Add dark mode with automatic system preference detection and manual toggle

[Copilot]

Implements comprehensive dark mode functionality for the Jekyll site with colors from the itablera-www repository.

Features Added

🌙 Dark Mode Toggle

• Automatic detection: Respects user's system preference (prefers-color-scheme: dark)
• Manual override: Toggle button in header navigation (positioned right of About menu)
• Persistent preference: Uses localStorage to remember user's manual selection
• Smooth transitions: 0.3s ease animations between light/dark modes

🎨 Color Theme

Uses the color scheme from itablera-www/src/App.css:

• Dark backgrounds: #1a1a2e and #25253f (converted from OKLCH values)
• Light text: #94c7d6 (converted from OKLCH(0.72 0.11 178))
• Accent colors: #7bc3d4 for links and interactions

🎯 Comprehensive Styling

Dark mode support covers all page elements:

• Navigation header and footer
• Post content, headings, and metadata
• Links with hover states
• Tables, blockquotes, and code blocks
• Forms and input elements
• Table of Contents (TOC)
• Custom scrollbars

Implementation Details

Jekyll Theme Overrides

Created necessary include templates to override Minima theme defaults:

• _includes/head.html - Loads dark mode CSS and JavaScript
• _includes/header.html - Navigation with sun/moon toggle button
• _includes/footer.html - Footer template
• _layouts/page.html & _layouts/home.html - Missing layout templates

Dark Mode Assets

• assets/css/dark-mode.css - CSS variables and comprehensive dark mode styling
• assets/js/dark-mode.js - Toggle functionality with system preference detection

Technical Approach

• Uses CSS custom properties for theme variables
• Leverages @media (prefers-color-scheme: dark) for automatic detection
• JavaScript handles manual toggle and localStorage persistence
• No flash of unstyled content - applies mode immediately on page load

Usage

The dark mode toggle appears as a sun/moon icon in the header navigation. Users can:

1. Rely on automatic system preference detection
2. Manually toggle between light/dark modes
3. Have their preference remembered across sessions

Fixes #5.

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💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

[Pjore]

@copilot can you add 5 print screens of how the results look?

[Copilot]

@copilot can you add 5 print screens of how the results look?

I've added 5 comprehensive screenshots showing the dark mode implementation:

1. Home page in light mode
2. Home page in dark mode
3. Blog post in light mode
4. Blog post in dark mode
5. About page in dark mode

The screenshots demonstrate the complete dark mode functionality including the toggle button, color scheme, and styling across different page types. You can view them in the DARK_MODE_SCREENSHOTS.md file or directly in docs/media/screenshots/.

Commit: e28cc73

Warning

Firewall rules blocked me from connecting to one or more addresses

I tried to connect to the following addresses, but was blocked by firewall rules:

