/* ============================================================
   Energiegemeinschaft HW2 UW Krems — Design System
   Entwurf · Waldfilm.at
   ============================================================ */

:root {
  --green-900: #0b3d2e;
  --green-800: #10513d;
  --green-700: #15654c;
  --green-600: #1b7a5b;
  --green-500: #22946e;
  --green-100: #e3f3ec;
  --green-50:  #f2faf6;
  --sun-500:   #f7b32b;
  --sun-400:   #fcc652;
  --sun-100:   #fef3d8;
  --ink-900:   #14211c;
  --ink-700:   #34443d;
  --ink-500:   #5c6b64;
  --ink-300:   #9aa8a1;
  --paper:     #ffffff;
  --paper-alt: #f6f9f7;
  --line:      #e2eae5;
  --radius:    18px;
  --radius-sm: 12px;
  --shadow-sm: 0 1px 3px rgba(11, 61, 46, .08);
  --shadow-md: 0 10px 30px -10px rgba(11, 61, 46, .18);
  --shadow-lg: 0 24px 60px -20px rgba(11, 61, 46, .28);
  --max-w:     1120px;
  --font: "Avenir Next", "Segoe UI", "Helvetica Neue", system-ui, -apple-system, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  font-family: var(--font);
  color: var(--ink-900);
  background: var(--paper);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }

a { color: var(--green-600); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px; gap: 16px;
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none !important; }
.brand-mark {
  width: 44px; height: 44px; border-radius: 12px; flex: none;
  background: linear-gradient(135deg, var(--green-600), var(--green-800));
  display: grid; place-items: center;
  box-shadow: var(--shadow-sm);
}
.brand-mark svg { width: 26px; height: 26px; }
.brand-name { font-weight: 700; font-size: 17px; color: var(--ink-900); line-height: 1.15; }
.brand-name small { display: block; font-size: 11.5px; font-weight: 600; color: var(--ink-500); letter-spacing: .04em; text-transform: uppercase; }

.main-nav { display: flex; align-items: center; gap: 26px; }
.main-nav a { color: var(--ink-700); font-weight: 600; font-size: 15px; }
.main-nav a:hover { color: var(--green-700); text-decoration: none; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px;
  font-weight: 700; font-size: 15px; line-height: 1;
  border: none; cursor: pointer; text-decoration: none !important;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn-primary { background: var(--sun-500); color: var(--green-900); box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--sun-400); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-ghost { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,.55); }
.btn-ghost:hover { background: rgba(255,255,255,.12); }
.btn-outline { background: transparent; color: var(--green-700); border: 1.5px solid var(--green-600); }
.btn-outline:hover { background: var(--green-50); }
.btn-lg { padding: 15px 30px; font-size: 16.5px; }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle svg { width: 26px; height: 26px; stroke: var(--ink-900); }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(247,179,43,.28), transparent 60%),
    radial-gradient(700px 500px at -10% 110%, rgba(34,148,110,.35), transparent 60%),
    linear-gradient(160deg, var(--green-900) 0%, var(--green-700) 70%, var(--green-600) 100%);
  color: #fff;
}
.hero .wrap {
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px;
  align-items: center; padding-top: 84px; padding-bottom: 96px;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.25);
  padding: 7px 15px; border-radius: 999px;
  font-size: 13.5px; font-weight: 600; letter-spacing: .02em;
  margin-bottom: 22px;
}
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--sun-500); box-shadow: 0 0 0 4px rgba(247,179,43,.25); }
.hero h1 { font-size: clamp(34px, 5vw, 54px); line-height: 1.12; letter-spacing: -.02em; font-weight: 800; }
.hero h1 em { font-style: normal; color: var(--sun-400); }
.hero p.lead { margin-top: 20px; font-size: 18.5px; color: rgba(255,255,255,.85); max-width: 54ch; }
.hero-cta { margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap; }
.hero-note { margin-top: 18px; font-size: 13.5px; color: rgba(255,255,255,.6); }

.hero-card {
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.22);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 28px;
  box-shadow: var(--shadow-lg);
}
.hero-card h3 { font-size: 15px; text-transform: uppercase; letter-spacing: .08em; color: rgba(255,255,255,.7); font-weight: 700; margin-bottom: 18px; }
.stat-row { display: flex; justify-content: space-between; align-items: baseline; padding: 13px 0; border-bottom: 1px solid rgba(255,255,255,.14); gap: 12px; }
.stat-row:last-child { border-bottom: none; }
.stat-row .label { font-size: 14.5px; color: rgba(255,255,255,.8); }
.stat-row .value { font-size: 22px; font-weight: 800; color: #fff; white-space: nowrap; }
.stat-row .value small { font-size: 13px; font-weight: 600; color: rgba(255,255,255,.65); margin-left: 3px; }
.stat-row .value.sun { color: var(--sun-400); }

