/* =========================================================================
   NORDLOFT GMBH – DESIGN SYSTEM
   Palette:  Schiefer (Hamburger Dächer) · Kupfer (Dachblech) · Off-White
   Display:  "Fraunces" (charaktervolle Serif, mit Maß)
   Body:     "Inter Tight" (klare Grotesk)
   Signatur: Die Giebellinie – ein wiederkehrender Dachwinkel
   ========================================================================= */

:root{
  --slate-900:#1a1f26;
  --slate-800:#242b35;
  --slate-700:#374150;
  --slate-500:#5d6b7d;
  --slate-300:#aab4c0;
  --paper:#f6f3ec;
  --paper-warm:#efe9dd;
  --white:#ffffff;
  --copper:#b56a3f;
  --copper-dark:#8f5230;
  --copper-light:#d49066;
  --sky:#5b7fa6;
  --line:rgba(26,31,38,.12);
  --ok:#3c7a52;

  --maxw:1180px;
  --gut:clamp(20px,5vw,64px);
  --radius:3px;

  --shadow-sm:0 1px 2px rgba(26,31,38,.06),0 4px 14px rgba(26,31,38,.05);
  --shadow-md:0 10px 40px rgba(26,31,38,.12);

  --ff-display:"Fraunces",Georgia,"Times New Roman",serif;
  --ff-body:"Inter Tight","Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--ff-body);color:var(--slate-800);
  background:var(--paper);line-height:1.6;font-size:17px;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

/* ---- Type scale ------------------------------------------------------- */
h1,h2,h3,h4{font-family:var(--ff-display);font-weight:600;line-height:1.08;
  letter-spacing:-.015em;color:var(--slate-900);margin:0 0 .5em}
h1{font-size:clamp(2.4rem,6vw,4.4rem);font-weight:600}
h2{font-size:clamp(1.8rem,3.6vw,2.9rem)}
h3{font-size:clamp(1.25rem,2vw,1.6rem)}
p{margin:0 0 1em}
.lead{font-size:clamp(1.05rem,1.6vw,1.3rem);color:var(--slate-700);line-height:1.55}

.eyebrow{font-family:var(--ff-body);font-weight:600;font-size:.78rem;
  letter-spacing:.18em;text-transform:uppercase;color:var(--copper);
  display:inline-flex;align-items:center;gap:.6em;margin-bottom:1.1em}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--copper)}

/* ---- Layout ----------------------------------------------------------- */
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gut)}
.section{padding-block:clamp(64px,9vw,128px)}
.section--tight{padding-block:clamp(48px,6vw,84px)}
.grid{display:grid;gap:clamp(24px,4vw,56px)}
@media(min-width:860px){
  .grid-2{grid-template-columns:1fr 1fr}
  .grid-3{grid-template-columns:repeat(3,1fr)}
  .grid-4{grid-template-columns:repeat(4,1fr)}
}
.center{text-align:center}
.measure{max-width:62ch}
.measure-c{max-width:62ch;margin-inline:auto}

/* ---- Signature: Giebellinie ------------------------------------------ */
.gable{display:block;width:100%;height:auto;color:var(--copper)}
.roofline{position:relative}
.roofline::after{content:"";position:absolute;left:0;right:0;bottom:0;height:0;
  border-bottom:2px solid var(--line)}

/* ---- Buttons ---------------------------------------------------------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.6em;
  font-family:var(--ff-body);font-weight:600;font-size:1rem;
  padding:.95em 1.7em;border-radius:var(--radius);border:1.5px solid transparent;
  cursor:pointer;transition:.22s ease;line-height:1;text-align:center}
.btn--primary{background:var(--copper);color:var(--white)}
.btn--primary:hover{background:var(--copper-dark);transform:translateY(-2px);
  box-shadow:0 8px 22px rgba(143,82,48,.34)}
.btn--dark{background:var(--slate-900);color:var(--paper)}
.btn--dark:hover{background:var(--slate-800);transform:translateY(-2px)}
.btn--ghost{background:transparent;border-color:var(--slate-300);color:var(--slate-800)}
.btn--ghost:hover{border-color:var(--slate-900);background:var(--slate-900);color:var(--paper)}
.btn--lg{padding:1.1em 2.1em;font-size:1.05rem}
.btn--block{width:100%}

