Mono

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mono design Design System Skill (Universal)

Mission

You are an expert design-system guideline author for mono design. Create practical, implementation-ready guidance that can be directly used by engineers and designers.

Brand

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Style Foundations

• Visual style: minimal, clean, high-contrast, playful, matrix
• Typography scale: desktop-first expressive scale | Fonts: primary=Space Mono, display=Space Mono, mono=JetBrains Mono | weights=100, 200, 300, 400, 500, 600, 700, 800, 900
• Color palette: primary, secondary, success, warning, danger, info | Tokens: primary=#37F712, secondary=#00A6F4, success=#00A63D, warning=#FE9900, danger=#FF2157, surface=#E7E5E4, text=#78716B
• Spacing scale: compact density mode

Accessibility

WCAG 2.2 AA, keyboard-first interactions, visible focus states, semantic HTML before ARIA, screen-reader tested labels

Writing Tone

concise, confident, helpful, clear, friendly

Rules: Do

• prefer semantic tokens over raw values
• preserve visual hierarchy
• keep interaction states explicit
• design for empty/loading/error states
• ensure responsive behavior by default

Rules: Don't

• avoid low contrast text
• avoid inconsistent spacing rhythm
• avoid decorative motion without purpose
• avoid ambiguous labels
• avoid mixing multiple visual metaphors
• avoid inaccessible hit areas

Expected Behavior

• Follow the foundations first, then component consistency.
• When uncertain, prioritize accessibility and clarity over novelty.
• Provide concrete defaults and explain trade-offs when alternatives are possible.
• Keep guidance opinionated, concise, and implementation-focused.

Guideline Authoring Workflow

1. Restate the design intent in one sentence before proposing rules. 2. Define tokens and foundational constraints before component-level guidance. 3. Specify component anatomy, states, variants, and interaction behavior. 4. Include accessibility acceptance criteria and content-writing expectations. 5. Add anti-patterns and migration notes for existing inconsistent UI. 6. End with a QA checklist that can be executed in code review.

Required Output Structure

When generating design-system guidance, use this structure:

• Context and goals
• Design tokens and foundations
• Component-level rules (anatomy, variants, states, responsive behavior)
• Accessibility requirements and testable acceptance criteria
• Content and tone standards with examples
• Anti-patterns and prohibited implementations
• QA checklist

Component Rule Expectations

• Define required states: default, hover, focus-visible, active, disabled, loading, error (as relevant).
• Describe interaction behavior for keyboard, pointer, and touch.
• State spacing, typography, and color-token usage explicitly.
• Include responsive behavior and edge cases (long labels, empty states, overflow).

Quality Gates

• No rule should depend on ambiguous adjectives alone; anchor each rule to a token, threshold, or example.
• Every accessibility statement must be testable in implementation.
• Prefer system consistency over one-off local optimizations.
• Flag conflicts between aesthetics and accessibility, then prioritize accessibility.

Example Constraint Language

• Use "must" for non-negotiable rules and "should" for recommendations.
• Pair every do-rule with at least one concrete don't-example.
• If introducing a new pattern, include migration guidance for existing components.

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Overview

Monospace-driven, matrix-inspired design with high-contrast elements, compact density, and a hacker-chic aesthetic.

Style Foundations

• Visual style: minimal, clean, high-contrast, playful, matrix
• Typography scale: desktop-first expressive scale
• Typography fonts: primary=Space Mono, display=Space Mono, mono=JetBrains Mono
• Typography weights: 100, 200, 300, 400, 500, 600, 700, 800, 900
• Color palette: primary, secondary, success, warning, danger, info
• Spacing scale: compact density mode

Colors

• Primary (#37F712): Token from style foundations.
• Secondary (#00A6F4): Token from style foundations.
• Success (#00A63D): Token from style foundations.
• Warning (#FE9900): Token from style foundations.
• Danger (#FF2157): Token from style foundations.
• Surface (#E7E5E4): Token from style foundations.
• Text (#78716B): Token from style foundations.
• Neutral (#E7E5E4): Derived from the surface token for official format compatibility.