/* ===== Haustechnik Daniels – Hauptstylesheet ===== */
:root{
  --blau-900:#0b2a4a;
  --blau-800:#123a63;
  --blau-700:#1a4d80;
  --blau-100:#e8f0f9;
  --orange-600:#e8620d;
  --orange-500:#f4761f;
  --orange-100:#fdeadb;
  --grau-900:#1c2530;
  --grau-700:#3f4b59;
  --grau-500:#68737f;
  --grau-200:#e4e8ec;
  --grau-100:#f4f6f8;
  --weiss:#ffffff;
  --radius:14px;
  --schatten:0 6px 24px rgba(11,42,74,.10);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--grau-900);
  background:var(--weiss);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%}
a{color:var(--blau-700);text-decoration:none}
a:hover{text-decoration:underline}
ul{list-style:none}

.container{max-width:1160px;margin:0 auto;padding:0 20px}
.section{padding:72px 0}
.section--grau{background:var(--grau-100)}
.section-kicker{
  display:inline-block;
  color:var(--orange-600);
  font-weight:700;
  font-size:.85rem;
  letter-spacing:.08em;
  text-transform:uppercase;
  margin-bottom:8px;
}
.section-titel{font-size:clamp(1.6rem,3.2vw,2.2rem);color:var(--blau-900);margin-bottom:14px;line-height:1.25}
.section-intro{max-width:680px;color:var(--grau-700);margin-bottom:36px}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 26px;border-radius:999px;
  font-weight:700;font-size:1rem;
  transition:transform .15s ease,box-shadow .15s ease,background .15s ease;
  text-decoration:none;
}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn--primaer{background:var(--orange-600);color:#fff;box-shadow:0 4px 14px rgba(232,98,13,.35)}
.btn--primaer:hover{background:var(--orange-500)}
.btn--sekundaer{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.55)}
.btn--sekundaer:hover{border-color:#fff}
.btn--blau{background:var(--blau-800);color:#fff}
.btn--blau:hover{background:var(--blau-700)}
.btn svg{width:20px;height:20px;flex:none}

/* ===== Topbar ===== */
.topbar{background:var(--blau-900);color:#dbe6f2;font-size:.85rem}
.topbar .container{display:flex;justify-content:space-between;align-items:center;padding-top:7px;padding-bottom:7px;gap:12px;flex-wrap:wrap}
.topbar a{color:#fff;font-weight:600}
.topbar-items{display:flex;gap:22px;flex-wrap:wrap}
.topbar-item{display:flex;align-items:center;gap:7px}
.topbar-item svg{width:15px;height:15px;flex:none}

/* ===== Header / Navigation ===== */
.header{
  position:sticky;top:0;z-index:50;
  background:var(--weiss);
  box-shadow:0 2px 12px rgba(11,42,74,.08);
}
.header .container{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:14px;padding-bottom:14px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none}
.logo:hover{text-decoration:none}
.logo-mark{
  width:46px;height:46px;flex:none;border-radius:12px;
  background:linear-gradient(135deg,var(--blau-800),var(--blau-700));
  display:grid;place-items:center;color:#fff;
}
.logo-mark svg{width:26px;height:26px}
.logo-text{line-height:1.15}
.logo-text strong{display:block;color:var(--blau-900);font-size:1.15rem}
.logo-text span{display:block;color:var(--grau-500);font-size:.78rem;letter-spacing:.04em}
.nav ul{display:flex;gap:28px;align-items:center}
.nav a{color:var(--grau-700);font-weight:600;font-size:.95rem}
.nav a:hover{color:var(--blau-800);text-decoration:none}
.header-cta{display:flex;align-items:center;gap:14px}
.header-cta .btn{padding:11px 20px;font-size:.92rem}

.nav-toggle{
  display:none;background:none;border:0;cursor:pointer;padding:8px;
}
.nav-toggle svg{width:28px;height:28px;color:var(--blau-900)}

