- Remove language button from header
- Add language select dropdown in sidebar settings
- Add translations for "Language" label in all languages
- Remove unused .lang-switch CSS
- Create lesson directories and copy English lessons as templates
- Add full UI translations for pl, es, ar, uk languages
- Update lessons.js with module stores for all new languages
- Implement language cycling (en → de → pl → es → ar → uk → en)
- Fix playground mode detection (lesson.mode takes precedence)
- Rename welcome lessons to Get Started, Overview, Playground
- Remove separate playground module files
- Fix playground detection to check lesson.mode instead of module.id
- Hide Run button (live preview is stable)
- Update all references from librete.ch to LibreTECH
- Add context to repo links (Gitea Source, GitHub Mirror)
- Fix welcome lesson redundant text
- Slow down CRISPY animation to 8s
- Remove editor-tools margin-right
- Add Welcome module with intro lessons (EN/DE)
- Success message now bounces like DVD screensaver (10s duration)
- Mobile: nav bar at top, preview before editor
- Logo: CODE with purple background pill
- Remove unnecessary async/await from loadModules (static imports)
- Move game controls to top of right panel
- Move preview header below controls, above preview
- Flip inset shadow to top of preview section
If no lesson loads within 3 seconds, show a centered, gray notice
with fade-in animation suggesting to select from menu or check help.
Includes link to help dialog.
- Remove data-i18n="loading" from lesson title and module name
- Start with empty content instead of "Loading..." placeholder
- Remove data-i18n attribute after restoring cache to prevent overwrites
Store lesson title, description, and task in localStorage after each
lesson load. On page reload, immediately restore the cached content
to avoid showing "Loading..." placeholder text.
- Add contact section to help dialog with librete.ch, GitHub, Gitea, LinkedIn links
- Add HTML/CSS prefixes to English module titles for consistency with German
- Add CSS transitions for smooth lesson switching
- Add transitioning class to prevent content flash during lesson changes
- Import both EN and DE lesson files in lessons.js
- loadModules() now accepts language parameter
- toggleLanguage() reloads lessons in new language
- initializeModules() uses current language from i18n
- Preserves user position when switching languages
Native dialog elements don't close on backdrop click by default.
Added click handlers that check if click target is the dialog itself
(not its children) to enable this expected UX behavior.
- Add skip-to-content link for keyboard users
- Convert module headers and lesson items from divs to buttons
- Add ARIA attributes (aria-expanded, aria-controls, aria-label)
- Add focus return to trigger element when closing sidebar
- Shift main content when sidebar is open using CSS :has()
- Add code element styling in instruction boxes
- Add module title pill above lesson title showing current category
- Enable next/prev buttons to cross module boundaries
- Automatically advance to next module when completing last lesson
- Go to last lesson of previous module when navigating back
- Update overlay text: "Perfect Match!" → "CRISPY! ٩(◕‿◕)۶"
- Update success hint in English and German versions
- Fun branding touch matching the app name
- Convert help and reset modals to native <dialog> elements
- Content is now in HTML, not dynamically generated via JS
- Use dialog.showModal() and dialog.close() native API
- Dialog handles Escape key natively for closing
- Fix list indentation in help dialog with proper padding
- Add styled kbd elements for keyboard shortcuts
- Separate dialogs for help and reset confirmation
- Apply same changes to German version
Benefits:
- Better accessibility (native focus trapping, escape handling)
- Simpler JavaScript (no DOM manipulation for content)
- Content visible in HTML source for easier editing
- Native backdrop styling via ::backdrop
- Add history extension to CodeMirror for undo/redo support
- Ctrl+Z for undo, Ctrl+Shift+Z for redo now work
- Add toolbar buttons: ↶ Undo, ↷ Redo, ⟲ Reset
- Reset button restores editor to initial lesson code
- Add .btn-icon and .editor-tools CSS styles
- Replace textarea with CodeMirror 6 for syntax highlighting
- Add Emmet abbreviation expansion (Tab to expand)
- Support HTML and CSS language modes with autocomplete
- Add dark theme matching app design
- Tab indentation with Shift-Tab for outdent
- Update help modal with Emmet shortcuts
- Implement 50/50 split layout (left: instructions + editor, right: preview)
- Replace always-visible sidebar with slide-out drawer menu
- Move footer, progress, and settings into sidebar
- Add toggleable expected result overlay (hidden by default)
- Create new hint system with step progress indicators
- Add ghost button styles for modal and text button for sidebar reset
- Fix HTML lesson task instruction and typo ("important" not "importing")
- Add padding to preview frames to prevent corner clipping
- Optimize layout for iPadOS and tablet devices
- Add HTML mode support with new validation types (element_exists,
element_count, attribute_value, element_text, parent_child, sibling)
- Create 3 HTML lesson modules: Elements, Forms Basic, Forms Validation
- Implement side-by-side preview comparison (Your Output vs Expected)
- Add merge animation with "Perfect Match!" overlay on validation success
- Render expected output from solutionCode field in lesson JSON
- Update schema to support HTML mode and solutionCode
- Reorder modules: HTML first, then CSS, then Tailwind
- Update tests for new functionality
