/* ==========================================================================
   FES – Photovoltaik-Landingpage
   Stylesheet fuer index.html, datenschutz.html und impressum.html

   Aufbau:
     1. Design-Tokens (Farben, Schriften, Abstaende)
     2. Grundlagen und Typografie
     3. Kopfbereich und Navigation
     4. Hero-Bereich mit Kontaktformular
     5. Inhaltssektionen (Leistungen, Warum FES, Sparrechner, FAQ)
     6. Fussbereich
     7. Rechtstexte (Datenschutz / Impressum)
     8. Responsive Anpassungen (Tablet, Smartphone, Querformat)
     9. Dark Mode

   Hinweis: Es werden ausschliesslich Systemschriften verwendet.
   Es bestehen keine Verbindungen zu externen Servern.
   ========================================================================== */

:root{
    color-scheme:light dark;
    --navy:#0B2340;
    --navy-soft:#12335c;
    --blue:#0A9DD9;
    --blue-deep:#0678A6;
    --amber:#F5A623;
    --amber-deep:#D98A0F;
    --bg:#F6F9FC;
    --paper:#FFFFFF;
    --ink:#0B2340;
    --ink-soft:#4A5C73;
    --line:#DCE6EE;
    /* Textfarbe für Überschriften – im Dark Mode separat umgeschaltet.
       Bewusst getrennt von --navy, da --navy auch als dunkle
       Hintergrundfarbe (Hero, Footer, Sparrechner) dient. */
    --heading:#0B2340;
    --header-bg:rgba(246,249,252,.9);
    --surface-alt:#EEF4FA;
    --field-bg:#FFFFFF;
    --ok:#1FAA59;
    --radius:14px;
    --shadow:0 10px 30px -12px rgba(11,35,64,.18);
    /* Systemschriften: keine externen Anfragen, keine Cookies, sofort verfuegbar */
    --ff-display:'Segoe UI Semibold','Segoe UI',system-ui,-apple-system,'Helvetica Neue',Arial,sans-serif;
    --ff-body:system-ui,-apple-system,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  html,body{max-width:100%;overflow-x:hidden;}
  body{
    margin:0;
    font-family:var(--ff-body);
    color:var(--ink);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
    line-height:1.55;
  }
  h1,h2,h3,h4{font-family:var(--ff-display);margin:0 0 .5em;letter-spacing:-.01em;color:var(--heading);overflow-wrap:break-word;hyphens:auto;}
  p{margin:0 0 1em;overflow-wrap:break-word;}
  a{color:inherit;}
  img,svg{max-width:100%;display:block;}
  .wrap{max-width:1180px;margin:0 auto;padding:0 24px;}
  @media(max-width:480px){.wrap{padding:0 18px;}}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;
    color:var(--blue-deep);
    background:rgba(10,157,217,.09);
    padding:6px 14px;border-radius:999px;
    margin-bottom:16px;
  }
  .eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--amber);}

  /* ---------- Header ---------- */
  header{
    position:sticky;top:0;z-index:50;
    background:var(--header-bg);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
  }
  .headerbar{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;max-width:1180px;margin:0 auto;gap:16px;}
  .brand{display:flex;align-items:center;flex-shrink:0;text-decoration:none;line-height:0;}
  .brand-logo{height:33px;width:auto;display:block;}
  .foot-logo{height:auto;width:240px;max-width:100%;display:block;}
  nav.mainnav{display:flex;align-items:center;gap:28px;}
  nav.mainnav a{font-size:15px;font-weight:500;text-decoration:none;color:var(--ink-soft);}
  nav.mainnav a:hover{color:var(--heading);}
  .header-actions{display:flex;align-items:center;gap:18px;}
  /* Telefonlink: großzügiger Abstand zwischen Symbol und Nummer */
  .phonelink{display:flex;align-items:center;gap:12px;font-size:14px;font-weight:600;color:var(--heading);text-decoration:none;white-space:nowrap;}
  .phonelink svg{width:20px;height:20px;color:var(--blue);flex-shrink:0;}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-family:var(--ff-body);font-weight:700;font-size:15px;
    padding:13px 24px;border-radius:10px;border:none;cursor:pointer;
    text-decoration:none;transition:transform .15s ease, box-shadow .15s ease, background .15s ease;
    white-space:nowrap;min-height:46px;-webkit-tap-highlight-color:transparent;
  }
  .btn-primary{background:var(--amber);color:var(--navy);box-shadow:0 8px 20px -8px rgba(245,166,35,.65);}
  .btn-primary:hover{transform:translateY(-1px);background:var(--amber-deep);}
  .btn-outline{background:transparent;color:var(--heading);border:1.5px solid var(--line);}
  .btn-outline:hover{border-color:var(--blue);color:var(--blue-deep);}
  .btn-small{padding:9px 16px;font-size:13.5px;border-radius:8px;min-height:40px;}
  .navcta{display:none;}
  @media(min-width:760px){.navcta{display:inline-flex;}}
  nav.mainnav{display:none;}
  @media(min-width:900px){nav.mainnav{display:flex;}}
  .header-actions{display:none;}
  @media(min-width:900px){.header-actions{display:flex;}}

