/* ===================================================================
   ★ MERKSATZ — FARBEN SIND DAS A UND O ★
   Eine Seite lebt vom FARB-ZUSAMMENSPIEL aus 2–3 abgestimmten Farben.
   Hintergrund eher DUNKEL  →  wirkt deutlich edler / premium.
   Hier: Nachtblau (--ink) + Kupfer (--copper) + Porzellan (--porcelain).
   Diese Regel bei JEDER Seite ZUERST beachten.  (Hamada)
   =================================================================== */

/* ---------- Lokale Schriften (DSGVO - self-hosted) ---------- */
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/* ============================================================
   Krüger Haustechnik GbR — Gas · Wasser · Heizung
   Design-System "Nachtblau & Kupfer"
   ============================================================ */

:root {
  /* Farbe */
  --ink: #0e1a24; /* Nachtblau-Anthrazit — Basis */
  --ink-2: #0a131b; /* tiefer */
  --ink-3: #16242f; /* Karten/Erhebung */
  --line: #25333e; /* Hairlines auf dunkel */
  --copper: #c77b43; /* Kupfer — EINZIGER Akzent */
  --copper-2: #e0a05e; /* helleres Kupfer (Hover/Glow) */
  --copper-ink: #3a2415; /* Kupfer-Schatten */
  --porcelain: #f2eee7; /* warmes Off-White */
  --porcelain-2: #e7e0d4;
  --paper: #fbf9f5; /* hellste Fläche */

  /* Text */
  --t-on-dark: #ede7dc;
  --t-on-dark-2: #a9b4bd; /* gedämpft auf dunkel */
  --t-on-light: #16242f;
  --t-on-light-2: #56636c;

  /* Typo */
  --font-display: "Archivo Expanded", "Archivo", system-ui, sans-serif;
  --font-body:
    "Archivo", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;

  /* Motion */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --dur: 0.7s;

  /* Maße */
  --container: 1240px;
  --radius: 14px;
  --radius-lg: 22px;
}

/* ---------- Base ---------- */
* {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}
body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--ink);
  color: var(--t-on-dark);
  font-size: 17px;
  line-height: 1.65;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img,
video {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.01em;
  margin: 0;
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(20px, 5vw, 56px);
}
.section {
  padding-block: clamp(72px, 11vw, 150px);
  position: relative;
}
.section--tight {
  padding-block: clamp(48px, 7vw, 88px);
}

.bg-ink {
  background: var(--ink);
  color: var(--t-on-dark);
}
.bg-ink-2 {
  background: var(--ink-2);
  color: var(--t-on-dark);
}
.bg-light {
  background: var(--porcelain);
  color: var(--t-on-light);
}
.bg-paper {
  background: var(--paper);
  color: var(--t-on-light);
}

/* ---------- Signatur: Eyebrow + Kupfer-Haarlinie ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--copper);
}
.eyebrow::before {
  content: "";
  width: 30px;
  height: 1px;
  background: var(--copper);
  opacity: 0.8;
}
.eyebrow--center::after {
  content: "";
  width: 30px;
  height: 1px;
  background: var(--copper);
  opacity: 0.8;
}
.hairline {
  height: 1px;
  background: var(--line);
  border: 0;
}
.on-light .eyebrow {
  color: var(--copper-ink);
}
.on-light .eyebrow::before,
.on-light .eyebrow--center::after {
  background: var(--copper);
  opacity: 1;
}

/* ---------- Typo-Skala ---------- */
.display {
  font-size: clamp(2.6rem, 7vw, 5.4rem);
  letter-spacing: -0.025em;
  line-height: 0.98;
}
.h-sec {
  font-size: clamp(2rem, 4.4vw, 3.4rem);
  letter-spacing: -0.02em;
}
.h-card {
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
}
.lead {
  font-size: clamp(1.05rem, 1.5vw, 1.3rem);
  line-height: 1.6;
  color: var(--t-on-dark-2);
}
.on-light .lead {
  color: var(--t-on-light-2);
}
.muted {
  color: var(--t-on-dark-2);
}
.on-light .muted {
  color: var(--t-on-light-2);
}

/* ---------- Buttons ---------- */
.btn {
  --b: var(--copper);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 28px;
  border-radius: 999px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.01em;
  cursor: pointer;
  border: 1px solid transparent;
  transition:
    transform 0.35s var(--ease),
    background 0.35s var(--ease),
    color 0.35s var(--ease),
    box-shadow 0.35s var(--ease);
  will-change: transform;
}
.btn:focus-visible {
  outline: 2px solid var(--copper-2);
  outline-offset: 3px;
}
.btn-primary {
  background: var(--copper);
  color: #1a1109;
  box-shadow: 0 10px 30px -10px rgba(199, 123, 67, 0.6);
}
.btn-primary:hover {
  background: var(--copper-2);
  transform: translateY(-2px);
  box-shadow: 0 16px 40px -12px rgba(199, 123, 67, 0.7);
}
.btn-ghost {
  background: transparent;
  color: var(--t-on-dark);
  border-color: var(--line);
}
.btn-ghost:hover {
  border-color: var(--copper);
  color: #fff;
  transform: translateY(-2px);
}
.on-light .btn-ghost {
  color: var(--t-on-light);
  border-color: #d8cfc0;
}
.on-light .btn-ghost:hover {
  border-color: var(--copper);
  color: var(--copper-ink);
}

