/* ===== Haustechnik Virsis – Hauptstylesheet ===== */
:root{
  --ink:#181c1f;
  --ink-soft:#3c434a;
  --muted:#6d747b;
  --paper:#f6f5f1;
  --weiss:#ffffff;
  --linie:#e2e0d8;
  --gruen-950:#0e2b24;
  --gruen-900:#123830;
  --gruen-800:#17493e;
  --gruen-700:#1d5a4c;
  --gruen-100:#e6efec;
  --sand:#c8a86a;
  --radius:4px;
  --font-sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --font-serif:Georgia,"Times New Roman",Times,serif;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  color:var(--ink);
  background:var(--weiss);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%}
a{color:var(--gruen-800);text-decoration:none}
a:hover{text-decoration:underline}
ul{list-style:none}

.container{max-width:1120px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--paper{background:var(--paper)}

.section-kopf{max-width:720px;margin-bottom:48px}
.section-kicker{
  display:block;
  color:var(--gruen-700);
  font-weight:600;
  font-size:.78rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  margin-bottom:12px;
}
.section-titel{
  font-family:var(--font-serif);
  font-weight:400;
  font-size:clamp(1.7rem,3.4vw,2.4rem);
  line-height:1.25;
  color:var(--ink);
  margin-bottom:16px;
}
.section-intro{color:var(--ink-soft)}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:15px 30px;
  border-radius:var(--radius);
  border:1px solid transparent;
  font-weight:600;font-size:.86rem;
  letter-spacing:.1em;text-transform:uppercase;
  transition:background .15s ease,border-color .15s ease,color .15s ease;
  text-decoration:none;cursor:pointer;
}
.btn:hover{text-decoration:none}
.btn--voll{background:var(--gruen-800);color:#fff}
.btn--voll:hover{background:var(--gruen-950)}
.btn--rahmen{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn--rahmen:hover{background:var(--ink);color:#fff}
.btn--hell{background:#fff;color:var(--gruen-900)}
.btn--hell:hover{background:var(--paper)}
.btn svg{width:17px;height:17px;flex:none}

/* ===== Notdienstleiste ===== */
.notleiste{
  background:var(--ink);
  color:#c9cdd1;
  font-size:.82rem;
  letter-spacing:.02em;
}
.notleiste .container{
  display:flex;justify-content:space-between;align-items:center;
  gap:16px;flex-wrap:wrap;
  padding-top:9px;padding-bottom:9px;
}
.notleiste a{color:#fff;font-weight:600}
.notleiste-gruppe{display:flex;gap:26px;flex-wrap:wrap}
.notleiste-item{display:flex;align-items:center;gap:8px}
.notleiste-item svg{width:14px;height:14px;flex:none;color:var(--sand)}

/* ===== Header ===== */
.header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.97);
  border-bottom:1px solid var(--linie);
}
.header .container{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;padding-top:18px;padding-bottom:18px;
}
.logo{display:flex;align-items:center;gap:14px;text-decoration:none}
.logo:hover{text-decoration:none}
.logo-monogramm{
  width:44px;height:44px;flex:none;
  background:var(--gruen-900);color:#fff;
  display:grid;place-items:center;
  font-family:var(--font-serif);
  font-size:1.45rem;line-height:1;
}
.logo-text{line-height:1.2}
.logo-text strong{
  display:block;color:var(--ink);
  font-family:var(--font-serif);font-weight:400;
  font-size:1.22rem;letter-spacing:.01em;
}
.logo-text span{
  display:block;color:var(--muted);
  font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;
}
.nav ul{display:flex;gap:34px;align-items:center}
.nav a{
  color:var(--ink-soft);font-weight:600;
  font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;
}
.nav a:hover{color:var(--gruen-800);text-decoration:none}
.header-cta{display:flex;align-items:center;gap:14px}
.header-cta .btn{padding:12px 22px;font-size:.78rem}

.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle svg{width:26px;height:26px;color:var(--ink)}

/* ===== Hero ===== */
.hero{background:var(--paper);border-bottom:1px solid var(--linie)}
.hero .container{
  display:grid;grid-template-columns:1.5fr 1fr;
  gap:64px;align-items:center;
  padding-top:96px;padding-bottom:96px;
}
.hero-kicker{
  display:block;color:var(--gruen-700);
  font-weight:600;font-size:.78rem;
  letter-spacing:.18em;text-transform:uppercase;
  margin-bottom:18px;
}
.hero h1{
  font-family:var(--font-serif);
  font-weight:400;
  font-size:clamp(2.1rem,4.6vw,3.2rem);
  line-height:1.18;
  margin-bottom:22px;
}
.hero h1 em{font-style:italic;color:var(--gruen-800)}
.hero-text{color:var(--ink-soft);max-width:540px;margin-bottom:34px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:44px}
.hero-punkte{
  display:flex;gap:0;flex-wrap:wrap;
  border-top:1px solid var(--linie);
}
.hero-punkt{
  display:flex;align-items:center;gap:9px;
  padding:16px 26px 0 0;margin-right:26px;
  font-size:.88rem;font-weight:600;color:var(--ink-soft);
}
.hero-punkt svg{width:16px;height:16px;flex:none;color:var(--gruen-700)}