  /* Mobile header controls */
  .header-mobile-actions{display:flex;align-items:center;gap:6px;}
  @media(min-width:900px){.header-mobile-actions{display:none;}}
  .icon-link{
    display:flex;align-items:center;justify-content:center;
    width:44px;height:44px;border-radius:10px;color:var(--heading);
    -webkit-tap-highlight-color:transparent;
  }
  .icon-link svg{width:20px;height:20px;}
  .nav-toggle{
    display:flex;align-items:center;justify-content:center;
    width:44px;height:44px;border-radius:10px;border:1.5px solid var(--line);
    background:var(--paper);color:var(--heading);cursor:pointer;flex-shrink:0;
    -webkit-tap-highlight-color:transparent;
  }
  .nav-toggle svg{width:20px;height:20px;}
  .nav-toggle .ic-close{display:none;}
  .nav-toggle[aria-expanded="true"] .ic-burger{display:none;}
  .nav-toggle[aria-expanded="true"] .ic-close{display:block;}

  .mobile-nav{
    display:none;flex-direction:column;gap:4px;
    background:var(--paper);border-top:1px solid var(--line);
    padding:10px 20px 22px;
  }
  .mobile-nav.open{display:flex;}
  @media(min-width:900px){.mobile-nav{display:none !important;}}
  .mobile-nav nav{display:flex;flex-direction:column;}
  .mobile-nav nav a{
    padding:13px 4px;font-size:16px;font-weight:600;color:var(--heading);
    text-decoration:none;border-bottom:1px solid var(--line);min-height:44px;display:flex;align-items:center;
  }
  .mobile-nav > .phonelink{padding:14px 4px;font-size:15.5px;justify-content:center;color:var(--heading);}
  .mobile-nav > .btn{margin-top:6px;min-height:48px;}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;overflow:hidden;
    background:radial-gradient(120% 100% at 85% -10%, #123a63 0%, var(--navy) 55%, #081a33 100%);
    color:#fff;padding:28px 0 56px;
  }
  .hero::after{
    content:"";position:absolute;inset:0;
    background:
      radial-gradient(600px 300px at 12% 100%, rgba(10,157,217,.28), transparent 70%),
      radial-gradient(500px 260px at 95% 10%, rgba(245,166,35,.22), transparent 70%);
    pointer-events:none;
  }
  .hero-grid{position:relative;display:grid;grid-template-columns:1fr;gap:36px;align-items:start;}
  @media(min-width:980px){
    .hero-grid{grid-template-columns:.92fr 1.08fr;align-items:center;gap:52px;}
    .hero-pitch{order:1;}
    .hero-formcol{order:2;}
  }
  .hero-formcol{width:100%;}
  .hero-pitch .phonelink{display:inline-flex;}
  .hero h1{color:#fff;font-size:clamp(30px,4.6vw,46px);line-height:1.08;margin-bottom:18px;}
  .hero h1 span{color:var(--amber);}
  .hero-sub{color:#C9D8E8;font-size:17px;max-width:52ch;margin-bottom:32px;}
  .hero-trust{display:flex;flex-wrap:wrap;gap:28px;padding-top:28px;border-top:1px solid rgba(255,255,255,.14);}
  .hero-trust div{min-width:110px;}
  .hero-trust b{display:block;font-family:var(--ff-display);font-size:26px;color:#fff;}
  .hero-trust span{font-size:13px;color:#9FB3C8;}

  /* ---------- Sections ---------- */
  section{padding:88px 0;}
  .section-head{max-width:640px;margin-bottom:48px;}
  .section-head h2{font-size:clamp(26px,3.4vw,36px);}
  .section-head p{color:var(--ink-soft);font-size:16.5px;}
  .center{text-align:center;margin-left:auto;margin-right:auto;}

  /* Services */
  .services-grid{display:grid;grid-template-columns:1fr;gap:20px;}
  @media(min-width:680px){.services-grid{grid-template-columns:1fr 1fr;}}
  @media(min-width:1040px){.services-grid{grid-template-columns:repeat(4,1fr);}}
  .service-card{
    background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
    padding:26px;transition:box-shadow .2s ease, transform .2s ease;
  }
  .service-card:hover{box-shadow:var(--shadow);transform:translateY(-3px);}
  .service-ico{width:46px;height:46px;border-radius:11px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;}
  .service-ico svg{width:23px;height:23px;}
  /* Icon-Farbakzente je Leistung */
  .fi-pv{color:var(--amber-deep);}
  .fi-batt{color:var(--ok);}
  .fi-wb{color:var(--blue-deep);}
  .service-card h3{font-size:18px;margin-bottom:8px;}
  .service-card p{color:var(--ink-soft);font-size:14.5px;margin-bottom:0;}

  /* ---------- Form ---------- */
  .form-shell{
    max-width:720px;margin:0 auto;
    background:var(--paper);border:1px solid var(--line);border-radius:20px;
    box-shadow:var(--shadow);overflow:hidden;
    /* WICHTIG: Das Formular liegt im dunklen Hero-Bereich, der seine
       Textfarbe auf Weiß setzt. Ohne diesen Reset erben Kindelemente
       ohne eigene Farbangabe dieses Weiss und waeren auf dem weissen
       Formular unsichtbar. Alle Formularfarben leiten sich hiervon ab. */
    color:var(--ink);
  }
  .form-top{padding:30px 30px 0;}
  .form-top h2{font-size:24px;margin-bottom:6px;}
  .form-top p{color:var(--ink-soft);font-size:14.5px;}

