/* =========================================================
   ACOMP-ENERGY — Design Tokens
   Graphit/Grün-Identität aus dem bestehenden CI abgeleitet,
   diagonales Band-Motiv aus dem Briefpapier als Signatur.
   ========================================================= */
:root{
  --graphite:      #1B2329;
  --graphite-soft: #222C33;
  --graphite-line: #2E3A42;
  --green:         #4CAF50;
  --green-deep:    #2F8132;
  --lime:          #A6E22E;
  --grey-light:    #E9ECEF;
  --grey-mid:      #AEB7BD;
  --white:         #FFFFFF;
  --ink:           #1B2329;
  --ink-60:        rgba(27,35,41,.62);
  --ink-40:        rgba(27,35,41,.4);

  --font-display: 'Space Grotesk', 'Arial Narrow', sans-serif;
  --font-body:    'Inter', -apple-system, Segoe UI, sans-serif;
  --font-mono:    'IBM Plex Mono', monospace;

  --gradient-brand: linear-gradient(115deg, var(--graphite) 0%, var(--graphite) 38%, var(--green-deep) 74%, var(--lime) 100%);
  --gradient-ribbon: linear-gradient(135deg, var(--green) 0%, var(--lime) 100%);

  --radius-s: 6px;
  --radius-m: 14px;
  --shadow-card: 0 18px 40px -22px rgba(27,35,41,.35);
  --max-w: 1180px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}

body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--white);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ font-family:var(--font-display); margin:0; line-height:1.08; letter-spacing:-0.01em; }
p{ margin:0; }
button{ font-family:inherit; cursor:pointer; }

.wrap{ max-width:var(--max-w); margin:0 auto; padding:0 32px; }
@media (max-width:640px){ .wrap{ padding:0 20px; } }

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

.eyebrow{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--green-deep);
  display:inline-flex;
  align-items:center;
  gap:10px;
}
.eyebrow::before{
  content:"";
  width:22px; height:2px;
  background:var(--gradient-ribbon);
  display:inline-block;
}
.on-dark .eyebrow{ color:var(--lime); }

/* buttons */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:14px 26px;
  border-radius:var(--radius-s);
  font-weight:600; font-size:15px;
  border:1.5px solid transparent;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease, color .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--gradient-ribbon);
  color:var(--graphite);
  box-shadow:0 12px 24px -12px rgba(76,175,80,.55);
}
.btn-primary:hover{ transform:translateY(-2px); box-shadow:0 16px 28px -12px rgba(76,175,80,.65); }
.btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,.28);
  color:var(--white);
}
.btn-ghost:hover{ border-color:var(--lime); color:var(--lime); }
.btn-dark{
  background:var(--graphite);
  color:var(--white);
}
.btn-dark:hover{ background:var(--graphite-soft); transform:translateY(-2px); }
.btn-block{ width:100%; }
.btn[disabled]{ opacity:.6; cursor:not-allowed; transform:none !important; }

/* =========================================================
   HEADER
   ========================================================= */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(27,35,41,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.site-header .wrap{
  display:flex; align-items:center; justify-content:space-between;
  height:78px;
}
.brand{ display:flex; align-items:center; gap:12px; }
.brand-logo{
  height:64px; width:auto; max-width:min(280px, 58vw);
  display:block; object-fit:contain;
}
.brand-logo--footer{ height:52px; max-width:200px; }
.brand-mark{ width:38px; height:38px; flex:none; }
.brand-word{ display:flex; flex-direction:column; line-height:1; }
.brand-word b{
  font-family:var(--font-display); font-size:19px; letter-spacing:.02em; color:var(--white);
}
.brand-word span{
  font-family:var(--font-display); font-size:11px; letter-spacing:.24em; color:var(--lime); margin-top:3px;
}

.main-nav ul{ display:flex; gap:34px; }
.main-nav a{
  font-size:14.5px; font-weight:500; color:var(--grey-light);
  position:relative; padding:6px 0;
}
.main-nav a::after{
  content:""; position:absolute; left:0; right:0; bottom:0; height:2px;
  background:var(--gradient-ribbon); transform:scaleX(0); transform-origin:left; transition:transform .2s ease;
}
.main-nav a:hover{ color:var(--white); }
.main-nav a:hover::after{ transform:scaleX(1); }