.hero-karte{
  background:var(--gruen-900);color:#fff;
  padding:38px 34px;
}
.hero-karte h2{
  font-family:var(--font-serif);font-weight:400;
  font-size:1.35rem;margin-bottom:6px;
}
.hero-karte>p{color:#b9ccc5;font-size:.9rem;margin-bottom:24px}
.hero-karte-liste li{
  display:flex;gap:13px;align-items:flex-start;
  padding:13px 0;border-top:1px solid rgba(255,255,255,.14);
}
.hero-karte-liste svg{width:17px;height:17px;flex:none;margin-top:3px;color:var(--sand)}
.hero-karte-liste strong{display:block;font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:#9db5ad}
.hero-karte-liste a,.hero-karte-liste span{color:#fff;font-size:.98rem}
.hero-karte .btn{width:100%;margin-top:22px}

/* ===== Leistungen ===== */
.leistungen-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:26px;
}
.leistung{
  background:var(--weiss);
  border:1px solid var(--linie);
  border-top:3px solid var(--gruen-800);
  padding:30px 28px;
  transition:border-color .15s ease,box-shadow .15s ease;
}
.leistung:hover{box-shadow:0 10px 30px rgba(24,28,31,.07)}
.leistung-nr{
  display:block;
  font-family:var(--font-serif);
  font-size:.95rem;color:var(--sand);
  letter-spacing:.08em;
  margin-bottom:14px;
}
.leistung h3{
  font-family:var(--font-serif);font-weight:400;
  font-size:1.22rem;margin-bottom:10px;
}
.leistung p{color:var(--ink-soft);font-size:.94rem}

/* ===== Über uns / Vorteile ===== */
.vorteile-wrap{
  display:grid;grid-template-columns:1.15fr 1fr;
  gap:64px;align-items:start;
}
.vorteile-liste{margin-top:36px}
.vorteile-liste li{
  display:flex;gap:18px;align-items:flex-start;
  padding:20px 0;border-top:1px solid var(--linie);
}
.vorteil-icon{
  width:42px;height:42px;flex:none;
  border:1px solid var(--gruen-800);
  color:var(--gruen-800);
  display:grid;place-items:center;
}
.vorteil-icon svg{width:20px;height:20px}
.vorteile-liste strong{display:block;margin-bottom:2px}
.vorteile-liste span{color:var(--ink-soft);font-size:.94rem}

.ueber-karte{
  background:var(--weiss);
  border:1px solid var(--linie);
  padding:38px 34px;
}
.ueber-karte h3{
  font-family:var(--font-serif);font-weight:400;
  font-size:1.35rem;margin-bottom:16px;
}
.ueber-karte p{color:var(--ink-soft);font-size:.95rem;margin-bottom:16px}
.ueber-inhaber{
  display:flex;align-items:center;gap:15px;
  margin-top:26px;padding-top:24px;
  border-top:1px solid var(--linie);
}
.ueber-inhaber-avatar{
  width:52px;height:52px;flex:none;
  background:var(--gruen-900);color:#fff;
  display:grid;place-items:center;
  font-family:var(--font-serif);font-size:1.15rem;
}
.ueber-inhaber strong{display:block;line-height:1.3}
.ueber-inhaber span{color:var(--muted);font-size:.85rem}

/* ===== Ablauf ===== */
.ablauf-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:0;
  border-left:1px solid var(--linie);
}
.schritt{
  padding:6px 28px 0;
  border-right:1px solid var(--linie);
}
.schritt-nr{
  display:block;
  font-family:var(--font-serif);
  font-size:2.6rem;line-height:1;
  color:var(--gruen-800);
  margin-bottom:16px;
}
.schritt h3{
  font-family:var(--font-serif);font-weight:400;
  font-size:1.12rem;margin-bottom:8px;
}
.schritt p{color:var(--ink-soft);font-size:.92rem}

/* ===== Notdienst-Band ===== */
.notdienst{background:var(--gruen-900);color:#fff}
.notdienst .container{
  display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
  padding-top:64px;padding-bottom:64px;
}
.notdienst h2{
  font-family:var(--font-serif);font-weight:400;
  font-size:clamp(1.5rem,2.8vw,2rem);
  margin-bottom:10px;
}
.notdienst p{color:#b9ccc5;max-width:560px}

