Templates/Ofen- und Kaminbau

import { useEffect, useRef, useState, type CSSProperties, type ReactNode } from "react";
import { motion, useInView, useReducedMotion, useScroll, useTransform } from "framer-motion";
import {
  ArrowRight,
  Facebook,
  Flame,
  Gauge,
  Instagram,
  Layers,
  Leaf,
  Mail,
  MapPin,
  Menu,
  Phone,
  ShieldCheck,
  Star,
  Thermometer,
  Wrench,
  X,
  Youtube,
} from "lucide-react";

/*
 * Terrafeu: a full page for a maker of heat-retaining stoves and fireplaces.
 *
 * The subject is fire, so the page is allowed one warm accent and nothing
 * else: terracotta on a warm off-white, with two bands in a light sand tone
 * and a near-black closing section. Photographs keep their evening light,
 * nothing is washed out, and no coloured film lies over anything.
 *
 * Two ideas carry the motion. The hero photograph drifts a little more slowly
 * than the page, and every block arrives once with a short lift. On phones
 * the two comparison cards stack while scrolling and the two strips become
 * sliders with a thin progress line.
 */

const GRUND = "#f9f7f1";
const KARTE = "#fefdf9";
const AKZENT = "#c1582f";
const SAND = "#f0e9dd";
const SAND_2 = "#f1ece3";
const LEHM = "#eedbc6";
const TON = "#c8875a";
const STAHL = "#484e54";
const TINTE = "#1e1814";
const LEISE = "#6b615a";
const KANTE = "#ded8cf";

const SANS = '"Albert Sans", ui-sans-serif, system-ui, sans-serif';
const anzeige: CSSProperties = { fontFamily: SANS, letterSpacing: "-0.01em" };

/** Grosszuegig gerundete Bildrahmen, kleine Radien an den Knoepfen. */
const BILD = 24;
const KNOPF = 8;

const MARKE = {
  name: "Terrafeu",
  claim: "Warmth that stays",
  gegruendet: 1974,
  firma: "Terrafeu Workshop",
  mail: "hello@terrafeu.example",
  telefon: "+41 44 123 45 67",
  telefonHref: "tel:+41441234567",
  region: "Switzerland and southern Germany",
};

const NAV = [
  { label: "Fireplaces", href: "#categories", Icon: Flame },
  { label: "Heat-retaining stoves", href: "#categories", Icon: Layers },
  { label: "Tiled stoves", href: "#categories", Icon: Thermometer },
  { label: "Hybrid stoves", href: "#categories", Icon: Gauge },
  { label: "How it works", href: "#how-it-works", Icon: Leaf },
];

const KATEGORIEN = [
  {
    name: "Fireplace",
    bild: "/templates/terrafeu/cat-cheminee.webp",
    alt: "Glass fronted fireplace in a living room",
    claim: "For atmosphere and relaxed hours by the fire.",
    anteil: "Heat contribution 0 to 20 %",
  },
  {
    name: "Heat-retaining stove",
    bild: "/templates/terrafeu/cat-speicherofen.webp",
    alt: "Heat-retaining stove with a stone surround",
    claim: "A real fire plus welcome additional warmth.",
    anteil: "Heat contribution 20 to 80 %",
  },
  {
    name: "Tiled stove",
    bild: "/templates/terrafeu/cat-kachelofen.webp",
    alt: "Tiled stove with a bench along one side",
    claim: "A real fire and cosy heat for the whole house.",
    anteil: "Heat contribution 70 to 100 %",
  },
  {
    name: "Hybrid stove",
    bild: "/templates/terrafeu/cat-kombiofen.webp",
    alt: "Hybrid stove in a holiday home",
    claim: "For cold holiday homes: fast warmth that also lasts.",
    anteil: "Warm quickly. Warm for long.",
  },
];

const GRUNDSAETZE = [
  {
    Icon: Flame,
    titel: "Calm radiant heat",
    text: "Natural radiant heat that warms bodies and rooms gently and evenly.",
  },
  {
    Icon: Leaf,
    titel: "Natural materials",
    text: "The stone is healthy to live with, low in emissions and fully recyclable.",
  },
  {
    Icon: ShieldCheck,
    titel: "Built to last",
    text: "A solid stone core made for generations, with a 15 year warranty.",
  },
  {
    Icon: Gauge,
    titel: "Efficient and economical",
    text: "Heat is stored and released slowly, using very little fuel.",
  },
  {
    Icon: Wrench,
    titel: "Low maintenance",
    text: "Simple to run, little upkeep and dependable in daily use.",
  },
];

const VERGLEICH = [
  {
    bild: "/templates/terrafeu/speicherstein.webp",
    alt: "A block of solid heat-retaining stone",
    label: "Stone",
    heraus: true,
    punkte: ["buffers and stores", "even warmth", "radiant heat", "steady room temperature"],
  },
  {
    bild: "/templates/terrafeu/stahl.webp",
    alt: "A steel firebox",
    label: "Steel",
    heraus: false,
    punkte: [
      "releases heat quickly",
      "high surface temperatures",
      "mostly warm air",
      "large swings in temperature",
    ],
  },
];

const ZAHLEN = [
  { bis: 1974, label: "Founded as a workshop", gruppe: false },
  { bis: 50000, suffix: "+", label: "Installations across Europe", gruppe: true },
  { bis: 15, suffix: " years", label: "Warranty on the stone core", gruppe: false },
];

