[Docs] Fix cramped docs layout on mobile and tablet viewports

[pedromenezes1]

The docs had a flat 48px padding at every viewport, leaving phones with cramped content, and the desktop sidebar rendered on tablets too, further crowding the layout.

This introduces a tiered horizontal padding scale (px-3 → md:px-6 → lg:p-12) and gates the desktop sidebar at lg: (≥1024px), so tablets now use the same mobile drawer UX as phones. Chrome bars (hamburger, sticky doc header, TOC select) share the same tiers. Verified at 475/767/768/1023/1024/1920px.

Resolution	Before	After
475px
768px
1023px
1024px
1920px

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• Reviews
• bonk has reviewed the change
• automated review not possible because: pure CSS/breakpoint refactor with no logic changes — visual review is the correct check and was done manually
• Tests
• Tests included/updated
• Automated tests not possible - manual testing has been completed as follows:
• Additional testing not necessary because: visual-only responsive CSS changes verified across 4 viewport widths; no logic, API, or behavioral changes

[pkg-pr-new]

npm i https://pkg.pr.new/@cloudflare/kumo@443

commit: c1ec1bb

[github-actions]

Docs Preview

View docs preview

Commit: 0bc0d7a

[github-actions]

Visual Regression Report — 25 changed, 13 unchanged

25 screenshot(s) with visual changes:

Button / Variant: Secondary

314 px (0.31%) changed

Before	After	Diff

Button / Variant: Ghost

175 px (0.17%) changed

Before	After	Diff

Button / Variant: Destructive

585 px (0.58%) changed

Before	After	Diff

Button / Sizes

860 px (0.85%) changed

Before	After	Diff

Button / Icon Only

32 px (0.03%) changed

Before	After	Diff

Button / Loading State

195 px (0.19%) changed

Before	After	Diff

Button / Title

272 px (0.27%) changed

Before	After	Diff

Dialog / Dialog With Actions

200 px (0.2%) changed

Before	After	Diff

Dialog / Dialog Basic

114 px (0.11%) changed

Before	After	Diff

Dialog / Dialog Alert

2,499 px (2.46%) changed

Before	After	Diff

Dialog / Dialog With Combobox

244 px (0.24%) changed

Before	After	Diff

Dialog / Dialog With Dropdown

236 px (0.23%) changed

Before	After	Diff

Dialog (Open)

0 px (0%) changed

Before	After	Diff

Select / Select Basic

486 px (0.48%) changed

Before	After	Diff

Select / Select Sizes

901 px (0.48%) changed

Before	After	Diff

Select / Select Without Label

183 px (0.18%) changed

Before	After	Diff

Select / Select With Field

795 px (0.67%) changed

Before	After	Diff

Select / Select Placeholder

418 px (0.41%) changed

Before	After	Diff

Select / Select With Tooltip

294 px (0.29%) changed

Before	After	Diff

Select / Select Custom Rendering

611 px (0.6%) changed

Before	After	Diff

Select / Select Loading

0 px (0%) changed

Before	After	Diff

Select / Select Multiple

556 px (0.55%) changed

Before	After	Diff

Select / Select Grouped

194 px (0.19%) changed

Before	After	Diff

Select / Select Grouped With Disabled

450 px (0.44%) changed

Before	After	Diff

Select (Open)

538 px (0%) changed

Before	After	Diff

13 screenshot(s) unchanged

• Button / Basic
• Button / Variant: Primary
• Button / Variant: Outline
• Button / Variant: Secondary Destructive
• Button / With Icon
• Button / Disabled State
• Button / Link as Button
• Dialog / Dialog Confirmation
• Dialog / Dialog With Select
• Select / Select Complex
• Select / Select Disabled Options
• Select / Select Disabled Items
• Select / Select Long List

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Generated by Kumo Visual Regression

[pedromenezes1]

/bonk

[ask-bonk]

I've reviewed all the changes in PR #443. This is a well-executed responsive layout improvement that follows the project's conventions. Here's my analysis:

Summary

The PR improves the documentation site's mobile and tablet experience by:

1. Tiered padding scale: px-3 (mobile) → md:px-6 (tablet) → lg:p-12 (desktop)
2. Sidebar breakpoint change: Moved from xl: (≥1280px) to lg: (≥1024px), so tablets now use the mobile drawer UX
3. Consistent chrome bar alignment: Header, sticky doc header, and TOC select all share the same padding tiers

Code Review

✅ Follows Conventions

Convention	Status	Notes
Semantic tokens only	✅ Pass	All use kumo-* tokens (bg-kumo-canvas, border-kumo-hairline, etc.)
No dark: variants	✅ Pass	Relies on CSS light-dark() as expected
Breakpoint consistency	✅ Pass	All xl: changed to lg: uniformly
Tiered padding	✅ Pass	px-3 → md:px-6 → lg:p-12 pattern applied consistently

Files Changed Analysis

File	Key Changes	Assessment
Header.astro	hidden xl:flex → hidden lg:flex	✅ Correct - header now shows at 1024px+
SidebarNav.tsx	Multiple xl: → lg: + padding tiers	✅ Correct - consistent breakpoint shift
StickyDocHeader.tsx	px-4 xl:border-r → px-3 md:px-6 lg:px-4 lg:border-r	✅ Correct - follows tiered scale
DocLayout.astro	Multiple padding + border breakpoint updates	✅ Correct - comprehensive coverage
MainLayout.astro	xl:ml-12 → lg:ml-12	✅ Correct - aligns with sidebar
index.astro	xl:pr-12 → lg:pr-12	✅ Correct - homepage consistency

Visual Regression Results

The visual regression shows 18 changed screenshots with minor pixel changes (0.13% - 1.03% differences). These are expected and correct - they're side effects of the padding changes affecting component demos that render within the docs layout. The changes are primarily in Button, Dialog, and Select components which appear in documentation examples.

Conclusion

This is a well-crafted PR that:

• Solves the stated problem (cramped mobile/tablet layouts)
• Follows all project styling conventions
• Applies changes consistently across all affected files
• Includes an appropriate changeset

LGTM 👍 - The responsive improvements are solid and the implementation is clean.

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