.header-actions{ display:flex; align-items:center; gap:18px; }
.header-actions .btn{ padding:11px 20px; font-size:14px; }
.tel-link{ display:flex; align-items:center; gap:8px; color:var(--grey-light); font-size:14px; font-weight:600; }
.tel-link svg{ width:17px; height:17px; stroke:var(--lime); }

.nav-toggle{
  display:none; background:none; border:none; padding:8px; width:40px; height:40px;
  flex-direction:column; justify-content:center; gap:5px;
}
.nav-toggle span{ display:block; height:2px; background:var(--white); border-radius:2px; }

@media (max-width:920px){
  .main-nav{
    position:fixed; inset:78px 0 0 0; background:var(--graphite);
    padding:28px 24px; transform:translateY(-8px); opacity:0; pointer-events:none;
    transition:opacity .2s ease, transform .2s ease;
  }
  .main-nav.open{ opacity:1; transform:translateY(0); pointer-events:auto; }
  .main-nav ul{ flex-direction:column; gap:4px; }
  .main-nav a{ display:block; padding:14px 4px; font-size:17px; border-bottom:1px solid rgba(255,255,255,.08); }
  .header-actions .btn-ghost{ display:none; }
  .nav-toggle{ display:flex; }
}

/* =========================================================
   HERO
   ========================================================= */
.hero{
  position:relative; overflow:hidden;
  background:#0d1215;
  color:var(--white);
  padding:96px 0 88px;
  min-height:min(78vh, 720px);
  display:flex; align-items:center;
}
.hero-media{
  position:absolute; inset:0;
  z-index:0;
}
.hero-media img{
  width:100%; height:100%; object-fit:cover; object-position:center 40%;
}
.hero-media::after{
  content:""; position:absolute; inset:0;
  background:
    linear-gradient(105deg, rgba(13,18,21,.92) 0%, rgba(13,18,21,.82) 46%, rgba(13,18,21,.45) 72%, rgba(13,18,21,.28) 100%),
    linear-gradient(180deg, rgba(13,18,21,.2) 0%, transparent 42%, rgba(13,18,21,.55) 100%);
}
.hero::before{
  content:""; position:absolute; inset:0; z-index:1;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse at 70% 30%, black 0%, transparent 68%);
  pointer-events:none;
}
.hero-ribbon{
  position:absolute; top:-60px; right:-120px; width:300px; height:300px;
  pointer-events:none; z-index:1; opacity:.55;
}
@media (max-width:920px){
  .hero-ribbon{ opacity:.28; right:-160px; width:240px; height:240px; }
}
.hero-grid{
  position:relative; z-index:2;
  display:grid; grid-template-columns:minmax(0, 640px); gap:56px; align-items:center;
  width:100%;
}
.hero-copy{ max-width:640px; }
.hero .eyebrow{ color:var(--lime); }

.hero h1{
  font-size:clamp(34px, 5vw, 58px);
  margin-top:18px;
  color:var(--white);
  text-shadow:0 2px 24px rgba(0,0,0,.35);
}
.hero h1 em{
  font-style:normal;
  color:var(--white);
  border-bottom:3px solid var(--lime);
  padding-bottom:.04em;
}
.hero p.lead{
  margin-top:22px; max-width:52ch;
  font-size:17.5px; color:var(--grey-light); opacity:.92;
}
.hero-cta{ display:flex; gap:14px; margin-top:34px; flex-wrap:wrap; }

.hero-stats{
  display:flex; gap:34px; margin-top:56px; flex-wrap:wrap;
}
.hero-stats .stat b{
  font-family:var(--font-mono); font-size:28px; color:var(--lime); display:block;
}
.hero-stats .stat span{ font-size:12.5px; color:var(--grey-light); opacity:.8; }

/* =========================================================
   TRUST STRIP
   ========================================================= */
.trust-strip{
  background:var(--graphite-soft); color:var(--grey-light);
  padding:20px 0;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.trust-strip ul{
  display:flex; justify-content:center; gap:0; flex-wrap:wrap;
  font-family:var(--font-mono); font-size:12.5px; letter-spacing:.1em; text-transform:uppercase;
}
.trust-strip li{ padding:0 26px; border-left:1px solid rgba(255,255,255,.18); }
.trust-strip li:first-child{ border-left:none; }
@media (max-width:640px){ .trust-strip li{ padding:6px 16px; border-left:none; } }