const STIMMEN = [
  {
    text: "We are heating with the tiled stove for the second winter now. The whole house is still warm in the morning, without anyone getting up at night to add wood.",
    name: "Andrea Steiner",
    rolle: "Family home, new build",
    bild: "/templates/terrafeu/avatar-andrea.webp",
  },
  {
    text: "The advice was honest. They talked us out of the larger model because it would have been too much for our rooms.",
    name: "Marc Brunner",
    rolle: "Period house, renovation",
    bild: "/templates/terrafeu/avatar-marc.webp",
  },
  {
    text: "The difference to our old steel stove is easy to feel. The warmth is calmer and the air in the room stays pleasant.",
    name: "Sandra Koller",
    rolle: "Holiday home in the mountains",
    bild: "/templates/terrafeu/avatar-sandra.webp",
  },
];

const FUSS = [
  {
    titel: "Navigation",
    links: ["Fireplaces", "Heat-retaining stoves", "Tiled stoves", "Hybrid stoves", "About us"],
  },
  { titel: "Support", links: ["Downloads", "FAQ", "Care and tips", "Projects"] },
];

/* --------------------------------------------------------------- primitives */

function Reveal({
  children,
  delay = 0,
  className = "",
  style,
}: {
  children: ReactNode;
  delay?: number;
  className?: string;
  style?: CSSProperties;
}) {
  const reduce = useReducedMotion();
  const ref = useRef<HTMLDivElement>(null);
  const sichtbar = useInView(ref, { once: true, margin: "-70px" });
  return (
    <motion.div
      ref={ref}
      className={className}
      style={style}
      initial={reduce ? false : { opacity: 0, y: 24 }}
      animate={sichtbar || reduce ? { opacity: 1, y: 0 } : { opacity: 0, y: 24 }}
      transition={{
        duration: reduce ? 0 : 0.75,
        ease: [0.22, 1, 0.36, 1],
        delay: reduce ? 0 : delay / 1000,
      }}
    >
      {children}
    </motion.div>
  );
}

/** Die Marke: das Wort und eine Flamme mit einer zweiten Zunge an der Schulter. */
function Flamme({ className = "" }: { className?: string }) {
  return (
    <svg viewBox="0 0 24 24" aria-hidden className={className}>
      <path
        fill="currentColor"
        d="M12.8 1.5c.2 2.8 1.6 4.3 3 6 1.4 1.7 2.4 3.5 2.4 5.8 0 4-3 7.2-6.6 7.2-3.2 0-5.7-2.5-5.7-5.7 0-2.4 1.2-4.2 2.8-5.9-.1 1.3.2 2.3.9 3 .1-3.6 1.5-6.4 3.2-10.4z"
      />
      <path
        fill="currentColor"
        opacity="0.38"
        d="M12.2 12.4c1.5 1.6 2.3 2.9 2.3 4.3 0 1.6-1.2 2.8-2.7 2.8s-2.6-1.2-2.6-2.7c0-1.4.9-2.6 1.9-3.6-.1.7.1 1.2.4 1.5.1-.9.4-1.6.7-2.3z"
      />
    </svg>
  );
}

function Wortmarke({ hell = false, gross = false }: { hell?: boolean; gross?: boolean }) {
  return (
    <span className="block" style={{ color: hell ? "#fdfaf4" : TINTE }}>
      <span className="flex items-end gap-2">
        <span
          className={`uppercase ${gross ? "text-[2rem]" : "text-[1.5rem] sm:text-[1.7rem]"}`}
          style={{ fontFamily: SANS, fontWeight: 800, lineHeight: 0.85, letterSpacing: "0.02em" }}
        >
          {MARKE.name}
        </span>
        <Flamme className={`w-auto shrink-0 ${gross ? "h-8" : "h-6 sm:h-7"}`} />
      </span>
      <span
        className="mt-1.5 block text-[0.68rem]"
        style={{
          fontFamily: SANS,
          letterSpacing: "0.02em",
          color: hell ? "rgba(253,250,244,0.6)" : LEISE,
        }}
      >
        {MARKE.claim}
      </span>
    </span>
  );
}

/**
 * Der Knopf. Beim Anfahren wandert die Beschriftung nach oben hinaus und eine
 * zweite Fassung kommt von unten nach: zwei Lagen im selben Kasten, keine
 * Groessenaenderung.
 */
function Knopf({
  children,
  href,
  variante = "voll",
  className = "",
}: {
  children: ReactNode;
  href: string;
  variante?: "voll" | "glas" | "linie";
  className?: string;
}) {
  const stil: CSSProperties =
    variante === "voll"
      ? { background: AKZENT, color: "#fdfaf4", border: "1px solid transparent" }
      : variante === "glas"
        ? {
            background: "rgba(253,250,244,0.14)",
            color: "#fdfaf4",
            border: "1px solid rgba(253,250,244,0.24)",
            backdropFilter: "blur(8px)",
          }
        : { background: KARTE, color: TINTE, border: `1px solid ${KANTE}` };

  return (
    <a
      href={href}
      className={`group inline-flex items-center justify-center overflow-hidden text-center transition-colors ${className}`}
      style={{ ...stil, borderRadius: KNOPF, fontFamily: SANS, fontWeight: 500 }}
    >
      <span className="relative block overflow-hidden">
        <span className="flex items-center justify-center gap-2 transition-transform duration-[420ms] ease-out group-hover:-translate-y-full">
          {children}
        </span>
        <span
          aria-hidden
          className="absolute inset-0 flex translate-y-full items-center justify-center gap-2 transition-transform duration-[420ms] ease-out group-hover:translate-y-0"
        >
          {children}
        </span>
      </span>
    </a>
  );
}

function Kicker({ children }: { children: ReactNode }) {
  return (
    <p
      className="text-[0.9rem]"
      style={{ fontFamily: SANS, fontWeight: 600, letterSpacing: "0.005em", color: AKZENT }}
    >
      {children}
    </p>
  );
}

function Ueberschrift({ children, hell = false }: { children: ReactNode; hell?: boolean }) {
  return (
    <h2
      className="text-[1.75rem] leading-tight sm:text-4xl"
      style={{ ...anzeige, fontWeight: 600, color: hell ? "#fdfaf4" : TINTE }}
    >
      {children}
    </h2>
  );
}

