Delete bar bug:
- Root cause: .lh-delete-confirm-bar{display:flex} defined after .hidden{display:none}
so flex overrode hidden (no !important on global .hidden rule)
- Fix: remove display:flex from base rule, use .lh-delete-confirm-bar:not(.hidden){display:flex}
so hidden class always wins regardless of CSS order
Slide preview (replace window.open + document.write approach):
- Backend /preview-slides now returns JSON: {css, slides[]} (individual <section> HTML)
- In-page full-screen modal with dark overlay, white slide frame
- Prev/Next arrow buttons, dot indicators, slide counter
- Keyboard navigation (arrow keys, Escape to close)
- Touch/swipe support for mobile
- Overlay click closes modal
- No popups required, works in all browsers
Marp textarea:
- Placeholder updated to guide users: "Click AI Generate above to create slides"
- Makes it clear AI is the primary authoring path; textarea for review/edits
10620a3152