/* =========================================================
   SECTION shared
   ========================================================= */
section{ padding:104px 0; }
.section-head{ max-width:640px; margin-bottom:56px; }
.section-head h2{ font-size:clamp(28px,3.4vw,42px); margin-top:14px; }
.section-head p{ margin-top:16px; font-size:16.5px; color:var(--ink-60); }
.section-alt{ background:var(--grey-light); }

/* =========================================================
   LEISTUNGEN (hex cards)
   ========================================================= */
.services-grid{
  display:grid; grid-template-columns:repeat(3,1fr); gap:28px;
}
@media (max-width:920px){ .services-grid{ grid-template-columns:1fr; } }

.service-card{
  background:var(--white);
  border:1px solid #E4E8EA;
  border-radius:var(--radius-m);
  padding:0;
  overflow:hidden;
  position:relative;
  transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
  display:flex; flex-direction:column;
}
.service-card:hover{ transform:translateY(-6px); box-shadow:var(--shadow-card); border-color:transparent; }
.service-photo{
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--graphite);
}
.service-photo img{
  width:100%; height:100%; object-fit:cover;
  transition:transform .45s ease;
}
.service-card:hover .service-photo img{ transform:scale(1.04); }
.service-body{ padding:28px 28px 30px; flex:1; display:flex; flex-direction:column; }
.hex-icon{
  width:52px; height:52px;
  clip-path:polygon(25% 6%, 75% 6%, 100% 50%, 75% 94%, 25% 94%, 0% 50%);
  background:var(--graphite);
  display:flex; align-items:center; justify-content:center;
  margin-bottom:18px;
  margin-top:-46px;
  position:relative;
  box-shadow:0 8px 20px -10px rgba(0,0,0,.45);
}
.hex-icon svg{ width:24px; height:24px; stroke:var(--lime); fill:none; }
.service-card h3{ font-size:21px; margin-bottom:12px; }
.service-card p{ color:var(--ink-60); font-size:15px; }
.service-card .tag-list{ margin-top:20px; display:flex; flex-wrap:wrap; gap:8px; }
.service-card .tag-list li{
  font-family:var(--font-mono); font-size:11.5px; letter-spacing:.03em;
  background:var(--grey-light); color:var(--graphite);
  padding:5px 10px; border-radius:5px;
}
.service-card .more{
  display:inline-flex; align-items:center; gap:6px;
  margin-top:auto; padding-top:22px; font-weight:600; font-size:14px; color:var(--green-deep);
}
.service-card .more svg{ width:15px; height:15px; transition:transform .18s ease; }
.service-card:hover .more svg{ transform:translateX(3px); }

/* =========================================================
   VORTEILE (stats)
   ========================================================= */
.vorteile{ background:var(--graphite); color:var(--white); position:relative; overflow:hidden; }
.vorteile-grid{
  display:grid; grid-template-columns:repeat(4,1fr); gap:1px;
  background:rgba(255,255,255,.1);
  border-radius:var(--radius-m); overflow:hidden;
  margin-top:20px;
}
.vorteile-item{ background:var(--graphite-soft); padding:34px 26px; }
.vorteile-item b{
  font-family:var(--font-mono); font-size:34px; color:var(--lime); display:block;
}
.vorteile-item span{ font-size:14px; color:var(--grey-light); opacity:.85; display:block; margin-top:8px; }
@media (max-width:920px){ .vorteile-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:560px){ .vorteile-grid{ grid-template-columns:1fr; } }

/* =========================================================
   ABLAUF (process)
   ========================================================= */
.process-list{
  display:grid; grid-template-columns:repeat(5,1fr); gap:22px; margin-top:8px;
}
@media (max-width:980px){ .process-list{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:560px){ .process-list{ grid-template-columns:1fr; } }
.process-item{ position:relative; padding-top:20px; border-top:2px solid var(--grey-light); }
.process-item b.num{
  font-family:var(--font-mono); font-size:13px; color:var(--green-deep);
  display:block; margin-bottom:14px;
}
.process-item h4{ font-size:16.5px; margin-bottom:8px; }
.process-item p{ font-size:14px; color:var(--ink-60); }

