/* Werkbucht – Webseite. Keine externen Schriften, keine CDNs. */
:root {
  --blau: #1e3a5f;
  --blau-dunkel: #142a46;
  --blau-hell: #e9eff6;
  --akzent: #e8a020;
  --akzent-text: #9a5b00;
  --text: #1c2430;
  --text-leise: #4a5868;
  --linie: #d9e1ea;
  --hintergrund: #ffffff;
  --flaeche: #f5f7fa;
  --radius: 14px;
  --schatten: 0 1px 2px rgba(20, 42, 70, .06), 0 8px 24px rgba(20, 42, 70, .08);
  --breite: 72rem;
  --schrift: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Liberation Sans", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  font-family: var(--schrift);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--hintergrund);
}
img, svg { max-width: 100%; height: auto; }
h1, h2, h3 { line-height: 1.2; color: var(--blau); margin: 0 0 .6em; }
h1 { font-size: clamp(2rem, 4.5vw, 3.1rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); letter-spacing: -.01em; }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
a { color: var(--blau); text-underline-offset: .18em; }
a:hover { color: var(--akzent-text); }
:focus-visible { outline: 3px solid var(--akzent); outline-offset: 3px; border-radius: 4px; }

.skip-link {
  position: absolute; left: 1rem; top: -4rem; z-index: 100;
  background: var(--blau); color: #fff; padding: .6rem 1rem; border-radius: 8px;
}
.skip-link:focus { top: 1rem; color: #fff; }

.wrap { width: 100%; max-width: var(--breite); margin: 0 auto; padding: 0 1.25rem; }
.section { padding: clamp(3.5rem, 8vw, 6rem) 0; scroll-margin-top: 4.25rem; }
.section--flaeche { background: var(--flaeche); }
.section--blau { background: var(--blau); color: #e4ebf3; }
.section--blau h2, .section--blau h3 { color: #fff; }
.section-kopf { max-width: 44rem; margin-bottom: 2.5rem; }
.section-kopf p { color: var(--text-leise); font-size: 1.125rem; }
.section--blau .section-kopf p { color: #c9d6e4; }
.dachzeile {
  display: inline-block; font-size: .85rem; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; color: var(--akzent-text); margin-bottom: .6rem;
}
.section--blau .dachzeile { color: var(--akzent); }

/* Kopfzeile */
.kopf {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid var(--linie);
}
@supports (backdrop-filter: blur(8px)) {
  .kopf { background: rgba(255, 255, 255, .85); backdrop-filter: blur(8px); }
}
.kopf .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 4.25rem; }
.marke { display: inline-flex; align-items: center; text-decoration: none; }
.marke img { display: block; width: 168px; height: auto; }
.nav { display: flex; align-items: center; gap: .25rem; }
.nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: .25rem; flex-wrap: wrap; }
.nav a {
  display: block; padding: .5rem .7rem; border-radius: 8px;
  text-decoration: none; color: var(--text); font-weight: 500; font-size: .98rem;
}
.nav a:hover { background: var(--blau-hell); color: var(--blau); }
.nav-knopf { display: none; }

@media (max-width: 960px) {
  .js .nav-knopf {
    display: inline-flex; align-items: center; gap: .5rem;
    font: inherit; font-weight: 600; color: var(--blau);
    background: var(--blau-hell); border: 0; border-radius: 10px; padding: .55rem .9rem; cursor: pointer;
  }
  .js .nav ul {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; background: #fff; border-bottom: 1px solid var(--linie);
    padding: .5rem 1.25rem 1rem; box-shadow: var(--schatten);
  }
  .js .nav.offen ul { display: flex; }
  .js .nav a { padding: .8rem .5rem; font-size: 1.05rem; border-bottom: 1px solid var(--flaeche); }
  .nav .knopf { margin-top: .5rem; text-align: center; }
  /* ohne JavaScript: Menü umbrechen */
  html:not(.js) .kopf .wrap { flex-wrap: wrap; padding-bottom: .5rem; }
}

