/* =========================================================
   SFH GmbH - Photovoltaik NRW  |  Light "Voltaro" Redesign
   Ocean Teal #225C6A · Baltic Blue #277B93 · Obsidian #212121 · White #FFF
   Font: Oswald
   ========================================================= */
:root{
  --teal:#225C6A; --blue:#277B93; --ink:#212121; --white:#fff;
  --soft:#eef2f3; --soft-2:#e3e9ea;
  --muted:#5d6b6e; --line:rgba(33,33,33,.12);
  --grad:linear-gradient(120deg,var(--teal),var(--blue));
  --radius:18px; --radius-lg:28px; --maxw:1200px;
  --t:.32s cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{font-family:'Oswald',system-ui,sans-serif;font-weight:300;color:var(--ink);background:var(--white);line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 28px}

h1,h2,h3,h4{font-weight:600;line-height:1.04;letter-spacing:-.5px}
h2{font-size:clamp(1.9rem,3.8vw,3.1rem)}
h3{font-size:1.35rem;font-weight:500}
p{font-weight:300}

.eyebrow{display:inline-flex;align-items:center;gap:9px;font-weight:500;letter-spacing:2.5px;text-transform:uppercase;font-size:.76rem;color:var(--teal)}
.eyebrow .dot{width:9px;height:9px;border-radius:50%;background:var(--grad);flex:none}
.accent{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:15px 30px;font-family:inherit;font-weight:500;font-size:.92rem;letter-spacing:1.2px;text-transform:uppercase;border-radius:999px;border:2px solid transparent;cursor:pointer;transition:var(--t)}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 26px rgba(39,123,147,.32)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 36px rgba(39,123,147,.45)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{transform:translateY(-3px);background:#2e2e2e}
.btn-sm{padding:10px 22px;font-size:.82rem}
.btn-block{width:100%}

/* ---------- Header ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.82);backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:var(--t)}
.site-header.scrolled{background:rgba(255,255,255,.97);border-bottom-color:var(--line);box-shadow:0 4px 20px rgba(33,33,33,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:74px;gap:24px}
.brand{display:flex;align-items:center;gap:10px}
.brand-dot{width:14px;height:14px;border-radius:50%;background:var(--grad);flex:none}
.brand-text{font-weight:700;font-size:1.35rem;letter-spacing:.5px}
.brand-text span{font-weight:300;color:var(--muted);margin-left:5px}
.main-nav{display:flex;align-items:center;gap:30px}
.main-nav a{font-weight:400;letter-spacing:.6px;font-size:.95rem;color:var(--ink);transition:color var(--t)}
.main-nav a:hover{color:var(--teal)}
.header-actions{display:flex;align-items:center;gap:16px}
.header-phone{font-weight:500;letter-spacing:.5px;font-size:.95rem}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.nav-toggle span{width:26px;height:2px;background:var(--ink);border-radius:2px;transition:var(--t)}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{padding:120px 0 70px}
.hero-top{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:end;margin-bottom:26px}
.hero-intro{color:var(--muted);font-size:1.08rem;max-width:440px;justify-self:end}
.hero-title{font-size:clamp(1.9rem,9vw,3.2rem);font-weight:600;line-height:.98;letter-spacing:-1.5px;text-transform:uppercase;margin-bottom:34px}
.hero-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:16/7;background:var(--soft)}
.hero-media>img{width:100%;height:100%;object-fit:cover}
.hero-card{position:absolute;left:26px;bottom:26px;background:var(--ink);color:#fff;border-radius:var(--radius);padding:24px 26px;width:min(300px,72%);display:grid;grid-template-columns:1fr auto;grid-template-rows:auto auto;gap:4px 14px;align-items:center}
.hero-card-num{grid-column:1;grid-row:1;font-size:2.8rem;font-weight:700;line-height:1;background:linear-gradient(120deg,#8fe3f2,#3ba9c9);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-card-label{grid-column:1;grid-row:2;font-size:.92rem;color:rgba(255,255,255,.78)}
.hero-card-arrow{grid-column:2;grid-row:1/3;width:50px;height:50px;border-radius:50%;background:var(--grad);display:grid;place-items:center;color:#fff;transition:var(--t)}
.hero-card-arrow svg{width:22px;height:22px}
.hero-card-arrow:hover{transform:rotate(45deg)}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:30px}
.hero-trust{list-style:none;display:flex;flex-wrap:wrap;gap:8px 22px;margin-left:auto}
.hero-trust li{position:relative;padding-left:22px;font-size:.92rem;color:var(--muted)}
.hero-trust li::before{content:"";position:absolute;left:0;top:7px;width:11px;height:11px;border-radius:50%;background:var(--grad)}

