Synchronizes 72 lesson files across 5 languages (de, pl, es, ar, uk) to match
the English source. This ensures code, solutions, and validations are identical
while only title, description, task, and message fields are translated.
Changes include:
- Box model lessons (01-box-model.json)
- Units and variables (05-units-variables.json)
- Transitions and animations (06-transitions-animations.json)
- Responsive design (08-responsive.json)
- HTML elements (20-html-elements.json)
- HTML forms basic and validation (21, 22)
- HTML details/summary, progress/meter (23, 24)
- HTML datalist, dialog, fieldset (25, 27, 28)
- HTML tables and SVG (30, 32)
- HTML marquee (31)
- Welcome module (00-welcome.json)
Fixes validation inconsistencies and removes extra content that exceeded
English source. German translations were largely correct; Polish, Spanish,
Arabic, and Ukrainian required full translations.
- Updated de, pl, es, ar, uk flexbox lessons to use identical structure
- All 6 lessons now match English: previewHTML, validations, solutions
- Only title, description, task, and message fields are translated
- Real-world examples: nav menus, headers, cards, toolbars
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Task text now says "Add property: value" instead of "Set property on selector"
since the selector is already shown in the editor via codePrefix.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
- Updated de, pl, es, ar, uk translations to have identical structure
- All 10 lessons now match English: code, solutions, validations
- Only title, description, task, and message fields are translated
- Removed obsolete lessons not present in English version
🤖 Generated with [Claude Code](https://claude.com/claude-code)
- Add scale transition (50% → 100%) to crispy badge animation
- Rotate through random encouraging quotes on completion
- Keep gradient border visible after completing a lesson
- Match completion badge gradient colors to glow effect
- Improve bounce animation with elastic bezier curve
CSS Basics:
- Rewrite lessons 3-10 with real UI components (coffee shop, dashboard, buttons)
- Remove artificial examples with dashed borders
- Students write full selectors when learning selector syntax
- Use codePrefix only when focus is on property concepts
Typography:
- Replace Georgia font with universal monospace for code examples
- Use system-ui throughout for consistent rendering
- Replace text-shadow with text-transform and letter-spacing
- Add rich descriptions explaining the "why" behind each property
- Border increased from 4px to 6px
- Glow layer uses same conic-gradient with 20px blur
- Reduced preview-frame padding to compensate
- Higher glow opacity (0.8) for more vibrant effect
Based on https://codetv.dev/blog/animated-css-gradient-border
- Uses @property for smooth angle interpolation
- Two backgrounds: padding-box + border-box approach
- Blurred glow layer synced with border rotation
- Works in Chrome, Safari, Edge (not Firefox)
Use transform: rotate(-360deg) to physically spin the conic-gradient
around the preview border. Two layers:
- Blurred glow layer (z-index: -2)
- Crisp border using mask-composite (z-index: -1)
The gradient colors (purple/magenta/cyan/violet) now visually travel
anti-clockwise around the border like Gemini's UI.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Previous implementation used CSS @property which isn't supported in
Firefox. New approach uses animated box-shadow with three layers:
- 3px solid border cycling through colors
- 15px inner glow
- 30px outer glow
Colors cycle: purple → magenta → cyan → violet → purple, then fade out.
Works in all modern browsers.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
- Remove bouncing "CRISPY" text animation (dvd-bounce)
- Add rotating conic-gradient border with glow effect
- Colors: purple (#9b59b6), magenta (#e040fb), cyan (#00bcd4), violet (#7c4dff)
- Animation plays once (2.5s) then fades out so students can continue
- Update success colors from green to purple theme:
- success-color: #9b6dd4
- success-color-dark: #7c4dff
- success-color-light: #c9b8e8
- Uses CSS @property for animating conic-gradient angle
- Two layers: blurred glow + crisp border using mask-composite
🤖 Generated with [Claude Code](https://claude.com/claude-code)
- Add CSS Colors, Typography, Advanced Selectors, and Grid modules
- Remove deprecated HTML Marquee module from all languages
- Remove redundant div & span lesson from HTML Block & Inline
- Move SVG module from HTML to CSS section
- Enhance first lessons with comprehensive explanations:
- Flexbox: historical context, axes concept
- Colors: named colors, background-color explained
- Grid: comparison to Flexbox, key properties
- Swap header logo highlight (CRISPIES instead of CODE)
- Use English fallbacks for new modules in non-EN languages
- Fix test to include 'playground' mode
New path: 19 modules (~78 lessons) vs previous 16 modules (62 lessons)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
- Add dialog to confirm resetting code to initial state
- Allow users to skip confirmation with "don't show again" checkbox
- Save preference to user settings
- Improve i18n and CodeEditor components
Update task instructions from old format to match English source:
- Old: "Add <kbd>padding: 1rem</kbd> to <kbd>.box</kbd>"
- New: "Set <kbd>padding</kbd> to <kbd>1rem</kbd>"
Removes redundant class name references since codePrefix shows the selector.
Affected languages: ar, es, pl, uk
- Hello World lesson now styles plain text (no h1 required)
- Added syntax examples to CSS Variables, calc(), Media Queries, Flexbox, Grid
- Added goodbye/offboarding module with contribution encouragement
- Fixed validation in welcome lesson (Hello World instead of Hello)
- Replaced 'quoted text' with <code>quoted text</code> in all task descriptions
- Added syntax examples to Transitions and Keyframes lessons
- Updated all language versions (en, de, pl, es, ar, uk)
- Changed solution in 00-welcome.json from "Hallo Welt" to "Hello World"
- Added missing solution fields to 01-box-model.json (8 lessons)
- Added missing solution fields to 05-units-variables.json (4 lessons)
- Added missing solution fields to 06-transitions-animations.json (4 lessons)
- Added missing solution fields to 08-responsive.json (4 lessons)
- Fixed flexbox.json class names from .green/.red/.yellow to .box1/.box2/.box3
- Added missing solution fields to flexbox.json (6 lessons)
German translations now keep all CSS code in English for maintainability,
with only instructional text translated.
- Swap left/right panels in RTL mode
- Flip left panel border to left side
- Flip hint border to right side
- Flip lessons container indentation (margin, border, padding)
- Flip module expand icon and lesson checkmark margins
- Flip toggle switch slider margin
- Reverse setting row and preview controls
- 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
- Language switcher now shows current language code (EN, DE, PL, etc.)
- Add RTL layout support for Arabic (dir="rtl" on html element)
- Sidebar slides from right in RTL mode
- Flip horizontal layouts, navigation, and text alignment for RTL
- 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
