/* GSM General Service Management GmbH – Stylesheet
   Farben aus dem Firmenlogo abgeleitet. Keine externen Schriften (DSGVO). */

:root {
  --blue: #1f9bd7;
  --blue-light: #e8f5fc;
  --petrol: #2f6f93;
  --navy: #1d3445;
  --ink: #23313c;
  --muted: #5b6b77;
  --line: #dfe7ed;
  --bg: #ffffff;
  --bg-soft: #f4f8fb;
  --silver: #b9c2c9;
  --whatsapp: #25d366;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(29, 52, 69, .10);
  --max: 1160px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--petrol); }
h1, h2, h3 { color: var(--navy); line-height: 1.2; margin: 0 0 .6em; }
h1 { font-size: clamp(2rem, 4.6vw, 3.3rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.3rem); letter-spacing: -.01em; }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }

.container { width: min(var(--max), 100% - 32px); margin-inline: auto; }
.section { padding: clamp(64px, 9vw, 110px) 0; }
.section--soft { background: var(--bg-soft); }
.section__head { max-width: 680px; margin-bottom: 48px; }
.section__head--center { margin-inline: auto; text-align: center; }
.eyebrow {
  display: inline-block;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 12px;
}
.lead { font-size: 1.15rem; color: var(--muted); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 24px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  font-family: inherit;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary { background: var(--blue); color: #fff; box-shadow: 0 8px 20px rgba(31, 155, 215, .35); }
.btn--primary:hover { background: #1688c0; }
.btn--whatsapp { background: var(--whatsapp); color: #fff; }
.btn--whatsapp:hover { background: #1ebe5a; }
.btn--ghost { background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.6); }
.btn--ghost:hover { background: rgba(255,255,255,.22); }
.btn--outline { background: #fff; color: var(--navy); border-color: var(--line); }
.btn svg { width: 20px; height: 20px; flex: none; }

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header__inner { display: flex; align-items: center; justify-content: space-between; height: 76px; gap: 20px; }
.header__logo img { height: 52px; width: auto; }
.nav { display: flex; align-items: center; gap: 28px; }
.nav a { text-decoration: none; color: var(--ink); font-weight: 600; font-size: .95rem; white-space: nowrap; }
.nav a:hover { color: var(--blue); }
.nav .btn { padding: 10px 18px; font-size: .92rem; color: #fff; }
.header__phone { display: none; }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; color: var(--navy); }
.nav-toggle svg { width: 28px; height: 28px; }

@media (max-width: 1100px) {
  .nav-toggle { display: block; }
  .nav {
    position: absolute;
    top: 76px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    padding: 8px 16px 20px;
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 14px 4px; border-bottom: 1px solid var(--line); }
  .nav .btn { margin-top: 14px; border-bottom: 0; padding: 14px; }
  .header__logo img { height: 44px; }
}

/* Hero */
.hero {
  position: relative;
  color: #fff;
  background: var(--navy) url("../assets/img/hero-buero.jpg") center / cover no-repeat;
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(20, 40, 56, .93) 0%, rgba(29, 70, 100, .82) 50%, rgba(31, 155, 215, .45) 100%);
  z-index: -1;
}
.hero__inner { padding: clamp(80px, 12vw, 150px) 0 clamp(70px, 10vw, 120px); max-width: 720px; }
.hero h1 { color: #fff; }
.hero .eyebrow { color: #8fd3f4; }
.hero p { font-size: 1.18rem; color: rgba(255,255,255,.88); max-width: 600px; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; margin: 32px 0 36px; }
.hero__facts { display: flex; flex-wrap: wrap; gap: 10px 26px; list-style: none; padding: 0; margin: 0; font-size: .95rem; color: rgba(255,255,255,.9); }
.hero__facts li { display: flex; align-items: center; gap: 8px; }
.hero__facts svg { width: 18px; height: 18px; color: #8fd3f4; flex: none; }

