/* adblueoff.de – Blau/Weiß, mobile-first, hoher Kontrast */
:root{
  --blue-900:#08356e;
  --blue-700:#0b4fa2;
  --blue-600:#1462c4;
  --blue-100:#e8f1fb;
  --ink:#12222f;
  --muted:#4a5b68;
  --white:#ffffff;
  --bg-alt:#f2f6fb;
  --wa:#25d366;
  --wa-dark:#128c7e;
  --border:#d6e0ea;
  --radius:12px;
  --maxw:1120px;
  --focus:#ffb300;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  color:var(--ink);
  background:var(--white);
  line-height:1.6;
  font-size:17px;
  -webkit-text-size-adjust:100%;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue-700)}
h1,h2,h3{line-height:1.25;color:var(--blue-900);margin:0 0 .5em}
h1{font-size:1.9rem}
h2{font-size:1.55rem;margin-bottom:.4em}
h3{font-size:1.15rem}
p{margin:0 0 1rem}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--blue-900);color:#fff;padding:10px 16px;z-index:200}
.skip-link:focus{left:8px;top:8px}

:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  font-weight:700;text-decoration:none;cursor:pointer;
  padding:12px 18px;border-radius:var(--radius);border:2px solid transparent;
  min-height:48px;font-size:1rem;transition:background .15s,color .15s,transform .05s;
}
.btn:active{transform:translateY(1px)}
.btn-lg{padding:15px 26px;font-size:1.05rem}
.btn-whatsapp{background:var(--wa);color:#04371f}
.btn-whatsapp:hover{background:var(--wa-dark);color:#fff}
.btn-outline{background:#fff;color:var(--blue-700);border-color:var(--blue-700)}
.btn-outline:hover{background:var(--blue-100)}
.btn-phone{background:var(--blue-700);color:#fff}
.btn-phone:hover{background:var(--blue-900)}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding-top:12px;padding-bottom:12px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--blue-900)}
.brand-mark{display:inline-grid;place-items:center;width:38px;height:38px;background:var(--blue-700);color:#fff;border-radius:10px;font-weight:800;font-size:.95rem}
.brand-name{font-weight:800;font-size:1.15rem}
.brand-tld{color:var(--blue-600)}
.site-nav{display:none;gap:18px;margin-left:auto}
.site-nav a{text-decoration:none;color:var(--ink);font-weight:600}
.site-nav a:hover{color:var(--blue-700)}
.header-actions{display:flex;gap:8px;margin-left:auto;flex-wrap:wrap}
.header-actions .btn{padding:10px 14px;min-height:44px;font-size:.92rem}

/* Hero */
.hero{background:linear-gradient(160deg,var(--blue-900),var(--blue-600));color:#fff;padding:48px 0}
.hero h1{color:#fff}
.hero-lead{font-size:1.12rem;max-width:60ch;color:#eaf2fb}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}

/* Notices */
.notice{border-radius:var(--radius);padding:16px 18px;margin:22px 0;border-left:6px solid}
.notice-legal{background:#fff;color:var(--ink);border-left-color:#e0a800}
.notice-info{background:var(--blue-100);color:var(--ink);border-left-color:var(--blue-600)}

/* Sections */
.section{padding:52px 0}
.section-alt{background:var(--bg-alt)}
.section-lead{color:var(--muted);max-width:65ch}
.hint{color:var(--muted);font-style:italic}

/* Cards */
.cards{display:grid;gap:16px;grid-template-columns:1fr;margin-top:8px}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.section-alt .card{background:#fff}

/* Feature list */
.feature-list{list-style:none;padding:0;margin:8px 0 0;display:grid;gap:10px;grid-template-columns:1fr}
.feature-list li{position:relative;padding-left:30px}
.feature-list li::before{content:"";position:absolute;left:0;top:.55em;width:14px;height:8px;border-left:3px solid var(--wa-dark);border-bottom:3px solid var(--wa-dark);transform:rotate(-45deg)}

/* Steps */
.steps{list-style:none;counter-reset:s;padding:0;margin:0;display:grid;gap:14px}
.steps li{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:16px}
.step-no{flex:0 0 auto;width:36px;height:36px;display:grid;place-items:center;background:var(--blue-700);color:#fff;border-radius:50%;font-weight:800}
.steps h3{margin:.1em 0 .2em}
.steps p{margin:0;color:var(--muted)}

/* FAQ */
.faq{display:grid;gap:12px;margin-top:8px}
.faq details{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:0 18px}
.faq summary{cursor:pointer;font-weight:700;color:var(--blue-900);padding:16px 0;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;font-weight:800;color:var(--blue-600)}
.faq details[open] summary::after{content:"–"}
.faq details p{margin:0 0 16px;color:var(--muted)}

/* Contact */
.section-contact{background:var(--blue-100)}
.contact-grid{display:grid;gap:16px;grid-template-columns:1fr;margin-top:8px}
.contact-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px;text-align:center}
.privacy-hint{margin-top:22px;color:var(--muted);font-size:.95rem}

/* Footer */
.site-footer{background:var(--blue-900);color:#dbe7f5;padding:32px 0 20px}
.footer-inner{display:grid;gap:18px}
.footer-brand .brand-name{color:#fff}
.footer-brand p{color:#b8cbe2;margin:.4em 0 0;max-width:48ch}
.footer-nav{display:flex;flex-wrap:wrap;gap:18px}
.footer-nav a{color:#fff;text-decoration:none;font-weight:600}
.footer-nav a:hover{text-decoration:underline}
.footer-copy{margin-top:20px;border-top:1px solid rgba(255,255,255,.15);padding-top:14px;color:#b8cbe2}

/* Floating WhatsApp button */
.fab-whatsapp{
  position:fixed;right:16px;bottom:16px;z-index:120;
  display:inline-flex;align-items:center;gap:8px;
  background:var(--wa);color:#04371f;text-decoration:none;font-weight:800;
  padding:14px 18px;border-radius:50px;box-shadow:0 6px 20px rgba(0,0,0,.25);
}
.fab-whatsapp:hover{background:var(--wa-dark);color:#fff}
.fab-whatsapp span[aria-hidden]{font-size:1.2rem}

/* Legal pages */
.legal{padding:40px 0}
.legal h1{color:var(--blue-900)}
.legal h2{margin-top:1.4em;font-size:1.25rem}
.legal .placeholder{background:#fff3cd;border:1px dashed #e0a800;padding:2px 6px;border-radius:4px}
.legal address{font-style:normal}

/* Responsive */
@media (min-width:720px){
  h1{font-size:2.5rem}
  h2{font-size:2rem}
  .hero{padding:72px 0}
  .cards{grid-template-columns:repeat(2,1fr)}
  .feature-list{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:repeat(2,1fr)}
  .footer-inner{grid-template-columns:1fr auto;align-items:center}
}
@media (min-width:960px){
  .site-nav{display:flex}
  .cards{grid-template-columns:repeat(4,1fr)}
  .feature-list{grid-template-columns:repeat(3,1fr)}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important;animation:none!important}
}