/**
 * DitherHero — een grote afgeronde kaart als oproep: label met een pulserende
 * stip, kop, toelichting en een actie; op de achtergrond een gerasterde
 * (dithered) vlek in de merkkleur die traag drijft en sneller gaat als je
 * erop komt.
 *
 * De bron rekende de vlek met een WebGL-shader (@paper-design/shaders-react,
 * 4x4-dithering, 'warp'). Die dependency is vervallen: hier is het raster
 * een SVG-stippenpatroon in --primary, gemaskerd door een radiaal verloop
 * waarvan het middelpunt met Framer drijft (twee MotionValues → één
 * mask-image-string). Geen canvas, geen shader; wel dezelfde indruk.
 * Reduced motion: de vlek staat stil.
 */

"use client";

import { useEffect, useState } from "react";
import type * as React from "react";
import { animate, motion, useMotionValue, useReducedMotion, useTransform } from "framer-motion";
import { useSpringTransition } from "../../primitives/motion";

export interface DitherHeroProps extends Omit<React.HTMLAttributes<HTMLElement>, "title"> {
  eyebrow?: React.ReactNode;
  title: React.ReactNode;
  description?: React.ReactNode;
  /** De actie — het project levert de knop. */
  action?: React.ReactNode;
  /** Seconden per drijfronde in rust; hover verdrievoudigt het tempo. */
  drift?: number;
  /** Minimale hoogte, structureel (default 37.5rem). */
  minHeight?: string;
}

/* 4x4-raster: één stip per cel, als data-URI zonder kleur (currentColor via mask). */
const RASTER = "url(\"data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='4' height='4'%3E%3Ccircle cx='2' cy='2' r='1'/%3E%3C/svg%3E\")";

export function DitherHero({ eyebrow, title, description, action, drift = 14, minHeight = "37.5rem", className, style, ...rest }: DitherHeroProps) {
  const reduced = useReducedMotion() ?? false;
  const [hover, setHover] = useState(false);
  const pop = useSpringTransition("pop", { mass: "content" });
  const t = useMotionValue(0);

  /* De vlek loopt een lissajous-baan; hover = drie keer zo snel, zonder sprong. */
  const seconden = hover ? drift / 3 : drift;
  useEffect(() => {
    if (reduced) return;
    const start = t.get() % 1;
    const ctrl = animate(t, [start, start + 1], { duration: seconden, ease: "linear", repeat: Infinity, repeatType: "loop" });
    return () => ctrl.stop();
  }, [seconden, reduced, t]);
  const masker = useTransform(t, (v) => {
    const x = 50 + 28 * Math.sin(v * Math.PI * 2);
    const y = 50 + 22 * Math.cos(v * Math.PI * 2 * 1.3);
    return `radial-gradient(60% 55% at ${x.toFixed(1)}% ${y.toFixed(1)}%, currentColor 0%, transparent 70%)`;
  });

  return (
    <section
      {...rest}
      className={["fp-dither", className].filter(Boolean).join(" ")}
      style={{ ...style, minHeight }}
      onPointerEnter={(e) => { setHover(true); rest.onPointerEnter?.(e); }}
      onPointerLeave={(e) => { setHover(false); rest.onPointerLeave?.(e); }}
    >
      <motion.span aria-hidden="true" className="fp-dither__vlek" style={{ maskImage: masker, WebkitMaskImage: masker, backgroundImage: RASTER }} />
      <div className="fp-dither__inhoud">
        {eyebrow && (
          <span className="fp-dither__label">
            <span className="fp-dither__stip-vak" aria-hidden="true">
              <motion.span className="fp-dither__ping" animate={reduced ? { opacity: 0 } : { scale: [1, 2.2], opacity: [0.75, 0] }} transition={reduced ? { duration: 0 } : { duration: 1.4, repeat: Infinity, ease: "easeOut" }} />
              <span className="fp-dither__stip" />
            </span>
            {eyebrow}
          </span>
        )}
        <h2 className="fp-dither__titel">{title}</h2>
        {description && <p className="fp-dither__tekst">{description}</p>}
        {action && <motion.div className="fp-dither__actie" whileHover={reduced ? undefined : { scale: 1.04 }} transition={pop}>{action}</motion.div>}
      </div>
    </section>
  );
}

/**
 * Hero-blocks: dither-hero, spotlight-hero, hero-carousel, coverflow-carousel.
 * Importeren in de app-root (de registry-site doet dat in app/globals.css).
 */