/* Kennzahlen */
.counters { background: var(--navy); color: #fff; padding: 44px 0; }
.counters__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; text-align: center; }
.counter strong { display: block; font-size: clamp(2.4rem, 5vw, 3.4rem); font-weight: 800; line-height: 1.1; color: #fff; font-variant-numeric: tabular-nums; }
.counter strong::after { content: ""; display: block; width: 36px; height: 3px; margin: 12px auto 10px; border-radius: 2px; background: var(--blue); }
.counter > span { color: rgba(255,255,255,.78); font-size: .95rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; }
@media (max-width: 640px) { .counters__grid { grid-template-columns: 1fr; gap: 30px; } }

/* Referenzen */
.refs { padding: 40px 0; border-bottom: 1px solid var(--line); }
.refs__title { text-align: center; color: var(--muted); font-size: .9rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 34px; }
.refs__marquee {
  display: flex;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.refs__list {
  display: flex;
  align-items: center;
  gap: 64px;
  flex: none;
  min-width: max-content;
  list-style: none;
  margin: 0;
  padding: 0 32px;
  animation: refs-scroll 45s linear infinite;
}
.refs__marquee:hover .refs__list { animation-play-state: paused; }
@keyframes refs-scroll { to { transform: translateX(-100%); } }
.refs__list .logo { height: 40px; display: flex; align-items: center; flex: none; }
.refs__list .logo--raster { height: 46px; }
.refs__list img { height: 100%; width: auto; max-width: 170px; object-fit: contain; }
.refs__list .logo--wide { height: 26px; }
.refs__list .logo--square { height: 52px; }
.refs__list .logo--ctdi { height: 32px; }
@media (max-width: 560px) {
  .refs__list { gap: 44px; padding: 0 22px; animation-duration: 35s; }
  .refs__list .logo { height: 32px; }
  .refs__list .logo--raster { height: 38px; }
  .refs__list .logo--wide { height: 20px; }
  .refs__list .logo--square { height: 42px; }
  .refs__list .logo--ctdi { height: 26px; }
  .refs__list img { max-width: 140px; }
}
@media (prefers-reduced-motion: reduce) {
  .refs__marquee { -webkit-mask-image: none; mask-image: none; }
  .refs__list { animation: none; flex-wrap: wrap; justify-content: center; min-width: 0; flex: 1; gap: 32px 48px; }
  .refs__list[aria-hidden="true"] { display: none; }
}
.refs__more { text-align: center; color: var(--muted); font-size: .9rem; margin: 18px 0 0; }

/* Leistungen */
.services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.service {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow .2s ease, transform .2s ease;
}
.service:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.service img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.service__body { padding: 26px 26px 30px; display: flex; flex-direction: column; flex: 1; }
.service ul { padding: 0; margin: 0 0 22px; list-style: none; }
.service li { position: relative; padding-left: 26px; margin-bottom: 8px; color: var(--muted); font-size: .97rem; }
.service li::before {
  content: "";
  position: absolute; left: 0; top: .5em;
  width: 14px; height: 8px;
  border-left: 2.5px solid var(--blue);
  border-bottom: 2.5px solid var(--blue);
  transform: rotate(-45deg);
}
.service__link { margin-top: auto; font-weight: 700; text-decoration: none; color: var(--blue); }
.service__link:hover { text-decoration: underline; }
@media (max-width: 900px) { .services { grid-template-columns: 1fr; max-width: 560px; margin-inline: auto; } }

/* Vorteile */
.why { display: grid; grid-template-columns: 1fr 1.15fr; gap: 64px; align-items: center; }
.why__img { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.why__img img { width: 100%; height: 100%; max-height: 620px; object-fit: cover; }
.benefits { display: grid; grid-template-columns: 1fr 1fr; gap: 26px 30px; margin-top: 30px; }
.benefit { display: flex; gap: 14px; }
.benefit__icon {
  flex: none;
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--blue-light);
  color: var(--blue);
  display: grid; place-items: center;
}
.benefit__icon svg { width: 24px; height: 24px; }
.benefit h3 { font-size: 1.02rem; margin-bottom: 4px; }
.benefit p { font-size: .94rem; color: var(--muted); margin: 0; }
@media (max-width: 960px) {
  .why { grid-template-columns: 1fr; gap: 40px; }
  .why__img { max-width: 480px; }
  .why__img img { max-height: 380px; }
}
@media (max-width: 560px) { .benefits { grid-template-columns: 1fr; } }

