Cards

Spotlight Hover

Dark card with a peach radial glow and a CSS-masked grid that both track the cursor; auto-orbits when the pointer is away.

csslight complexitysubtle motionpointermobile-ready

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When to use it

Feature cards, pricing tiles, or dashboard widgets on dark backgrounds needing tactile depth without canvas overhead.

When not to

Light-background layouts (background hardcoded dark) or touch-only devices where pointermove never fires.

Working with an AI agent

Every component ships agent-ready metadata. An example instruction for this one:

Adjust the existing palette tokens and effect parameters while preserving manual control. First deliberate input stops idle demo work while manual feedback finishes. Keep demo-v1 lifecycle marker, __foreverPreview.demoEnabled initialization and forever:interactive handler. Preserve reduced motion, visibility suspension and theme switching.

Safe to edit

spotlight color (rgba(238,186,160,0.22) in ::before)
grid cell size (background-size: 26px 26px)
spotlight radius (380px in ::before, 260px in mask)
auto-orbit speed (t += 0.018)
accent dot color (--accent-cyan)
theme tokens (:root dark defaults + [data-theme=light] overrides)

Keep intact

CSS custom properties --c04-x/--c04-y driving both pseudo-elements
rect cache + resize refresh pattern (avoids per-frame reflow)
visibilitychange stop/start guard
theme hook (?theme= bootstrap + forever:theme message listener + theme tokens)
sticky demo-v1 preview lifecycle; stop attract work, retain manual feedback and settling
pointer/touch takeover, keyboard access and visibility suspension
demo-v1 preview lifecycle: initialize demoEnabled from window.__foreverPreview and stop attract work on the window forever:interactive event; retain manual feedback, settling, cleanup and explicit sessions

Known limitations

Grid and glow are pure CSS — no canvas, so spotlight edge is always a smooth gradient with no noise/texture
Card size uses vmin units; very small viewports may clip content before max-width clamps
Control state is local to each mount; format changes preserve preview takeover but create a fresh source instance.
State remains local to each mounted instance; format/theme remount preserves takeover, not component values.

spotlighthovercardglowradial-gradientgrid-maskcursor-tracking

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