/* ── DitherHero ─────────────────────────────────────────────────────────── */

.fp-dither {
  position: relative; overflow: hidden;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  width: 100%; padding: 3rem 1.5rem;
  background: var(--card); color: var(--card-foreground, var(--foreground));
  border: 1px solid var(--border); border-radius: calc(var(--radius) * 6);
}
/* Het raster: stippen in de merkkleur, alleen zichtbaar binnen de drijvende vlek (mask). */
.fp-dither__vlek {
  position: absolute; inset: 0; pointer-events: none;
  color: var(--primary); background-color: var(--primary);
  background-size: 4px 4px; background-blend-mode: normal;
  opacity: 0.4;
  -webkit-mask-repeat: no-repeat; mask-repeat: no-repeat;
}
.fp-dither__inhoud { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; max-width: 56rem; text-align: center; }
.fp-dither__label {
  display: inline-flex; align-items: center; gap: 0.5rem; margin-bottom: 2rem;
  padding: 0.375rem 1rem; font-size: 0.875rem; font-weight: 500; color: var(--primary);
  background: color-mix(in srgb, var(--primary) 5%, transparent); border: 1px solid color-mix(in srgb, var(--primary) 10%, transparent); border-radius: 999px;
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
}
.fp-dither__stip-vak { position: relative; display: inline-flex; width: 0.5rem; height: 0.5rem; }
.fp-dither__ping, .fp-dither__stip { position: absolute; inset: 0; border-radius: 50%; background: var(--primary); }
.fp-dither__titel { margin: 0 0 2rem; font: inherit; font-weight: 500; font-size: clamp(2.5rem, 7vw, 5.5rem); line-height: 1.05; letter-spacing: -0.02em; }
.fp-dither__tekst { margin: 0 0 3rem; max-width: 42rem; font-size: clamp(1rem, 1.5vw, 1.25rem); line-height: 1.6; color: var(--muted-foreground); }
.fp-dither__actie { display: inline-flex; }

/* ── SpotlightHero ──────────────────────────────────────────────────────── */

.fp-spot {
  position: relative; overflow: hidden;
  display: flex; width: 100%;
  background: color-mix(in srgb, var(--background) 96%, var(--foreground)); color: var(--foreground);
  border: 1px solid var(--border); border-radius: var(--radius);
}
.fp-spot__licht {
  position: absolute; left: 0; top: 0; pointer-events: none;
  width: var(--fp-spot-maat); height: var(--fp-spot-maat); border-radius: 50%;
  background: radial-gradient(circle at center, color-mix(in srgb, var(--foreground) 45%, transparent), color-mix(in srgb, var(--foreground) 15%, transparent) 40%, transparent 80%);
  filter: blur(24px);
}
.fp-spot__tekst { position: relative; z-index: 1; flex: 1; display: flex; flex-direction: column; justify-content: center; padding: 2rem; }
.fp-spot__titel { margin: 0; font: inherit; font-weight: 700; font-size: clamp(2rem, 4vw, 3rem); line-height: 1.1; letter-spacing: -0.02em; }
.fp-spot__sub { margin: 1rem 0 0; max-width: 32rem; color: var(--muted-foreground); }
.fp-spot__actie { margin-top: 1.5rem; display: flex; }
.fp-spot__scene { position: relative; flex: 1; min-width: 0; }
@media (max-width: 640px) { .fp-spot { flex-direction: column; } .fp-spot__scene { min-height: 14rem; } }

/* ── HeroCarousel ───────────────────────────────────────────────────────── */

.fp-hcar {
  position: relative; overflow: hidden; width: 100%; height: 100%; min-height: 24rem;
  background: var(--background); color: var(--foreground); user-select: none; outline: none;
}
.fp-hcar:focus-visible { box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--foreground) 40%, transparent); }
.fp-hcar__achter { position: absolute; inset: 0; }
.fp-hcar__achter-foto { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
/* Luminantie van de foto, tint van het accent. */
.fp-hcar__tint { position: absolute; inset: 0; background: var(--fp-hcar-accent); }
.fp-hcar__tint--kleur { mix-blend-mode: color; }
.fp-hcar__tint--donker { mix-blend-mode: multiply; opacity: 0.55; }
.fp-hcar__was { position: absolute; inset: 0; background: linear-gradient(to bottom, color-mix(in srgb, var(--background) 40%, transparent), transparent 40%, transparent 60%, color-mix(in srgb, var(--background) 45%, transparent)); }
.fp-hcar__korrel { position: absolute; inset: 0; pointer-events: none; opacity: 0.22; mix-blend-mode: overlay; background-size: 180px 180px; }