/* Zielgruppen */
.audiences { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.audience {
  background: #fff;
  border-radius: var(--radius);
  padding: 32px 28px;
  border-top: 4px solid var(--blue);
  box-shadow: 0 4px 18px rgba(29, 52, 69, .06);
}
.audience svg { width: 38px; height: 38px; color: var(--petrol); margin-bottom: 16px; }
.audience p { color: var(--muted); font-size: .97rem; margin: 0; }
@media (max-width: 900px) { .audiences { grid-template-columns: 1fr; max-width: 560px; margin-inline: auto; } }

/* Ablauf */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; list-style: none; padding: 0; margin: 0; counter-reset: step; }
.step { position: relative; padding-top: 70px; }
.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute; top: 0; left: 0;
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--navy);
  color: #fff;
  font-weight: 800;
  font-size: 1.25rem;
  display: grid; place-items: center;
}
.step:not(:last-child)::after {
  content: "";
  position: absolute; top: 26px; left: 64px; right: -12px;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--silver) 0 8px, transparent 8px 14px);
}
.step p { color: var(--muted); font-size: .96rem; margin: 0; }
@media (max-width: 900px) {
  .steps { grid-template-columns: 1fr 1fr; gap: 36px 24px; }
  .step::after { display: none; }
}
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }

/* Über uns */
.about { max-width: 820px; margin-inline: auto; text-align: center; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 44px; }
.stat { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 16px; }
.stat strong { display: block; font-size: 1.6rem; color: var(--blue); line-height: 1.2; }
.stat span { color: var(--muted); font-size: .92rem; }
@media (max-width: 640px) { .stats { grid-template-columns: 1fr; } }

/* Kontakt */
.contact { display: grid; grid-template-columns: 1fr 1.25fr; gap: 56px; align-items: start; }
.contact__info { background: var(--navy); color: #fff; border-radius: var(--radius); padding: 40px 36px; }
.contact__info h2, .contact__info h3 { color: #fff; }
.contact__info p { color: rgba(255,255,255,.82); }
.contact__list { list-style: none; padding: 0; margin: 28px 0; }
.contact__list li { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 18px; }
.contact__list svg { width: 22px; height: 22px; color: #8fd3f4; flex: none; margin-top: 3px; }
.contact__list a { color: #fff; text-decoration: none; font-weight: 600; }
.contact__list a:hover { text-decoration: underline; }
.contact__list small { display: block; color: rgba(255,255,255,.65); font-size: .85rem; }
.contact__info .btn { width: 100%; }

.form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 40px 36px; box-shadow: var(--shadow); }
.form__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form__full { grid-column: 1 / -1; }
.field label { display: block; font-weight: 600; font-size: .92rem; margin-bottom: 6px; color: var(--navy); }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 13px 14px;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  font: inherit;
  font-size: 1rem;
  color: var(--ink);
  background: #fff;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 4px rgba(31,155,215,.15); }
.checkbox { display: flex; gap: 10px; align-items: flex-start; font-size: .9rem; color: var(--muted); }
.checkbox input { margin-top: 4px; width: 18px; height: 18px; flex: none; accent-color: var(--blue); }
.form__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.form__note { font-size: .85rem; color: var(--muted); margin: 14px 0 0; }
.form__status { margin-top: 16px; padding: 14px 16px; border-radius: 10px; font-weight: 600; display: none; }
.form__status.is-ok { display: block; background: #e7f8ee; color: #17663a; }
.form__status.is-error { display: block; background: #fdecec; color: #9b1c1c; }
@media (max-width: 960px) { .contact { grid-template-columns: 1fr; } }
@media (max-width: 560px) {
  .form__grid { grid-template-columns: 1fr; }
  .form, .contact__info { padding: 30px 22px; }
  .form__actions .btn { width: 100%; }
}