/* Knöpfe */
.knopf {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .85rem 1.35rem; border-radius: 10px; font-weight: 700; text-decoration: none;
  border: 2px solid transparent; line-height: 1.2; min-height: 48px;
}
.knopf--primaer { background: var(--akzent); color: var(--blau-dunkel); }
.knopf--primaer:hover { background: #f0b03c; color: var(--blau-dunkel); }
.knopf--rand { border-color: var(--blau); color: var(--blau); background: transparent; }
.knopf--rand:hover { background: var(--blau); color: #fff; }
.nav .knopf { padding: .55rem 1rem; min-height: 0; color: var(--blau-dunkel); font-weight: 700; }
.nav .knopf:hover { background: #f0b03c; color: var(--blau-dunkel); }

/* Hero */
.hero { padding: clamp(2.5rem, 6vw, 5rem) 0 clamp(3rem, 6vw, 5rem); background: linear-gradient(180deg, var(--blau-hell) 0%, #fff 100%); overflow: hidden; }
.hero .wrap { display: grid; grid-template-columns: 1.05fr .95fr; gap: 3rem; align-items: center; }
.hero-text p.lead { font-size: 1.25rem; color: var(--text-leise); max-width: 34rem; }
.hero-knoepfe { display: flex; flex-wrap: wrap; gap: .75rem; margin: 1.75rem 0 1.5rem; }
.hero-punkte { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: .5rem 1.25rem; color: var(--text-leise); font-size: .98rem; }
.hero-punkte li { display: flex; align-items: center; gap: .4rem; }
.hero-punkte svg { width: 1.1rem; height: 1.1rem; color: var(--akzent-text); flex: none; }
.hero-bild { display: flex; gap: 1rem; align-items: flex-start; }
@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 2rem; }
  .hero-bild { min-height: 0; }
}

/* Mock-Geräte (gestaltete Platzhalter, keine echten Daten) */
.mock { background: #fff; border: 1px solid var(--linie); border-radius: 18px; box-shadow: var(--schatten); }
.mock-handy { flex: 0 0 255px; padding: 14px; border-radius: 30px; border: 8px solid var(--blau-dunkel); background: #f3f6fa; }
.mock-tablet { flex: 1 1 auto; min-width: 0; margin-top: 4.5rem; padding: 16px 16px 12px; border: 10px solid #2b3a4c; border-radius: 22px; }
.mock-kopf { display: flex; align-items: center; gap: .5rem; font-size: .8rem; font-weight: 700; color: var(--blau); padding-bottom: .5rem; border-bottom: 1px solid var(--linie); margin-bottom: .6rem; }
.mock-kopf .punkt { width: 26px; height: 26px; border-radius: 50%; background: var(--blau); display: grid; place-items: center; }
.mock-kopf .punkt svg { width: 16px; height: 16px; }
.blase { font-size: .8rem; line-height: 1.4; padding: .5rem .7rem; border-radius: 12px; margin: 0 0 .5rem; max-width: 88%; }
.blase--ich { background: var(--blau); color: #fff; margin-left: auto; border-bottom-right-radius: 4px; }
.blase--bot { background: #fff; border: 1px solid var(--linie); border-bottom-left-radius: 4px; }
.blase .foto { display: block; height: 62px; margin-top: .4rem; border-radius: 8px; background: repeating-linear-gradient(135deg, #3c5a80 0 8px, #46668e 8px 16px); }
.mock-zeile { display: flex; justify-content: space-between; gap: .5rem; font-size: .78rem; padding: .3rem 0; border-bottom: 1px dashed var(--linie); color: var(--text-leise); }
.mock-zeile b { color: var(--text); font-weight: 600; }
.mock-titel { font-size: .95rem; font-weight: 700; color: var(--blau); margin: 0 0 .35rem; }
.mock-klein { font-size: .72rem; color: var(--text-leise); margin: 0 0 .5rem; }
.unterschrift { margin-top: .7rem; border: 1px dashed #9fb0c3; border-radius: 10px; height: 72px; position: relative; background: #fbfcfe; }
.unterschrift svg { position: absolute; left: 10px; top: 6px; width: 130px; height: 44px; }
.unterschrift span { position: absolute; right: 10px; bottom: 6px; font-size: .68rem; color: var(--text-leise); }
.status { display: inline-block; font-size: .68rem; font-weight: 700; padding: .15rem .5rem; border-radius: 999px; background: #e3f3e8; color: #1d6b3a; }
@media (max-width: 860px) {
  .hero-bild { flex-direction: column; align-items: center; }
  .mock-tablet { width: 100%; max-width: 360px; margin-top: 0; flex: none; }
  .mock-handy { width: 100%; max-width: 320px; flex: none; }
}

