/* ============================================================
   IPOL Konzept B — Signal Site
   Dunkel, knapp, stark, konvertierungsorientiert.
   Wer uns braucht, weiß nach 30 Sekunden, dass wir die Richtigen sind.
   CI: Blau #0069b3 · Anthrazit #171c1f · Montserrat
   ============================================================ */

:root {
  --blau: #0069b3;
  --blau-leucht: #1e90d6;
  --nacht: #14191c;
  --nacht-2: #1b2125;
  --nacht-3: #232a2f;
  --linie: rgba(255,255,255,.1);
  --text: #eef2f4;
  --text-grau: #97a4ab;
  --font: 'Montserrat', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --max: 1180px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--nacht);
  color: var(--text);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 28px; }

::selection { background: var(--blau); color: #fff; }

/* ---------- Header ---------- */
header.site {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: linear-gradient(rgba(20,25,28,.92), rgba(20,25,28,.86));
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--linie);
}
.nav { display: flex; align-items: center; height: 72px; gap: 36px; }
.nav .logo img { height: 30px; width: auto; }
.nav ul { display: flex; gap: 32px; list-style: none; margin-left: auto; }
.nav ul a { font-size: 13.5px; font-weight: 500; color: var(--text-grau); letter-spacing: .04em; text-transform: uppercase; transition: .18s; }
.nav ul a:hover { color: #fff; }
.nav .cta {
  background: var(--blau); color: #fff; font-size: 13.5px; font-weight: 700;
  padding: 12px 24px; border-radius: 3px; letter-spacing: .03em; transition: .18s; white-space: nowrap;
}
.nav .cta:hover { background: var(--blau-leucht); transform: translateY(-1px); }
.burger { display: none; background: none; border: 0; cursor: pointer; padding: 8px; margin-left: auto; }
.burger span { display: block; width: 24px; height: 2px; background: #fff; margin: 5px 0; transition: .2s; }

/* ---------- Hero ---------- */
.hero {
  min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  position: relative; overflow: hidden;
  padding-top: 72px;
}
.hero .bild {
  position: absolute; inset: 0;
  background: url('../assets/img/fab-robots-car.jpg') center/cover no-repeat;
  opacity: .38;
}
.hero .verlauf {
  position: absolute; inset: 0;
  background: linear-gradient(105deg, rgba(20,25,28,.97) 25%, rgba(20,25,28,.55) 65%, rgba(0,105,179,.18) 100%);
}
.hero .wrap { position: relative; z-index: 2; padding-top: 60px; padding-bottom: 80px; }
.hero .marke {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12px; font-weight: 700; letter-spacing: .22em; text-transform: uppercase;
  color: var(--blau-leucht); margin-bottom: 34px;
}
.hero .marke::before { content: ''; width: 36px; height: 2px; background: var(--blau); }
.hero h1 {
  font-size: clamp(40px, 6.4vw, 84px);
  line-height: 1.04; font-weight: 800; letter-spacing: -.025em;
  max-width: 15ch; margin-bottom: 34px;
}
.hero h1 .blau { color: var(--blau-leucht); }
.hero p.lead { font-size: clamp(17px, 1.6vw, 21px); color: #c4cdd2; max-width: 46ch; line-height: 1.6; margin-bottom: 46px; font-weight: 400; }
.hero .aktionen { display: flex; gap: 18px; flex-wrap: wrap; align-items: center; }
.btn {
  display: inline-block; padding: 18px 38px; border-radius: 3px;
  font-size: 15px; font-weight: 700; letter-spacing: .02em; transition: .18s; cursor: pointer; border: 0;
  font-family: var(--font);
}
.btn-blau { background: var(--blau); color: #fff; box-shadow: 0 10px 36px rgba(0,105,179,.35); }
.btn-blau:hover { background: var(--blau-leucht); transform: translateY(-2px); }
.btn-leise { color: #c4cdd2; font-weight: 500; padding: 18px 8px; font-size: 14.5px; }
.btn-leise:hover { color: #fff; }
.btn-leise svg { vertical-align: -3px; margin-left: 6px; }
.hero .runter {
  position: absolute; bottom: 34px; left: 50%; transform: translateX(-50%); z-index: 2;
  color: var(--text-grau); animation: schweben 2.2s ease-in-out infinite;
}
@keyframes schweben { 0%,100% { transform: translate(-50%, 0);} 50% { transform: translate(-50%, 8px);} }

/* ---------- Sektionen ---------- */
section { padding: 110px 0; }
.s-label {
  display: block; font-size: 12px; font-weight: 700; letter-spacing: .22em;
  text-transform: uppercase; color: var(--blau-leucht); margin-bottom: 22px;
}
.s-titel { font-size: clamp(28px, 4vw, 48px); font-weight: 800; line-height: 1.1; letter-spacing: -.02em; max-width: 24ch; }