  /* Stepper */
  .stepper{padding:22px 30px 0;}
  .stepper-track{position:relative;height:4px;background:var(--line);border-radius:4px;margin-bottom:10px;overflow:hidden;}
  .stepper-fill{position:absolute;left:0;top:0;height:100%;width:16.66%;background:linear-gradient(90deg,var(--blue),var(--amber));border-radius:4px;transition:width .35s ease;}
  .stepper-labels{display:flex;justify-content:space-between;font-size:11px;color:var(--ink-soft);font-weight:600;text-transform:uppercase;letter-spacing:.03em;}
  .stepper-labels span{opacity:.45;transition:opacity .2s ease;}
  .stepper-labels span.active{opacity:1;color:var(--blue-deep);}
  @media(max-width:420px){
    .stepper-labels span{display:none;}
    .stepper-labels span.active{display:block;font-size:12px;}
  }

  .form-body{padding:26px 30px 30px;}
  .fstep{display:none;animation:fadeIn .35s ease;}
  .fstep.active{display:block;}
  @keyframes fadeIn{from{opacity:0;transform:translateY(6px);}to{opacity:1;transform:translateY(0);}}
  .fstep h3{font-size:19px;margin-bottom:4px;}
  .fstep .hint{color:var(--ink-soft);font-size:13.5px;margin-bottom:22px;}

  .option-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
  @media(max-width:480px){.option-grid{grid-template-columns:1fr;}}
  .option-card{
    position:relative;border:1.5px solid var(--line);border-radius:12px;padding:16px;
    cursor:pointer;display:flex;gap:12px;align-items:flex-start;transition:border-color .15s ease, background .15s ease;
  }
  .option-card:hover{border-color:var(--blue);}
  .option-card input{position:absolute;opacity:0;width:0;height:0;}
  .option-card .oc-ico{width:34px;height:34px;border-radius:8px;background:var(--bg);display:flex;align-items:center;justify-content:center;flex-shrink:0;}
  .option-card .oc-ico svg{width:17px;height:17px;color:var(--blue-deep);}
  .option-card b{display:block;font-size:14.5px;color:var(--heading);}
  .option-card small{color:var(--ink-soft);font-size:12.5px;}
  .option-card input:checked ~ .oc-check{opacity:1;transform:scale(1);}
  .option-card:has(input:checked){border-color:var(--blue);background:rgba(10,157,217,.06);}
  .oc-check{
    position:absolute;top:12px;right:12px;width:18px;height:18px;border-radius:5px;
    background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;
    opacity:0;transform:scale(.6);transition:all .15s ease;
  }
  .oc-check svg{width:11px;height:11px;}

  .field{margin-bottom:16px;}
  .field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:6px;color:var(--heading);}
  .field .opt{font-weight:400;color:var(--ink-soft);}
  .field input[type=text],.field input[type=tel],.field input[type=email],.field textarea{
    width:100%;border:1.5px solid var(--line);border-radius:10px;padding:13px 14px;
    font-family:var(--ff-body);font-size:16px;color:var(--ink);background:var(--field-bg);
    transition:border-color .15s ease;
  }
  .field input:focus,.field textarea:focus{outline:none;border-color:var(--blue);}
  .field input::placeholder,.field textarea::placeholder{color:#617386;opacity:1;}
  .field textarea{min-height:110px;resize:vertical;}
  .field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
  @media(max-width:480px){.field-row{grid-template-columns:1fr;}}

  .checkline{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-soft);margin-top:6px;}
  .checkline input{margin-top:3px;}
  .checkline a{color:var(--blue-deep);text-decoration:underline;}

  .form-nav{display:flex;justify-content:space-between;align-items:center;margin-top:26px;gap:12px;}
  .form-nav .spacer{flex:1;}
  .err{color:#C0392B;font-size:12.5px;margin-top:8px;display:none;}
  .err.show{display:block;}

  /* Summary */
  .summary-list{border:1px solid var(--line);border-radius:12px;overflow:hidden;margin-bottom:20px;}
  .summary-row{display:flex;justify-content:space-between;gap:16px;padding:12px 16px;font-size:13.5px;border-bottom:1px solid var(--line);}
  .summary-row:last-child{border-bottom:none;}
  .summary-row dt{color:var(--ink-soft);}
  .summary-row dd{margin:0;font-weight:600;text-align:right;max-width:60%;color:var(--heading);}

  /* Success */
  .success{display:none;text-align:center;padding:50px 30px 40px;}
  .success.active{display:block;}
  .success-ico{width:64px;height:64px;border-radius:50%;background:rgba(31,170,89,.12);color:var(--ok);display:flex;align-items:center;justify-content:center;margin:0 auto 20px;}
  .success-ico svg{width:30px;height:30px;}
  .success h3{font-size:22px;}
  .success p{color:var(--ink-soft);max-width:44ch;margin:0 auto 22px;}

  /* FAQ */
  .faq-item{border-bottom:1px solid var(--line);padding:18px 0;}
  /* .faq-q ist eine echte Schaltflaeche (Tastatur- und Screenreader-
     bedienbar); die Button-Voreinstellungen des Browsers werden hier
     zurueckgesetzt, damit die Darstellung unveraendert bleibt. */
  .faq-q{
    display:flex;justify-content:space-between;align-items:center;gap:12px;
    width:100%;margin:0;padding:0;background:none;border:none;text-align:left;
    font-family:inherit;line-height:inherit;
    cursor:pointer;font-weight:600;font-size:15.5px;color:var(--heading);
  }
  .faq-q svg{width:16px;height:16px;transition:transform .2s ease;flex-shrink:0;color:var(--blue);}
  .faq-item.open .faq-q svg{transform:rotate(45deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;}
  .faq-item.open .faq-a{max-height:200px;}
  .faq-a p{padding-top:12px;color:var(--ink-soft);font-size:14.5px;margin-bottom:0;}

