/* ===== Fusion Kälte – Stylesheet ===== */
:root {
  --navy: #0d1b2a;
  --navy-2: #102a43;
  --navy-3: #16344f;
  --blue: #1e7fc0;
  --blue-light: #4ab3e8;
  --blue-soft: #eaf4fb;
  --text: #1b2b3a;
  --text-soft: #5a6b7b;
  --text-invert: #e0e8f0;
  --white: #ffffff;
  --border: #e2e9f0;
  --radius: 16px;
  --shadow: 0 18px 50px -20px rgba(13, 27, 42, 0.25);
  --shadow-sm: 0 8px 24px -12px rgba(13, 27, 42, 0.18);
  --max: 1180px;
  --header-h: 76px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }

body {
  font-family: 'Inter', 'Segoe UI', system-ui, Arial, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 14px;
}
.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.section-head.left { margin-left: 0; text-align: left; }

h1, h2, h3 { line-height: 1.18; font-weight: 800; letter-spacing: -0.02em; color: var(--navy); }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.6rem); }
h3 { font-size: 1.25rem; }
p { color: var(--text-soft); }

.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 14px 28px; border-radius: 40px;
  font-weight: 600; font-size: 0.98rem;
  cursor: pointer; border: 2px solid transparent;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease;
}
.btn-primary { background: linear-gradient(135deg, var(--blue-light), var(--blue)); color: #fff; box-shadow: 0 12px 30px -10px rgba(30,127,192,.6); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 38px -10px rgba(30,127,192,.7); }
.btn-ghost { background: transparent; color: var(--white); border-color: rgba(255,255,255,.4); }
.btn-ghost:hover { background: rgba(255,255,255,.12); border-color: #fff; }
.btn-dark { background: var(--navy); color:#fff; }
.btn-dark:hover { transform: translateY(-2px); background: var(--navy-3); }

/* ===== Header ===== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--header-h);
  display: flex; align-items: center;
  transition: background .25s ease, box-shadow .25s ease;
}
.site-header.scrolled { background: rgba(255,255,255,.96); backdrop-filter: blur(10px); box-shadow: 0 4px 24px -16px rgba(13,27,42,.5); }
.site-header .container { display: flex; align-items: center; justify-content: space-between; }
.logo { display: flex; align-items: center; gap: 11px; font-weight: 800; font-size: 1.28rem; letter-spacing: -0.02em; color: #fff; }
.site-header.scrolled .logo { color: var(--navy); }
.logo .mark {
  width: 38px; height: 38px; border-radius: 11px; flex: none;
  background: linear-gradient(135deg, var(--blue-light), var(--blue));
  display: grid; place-items: center; color: #fff; font-size: 1.2rem;
  box-shadow: 0 8px 18px -6px rgba(30,127,192,.7);
}
.logo b { font-weight: 800; }
.logo span { font-weight: 400; opacity: .85; }
.logo-img { height: 40px; width: auto; display: block; }
/* Logo-Chip: garantiert lesbar auf dunklem Hero & im Footer */
.site-header .logo, .site-footer .logo {
  background: #fff; padding: 7px 13px; border-radius: 11px;
  box-shadow: 0 8px 22px -10px rgba(13,27,42,.45);
}
.site-header.scrolled .logo { box-shadow: 0 4px 14px -10px rgba(13,27,42,.35); }
.site-footer .logo { display: inline-flex; }

.nav { display: flex; align-items: center; gap: 34px; }
.nav a { font-size: .95rem; font-weight: 500; color: rgba(255,255,255,.9); transition: color .2s; }
.site-header.scrolled .nav a { color: var(--text); }
.nav a:hover { color: var(--blue-light); }
.site-header.scrolled .nav a:hover { color: var(--blue); }
.nav .btn { padding: 10px 22px; }
.site-header.scrolled .nav .btn-ghost { color: var(--navy); border-color: var(--border); }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; width: 30px; height: 24px; position: relative; }
.nav-toggle span { position: absolute; left: 0; height: 2.5px; width: 100%; background: #fff; border-radius: 2px; transition: .25s; }
.site-header.scrolled .nav-toggle span { background: var(--navy); }
.nav-toggle span:nth-child(1){ top:0;} .nav-toggle span:nth-child(2){ top:10.5px;} .nav-toggle span:nth-child(3){ top:21px;}

