50:I[314491,["/_next/static/immutable/chunks/3arlv5bvukoo2.js","/_next/static/immutable/chunks/39v64hmfyo-sr.js","/_next/static/immutable/chunks/2nvof3-29tvc3.js","/_next/static/immutable/chunks/3tjobt77z_9dj.js","/_next/static/immutable/chunks/04j_o97cgxn2x.js","/_next/static/immutable/chunks/3upr08c9vtj8w.js","/_next/static/immutable/chunks/1ww0328si-u8x.js","/_next/static/immutable/chunks/11mfl5ymqld9-.js","/_next/static/immutable/chunks/2xxcqy6ppds3l.js","/_next/static/immutable/chunks/3j06ow7w40nxu.js","/_next/static/immutable/chunks/31nn7jwsjvqii.js","/_next/static/immutable/chunks/43_s7jweyypoh.js","/_next/static/immutable/chunks/0p6vao205o1jc.js","/_next/static/immutable/chunks/1_kyvgkyokw92.js","/_next/static/immutable/chunks/1lo-zn37dolb5.js","/_next/static/immutable/chunks/1v8k6yxw1rg0u.js"],"FilesView"] 51:T23b6,"use client"; import { useEffect, useRef, type CSSProperties, type ReactNode } from "react"; // A grid of cards with one soft spotlight that follows the cursor across the whole grid. // It lights each card's border and surface, and the card under the cursor tilts a little. // Only the grid listens to the pointer. It writes the spotlight position onto every card as two // CSS variables, and the card styles do the rest. No library needed. export type SpotlightCard = { /** The card's heading. */ title: string; /** One or two sentences under the heading. */ body: string; /** A small icon shown in a box above the heading, e.g. an inline SVG. */ icon?: ReactNode; /** A picture across the top of the card. */ image?: string; /** Alt text for the picture. Leave empty if it is only decoration. */ imageAlt?: string; }; export type SpotlightCardsProps = { /** The cards, in reading order. */ cards: SpotlightCard[]; /** How far the light reaches from the cursor, in pixels. */ spotlightSize?: number; /** How bright the light is, from 0 (off) to 1 (strong). */ intensity?: number; /** The most a card tilts toward the cursor, in degrees. 0 turns the tilt off. */ tilt?: number; /** The colour of the light. Any CSS colour. */ color?: string; /** How many columns on a wide screen. Narrow screens use fewer, see minCardWidth. */ columns?: number; /** Space between the cards, in pixels. */ gap?: number; /** A card never gets narrower than this, in pixels, so phones drop to fewer columns. */ minCardWidth?: number; /** Extra classes for the grid. */ className?: string; /** Extra classes for each card, e.g. a different radius or padding. */ cardClassName?: string; }; // The ring is a 1px frame cut out of a filled box with a mask (the middle is subtracted) const ringMask: CSSProperties = { padding: 1, mask: "linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0)", maskComposite: "exclude", WebkitMask: "linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0)", WebkitMaskComposite: "xor", }; const clamp = (value: number, min: number, max: number) => Math.min(max, Math.max(min, value)); export function SpotlightCards({ cards, spotlightSize = 380, intensity = 0.6, tilt = 6, color = "#14b8a6", columns = 3, gap = 16, minCardWidth = 160, className = "", cardClassName = "", }: SpotlightCardsProps) { const gridRef = useRef(null); // Read when the pointer moves, so changing the tilt never rebuilds the listeners const tiltRef = useRef(tilt); tiltRef.current = tilt; useEffect(() => { const grid = gridRef.current; if (!grid) return; const reduced = window.matchMedia("(prefers-reduced-motion: reduce)").matches; const target = { x: 0, y: 0 }; const light = { x: 0, y: 0 }; let frame = 0; let lastTime = 0; let inside = false; const items = () => Array.from(grid.children) as HTMLElement[]; // Give every card the light's position measured from its own top-left corner const paintLight = () => { for (const card of items()) { card.style.setProperty("--x", `${light.x - card.offsetLeft}px`); card.style.setProperty("--y", `${light.y - card.offsetTop}px`); } }; // Only the card under the pointer tilts. The pointer is turned into -1..1 across that card. const paintTilt = () => { const max = reduced ? 