docs: Update build-progress.txt for subtask 4.5

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2026-01-11 14:09:03 +01:00
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@@ -334,3 +334,46 @@ Implementation details:
Committed: 443ec4c Committed: 443ec4c
Status: ✓ Completed Status: ✓ Completed
Committed: 443ec4c
Status: ✓ Completed
=== 2026-01-11 - Subtask 4.5 Completed ===
Added conceptual explanations to layouts module (07-layouts.json).
Implementation details:
- Added 'concept' objects to all 4 lessons explaining different layout systems and when to use each approach
- Lesson 1 (Flex Basics):
* Explanation of Flexbox as one-dimensional layout system with main/cross axes
* Diagram showing flexbox container with axis alignment (justify-content for main axis, align-items for cross axis)
* Visual comparison of default behavior vs centered layout
* Main axis vs cross axis distinction for row and column directions
* Container vs Item: display: flex, justify-content, align-items are container properties
- Lesson 2 (Flex Advanced):
* Explanation of flex shorthand (flex-grow, flex-shrink, flex-basis) and flex-wrap
* Detailed diagram showing how flex: 1 1 100px works with space distribution
* Visual comparison of wrapping vs non-wrapping behavior in narrow containers
* Common flex patterns: flex: 1, flex: auto, flex: none, flex: 1 1 100px
* Container vs Item: flex-wrap is container property, flex shorthand is item property
- Lesson 3 (Grid Basics):
* Explanation of CSS Grid as two-dimensional layout system with rows AND columns
* Diagram comparing Flexbox (1D) vs Grid (2D) layout capabilities
* Visual breakdown of fr units and gap spacing calculations
* Examples of different fr ratios (1fr 2fr 1fr)
* Guidance on when to use Grid vs Flexbox for different scenarios
* Container vs Item: display: grid, grid-template-columns, gap are container properties
- Lesson 4 (Grid Placement):
* Explanation of grid line numbering system (lines run between cells, not through them)
* Diagram showing line-based placement and spanning with grid-column: 1 / span 2
* Visual examples of complex spanning layouts (header, sidebar spanning multiple rows)
* Span syntax variations: start/span, start/end, auto-placement
* Benefits of line-based placement over absolute positioning
* Container vs Item: grid-column and grid-row are item properties for placement
- All explanations are beginner-friendly (2-4 sentences)
- Detailed ASCII diagrams illustrate layout systems, axis concepts, grid lines, and when to choose each approach
- Focus on WHY to choose Flexbox (1D layouts) vs Grid (2D layouts) for different use cases
- Real-world examples: navigation bars, card grids, page layouts, featured items
- All concepts include containerVsItem distinctions for clarity
Committed: a7f0761
Status: ✓ Completed