@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:300;font-display:swap;src:url("fonts/ibm-plex-sans-300.woff2") format("woff2");}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:400;font-display:swap;src:url("fonts/ibm-plex-sans-400.woff2") format("woff2");}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:500;font-display:swap;src:url("fonts/ibm-plex-sans-500.woff2") format("woff2");}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:600;font-display:swap;src:url("fonts/ibm-plex-sans-600.woff2") format("woff2");}
/* ============================================================
   MuellerCert - Variante B
   "Schweizer Grotesk / Raster, nüchtern-korporativ"
   Monochrom-Basis + optionale Navy-Tinte. IBM Plex Sans.
   ============================================================ */

:root {
  /* Farb-Tokens (aus design-system.json) */
  --ink: #111315;
  --ink-2: #3a3f44;
  --grau: #6b7177;
  --linie: #e4e6e8;
  --flaeche: #f5f6f7;
  --weiss: #ffffff;
  --navy: #1f2d3d; /* tiefe Tinte, dezent für Headings/Footer */

  /* Layout */
  --container: 1140px;
  --container-schmal: 760px;
  --pad-seite: clamp(20px, 5vw, 40px);
  --section-y: clamp(72px, 11vw, 132px);
  --block-gap: clamp(24px, 4vw, 48px);

  /* Typo */
  --font: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --lh-body: 1.65;

  --radius: 4px;
}

/* ---------- Reset / Basis ---------- */
*,
*::before,
*::after { 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);
  font-weight: 400;
  font-size: 1.0625rem;
  line-height: var(--lh-body);
  color: var(--ink);
  background: var(--weiss);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }

a { color: inherit; }

h1, h2, h3 { margin: 0; font-weight: 500; line-height: 1.2; color: var(--navy); letter-spacing: -0.01em; }

p { margin: 0; }

/* ---------- Fokus / Skip ---------- */
:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--weiss);
  padding: 10px 16px;
  z-index: 200;
}
.skip-link:focus {
  left: 8px;
  top: 8px;
}

/* ---------- Container ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--pad-seite);
}
.container--schmal { max-width: var(--container-schmal); }

/* ---------- Eyebrow ---------- */
.eyebrow {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--grau);
  margin-bottom: 14px;
}

/* ============================================================
   TOPBAR
   ============================================================ */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--weiss);
  border-bottom: 1px solid var(--linie);
}
.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 80px;
  gap: 24px;
}
.topbar__brand { display: inline-flex; align-items: center; }
.topbar__logo { height: 56px; width: auto; }

.nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav__list a {
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--ink-2);
  padding: 6px 0;
  position: relative;
  transition: color 0.15s ease;
}
.nav__list a:hover { color: var(--ink); }

.nav__cta {
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  padding: 8px 16px !important;
  color: var(--ink) !important;
  transition: background 0.15s ease, color 0.15s ease;
}
.nav__cta:hover {
  background: var(--ink);
  color: var(--weiss) !important;
}

/* Nav-Toggle (mobil) */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: none;
  border: 1px solid var(--linie);
  border-radius: var(--radius);
  cursor: pointer;
}
.nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  margin-inline: auto;
  background: var(--ink);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   BUTTONS / LINKS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 15px 26px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}
.btn--primary {
  background: var(--ink);
  color: var(--weiss);
}
.btn--primary:hover { background: var(--ink-2); }

.link-arrow {
  display: inline-flex;
  align-items: center;
  font-size: 1rem;
  font-weight: 400;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 2px;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.link-arrow::after {
  content: "\2192"; /* Pfeil rechts */
  margin-left: 8px;
  transition: transform 0.15s ease;
}
.link-arrow:hover { color: var(--grau); border-color: var(--grau); }
.link-arrow:hover::after { transform: translateX(3px); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  border-bottom: 1px solid var(--linie);
  padding-block: clamp(48px, 8vw, 96px);
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(32px, 6vw, 72px);
  align-items: center;
}
.hero__text { max-width: 36rem; }
.hero__title {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 500;
  margin-bottom: 22px;
}
.hero__lead {
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--ink-2);
  margin-bottom: 20px;
}
.hero__intro {
  font-size: 1.0625rem;
  color: var(--grau);
  margin-bottom: 32px;
  max-width: 34rem;
}
.hero__actions {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}
.hero__media {
  position: relative;
}
.hero__img {
  width: 100%;
  height: clamp(360px, 52vh, 560px);
  object-fit: cover;
  border: 1px solid var(--linie);
  filter: saturate(0.9);
}

