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Project Overview
A dark mode implementation example demonstrating theme switching with localStorage persistence. The page features a smooth toggle animation between light and dark themes, with all colors transitioning seamlessly. The user's preference is saved to localStorage so it persists across browser sessions — a must-have feature for modern web applications.
Key Features
- Smooth light/dark theme toggle animation
- localStorage persistence for user preference
- CSS custom properties for theme colors
- System preference detection with prefers-color-scheme
- Transition animations between themes
- Toggle switch with sun/moon icon animation
Technical Highlights
CSS custom properties (variables) on the :root element enable instant theme switching by changing a single class. localStorage saves the theme preference for persistence. The prefers-color-scheme media query detects the user's OS-level theme preference as the default. CSS transitions on background-color and color properties create smooth theme changes.