Spotlight Cursor
A soft light or glow follows the mouse, revealing or highlighting the area beneath. Creates a flashlight or stage-light effect.
Also called: cursor glow, flashlight effect, radial follow
Follow the light
A radial gradient tracks your cursor position
How it works
On mousemove, set CSS custom properties --x and --y. A pseudo-element uses radial-gradient(circle at var(--x) var(--y), ...).