Want a dark mode switch for Mediumish
 
     Table of contents         Why add a dark mode switch?      How dark mode works (simple)      Design and accessibility considerations      CSS approach: variables and theme rules      HTML markup: toggle button      JavaScript: saving preference and toggling      Integrating with the Mediumish theme      Handling images and code syntax highlighting      Testing, troubleshooting, and deployment      FAQ     Why add a dark mode switch?  Dark mode  has moved beyond a trendy visual tweak — it improves legibility in low-light environments, reduces perceived glare on OLED/mobile displays , and can make reading long articles more comfortable at night. For a content-focused theme like Mediumish, a simple dark mode switch boosts user experience and can reduce bounce rates by letting readers choose the look that fits their environment.  Adding a dark mode switch also signals to users that your site is modern and accessible. It is an evergreen UX enhancement: once implemented correctly, it ke...