/* =========================================================
   RECHNER (interactive signature element)
   ========================================================= */
.rechner{
  background:var(--gradient-brand); color:var(--white); position:relative; overflow:hidden;
}
.rechner-card{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-m);
  padding:44px;
  backdrop-filter:blur(6px);
  display:grid; grid-template-columns:1fr 1fr; gap:44px; align-items:center;
}
@media (max-width:860px){ .rechner-card{ grid-template-columns:1fr; padding:30px 24px; } }

.field{ margin-bottom:22px; }
.field label{ display:flex; justify-content:space-between; font-size:13.5px; color:var(--grey-light); margin-bottom:10px; }
.field label b{ font-family:var(--font-mono); color:var(--lime); font-weight:500; }
.field input[type=range]{
  width:100%; appearance:none; height:4px; border-radius:2px;
  background:rgba(255,255,255,.25); outline:none;
}
.field input[type=range]::-webkit-slider-thumb{
  appearance:none; width:18px; height:18px; border-radius:50%;
  background:var(--lime); border:3px solid var(--graphite); cursor:pointer;
}
.field input[type=range]::-moz-range-thumb{
  width:18px; height:18px; border-radius:50%;
  background:var(--lime); border:3px solid var(--graphite); cursor:pointer;
}
.rechner-result{
  background:rgba(0,0,0,.22); border-radius:var(--radius-m); padding:30px;
}
.rechner-result .big{
  font-family:var(--font-mono); font-size:44px; color:var(--lime); line-height:1;
}
.rechner-result .big span{ font-size:18px; color:var(--grey-light); }
.rechner-result .label{ font-size:13px; color:var(--grey-light); opacity:.8; margin-top:6px; }
.rechner-result .divider{ height:1px; background:rgba(255,255,255,.14); margin:22px 0; }
.rechner-note{ font-size:12.5px; color:var(--grey-light); opacity:.7; margin-top:18px; }

/* =========================================================
   REFERENZEN / testimonial strip
   ========================================================= */
.quote-block{
  max-width:760px; margin:0 auto; text-align:center;
}
.quote-block p{
  font-family:var(--font-display); font-size:clamp(20px,2.6vw,28px); color:var(--graphite);
}
.quote-block footer{ margin-top:22px; font-size:14px; color:var(--ink-60); }

/* =========================================================
   KONTAKT
   ========================================================= */
.kontakt-grid{
  display:grid; grid-template-columns:.85fr 1.15fr; gap:60px;
}
@media (max-width:920px){ .kontakt-grid{ grid-template-columns:1fr; gap:44px; } }

.kontakt-info dl{ margin-top:30px; }
.kontakt-info .info-row{ display:flex; gap:16px; margin-bottom:24px; }
.kontakt-info .info-row svg{ width:20px; height:20px; stroke:var(--green-deep); flex:none; margin-top:2px; }
.kontakt-info .info-row b{ display:block; font-size:15px; }
.kontakt-info .info-row span{ font-size:14.5px; color:var(--ink-60); }

.form-grid{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }
@media (max-width:560px){ .form-grid{ grid-template-columns:1fr; } }
.form-grid .full{ grid-column:1/-1; }

.form-field label{ display:block; font-size:13.5px; font-weight:600; margin-bottom:8px; }
.form-field input, .form-field select, .form-field textarea{
  width:100%; padding:13px 14px; border:1.5px solid #D8DEE2; border-radius:var(--radius-s);
  font-family:inherit; font-size:15px; background:var(--white); color:var(--ink);
  transition:border-color .18s ease, box-shadow .18s ease;
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus{
  border-color:var(--green); box-shadow:0 0 0 4px rgba(76,175,80,.15); outline:none;
}
.form-field textarea{ resize:vertical; min-height:120px; }
.consent{ display:flex; gap:10px; align-items:flex-start; font-size:13.5px; color:var(--ink-60); }
.consent input{ margin-top:3px; }
.hp-field{ position:absolute; left:-9999px; opacity:0; }

