CSS 3D Flip Card Demo

Files
- index.html: accessible card markup and demo instructions
- styles.css: responsive card layout and 3D flip animation
- script.js: click/tap state for keyboard and touch users

Run
Open index.html in a modern browser. No install, server, or external dependency is required.

Use a pointer to hover the card, or focus and activate it with Enter or Space. On touch screens, tap the card. The card respects the reduced-motion system preference.
