# Responsive Design Patterns Mobile-first patterns for creating adaptive, responsive user interfaces. ## Breakpoint System ```typescript export const breakpoints = { sm: '640px', // Small devices md: '768px', // Medium devices lg: '1024px', // Large devices xl: '1280px', // Extra large devices '2xl': '1536px' // 2X Extra large }; // Tailwind config module.exports = { theme: { screens: breakpoints } }; ``` ## Mobile-First Approach ```tsx // Start with mobile, enhance for larger screens

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``` ## Fluid Typography ```css /* Clamp for fluid scaling */ h1 { font-size: clamp(1.5rem, 5vw, 3rem); } /* Container queries */ @container (min-width: 400px) { .card-title { font-size: 1.25rem; } } ``` ## Responsive Images ```tsx

``` ## Touch-Friendly Patterns ```tsx // Minimum touch target: 44x44px // Swipe gestures function useSwipe(onSwipeLeft?: () => void, onSwipeRight?: () => void) { const [touchStart, setTouchStart] = useState(0); const [touchEnd, setTouchEnd] = useState(0); const minSwipeDistance = 50; const onTouchStart = (e: TouchEvent) => { setTouchEnd(0); setTouchStart(e.targetTouches[0].clientX); }; const onTouchMove = (e: TouchEvent) => { setTouchEnd(e.targetTouches[0].clientX); }; const onTouchEnd = () => { if (!touchStart || !touchEnd) return; const distance = touchStart - touchEnd; const isLeftSwipe = distance > minSwipeDistance; const isRightSwipe = distance < -minSwipeDistance; if (isLeftSwipe && onSwipeLeft) onSwipeLeft(); if (isRightSwipe && onSwipeRight) onSwipeRight(); }; return { onTouchStart, onTouchMove, onTouchEnd }; } ``` ## Integration Points Complements: - **frontend-design-systems**: For component design - **accessibility-patterns**: For mobile accessibility - **webapp-testing**: For responsive testing ---