/* ===== FAQ ===== */
.faq-liste{max-width:820px}
.faq-item{border-top:1px solid var(--linie)}
.faq-item:last-child{border-bottom:1px solid var(--linie)}
.faq-item summary{
  cursor:pointer;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:20px;
  padding:20px 4px;
  font-family:var(--font-serif);
  font-size:1.08rem;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";
  font-family:var(--font-sans);
  font-size:1.3rem;font-weight:300;
  color:var(--gruen-800);flex:none;
  transition:transform .15s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{color:var(--ink-soft);font-size:.95rem;padding:0 4px 22px;max-width:700px}

/* ===== Kontakt ===== */
.kontakt-wrap{
  display:grid;grid-template-columns:1fr 1.35fr;
  gap:64px;align-items:start;
}
.kontakt-info li{
  display:flex;gap:18px;align-items:flex-start;
  padding:18px 0;border-top:1px solid var(--linie);
}
.kontakt-info strong{
  display:block;font-size:.75rem;
  letter-spacing:.12em;text-transform:uppercase;
  color:var(--muted);margin-bottom:2px;
}
.kontakt-info a,.kontakt-info div>span{color:var(--ink);font-size:1rem}

.kontakt-form{
  background:var(--weiss);
  border:1px solid var(--linie);
  padding:38px 34px;
}
.kontakt-form label{
  display:block;
  font-size:.75rem;font-weight:600;
  letter-spacing:.12em;text-transform:uppercase;
  color:var(--ink-soft);
  margin:18px 0 6px;
}
.kontakt-form label:first-of-type{margin-top:0}
.kontakt-form input,
.kontakt-form select,
.kontakt-form textarea{
  width:100%;
  padding:13px 14px;
  border:1px solid var(--linie);
  border-radius:var(--radius);
  background:var(--paper);
  font:inherit;color:var(--ink);
}
.kontakt-form input:focus,
.kontakt-form select:focus,
.kontakt-form textarea:focus{
  outline:none;border-color:var(--gruen-700);
  background:var(--weiss);
}
.form-zeile{display:grid;grid-template-columns:1fr 1fr;gap:0 20px}
.kontakt-form .btn{margin-top:26px}
.form-hinweis{font-size:.8rem;color:var(--muted);margin-top:14px}

/* ===== Footer ===== */
.footer{background:var(--ink);color:#aeb4ba;font-size:.92rem}
.footer .container{padding-top:64px;padding-bottom:28px}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:44px;margin-bottom:48px;
}
.footer .logo-monogramm{background:#fff;color:var(--gruen-900)}
.footer .logo-text strong{color:#fff}
.footer .logo-text span{color:#8b9298}
.footer-grid>div>p{margin-top:18px;max-width:320px}
.footer h4{
  color:#fff;font-size:.78rem;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;
  margin-bottom:16px;
}
.footer ul li{margin-bottom:9px}
.footer a{color:#aeb4ba}
.footer a:hover{color:#fff}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;
  gap:14px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.12);
  padding-top:24px;
  font-size:.82rem;color:#8b9298;
}
.footer-bottom a{margin-left:20px;color:#aeb4ba}

/* ===== Unterseiten (Impressum/Datenschutz) ===== */
.seite-inhalt{padding:72px 24px;max-width:820px}
.seite-inhalt h1{
  font-family:var(--font-serif);font-weight:400;
  font-size:2.1rem;margin-bottom:28px;
}
.seite-inhalt h2{
  font-family:var(--font-serif);font-weight:400;
  font-size:1.35rem;margin:34px 0 10px;
}
.seite-inhalt h3{font-size:1.02rem;margin:20px 0 8px}
.seite-inhalt p,.seite-inhalt ul{color:var(--ink-soft);margin-bottom:12px}
.seite-inhalt ul{list-style:disc;padding-left:22px}

/* ===== Responsive ===== */
@media (max-width:960px){
  .hero .container{grid-template-columns:1fr;gap:44px;padding-top:64px;padding-bottom:64px}
  .leistungen-grid{grid-template-columns:repeat(2,1fr)}
  .vorteile-wrap,.kontakt-wrap{grid-template-columns:1fr;gap:44px}
  .ablauf-grid{grid-template-columns:1fr 1fr;border-left:0}
  .schritt{border-right:0;border-top:1px solid var(--linie);padding:24px 4px 18px}
}

@media (max-width:760px){
  .section{padding:60px 0}
  .notleiste-gruppe:first-child{display:none}
  .nav{
    display:none;
    position:absolute;left:0;right:0;top:100%;
    background:var(--weiss);
    border-bottom:1px solid var(--linie);
    padding:10px 24px 22px;
  }
  .nav.offen{display:block}
  .nav ul{flex-direction:column;align-items:flex-start;gap:0}
  .nav ul li{width:100%}
  .nav a{display:block;padding:13px 0;border-bottom:1px solid var(--linie)}
  .nav-toggle{display:block}
  .header-cta .btn span{display:none}
  .header-cta .btn{padding:12px 14px}
  .leistungen-grid{grid-template-columns:1fr}
  .ablauf-grid{grid-template-columns:1fr}
  .form-zeile{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
}