/* ---------- Sections ---------- */
section { padding: 88px 0; }
section.alt { background: var(--paper-alt); }
.kicker {
  display: inline-block; font-size: 13px; font-weight: 800;
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--green-600); margin-bottom: 12px;
}
h2.section-title { font-size: clamp(28px, 3.6vw, 40px); letter-spacing: -.02em; line-height: 1.15; font-weight: 800; max-width: 24ch; }
.section-intro { margin-top: 16px; font-size: 17px; color: var(--ink-500); max-width: 62ch; }
.section-head.center { text-align: center; }
.section-head.center h2, .section-head.center .section-intro { margin-left: auto; margin-right: auto; }

/* ---------- Feature grid ---------- */
.grid { display: grid; gap: 22px; margin-top: 48px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: transform .18s ease, box-shadow .18s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.card .icon {
  width: 52px; height: 52px; border-radius: 14px;
  background: var(--green-100); color: var(--green-700);
  display: grid; place-items: center; margin-bottom: 18px;
}
.card .icon.sun { background: var(--sun-100); color: #b97d0a; }
.card .icon svg { width: 26px; height: 26px; }
.card h3 { font-size: 18.5px; font-weight: 700; margin-bottom: 8px; letter-spacing: -.01em; }
.card p { font-size: 15px; color: var(--ink-500); }

/* ---------- Steps ---------- */
.steps { counter-reset: step; }
.step { position: relative; padding: 36px 40px 34px; }
.step-num {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--green-700); color: #fff;
  display: grid; place-items: center;
  font-weight: 800; font-size: 18px; margin-bottom: 16px;
}
.step h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.step p { font-size: 15px; color: var(--ink-500); }

/* ---------- Tarif table ---------- */
.tarif-card {
  margin-top: 48px; background: var(--paper);
  border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow-md);
}
.tarif-card table { width: 100%; border-collapse: collapse; }
.tarif-card th, .tarif-card td { padding: 17px 26px; text-align: left; font-size: 15.5px; }
.tarif-card thead th {
  background: var(--green-800); color: #fff; font-size: 13px;
  text-transform: uppercase; letter-spacing: .07em;
}
.tarif-card tbody tr { border-top: 1px solid var(--line); }
.tarif-card tbody tr:nth-child(even) { background: var(--green-50); }
.tarif-card td.num { font-weight: 800; font-size: 17px; color: var(--green-800); white-space: nowrap; }
.tarif-card td.num small { font-weight: 600; font-size: 12.5px; color: var(--ink-500); }
.tarif-note { margin-top: 18px; font-size: 13.5px; color: var(--ink-500); max-width: 78ch; }
.tarif-note strong { color: var(--ink-700); }

.pill {
  display: inline-block; padding: 4px 12px; border-radius: 999px;
  font-size: 12.5px; font-weight: 700;
  background: var(--sun-100); color: #9a6b06;
}
.pill.green { background: var(--green-100); color: var(--green-700); }

