/* Josef Küpper, Aachen — Heizungsbau für Holzbrennstoffe und Solar.
   Von Hand gebaut (nicht gestanzt). Richtung: erneuerbare Wärme —
   warme Naturtöne, Holzbraun, tiefes Grün, Glut als einziger Signalton.
   Keine Öko-Klischees, keine Blätter-Symbolik. */

@font-face {
  font-family: "Fraunces";
  src: url("display.woff2") format("woff2");
  font-weight: 500 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "InstrumentSans";
  src: url("body.woff2") format("woff2");
  font-weight: 400 600;
  font-style: normal;
  font-display: swap;
}

:root {
  color-scheme: light;
  --cream: #f6f1e6;
  --cream-2: #fffcf5;
  --line: #e2d9c6;
  --ink: #221f19;
  --muted: #6a6152;
  --green: #14392c;
  --green-2: #1b4c39;
  --green-line: #2d6b52;
  --green-soft: #e6ece3;
  --ember: #b4611f;
  --ember-2: #d3873a;
  --wood: #a9743f;
  --display: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "InstrumentSans", "Helvetica Neue", Arial, system-ui, sans-serif;
  --wrap: 1140px;
  --r: 18px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; overflow-x: hidden; }
body {
  background: var(--cream);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--display); font-weight: 600; line-height: 1.08; letter-spacing: -0.015em; }
p, li, h1, h2, h3 { overflow-wrap: break-word; hyphens: auto; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.section { padding: 92px 0; }

/* ── Demo-Banner (bei go_live entfernen) ── */
.demo-banner {
  background: var(--green);
  color: #e7ddc9;
  font-size: 13px;
  letter-spacing: 0.02em;
  text-align: center;
  padding: 9px 16px;
}

/* ── Kopf ── */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(246, 241, 230, 0.92);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; gap: 22px; height: 70px; }
.brand {
  font-family: var(--display); font-weight: 600; font-size: 21px;
  letter-spacing: -0.02em; text-decoration: none; white-space: nowrap;
}
.brand .dot { color: var(--ember); }
.main-nav { margin-left: auto; display: flex; gap: 24px; }
.main-nav a {
  text-decoration: none; font-size: 15px; color: var(--muted);
  padding-bottom: 2px; border-bottom: 1.5px solid transparent;
}
.main-nav a:hover { color: var(--green); border-bottom-color: var(--ember); }

/* ── Knöpfe ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: var(--sans); font-size: 16px; font-weight: 600;
  padding: 15px 24px; border-radius: 999px; text-decoration: none;
  border: 1.5px solid transparent; transition: transform .18s ease, background .18s ease, box-shadow .18s ease;
}
.btn .ic { width: 19px; height: 19px; flex: 0 0 auto; }
.btn-primary { background: var(--ember); color: #fff9f1; box-shadow: 0 8px 22px rgba(180, 97, 31, .22); }
.btn-primary:hover { background: #9d541a; transform: translateY(-2px); }
.btn-ghost { border-color: var(--green); color: var(--green); }
.btn-ghost:hover { background: var(--green); color: var(--cream-2); transform: translateY(-2px); }
.btn-small { padding: 11px 18px; font-size: 15px; }
.btn-light { background: var(--cream-2); color: var(--green); }
.btn-light:hover { background: #fff; transform: translateY(-2px); }

/* ── Hero ── */
.hero { padding: 66px 0 84px; }
.hero-grid { display: grid; grid-template-columns: 1.02fr 0.98fr; gap: 56px; align-items: center; }
.kicker {
  font-size: 13px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ember); margin-bottom: 20px;
}
h1 { font-size: clamp(40px, 6vw, 68px); margin-bottom: 22px; }
h1 .zeile2 { display: block; color: var(--green); font-size: .46em; letter-spacing: -0.005em; margin-top: 16px; }
.hero-sub { font-size: 19px; color: var(--muted); max-width: 30em; margin-bottom: 30px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 26px; }
.hero-meta {
  display: flex; flex-wrap: wrap; gap: 10px 18px; font-size: 14.5px; color: var(--muted);
  border-top: 1px solid var(--line); padding-top: 18px;
}
.hero-meta strong { color: var(--ink); font-weight: 600; }