/* Situationen */
.situationen { background: var(--nacht); border-top: 1px solid var(--linie); }
.sit-liste { margin-top: 64px; border-top: 1px solid var(--linie); counter-reset: sit; }
.sit-zeile {
  display: grid; grid-template-columns: 90px 1.1fr 1.3fr auto;
  gap: 34px; align-items: center;
  padding: 44px 10px; border-bottom: 1px solid var(--linie);
  transition: .22s; cursor: pointer;
}
.sit-zeile:hover { background: var(--nacht-2); padding-left: 26px; }
.sit-zeile .nr { font-size: 16px; font-weight: 700; color: var(--blau-leucht); }
.sit-zeile h3 { font-size: clamp(19px, 2vw, 25px); font-weight: 700; line-height: 1.25; letter-spacing: -.01em; }
.sit-zeile p { font-size: 15px; color: var(--text-grau); }
.sit-zeile .pfeil { width: 46px; height: 46px; border: 1px solid var(--linie); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--text-grau); transition: .22s; flex-shrink: 0; }
.sit-zeile:hover .pfeil { background: var(--blau); border-color: var(--blau); color: #fff; transform: rotate(-45deg); }

/* Klammer-Statement */
.klammer { background: var(--blau); color: #fff; padding: 90px 0; }
.klammer .wrap { text-align: center; max-width: 980px; }
.klammer p { font-size: clamp(22px, 3.2vw, 36px); font-weight: 700; line-height: 1.3; letter-spacing: -.015em; }
.klammer p span { opacity: .65; font-weight: 500; }

/* Leistungen kompakt */
.felder { background: var(--nacht-2); }
.felder-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--linie); border: 1px solid var(--linie); margin-top: 64px; }
.feld { background: var(--nacht-2); padding: 42px 32px; transition: .22s; position: relative; overflow: hidden; }
.feld:hover { background: var(--nacht-3); }
.feld::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 3px;
  background: var(--blau); transform: scaleX(0); transform-origin: left; transition: .25s;
}
.feld:hover::after { transform: scaleX(1); }
.feld .nr { font-size: 13px; font-weight: 700; color: var(--blau-leucht); display: block; margin-bottom: 18px; }
.feld h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; line-height: 1.3; }
.feld p { font-size: 13.5px; color: var(--text-grau); line-height: 1.6; }

/* Zahlen */
.zahlen { border-top: 1px solid var(--linie); }
.zahlen .wrap { display: grid; grid-template-columns: repeat(4, 1fr); gap: 50px; text-align: center; }
.zahl b { display: block; font-size: clamp(40px, 5vw, 64px); font-weight: 800; letter-spacing: -.03em; line-height: 1; margin-bottom: 12px; }
.zahl b em { font-style: normal; color: var(--blau-leucht); }
.zahl span { font-size: 13.5px; color: var(--text-grau); letter-spacing: .04em; }

/* Prinzip / Wie wir arbeiten */
.prinzip .schritte { display: grid; grid-template-columns: repeat(3, 1fr); gap: 50px; margin-top: 64px; }
.schritt { position: relative; padding-top: 28px; }
.schritt::before {
  content: ''; position: absolute; top: 0; left: 0; width: 54px; height: 3px; background: var(--blau);
}
.schritt h3 { font-size: 19px; font-weight: 700; margin-bottom: 12px; }
.schritt p { font-size: 14.5px; color: var(--text-grau); }

/* Proof-Zitat */
.proof { background: var(--nacht-2); border-top: 1px solid var(--linie); border-bottom: 1px solid var(--linie); }
.proof .wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.proof img { border-radius: 4px; aspect-ratio: 4/3; object-fit: cover; filter: saturate(.85); }
.proof blockquote { font-size: clamp(20px, 2.4vw, 27px); font-weight: 600; line-height: 1.4; letter-spacing: -.01em; margin-bottom: 26px; }
.proof blockquote em { color: var(--blau-leucht); font-style: normal; }
.proof cite { font-style: normal; font-size: 14px; color: var(--text-grau); }

/* Schluss-CTA */
.schluss { padding: 140px 0; text-align: center; position: relative; overflow: hidden; }
.schluss .glanz {
  position: absolute; top: -180px; left: 50%; transform: translateX(-50%);
  width: 900px; height: 500px; border-radius: 50%;
  background: radial-gradient(ellipse, rgba(0,105,179,.22), transparent 65%);
  pointer-events: none;
}
.schluss h2 { font-size: clamp(32px, 5vw, 60px); font-weight: 800; letter-spacing: -.025em; line-height: 1.08; max-width: 20ch; margin: 0 auto 24px; position: relative; }
.schluss p { color: var(--text-grau); font-size: 17px; max-width: 50ch; margin: 0 auto 48px; position: relative; }
.schluss .btn { position: relative; }
.schluss .neben { display: block; margin-top: 26px; font-size: 13.5px; color: var(--text-grau); position: relative; }
.schluss .neben a { color: #fff; border-bottom: 1px solid var(--blau); padding-bottom: 1px; }

/* Footer */
footer.site { border-top: 1px solid var(--linie); padding: 44px 0; }
footer.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; font-size: 13px; color: var(--text-grau); }
footer.site img { height: 26px; width: auto; }
footer.site .links a { margin-left: 26px; }
footer.site .links a:hover { color: #fff; }