/* ---- Header / Nav ----------------------------------------------------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(246,243,236,.86);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;
  padding-block:14px;gap:24px}
.brand{display:flex;align-items:center;gap:.65em;font-family:var(--ff-display);
  font-weight:600;font-size:1.45rem;color:var(--slate-900);letter-spacing:-.02em}
.brand svg{width:30px;height:30px;color:var(--copper);flex:none}
.brand b{font-weight:600}
.nav-links{display:none;align-items:center;gap:30px;font-size:.96rem;font-weight:500}
.nav-links a{color:var(--slate-700);transition:color .18s}
.nav-links a:hover{color:var(--copper)}
.nav-cta{display:none}
@media(min-width:980px){.nav-links{display:flex}.nav-cta{display:inline-flex}}
.burger{display:inline-flex;flex-direction:column;gap:5px;background:none;border:0;
  cursor:pointer;padding:8px}
.burger span{width:24px;height:2px;background:var(--slate-900);transition:.25s}
@media(min-width:980px){.burger{display:none}}
.mobile-menu{display:none;flex-direction:column;gap:4px;padding:8px var(--gut) 24px;
  border-bottom:1px solid var(--line);background:var(--paper)}
.mobile-menu.open{display:flex}
.mobile-menu a{padding:12px 0;border-bottom:1px solid var(--line);font-weight:500}
.mobile-menu .btn{margin-top:12px}

/* ---- Hero ------------------------------------------------------------- */
.hero{position:relative;background:var(--slate-900);color:var(--paper);
  overflow:hidden;padding-block:clamp(70px,11vw,150px)}
.hero::before{content:"";position:absolute;inset:0;
  background:radial-gradient(120% 90% at 80% 0%,rgba(181,106,63,.34),transparent 55%),
             radial-gradient(90% 80% at 0% 100%,rgba(91,127,166,.22),transparent 50%);
  pointer-events:none}
.hero .wrap{position:relative;z-index:2}
.hero h1{color:var(--paper);max-width:16ch}
.hero h1 em{font-style:italic;color:var(--copper-light);font-weight:500}
.hero .lead{color:var(--slate-300);max-width:54ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{display:flex;flex-wrap:wrap;gap:clamp(28px,5vw,64px);margin-top:54px;
  padding-top:32px;border-top:1px solid rgba(246,243,236,.16)}
.hero-stat .num{font-family:var(--ff-display);font-size:clamp(2rem,4vw,2.8rem);
  color:var(--white);line-height:1}
.hero-stat .lbl{font-size:.86rem;color:var(--slate-300);margin-top:6px;max-width:20ch}
/* hero roof silhouette */
.hero-roofs{position:absolute;left:0;right:0;bottom:-1px;z-index:1;
  color:var(--paper);opacity:.95}

/* ---- Cards ------------------------------------------------------------ */
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:clamp(24px,3vw,36px);box-shadow:var(--shadow-sm);
  transition:transform .25s,box-shadow .25s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.card .ico{width:46px;height:46px;color:var(--copper);margin-bottom:18px}
.card h3{margin-bottom:.4em}
.card p{color:var(--slate-700);margin:0;font-size:.98rem}

/* numbered process */
.step{position:relative;padding-left:0}
.step .no{font-family:var(--ff-display);font-size:1.1rem;color:var(--copper);
  font-weight:600;display:block;margin-bottom:.6em;letter-spacing:.02em}
.step .no::after{content:"";display:block;width:34px;height:2px;background:var(--copper);
  margin-top:.7em}

/* ---- Advantages comparison ------------------------------------------- */
.compare{width:100%;border-collapse:collapse;background:var(--white);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;font-size:.98rem}
.compare th,.compare td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line)}
.compare thead th{background:var(--slate-900);color:var(--paper);font-family:var(--ff-body);
  font-weight:600;font-size:.82rem;letter-spacing:.04em;text-transform:uppercase}
.compare thead th:first-child{background:var(--slate-800)}
.compare thead th.col-hi{background:var(--copper);color:#fff}
.compare tbody tr:last-child td{border-bottom:0}
.compare td:first-child{font-weight:600;color:var(--slate-900);width:34%}
.compare .yes{color:var(--ok);font-weight:600}
.compare .mid{color:var(--copper-dark);font-weight:600}
.compare .no{color:var(--slate-500)}
.compare .col-hi{background:rgba(181,106,63,.06)}
@media(max-width:680px){.compare{font-size:.86rem}.compare th,.compare td{padding:11px 10px}}