/* Signature: Bildrahmen mit versetztem Grünblock und Glut-Ringen dahinter */
.hero-figur { position: relative; }
.glutringe {
  position: absolute; width: 118%; left: -9%; top: 50%; transform: translateY(-50%);
  z-index: 0; pointer-events: none; opacity: .5;
}
.rahmen {
  position: relative; z-index: 1;
  border-radius: var(--r); overflow: hidden;
  box-shadow: 0 26px 60px rgba(34, 31, 25, .18);
}
.rahmen img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.hero-figur::before {
  content: ""; position: absolute; z-index: 0;
  left: -16px; bottom: -16px; right: 16px; top: 16px;
  background: var(--green); border-radius: var(--r);
}
.bildnote {
  position: absolute; z-index: 2; right: 12px; bottom: 12px;
  background: rgba(20, 57, 44, .82); color: #e7ddc9;
  font-size: 11.5px; letter-spacing: 0.04em; padding: 5px 10px; border-radius: 999px;
}

/* ── Abschnittskopf ── */
.kopf { max-width: 46rem; margin-bottom: 48px; }
.eyebrow {
  font-size: 12.5px; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--wood); margin-bottom: 14px;
}
h2 { font-size: clamp(30px, 3.9vw, 46px); margin-bottom: 16px; }
.kopf p { color: var(--muted); font-size: 18px; }

/* ── Die vier Felder (Wow-Moment): vier gleichwertige Tafeln auf tiefem Grün ── */
.felder { background: var(--green); color: #f0e8d8; }
.felder .eyebrow { color: var(--ember-2); }
.felder h2 { color: #fdf8ee; }
.felder .kopf p { color: #bfd0c4; }
.feld-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.feld {
  background: var(--green-2);
  border: 1px solid var(--green-line);
  border-radius: var(--r);
  padding: 32px 30px 34px;
  display: flex; flex-direction: column;
  transition: transform .2s ease, border-color .2s ease;
}
.feld:hover { transform: translateY(-3px); border-color: var(--ember-2); }
.feld-oben { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; }
.feld-nr {
  font-family: var(--display); font-size: 15px; font-weight: 600;
  letter-spacing: 0.1em; color: var(--ember-2);
}
.marke { width: 54px; height: 54px; color: var(--ember-2); }
.feld h3 { font-size: 25px; color: #fdf8ee; margin-bottom: 12px; }
.feld p { color: #c3d3c7; font-size: 16px; }
.feld-fuss {
  margin-top: auto; padding-top: 16px; border-top: 1px solid rgba(240, 232, 216, .16);
  font-size: 13.5px; letter-spacing: 0.05em; text-transform: uppercase; color: #8fae9c;
}
.felder-cta { margin-top: 40px; display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.felder-cta span { color: #bfd0c4; font-size: 16px; }

/* ── Bilderband ── */
.bilder-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.bild { position: relative; border-radius: var(--r); overflow: hidden; background: var(--green-soft); }
.bild img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.bild figcaption {
  position: absolute; left: 12px; bottom: 12px;
  background: rgba(20, 57, 44, .82); color: #e7ddc9;
  font-size: 11.5px; letter-spacing: 0.04em; padding: 5px 10px; border-radius: 999px;
}

/* ── Betrieb + Stammdaten ── */
.betrieb-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items: start; }
.betrieb p + p { margin-top: 16px; }
.betrieb p { color: var(--muted); font-size: 18px; }
.karte {
  background: var(--cream-2); border: 1px solid var(--line); border-radius: var(--r);
  padding: 30px 28px;
}
.karte h3 { font-size: 22px; margin-bottom: 20px; }
.daten { list-style: none; }
.daten li { display: flex; gap: 14px; padding: 12px 0; border-top: 1px solid var(--line); font-size: 16px; }
.daten li:first-child { border-top: 0; padding-top: 0; }
.daten .label { flex: 0 0 88px; color: var(--muted); font-size: 14.5px; padding-top: 1px; }
.daten a { color: var(--green); font-weight: 600; text-decoration: none; border-bottom: 1.5px solid var(--ember); }
a[href^="mailto:"] { hyphens: none; overflow-wrap: anywhere; }
.daten a:hover { color: var(--ember); }
.sterne { color: var(--ember); letter-spacing: 0.08em; }
.merker {
  margin-top: 26px; display: inline-flex; align-items: center; gap: 10px;
  background: var(--green-soft); color: var(--green); border-radius: 999px;
  padding: 9px 16px; font-size: 14.5px; font-weight: 600;
}
.merker svg { width: 17px; height: 17px; }