/* ---------- Stats band ---------- */
.stats-band{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:40px 20px;text-align:center;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat-num{display:block;font-size:clamp(2.4rem,4.5vw,3.6rem);font-weight:700;line-height:1;letter-spacing:-1px}
.stat-num::after{content:attr(data-suffix);background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-label{display:block;font-size:.9rem;letter-spacing:.5px;color:var(--muted);margin-top:8px}

/* ---------- Sections ---------- */
.section{padding:100px 0}
.section-soft{background:var(--soft)}
.section-head.center{text-align:center;max-width:760px;margin:0 auto 60px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:30px 60px;align-items:start;margin-bottom:56px}
.two-col-head h2{margin-top:14px}
.two-col-body{padding-top:6px}
.two-col-body>p{color:var(--muted);font-size:1.12rem;max-width:480px}

/* ---------- Impact row ---------- */
.impact-row{display:grid;grid-template-columns:1.1fr 1fr 1.2fr;gap:24px}
.impact-text{background:var(--soft);border-radius:var(--radius-lg);padding:38px 34px;display:flex;flex-direction:column}
.impact-text h3{margin-bottom:14px}
.impact-text p{color:var(--muted);margin-bottom:auto;padding-bottom:22px}
.text-link{font-weight:500;color:var(--teal);letter-spacing:.5px}
.text-link:hover{color:var(--blue)}
.impact-card{background:var(--ink);color:#fff;border-radius:var(--radius-lg);padding:38px 34px;display:grid;grid-template-columns:1fr auto;align-content:space-between;gap:16px;min-height:240px}
.impact-card-num{grid-column:1;font-size:3.4rem;font-weight:700;line-height:1;align-self:start;background:linear-gradient(120deg,#8fe3f2,#3ba9c9);-webkit-background-clip:text;background-clip:text;color:transparent}
.impact-card-label{grid-column:1;align-self:end;color:rgba(255,255,255,.8)}
.impact-card-arrow{grid-column:2;grid-row:1;width:52px;height:52px;border-radius:50%;background:var(--grad);display:grid;place-items:center;color:#fff;transition:var(--t)}
.impact-card-arrow svg{width:22px;height:22px}
.impact-card-arrow:hover{transform:rotate(45deg)}
.impact-media{border-radius:var(--radius-lg);overflow:hidden;background:var(--soft);min-height:240px}
.impact-media img{width:100%;height:100%;object-fit:cover}

/* ---------- Steps ---------- */
.steps{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:s}
.step{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);padding:34px 28px;position:relative;transition:var(--t)}
.step:hover{transform:translateY(-6px);box-shadow:0 20px 44px rgba(33,33,33,.08)}
.step-num{font-size:2.6rem;font-weight:700;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;display:block;margin-bottom:16px}
.step h3{margin-bottom:10px}
.step p{color:var(--muted);font-size:.98rem}

/* ---------- Feature grid ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);padding:34px 30px;transition:var(--t)}
.feature:hover{transform:translateY(-6px);box-shadow:0 20px 44px rgba(33,33,33,.08);border-color:transparent}
.feature-icon{width:56px;height:56px;border-radius:14px;display:grid;place-items:center;background:var(--soft);color:var(--teal);margin-bottom:20px}
.feature-icon svg{width:28px;height:28px}
.feature h3{margin-bottom:10px}
.feature p{color:var(--muted)}
.feature-media{padding:0;overflow:hidden;background:var(--soft);min-height:200px}
.feature-media img{width:100%;height:100%;object-fit:cover}

/* ---------- Section dark + gallery ---------- */
.section-dark{background:var(--ink);color:#fff}
.two-col-light h2{color:#fff}
.two-col-light .two-col-body>p{color:rgba(255,255,255,.72)}
.gallery{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.g-item{position:relative;border-radius:var(--radius);overflow:hidden;aspect-ratio:3/4;background:#2c2c2c}
.g-item.g-item-lg{grid-row:span 1;transform:scale(1.0)}
.g-item img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.g-item:hover img{transform:scale(1.07)}
.g-item figcaption{position:absolute;left:14px;bottom:12px;font-weight:500;letter-spacing:.5px;font-size:.92rem;color:#fff;text-shadow:0 2px 10px rgba(0,0,0,.6)}
.g-item-lg{aspect-ratio:3/4.6;margin-top:-22px}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px;max-width:none}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{list-style:none;cursor:pointer;padding:18px 0;font-size:1.12rem;font-weight:500;display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:1.5rem;color:var(--teal);transition:transform var(--t);font-weight:300}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 0 20px}
.faq-body p{color:var(--muted)}