/** Die duenne Linie unter einem Schieber, die beim Wischen mitfuellt. */
function Fortschritt({
  ziel,
  anzahl,
  dunkel = false,
  className = "",
}: {
  ziel: React.RefObject<HTMLDivElement | null>;
  anzahl: number;
  dunkel?: boolean;
  className?: string;
}) {
  const [wert, setWert] = useState(0);

  useEffect(() => {
    const el = ziel.current;
    if (!el) return;
    const messen = () => {
      const weg = el.scrollWidth - el.clientWidth;
      // Kein Ueberhang heisst: alles ist zu sehen, die Linie steht voll.
      setWert(weg <= 0 ? 1 : el.scrollLeft / weg);
    };
    messen();
    el.addEventListener("scroll", messen, { passive: true });
    window.addEventListener("resize", messen);
    return () => {
      el.removeEventListener("scroll", messen);
      window.removeEventListener("resize", messen);
    };
  }, [ziel, anzahl]);

  return (
    <div
      aria-hidden
      className={`h-px w-full ${className}`}
      style={{ background: dunkel ? "rgba(253,250,244,0.16)" : "rgba(30,24,20,0.12)" }}
    >
      <div
        className="h-px origin-left transition-transform duration-200 ease-out"
        style={{ background: AKZENT, transform: `scaleX(${Math.min(1, Math.max(0, wert))})` }}
      />
    </div>
  );
}

/** Zaehlt einmal hoch, sobald die Zahl im Bild steht. */
function Zaehler({
  bis,
  suffix = "",
  gruppe = false,
}: {
  bis: number;
  suffix?: string;
  gruppe?: boolean;
}) {
  const reduce = useReducedMotion();
  const ref = useRef<HTMLSpanElement>(null);
  const sichtbar = useInView(ref, { once: true, margin: "-60px" });
  const [wert, setWert] = useState(0);

  useEffect(() => {
    if (!sichtbar) return;
    if (reduce) {
      setWert(bis);
      return;
    }
    const dauer = 1500;
    const start = performance.now();
    let id = 0;
    const lauf = (jetzt: number) => {
      const t = Math.min(1, (jetzt - start) / dauer);
      setWert(Math.round(bis * (1 - Math.pow(1 - t, 3))));
      if (t < 1) id = requestAnimationFrame(lauf);
    };
    id = requestAnimationFrame(lauf);
    return () => cancelAnimationFrame(id);
  }, [sichtbar, reduce, bis]);

  return (
    <span ref={ref}>
      {gruppe ? wert.toLocaleString("en-US") : String(wert)}
      {suffix}
    </span>
  );
}

/* ------------------------------------------------------------------- header */

function Kopfzeile() {
  const [offen, setOffen] = useState(false);
  const [gescrollt, setGescrollt] = useState(false);

  useEffect(() => {
    const beim = () => setGescrollt(window.scrollY > 40);
    beim();
    window.addEventListener("scroll", beim, { passive: true });
    return () => window.removeEventListener("scroll", beim);
  }, []);

  useEffect(() => {
    if (!offen) return;
    const vorher = document.body.style.overflow;
    document.body.style.overflow = "hidden";
    return () => {
      document.body.style.overflow = vorher;
    };
  }, [offen]);

  const fest = gescrollt || offen;

  return (
    <>
      {/* Das Blatt liegt absichtlich neben der Kopfzeile und nicht darin: ein
          backdrop-filter macht das Element zum Bezugsrahmen, und fixed waere
          dann auf die Hoehe der Leiste beschnitten. */}
      {offen ? (
        <div
          className="fixed inset-0 z-40 flex flex-col overflow-y-auto pt-24 pb-10 lg:hidden"
          style={{ background: GRUND }}
        >
          <nav className="mx-auto flex w-full max-w-7xl flex-1 flex-col px-5 sm:px-6">
            {NAV.map((eintrag) => (
              <a
                key={eintrag.label}
                href={eintrag.href}
                onClick={() => setOffen(false)}
                className="flex items-center gap-4 py-4 text-[1.35rem] transition-colors"
                style={{ fontFamily: SANS, color: TINTE }}
              >
                <span
                  className="flex size-11 shrink-0 items-center justify-center rounded-full"
                  style={{ background: "rgba(240,233,221,0.7)", color: AKZENT }}
                >
                  <eintrag.Icon className="size-5" strokeWidth={1.6} />
                </span>
                {eintrag.label}
              </a>
            ))}

            <div className="mt-auto pt-10">
              <Knopf href="#contact" className="w-full px-6 py-4 text-[0.95rem]">
                Find a specialist
              </Knopf>
              <div
                className="mt-6 flex flex-col gap-3 text-[0.92rem]"
                style={{ fontFamily: SANS, color: LEISE }}
              >
                <a href={MARKE.telefonHref} className="flex items-center gap-3">
                  <Phone className="size-4 shrink-0" style={{ color: AKZENT }} strokeWidth={1.6} />
                  {MARKE.telefon}
                </a>
                <a href={`mailto:${MARKE.mail}`} className="flex items-center gap-3">
                  <Mail className="size-4 shrink-0" style={{ color: AKZENT }} strokeWidth={1.6} />
                  {MARKE.mail}
                </a>
              </div>
            </div>
          </nav>
        </div>
      ) : null}