/* CTA-Band */
.cta-band { background: linear-gradient(110deg, var(--petrol), var(--blue)); color: #fff; padding: 56px 0; }
.cta-band__inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap; }
.cta-band h2 { color: #fff; margin: 0 0 6px; }
.cta-band p { margin: 0; color: rgba(255,255,255,.88); }
.cta-band .btn--primary { background: #fff; color: var(--navy); box-shadow: none; }

/* Footer */
.footer { background: #14242f; color: rgba(255,255,255,.72); padding: 56px 0 28px; font-size: .94rem; }
.footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
.footer__logo { background: #fff; display: inline-block; padding: 10px 14px; border-radius: 10px; margin-bottom: 16px; }
.footer__logo img { height: 46px; width: auto; }
.footer h3 { color: #fff; font-size: 1rem; margin-bottom: 14px; }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li { margin-bottom: 8px; }
.footer a { color: rgba(255,255,255,.85); text-decoration: none; }
.footer a:hover { color: #fff; text-decoration: underline; }
.footer__bottom { border-top: 1px solid rgba(255,255,255,.12); margin-top: 40px; padding-top: 22px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: .85rem; }
@media (max-width: 800px) { .footer__grid { grid-template-columns: 1fr; gap: 28px; } }

/* WhatsApp schwebend */
.wa-float {
  position: fixed;
  right: 20px; bottom: 20px;
  z-index: 60;
  width: 60px; height: 60px;
  border-radius: 50%;
  background: var(--whatsapp);
  color: #fff;
  display: grid; place-items: center;
  box-shadow: 0 8px 24px rgba(0,0,0,.22);
  transition: transform .15s ease;
}
.wa-float:hover { transform: scale(1.08); }
.wa-float svg { width: 32px; height: 32px; }

/* Unterseiten (Start-ups, English) */
.nav .nav__lang { font-size: .8rem; font-weight: 700; letter-spacing: .06em; padding: 4px 10px; border: 1.5px solid var(--line); border-radius: 999px; }
@media (max-width: 1100px) { .nav .nav__lang { border: 0; border-bottom: 1px solid var(--line); border-radius: 0; padding: 14px 4px; font-size: .95rem; } }
.refs__list--static { animation: none; flex: 1; flex-wrap: wrap; justify-content: center; min-width: 0; gap: 32px 56px; }
.benefits--3 { grid-template-columns: repeat(3, 1fr); gap: 32px 36px; margin-top: 0; }
@media (max-width: 900px) { .benefits--3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .benefits--3 { grid-template-columns: 1fr; } }
.audiences__more { text-align: center; margin: 36px 0 0; color: var(--muted); }
.audiences__more a { font-weight: 700; color: var(--blue); text-decoration: none; }
.audiences__more a:hover { text-decoration: underline; }
.faq { max-width: 820px; margin-inline: auto; }
.faq details { border-bottom: 1px solid var(--line); padding: 20px 0; }
.faq summary { display: flex; justify-content: space-between; gap: 20px; font-weight: 700; color: var(--navy); cursor: pointer; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--blue); font-size: 1.5rem; line-height: 1; flex: none; }
.faq details[open] summary::after { content: "−"; }
.faq details p { color: var(--muted); margin: 12px 0 0; }

/* Rechtstexte */
.legal { max-width: 820px; }
.legal h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
.legal h2 { font-size: 1.35rem; margin-top: 2em; }
.legal h3 { font-size: 1.08rem; margin-top: 1.5em; }
.legal p, .legal li { color: var(--ink); }

/* Einblend-Animation */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .service, .wa-float { transition: none; }
}

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }