Dynamic Theme Toggle

The Dynamic Theme Toggle project provides an intuitive theme management system for web applications, automatically detecting user system preferences and allowing manual overrides. Implemented with Next.js and CSS custom properties, it ensures zero-configuration setup while supporting complex themes beyond binary light/dark modes. Challenges included handling theme transitions without flash-of-unstyled-content (FOUC) and maintaining consistency across server and client renders. Technologies utilized: Next.js for SSR compatibility, localStorage for persistence, and Tailwind's dark mode plugin for styling. The solution uses matchMedia API for preference detection and a context provider for global state. Security considerations addressed potential localStorage injection risks through sanitization. Outcomes: Instant theme application on load, 100% hydration consistency, and user preference respect leading to higher satisfaction scores. This component is now integral to portfolio sites, demonstrating scalable theming solutions for enterprise apps.