Feat/dark mode support

[Abhinandankaushik]

Added dark mode support and toggle button for changing the mode (eg. ligh,dark)
also improve readability by adding some extra line of CSS

fixed issue : #146

[Copilot]

Pull request overview

This pull request implements dark mode support for the Apache DataFusion blog website, addresses multiple spelling errors across historical blog posts, and introduces automated spell checking via a new GitHub Actions workflow.

Changes:

• Implements a comprehensive dark mode feature with toggle button, CSS variables, and localStorage persistence
• Corrects 9 spelling errors across 7 blog posts (retrieve, libraries, performance, Aggregate, initialization, threshold, publicly, including, MemoryManager)
• Adds automated typo checking workflow using the typos tool to prevent future spelling errors

Reviewed changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
content/theme/templates/styles.html	Adds references to dark mode CSS and JavaScript files
content/theme/templates/menu.html	Adds theme toggle button to navigation bar with accessibility attributes
content/js/darkmode.js	Implements dark mode toggle functionality with localStorage persistence and system preference detection
content/css/darkmode.css	Provides comprehensive dark mode styling with GitHub-inspired color palette and responsive design
content/blog/*.md (7 files)	Corrects spelling errors in blog posts
_typos.toml	Configures typo checker with custom dictionary and ignore patterns
.github/workflows/typo-check.yml	Adds GitHub Actions workflow for automated spell checking on blog posts

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[Jefffrey]

Could you rebase the branch to remove the typo changes, and attach some screenshots of this working locally?

• Might need a bit of a workaround to fix local testing: Unpin infra repo commit hash in Makefile #144

[Abhinandankaushik]

hey @Jefffrey
as you instructed i have fix the merge conflict and here is the new feature screenshots

light-mode:

after-dark-mode:

i try to make website look little good if this changes are not suitable i will change it as it's original design

[Jefffrey]

I think the CSS theme is changing too much between dark/light mode here; can we keep the changes related to colour only and not introduce changes like the boxes around each post?

[Abhinandankaushik]

I think the CSS theme is changing too much between dark/light mode here; can we keep the changes related to colour only and not introduce changes like the boxes around each post?

yeah sure i will do that

[Abhinandankaushik]

hey @Jefffrey
here is the fixed screenshot of the website :
Light-Mode :

Dark-Mode :

if this is okay i will push this changes ?

[Abhinandankaushik]

hey @Jefffrey
please review it when you get time
and let me know if any further changes are required or not
Thank's

[Jefffrey]

Some of the example boxes have hard to read text in dark mode:

• See the dark red text, doesn't really work well with the dark background

Also I'm seeing some odd behaviour where some sizes change between the themes:

Screen.Recording.2026-02-09.at.15.55.48.mov

• See CASE

And also hovering over images brightens them:

Screen.Recording.2026-02-09.at.15.56.08.mov

[Abhinandankaushik]

Thankyou for your feedback i will surely fixed all this bugs and update you.

[Abhinandankaushik]

hey @Jefffrey
i have made some changes from you feedback and here are the demo video of that changes :

Video.Project.5.mp4

Please review it when you get time and let me know if any further improvement are required or not .
Thank's

[Abhinandankaushik]

hey @Jefffrey can you please review this one
i create it around one week ago and it still in pending
i understand that your are busy but please if you can take a little time from you schedule to review it would be great .
Thankyou!

[Jefffrey]

Apologies, I have a large backlog to work through at the moment so it'll be a while before I'm able to take a look at this again

[Abhinandankaushik]

hey @Jefffrey just quick followup when you get free please review this pr i am waiting for your response ,
Thankyou