/* ---- Calculators ------------------------------------------------------ */
.calc{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-md);overflow:hidden}
.calc-head{background:var(--slate-900);color:var(--paper);padding:26px clamp(22px,3vw,36px)}
.calc-head h3{color:var(--paper);margin:0}
.calc-head p{color:var(--slate-300);margin:.4em 0 0;font-size:.95rem}
.calc-body{padding:clamp(22px,3vw,36px)}
.field{margin-bottom:22px}
.field label{display:block;font-weight:600;font-size:.92rem;margin-bottom:8px;color:var(--slate-800)}
.field .hint{font-weight:400;color:var(--slate-500);font-size:.84rem}
.field input,.field select{width:100%;padding:13px 15px;font-size:1rem;font-family:var(--ff-body);
  border:1.5px solid var(--line);border-radius:var(--radius);background:var(--paper);
  color:var(--slate-900);transition:border-color .18s}
.field input:focus,.field select:focus{outline:none;border-color:var(--copper);
  background:var(--white)}
.range-row{display:flex;align-items:center;gap:14px}
.range-row input[type=range]{flex:1;accent-color:var(--copper);padding:0}
.range-val{font-family:var(--ff-display);font-weight:600;color:var(--slate-900);
  min-width:84px;text-align:right;font-size:1.1rem}
.calc-result{background:var(--paper-warm);border-top:1px solid var(--line);
  padding:clamp(22px,3vw,36px)}
.result-big{font-family:var(--ff-display);font-size:clamp(2.1rem,5vw,3.2rem);
  color:var(--copper-dark);line-height:1;margin:.1em 0 .2em}
.result-sub{color:var(--slate-700);font-size:.95rem}
.result-grid{display:grid;gap:14px 24px;margin-top:22px}
@media(min-width:560px){.result-grid{grid-template-columns:1fr 1fr}}
.result-item{display:flex;justify-content:space-between;gap:16px;
  padding-bottom:10px;border-bottom:1px solid var(--line);font-size:.95rem}
.result-item span:first-child{color:var(--slate-600,var(--slate-700))}
.result-item span:last-child{font-weight:600;color:var(--slate-900)}
.disclaimer{font-size:.78rem;color:var(--slate-500);margin-top:18px;line-height:1.5}

/* ---- Forms / Lead ----------------------------------------------------- */
.lead-form{display:grid;gap:16px}
.lead-form .row{display:grid;gap:16px}
@media(min-width:560px){.lead-form .row{grid-template-columns:1fr 1fr}}
.lead-form input,.lead-form select,.lead-form textarea{width:100%;padding:13px 15px;
  font-size:1rem;font-family:var(--ff-body);border:1.5px solid var(--line);
  border-radius:var(--radius);background:var(--white)}
.lead-form input:focus,.lead-form select:focus,.lead-form textarea:focus{
  outline:none;border-color:var(--copper)}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:.84rem;color:var(--slate-500)}
.consent input{width:auto;margin-top:3px}
.form-note{font-size:.84rem;color:var(--slate-500)}
.success{background:var(--ok);color:#fff;padding:18px 22px;border-radius:var(--radius);
  font-weight:500;display:none}
.success.show{display:block}

/* ---- Lead magnet band ------------------------------------------------- */
.magnet{background:var(--slate-900);color:var(--paper);border-radius:var(--radius);
  padding:clamp(32px,5vw,64px);position:relative;overflow:hidden}
.magnet::before{content:"";position:absolute;inset:0;
  background:radial-gradient(80% 120% at 100% 0%,rgba(181,106,63,.3),transparent 55%)}
.magnet > *{position:relative;z-index:2}
.magnet h2{color:var(--paper)}
.magnet .lead{color:var(--slate-300)}
.magnet ul{list-style:none;padding:0;margin:0 0 8px;display:grid;gap:12px}
.magnet li{display:flex;gap:12px;align-items:flex-start;color:var(--paper)}
.magnet li svg{color:var(--copper-light);flex:none;margin-top:3px}