/* ===== Hero ===== */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  padding: calc(var(--header-h) + 60px) 0 90px;
  color: var(--text-invert);
  background:
    radial-gradient(1100px 700px at 78% -10%, rgba(74,179,232,.28), transparent 60%),
    radial-gradient(900px 600px at 8% 110%, rgba(30,127,192,.30), transparent 55%),
    linear-gradient(160deg, #0a1622 0%, var(--navy) 45%, var(--navy-2) 100%);
  overflow: hidden;
}
.hero::after {
  content:""; position:absolute; inset:0; pointer-events:none;
  background-image: radial-gradient(rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 26px 26px; mask-image: linear-gradient(to bottom, #000, transparent 80%);
}
.hero .container { position: relative; z-index: 2; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 60px; align-items: center; }
.hero h1 { color: #fff; font-size: clamp(2.4rem, 5.4vw, 4rem); margin-bottom: 22px; }
.hero h1 .grad { background: linear-gradient(120deg, var(--blue-light), #9fe0ff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { font-size: 1.2rem; color: #aecbe2; max-width: 560px; margin-bottom: 36px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-tag { display:inline-flex; align-items:center; gap:10px; padding:8px 16px; border:1px solid rgba(255,255,255,.18); border-radius:40px; font-size:.82rem; letter-spacing:.08em; text-transform:uppercase; color:#9fe0ff; margin-bottom:26px; background:rgba(255,255,255,.04); }
.hero-tag .dot { width:8px; height:8px; border-radius:50%; background:#54e08a; box-shadow:0 0 0 4px rgba(84,224,138,.25); }

.hero-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 22px; padding: 30px; backdrop-filter: blur(8px);
}
.hero-card h4 { color:#fff; font-size:1.05rem; margin-bottom:18px; font-weight:700; }
.hero-card ul { list-style: none; display: grid; gap: 14px; }
.hero-card li { display:flex; gap:12px; align-items:flex-start; font-size:.96rem; color:#cfe2f1; }
.hero-card li .ic { color:#54e08a; flex:none; margin-top:2px; }
.hero-card .hot { margin-top:22px; padding-top:20px; border-top:1px solid rgba(255,255,255,.12); }
.hero-card .hot span { display:block; font-size:.78rem; text-transform:uppercase; letter-spacing:.12em; color:#8fb6d4; }
.hero-card .hot a { color:#fff; font-size:1.35rem; font-weight:800; }

/* ===== Stats ===== */
.stats { background: var(--navy-2); color:#fff; }
.stats .container { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; padding: 56px 24px; }
.stat { text-align: center; }
.stat .num { font-size: clamp(2rem, 4vw, 2.9rem); font-weight: 800; color:#fff; letter-spacing:-.02em; }
.stat .num span { color: var(--blue-light); }
.stat .lbl { font-size:.92rem; color:#9fbdd6; margin-top:4px; }

/* ===== Sections ===== */
section { padding: 96px 0; }
.bg-soft { background: linear-gradient(180deg, #f7fafd, #eef5fb); }

/* Services */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px 28px; transition: transform .25s ease, box-shadow .25s ease, border-color .25s;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.card .ico {
  width: 58px; height: 58px; border-radius: 15px; margin-bottom: 20px;
  display: grid; place-items: center; color: var(--blue);
  background: var(--blue-soft); font-size: 1.5rem;
}
.card h3 { margin-bottom: 10px; }
.card p { font-size: .97rem; }

/* Split feature */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split.rev .media { order: 2; }
.feature-list { list-style: none; display: grid; gap: 18px; margin-top: 28px; }
.feature-list li { display: flex; gap: 14px; align-items: flex-start; }
.feature-list .ic { flex:none; width: 30px; height: 30px; border-radius: 9px; background: var(--blue-soft); color: var(--blue); display:grid; place-items:center; font-size:.9rem; margin-top:2px; }
.feature-list b { color: var(--navy); display:block; }
.feature-list span { color: var(--text-soft); font-size:.95rem; }
.media-card {
  border-radius: 22px; overflow:hidden; position:relative; min-height: 380px;
  background: linear-gradient(160deg, var(--navy), var(--navy-3));
  box-shadow: var(--shadow); display:flex; align-items:flex-end; padding:32px; color:#fff;
}
.media-card::before { content:""; position:absolute; inset:0; background-image: radial-gradient(rgba(255,255,255,.06) 1px, transparent 1px); background-size: 22px 22px; }
.media-card .big-ico { position:absolute; top:-20px; right:-10px; font-size:13rem; opacity:.08; }
.media-card .cap { position:relative; }
.media-card .cap b { font-size:1.4rem; color:#fff; display:block; }
.media-card .cap p { color:#9fc3df; }

/* steps */
.steps { display:grid; grid-template-columns: repeat(3,1fr); gap: 26px; counter-reset: s; }
.step { background:#fff; border:1px solid var(--border); border-radius: var(--radius); padding: 30px 26px; position:relative; }
.step::before { counter-increment: s; content: "0" counter(s); font-size: 2.6rem; font-weight: 800; color: var(--blue-soft); position:absolute; top:18px; right:24px; }
.step h3 { margin-bottom: 8px; position:relative; }
.step p { font-size: .96rem; }

/* references */
.refs { display:flex; flex-wrap:wrap; gap:14px; justify-content:center; }
.ref-pill { background:#fff; border:1px solid var(--border); border-radius:40px; padding:12px 26px; font-weight:600; color:var(--navy); box-shadow: var(--shadow-sm); }