      {/* Ueber dem Hero durchsichtig, ab der ersten Scroll-Bewegung hell. Am
          Schreibtisch steht sie von Anfang an hell: dort liegt die Leiste
          neben der Ueberschrift, nicht darauf. */}
      <header
        className={`fixed inset-x-0 top-0 z-50 transition-colors duration-500 lg:sticky lg:bg-[#f9f7f1] lg:backdrop-blur-md ${
          fest ? "bg-[#f9f7f1] backdrop-blur-md" : "bg-transparent"
        }`}
      >
        <div className="relative z-10 mx-auto grid max-w-7xl grid-cols-[minmax(0,1fr)_auto] items-center gap-4 px-5 py-4 sm:px-6 sm:py-5 lg:flex lg:justify-between lg:gap-8 lg:px-10">
          <a href="#top" aria-label="Back to the top" className="min-w-0 shrink-0">
            <span className={fest ? "" : "hidden lg:block"}>
              <Wortmarke />
            </span>
            {fest ? null : (
              <span className="lg:hidden">
                <Wortmarke hell />
              </span>
            )}
          </a>

          <nav className="hidden items-center gap-7 lg:flex">
            {NAV.map((eintrag) => (
              <a
                key={eintrag.label}
                href={eintrag.href}
                className="text-[0.95rem] transition-colors"
                style={{ fontFamily: SANS, color: LEISE }}
              >
                {eintrag.label}
              </a>
            ))}
          </nav>

          <Knopf
            href="#contact"
            className="hidden shrink-0 px-5 py-2.5 text-[0.92rem] whitespace-nowrap lg:inline-flex"
          >
            Find a specialist
          </Knopf>

          <button
            type="button"
            onClick={() => setOffen((v) => !v)}
            aria-expanded={offen}
            aria-label={offen ? "Close menu" : "Open menu"}
            className="flex size-11 shrink-0 items-center justify-center lg:hidden"
            style={{
              borderRadius: KNOPF,
              background: fest ? "rgba(30,24,20,0.05)" : "rgba(253,250,244,0.14)",
              border: fest ? `1px solid ${KANTE}` : "1px solid rgba(253,250,244,0.24)",
              color: fest ? TINTE : "#fdfaf4",
              backdropFilter: fest ? undefined : "blur(8px)",
            }}
          >
            {offen ? <X className="size-5" /> : <Menu className="size-5" />}
          </button>
        </div>
      </header>
    </>
  );
}

/* --------------------------------------------------------------------- hero */

function Held() {
  const reduce = useReducedMotion();
  const ref = useRef<HTMLElement>(null);
  const { scrollYProgress } = useScroll({ target: ref, offset: ["start start", "end start"] });
  // Das Bild laeuft langsamer als die Seite, der Text ein wenig schneller.
  const bildY = useTransform(scrollYProgress, [0, 1], ["0%", "12%"]);
  const textY = useTransform(scrollYProgress, [0, 1], ["0%", "-18%"]);

  return (
    <section id="top" ref={ref} className="relative isolate overflow-hidden">
      <motion.div
        className="absolute inset-x-0 -inset-y-[8%]"
        style={reduce ? undefined : { y: bildY }}
      >
        <picture>
          <source media="(max-width: 639px)" srcSet="/templates/terrafeu/hero-mobile-2.webp" />
          <img
            src="/templates/terrafeu/hero-wide-2.webp"
            alt="Glass fronted fireplace in a living room in evening light"
            loading="eager"
            decoding="async"
            className="size-full object-cover"
          />
        </picture>
      </motion.div>

      {/* Nur so viel Schleier, wie die weisse Schrift braucht, in der Farbe des
          Bildes statt in einer fremden. */}
      <div
        className="absolute inset-0"
        style={{
          background:
            "linear-gradient(to top, rgba(20,16,12,0.94) 0%, rgba(20,16,12,0.5) 36%, rgba(20,16,12,0.18) 72%)",
        }}
      />

      <motion.div
        className="relative mx-auto flex min-h-svh max-w-4xl flex-col items-center justify-end px-5 pt-28 pb-24 text-center sm:justify-center sm:px-6 sm:pt-32 sm:pb-40 lg:px-10"
        style={reduce ? undefined : { y: textY }}
      >
        <Reveal>
          <p
            className="inline-flex items-center gap-2.5 px-4 py-2 text-[0.85rem] backdrop-blur-md"
            style={{
              borderRadius: KNOPF,
              background: "rgba(253,250,244,0.14)",
              color: "rgba(253,250,244,0.92)",
              fontFamily: SANS,
            }}
          >
            <Flamme className="size-4 shrink-0" />
            Building heat-retaining stoves since {MARKE.gegruendet}
          </p>
        </Reveal>

        <Reveal delay={120}>
          <h1
            className="mt-9 max-w-4xl text-[clamp(3.25rem,15vw,5.5rem)] sm:mt-11 sm:text-[5.25rem] lg:text-[6.5rem]"
            style={{
              fontFamily: SANS,
              fontWeight: 500,
              lineHeight: 0.92,
              letterSpacing: "-0.04em",
              color: "#fdfaf4",
              textShadow: "0 1px 26px rgba(28,22,16,0.3), 0 0 64px rgba(28,22,16,0.22)",
            }}
          >
            <span className="block">Warmth</span>
            <span className="block" style={{ color: "rgba(253,250,244,0.75)" }}>
              that stays
            </span>
          </h1>
        </Reveal>

