[XTR] Day Night Mode 1.0.0

Enhance your community's user experience with a sleek and native Day/Night mode toggler. This add-on integrates directly with XenForo 2.3's powerful Style Variations system, allowing your users to switch between Light and Dark modes with a single click from the navigation bar.

Unlike complex style switchers or heavy JavaScript solutions, [XTR] Day Night Mode is lightweight and smart. It respects the user's operating system preferences upon first visit and remembers their manual choice for future visits.

Key Features

• Native XF 2.3 Support: Built strictly on XenForo's new style-variation architecture. No external libraries or complex JavaScript logic.
• Smart Detection: On the first load (without cookies), the system automatically detects the user's OS preference (Dark/Light mode) via CSS prefers-color-scheme.
• Context-Aware Toggle:
  • If the system/site is Dark, the button allows switching to Light.
  • If the system/site is Light, the button allows switching to Dark.
• Customizable Icons: Choose from a variety of predefined FontAwesome icons (Sun, Moon, Star, Lightbulb, etc.) directly from the Admin Panel.
• Lightweight: Uses CSS for visibility logic, ensuring zero layout shift and blazing fast performance.
• Robust Implementation: Uses Regex-based template modifications to ensure compatibility even if your theme has minor whitespace changes.

Admin Options
You can easily configure the look and feel from Setup > Options > [XTR] Day Night Mode:

• Select specific icons for the Light Mode button via radio buttons.
• Select specific icons for the Dark Mode button via radio buttons.