0 : tiltRef.current; for (const card of items()) { const px = target.x - card.offsetLeft; const py = target.y - card.offsetTop; const over = inside && px >= 0 && py >= 0 && px <= card.offsetWidth && py <= card.offsetHeight; const across = over ? clamp((px / card.offsetWidth) * 2 - 1, -1, 1) : 0; const down = over ? clamp((py / card.offsetHeight) * 2 - 1, -1, 1) : 0; card.style.setProperty("--ry", `${across * max}deg`); card.style.setProperty("--rx", `${-down * max}deg`); card.style.setProperty("--lift", over && max > 0 ? "1.012" : "1"); } }; // The light eases toward the pointer, so it glides instead of snapping const step = (now: number) => { const seconds = Math.min(0.05, (now - lastTime) / 1000); lastTime = now; const ease = 1 - Math.exp(-seconds * 18); light.x += (target.x - light.x) * ease; light.y += (target.y - light.y) * ease; paintLight(); const close = Math.hypot(target.x - light.x, target.y - light.y) < 0.3; frame = close ? 0 : requestAnimationFrame(step); }; const follow = (event: PointerEvent, snap: boolean) => { const rect = grid.getBoundingClientRect(); target.x = event.clientX - rect.left; target.y = event.clientY - rect.top; if (snap || reduced) { light.x = target.x; light.y = target.y; paintLight(); } else if (!frame) { lastTime = performance.now(); frame = requestAnimationFrame(step); } paintTilt(); }; const turnOn = (event: PointerEvent) => { if (!event.isPrimary) return; // A fresh entry starts the light under the pointer instead of sliding in from the last spot const fresh = !inside; inside = true; grid.style.setProperty("--spot", "1"); follow(event, fresh); }; const turnOff = () => { inside = false; grid.style.setProperty("--spot", "0"); paintTilt(); }; grid.addEventListener("pointermove", turnOn); grid.addEventListener("pointerdown", turnOn); grid.addEventListener("pointerleave", turnOff); grid.addEventListener("pointercancel", turnOff); return () => { grid.removeEventListener("pointermove", turnOn); grid.removeEventListener("pointerdown", turnOn); grid.removeEventListener("pointerleave", turnOff); grid.removeEventListener("pointercancel", turnOff); if (frame) cancelAnimationFrame(frame); }; }, []); const glowAlpha = clamp(intensity, 0, 1); const mix = (percent: number) => `color-mix(in srgb, ${color} ${Math.round(percent * 100)}%, transparent)`; const light = (percent: number) => `radial-gradient(${spotlightSize}px circle at var(--x, -999px) var(--y, -999px), ${mix(percent)}, transparent)`; const columnCount = Math.max(1, Math.round(columns)); // As many columns as fit, up to `columns`, and never narrower than minCardWidth const cardWidth = `max(${minCardWidth}px, calc((100% - ${(columnCount - 1) * gap}px) / ${columnCount}))`; return (

{/* The always-on hairline border */} {card.image ? (

) : null}
{card.icon ? ( {card.icon} ) : null}
{card.title}

{card.body}

{/* The light on the surface, then the light on the border. Both fade with --spot. */}

); } 4f:["$","div",null,{"className":"mt-3 flex min-h-0 min-w-0 flex-1 flex-col gap-3","children":[null,["$","$L50",null,{"files":[{"path":"registry/dimaac/spotlight-cards/spotlight-cards.tsx","content":"$51","type":"registry:component","target":"components/dimaac/spotlight-cards.tsx"}],"className":"h-[70svh] min-h-80"}]]}]

{card.title}