/* Karten */
.raster { display: grid; gap: 1.25rem; }
.raster--4 { grid-template-columns: repeat(4, 1fr); }
.raster--3 { grid-template-columns: repeat(3, 1fr); }
.raster--2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 1000px) { .raster--4 { grid-template-columns: repeat(2, 1fr); } .raster--3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .raster--4, .raster--3, .raster--2 { grid-template-columns: 1fr; } }
.karte { background: #fff; border: 1px solid var(--linie); border-radius: var(--radius); padding: 1.5rem; }
.karte p { color: var(--text-leise); margin: 0; }
.karte ul { margin: 0; padding-left: 1.1rem; color: var(--text-leise); }
.karte li { margin: .25rem 0; }
.symbol { width: 48px; height: 48px; border-radius: 12px; background: var(--blau-hell); color: var(--blau); display: grid; place-items: center; margin-bottom: 1rem; }
.symbol svg { width: 26px; height: 26px; }

/* Ablauf auf der Baustelle */
.schritte { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 1rem; counter-reset: schritt; }
.schritte li { position: relative; background: #fff; border: 1px solid var(--linie); border-radius: var(--radius); padding: 1.25rem 1.1rem; counter-increment: schritt; }
.schritte li::before {
  content: counter(schritt); position: absolute; top: -14px; left: 1.1rem;
  width: 28px; height: 28px; border-radius: 50%; background: var(--akzent); color: var(--blau-dunkel);
  font-weight: 800; font-size: .9rem; display: grid; place-items: center;
}
.schritte h3 { margin-top: .4rem; font-size: 1.05rem; }
.schritte p { font-size: .95rem; color: var(--text-leise); margin: 0; }
.schritte .symbol { width: 40px; height: 40px; margin-bottom: .6rem; }
.schritte .symbol svg { width: 22px; height: 22px; }
@media (max-width: 1000px) { .schritte { grid-template-columns: repeat(2, 1fr); gap: 1.6rem 1rem; } }
@media (max-width: 560px) { .schritte { grid-template-columns: 1fr; } }

.mock-reihe { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; margin-top: 2.5rem; }
.mock-reihe .mock { padding: 1.1rem; }
.mock-reihe figcaption { font-size: .85rem; color: var(--text-leise); margin-top: .75rem; }
.mock-reihe figure { margin: 0; display: flex; flex-direction: column; }
.mock-reihe figure .mock { flex: 1; }
.girocode { width: 64px; height: 64px; flex: none; }
.rechnung-fuss { display: flex; align-items: center; gap: .75rem; margin-top: .6rem; }
.rechnung-fuss p { font-size: .72rem; color: var(--text-leise); margin: 0; }
@media (max-width: 900px) { .mock-reihe { grid-template-columns: 1fr; max-width: 420px; } }

/* Funktionen */
.funktionen .karte h3 { display: flex; align-items: center; gap: .6rem; }
.funktionen .karte h3 svg { width: 22px; height: 22px; color: var(--akzent-text); flex: none; }

