Built startab, a custom new-tab dashboard that replaces your browser’s default tab with NASA’s Astronomy Picture of the Day as a full-screen background (supporting both images and videos, including YouTube/Vimeo embeds), a live clock, a geolocation-based weather widget with forecast, and a localStorage-backed shortcuts grid, all wrapped in a custom glassmorphism UI built from scratch. The trickiest part was keeping text readable against a background that changes every day, which I solved with a canvas-based brightness sampler that flips text between white and black depending on the image, plus switching several UI elements from a single global scroll threshold to per-element getBoundingClientRect() checks so each one reacts to its own position on screen. I’m most proud of how that adaptive theming ties everything together – the clock, weather widget, and buttons all smoothly shift color based on what’s behind them, which makes it feel a lot more polished than just a static background with white text slapped on. To test it: allow geolocation for local weather (denying it just falls back to a default city), right-click a shortcut to delete it or click “+” to add one, and check back on different days since APOD is sometimes a video instead of a photo.