/* ============================================================
   SECTIONS (generisch)
   ============================================================ */
.section {
  padding-block: var(--section-y);
  border-bottom: 1px solid var(--linie);
}
.section--alt { background: var(--flaeche); }

.section__head {
  max-width: 46rem;
  margin-bottom: var(--block-gap);
}
.section__title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 14px;
}
.section__lead {
  font-size: 1.25rem;
  color: var(--grau);
  font-weight: 400;
}

/* ============================================================
   UEBER MUELLERCERT
   ============================================================ */
.ueber__body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}
.ueber__text > p + p { margin-top: 18px; }
.ueber__text p { color: var(--ink-2); }

.werte {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--linie);
  border-left: 1px solid var(--linie);
}
.werte__item {
  border-right: 1px solid var(--linie);
  border-bottom: 1px solid var(--linie);
  padding: 22px 22px 24px;
}
.werte__label {
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}
.werte__item p {
  font-size: 0.95rem;
  color: var(--grau);
  line-height: 1.55;
}

/* ============================================================
   LEISTUNGEN
   ============================================================ */
.leistungen {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  /* feine Naht: ein zusammenhaengendes Raster ohne doppelte Linien */
  border-top: 1px solid var(--linie);
  border-left: 1px solid var(--linie);
}
.leistung {
  border-right: 1px solid var(--linie);
  border-bottom: 1px solid var(--linie);
  padding: clamp(24px, 3vw, 36px);
  background: var(--weiss);
}
.leistung__title {
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--navy);
  margin-bottom: 12px;
}
.leistung__text {
  color: var(--grau);
  font-size: 1rem;
}

/* ============================================================
   QUALITOP (Q&A / Merkblatt)
   ============================================================ */
.qa {
  margin: 0;
  border-top: 1px solid var(--linie);
}
.qa__row {
  display: grid;
  grid-template-columns: minmax(180px, 0.4fr) 1fr;
  gap: clamp(16px, 4vw, 48px);
  padding-block: clamp(22px, 3vw, 32px);
  border-bottom: 1px solid var(--linie);
}
.qa__q {
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--navy);
  margin: 0;
}
.qa__a {
  margin: 0;
  color: var(--ink-2);
}

/* ============================================================
   WARUM MUELLERCERT (nummerierte Liste mit Labels)
   ============================================================ */
.gruende {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--linie);
}
.grund {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: clamp(16px, 3vw, 40px);
  align-items: baseline;
  padding-block: clamp(20px, 3vw, 30px);
  border-bottom: 1px solid var(--linie);
}
.grund__num {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--grau);
  letter-spacing: 0.04em;
}
.grund__label {
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 8px;
}
.grund__body p { color: var(--grau); }

/* ============================================================
   KONTAKT
   ============================================================ */
.kontakt__grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: clamp(32px, 6vw, 72px);
  align-items: start;
}

.form { display: grid; gap: 20px; }
.form__field { display: grid; gap: 8px; }
.form__field label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink);
}
.form__field input,
.form__field textarea {
  font-family: inherit;
  font-size: 1rem;
  color: var(--ink);
  background: var(--weiss);
  border: 1px solid var(--linie);
  border-radius: var(--radius);
  padding: 13px 14px;
  width: 100%;
  transition: border-color 0.15s ease;
}
.form__field input:focus,
.form__field textarea:focus {
  outline: none;
  border-color: var(--ink);
}
.form__field textarea { resize: vertical; min-height: 120px; }
.form .btn { justify-self: start; margin-top: 4px; }

.kontakt__info {
  border: 1px solid var(--linie);
  background: var(--weiss);
  padding: clamp(24px, 3vw, 36px);
}
.kontakt__heading {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 20px;
}
.kontakt__list { margin: 0; }
.kontakt__list > div { padding-block: 12px; border-top: 1px solid var(--linie); }
.kontakt__list > div:first-child { border-top: none; padding-top: 0; }
.kontakt__list dt {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--grau);
  margin-bottom: 4px;
}
.kontakt__list dd { margin: 0; color: var(--ink); }
.kontakt__list a { text-decoration: none; border-bottom: 1px solid var(--linie); }
.kontakt__list a:hover { border-color: var(--ink); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--navy);
  color: #c7ccd2;
  padding-top: clamp(48px, 7vw, 80px);
}
.footer a { color: #c7ccd2; text-decoration: none; transition: color 0.15s ease; }
.footer a:hover { color: var(--weiss); }

