Add Dark Mode Support with Three-State Theme Toggle#78
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chriselsen merged 2 commits intomasterfrom Feb 17, 2026
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- Add three-state theme toggle (auto/light/dark) following mkdocs-material pattern - Support automatic OS-based theme switching with prefers-color-scheme - Apply responsive font sizes to dark theme - Fix masthead background color in dark mode - Force FontAwesome icons to inherit color in dark mode - Create and swap dark logo version (white text) automatically - Override SVG colors to use currentColor in dark mode - Add white background to content images for visibility in dark mode - Fix search icon color to white in dark mode - Remove focus outline from theme toggle button - Add tooltips showing next action on theme toggle hover - Fix theme toggle reliability across page navigation
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Overview
Implements dark mode support for the Jekyll website with a three-state theme toggle (auto/light/dark) that respects OS preferences and persists user choice across sessions.
Changes
Theme Toggle System
prefers-color-schemepreferencelocalStorageedgecloud.png(light) andedgecloud-dark.png(dark)<head>applies theme before page renderDark Mode Styling
Files Modified
assets/js/theme.js: Theme toggle logic with three-state systemassets/css/dark.scss: Dark theme stylesheet with responsive typography_includes/head/custom.html: FOUC prevention script_includes/masthead.html: Theme toggle button with three icons_sass/minimal-mistakes/_theme-toggle.scss: Theme toggle button styling_config.yml: Logo configurationassets/images/edgecloud-dark.png: Dark mode logo variant_includes/search/algolia-search-scripts.html: Upgraded to InstantSearch.js v2.10.4Algolia Search Upgrade
Known Issues
Testing