  /* Footer */
  footer{background:var(--navy);color:#C9D8E8;padding:56px 0 26px;font-size:14px;}
  .footgrid{display:grid;grid-template-columns:1fr;gap:36px;margin-bottom:40px;}
  @media(min-width:760px){.footgrid{grid-template-columns:1.3fr 1fr 1fr;}}
  footer h5{color:#fff;font-family:var(--ff-display);font-size:14px;text-transform:uppercase;letter-spacing:.05em;margin-bottom:14px;}
  footer a{color:#C9D8E8;text-decoration:none;}
  footer a:hover{color:#fff;}
  footer ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:9px;}
  .foot-brand{display:block;margin-bottom:16px;}
  .footbottom{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:12.5px;color:#8FA4BA;}
  .footbottom a{color:#8FA4BA;}


  ::selection{background:var(--amber);color:var(--navy);}
  @media (prefers-reduced-motion: reduce){
    *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
    html{scroll-behavior:auto;}
  }
  :focus-visible{outline:2.5px solid var(--blue);outline-offset:2px;}
  /* Die Eingabeelemente der Auswahlkarten sind unsichtbar – der
     Tastaturfokus wird deshalb auf der Karte selbst angezeigt. */
  .option-card:has(input:focus-visible){outline:2.5px solid var(--blue);outline-offset:2px;}

  /* ---------- Scroll reveal ---------- */
  .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1);}
  .reveal.in-view{opacity:1;transform:translateY(0);}
  .reveal-stagger.in-view .r-item:nth-child(1){transition-delay:.03s;}
  .reveal-stagger.in-view .r-item:nth-child(2){transition-delay:.09s;}
  .reveal-stagger.in-view .r-item:nth-child(3){transition-delay:.15s;}
  .reveal-stagger.in-view .r-item:nth-child(4){transition-delay:.21s;}
  .r-item{opacity:0;transform:translateY(18px);transition:opacity .6s ease, transform .6s ease;}
  .reveal-stagger.in-view .r-item{opacity:1;transform:translateY(0);}

  /* ---------- Premium accents ---------- */
  .kicker-line{width:46px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--blue),var(--amber));margin-bottom:18px;}
  .center .kicker-line{margin-left:auto;margin-right:auto;}
  .service-card{position:relative;}
  .service-card::before{
    content:"";position:absolute;inset:0;border-radius:var(--radius);padding:1px;
    background:linear-gradient(135deg,rgba(10,157,217,0), rgba(245,166,35,0));
    opacity:0;transition:opacity .25s ease;pointer-events:none;
  }
  .service-card:hover::before{opacity:1;background:linear-gradient(135deg,rgba(10,157,217,.35), rgba(245,166,35,.35));-webkit-mask:linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);-webkit-mask-composite:xor;mask-composite:exclude;}

  /* ---------- Stat counters ---------- */
  .hero-trust b{font-variant-numeric:tabular-nums;}

  .team-badge{display:flex;align-items:center;gap:14px;margin-bottom:26px;}
  .team-badge img{width:64px;height:64px;border-radius:50%;object-fit:cover;border:2.5px solid rgba(245,166,35,.7);flex-shrink:0;}
  .team-badge strong{display:block;color:#fff;font-size:14.5px;}
  .team-badge span{color:#9FB3C8;font-size:13px;}

  /* ---------- Sticky mobile CTA ---------- */
  .sticky-cta{
    position:fixed;left:0;right:0;bottom:0;z-index:60;
    display:flex;gap:10px;align-items:center;
    background:rgba(11,35,64,.97);backdrop-filter:blur(8px);
    padding:12px 16px;border-top:1px solid rgba(255,255,255,.1);
    transform:translateY(110%);transition:transform .3s ease;
  }
  .sticky-cta.show{transform:translateY(0);}
  .sticky-cta span{color:#fff;font-size:13px;font-weight:600;flex:1;}
  .sticky-cta .btn{flex-shrink:0;}
  @media(min-width:900px){.sticky-cta{display:none;}}

  /* ---------- Warum FES (Werte) ---------- */
  .value-section{background:linear-gradient(180deg,var(--bg) 0%, var(--surface-alt) 100%);}
  .value-grid{display:grid;grid-template-columns:1fr;gap:18px;}
  @media(min-width:680px){.value-grid{grid-template-columns:1fr 1fr;}}
  @media(min-width:1040px){.value-grid{grid-template-columns:repeat(3,1fr);}}
  .value-card{
    background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
    padding:24px;display:flex;gap:16px;align-items:flex-start;
    transition:box-shadow .2s ease, transform .2s ease, border-color .2s ease;
  }
  .value-card:hover{box-shadow:var(--shadow);transform:translateY(-3px);border-color:transparent;}
  .value-ico{width:42px;height:42px;border-radius:10px;background:rgba(10,157,217,.1);color:var(--blue-deep);display:flex;align-items:center;justify-content:center;flex-shrink:0;}
  .value-ico svg{width:21px;height:21px;}
  .value-card h3{font-size:16px;margin-bottom:6px;}
  .value-card p{color:var(--ink-soft);font-size:14px;margin-bottom:0;}
  .quote-card{
    margin-top:44px;background:var(--navy);border-radius:20px;padding:32px 34px;
    display:flex;flex-direction:column;gap:14px;position:relative;overflow:hidden;
  }
  .quote-card::before{content:"“";position:absolute;top:-10px;left:20px;font-family:var(--ff-display);font-size:110px;color:rgba(255,255,255,.06);line-height:1;}
  .quote-card p{position:relative;color:#fff;font-family:var(--ff-display);font-size:clamp(17px,2vw,21px);line-height:1.45;margin:0;}
  .quote-card cite{position:relative;color:#9FB3C8;font-style:normal;font-size:13.5px;display:flex;align-items:center;gap:8px;}
  .stars{color:var(--amber);letter-spacing:1px;font-size:13px;}