/* ===== Hero ===== */
.hero{
  background:
    linear-gradient(115deg,rgba(11,42,74,.96) 0%,rgba(18,58,99,.92) 55%,rgba(26,77,128,.85) 100%),
    var(--blau-900);
  color:#fff;
  padding:88px 0 96px;
  position:relative;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-120px;
  width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(244,118,31,.22),transparent 70%);
}
.hero .container{position:relative;z-index:1;max-width:820px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.25);
  padding:7px 16px;border-radius:999px;
  font-size:.85rem;font-weight:600;margin-bottom:22px;
}
.hero-badge svg{width:16px;height:16px;color:var(--orange-500)}
.hero h1{font-size:clamp(1.9rem,4.5vw,3rem);line-height:1.2;margin-bottom:18px}
.hero h1 em{font-style:normal;color:var(--orange-500)}
.hero p{font-size:1.1rem;color:#d5e1ef;max-width:600px;margin-bottom:32px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:40px}
.hero-punkte{display:flex;gap:26px;flex-wrap:wrap}
.hero-punkt{display:flex;align-items:center;gap:9px;font-size:.92rem;color:#e3ecf6;font-weight:600}
.hero-punkt svg{width:18px;height:18px;color:var(--orange-500);flex:none}

/* ===== Leistungen ===== */
.leistungen-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.leistung{
  background:var(--weiss);
  border:1px solid var(--grau-200);
  border-radius:var(--radius);
  padding:28px 24px;
  transition:transform .15s ease,box-shadow .15s ease;
}
.leistung:hover{transform:translateY(-4px);box-shadow:var(--schatten)}
.leistung-icon{
  width:54px;height:54px;border-radius:14px;
  background:var(--blau-100);color:var(--blau-800);
  display:grid;place-items:center;margin-bottom:18px;
}
.leistung-icon svg{width:28px;height:28px}
.leistung h3{color:var(--blau-900);font-size:1.12rem;margin-bottom:8px}
.leistung p{color:var(--grau-700);font-size:.94rem}

/* ===== Vorteile ===== */
.vorteile-wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.vorteile-liste li{
  display:flex;gap:16px;align-items:flex-start;
  padding:14px 0;border-bottom:1px solid var(--grau-200);
}
.vorteile-liste li:last-child{border-bottom:0}
.vorteil-icon{
  width:40px;height:40px;flex:none;border-radius:10px;
  background:var(--orange-100);color:var(--orange-600);
  display:grid;place-items:center;
}
.vorteil-icon svg{width:22px;height:22px}
.vorteile-liste strong{display:block;color:var(--blau-900)}
.vorteile-liste span{color:var(--grau-700);font-size:.93rem}

.ueber-karte{
  background:linear-gradient(150deg,var(--blau-900),var(--blau-700));
  color:#fff;border-radius:var(--radius);
  padding:38px 34px;box-shadow:var(--schatten);
}
.ueber-karte h3{font-size:1.35rem;margin-bottom:14px}
.ueber-karte p{color:#d5e1ef;font-size:.97rem;margin-bottom:16px}
.ueber-karte p:last-of-type{margin-bottom:26px}
.ueber-inhaber{
  display:flex;align-items:center;gap:14px;
  border-top:1px solid rgba(255,255,255,.2);padding-top:22px;
}
.ueber-inhaber-avatar{
  width:52px;height:52px;border-radius:50%;flex:none;
  background:var(--orange-600);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:1.05rem;
}
.ueber-inhaber strong{display:block}
.ueber-inhaber span{font-size:.85rem;color:#c4d4e6}

/* ===== Ablauf ===== */
.ablauf-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.schritt{position:relative;background:var(--weiss);border:1px solid var(--grau-200);border-radius:var(--radius);padding:26px 22px}
.schritt-nr{
  width:42px;height:42px;border-radius:50%;
  background:var(--orange-600);color:#fff;
  display:grid;place-items:center;font-weight:800;
  margin-bottom:16px;font-size:1.05rem;
}
.schritt h3{color:var(--blau-900);font-size:1.05rem;margin-bottom:6px}
.schritt p{color:var(--grau-700);font-size:.92rem}

/* ===== Notdienst-Banner ===== */
.notdienst{
  background:linear-gradient(120deg,var(--orange-600),var(--orange-500));
  color:#fff;padding:52px 0;
}
.notdienst .container{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.notdienst h2{font-size:clamp(1.4rem,2.8vw,1.9rem);margin-bottom:6px}
.notdienst p{color:#fff3e8;max-width:520px}
.notdienst .btn{background:#fff;color:var(--orange-600);box-shadow:0 4px 14px rgba(0,0,0,.15)}
.notdienst .btn:hover{background:var(--grau-100)}

