/* ==========================================================================
   KBR-Fuchs – öffentliche Website
   Systemschriften (keine externen Fonts), keine Skripte, responsiv.
   ========================================================================== */
:root {
    --blau: #5179A9;
    --blau-dunkel: #2F4F78;
    --blau-hell: #EAF0F8;
    --akzent: #C2410C;
    --text: #0F172A;
    --text-leise: #475569;
    --linie: #E2E8F0;
    --grau: #F8FAFC;
    --rund: 14px;
    --schatten: 0 1px 2px rgba(15, 23, 42, .05), 0 12px 32px -12px rgba(15, 23, 42, .18);
    --serif: 'Iowan Old Style', 'Palatino Linotype', Palatino, Georgia, 'Times New Roman', serif;
    --sans: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color-scheme: light;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; font: 17px/1.6 var(--sans); color: var(--text); background: #fff; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blau-dunkel); }
h1, h2 { font-family: var(--serif); font-weight: 700; letter-spacing: -.01em; line-height: 1.12; margin: 0 0 .5em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
h3 { font-size: 1.08rem; margin: 0 0 .35em; }
p { margin: 0 0 1em; }
.wrap { width: min(1160px, 100% - 32px); margin-inline: auto; }
.schmal { width: min(780px, 100% - 32px); }

/* Kopf */
.kopf { position: sticky; top: 0; z-index: 10; background: rgba(255, 255, 255, .92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--linie); }
.kopf__inner { display: flex; align-items: center; gap: 28px; height: 68px; }
.marke { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.1rem; color: var(--text); text-decoration: none; }
.marke__logo { width: 32px; height: 32px; border-radius: 9px; background: var(--blau); color: #fff; display: grid; place-items: center; font-family: var(--sans); }
.nav { display: flex; gap: 22px; margin-right: auto; }
.nav a, .link { color: var(--text-leise); text-decoration: none; font-weight: 500; font-size: .95rem; }
.nav a:hover, .link:hover, .nav a[aria-current] { color: var(--blau-dunkel); }
.kopf__aktionen { display: flex; align-items: center; gap: 18px; }
.mobilnav { display: none; margin-left: auto; position: relative; }
.mobilnav summary { list-style: none; cursor: pointer; font-size: 1.5rem; padding: 4px 10px; }
.mobilnav summary::-webkit-details-marker { display: none; }
.mobilnav__inhalt { position: absolute; right: 0; top: 46px; width: 240px; background: #fff; border: 1px solid var(--linie); border-radius: var(--rund);
    box-shadow: var(--schatten); padding: 12px; display: flex; flex-direction: column; gap: 4px; }
.mobilnav__inhalt a { padding: 10px 12px; border-radius: 8px; text-decoration: none; color: var(--text); }
.mobilnav__inhalt a:hover { background: var(--grau); }
.mobilnav__inhalt .knopf { color: #fff; margin-top: 6px; }

/* Knöpfe */
.knopf { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 13px 24px; border-radius: 10px; border: 0;
    background: var(--blau-dunkel); color: #fff; font: 600 1rem var(--sans); text-decoration: none; cursor: pointer;
    box-shadow: 0 6px 16px -8px rgba(47, 79, 120, .7); transition: background .15s, transform .15s; }
.knopf:hover { background: #24405f; transform: translateY(-1px); }
.knopf--hell { background: #fff; color: var(--blau-dunkel); border: 1px solid var(--linie); box-shadow: none; }
.knopf--hell:hover { background: var(--grau); }
.knopf--klein { padding: 9px 16px; font-size: .93rem; }

/* Held */
.held { padding: 72px 0 56px; background: radial-gradient(1200px 500px at 85% -10%, var(--blau-hell), transparent 70%); }
.held__inner { display: grid; grid-template-columns: 1fr 1.15fr; gap: 56px; align-items: center; }
.held h1 em { font-style: normal; color: var(--blau); }
.held__text { font-size: 1.15rem; color: var(--text-leise); max-width: 34em; }
.held__knoepfe { display: flex; gap: 12px; flex-wrap: wrap; margin: 26px 0 18px; }
.plakette { display: inline-block; padding: 5px 12px; border-radius: 99px; background: var(--blau-hell); color: var(--blau-dunkel);
    font-size: .82rem; font-weight: 600; margin-bottom: 18px; }
.haken { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 6px 18px; color: var(--text-leise); font-size: .92rem; }
.haken li::before { content: '✓'; color: #15803D; font-weight: 700; margin-right: 6px; }
.haken--liste { flex-direction: column; margin: 14px 0 22px; }
.fenster { margin: 0; border-radius: var(--rund); background: #fff; border: 1px solid var(--linie); box-shadow: var(--schatten); overflow: hidden; }
.fenster__leiste { display: flex; gap: 6px; padding: 10px 12px; border-bottom: 1px solid var(--linie); background: var(--grau); }
.fenster__leiste i { width: 10px; height: 10px; border-radius: 50%; background: #CBD5E1; }