/* ---------- Kontakt ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.25fr;gap:30px;align-items:start}
.contact-info{display:flex;flex-direction:column}
.contact-line{display:flex;align-items:center;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.contact-ic{width:48px;height:48px;flex:none;border-radius:12px;display:grid;place-items:center;background:var(--soft);color:var(--teal)}
.contact-ic svg{width:22px;height:22px}
.contact-line span small{display:block;font-size:.72rem;letter-spacing:1.6px;text-transform:uppercase;color:var(--muted)}
.contact-line>span:last-child{font-size:1.12rem;font-weight:500}
.contact-info .btn-block{margin-top:26px}
.contact-form{background:var(--soft);border-radius:var(--radius-lg);padding:36px}
.field{margin-bottom:18px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field label{display:block;font-size:.78rem;letter-spacing:1.4px;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.field input,.field textarea{width:100%;font-family:inherit;font-size:1rem;font-weight:300;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:11px;padding:13px 16px;transition:var(--t)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(39,123,147,.14)}
.field textarea{resize:vertical}
.checkbox{display:flex;gap:12px;align-items:flex-start;margin:4px 0 18px;font-size:.9rem;color:var(--muted);cursor:pointer}
.checkbox input{margin-top:3px;accent-color:var(--blue);width:18px;height:18px;flex:none}
.form-note{margin-top:14px;font-size:.95rem;min-height:1em}
.form-note.error{color:#c0392b}
.form-note.success{color:#1e7e4f}
.field.invalid input,.field.invalid textarea{border-color:#e15a45}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#fff;padding:80px 0 30px;overflow:hidden}
.footer-top{display:grid;grid-template-columns:1.2fr 2fr;gap:40px;padding-bottom:50px}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-text span{color:rgba(255,255,255,.55)}
.footer-brand p{color:rgba(255,255,255,.66);margin-top:16px;max-width:300px;font-size:.96rem}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.footer-col h4{font-size:.8rem;letter-spacing:2px;text-transform:uppercase;color:#7fd4e6;margin-bottom:16px;font-weight:500}
.footer-col a,.footer-col p{display:block;color:rgba(255,255,255,.7);font-size:.95rem;margin-bottom:9px;transition:color var(--t)}
.footer-col a:hover{color:#fff}
.footer-wordmark{font-size:clamp(3.5rem,18vw,15rem);font-weight:700;line-height:.82;letter-spacing:-2px;text-align:center;background:linear-gradient(180deg,rgba(255,255,255,.16),rgba(255,255,255,.03));-webkit-background-clip:text;background-clip:text;color:transparent;margin:10px 0 -10px;user-select:none}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;border-top:1px solid rgba(255,255,255,.12);padding-top:24px}
.footer-bottom p{color:rgba(255,255,255,.5);font-size:.85rem}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:none}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width:1000px){
  .impact-row{grid-template-columns:1fr 1fr}
  .impact-media{grid-column:1/3;min-height:260px}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .gallery{grid-template-columns:repeat(3,1fr)}
  .g-item-lg{margin-top:0;aspect-ratio:3/4}
}
@media (max-width:820px){
  .main-nav{position:fixed;top:74px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:#fff;border-bottom:1px solid var(--line);padding:8px 28px 22px;transform:translateY(-130%);opacity:0;pointer-events:none;transition:var(--t);box-shadow:0 14px 30px rgba(33,33,33,.1)}
  .main-nav.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .main-nav a{padding:15px 2px;border-bottom:1px solid var(--line);font-size:1.05rem}
  .nav-toggle{display:flex}
  .header-phone{display:none}
  .hero-top{grid-template-columns:1fr;gap:14px}
  .hero-intro{justify-self:start}
  .two-col{grid-template-columns:1fr;gap:18px;margin-bottom:42px}
  .two-col-body>p{font-size:1.05rem}
  .section{padding:74px 0}
  .hero-trust{margin-left:0;width:100%}
}
@media (max-width:600px){
  .container{padding:0 18px}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat{border-bottom:1px solid var(--line)}
  .stat:nth-child(odd){border-right:1px solid var(--line)}
  .stat:nth-child(even){border-right:0}
  .impact-row{grid-template-columns:1fr}
  .impact-media{grid-column:1}
  .feature-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .gallery{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
  .field-row{grid-template-columns:1fr}
  .contact-form{padding:24px}
  .footer-top{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:1fr 1fr}
  .hero-actions .btn{width:100%}
  .hero-card{position:static;width:100%;margin-top:14px;border-radius:0 0 var(--radius-lg) var(--radius-lg)}
  .hero-media{aspect-ratio:auto}
  .hero-media>img{aspect-ratio:16/10}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}.reveal{opacity:1;transform:none}}

