feat(docs): light-mode support for the brand theme

[alandefreitas]

This PR brings light mode up to the same level as dark mode on both the documentation site and the landing page

Changes

A handful of components still used parameters from dark mode. Those are now variables. It mostly includes changes to code blocks, previews, the logo, small icons, and the navbars. Dark mode looks the same as before.

Testing

Visual inspection. There's nothing automated to add.

Documentation

None needed. This is the documentation site's own styling.

[github-actions]

⚠️ Warnings

Warning

PR description is short (460 chars) relative to the size of this change (~442 lines of churn). Aim for around 703 characters — expand on rationale, testing, and reviewer guidance.

Warning

Commits look like feature/fix work, but the PR only changes docs. Double-check commit types.

🧾 Changes by Scope

Scope	Lines Δ%	Lines Δ	Lines +	Lines -	Files Δ	Files +	Files ~	Files ↔	Files -
📄 Docs	100%	442	331	111	14	-	14	-	-
Total	100%	442	331	111	14	-	14	-	-

Legend: Files + (added), Files ~ (modified), Files ↔ (renamed), Files - (removed)

🔝 Top Files

• docs/website/styles.css (Docs): 167 lines Δ (+118 / -49)
• docs/ui/src/css/vars.css (Docs): 95 lines Δ (+91 / -4)
• docs/ui/src/css/custom.css (Docs): 35 lines Δ (+34 / -1)

Generated by 🚫 dangerJS against bc87c10

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.12%. Comparing base (a51d162) to head (bc87c10).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1254   +/-   ##
========================================
  Coverage    83.12%   83.12%           
========================================
  Files           35       35           
  Lines         3662     3662           
  Branches       844      844           
========================================
  Hits          3044     3044           
  Misses         410      410           
  Partials       208      208           

Flag	Coverage Δ
bootstrap	83.12% <ø> (ø)

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[cppalliance-bot]

An automated preview of the documentation is available at https://1254.mrdocs.prtest2.cppalliance.org/index.html

If more commits are pushed to the pull request, the docs will rebuild at the same URL.

2026-08-11 01:37:20 UTC