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 0.6fr;
  gap: clamp(32px, 5vw, 64px);
  padding-bottom: clamp(36px, 5vw, 56px);
}
.footer__plakette {
  display: inline-flex;
  background: var(--weiss);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin-bottom: 20px;
}
.footer__logo { height: 60px; width: auto; }
.footer__slogan { max-width: 34rem; color: #aab1b9; }

.footer__heading {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 500;
  color: var(--weiss);
  margin-bottom: 16px;
}
.footer__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }

.footer__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-block: 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}
.footer__copy { font-size: 0.85rem; color: #97a0a8; }
.footer__legal { display: flex; gap: 22px; }
.footer__legal a { font-size: 0.85rem; }

/* ============================================================
   SCROLL-REVEAL
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__media { order: -1; }
  .hero__img { height: clamp(260px, 40vh, 360px); }

  .ueber__body { grid-template-columns: 1fr; }
  .kontakt__grid { grid-template-columns: 1fr; }

  .qa__row { grid-template-columns: 1fr; gap: 8px; }
}

@media (max-width: 760px) {
  /* Mobiles Nav */
  .nav-toggle { display: flex; }
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--weiss);
    border-bottom: 1px solid var(--linie);
    display: none;
  }
  .nav.is-open { display: block; }
  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px var(--pad-seite) 16px;
  }
  .nav__list li { border-top: 1px solid var(--linie); }
  .nav__list li:first-child { border-top: none; }
  .nav__list a { display: block; padding: 14px 0; }
  .nav__cta {
    display: inline-block;
    margin-top: 10px;
    text-align: center;
    padding: 12px 16px !important;
  }
}

@media (max-width: 600px) {
  .leistungen { grid-template-columns: 1fr; }
  .werte { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero__actions { gap: 18px; }
  .grund { grid-template-columns: 1fr; gap: 4px; }
  .grund__num { margin-bottom: 4px; }
  .footer__bar { flex-direction: column; align-items: flex-start; }
}

/* Kontaktformular-Hinweis nach dem Absenden */
.form__hinweis{margin-top:16px;padding:12px 16px;border:1px solid var(--linie);background:var(--flaeche);font-size:.95rem;color:var(--ink-2);}
.form__hinweis a{color:var(--navy);text-underline-offset:2px;}
.form__hinweis--ok{border-color:#bfe3c8;background:#f1faf3;color:#1f7a3d;}
.form__hinweis--err{border-color:#f1c4bf;background:#fdf3f2;color:#b42318;}
.form__hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0;overflow:hidden;}
.qualitop-label{display:inline-block;margin-top:24px;line-height:0;}
.qualitop-label img{height:46px;width:auto;border-radius:4px;}
.qualitop-label:focus-visible{outline:2px solid var(--ink);outline-offset:3px;}
.person{display:grid;grid-template-columns:300px 1fr;gap:clamp(28px,4vw,56px);align-items:start;margin-top:clamp(40px,6vw,72px);padding-top:clamp(40px,6vw,72px);border-top:1px solid var(--linie);}
.person__media{background:var(--flaeche);border-radius:6px;overflow:hidden;}
.person__media img{width:100%;height:auto;display:block;aspect-ratio:4/5;object-fit:cover;}
.person__name{font-size:clamp(1.4rem,2.6vw,1.9rem);color:var(--navy);margin:8px 0 2px;}
.person__role{color:var(--grau);margin-bottom:18px;}
.person__text p{margin-bottom:14px;}
.person__text p:last-child{margin-bottom:0;}
@media (max-width:720px){.person{grid-template-columns:1fr;}.person__media{max-width:280px;}}
/* ---------- Rechtstexte (Impressum / Datenschutz) ---------- */
.subpage-main{padding-top:clamp(40px,8vw,84px);padding-bottom:clamp(48px,9vw,110px);}
.legal{max-width:var(--container-schmal);}
.legal h1{font-size:clamp(1.8rem,3.5vw,2.4rem);margin-bottom:6px;}
.legal .eyebrow{margin-bottom:18px;}
.legal h2{font-size:1.2rem;margin:34px 0 10px;color:var(--navy);}
.legal p,.legal address{margin:0 0 14px;color:var(--ink-2);}
.legal address{font-style:normal;line-height:1.65;}
.legal a{color:var(--navy);text-underline-offset:2px;}
.legal ul{margin:0 0 14px;padding-left:1.1rem;color:var(--ink-2);}
.legal li{margin-bottom:6px;}
.legal__back{display:inline-block;margin-top:40px;font-weight:500;color:var(--navy);text-underline-offset:3px;}
.footer__copy a{color:#cbd2d9;text-decoration:underline;text-underline-offset:2px;}