/* ---------- Gespräch-Seite ---------- */
.g-seite { min-height: 100svh; display: grid; grid-template-columns: 1fr 1fr; padding-top: 72px; }
.g-links { padding: 80px 70px; display: flex; flex-direction: column; justify-content: center; }
.g-links h1 { font-size: clamp(30px, 3.6vw, 48px); font-weight: 800; letter-spacing: -.02em; line-height: 1.1; margin-bottom: 24px; max-width: 14ch; }
.g-links > p { color: var(--text-grau); font-size: 16.5px; max-width: 44ch; margin-bottom: 44px; }
.g-punkt { display: flex; gap: 18px; margin-bottom: 26px; align-items: flex-start; }
.g-punkt .dot { width: 30px; height: 30px; border-radius: 50%; background: rgba(0,105,179,.18); color: var(--blau-leucht); display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-weight: 700; font-size: 14px; }
.g-punkt b { display: block; font-size: 15px; margin-bottom: 3px; }
.g-punkt span { font-size: 13.5px; color: var(--text-grau); }
.g-rechts { background: var(--nacht-2); border-left: 1px solid var(--linie); padding: 80px 70px; display: flex; flex-direction: column; justify-content: center; }
form.formular .f-feld { margin-bottom: 20px; }
form.formular label { display: block; font-size: 12.5px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--text-grau); margin-bottom: 8px; }
form.formular input, form.formular select, form.formular textarea {
  width: 100%; font-family: var(--font); font-size: 15px; color: #fff;
  background: var(--nacht); border: 1px solid rgba(255,255,255,.14); border-radius: 3px;
  padding: 15px 16px; transition: .15s;
}
form.formular input::placeholder, form.formular textarea::placeholder { color: #5d6a71; }
form.formular input:focus, form.formular select:focus, form.formular textarea:focus {
  outline: none; border-color: var(--blau-leucht); box-shadow: 0 0 0 3px rgba(0,105,179,.25);
}
form.formular select { appearance: none; }
.f-hinweis { font-size: 12px; color: #5d6a71; margin: 16px 0 24px; }
.f-erfolg { display: none; background: rgba(46,160,67,.12); border: 1px solid rgba(46,160,67,.4); color: #7ee2a8; border-radius: 4px; padding: 18px 22px; font-size: 14.5px; margin-top: 22px; }

/* Klickdummy-Hinweis */
.dummy-hinweis {
  position: fixed; bottom: 18px; left: 18px; z-index: 200;
  background: rgba(255,255,255,.92); color: var(--nacht); font-size: 11.5px; letter-spacing: .03em;
  padding: 8px 14px; border-radius: 100px; pointer-events: none; font-weight: 600;
}

/* Einblendungen */
.einblenden { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.einblenden.sichtbar { opacity: 1; transform: none; }

/* ---------- Mobile ---------- */
@media (max-width: 980px) {
  .felder-grid { grid-template-columns: 1fr 1fr; }
  .zahlen .wrap { grid-template-columns: 1fr 1fr; gap: 44px; }
  .proof .wrap { grid-template-columns: 1fr; gap: 44px; }
  .g-seite { grid-template-columns: 1fr; }
  .g-links, .g-rechts { padding: 60px 32px; }
  .g-rechts { border-left: 0; border-top: 1px solid var(--linie); }
}

@media (max-width: 860px) {
  .nav { height: 64px; }
  .nav ul {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    background: var(--nacht-2); flex-direction: column; gap: 0; padding: 8px 28px 18px;
    border-bottom: 1px solid var(--linie);
  }
  .nav ul.offen { display: flex; }
  .nav ul a { display: block; padding: 14px 0; font-size: 15px; border-bottom: 1px solid var(--linie); }
  .nav .cta { margin-left: auto; padding: 10px 16px; font-size: 12.5px; }
  .burger { display: block; margin-left: 12px; }
  .nav.menue-offen .burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav.menue-offen .burger span:nth-child(2) { opacity: 0; }
  .nav.menue-offen .burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  section { padding: 70px 0; }
  .hero { min-height: 92svh; }
  .hero .verlauf { background: linear-gradient(180deg, rgba(20,25,28,.92) 0%, rgba(20,25,28,.75) 100%); }
  .sit-zeile { grid-template-columns: 1fr; gap: 12px; padding: 32px 4px; }
  .sit-zeile .pfeil { display: none; }
  .sit-zeile:hover { padding-left: 4px; }
  .prinzip .schritte { grid-template-columns: 1fr; gap: 36px; }
  .schluss { padding: 90px 0; }
  .dummy-hinweis { display: none; }
}

@media (max-width: 520px) {
  .wrap { padding: 0 22px; }
  .felder-grid { grid-template-columns: 1fr; }
  .zahlen .wrap { grid-template-columns: 1fr 1fr; gap: 36px 20px; }
  .hero .aktionen .btn-blau { width: 100%; text-align: center; }
}