Responsive Design Agent

Role: Mobile-First Responsive Specialist
Scope: Responsive implementations across all viewports
Version: 2.2 - High-Density Refactor

Purpose

Ensure subdomain implementations follow mobile-first principles with WCAG 2.5.5 touch targets, fluid typography, and responsive grids using Genesis v2.1.0+ ontological mixins.

When to Use This Skill

Activate when:

• Implementing new responsive layouts
• Optimizing mobile UX/touch targets
• Ensuring WCAG 2.5.5 compliance
• Refactoring desktop-first to mobile-first
• Creating responsive grids/forms
• Testing viewport breakpoints

Core Requirements

WCAG 2.5.5 Touch Targets: All interactive elements ≥44x44px on mobile
Fluid Typography: Minimum 16px on mobile (prevents iOS zoom)
Mobile-First: Build for mobile, enhance for desktop
Accessibility: Reduced motion, high contrast, keyboard navigation

→ Complete requirements: /docs/specifications/responsive-design.md

Quick Patterns

Responsive Environment Variants

// Auto-responsive grid (1 → 2 → auto columns)
@include genesis-environment('distributed');

// Dashboard grid (2 → 6 → 12 columns)
@include genesis-environment('manifest');

// Mobile drawer, desktop horizontal nav
@include genesis-environment('navigation-primary');

// Vertical mobile forms, horizontal desktop
@include genesis-environment('interaction-form');

Responsive Atmosphere Variants

// Full viewport height (100vh → 100svh)
@include genesis-atmosphere('viewport-aware');

// Touch-friendly spacing on mobile
@include genesis-atmosphere('spacious-mobile');

// High density on desktop
@include genesis-atmosphere('dense-desktop');

Common Component Patterns

Hero Section:

.hero {
  @include genesis-environment('focused');
  @include genesis-atmosphere('viewport-aware');
}

Product Grid:

.grid {
  @include genesis-environment('distributed');
  @include genesis-atmosphere('dense-desktop');
}

Form:

.form {
  @include genesis-environment('interaction-form');
  .input { @include genesis-synapse('input-primary'); }  // 16px, 44px
}

→ Complete patterns: references/LAYOUT-PATTERNS.md

Mobile Breakpoints

@include from(sm) { }   // ≥480px  (large phones)
@include from(md) { }   // ≥768px  (tablets)
@include from(lg) { }   // ≥1024px (laptops)
@include from(xl) { }   // ≥1280px (desktops)

Validation

Before committing:

npm run test:scss    # SCSS compilation
npm run lint:scss    # Stylelint checks
npm test             # All checks

Touch target audit:

• Use DevTools mobile emulation
• Verify all buttons/links ≥44x44px
• Test with actual devices

Resources

Complete Responsive System:

• /docs/specifications/responsive-design.md - Complete responsive design guide
• references/LAYOUT-PATTERNS.md - Production-ready layout patterns
• references/RESPONSIVE-GUIDE.md - Comprehensive responsive guide

Core Systems:

• /docs/specifications/scss-ontology-system.md - All responsive variants
• /docs/specifications/accessibility.md - WCAG 2.5.5 touch targets
• /docs/specifications/architecture.md - System design

Related:

• .github/instructions/scss.instructions.md - SCSS best practices
• GENOME.md - v2.1.0 responsive enhancements

Related Skills: scss-refactor-agent, html-template-agent, futuristic-effects-agent

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Version History:

• v2.2 (2026-02-10): High-density refactor - 370→146 lines, enhanced spec references
• v2.1.1 (2026-02-10): Enhanced spec references
• v2.1.0: v2.1.0 responsive system integration