        <Reveal delay={240}>
          <p
            className="mx-auto mt-8 max-w-lg text-[1.1rem] leading-relaxed sm:mt-10 sm:max-w-xl sm:text-xl"
            style={{
              fontFamily: SANS,
              color: "rgba(253,250,244,0.86)",
              textShadow: "0 1px 22px rgba(28,22,16,0.34)",
            }}
          >
            A different principle for stoves and fireplaces. For a calm, comfortable fire in your
            home.
          </p>
        </Reveal>

        <Reveal delay={360}>
          <div className="mt-12 flex flex-col items-center gap-3.5 sm:mt-14 sm:flex-row sm:flex-wrap sm:justify-center sm:gap-4">
            <Knopf href="#categories" className="min-w-[16rem] px-8 py-4 text-[0.9rem] sm:min-w-0">
              Explore the range
              <ArrowRight className="size-4 shrink-0" strokeWidth={1.8} />
            </Knopf>
            <Knopf
              href="#how-it-works"
              variante="glas"
              className="min-w-[16rem] px-8 py-4 text-[0.9rem] sm:min-w-0"
            >
              How it works
            </Knopf>
          </div>
        </Reveal>
      </motion.div>
    </section>
  );
}

/* ------------------------------------------------------------- stein vs stahl */

function Prinzip() {
  return (
    <section
      id="how-it-works"
      className="mx-auto max-w-7xl scroll-mt-24 px-5 py-20 sm:px-6 sm:py-28 lg:scroll-mt-28 lg:px-10 lg:py-36"
    >
      <div className="grid gap-12 sm:gap-16 lg:grid-cols-[0.9fr_1.1fr] lg:gap-20">
        <div>
          <Reveal>
            <Kicker>The difference you can feel</Kicker>
          </Reveal>
          <Reveal delay={100}>
            <h2
              className="mt-4 text-[1.75rem] leading-tight sm:mt-5 sm:text-4xl"
              style={{ ...anzeige, fontWeight: 600, color: TINTE }}
            >
              Our stoves and fireplaces are built around a solid core of heat-retaining stone.
            </h2>
          </Reveal>
          <Reveal delay={200}>
            <p
              className="mt-6 text-base leading-relaxed sm:mt-7"
              style={{ fontFamily: SANS, color: LEISE }}
            >
              And not around a steel firebox. A different principle for a calm, comfortable home:
              the stone buffers, stores and releases the heat gently into the room over many hours.
            </p>
          </Reveal>
        </div>

        {/* Auf dem Telefon schieben sich die beiden Karten beim Scrollen
            uebereinander, ab sm stehen sie nebeneinander. */}
        <div className="flex flex-col gap-6 sm:grid sm:grid-cols-2 sm:gap-8">
          {VERGLEICH.map((karte, i) => (
            <div key={karte.label} className={`sticky sm:static ${i === 0 ? "top-24" : "top-32"}`}>
              <div
                className="group h-full overflow-hidden"
                style={{ borderRadius: BILD, background: karte.heraus ? LEHM : SAND_2 }}
              >
                <img
                  src={karte.bild}
                  alt={karte.alt}
                  loading="lazy"
                  className="aspect-[4/3] w-full object-cover transition-transform duration-[1400ms] ease-out group-hover:scale-105"
                />
                <div className="p-6 sm:p-7">
                  <h3
                    className="text-[0.95rem]"
                    style={{
                      fontFamily: SANS,
                      fontWeight: 600,
                      color: karte.heraus ? AKZENT : STAHL,
                    }}
                  >
                    {karte.label}
                  </h3>
                  <ul className="mt-5 space-y-3">
                    {karte.punkte.map((punkt) => (
                      <li
                        key={punkt}
                        className="flex items-start gap-3 text-sm leading-relaxed"
                        style={{ fontFamily: SANS, color: karte.heraus ? "#5c4a3d" : LEISE }}
                      >
                        <span
                          aria-hidden
                          className="mt-[0.55em] size-1.5 shrink-0 rounded-full"
                          style={{ background: karte.heraus ? AKZENT : STAHL }}
                        />
                        {punkt}
                      </li>
                    ))}
                  </ul>
                </div>
              </div>
            </div>
          ))}
        </div>
      </div>

      <ul className="mt-16 grid gap-8 sm:mt-28 sm:grid-cols-2 sm:gap-10 lg:grid-cols-5">
        {GRUNDSAETZE.map((satz, i) => (
          <li key={satz.titel}>
            <Reveal delay={i * 110} className="group">
              <satz.Icon
                className="size-7 transition-transform duration-500 group-hover:-translate-y-1"
                style={{ color: AKZENT }}
                strokeWidth={1.5}
              />
              <h3
                className="mt-5 text-[0.95rem]"
                style={{ fontFamily: SANS, fontWeight: 600, color: TINTE }}
              >
                {satz.titel}
              </h3>
              <p
                className="mt-3 text-sm leading-relaxed"
                style={{ fontFamily: SANS, color: LEISE }}
              >
                {satz.text}
              </p>
            </Reveal>
          </li>
        ))}
      </ul>
    </section>
  );
}

/* --------------------------------------------------------------- kategorien */

function Kategorien() {
  const streifen = useRef<HTMLDivElement>(null);

  return (
    <section
      id="categories"
      className="scroll-mt-24 py-20 sm:py-28 lg:scroll-mt-28 lg:py-36"
      style={{ background: SAND }}
    >
      <div className="mx-auto max-w-7xl px-5 sm:px-6 lg:px-10">
        <Reveal>
          <Kicker>One principle, four ways to use it</Kicker>
        </Reveal>
        <Reveal delay={100}>
          <h2
            className="mt-4 max-w-2xl text-[1.75rem] leading-tight sm:mt-5 sm:text-4xl"
            style={{ ...anzeige, fontWeight: 600, color: TINTE }}
          >
            What role should the fire play in your home?
          </h2>
        </Reveal>