/* ---------- Rechner ---------- */
.calc {
  margin-top: 48px;
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 0;
  border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-lg); border: 1px solid var(--line);
}
.calc-inputs { background: var(--paper); padding: 38px; }
.calc-inputs .field { margin-bottom: 28px; }
.calc-inputs label { display: flex; justify-content: space-between; align-items: baseline; font-weight: 700; font-size: 15px; margin-bottom: 10px; }
.calc-inputs label output { color: var(--green-700); font-size: 16px; font-weight: 800; }
input[type="range"] {
  width: 100%; height: 6px; border-radius: 3px; appearance: none; -webkit-appearance: none;
  background: linear-gradient(to right, var(--green-600) var(--fill, 50%), var(--line) var(--fill, 50%));
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  appearance: none; -webkit-appearance: none;
  width: 24px; height: 24px; border-radius: 50%;
  background: #fff; border: 3px solid var(--green-600);
  box-shadow: var(--shadow-sm); cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
  width: 18px; height: 18px; border-radius: 50%;
  background: #fff; border: 3px solid var(--green-600); cursor: pointer;
}
.calc-result {
  background: linear-gradient(160deg, var(--green-800), var(--green-600));
  color: #fff; padding: 38px;
  display: flex; flex-direction: column; justify-content: center;
}
.calc-result .label { font-size: 14px; text-transform: uppercase; letter-spacing: .08em; color: rgba(255,255,255,.7); font-weight: 700; }
.calc-result .amount { font-size: clamp(44px, 5vw, 60px); font-weight: 800; letter-spacing: -.02em; color: var(--sun-400); margin: 6px 0 2px; }
.calc-result .amount small { font-size: 20px; color: rgba(255,255,255,.8); font-weight: 700; }
.calc-result .sub { font-size: 14.5px; color: rgba(255,255,255,.75); margin-bottom: 20px; }
.calc-result ul { list-style: none; }
.calc-result li { display: flex; justify-content: space-between; font-size: 14.5px; padding: 9px 0; border-top: 1px solid rgba(255,255,255,.16); }
.calc-result li strong { font-weight: 800; }
.calc-disclaimer { margin-top: 16px; font-size: 12px; color: rgba(255,255,255,.55); }

/* ---------- Region ---------- */
.region { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items: center; margin-top: 48px; }
.region-visual {
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-md);
  background: var(--green-900);
}
.region-visual svg { width: 100%; height: auto; }
.check-list { list-style: none; margin-top: 22px; }
.check-list li { display: flex; gap: 13px; align-items: flex-start; padding: 9px 0; font-size: 16px; color: var(--ink-700); }
.check-list .check {
  flex: none; width: 24px; height: 24px; border-radius: 50%;
  background: var(--green-100); color: var(--green-700);
  display: grid; place-items: center; margin-top: 2px;
}
.check-list .check svg { width: 13px; height: 13px; }

/* ---------- Förderung ---------- */
.funding {
  margin-top: 48px; display: grid; grid-template-columns: 1fr 1fr; gap: 22px;
}
.funding-card {
  border-radius: var(--radius); padding: 32px;
  background: var(--paper); border: 1px solid var(--line); box-shadow: var(--shadow-sm);
}
.funding-card.accent { background: linear-gradient(150deg, var(--green-800), var(--green-600)); color: #fff; border: none; }
.funding-card.accent h3, .funding-card.accent p { color: #fff; }
.funding-card.accent p { color: rgba(255,255,255,.82); }
.funding-card h3 { font-size: 19px; font-weight: 800; margin-bottom: 10px; }
.funding-card p { font-size: 15px; color: var(--ink-500); }
.funding-logos { display: flex; gap: 20px; align-items: center; margin-top: 22px; flex-wrap: wrap; }
.funding-logos .logo-chip {
  background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.25);
  border-radius: 10px; padding: 8px 16px; font-size: 13.5px; font-weight: 700; color: #fff;
}
.funding-card .logo-chip.dark { background: var(--green-50); border: 1px solid var(--line); color: var(--green-800); }

/* ---------- FAQ ---------- */
.faq { max-width: 780px; margin: 48px auto 0; }
.faq details {
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius-sm); margin-bottom: 12px;
  box-shadow: var(--shadow-sm); overflow: hidden;
}
.faq summary {
  cursor: pointer; padding: 20px 24px; font-weight: 700; font-size: 16px;
  list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; font-size: 24px; font-weight: 400; color: var(--green-600);
  transition: transform .2s ease; flex: none; line-height: 1;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq .faq-body { padding: 0 24px 22px; font-size: 15px; color: var(--ink-500); }
.faq .faq-body a { font-weight: 600; }

