- What CSS properties power the flip?
- `perspective` on the container, `transform: rotateY(180deg)` on hover, and `backface-visibility: hidden` on both faces so only one is visible at a time.
- Does it work on mobile touch?
- Hover isn't triggered on touch. The tool includes an `:focus-within` fallback so tabbing into the card flips it. JS is needed for tap-to-flip.
- Can I flip on click instead of hover?
- Yes — the tool has a radio-input-based variant where clicking toggles `:checked` and the sibling card flips. Pure CSS, no JS.
- What about 3D perspective?
- Tunable — 1000px perspective is a natural default. Lower values exaggerate the 3D effect; higher values flatten it.