/* ===== FAQ ===== */
.faq-liste{max-width:780px}
.faq-item{border:1px solid var(--grau-200);border-radius:var(--radius);margin-bottom:12px;background:var(--weiss);overflow:hidden}
.faq-item summary{
  cursor:pointer;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding:18px 22px;font-weight:700;color:var(--blau-900);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:1.5rem;color:var(--orange-600);font-weight:400;
  transition:transform .2s ease;flex:none;line-height:1;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{padding:0 22px 20px;color:var(--grau-700);font-size:.95rem}

/* ===== Kontakt ===== */
.kontakt-wrap{display:grid;grid-template-columns:1fr 1.2fr;gap:48px;align-items:start}
.kontakt-info li{display:flex;gap:16px;align-items:flex-start;margin-bottom:22px}
.kontakt-info .vorteil-icon{background:var(--blau-100);color:var(--blau-800)}
.kontakt-info strong{display:block;color:var(--blau-900)}
.kontakt-info a,.kontakt-info span{color:var(--grau-700);font-size:.95rem}

.kontakt-form{
  background:var(--weiss);border:1px solid var(--grau-200);
  border-radius:var(--radius);padding:32px 28px;box-shadow:var(--schatten);
}
.form-zeile{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.kontakt-form label{display:block;font-weight:600;font-size:.88rem;color:var(--blau-900);margin:0 0 6px}
.kontakt-form input,.kontakt-form textarea,.kontakt-form select{
  width:100%;padding:12px 14px;margin-bottom:18px;
  border:1px solid var(--grau-200);border-radius:10px;
  font:inherit;color:var(--grau-900);background:var(--grau-100);
}
.kontakt-form input:focus,.kontakt-form textarea:focus,.kontakt-form select:focus{
  outline:2px solid var(--blau-700);outline-offset:1px;background:#fff;
}
.kontakt-form .btn{width:100%;justify-content:center;border:0;cursor:pointer}
.form-hinweis{font-size:.8rem;color:var(--grau-500);margin-top:12px}

/* ===== Footer ===== */
.footer{background:var(--blau-900);color:#c4d4e6;padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer h4{color:#fff;font-size:1rem;margin-bottom:16px}
.footer p{font-size:.9rem}
.footer li{margin-bottom:9px}
.footer a{color:#c4d4e6;font-size:.92rem}
.footer a:hover{color:#fff}
.footer .logo-text strong{color:#fff}
.footer .logo-text span{color:#9db3c9}
.footer .logo{margin-bottom:18px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:18px 0;font-size:.85rem;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
}
.footer-bottom a{margin-left:18px}

/* ===== Unterseiten (Impressum/Datenschutz) ===== */
.seite-inhalt{max-width:820px;padding:64px 20px}
.seite-inhalt h1{color:var(--blau-900);font-size:2rem;margin-bottom:24px}
.seite-inhalt h2{color:var(--blau-900);font-size:1.25rem;margin:32px 0 10px}
.seite-inhalt h3{color:var(--blau-900);font-size:1.05rem;margin:22px 0 8px}
.seite-inhalt p,.seite-inhalt li{color:var(--grau-700);font-size:.97rem;margin-bottom:10px}
.seite-inhalt ul{list-style:disc;padding-left:22px}

/* ===== Responsive ===== */
@media (max-width:960px){
  .leistungen-grid{grid-template-columns:repeat(2,1fr)}
  .ablauf-grid{grid-template-columns:repeat(2,1fr)}
  .vorteile-wrap,.kontakt-wrap{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  .section{padding:56px 0}
  .nav{
    display:none;position:absolute;top:100%;left:0;right:0;
    background:var(--weiss);box-shadow:0 12px 24px rgba(11,42,74,.12);
    padding:12px 20px 20px;
  }
  .nav.offen{display:block}
  .nav ul{flex-direction:column;gap:0;align-items:stretch}
  .nav a{display:block;padding:12px 4px;border-bottom:1px solid var(--grau-200)}
  .nav-toggle{display:block}
  .header-cta .btn span{display:none}
  .header-cta .btn{padding:11px 13px}
  .topbar .container{justify-content:center}
  .topbar-links{display:none}
  .hero{padding:64px 0 72px}
  .form-zeile{grid-template-columns:1fr}
}
@media (max-width:520px){
  .leistungen-grid,.ablauf-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%;justify-content:center}
}