.fp-hcar__balk { position: absolute; inset: var(--fp-hcar-top) 0 auto 0; display: flex; align-items: center; justify-content: center; gap: clamp(1.25rem, 6vw, 4rem); font-size: calc(var(--fp-hcar-label) * 1.15); }
.fp-hcar__knop { appearance: none; border: 0; background: transparent; padding: 0; cursor: pointer; font: inherit; font-size: inherit; color: inherit; opacity: 0.9; transition: opacity var(--motion-instant-duration) var(--motion-instant), transform var(--motion-instant-duration) var(--motion-instant); }
.fp-hcar__knop:hover { opacity: 1; }
.fp-hcar__knop[data-pressed] { transform: scale(0.96); }
.fp-hcar__merk { font-weight: 600; letter-spacing: 0.06em; font-size: calc(var(--fp-hcar-label) * 1.35); }

.fp-hcar__kop { position: absolute; inset: 0 0 auto 0; height: var(--fp-hcar-strook-top); display: flex; flex-direction: column; justify-content: flex-end; padding: 0 var(--fp-hcar-pad) 1.75%; }
.fp-hcar__kop-rij { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 0.5rem 6vw; width: 100%; }
.fp-hcar__titel { margin: 0; font: inherit; font-weight: 600; font-size: var(--fp-hcar-titel); line-height: 0.88; letter-spacing: -0.03em; }
.fp-hcar__regel { display: block; overflow: hidden; }
.fp-hcar__regel-tekst { display: block; }
.fp-hcar__credit { margin: 0; font-size: var(--fp-hcar-label); text-transform: uppercase; letter-spacing: 0.14em; font-variant-numeric: tabular-nums; }
.fp-hcar__feiten { margin-left: auto; display: flex; align-items: flex-end; gap: clamp(1rem, 5.5vw, 4rem); }
.fp-hcar__feit { font-size: var(--fp-hcar-label); text-transform: uppercase; letter-spacing: 0.14em; white-space: nowrap; font-variant-numeric: tabular-nums; }

.fp-hcar__strook { position: absolute; inset: var(--fp-hcar-strook-top) 0 auto 0; height: var(--fp-hcar-kaart-h); }
.fp-hcar__spoor { display: flex; align-items: flex-start; gap: var(--fp-hcar-gap); cursor: grab; }
.fp-hcar__spoor[data-slepen] { cursor: grabbing; }
.fp-hcar__kaart {
  position: relative; flex-shrink: 0; overflow: hidden;
  width: var(--fp-hcar-kaart-w); height: var(--fp-hcar-kaart-h);
  appearance: none; border: 0; padding: 0; cursor: pointer;
  background: color-mix(in srgb, var(--foreground) 5%, transparent);
}
.fp-hcar__kaart:focus-visible { outline: 2px solid var(--ring, var(--info)); outline-offset: 2px; }
/* De halve kaart toont het bovenste deel; het beeld staat iets boven het midden zodat een gezicht blijft. */
.fp-hcar__kaart-foto { width: 100%; height: 100%; object-fit: cover; object-position: 50% 26%; }
.fp-hcar__kaart-schaduw { position: absolute; inset: 0; background: var(--background); }

.fp-hcar__rail { position: absolute; left: var(--fp-hcar-pad); bottom: var(--fp-hcar-onder); width: var(--fp-hcar-rail); }
.fp-hcar__rail-cijfers { display: flex; justify-content: space-between; font-size: var(--fp-hcar-label); font-variant-numeric: tabular-nums; opacity: 0.8; }
.fp-hcar__rail-lijn { position: relative; margin-top: 0.5rem; height: 1px; width: 100%; background: color-mix(in srgb, var(--foreground) 25%, transparent); }
.fp-hcar__rail-marker { position: absolute; inset: 0 auto 0 0; width: calc(100% / var(--fp-hcar-n, 1)); background: var(--foreground); }

