/* Korrevia Landingpage — Design-System.
   Nüchtern, behördentauglich, schnell: Systemschriften, keine externen
   Ressourcen, nur ein winziges lokales Skript für den Hero-Rundgang.
   Grün als Akzent (Grünstift statt Rotstift). */

:root {
  --ink: #16232f;
  --ink-soft: #43586c;
  --paper: #ffffff;
  --bg-soft: #f4f7f9;
  --bg-deep: #0f2233;
  --line: #dde5ec;
  --primary: #0e6f5c;
  --primary-dark: #0a5646;
  --primary-soft: #e7f4f0;
  --accent-ink: #1d3d5c;
  --danger-soft: #fdf0ef;
  --danger: #b3402f;
  --radius: 14px;
  --maxw: 1080px;
  font-size: 17px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: ui-sans-serif, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { line-height: 1.2; letter-spacing: -0.015em; margin: 0 0 0.5em; }
h1 { font-size: clamp(1.9rem, 4.5vw, 3.1rem); }
h2 { font-size: clamp(1.45rem, 3vw, 2.1rem); }
h3 { font-size: 1.12rem; }
p { margin: 0 0 1em; }
a { color: var(--primary-dark); }
img, svg { max-width: 100%; height: auto; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
section { padding: 72px 0; }
section.soft { background: var(--bg-soft); }

.kicker {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--primary-dark);
  margin-bottom: 10px;
}

.lead { font-size: 1.12rem; color: var(--ink-soft); max-width: 46em; }

/* ---- Navigation ---- */
header.site {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; gap: 22px;
  padding: 14px 20px; max-width: var(--maxw); margin: 0 auto;
}
.logo { font-weight: 800; font-size: 1.25rem; letter-spacing: -0.02em; color: var(--ink); text-decoration: none; }
.logo span { color: var(--primary); }
.nav nav { display: flex; gap: 18px; flex-wrap: wrap; margin-left: auto; }
.nav nav a { text-decoration: none; color: var(--ink-soft); font-size: 0.95rem; }
.nav nav a:hover { color: var(--ink); }
.nav nav a[aria-current] { color: var(--ink); font-weight: 650; }
.nav .btn { margin-left: 8px; }
/* Nur am Handy sichtbar (siehe @media max-width 600px): „Anmelden“ bleibt
   direkt erreichbar, der Rest der Navigation steckt hinter dem Menü-Knopf. */
.nav-login, .menu-toggle { display: none; }
.menu-toggle {
  align-items: center; gap: 6px;
  padding: 7px 12px; border: 1.5px solid var(--line); border-radius: 10px;
  background: var(--paper); color: var(--ink);
  font: inherit; font-size: 0.9rem; font-weight: 600; cursor: pointer;
}
.menu-toggle svg { width: 18px; height: 18px; }

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 650;
  text-decoration: none;
  font-size: 1rem;
  border: 1.5px solid transparent;
}
.btn.primary { background: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.ghost { border-color: var(--line); color: var(--ink); background: var(--paper); }
.btn.ghost:hover { border-color: var(--ink-soft); }
.btn.small { padding: 8px 16px; font-size: 0.9rem; }

/* ---- Hero ---- */
.hero { padding: 84px 0 60px; }
.hero .wrap { display: grid; gap: 48px; grid-template-columns: 1.05fr 0.95fr; align-items: center; }
/* Grid-Items dürfen nicht durch Inhalts-Mindestbreite aufblähen (Karussell!). */
.hero .wrap > * { min-width: 0; }
.hero h1 { margin-bottom: 18px; }
.badges { display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0; }
.badge {
  font-size: 0.82rem; font-weight: 600;
  background: var(--primary-soft); color: var(--primary-dark);
  padding: 6px 12px; border-radius: 999px;
}
.badge.neutral { background: var(--bg-soft); color: var(--ink-soft); }
.cta-row { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 8px; }
.cta-note { font-size: 0.88rem; color: var(--ink-soft); margin-top: 12px; }

/* ---- Schematische Produktansicht (Mock) ---- */
.mock {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: 0 18px 40px -24px rgba(22, 35, 47, 0.25);
  overflow: hidden;
  font-size: 0.82rem;
}
.mock .bar {
  display: flex; align-items: center; gap: 6px;
  background: var(--bg-soft); border-bottom: 1px solid var(--line);
  padding: 9px 14px; color: var(--ink-soft); font-size: 0.75rem;
}
.mock .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--line); }
.mock .body { padding: 16px; display: grid; gap: 12px; }
.mock .row { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-start; }
.mock .chip {
  font-size: 0.72rem; font-weight: 700; padding: 3px 9px; border-radius: 999px;
  white-space: nowrap;
}
.chip.green { background: var(--primary-soft); color: var(--primary-dark); }
.chip.blue { background: #e8eef5; color: var(--accent-ink); }
.chip.grey { background: var(--bg-soft); color: var(--ink-soft); }
.mock .quote {
  border-left: 3px solid var(--primary);
  background: var(--bg-soft);
  padding: 8px 12px; border-radius: 0 8px 8px 0;
  color: var(--ink-soft); font-style: italic;
}
.mock .score { font-weight: 800; font-size: 1rem; }
.mock .actions { display: flex; gap: 8px; }
.mock .mbtn {
  font-size: 0.75rem; font-weight: 700; padding: 6px 12px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--paper);
}
.mock .mbtn.go { background: var(--primary); border-color: var(--primary); color: #fff; }
.mock-caption { font-size: 0.8rem; color: var(--ink-soft); margin-top: 10px; text-align: center; }