/* CTA band */
.cta-band {
  background:
    radial-gradient(700px 400px at 85% 0%, rgba(74,179,232,.35), transparent 60%),
    linear-gradient(135deg, var(--blue), var(--navy));
  color:#fff; border-radius: 28px; padding: 60px; text-align:center; box-shadow: var(--shadow);
}
.cta-band h2 { color:#fff; margin-bottom: 14px; }
.cta-band p { color:#d6eaf8; max-width: 560px; margin: 0 auto 28px; }

/* Contact */
.contact-grid { display:grid; grid-template-columns: 1fr 1fr; gap: 56px; }
.contact-info { display:grid; gap: 24px; align-content:start; }
.ci-item { display:flex; gap:16px; align-items:flex-start; }
.ci-item .ic { flex:none; width:48px; height:48px; border-radius:13px; background:var(--blue-soft); color:var(--blue); display:grid; place-items:center; font-size:1.2rem; }
.ci-item b { color: var(--navy); display:block; }
.ci-item a, .ci-item span { color: var(--text-soft); }
.form { background:#fff; border:1px solid var(--border); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow-sm); }
.form .row { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.field { margin-bottom: 16px; }
.field label { display:block; font-size:.85rem; font-weight:600; color:var(--navy); margin-bottom:6px; }
.field input, .field textarea {
  width:100%; padding:13px 15px; border:1px solid var(--border); border-radius:11px;
  font:inherit; color:var(--text); background:#fbfdff; transition:border .2s, box-shadow .2s;
}
.field input:focus, .field textarea:focus { outline:0; border-color:var(--blue-light); box-shadow:0 0 0 3px rgba(74,179,232,.18); }
.field textarea { resize: vertical; min-height: 120px; }
.form .check { display:flex; gap:10px; font-size:.85rem; color:var(--text-soft); margin-bottom:18px; }
.form .check input { margin-top:4px; }
.contact-cta { display:flex; flex-direction:column; justify-content:center; gap:16px; }
.contact-cta h3 { margin-bottom:2px; }
.contact-cta .btn { width:100%; }

/* ===== Footer ===== */
.site-footer { background: var(--navy); color:#aebfce; padding: 70px 0 30px; }
.footer-grid { display:grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; }
.site-footer .logo { color:#fff; margin-bottom: 16px; }
.site-footer p { color:#8ba3b8; font-size:.95rem; max-width: 320px; }
.site-footer h5 { color:#fff; font-size:.95rem; margin-bottom:16px; letter-spacing:.04em; }
.site-footer ul { list-style:none; display:grid; gap:10px; }
.site-footer a:hover { color:var(--blue-light); }
.footer-bottom { border-top:1px solid rgba(255,255,255,.1); margin-top:50px; padding-top:24px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; font-size:.88rem; color:#7791a7; }
.footer-bottom a:hover { color:#fff; }

/* legal pages */
.legal { padding-top: calc(var(--header-h) + 70px); }
.legal h1 { font-size: clamp(2rem,4vw,2.8rem); margin-bottom: 12px; }
.legal h2 { font-size:1.4rem; margin: 36px 0 12px; }
.legal p, .legal li { color: var(--text-soft); margin-bottom: 12px; }
.legal ul { padding-left: 22px; }
.legal a { color: var(--blue); }
.legal .container { max-width: 820px; }
.placeholder { background:#fff7e6; border:1px dashed #e0b54a; color:#8a6400; padding:2px 7px; border-radius:5px; font-size:.92em; }

/* reveal */
[data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity .6s ease, transform .6s ease; }
[data-reveal].in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { [data-reveal] { opacity:1; transform:none; transition:none; } html { scroll-behavior:auto; } }

/* ===== Responsive ===== */
@media (max-width: 980px) {
  .hero-grid, .split, .contact-grid { grid-template-columns: 1fr; }
  .split.rev .media { order: 0; }
  .cards, .steps { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats .container { grid-template-columns: repeat(2,1fr); gap: 36px 24px; }
  .hero-card { max-width: 480px; }
}
@media (max-width: 680px) {
  section { padding: 72px 0; }
  .nav { position: fixed; inset: var(--header-h) 0 auto 0; flex-direction: column; align-items: stretch; gap: 0;
    background:#fff; padding: 14px 24px 24px; box-shadow: var(--shadow); transform: translateY(-130%); transition: transform .3s ease; }
  .nav.open { transform: translateY(0); }
  .nav a { color: var(--text); padding: 13px 0; border-bottom:1px solid var(--border); }
  .nav .btn { margin-top: 12px; justify-content:center; }
  .site-header.scrolled .nav a, .nav a { color: var(--text); }
  .nav-toggle { display:block; }
  .cards, .steps { grid-template-columns: 1fr; }
  .form .row { grid-template-columns: 1fr; }
  .cta-band { padding: 40px 26px; }
  .footer-grid { grid-template-columns: 1fr; }
}