mobile-design

name	mobile-design
description	Apply mobile-first design patterns and touch interactions. Implements navigation, responsive layouts, touch targets, gestures, and platform-aware patterns for iOS and Android.
argument-hint	[patterns | touch] — Optional: run just navigation/layout patterns or touch interactions. Default: both.

Mobile Design

Apply mobile-first patterns and touch interactions. Run both areas or target one specifically.

Usage

/mobile-design           — apply both patterns and touch interactions
/mobile-design patterns  — navigation, layout, responsive strategies only
/mobile-design touch     — touch targets, gestures, haptics only

Instructions

Parse the argument and run the specified area(s). If no argument, run both in order.

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Area: patterns

Apply mobile navigation, layout patterns, and responsive strategies.

Goals:

• Implement appropriate mobile navigation pattern for the app type
• Ensure content is reachable within thumb zones
• Apply responsive grid that works from 320px up

Navigation patterns (choose based on app type):

• Bottom nav bar — for apps with 3-5 top-level destinations (most apps)
• Hamburger/drawer — for content-heavy apps with many nav items
• Tab bar — iOS-native feel, persistent tabs
• Top nav with back — for linear flows (checkout, onboarding)

Layout rules:

• Single column on mobile — avoid multi-column below 640px
• Full-width cards with 16px horizontal padding
• Sticky headers max 56px height — leave content room
• Bottom safe area padding for iOS home indicator (env(safe-area-inset-bottom))

Responsive strategy:

• Mobile-first CSS: start with mobile styles, add complexity at breakpoints
• Breakpoints: 640px (sm), 768px (md), 1024px (lg), 1280px (xl)
• Images: use srcset and sizes for responsive images
• Text: larger base size on mobile (16px minimum — never smaller)

Thumb zones:

• Primary actions in bottom 60% of screen
• Destructive actions require confirmation and placed out of natural thumb path
• Navigation anchored to bottom (not top) on mobile

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Area: touch

Implement touch-friendly interactions for mobile interfaces.

Goals:

• All interactive targets meet minimum touch target size
• Swipe gestures feel natural and have visual feedback
• Platform-appropriate interaction patterns

Touch targets:

• Minimum 44×44pt (iOS) / 48×48dp (Android) for all tappable elements
• Add padding to small visual elements to meet size requirements without changing appearance
• Spacing between adjacent targets: minimum 8px gap

Gestures to implement where appropriate:

• Swipe to dismiss — modals, notifications, cards
• Pull to refresh — list/feed views
• Long press — contextual menus, drag handles
• Swipe actions — list items (delete, archive, etc.)

Feedback patterns:

• Visual press state (scale 0.97 + opacity 0.8) on tap — 150ms, ease-out
• Haptic feedback on key actions (iOS: UIImpactFeedbackGenerator, Android: VibrationEffect)
• Loading skeletons instead of spinners for content loads
• Smooth transitions (300ms) for navigation and modal presentation

iOS/Android specifics:

• iOS: respect safe areas, use native scroll momentum, blur effects for sheets
• Android: ripple effects on touch, elevation shadows, bottom sheet patterns
• Both: respect prefers-reduced-motion for all animations