/* Sicherheit */
.sicher-liste { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem 2rem; }
.sicher-liste li { display: flex; gap: .9rem; align-items: flex-start; }
.sicher-liste svg { width: 26px; height: 26px; color: var(--akzent); flex: none; margin-top: .15rem; }
.sicher-liste strong { color: #fff; display: block; }
@media (max-width: 760px) { .sicher-liste { grid-template-columns: 1fr; } }
.hinweis-box {
  margin-top: 2.5rem; padding: 1.25rem 1.5rem; border-radius: var(--radius);
  background: rgba(255, 255, 255, .07); border: 1px solid rgba(255, 255, 255, .2);
}
.hinweis-box h3 { font-size: 1.05rem; margin-bottom: .4rem; }
.hinweis-box p { margin: 0; color: #d4dfeb; }

/* Einführung */
.einfuehrung { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.einfuehrung li { background: #fff; border: 1px solid var(--linie); border-radius: var(--radius); padding: 1.5rem; border-top: 4px solid var(--akzent); }
.einfuehrung .nr { font-size: .85rem; font-weight: 700; color: var(--akzent-text); letter-spacing: .05em; text-transform: uppercase; }
.einfuehrung p { color: var(--text-leise); margin: 0; }
@media (max-width: 800px) { .einfuehrung { grid-template-columns: 1fr; } }
.preis-box { margin-top: 1.75rem; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; background: var(--blau-hell); border-radius: var(--radius); padding: 1.25rem 1.5rem; }
.preis-box p { margin: 0; flex: 1 1 28rem; }
.preis-box strong { color: var(--blau); font-size: 1.15rem; }

/* FAQ */
.faq { max-width: 50rem; }
.faq details { border: 1px solid var(--linie); border-radius: 12px; background: #fff; margin-bottom: .75rem; }
.faq summary {
  cursor: pointer; list-style: none; padding: 1rem 3rem 1rem 1.25rem; font-weight: 600; color: var(--blau);
  position: relative; min-height: 48px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 1.1rem; top: 50%; transform: translateY(-50%);
  font-size: 1.5rem; font-weight: 400; color: var(--akzent-text);
}
.faq details[open] summary::after { content: "–"; }
.faq details > div { padding: 0 1.25rem 1.1rem; color: var(--text-leise); }
.faq details > div p:last-child { margin: 0; }

/* Kontakt */
.kontakt { display: grid; grid-template-columns: 1.2fr .8fr; gap: 2rem; align-items: center; }
.kontakt-karte { background: #fff; color: var(--text); border-radius: var(--radius); padding: 1.75rem; }
.kontakt-karte dl { margin: 0 0 1.25rem; }
.kontakt-karte dt { font-size: .85rem; color: var(--text-leise); }
.kontakt-karte dd { margin: 0 0 .75rem; font-weight: 600; }
.kontakt-karte .knopf { width: 100%; }
.kontakt ul { padding-left: 1.2rem; }
.kontakt li { margin: .3rem 0; }
@media (max-width: 800px) { .kontakt { grid-template-columns: 1fr; } }

.platzhalter { background: #fff3cd; color: #6b4b00; padding: 0 .25em; border-radius: 4px; font-weight: 600; }

/* Fußzeile */
.fuss { background: var(--blau-dunkel); color: #c3d0de; padding: 2.5rem 0; font-size: .95rem; }
.fuss .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1.25rem; align-items: center; }
.fuss a { color: #fff; }
.fuss a:hover { color: var(--akzent); }
.fuss ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 1.25rem; }
.fuss .klein { color: #9fb1c5; font-size: .88rem; }

/* Rechtstexte */
.recht { max-width: 48rem; padding: 3rem 1.25rem 4rem; margin: 0 auto; }
.recht h1 { font-size: 2rem; }
.recht h2 { font-size: 1.3rem; margin-top: 2rem; }
.recht address { font-style: normal; }
.entwurf-banner { background: #fff3cd; border: 1px solid #f0d68a; color: #5c4100; border-radius: 10px; padding: .9rem 1.1rem; margin-bottom: 2rem; }

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

@media print {
  .kopf, .nav-knopf, .hero-knoepfe, .hero-bild { display: none !important; }
  .section--blau { background: #fff; color: #000; }
  .section--blau h2, .section--blau h3, .sicher-liste strong { color: #000; }
}