        {/* Der Streifen kommt als Ganzes: einzelne Karten wuerden sonst
            waehrend des Wischens nacheinander erscheinen. */}
        <Reveal delay={150} className="mt-10 sm:mt-16">
          <div
            ref={streifen}
            className="-mx-5 flex snap-x snap-mandatory scroll-px-5 gap-4 overflow-x-auto px-5 pb-2 sm:mx-0 sm:grid sm:snap-none sm:grid-cols-2 sm:gap-8 sm:overflow-visible sm:px-0 lg:grid-cols-4 [&::-webkit-scrollbar]:hidden"
            style={{ scrollbarWidth: "none" }}
          >
            {KATEGORIEN.map((kat) => (
              <figure
                key={kat.name}
                className="group w-[76vw] shrink-0 snap-start sm:w-auto sm:shrink"
              >
                <div
                  className="relative overflow-hidden"
                  style={{ borderRadius: BILD, background: SAND_2 }}
                >
                  <img
                    src={kat.bild}
                    alt={kat.alt}
                    loading="lazy"
                    className="aspect-[4/5] w-full object-cover transition-transform duration-[1400ms] ease-out group-hover:scale-105"
                  />
                  {/* Der Waermeanteil steht auf dem Telefon immer da, am
                      Schreibtisch erst beim Anfahren. */}
                  <span
                    className="pointer-events-none absolute inset-x-3 bottom-3 px-3 py-2 text-center text-[0.8rem] backdrop-blur-sm transition-opacity duration-500 sm:opacity-0 sm:group-hover:opacity-100"
                    style={{
                      borderRadius: KNOPF,
                      background: "rgba(30,24,20,0.58)",
                      color: "#fdfaf4",
                      fontFamily: SANS,
                    }}
                  >
                    {kat.anteil}
                  </span>
                </div>
                <figcaption className="mt-5 sm:mt-6">
                  <h3
                    className="text-xl transition-colors duration-500 group-hover:text-[#c1582f]"
                    style={{
                      fontFamily: SANS,
                      fontWeight: 600,
                      letterSpacing: "-0.015em",
                      color: TINTE,
                    }}
                  >
                    {kat.name}
                  </h3>
                  <p
                    className="mt-3 text-sm leading-relaxed"
                    style={{ fontFamily: SANS, color: LEISE }}
                  >
                    {kat.claim}
                  </p>
                </figcaption>
              </figure>
            ))}
          </div>

          <Fortschritt ziel={streifen} anzahl={KATEGORIEN.length} className="mt-6 sm:hidden" />
        </Reveal>
      </div>
    </section>
  );
}

/* ----------------------------------------------------------------- pionier */

function Geschichte() {
  return (
    <section className="mx-auto max-w-7xl px-5 py-20 sm:px-6 sm:py-28 lg:px-10 lg:py-36">
      <div className="grid items-center gap-12 sm:gap-16 lg:grid-cols-2 lg:gap-24">
        <Reveal>
          <div className="group overflow-hidden" style={{ borderRadius: BILD, background: SAND_2 }}>
            <img
              src="/templates/terrafeu/story.webp"
              alt="Couple by the fire of a heat-retaining stove in evening light"
              loading="lazy"
              className="aspect-[4/3] w-full object-cover transition-transform duration-[1400ms] ease-out group-hover:scale-105 lg:aspect-[7/5]"
            />
          </div>
        </Reveal>
        <div>
          <Reveal delay={120}>
            <Kicker>Craft by conviction. Since {MARKE.gegruendet}.</Kicker>
          </Reveal>
          <Reveal delay={200}>
            <h2
              className="mt-4 text-[1.75rem] leading-tight sm:mt-5 sm:text-4xl"
              style={{ ...anzeige, fontWeight: 600, color: TINTE }}
            >
              Half a century of experience with stored heat.
            </h2>
          </Reveal>
          <Reveal delay={280}>
            <p
              className="mt-6 text-base leading-relaxed sm:mt-7"
              style={{ fontFamily: SANS, color: LEISE }}
            >
              Since {MARKE.gegruendet} we have been designing and building stoves and fireplaces
              around a solid stone core. More than 50,000 installations across Europe are the best
              proof of that experience.
            </p>
          </Reveal>
          <dl className="mt-10 grid grid-cols-3 gap-5 sm:mt-14 sm:gap-10">
            {ZAHLEN.map((zahl, i) => (
              <Reveal key={zahl.label} delay={380 + i * 120}>
                <dt
                  className="text-2xl sm:text-3xl"
                  style={{ fontFamily: SANS, fontWeight: 600, color: AKZENT }}
                >
                  <Zaehler bis={zahl.bis} suffix={zahl.suffix} gruppe={zahl.gruppe} />
                </dt>
                <dd
                  className="mt-2 text-[0.8rem] leading-relaxed"
                  style={{ fontFamily: SANS, color: LEISE }}
                >
                  {zahl.label}
                </dd>
              </Reveal>
            ))}
          </dl>
        </div>
      </div>
    </section>
  );
}

