The Zero-JS Glass UI: Pushing CSS to the Absolute Limit
JavaScript is expensive. CSS is cheap. Here is how we stripped 40kb of JS from our rendering pipeline without losing a single micro-interaction.
The JavaScript Tax
JavaScript is expensive. CSS is cheap. In my experience, most developers reach for a library the second they need a hover state or a simple modal. This is a massive mistake. Every kilobyte of JS you ship is a tax on your user's CPU and your LCP score.
Advanced Selectors: The New Meta
With the widespread support of :has(), :is(), and CSS variables, we can now build complex, interactive neon UIs without a single line of client-side JavaScript. We used these exact patterns to strip 40kb of JS from our rendering pipeline while actually *improving* the responsiveness of the micro-interactions.
Conclusion
Efficiency is the highest form of engineering. Challenge yourself to build your next glass interface without a script tag. Your Lighthouse score will thank you.
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