/* ---- References ------------------------------------------------------- */
.ref{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s}
.ref:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.ref-img{aspect-ratio:4/3;position:relative;overflow:hidden;background:var(--slate-800)}
.ref-img svg{width:100%;height:100%}
.ref-tag{position:absolute;top:14px;left:14px;background:var(--paper);color:var(--slate-900);
  font-size:.74rem;font-weight:600;padding:5px 11px;border-radius:100px;letter-spacing:.03em}
.ref-body{padding:24px}
.ref-body h3{font-size:1.25rem;margin-bottom:.3em}
.ref-meta{display:flex;flex-wrap:wrap;gap:18px;margin-top:16px;padding-top:16px;
  border-top:1px solid var(--line);font-size:.86rem}
.ref-meta b{font-family:var(--ff-display);font-size:1.15rem;color:var(--copper-dark);
  display:block}
.ref-meta span{color:var(--slate-500)}

/* ---- Quotes / testimonials ------------------------------------------- */
.quote{background:var(--paper-warm);border-left:3px solid var(--copper);
  padding:clamp(24px,3vw,38px);border-radius:0 var(--radius) var(--radius) 0}
.quote p{font-family:var(--ff-display);font-size:clamp(1.15rem,2vw,1.5rem);
  font-style:italic;color:var(--slate-900);line-height:1.35;margin-bottom:1em}
.quote cite{font-style:normal;font-weight:600;color:var(--slate-700);font-size:.95rem}
.quote cite span{display:block;font-weight:400;color:var(--slate-500);font-size:.86rem}

/* ---- Stat band -------------------------------------------------------- */
.statband{background:var(--copper);color:var(--white)}
.statband .grid{gap:0}
.statband .s{padding:clamp(28px,4vw,48px) var(--gut);text-align:center;
  border-right:1px solid rgba(255,255,255,.2)}
.statband .s:last-child{border-right:0}
.statband .num{font-family:var(--ff-display);font-size:clamp(2.2rem,5vw,3.4rem);line-height:1}
.statband .lbl{font-size:.9rem;opacity:.9;margin-top:8px}
@media(max-width:859px){.statband .s{border-right:0;border-bottom:1px solid rgba(255,255,255,.2)}
  .statband .s:last-child{border-bottom:0}}

/* ---- FAQ -------------------------------------------------------------- */
.faq details{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  margin-bottom:12px;overflow:hidden}
.faq summary{padding:20px 24px;font-weight:600;cursor:pointer;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:16px;color:var(--slate-900)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--ff-display);font-size:1.5rem;
  color:var(--copper);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 24px 22px;margin:0;color:var(--slate-700)}

/* ---- Standorte chips -------------------------------------------------- */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.chip{padding:7px 15px;border:1px solid var(--line);border-radius:100px;font-size:.9rem;
  color:var(--slate-700);background:var(--white);transition:.18s}
.chip:hover{border-color:var(--copper);color:var(--copper-dark)}

/* ---- Footer ----------------------------------------------------------- */
.site-footer{background:var(--slate-900);color:var(--slate-300);
  padding-block:clamp(48px,6vw,80px) 32px}
.site-footer h4{color:var(--paper);font-family:var(--ff-body);font-weight:600;
  font-size:.82rem;letter-spacing:.12em;text-transform:uppercase;margin-bottom:18px}
.footer-grid{display:grid;gap:36px}
@media(min-width:760px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr}}
.site-footer a{color:var(--slate-300);transition:color .18s;display:block;
  padding:5px 0;font-size:.94rem}
.site-footer a:hover{color:var(--copper-light)}
.footer-brand .brand{color:var(--paper);margin-bottom:14px}
.footer-brand p{font-size:.92rem;max-width:34ch}
.footer-bottom{margin-top:48px;padding-top:24px;border-top:1px solid rgba(246,243,236,.14);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;font-size:.84rem}
.footer-bottom a{display:inline}

/* ---- breadcrumb ------------------------------------------------------- */
.crumb{font-size:.84rem;color:var(--slate-500);padding-top:24px}
.crumb a:hover{color:var(--copper)}

/* ---- utilities -------------------------------------------------------- */
.mt-s{margin-top:14px}.mt-m{margin-top:28px}.mt-l{margin-top:48px}
.bg-paper-warm{background:var(--paper-warm)}
.bg-white{background:var(--white)}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}
:focus-visible{outline:2.5px solid var(--copper);outline-offset:3px;border-radius:2px}