/* ----------------------------------------------------------------- stimmen */

function Stimmen() {
  const streifen = useRef<HTMLDivElement>(null);

  return (
    <section
      className="overflow-hidden px-5 py-20 sm:px-6 sm:py-28 lg:px-10 lg:py-36"
      style={{ background: TINTE, color: "#fdfaf4" }}
    >
      <div className="mx-auto max-w-7xl">
        <div className="flex flex-col items-center gap-3 text-center">
          <Kicker>What our customers say</Kicker>
          <Ueberschrift hell>From people who already sit by the fire.</Ueberschrift>
          <p
            className="max-w-md text-sm leading-relaxed sm:text-base"
            style={{ fontFamily: SANS, color: "rgba(253,250,244,0.66)" }}
          >
            Three notes from homes with one of our stoves in them.
          </p>
        </div>

        <div
          ref={streifen}
          className="-mx-5 mt-12 flex snap-x snap-mandatory scroll-px-5 gap-4 overflow-x-auto px-5 pb-2 sm:mx-0 sm:mt-16 sm:grid sm:snap-none sm:grid-cols-3 sm:gap-6 sm:overflow-visible sm:px-0 [&::-webkit-scrollbar]:hidden"
          style={{ scrollbarWidth: "none" }}
        >
          {STIMMEN.map((stimme) => (
            <figure
              key={stimme.name}
              className="flex w-[82vw] shrink-0 snap-start flex-col p-7 sm:w-auto sm:shrink sm:p-8"
              style={{ borderRadius: BILD, background: GRUND, color: TINTE }}
            >
              <span className="flex gap-0.5" aria-hidden style={{ color: TON }}>
                {Array.from({ length: 5 }).map((_, i) => (
                  <Star key={i} className="size-[0.95rem]" fill="currentColor" strokeWidth={0} />
                ))}
              </span>

              <blockquote
                className="mt-5 grow text-[0.95rem] leading-relaxed"
                style={{ fontFamily: SANS, color: LEISE }}
              >
                {stimme.text}
              </blockquote>

              <figcaption className="mt-7 flex items-center gap-3.5">
                <img
                  src={stimme.bild}
                  alt=""
                  aria-hidden
                  loading="lazy"
                  className="size-12 shrink-0 rounded-full object-cover"
                />
                <span className="min-w-0">
                  <span
                    className="block text-[0.95rem]"
                    style={{ fontFamily: SANS, fontWeight: 600, color: TINTE }}
                  >
                    {stimme.name}
                  </span>
                  <span
                    className="mt-0.5 block text-[0.8rem]"
                    style={{ fontFamily: SANS, color: LEISE }}
                  >
                    {stimme.rolle}
                  </span>
                </span>
              </figcaption>
            </figure>
          ))}
        </div>

        <Fortschritt ziel={streifen} anzahl={STIMMEN.length} dunkel className="mt-6 sm:hidden" />
      </div>
    </section>
  );
}

/* ----------------------------------------------------------------- kontakt */

const FELD: CSSProperties = {
  marginTop: 8,
  width: "100%",
  borderRadius: KNOPF,
  border: `1px solid ${KANTE}`,
  background: KARTE,
  padding: "0.7rem 0.9rem",
  fontSize: "0.95rem",
  fontFamily: SANS,
  color: TINTE,
};

function Kontakt() {
  const [gesendet, setGesendet] = useState(false);

  return (
    <section id="contact" className="scroll-mt-24 lg:scroll-mt-28" style={{ background: SAND }}>
      <div className="mx-auto grid max-w-7xl gap-10 px-5 py-20 sm:gap-14 sm:px-6 sm:py-28 lg:grid-cols-2 lg:items-center lg:px-10 lg:py-36">
        <div>
          <Reveal>
            <Kicker>Find a specialist</Kicker>
          </Reveal>
          <Reveal delay={100}>
            <h2
              className="mt-4 text-[1.75rem] leading-tight sm:mt-5 sm:text-4xl"
              style={{ ...anzeige, fontWeight: 600, color: TINTE }}
            >
              Tell us about your project.
            </h2>
          </Reveal>
          <Reveal delay={200}>
            <p
              className="mt-6 max-w-lg text-base leading-relaxed sm:mt-7"
              style={{ fontFamily: SANS, color: LEISE }}
            >
              Selected partner workshops advise you in person and near you, with no obligation. From
              the first idea to the finished stove.
            </p>
          </Reveal>
          <Reveal delay={300}>
            <ul className="mt-8 space-y-3.5 sm:mt-10" style={{ fontFamily: SANS }}>
              <li>
                <a
                  href={MARKE.telefonHref}
                  className="flex items-center gap-3 text-[0.95rem] transition-colors"
                  style={{ color: TINTE }}
                >
                  <Phone
                    className="size-[1.15rem] shrink-0"
                    style={{ color: AKZENT }}
                    strokeWidth={1.6}
                  />
                  {MARKE.telefon}
                </a>
              </li>
              <li>
                <a
                  href={`mailto:${MARKE.mail}`}
                  className="flex items-center gap-3 text-[0.95rem] transition-colors"
                  style={{ color: TINTE }}
                >
                  <Mail
                    className="size-[1.15rem] shrink-0"
                    style={{ color: AKZENT }}
                    strokeWidth={1.6}
                  />
                  {MARKE.mail}
                </a>
              </li>
              <li className="flex items-center gap-3 text-[0.95rem]" style={{ color: LEISE }}>
                <MapPin
                  className="size-[1.15rem] shrink-0"
                  style={{ color: AKZENT }}
                  strokeWidth={1.6}
                />
                Partner workshops in {MARKE.region}
              </li>
            </ul>
          </Reveal>
        </div>