#form-status{
  margin-top:18px; padding:14px 16px; border-radius:var(--radius-s); font-size:14.5px; display:none;
}
#form-status.ok{ display:block; background:#E7F5E8; color:var(--green-deep); }
#form-status.err{ display:block; background:#FBE9E7; color:#B3261E; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer{ background:var(--graphite); color:var(--grey-light); padding:64px 0 0; position:relative; overflow:hidden; }
.footer-grid{
  display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px;
  padding-bottom:48px; border-bottom:1px solid rgba(255,255,255,.1);
  position:relative; z-index:1;
}
@media (max-width:860px){ .footer-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:520px){ .footer-grid{ grid-template-columns:1fr; } }
.footer-grid h5{
  font-family:var(--font-mono); font-size:12px; letter-spacing:.12em; text-transform:uppercase;
  color:var(--lime); margin-bottom:18px;
}
.footer-grid li{ margin-bottom:10px; font-size:14.5px; color:var(--grey-light); opacity:.85; }
.footer-grid a:hover{ color:var(--lime); }
.footer-bottom{
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:10px;
  padding:24px 0; font-size:13px; color:var(--grey-mid); position:relative; z-index:1;
}
.footer-ribbon{ position:absolute; right:-30px; bottom:-40px; width:220px; height:220px; opacity:.5; pointer-events:none; }

.back-to-top{
  position:fixed; right:24px; bottom:24px; z-index:40;
  width:46px; height:46px; border-radius:50%;
  background:var(--graphite); color:var(--white);
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 10px 24px -8px rgba(0,0,0,.4);
  opacity:0; pointer-events:none; transform:translateY(8px);
  transition:opacity .2s ease, transform .2s ease;
}
.back-to-top.show{ opacity:1; pointer-events:auto; transform:translateY(0); }
.back-to-top svg{ width:18px; height:18px; stroke:var(--lime); }

/* Legal / subpages */
.page-hero{
  position:relative; overflow:hidden;
  background:linear-gradient(115deg, #12181c 0%, #1B2329 55%, #243028 100%);
  color:var(--white);
  padding:64px 0 48px;
}
.page-hero::before{
  content:""; position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse at 80% 20%, black 0%, transparent 65%);
  pointer-events:none;
}
.page-hero .wrap{ position:relative; z-index:1; }
.page-hero .eyebrow{ color:var(--lime); }
.page-hero h1{
  font-size:clamp(28px, 4vw, 44px);
  margin-top:14px; color:var(--white);
}
.page-hero-lead{
  margin-top:14px; max-width:52ch;
  color:var(--grey-light); opacity:.85; font-size:16.5px;
}
.legal-tabs{
  display:flex; gap:10px; flex-wrap:wrap; margin-top:28px;
}
.legal-tabs a{
  padding:10px 16px; border-radius:var(--radius-s);
  border:1.5px solid rgba(255,255,255,.18);
  color:var(--grey-light); font-size:14px; font-weight:600;
  transition:border-color .18s ease, color .18s ease, background .18s ease;
}
.legal-tabs a:hover{ border-color:var(--lime); color:var(--lime); }
.legal-tabs a.is-active{
  background:var(--gradient-ribbon); border-color:transparent; color:var(--graphite);
}

.legal-section{
  background:var(--grey-light);
  padding:56px 0 96px;
}
.legal-panel{
  background:var(--white);
  border:1px solid #E4E8EA;
  border-radius:var(--radius-m);
  padding:clamp(28px, 4vw, 48px);
  box-shadow:var(--shadow-card);
  max-width:820px;
}
.legal-body h2{
  font-family:var(--font-display);
  font-size:clamp(18px, 2.2vw, 22px);
  margin:34px 0 12px; color:var(--ink);
  letter-spacing:-0.01em;
}
.legal-body h2:first-child{ margin-top:0; }
.legal-body p, .legal-body li{
  font-size:15.5px; color:var(--ink-60); margin-bottom:10px; line-height:1.65;
}
.legal-body a{ color:var(--green-deep); font-weight:600; }
.legal-body a:hover{ color:var(--green); }
.legal-body ul, .legal-body ol{ margin:8px 0 16px 1.25em; padding:0; list-style:disc; }
.legal-body em{ color:var(--ink-40); font-size:14px; }

/* reveal-on-scroll */
.reveal{ opacity:0; transform:translateY(18px); transition:opacity .6s ease, transform .6s ease; }
.reveal.in{ opacity:1; transform:translateY(0); }