  .gallery-strip{display:grid;grid-template-columns:1fr;gap:14px;margin-top:44px;}
  @media(min-width:680px){.gallery-strip{grid-template-columns:repeat(3,1fr);}}
  .gallery-item{margin:0;border-radius:16px;overflow:hidden;box-shadow:var(--shadow);aspect-ratio:16/10;}
  .gallery-item img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s ease;}
  .gallery-item:hover img{transform:scale(1.06);}

  /* ---------- Sparrechner (Savings slider) ---------- */
  .calc-section{background:var(--paper);}
  .calc-shell{
    max-width:900px;margin:0 auto;
    background:linear-gradient(180deg,#0E2A4C 0%, var(--navy) 100%);
    border-radius:22px;padding:38px 30px 34px;color:#fff;
    box-shadow:var(--shadow);position:relative;overflow:hidden;
  }
  .calc-shell::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background:radial-gradient(420px 220px at 100% 0%, rgba(245,166,35,.18), transparent 70%),
               radial-gradient(360px 200px at 0% 100%, rgba(10,157,217,.22), transparent 70%);
  }
  .calc-head{position:relative;margin-bottom:26px;}
  .calc-head h3{color:#fff;font-size:22px;margin-bottom:6px;}
  .calc-head p{color:#B9CBDF;font-size:14px;margin-bottom:0;max-width:52ch;}
  .calc-row{position:relative;margin-bottom:30px;}
  .calc-label-row{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:14px;}
  .calc-label-row label{font-size:13.5px;font-weight:600;color:#C9D8E8;text-transform:uppercase;letter-spacing:.04em;}
  .calc-value{font-family:var(--ff-display);font-size:24px;font-weight:700;color:var(--amber);}
  input[type=range]{
    -webkit-appearance:none;width:100%;height:6px;border-radius:6px;
    background:linear-gradient(90deg,var(--blue),var(--amber));outline:none;cursor:pointer;
  }
  input[type=range]::-webkit-slider-thumb{
    -webkit-appearance:none;width:26px;height:26px;border-radius:50%;
    background:#fff;border:4px solid var(--amber);cursor:pointer;box-shadow:0 4px 14px rgba(0,0,0,.35);
    transition:transform .15s ease;
  }
  input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.08);}
  input[type=range]::-moz-range-thumb{
    width:26px;height:26px;border-radius:50%;background:#fff;border:4px solid var(--amber);cursor:pointer;box-shadow:0 4px 14px rgba(0,0,0,.35);
  }
  .calc-scale{display:flex;justify-content:space-between;font-size:11.5px;color:#7F97B0;margin-top:8px;}

  .calc-results{position:relative;display:grid;grid-template-columns:1fr;gap:24px;}
  @media(min-width:720px){.calc-results{grid-template-columns:1.1fr .9fr;}}

  .calc-bars{display:flex;align-items:flex-end;gap:26px;height:150px;padding-top:10px;}
  .calc-bar-col{display:flex;flex-direction:column;align-items:center;gap:10px;flex:1;height:100%;justify-content:flex-end;}
  .calc-bar{width:100%;max-width:64px;border-radius:8px 8px 0 0;transition:height .5s cubic-bezier(.2,.7,.2,1);position:relative;}
  .calc-bar.old{background:linear-gradient(180deg,#4A6A8C,#2B4664);}
  .calc-bar.new{background:linear-gradient(180deg,var(--amber),var(--amber-deep));}
  .calc-bar-amt{position:absolute;top:-24px;left:0;right:0;text-align:center;font-size:13px;font-weight:700;color:#fff;}
  .calc-bar-label{font-size:12px;color:#B9CBDF;text-align:center;}

  .calc-stats{display:flex;flex-direction:column;gap:14px;justify-content:center;}
  .calc-stat{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:16px 18px;}
  .calc-stat b{display:block;font-family:var(--ff-display);font-size:26px;color:var(--amber);}
  .calc-stat span{font-size:12.5px;color:#B9CBDF;}
  .calc-note{position:relative;font-size:11.5px;color:#7F97B0;margin-top:22px;line-height:1.5;}

  /* ============================================================
     RESPONSIVE REFINEMENTS
     Zentral gebündelt: Tablet (<=900px), Smartphone (<=600px),
     Kleingeräte (<=380px) und Querformat.
     Die Desktop-Darstellung bleibt unverändert.
     ============================================================ */

  /* ---------- Tablet ---------- */
  @media(max-width:900px){
    section{padding:60px 0;}
    .headerbar{padding:12px 20px;}
    .brand-logo{height:30px;}
    .calc-shell{padding:30px 24px 28px;}
    .quote-card{padding:28px 26px;}
    .form-shell{max-width:100%;}
  }