/* ---------- Chips / Tags ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--t-on-dark);
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(6px);
}
.chip .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--copper);
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 60;
  transition:
    background 0.4s var(--ease),
    border-color 0.4s var(--ease),
    backdrop-filter 0.4s;
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(10, 19, 27, 0.82);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--line);
}
.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
  gap: 24px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav-links a {
  font-size: 15px;
  font-weight: 600;
  color: var(--t-on-dark-2);
  position: relative;
  transition: color 0.3s var(--ease);
}
.nav-links a:hover {
  color: var(--t-on-dark);
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  height: 1.5px;
  width: 0;
  background: var(--copper);
  transition: width 0.35s var(--ease);
}
.nav-links a:hover::after {
  width: 100%;
}
.nav-phone {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
}
.nav-desktop-cta {
  display: flex;
  align-items: center;
  gap: 18px;
}

/* Burger */
.burger {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.burger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--t-on-dark);
  position: relative;
  transition: 0.3s var(--ease);
}
.burger span::before,
.burger span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background: var(--t-on-dark);
  transition: 0.3s var(--ease);
}
.burger span::before {
  top: -6px;
}
.burger span::after {
  top: 6px;
}
body.menu-open .burger span {
  background: transparent;
}
body.menu-open .burger span::before {
  top: 0;
  transform: rotate(45deg);
}
body.menu-open .burger span::after {
  top: 0;
  transform: rotate(-45deg);
}

/* Mobile menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 55;
  background: var(--ink-2);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  padding: 0 32px;
  transform: translateX(100%);
  transition: transform 0.5s var(--ease);
}
body.menu-open .mobile-menu {
  transform: translateX(0);
}
.mobile-menu a {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.8rem, 8vw, 2.6rem);
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}
.mobile-menu a small {
  display: block;
  font-family: var(--font-body);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--copper);
  margin-top: 2px;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}
.hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 70% center;
}
.hero__scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(
      90deg,
      rgba(10, 19, 27, 0.96) 0%,
      rgba(10, 19, 27, 0.72) 38%,
      rgba(10, 19, 27, 0.2) 70%,
      rgba(10, 19, 27, 0.45) 100%
    ),
    linear-gradient(0deg, rgba(10, 19, 27, 0.92) 0%, rgba(10, 19, 27, 0) 45%);
}
.hero__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  padding-bottom: clamp(48px, 8vh, 96px);
  padding-top: 120px;
}
.hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

/* ---------- Cards / Leistungen ---------- */
.svc-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(28px, 5vw, 80px);
  align-items: center;
}
.svc-row + .svc-row {
  margin-top: clamp(56px, 9vw, 120px);
}
.svc-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--ink-3);
}
.svc-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.2s var(--ease);
}
.svc-media:hover img {
  transform: scale(1.05);
}
.svc-media__num {
  position: absolute;
  top: 18px;
  left: 20px;
  z-index: 2;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--copper-2);
  background: rgba(10, 19, 27, 0.6);
  backdrop-filter: blur(6px);
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(224, 160, 94, 0.3);
}
.svc-list {
  list-style: none;
  padding: 0;
  margin: 22px 0 0;
  display: grid;
  gap: 11px;
}
.svc-list li {
  position: relative;
  padding-left: 28px;
  color: var(--t-on-dark-2);
  font-size: 15.5px;
}
.on-light .svc-list li {
  color: var(--t-on-light-2);
}
.svc-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 13px;
  height: 2px;
  background: var(--copper);
  border-radius: 2px;
}

/* ---------- Zahlen-Wand ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.stat {
  padding: clamp(28px, 4vw, 48px) clamp(20px, 3vw, 36px);
  border-right: 1px solid var(--line);
}
.stat:last-child {
  border-right: 0;
}
.stat__num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.4rem, 4.5vw, 3.6rem);
  color: var(--porcelain);
  line-height: 1;
  letter-spacing: -0.02em;
}
.stat__num .u {
  color: var(--copper);
}
.stat__label {
  margin-top: 12px;
  font-size: 14px;
  color: var(--t-on-dark-2);
  letter-spacing: 0.01em;
}

/* ---------- Ablauf ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}
.step {
  position: relative;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}
.step__n {
  font-family: var(--font-display);
  font-weight: 900;
  color: var(--copper);
  font-size: 14px;
  letter-spacing: 0.1em;
}
.step h3 {
  font-size: 1.25rem;
  margin: 14px 0 8px;
}