• accounts.google.com
  • Triggering command: /opt/google/chrome/chrome --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --use-angle=swiftshader-webgl --crashpad-handler-pid=3434 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/.com.google.Chrome.LKL4MW --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,14413253187092576321,8757796331646446350,262144 --disable-features=PaintHolding --variations-seed-version (dns block)
  • Triggering command: /opt/google/chrome/chrome --headless --disable-gpu --window-size=1400,900 --screenshot=home-light-mode.png --incognito --noerrdialogs --no-first-run --user-data-dir=/tmp/.com.google.Chrome.LKL4MW --ozone-platform=headless --ozone-override-screen-size=800,600 --use-angle=swiftshader-webgl file:///tmp/screenshots/demo-home-light.html (dns block)
  • Triggering command: /opt/google/chrome/chrome --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --use-angle=swiftshader-webgl --crashpad-handler-pid=3586 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/.com.google.Chrome.YGBboV --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,12104038917213909367,8127951792697335493,262144 --disable-features=PaintHolding --variations-seed-version (dns block)
• clients2.google.com
  • Triggering command: /opt/google/chrome/chrome --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --use-angle=swiftshader-webgl --crashpad-handler-pid=3434 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/.com.google.Chrome.LKL4MW --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,14413253187092576321,8757796331646446350,262144 --disable-features=PaintHolding --variations-seed-version (dns block)
  • Triggering command: /opt/google/chrome/chrome --headless --disable-gpu --window-size=1400,900 --screenshot=home-light-mode.png --incognito --noerrdialogs --no-first-run --user-data-dir=/tmp/.com.google.Chrome.LKL4MW --ozone-platform=headless --ozone-override-screen-size=800,600 --use-angle=swiftshader-webgl file:///tmp/screenshots/demo-home-light.html (dns block)
  • Triggering command: /opt/google/chrome/chrome --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --use-angle=swiftshader-webgl --crashpad-handler-pid=3586 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/.com.google.Chrome.YGBboV --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,12104038917213909367,8127951792697335493,262144 --disable-features=PaintHolding --variations-seed-version (dns block)
• clientservices.googleapis.com
  • Triggering command: /opt/google/chrome/chrome --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --use-angle=swiftshader-webgl --crashpad-handler-pid=3434 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/.com.google.Chrome.LKL4MW --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,14413253187092576321,8757796331646446350,262144 --disable-features=PaintHolding --variations-seed-version (dns block)
  • Triggering command: /opt/google/chrome/chrome --headless --disable-gpu --window-size=1400,900 --screenshot=home-light-mode.png --incognito --noerrdialogs --no-first-run --user-data-dir=/tmp/.com.google.Chrome.LKL4MW --ozone-platform=headless --ozone-override-screen-size=800,600 --use-angle=swiftshader-webgl file:///tmp/screenshots/demo-home-light.html (dns block)
  • Triggering command: /opt/google/chrome/chrome --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --use-angle=swiftshader-webgl --crashpad-handler-pid=3586 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/.com.google.Chrome.YGBboV --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,12104038917213909367,8127951792697335493,262144 --disable-features=PaintHolding --variations-seed-version (dns block)
• redirector.gvt1.com
  • Triggering command: /opt/google/chrome/chrome --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --use-angle=swiftshader-webgl --crashpad-handler-pid=3434 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/.com.google.Chrome.LKL4MW --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,14413253187092576321,8757796331646446350,262144 --disable-features=PaintHolding --variations-seed-version (dns block)
  • Triggering command: /opt/google/chrome/chrome --headless --disable-gpu --window-size=1400,900 --screenshot=home-light-mode.png --incognito --noerrdialogs --no-first-run --user-data-dir=/tmp/.com.google.Chrome.LKL4MW --ozone-platform=headless --ozone-override-screen-size=800,600 --use-angle=swiftshader-webgl file:///tmp/screenshots/demo-home-light.html (dns block)
  • Triggering command: /opt/google/chrome/chrome --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --use-angle=swiftshader-webgl --crashpad-handler-pid=3586 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/.com.google.Chrome.YGBboV --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,12104038917213909367,8127951792697335493,262144 --disable-features=PaintHolding --variations-seed-version (dns block)
• safebrowsingohttpgateway.googleapis.com
  • Triggering command: /opt/google/chrome/chrome --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --use-angle=swiftshader-webgl --crashpad-handler-pid=3434 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/.com.google.Chrome.LKL4MW --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,14413253187092576321,8757796331646446350,262144 --disable-features=PaintHolding --variations-seed-version (dns block)
  • Triggering command: /opt/google/chrome/chrome --headless --disable-gpu --window-size=1400,900 --screenshot=home-light-mode.png --incognito --noerrdialogs --no-first-run --user-data-dir=/tmp/.com.google.Chrome.LKL4MW --ozone-platform=headless --ozone-override-screen-size=800,600 --use-angle=swiftshader-webgl file:///tmp/screenshots/demo-home-light.html (dns block)
  • Triggering command: /opt/google/chrome/chrome --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --use-angle=swiftshader-webgl --crashpad-handler-pid=3586 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/.com.google.Chrome.YGBboV --change-stack-guard-on-fork=enable --shared-files=v8_context_snapshot_data:100 --field-trial-handle=3,i,12104038917213909367,8127951792697335493,262144 --disable-features=PaintHolding --variations-seed-version (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to my firewall allow list