/* =========================================================
   MULTISTEP WIZARD
   ========================================================= */
.wizard{background:var(--soft);border-radius:var(--radius-lg);padding:34px}
.wiz-progress{height:6px;border-radius:999px;background:var(--soft-2);overflow:hidden}
.wiz-bar{display:block;height:100%;width:20%;background:var(--grad);border-radius:999px;transition:width .45s cubic-bezier(.22,.61,.36,1)}
.wiz-meta{display:flex;justify-content:space-between;font-size:.78rem;letter-spacing:1.2px;text-transform:uppercase;color:var(--muted);margin:12px 0 24px}
.wiz-step{border:0;padding:0;margin:0;display:none;min-width:0}
.wiz-step.is-active{display:block;animation:wizIn .35s ease}
@keyframes wizIn{from{opacity:0;transform:translateX(14px)}to{opacity:1;transform:none}}
.wiz-step legend{font-size:1.32rem;font-weight:500;line-height:1.22;margin-bottom:22px;padding:0;float:left;width:100%}
.wiz-step legend small{display:block;font-size:.84rem;font-weight:300;color:var(--muted);letter-spacing:0;text-transform:none;margin-top:5px}
.options{display:grid;gap:14px;clear:both}
.options-2{grid-template-columns:1fr 1fr}
.options-3{grid-template-columns:repeat(3,1fr)}
.opt{cursor:pointer;margin:0}
.opt input{position:absolute;opacity:0;width:0;height:0}
.opt-card{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-align:center;height:100%;min-height:124px;padding:22px 14px;background:#fff;border:2px solid transparent;border-radius:16px;transition:var(--t)}
.opt-card:hover{border-color:rgba(39,123,147,.45);transform:translateY(-2px)}
.opt-ic{width:46px;height:46px;display:grid;place-items:center;color:var(--teal)}
.opt-ic svg{width:34px;height:34px}
.opt-title{font-weight:500;letter-spacing:.3px;font-size:1rem;line-height:1.2}
.opt-big{font-size:1.5rem;font-weight:600;color:var(--ink)}
.opt input:checked + .opt-card{border-color:var(--blue);background:linear-gradient(135deg,rgba(34,92,106,.09),rgba(39,123,147,.05));box-shadow:0 8px 24px rgba(39,123,147,.16)}
.opt input:checked + .opt-card .opt-ic,.opt input:checked + .opt-card .opt-big{color:var(--blue)}
.opt input:focus-visible + .opt-card{outline:2px solid var(--blue);outline-offset:2px}
.wiz-nav{display:flex;gap:12px;margin-top:26px}
.wiz-nav .btn{flex:1}
.btn-ghost-dark{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost-dark:hover{background:#fff;border-color:var(--ink)}
@media (max-width:600px){
  .wizard{padding:24px}
  .options-3{grid-template-columns:1fr 1fr}
  .opt-card{min-height:108px;padding:18px 10px}
  .opt-ic svg{width:30px;height:30px}
}
.wiz-done{text-align:center;padding:18px 6px}
.wiz-done-ic{width:64px;height:64px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;margin:0 auto 18px}
.wiz-done-ic svg{width:30px;height:30px}
.wiz-done h3{font-size:1.5rem;margin-bottom:10px}
.wiz-done p{color:var(--muted);margin-bottom:22px}
.btn[hidden]{display:none!important}
.opt-wide{grid-column:1 / -1}
.opt-title small{display:inline-block;font-size:.68rem;font-weight:500;letter-spacing:1px;text-transform:uppercase;color:var(--blue);background:rgba(39,123,147,.12);padding:2px 8px;border-radius:999px;margin-left:7px;vertical-align:middle}