  /* ---------- Smartphone ---------- */
  @media(max-width:600px){
    section{padding:46px 0;}

    /* Kopfbereich */
    .brand-logo{height:27px;}
    .foot-logo{width:200px;}

    /* Hero */
    .hero{padding:20px 0 40px;}
    .hero-grid{gap:30px;}
    .hero h1{font-size:clamp(26px,7.4vw,34px);line-height:1.14;}
    .hero-sub{font-size:15.5px;margin-bottom:24px;}
    .hero-trust{gap:18px 22px;padding-top:22px;}
    .hero-trust div{min-width:calc(50% - 11px);}
    .hero-trust b{font-size:23px;}
    .team-badge{margin-bottom:22px;}
    .team-badge img{width:56px;height:56px;}

    /* Formular */
    .form-shell{border-radius:16px;}
    .form-top{padding:22px 18px 0;}
    .form-top h2{font-size:20px;}
    .stepper{padding:18px 18px 0;}
    .form-body{padding:20px 18px 22px;}
    .fstep h3{font-size:17.5px;}
    .fstep .hint{font-size:13px;margin-bottom:18px;}
    .option-card{padding:14px;min-height:60px;}
    .option-card b{font-size:15px;}
    .form-nav{gap:10px;}
    .form-nav .btn{flex:1;padding:12px 14px;font-size:14.5px;min-height:48px;}
    .success{padding:38px 20px 32px;}

    /* Inhaltssektionen */
    .section-head{margin-bottom:32px;}
    .section-head p{font-size:15.5px;}
    .service-card,.value-card{padding:20px;}
    .value-card{gap:14px;}
    .gallery-strip{gap:12px;margin-top:32px;}
    .quote-card{padding:24px 22px;margin-top:32px;}

    /* Sparrechner */
    .calc-shell{padding:24px 18px 26px;border-radius:16px;}
    .calc-head h3{font-size:19px;}
    .calc-value{font-size:21px;}
    .calc-results{gap:20px;}
    .calc-bars{height:130px;gap:18px;}
    .calc-stat{padding:14px 16px;}
    .calc-stat b{font-size:23px;}
    input[type=range]{height:10px;}
    input[type=range]::-webkit-slider-thumb{width:30px;height:30px;}
    input[type=range]::-moz-range-thumb{width:30px;height:30px;}

    /* FAQ – größere Tippfläche */
    .faq-item{padding:6px 0;}
    .faq-q{padding:14px 0;min-height:48px;font-size:15px;gap:14px;}
    .faq-item.open .faq-a{max-height:340px;}

    /* Footer */
    footer{padding:44px 0 100px;}
    .footgrid{gap:28px;margin-bottom:30px;}
    .footbottom{flex-direction:column;gap:8px;}
    .footbottom span{line-height:1.6;}

    /* Zusammenfassung: Label über Wert statt nebeneinander */
    .summary-row{flex-direction:column;gap:3px;padding:11px 14px;}
    .summary-row dd{text-align:left;max-width:100%;}
  }

  /* ---------- Sehr kleine Geräte ---------- */
  @media(max-width:380px){
    .wrap{padding:0 14px;}
    .headerbar{padding:10px 14px;gap:8px;}
    .brand-logo{height:24px;}
    .foot-logo{width:175px;}
    .hero h1{font-size:25px;}
    .hero-trust div{min-width:100%;}
    .form-top,.stepper{padding-left:15px;padding-right:15px;}
    .form-body{padding-left:15px;padding-right:15px;}
    .calc-shell{padding:20px 15px 22px;}
    .calc-bars{height:112px;gap:14px;}
    .form-nav{flex-wrap:wrap;}
  }

  /* ---------- Querformat auf niedrigen Displays ---------- */
  @media(max-height:520px) and (orientation:landscape){
    section{padding:34px 0;}
    header{position:static;}
    .hero{padding:18px 0 30px;}
    .mobile-nav{max-height:70vh;overflow-y:auto;}
    .sticky-cta{display:none;}
  }

  /* ---------- Sticky-CTA: Platz & Safe-Area (iPhone) ---------- */
  @media(max-width:900px){
    body{padding-bottom:0;}
    .sticky-cta{
      padding-bottom:calc(12px + env(safe-area-inset-bottom));
      padding-left:calc(16px + env(safe-area-inset-left));
      padding-right:calc(16px + env(safe-area-inset-right));
    }
    .sticky-cta .btn{min-height:44px;}
  }

  /* ---------- Zeigegeräte ohne Hover (Touch) ---------- */
  @media(hover:none){
    .service-card:hover,.value-card:hover{transform:none;box-shadow:none;}
    .gallery-item:hover img{transform:none;}
    .btn-primary:hover{transform:none;}
  }  /* ============================================================
     DARK MODE
     Wird bei dunkler Systemdarstellung aktiv. Statt dunkelblauer
     Schrift auf dunklem Grund werden Überschriften hell gesetzt.
     Die Markenfarben (FES-Blau, Amber) werden für dunkle Flächen
     aufgehellt, damit sie kontrastreich bleiben.
     ============================================================ */
  @media (prefers-color-scheme: dark){
    :root{
      --bg:#0A1727;              /* tiefes Marineblau statt Schwarz */
      --paper:#132741;           /* Karten- und Formularflächen     */
      --surface-alt:#0E1E33;
      --field-bg:#0E2039;
      --ink:#E6EFF8;
      --ink-soft:#A9BDD3;
      --line:#2A3F5C;
      --heading:#FFFFFF;         /* Überschriften: maximaler Kontrast */
      --blue:#38B6EC;            /* FES-Blau aufgehellt             */
      --blue-deep:#5CC6F5;
      --ok:#3ED67E;
      --header-bg:rgba(10,23,39,.92);
      --shadow:0 10px 30px -12px rgba(0,0,0,.6);
    }