/* ---------- Notdienst ---------- */
.emergency {
  background:
    radial-gradient(
      120% 140% at 80% 0%,
      rgba(199, 123, 67, 0.18),
      transparent 55%
    ),
    var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(36px, 6vw, 72px);
  position: relative;
  overflow: hidden;
}
.emergency__words {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 34px;
}
.emergency__words span {
  border: 1px solid rgba(224, 160, 94, 0.35);
  color: var(--copper-2);
  padding: 8px 16px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14.5px;
}
.safety-note {
  font-size: 13.5px;
  color: var(--t-on-dark-2);
  border-left: 2px solid var(--copper);
  padding-left: 16px;
  margin-top: 28px;
  max-width: 620px;
}

/* ---------- Partner ---------- */
.partners {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: clamp(28px, 5vw, 64px);
}
.partner {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.1rem, 2vw, 1.5rem);
  color: var(--t-on-dark-2);
  letter-spacing: 0.01em;
  opacity: 0.7;
  transition:
    opacity 0.3s,
    color 0.3s;
}
.partner:hover {
  opacity: 1;
  color: var(--copper-2);
}

/* ---------- Kontakt / Form ---------- */
.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}
.field label {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--t-on-light-2);
}
.field input,
.field textarea {
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--t-on-light);
  background: #fff;
  border: 1px solid #dbd3c5;
  border-radius: 12px;
  padding: 14px 16px;
  transition:
    border-color 0.25s var(--ease),
    box-shadow 0.25s var(--ease);
}
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--copper);
  box-shadow: 0 0 0 3px rgba(199, 123, 67, 0.16);
}
.field textarea {
  resize: vertical;
  min-height: 130px;
}
.consent {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 13.5px;
  color: var(--t-on-light-2);
  margin-bottom: 22px;
}
.consent input {
  margin-top: 4px;
  accent-color: var(--copper);
  width: 18px;
  height: 18px;
}
.info-row {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px 0;
  border-bottom: 1px solid #e3dbcd;
}
.info-row .ic {
  color: var(--copper);
  flex: 0 0 auto;
  margin-top: 2px;
}

/* Map gate */
.map-gate {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16/10;
  background: var(--ink-3);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.map-gate__inner {
  padding: 28px;
  max-width: 420px;
}
.map-gate iframe {
  width: 100%;
  height: 100%;
  border: 0;
}
/* Karten-Insel ist dunkel, auch innerhalb heller Sektion → helle Button-Schrift erzwingen */
.map-gate .btn-ghost {
  color: var(--t-on-dark);
  border-color: var(--line);
}
.map-gate .btn-ghost:hover {
  color: #fff;
  border-color: var(--copper);
}

/* ---------- Grids: Kontakt / Notdienst / Formular ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(30px, 5vw, 64px);
}
.emergency-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}
.field-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ---------- Sticky Call Bar (mobil) ---------- */
.callbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 70;
  display: none;
  grid-template-columns: 1fr 1fr;
  background: var(--ink-2);
  border-top: 1px solid var(--line);
  padding: 10px;
  gap: 10px;
  padding-bottom: calc(10px + env(safe-area-inset-bottom));
}
.callbar a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 14.5px;
}
.callbar .c-call {
  background: var(--copper);
  color: #1a1109;
}
.callbar .c-quote {
  background: rgba(255, 255, 255, 0.06);
  color: var(--t-on-dark);
  border: 1px solid var(--line);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink-2);
  border-top: 1px solid var(--line);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}
.footer-links a {
  color: var(--t-on-dark-2);
  font-size: 15px;
  transition: color 0.25s;
}
.footer-links a:hover {
  color: var(--copper-2);
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  padding-top: 26px;
  margin-top: 40px;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
  color: var(--t-on-dark-2);
}

/* ---------- Reveal-Animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
}
.reveal.is-in {
  opacity: 1;
  transform: none;
  transition:
    opacity 0.9s var(--ease),
    transform 0.9s var(--ease);
}
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
  .svc-media img {
    transition: none;
  }
}

/* ---------- Skip link / a11y ---------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--copper);
  color: #1a1109;
  padding: 12px 18px;
  border-radius: 0 0 10px 0;
  font-weight: 700;
}
.skip-link:focus {
  left: 0;
}
:focus-visible {
  outline: 2px solid var(--copper-2);
  outline-offset: 2px;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat:nth-child(2) {
    border-right: 0;
  }
  .stat:nth-child(1),
  .stat:nth-child(2) {
    border-bottom: 1px solid var(--line);
  }
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 860px) {
  .nav-links,
  .nav-desktop-cta {
    display: none;
  }
  .burger {
    display: inline-flex;
  }
  .callbar {
    display: grid;
  }
  .svc-row {
    grid-template-columns: 1fr;
    gap: 26px;
  }
  .svc-row--rev .svc-media {
    order: -1;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .contact-grid,
  .emergency-grid {
    grid-template-columns: 1fr;
  }
  body {
    padding-bottom: 0;
  }
  .hero__media img {
    object-position: 64% center;
  }
}
@media (max-width: 520px) {
  .stats {
    grid-template-columns: 1fr;
  }
  .field-2 {
    grid-template-columns: 1fr;
  }
  .stat {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .stat:last-child {
    border-bottom: 0;
  }
  .steps {
    grid-template-columns: 1fr;
  }
}