[ReenigneArcher]

Description

Smooth scrolling and the previous/next navigation and portal-card hover transitions ignored reduced-motion preferences. Enable smooth scrolling and transform transitions only inside prefers-reduced-motion: no-preference, while preserving border-color feedback and the final hover states.

Screenshot

Static appearance is unchanged; motion preferences were verified through computed styles in Chrome.

Issues Fixed or Closed

Addresses all three open css:S9440 findings in Sonar project LizardByte_dockle:

• AaF7eazLkD13o8NHU77z: smooth scrolling.
• AaF7eazLkD13o8NHU770: previous/next link transitions.
• AaF7eazLkD13o8NHU771: portal-card transitions.

Roadmap Issues

Testing

• git diff --check: passed.
• uv run --locked --no-sync python -m pytest tests/test_sphinx_theme.py tests/test_theme.py --no-cov -o addopts= -q --tb=short: 45 tests and 10 subtests passed.
• Headless Chrome with Playwright: verified computed scrolling and transition properties under reduce and no-preference, and preserved final hover transforms for both links and cards. The reduced-motion check fails against origin/master and passes with this change.
• No permanent test was added for this small CSS change; the browser check exercises the actual media queries and cascade, which the current Python asset tests do not evaluate.
• Hosted CI and SonarQube Cloud reanalysis are pending.

Type of Change

• feat: New feature (non-breaking change which adds functionality)
• fix: Bug fix (non-breaking change which fixes an issue)
• docs: Documentation only changes
• style: Changes that do not affect the meaning of the code (white-space, formatting, missing semicolons, etc.)
• refactor: Code change that neither fixes a bug nor adds a feature
• perf: Code change that improves performance
• test: Adding missing tests or correcting existing tests
• build: Changes that affect the build system or external dependencies
• ci: Changes to CI configuration files and scripts
• chore: Other changes that don't modify src or test files
• revert: Reverts a previous commit
• BREAKING CHANGE: Introduces a breaking change (can be combined with any type above)

Checklist

• Code follows the style guidelines of this project
• Code has been self-reviewed
• Code has been commented, particularly in hard-to-understand areas
• Code docstring/documentation-blocks for new or existing methods/components have been added or updated
• Tests have been added or updated for new or modified functionality, including regression tests for bug fixes

AI Usage

See our AI usage policy.

• AI tools were used while preparing this PR

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.17%. Comparing base (6f9e957) to head (983e3a8).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #67   +/-   ##
=======================================
  Coverage   93.17%   93.17%           
=======================================
  Files          12       12           
  Lines        1993     1993           
  Branches       69       69           
=======================================
  Hits         1857     1857           
  Misses        136      136           

Flag	Coverage Δ
Linux-python-3.11	92.74% <ø> (ø)
Linux-python-3.14	92.74% <ø> (ø)
Windows-python-3.11	92.90% <ø> (ø)
Windows-python-3.14	92.90% <ø> (ø)
macOS-python-3.11	92.74% <ø> (ø)
macOS-python-3.14	92.74% <ø> (ø)

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