/* ── CoverflowCarousel ──────────────────────────────────────────────────── */

.fp-cover {
  --fp-cover-h: calc(var(--fp-cover-w) * 1.515);
  position: relative; overflow: hidden; user-select: none; outline: none;
  display: flex; align-items: center; justify-content: center;
  width: 100%; min-height: calc(var(--fp-cover-h) + 15rem); padding: 3rem 0;
  background: var(--background); color: var(--foreground);
}
.fp-cover:focus-visible { box-shadow: inset 0 0 0 2px var(--ring, var(--info)); }
.fp-cover__achter { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.fp-cover__achter-foto { width: 100%; height: 100%; object-fit: cover; filter: brightness(0.22) blur(32px); transform: scale(1.15); }
.fp-cover__achter-was { position: absolute; inset: 0; background: radial-gradient(circle at center, color-mix(in srgb, var(--background) 30%, transparent), color-mix(in srgb, var(--background) 92%, transparent)); }
.fp-cover__inhoud { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; width: 100%; max-width: 72rem; padding: 0 1rem; }
.fp-cover__eyebrow { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 2rem; }
.fp-cover__eyebrow-tekst { margin: 0; font: inherit; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.3em; text-transform: uppercase; color: var(--primary); }
.fp-cover__lijn { width: 2.25rem; height: 1px; background: linear-gradient(90deg, transparent, var(--primary)); }
.fp-cover__lijn--rechts { background: linear-gradient(90deg, var(--primary), transparent); }
.fp-cover__podium { position: relative; display: flex; align-items: center; justify-content: center; width: 100%; height: var(--fp-cover-h); margin-bottom: 2rem; perspective: 1400px; }
.fp-cover__kaart {
  position: absolute; overflow: hidden;
  width: var(--fp-cover-w); height: var(--fp-cover-h);
  border-radius: calc(var(--radius) * 2);
  background: var(--card); border: 1px solid color-mix(in srgb, var(--foreground) 12%, transparent);
  transform-origin: center center; cursor: pointer;
  box-shadow: 0 15px 35px color-mix(in srgb, var(--background) 50%, transparent);
  transition:
    transform var(--motion-smooth-duration) var(--motion-smooth),
    opacity var(--motion-smooth-duration) var(--motion-smooth),
    filter var(--motion-smooth-duration) var(--motion-smooth),
    box-shadow var(--motion-smooth-duration) var(--motion-smooth);
}
.fp-cover__kaart[data-positie="weg"] { transform: scale(0.4); opacity: 0; z-index: 0; filter: brightness(0.4) blur(2px); pointer-events: none; }
.fp-cover__kaart[data-positie="midden"] { transform: none; opacity: 1; z-index: 30; filter: none; cursor: default; box-shadow: 0 25px 60px color-mix(in srgb, var(--background) 90%, transparent), 0 0 35px color-mix(in srgb, var(--primary) 25%, transparent); }
.fp-cover__kaart[data-positie="r1"] { transform: translateX(calc(var(--fp-cover-w) * 0.86)) scale(0.84) rotateY(-24deg); opacity: 0.65; z-index: 20; filter: brightness(0.75); }
.fp-cover__kaart[data-positie="r2"] { transform: translateX(calc(var(--fp-cover-w) * 1.55)) scale(0.68) rotateY(-38deg); opacity: 0.38; z-index: 10; filter: brightness(0.55) blur(1px); }
.fp-cover__kaart[data-positie="l1"] { transform: translateX(calc(var(--fp-cover-w) * -0.86)) scale(0.84) rotateY(24deg); opacity: 0.65; z-index: 20; filter: brightness(0.75); }
.fp-cover__kaart[data-positie="l2"] { transform: translateX(calc(var(--fp-cover-w) * -1.55)) scale(0.68) rotateY(38deg); opacity: 0.38; z-index: 10; filter: brightness(0.55) blur(1px); }
.fp-cover__foto { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.fp-cover__vignet { position: absolute; inset: 0; pointer-events: none; z-index: 1; background: linear-gradient(180deg, color-mix(in srgb, var(--background) 40%, transparent) 0%, color-mix(in srgb, var(--background) 10%, transparent) 25%, color-mix(in srgb, var(--background) 68%, transparent) 60%, color-mix(in srgb, var(--background) 96%, transparent) 100%); }
.fp-cover__tekst {
  position: relative; z-index: 2; display: flex; flex-direction: column; justify-content: space-between;