    /* Dunkle Flächen vom Hintergrund abheben */
    footer,.quote-card,.calc-shell{border:1px solid rgba(255,255,255,.10);}
    footer{border-left:none;border-right:none;border-bottom:none;}

    /* Aktive Auswahl deutlicher markieren */
    .option-card:has(input:checked){background:rgba(56,182,236,.16);}
    .eyebrow{background:rgba(56,182,236,.14);}
    .value-ico{background:rgba(56,182,236,.14);}

    /* Meldungen und Hinweise kontrastreich halten */
    .err{color:#FF9A8F;}

    /* Leistungs-Icons aufhellen */
    .fi-pv{color:#F5A623;}
    .fi-batt{color:#3ED67E;}
    .fi-wb{color:#5CC6F5;}

    /* Eingabefelder */
    .field input::placeholder,.field textarea::placeholder{color:#8FA4BC;}
    .nav-toggle{border-color:var(--line);}
  }

/* ==========================================================================
   7. RECHTSTEXTE (datenschutz.html / impressum.html)
   ========================================================================== */
.legal-page{background:var(--bg);min-height:100vh;}
.legal-wrap{max-width:820px;margin:0 auto;padding:56px 24px 80px;}
.legal-wrap h1{font-size:clamp(26px,4vw,38px);margin-bottom:8px;}
.legal-lead{color:var(--ink-soft);font-size:16px;margin-bottom:36px;}
.legal-wrap h2{font-size:20px;margin:38px 0 10px;padding-top:20px;border-top:1px solid var(--line);}
.legal-wrap h2:first-of-type{border-top:none;padding-top:0;}
.legal-wrap h3{font-size:16.5px;margin:22px 0 6px;}
.legal-wrap p,.legal-wrap li{color:var(--ink);font-size:15.5px;line-height:1.7;}
.legal-wrap ul,.legal-wrap ol{padding-left:22px;margin:0 0 16px;}
.legal-wrap li{margin-bottom:7px;}
.legal-wrap a{color:var(--blue-deep);text-decoration:underline;overflow-wrap:break-word;}
.legal-wrap dl{margin:0 0 16px;}
.legal-wrap dt{font-weight:600;color:var(--heading);margin-top:10px;}
.legal-wrap dd{margin:0 0 4px;color:var(--ink);}

/* Deutlich markierte Platzhalter – vor Veroeffentlichung ersetzen */
.platzhalter{
  display:inline-block;background:#FFE9B8;color:#6B4E05;
  border:1px dashed #C89B22;border-radius:5px;
  padding:1px 7px;font-weight:700;font-size:.94em;
}
.hinweis-box{
  background:#FFF6E5;border:1px solid #F0D9A6;border-left:4px solid var(--amber);
  border-radius:10px;padding:16px 18px;margin:0 0 30px;
}
.hinweis-box p{margin:0;color:#7A5A12;font-size:14.5px;}
.hinweis-box strong{color:#5E4409;}

.legal-back{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:26px;
  font-size:14.5px;font-weight:600;color:var(--blue-deep);text-decoration:none;
  min-height:44px;
}
.legal-back svg{width:16px;height:16px;}
.legal-topbar{background:var(--header-bg);border-bottom:1px solid var(--line);}
.legal-topbar .headerbar{justify-content:flex-start;}

@media(max-width:600px){
  .legal-wrap{padding:32px 18px 60px;}
  .legal-wrap h2{font-size:18.5px;margin:30px 0 8px;}
  .legal-wrap p,.legal-wrap li{font-size:15px;}
}
@media (prefers-color-scheme: dark){
  .platzhalter{background:rgba(245,166,35,.18);color:#F3C77A;border-color:rgba(245,166,35,.5);}
  .hinweis-box{background:rgba(245,166,35,.10);border-color:rgba(245,166,35,.3);}
  .hinweis-box p{color:#F3C77A;}
  .hinweis-box strong{color:#FFD98A;}
}

/* ==========================================================================
   FORMULAR-RUECKMELDUNG (Erfolg / Fehler nach dem Absenden)
   ========================================================================== */
.form-alert{
  display:none;align-items:flex-start;gap:12px;
  border-radius:12px;padding:16px 18px;margin-bottom:18px;
  font-size:14.5px;line-height:1.55;
}
.form-alert.show{display:flex;}
.form-alert svg{width:20px;height:20px;flex-shrink:0;margin-top:1px;}
.form-alert-error{background:#FDEDEC;border:1px solid #F5C6C2;color:#9B2C22;}
.form-alert-error a{color:#9B2C22;font-weight:600;}
@media (prefers-color-scheme: dark){
  .form-alert-error{background:rgba(255,120,105,.12);border-color:rgba(255,120,105,.4);color:#FF9A8F;}
  .form-alert-error a{color:#FF9A8F;}
}
.btn[disabled]{opacity:.65;cursor:not-allowed;}
.btn[disabled]:hover{transform:none;}