/* Abschnitte */
.abschnitt { padding: 80px 0; }
.abschnitt--grau { background: var(--grau); border-block: 1px solid var(--linie); }
.kicker { text-transform: uppercase; letter-spacing: .1em; font-size: .78rem; font-weight: 700; color: var(--blau); margin-bottom: 10px; }
.unterzeile { color: var(--text-leise); margin-top: -.3em; }
.schritte { list-style: none; padding: 0; margin: 36px 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.schritte li { padding: 22px; border: 1px solid var(--linie); border-radius: var(--rund); background: #fff; }
.schritte__nr { display: inline-grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; background: var(--blau-hell);
    color: var(--blau-dunkel); font-weight: 700; margin-bottom: 12px; }
.schritte p, .karte p, .liste-kurz p { color: var(--text-leise); font-size: .95rem; margin: 0; }
.karten { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 32px; }
.karte { background: #fff; border: 1px solid var(--linie); border-radius: var(--rund); padding: 22px; }
.karte h3::before { content: ''; display: block; width: 28px; height: 4px; border-radius: 2px; background: var(--blau); margin-bottom: 14px; }
.galerie { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 28px; }
.galerie figure { margin: 0; }
.galerie img { border-radius: 10px; border: 1px solid var(--linie); box-shadow: var(--schatten); transition: transform .2s; }
.galerie a:hover img { transform: scale(1.02); }
.galerie figcaption { font-size: .9rem; color: var(--text-leise); margin-top: 10px; }

/* Preise */
.preise { display: grid; grid-template-columns: repeat(2, minmax(0, 360px)); gap: 22px; margin-top: 30px; }
.preis { position: relative; background: #fff; border: 1px solid var(--linie); border-radius: var(--rund); padding: 28px; display: flex; flex-direction: column; }
.preis .knopf { margin-top: auto; }
.preis--empfohlen { border: 2px solid var(--blau); box-shadow: var(--schatten); }
.preis .plakette { position: absolute; top: -13px; left: 24px; margin: 0; background: var(--blau); color: #fff; }
.preis__betrag { margin: 0 0 6px; color: var(--text-leise); }
.preis__betrag strong { font-family: var(--serif); font-size: 2.4rem; color: var(--text); }

/* Partner / Über uns */
.zweispaltig { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
.liste-kurz { display: grid; gap: 18px; margin-top: 18px; }

/* FAQ */
.faq details { background: #fff; border: 1px solid var(--linie); border-radius: 12px; margin-bottom: 10px; }
.faq summary { cursor: pointer; padding: 16px 20px; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; color: var(--blau); font-size: 1.3rem; line-height: 1; }
.faq details[open] summary::after { content: '–'; }
.faq details p { padding: 0 20px 18px; color: var(--text-leise); margin: 0; }

/* Aufruf */
.aufruf { text-align: center; background: linear-gradient(135deg, var(--blau-dunkel), var(--blau)); color: #fff; }
.aufruf p { color: rgba(255, 255, 255, .85); }
.aufruf .knopf { background: #fff; color: var(--blau-dunkel); }

/* Unterseiten, Texte, Formulare */
.seite { padding-top: 56px; }
.text h2 { font-family: var(--sans); font-size: 1.15rem; font-weight: 700; margin-top: 1.6em; }
.text p { color: #334155; }
.klein { font-size: .85rem; color: var(--text-leise); }
.kasten { background: #fff; border: 1px solid var(--linie); border-radius: var(--rund); padding: 28px; box-shadow: var(--schatten); }
.formular { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.feld { display: flex; flex-direction: column; gap: 6px; }
.feld--breit { grid-column: 1 / -1; }
.feld label { font-size: .88rem; font-weight: 600; }
.feld input, .feld select, .feld textarea { font: inherit; font-size: .98rem; padding: 11px 12px; border: 1px solid #CBD5E1; border-radius: 9px; background: #fff; color: var(--text); }
.feld input:focus, .feld select:focus, .feld textarea:focus { outline: 3px solid var(--blau-hell); border-color: var(--blau); }
.feld [aria-invalid] { border-color: #B91C1C; }
.feld__fehler { color: #B91C1C; font-size: .85rem; }
.haekchen { display: flex; gap: 10px; align-items: flex-start; font-size: .9rem; color: var(--text-leise); }
.haekchen input { margin-top: 4px; width: 18px; height: 18px; flex: none; }
.honig { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.hinweis { padding: 14px 18px; border-radius: 10px; margin-bottom: 18px; font-weight: 500; }
.hinweis--ok { background: #DCFCE7; color: #14532D; }
.hinweis--fehler { background: #FEE2E2; color: #7F1D1D; }
.hinweis--entwurf { background: #FEF9C3; color: #713F12; font-size: .92rem; }

/* Fuß */
.fuss { border-top: 1px solid var(--linie); padding: 44px 0 26px; font-size: .92rem; color: var(--text-leise); }
.fuss__inner { display: flex; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.fuss__inner p { margin-top: 12px; max-width: 34em; }
.fuss nav { display: flex; gap: 22px; flex-wrap: wrap; align-items: flex-start; }
.fuss nav a { color: var(--text-leise); text-decoration: none; }
.fuss nav a:hover { color: var(--blau-dunkel); }
.fuss__zeile { margin-top: 26px; padding-top: 18px; border-top: 1px solid var(--linie); font-size: .82rem; }

@media (max-width: 960px) {
    .held__inner, .zweispaltig { grid-template-columns: 1fr; gap: 36px; }
    .schritte { grid-template-columns: 1fr 1fr; }
    .karten, .galerie { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
    .nav, .kopf__aktionen { display: none; }
    .mobilnav { display: block; }
    .held { padding-top: 40px; }
    .abschnitt { padding: 56px 0; }
    .schritte, .karten, .galerie, .preise, .formular { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .knopf, .galerie img { transition: none; }
}