  width: 100%; height: 100%; padding: 1.25rem 1.125rem 1.375rem; text-align: center;
  opacity: 0; transform: translateY(16px); pointer-events: none;
  transition: opacity var(--motion-smooth-duration) var(--motion-smooth), transform var(--motion-smooth-duration) var(--motion-smooth);
}
.fp-cover__kaart[data-positie="midden"] .fp-cover__tekst { opacity: 1; transform: none; pointer-events: auto; }
.fp-cover__tag { align-self: flex-end; font-size: 0.78rem; font-weight: 600; letter-spacing: 0.06em; text-shadow: 0 2px 6px color-mix(in srgb, var(--background) 80%, transparent); }
.fp-cover__onder { display: flex; flex-direction: column; align-items: center; gap: 0.1875rem; margin-top: auto; }
.fp-cover__titel { margin: 0; font: inherit; font-size: 1.65rem; font-weight: 900; text-transform: uppercase; letter-spacing: 0.04em; line-height: 1.1; text-shadow: 0 3px 12px color-mix(in srgb, var(--background) 95%, transparent); }
.fp-cover__sub { font-size: 1.1rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; line-height: 1.2; text-shadow: 0 3px 10px color-mix(in srgb, var(--background) 90%, transparent); }
.fp-cover__streep { width: 2.125rem; height: 2px; margin: 0.3125rem auto 0.25rem; border-radius: 999px; background: var(--primary); box-shadow: 0 0 8px color-mix(in srgb, var(--primary) 70%, transparent); }
.fp-cover__omschrijving { margin: 0 0 0.625rem; max-width: 17.5rem; font-size: 0.82rem; font-style: italic; line-height: 1.3; text-shadow: 0 2px 8px color-mix(in srgb, var(--background) 90%, transparent); }
.fp-cover__cta {
  display: inline-flex; align-items: center; gap: 0.375rem; padding: 0.4375rem 1.125rem;
  appearance: none; border: 0; cursor: pointer; text-decoration: none;
  font: inherit; font-size: 0.72rem; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--primary-foreground); background: linear-gradient(135deg, var(--primary), color-mix(in srgb, var(--primary) 80%, var(--background)));
  border-radius: 999px; box-shadow: 0 4px 14px color-mix(in srgb, var(--background) 40%, transparent), 0 0 15px color-mix(in srgb, var(--primary) 30%, transparent);
  transition: transform var(--motion-instant-duration) var(--motion-instant);
}
.fp-cover__cta:hover { transform: translateY(-1px); }
.fp-cover__cta[data-pressed] { transform: scale(0.97); }
.fp-cover__pijl {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 40;
  display: flex; align-items: center; justify-content: center; width: 2.875rem; height: 2.875rem;
  appearance: none; cursor: pointer; border-radius: 50%;
  color: var(--foreground); background: color-mix(in srgb, var(--background) 55%, transparent);
  border: 1px solid color-mix(in srgb, var(--foreground) 20%, transparent);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  box-shadow: var(--shadow-overlay);
  transition: background-color var(--motion-instant-duration) var(--motion-instant), transform var(--motion-instant-duration) var(--motion-instant);
}
.fp-cover__pijl--links { left: 1.5rem; }
.fp-cover__pijl--rechts { right: 1.5rem; }
.fp-cover__pijl:hover { background: color-mix(in srgb, var(--background) 75%, transparent); }
.fp-cover__pijl[data-pressed] { transform: translateY(-50%) scale(0.94); }
.fp-cover__pijl:focus-visible { outline: 2px solid var(--ring, var(--info)); outline-offset: 2px; }
.fp-cover__stippen { display: flex; align-items: center; justify-content: center; gap: 1.375rem; }
.fp-cover__stip {
  appearance: none; border: 0; cursor: pointer; padding: 0;
  width: 0.5rem; height: 0.5rem; border-radius: 999px;
  background: color-mix(in srgb, var(--foreground) 25%, transparent);
  transform-origin: center;
  transition: transform var(--motion-default-duration) var(--motion-default), background-color var(--motion-default-duration) var(--motion-default);
}
/* De actieve stip rekt uit via schaal — niet via breedte. */
.fp-cover__stip[aria-current] { background: var(--primary); transform: scaleX(3.5); box-shadow: 0 0 10px color-mix(in srgb, var(--primary) 70%, transparent); }
.fp-cover__stip:focus-visible { outline: 2px solid var(--ring, var(--info)); outline-offset: 3px; }