/* ── Kontakt (zweiter Wow-Moment: die Nummer als Fläche) ── */
.kontakt-karte {
  background: var(--green); color: #f0e8d8; border-radius: 26px;
  padding: 58px 48px; text-align: center;
  background-image: radial-gradient(120% 90% at 50% -20%, rgba(211, 135, 58, .28), transparent 62%);
}
.kontakt-karte .eyebrow { color: var(--ember-2); }
.kontakt-karte h2 { color: #fdf8ee; }
.kontakt-karte > p { color: #bfd0c4; max-width: 34rem; margin: 0 auto 30px; }
.nummer {
  display: inline-block; font-family: var(--display); font-weight: 600;
  font-size: clamp(34px, 7.4vw, 74px); line-height: 1.05; letter-spacing: -0.02em;
  color: #fdf8ee; text-decoration: none; border-bottom: 3px solid var(--ember-2);
  padding-bottom: 6px; transition: color .2s ease;
}
.nummer:hover { color: var(--ember-2); }
.kontakt-zeile {
  margin-top: 40px; display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 26px;
  font-size: 16px; color: #bfd0c4;
}
.kontakt-zeile a { color: #f0e8d8; text-decoration: none; border-bottom: 1.5px solid var(--green-line); }
.kontakt-zeile a:hover { border-bottom-color: var(--ember-2); }

/* ── Fuß ── */
.site-footer { border-top: 1px solid var(--line); padding: 30px 0 96px; font-size: 14.5px; color: var(--muted); }
.footer-row { display: flex; flex-wrap: wrap; gap: 10px 26px; align-items: center; }
.footer-row a { color: var(--muted); }
.made-by { margin-left: auto; }
.made-by a { color: var(--green); text-decoration: none; border-bottom: 1px solid var(--line); }

/* ── Mobiler Anruf-Knopf ── */
.sticky-call {
  display: none; position: fixed; z-index: 70; left: 14px; right: 14px; bottom: 14px;
  align-items: center; justify-content: center; gap: 10px;
  background: var(--ember); color: #fff9f1; text-decoration: none;
  font-size: 17px; font-weight: 600; padding: 16px; border-radius: 999px;
  box-shadow: 0 12px 30px rgba(34, 31, 25, .28);
}
.sticky-call .ic { width: 20px; height: 20px; }

/* ── Sanftes Einblenden ── */
.js .reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.in { opacity: 1; transform: none; }

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .betrieb-grid { grid-template-columns: 1fr; gap: 36px; }
  .main-nav { display: none; }
  .section { padding: 72px 0; }
  .bilder-grid { grid-template-columns: 1fr 1fr; }
  .bilder-grid .bild:last-child { grid-column: 1 / -1; }
}
@media (max-width: 700px) {
  body { font-size: 16.5px; }
  .hero { padding: 44px 0 60px; }
  .feld-grid { grid-template-columns: 1fr; }
  .bilder-grid { grid-template-columns: 1fr; }
  .bilder-grid .bild:last-child { grid-column: auto; }
  .kontakt-karte { padding: 40px 22px; border-radius: 20px; }
  .feld { padding: 26px 22px 28px; }
  .karte { padding: 26px 22px; }
  .daten li { flex-direction: column; gap: 3px; }
  .daten .label { flex: none; }
  .sticky-call { display: flex; }
  .site-footer { padding-bottom: 104px; }
  .made-by { margin-left: 0; }
  .cta-row .btn { flex: 1 1 100%; }
  .hero-figur::before { left: -9px; bottom: -9px; right: 9px; top: 9px; }
  .glutringe { width: 104%; left: -2%; }
  .section { padding: 60px 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .feld { transition: none; }
}

/* ── Rechtsseiten ── */
.narrow { max-width: 42rem; }
.narrow h1 { font-size: clamp(32px, 5vw, 44px); margin-bottom: 24px; }
.narrow p { margin-bottom: 14px; color: var(--muted); }
.narrow p strong { color: var(--ink); }
.narrow a { color: var(--green); }