        <Reveal delay={260}>
          <form
            onSubmit={(e) => {
              e.preventDefault();
              setGesendet(true);
            }}
            className="p-6 sm:p-8"
            style={{ borderRadius: BILD, background: GRUND }}
          >
            <div className="grid gap-4 sm:grid-cols-2 sm:gap-5">
              <div>
                <label className="text-[0.82rem]" style={{ fontFamily: SANS, color: LEISE }}>
                  Name
                  <input name="name" type="text" placeholder="Jane Doe" style={FELD} />
                </label>
              </div>
              <div>
                <label className="text-[0.82rem]" style={{ fontFamily: SANS, color: LEISE }}>
                  Email
                  <input
                    name="email"
                    type="email"
                    placeholder="jane.doe@example.com"
                    style={FELD}
                  />
                </label>
              </div>
              <div className="sm:col-span-2">
                <label className="text-[0.82rem]" style={{ fontFamily: SANS, color: LEISE }}>
                  Your project
                  <textarea
                    name="message"
                    rows={4}
                    placeholder="Floor area, the role the fire should play, new build or renovation, timeline"
                    style={{ ...FELD, resize: "none" }}
                  />
                </label>
                <p className="mt-2 text-[0.78rem]" style={{ fontFamily: SANS, color: LEISE }}>
                  The more we know, the better our recommendation will fit.
                </p>
              </div>
            </div>

            <div className="mt-6 flex flex-col gap-3 sm:flex-row sm:items-center sm:gap-5">
              <button
                type="submit"
                className="group inline-flex w-full items-center justify-center overflow-hidden px-7 py-3.5 text-[0.95rem] sm:w-auto"
                style={{
                  borderRadius: KNOPF,
                  background: AKZENT,
                  color: "#fdfaf4",
                  fontFamily: SANS,
                  fontWeight: 500,
                }}
              >
                {gesendet ? "Thank you" : "Send enquiry"}
              </button>
              <p className="text-[0.78rem]" style={{ fontFamily: SANS, color: LEISE }}>
                We usually reply within two working days.
              </p>
            </div>
          </form>
        </Reveal>
      </div>
    </section>
  );
}

/* --------------------------------------------------------------- fusszeile */

function Fusszeile() {
  return (
    <footer style={{ background: TINTE, color: "#fdfaf4" }}>
      <div className="mx-auto grid max-w-7xl gap-10 px-5 py-16 sm:grid-cols-2 sm:gap-12 sm:px-6 lg:grid-cols-4 lg:gap-14 lg:px-10 lg:py-20">
        <div className="sm:col-span-2 lg:col-span-1">
          <a href="#top" aria-label="Back to the top" className="group inline-block">
            <Wortmarke hell gross />
          </a>
          <p
            className="mt-6 max-w-xs text-sm leading-relaxed"
            style={{ fontFamily: SANS, color: "rgba(253,250,244,0.7)" }}
          >
            Stone instead of steel. For a calm, comfortable fire at home. Since {MARKE.gegruendet}.
          </p>
        </div>

        {FUSS.map((spalte) => (
          <div key={spalte.titel}>
            <h3
              className="text-[0.9rem]"
              style={{ fontFamily: SANS, fontWeight: 600, color: "rgba(253,250,244,0.5)" }}
            >
              {spalte.titel}
            </h3>
            <ul className="mt-5 space-y-3">
              {spalte.links.map((link) => (
                <li key={link}>
                  <a
                    href="#categories"
                    className="text-sm transition-colors hover:text-[#fdfaf4]"
                    style={{ fontFamily: SANS, color: "rgba(253,250,244,0.7)" }}
                  >
                    {link}
                  </a>
                </li>
              ))}
            </ul>
          </div>
        ))}

        <div>
          <h3
            className="text-[0.9rem]"
            style={{ fontFamily: SANS, fontWeight: 600, color: "rgba(253,250,244,0.5)" }}
          >
            Contact
          </h3>
          <ul
            className="mt-5 space-y-3 text-sm"
            style={{ fontFamily: SANS, color: "rgba(253,250,244,0.7)" }}
          >
            <li className="flex items-center gap-2">
              <Phone className="size-4 shrink-0" strokeWidth={1.6} /> {MARKE.telefon}
            </li>
            <li className="flex items-center gap-2">
              <Mail className="size-4 shrink-0" strokeWidth={1.6} /> {MARKE.mail}
            </li>
            <li className="flex items-center gap-2">
              <MapPin className="size-4 shrink-0" strokeWidth={1.6} /> {MARKE.region}
            </li>
            <li className="mt-4 flex gap-4" style={{ color: "rgba(253,250,244,0.6)" }}>
              <Instagram className="size-4" strokeWidth={1.6} />
              <Facebook className="size-4" strokeWidth={1.6} />
              <Youtube className="size-4" strokeWidth={1.6} />
            </li>
          </ul>
        </div>
      </div>

      <div style={{ background: "rgba(253,250,244,0.05)" }}>
        <div
          className="mx-auto flex max-w-7xl flex-col gap-3 px-5 py-6 text-xs leading-relaxed sm:flex-row sm:items-center sm:justify-between sm:px-6 sm:py-7 lg:px-10"
          style={{ fontFamily: SANS, color: "rgba(253,250,244,0.55)" }}
        >
          <span>© 2026 {MARKE.firma} · Imprint · Privacy · Terms</span>
          <span>All figures and contact details are placeholders.</span>
        </div>
      </div>
    </footer>
  );
}

/* --------------------------------------------------------------------- page */

export function TerrafeuStovesPage() {
  return (
    <div style={{ background: GRUND, color: "#29231d", fontFamily: SANS }}>
      <Kopfzeile />
      <main>
        <Held />
        <Prinzip />
        <Kategorien />
        <Geschichte />
        <Stimmen />
        <Kontakt />
      </main>
      <Fusszeile />
    </div>
  );
}

export default TerrafeuStovesPage;