Split Screen, Left-Aligned, or Asymmetric Whitespace
• The generic "3 equal cards horizontally" feature row is BANNED — use 2-column Zig-Zag, asymmetric grid, or horizontal scroll
• CSS Grid over Flexbox math — never use calc() percentage hacks
• Contain layouts using max-width constraints (e.g., 1400px centered)
• Full-height sections must use min-h-[100dvh] — never h-screen (iOS Safari catastrophic jump)

7. Define Responsive Rules

Every design must work across all viewports:

• Mobile-First Collapse (< 768px): All multi-column layouts collapse to single column. No exceptions
• No accidental horizontal overflow: preserve accessible deliberate scrolling for wide tables or content that requires it
• Typography Scaling: Headlines scale via clamp(). Body text normally 1rem (16px at the usual root size); preserve zoom and user font settings
• Touch Targets: All interactive elements minimum 44px tap target
• Image Behavior: Inline typography images (photos between words) stack below headline on mobile
• Navigation: Desktop horizontal nav collapses to clean mobile menu
• Spacing: Vertical section gaps reduce proportionally (clamp(3rem, 8vw, 6rem))

8. Encode Motion Philosophy

• Spring Physics default: stiffness: 100, damping: 20 — premium, weighty feel. No linear easing
• Perpetual Micro-Interactions: Use optional brief feedback; respect reduced-motion and pause/stop controls instead of requiring infinite loops (Pulse, Typewriter, Float, Shimmer)
• Staggered Orchestration: Keep content available immediately; optional short reveals must respect reduced motion and avoid cumulative delay
• Performance: Animate exclusively via transform and opacity. Never animate top, left, width, height. Grain/noise filters on fixed pseudo-elements only

9. List Anti-Patterns (AI Tells)

Encode these as explicit "NEVER DO" rules in the DESIGN.md:

• No emojis anywhere
• No Inter font
• No generic serif fonts (Times New Roman, Georgia, Garamond) — distinctive modern serifs only if needed
• No pure black (#000000)
• No neon/outer glow shadows
• No oversaturated accents
• No excessive gradient text on large headers
• No custom mouse cursors
• No overlapping elements — clean spatial separation always
• No 3-column equal card layouts
• No generic names ("John Doe", "Acme", "Nexus")
• Use actual measured values; label mock numbers as examples rather than inventing precise metrics
• No AI copywriting clichés ("Elevate", "Seamless", "Unleash", "Next-Gen")
• No filler UI text: "Scroll to explore", "Swipe down", scroll arrows, bouncing chevrons
• No broken Unsplash links — use picsum.photos or SVG avatars
• No centered Hero sections (for high-variance projects)

Output Format (DESIGN.md Structure)

# Design System: [Project Title]

## 1. Visual Theme & Atmosphere
(Evocative description of the mood, density, variance, and motion intensity.
Example: "A restrained, gallery-airy i

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