/* ---------- CTA / Kontakt ---------- */
.contact-band {
  background:
    radial-gradient(700px 400px at 90% 0%, rgba(247,179,43,.25), transparent 55%),
    linear-gradient(150deg, var(--green-900), var(--green-700));
  color: #fff; border-radius: 24px;
  padding: 64px 56px;
  display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; align-items: center;
  box-shadow: var(--shadow-lg);
}
.contact-band h2 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; letter-spacing: -.02em; line-height: 1.15; }
.contact-band p { margin-top: 14px; color: rgba(255,255,255,.82); font-size: 16.5px; max-width: 50ch; }
.contact-box { background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.22); border-radius: var(--radius); padding: 28px; backdrop-filter: blur(8px); }
.contact-box .row { display: flex; gap: 14px; align-items: center; padding: 11px 0; }
.contact-box .row + .row { border-top: 1px solid rgba(255,255,255,.14); }
.contact-box .row svg { width: 20px; height: 20px; flex: none; color: var(--sun-400); }
.contact-box .row a { color: #fff; font-weight: 700; font-size: 15.5px; }
.contact-box .row span { color: rgba(255,255,255,.85); font-size: 15.5px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--green-900); color: rgba(255,255,255,.75); padding: 56px 0 32px; margin-top: 88px; }
.site-footer .cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 36px; }
.site-footer h4 { color: #fff; font-size: 14px; text-transform: uppercase; letter-spacing: .07em; margin-bottom: 14px; }
.site-footer a { color: rgba(255,255,255,.75); display: block; padding: 4px 0; font-size: 14.5px; }
.site-footer a:hover { color: #fff; }
.site-footer p { font-size: 14px; }
.footer-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.footer-brand .brand-mark { background: rgba(255,255,255,.12); }
.footer-brand strong { color: #fff; font-size: 16px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.15); margin-top: 40px; padding-top: 22px;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-size: 13px; color: rgba(255,255,255,.5);
}

/* ---------- Legal pages ---------- */
.legal-hero { background: linear-gradient(150deg, var(--green-900), var(--green-700)); color: #fff; padding: 64px 0; }
.legal-hero h1 { font-size: clamp(30px, 4vw, 42px); font-weight: 800; letter-spacing: -.02em; }
.legal-hero p { margin-top: 10px; color: rgba(255,255,255,.75); font-size: 16px; }
.legal-content { max-width: 820px; margin: 0 auto; padding: 64px 24px 32px; }
.legal-content h2 { font-size: 23px; font-weight: 800; margin: 42px 0 14px; letter-spacing: -.01em; }
.legal-content h2:first-child { margin-top: 0; }
.legal-content h3 { font-size: 17.5px; font-weight: 700; margin: 28px 0 10px; }
.legal-content p, .legal-content li { font-size: 15.5px; color: var(--ink-700); margin-bottom: 12px; }
.legal-content ul, .legal-content ol { padding-left: 24px; margin-bottom: 16px; }
.legal-content table { width: 100%; border-collapse: collapse; margin: 18px 0 24px; font-size: 15px; }
.legal-content th, .legal-content td { border: 1px solid var(--line); padding: 11px 14px; text-align: left; vertical-align: top; }
.legal-content th { background: var(--green-50); font-weight: 700; }
.legal-content .notice {
  background: var(--sun-100); border: 1px solid #f0d9a0; border-radius: var(--radius-sm);
  padding: 18px 22px; font-size: 14.5px; color: #6e4e07; margin-bottom: 32px;
}

/* ---------- Cookie banner ---------- */
.cookie-banner {
  position: fixed; left: 20px; right: 20px; bottom: 20px; z-index: 100;
  max-width: 560px; margin: 0 auto;
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow-lg);
  padding: 24px 26px;
  display: none;
}
.cookie-banner.visible { display: block; animation: rise .35s ease; }
@keyframes rise { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
.cookie-banner h3 { font-size: 16.5px; font-weight: 800; margin-bottom: 8px; }
.cookie-banner p { font-size: 13.5px; color: var(--ink-500); margin-bottom: 16px; }
.cookie-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.cookie-actions .btn { padding: 10px 18px; font-size: 14px; }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero .wrap { grid-template-columns: 1fr; padding-top: 56px; padding-bottom: 64px; }
  .grid.cols-3, .grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .calc, .region, .funding, .contact-band { grid-template-columns: 1fr; }
  .contact-band { padding: 44px 32px; }
  .site-footer .cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .main-nav {
    position: fixed; inset: 72px 0 auto 0;
    background: var(--paper); border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: stretch; gap: 0;
    padding: 12px 24px 20px;
    display: none; box-shadow: var(--shadow-md);
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .main-nav a:last-of-type { border-bottom: none; }
  .main-nav .btn { margin-top: 12px; }
  .nav-toggle { display: block; }
  .grid.cols-3, .grid.cols-4, .grid.cols-2 { grid-template-columns: 1fr; }
  section { padding: 60px 0; }
  .tarif-card th, .tarif-card td { padding: 13px 16px; font-size: 14px; }
  .calc-inputs, .calc-result { padding: 28px 22px; }
  .site-footer .cols { grid-template-columns: 1fr; }
}