/* ==========================================================================
   HONEYPOT (Spamschutz)
   Fuer Menschen unsichtbar, bleibt fuer Bots im Quelltext auffindbar.
   Bewusst nicht display:none, da manche Bots solche Felder ueberspringen.
   ========================================================================== */
.hp-field{
  position:absolute !important;
  left:-9999px !important;
  top:auto !important;
  width:1px !important;
  height:1px !important;
  overflow:hidden !important;
}

/* ==========================================================================
   COOKIE-BANNER
   Erscheint nur, wenn in tracking.js mindestens eine ID hinterlegt ist.
   Ablehnen ist genauso leicht erreichbar wie Zustimmen (DSGVO-Anforderung).
   ========================================================================== */
.cookie-banner{
  position:fixed;left:0;right:0;bottom:0;z-index:200;
  background:var(--paper);border-top:1px solid var(--line);
  box-shadow:0 -8px 30px -12px rgba(11,35,64,.25);
  transform:translateY(110%);transition:transform .3s ease;
  padding-bottom:env(safe-area-inset-bottom);
}
.cookie-banner.show{transform:translateY(0);}
.cookie-inner{
  max-width:1180px;margin:0 auto;padding:18px 24px;
  display:flex;align-items:center;gap:24px;flex-wrap:wrap;
}
.cookie-text{flex:1 1 420px;min-width:0;}
.cookie-text strong{display:block;font-family:var(--ff-display);font-size:15.5px;color:var(--heading);margin-bottom:4px;}
.cookie-text p{margin:0;font-size:13.5px;line-height:1.55;color:var(--ink-soft);}
.cookie-text a{color:var(--blue-deep);text-decoration:underline;}
.cookie-actions{display:flex;gap:10px;flex-shrink:0;}
.cookie-actions .btn{min-height:44px;}

@media(max-width:700px){
  .cookie-inner{padding:16px 18px;gap:14px;}
  .cookie-text{flex:1 1 100%;}
  .cookie-actions{width:100%;}
  .cookie-actions .btn{flex:1;padding:12px 10px;}
}
/* Wenn das Banner sichtbar ist, die mitlaufende Schaltflaeche anheben */
.cookie-banner.show ~ .sticky-cta{bottom:112px;}
@media(max-width:700px){.cookie-banner.show ~ .sticky-cta{bottom:150px;}}

/* ==========================================================================
   LADEANIMATION IM ABSENDE-BUTTON
   ========================================================================== */
.btn-spinner{
  width:16px;height:16px;flex-shrink:0;
  border:2px solid currentColor;border-right-color:transparent;
  border-radius:50%;display:inline-block;
  animation:btnSpin .7s linear infinite;
}
@keyframes btnSpin{to{transform:rotate(360deg);}}
.btn.is-loading{pointer-events:none;opacity:.85;}

/* Feldbezogene Fehlermarkierung */
.field.has-error input,.field.has-error textarea{
  border-color:#C0392B;background:rgba(192,57,43,.04);
}
.field-msg{display:none;margin-top:5px;font-size:12.5px;color:#C0392B;}
.field.has-error .field-msg{display:block;}
.checkline.has-error span{color:#C0392B;}
@media (prefers-color-scheme: dark){
  .field.has-error input,.field.has-error textarea{border-color:#FF9A8F;background:rgba(255,154,143,.07);}
  .field-msg,.checkline.has-error span{color:#FF9A8F;}
}


/* ==========================================================================
   DANKE-SEITE
   ========================================================================== */
.danke-page{
  min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(120% 100% at 80% -10%, #123a63 0%, var(--navy) 55%, #081a33 100%);
  padding:40px 20px;
}
.danke-card{
  max-width:560px;width:100%;background:var(--paper);
  border-radius:22px;padding:48px 40px;text-align:center;
  box-shadow:0 24px 60px -20px rgba(0,0,0,.45);
  color:var(--ink);
}
.danke-logo{height:34px;width:auto;margin:0 auto 26px;display:block;}
.danke-ico{
  width:78px;height:78px;border-radius:50%;margin:0 auto 24px;
  background:rgba(31,170,89,.12);color:var(--ok);
  display:flex;align-items:center;justify-content:center;
  animation:dankePop .45s cubic-bezier(.34,1.56,.64,1) both;
}
.danke-ico svg{width:38px;height:38px;}
@keyframes dankePop{from{transform:scale(.5);opacity:0;}to{transform:scale(1);opacity:1;}}
.danke-card h1{font-size:clamp(24px,4.6vw,32px);margin-bottom:12px;color:var(--heading);}
.danke-card p{color:var(--ink-soft);font-size:16px;line-height:1.6;margin-bottom:10px;}
.danke-hinweis{
  background:var(--bg);border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;margin:26px 0;text-align:left;
  display:flex;gap:12px;align-items:flex-start;
}
.danke-hinweis svg{width:20px;height:20px;color:var(--blue);flex-shrink:0;margin-top:2px;}
.danke-hinweis p{margin:0;font-size:14px;color:var(--ink-soft);}
.danke-hinweis strong{color:var(--heading);}
.danke-aktionen{display:flex;flex-direction:column;gap:10px;margin-top:26px;}
.danke-aktionen .btn{width:100%;}
.danke-tel{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:44px;font-size:14.5px;font-weight:600;
  color:var(--heading);text-decoration:none;
}
.danke-tel svg{width:18px;height:18px;color:var(--blue);}
@media(max-width:600px){
  .danke-card{padding:34px 22px;border-radius:18px;}
  .danke-ico{width:66px;height:66px;}
  .danke-ico svg{width:32px;height:32px;}
}