/* ---- Hero-Rundgang: Scroll-Snap-Karussell (Swipe) + Punkte + Reiter ---- */
.tour .slides {
  display: flex; overflow-x: auto; width: 100%;
  /* KEIN scroll-behavior:smooth hier — zusammen mit mandatory-Snap bricht
     Chromium sonst programmatische Scrolls ab; das Skript nutzt scrollIntoView. */
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.tour .slides::-webkit-scrollbar { display: none; }
.tour .slide { flex: 0 0 100%; scroll-snap-align: center; min-width: 0; }
.tour .dots { display: flex; gap: 9px; justify-content: center; margin-bottom: 12px; }
.tour .dots .dot {
  width: 11px; height: 11px; border-radius: 50%; padding: 0;
  border: none; background: var(--line); cursor: pointer;
}
.tour .dots .dot.active { background: var(--primary); }
.tour .tabs { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 14px; }
.tour .tab {
  font-size: 0.8rem; font-weight: 650; cursor: pointer;
  padding: 6px 13px; border-radius: 999px; font-family: inherit;
  border: 1.5px solid var(--line); color: var(--ink-soft); background: var(--paper);
}
.tour .tab:hover { border-color: var(--ink-soft); color: var(--ink); }
.tour .tab.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* Digitale Schülerhandschrift + Arbeitsblatt-Optik */
.sheet {
  background: #fffdf8; border: 1px solid var(--line); border-radius: 8px;
  padding: 12px 14px; position: relative;
  background-image: repeating-linear-gradient(transparent, transparent 25px, #e8edf2 26px);
}
.hand {
  font-family: "Segoe Print", "Bradley Hand", "Comic Sans MS", cursive;
  color: #2b4a8b; font-size: 0.86rem; line-height: 26px;
  transform: rotate(-0.4deg); margin: 0;
}
.redact {
  display: inline-block; vertical-align: middle;
  width: 96px; height: 17px; background: var(--ink); border-radius: 3px;
  outline: 2px dashed var(--primary); outline-offset: 2px; margin: 0 6px;
}
.zone-frame {
  position: relative; border: 2px dashed #2f7fd4; border-radius: 6px;
  padding: 4px 8px; margin-top: 4px;
}
.zone-frame .ztag {
  position: absolute; top: -10px; left: -6px;
  background: #2f7fd4; color: #fff; font-size: 0.66rem; font-weight: 800;
  padding: 1px 7px; border-radius: 5px;
}
.hl-word { background: #2f7fd4; color: #fff; border-radius: 3px; padding: 0 3px; }
.chip.amber { background: #fdf3d7; color: #8a6d1a; }
.crit {
  border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px;
  font-size: 0.76rem; color: var(--ink-soft); background: var(--paper);
}
.crit .crit-k { font-size: 0.66rem; font-weight: 800; letter-spacing: 0.05em; color: var(--ink-soft); }

/* Schwärzungs-Mock */
.page-thumb {
  background: repeating-linear-gradient(#fff, #fff 12px, #eef2f5 13px, #eef2f5 14px);
  border: 1px solid var(--line); border-radius: 8px;
  padding: 14px; position: relative; min-height: 120px;
}
.redaction {
  position: absolute; top: 12px; left: 14px;
  background: var(--ink); border-radius: 4px;
  width: 42%; height: 20px; opacity: 0.92;
  outline: 2px dashed var(--primary); outline-offset: 3px;
}

/* ---- Karten & Grids ---- */
.grid { display: grid; gap: 18px; }
.grid.c2 { grid-template-columns: repeat(2, 1fr); }
.grid.c3 { grid-template-columns: repeat(3, 1fr); }
.grid.c4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}
.card h3 { margin-bottom: 8px; }
.card p { margin: 0; color: var(--ink-soft); font-size: 0.95rem; }
.card .num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--primary-soft); color: var(--primary-dark);
  font-weight: 800; font-size: 0.9rem; margin-bottom: 12px;
}

/* Kontrast-Sektion */
.card.bad { background: var(--danger-soft); border-color: #f0d9d5; }
.card.bad h3 { color: var(--danger); }
.card.good { background: var(--primary-soft); border-color: #cde8e0; }
.card.good h3 { color: var(--primary-dark); }

/* Workflow */
/* minmax(0, …): sonst drückt die Mindestbreite eines Mocks die Spalte und damit
   die ganze Seite am Handy über den Bildschirmrand (430 statt 390 px). */
.step { display: grid; grid-template-columns: 56px minmax(0, 1fr); gap: 18px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.step:last-child { border-bottom: 0; }
.step .snum {
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1.1rem;
}
.step h3 { margin-bottom: 6px; }
.step p { color: var(--ink-soft); margin: 0; }
.step .claim { font-weight: 700; color: var(--primary-dark); font-size: 0.88rem; margin-top: 8px; display: block; }

/* Datenfluss-Diagramm */
.flow {
  display: grid; grid-template-columns: 1fr auto 1fr; gap: 16px;
  align-items: stretch; margin: 28px 0;
}
.flow .zone {
  border-radius: var(--radius); padding: 20px; font-size: 0.92rem;
}
.flow .zone.local { background: var(--primary-soft); border: 1.5px solid var(--primary); }
.flow .zone.remote { background: var(--bg-soft); border: 1.5px dashed var(--line); }
.flow .zone h4 { margin: 0 0 10px; font-size: 0.95rem; }
.flow .zone ul { margin: 0; padding-left: 18px; color: var(--ink-soft); }
.flow .arrow {
  align-self: center; font-size: 1.4rem; color: var(--primary-dark);
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  font-weight: 700;
}
.flow .arrow small { font-size: 0.68rem; color: var(--ink-soft); max-width: 110px; text-align: center; font-weight: 600; }

/* Preise */
.price-card { display: flex; flex-direction: column; }
.price-card .price { font-size: 2rem; font-weight: 800; margin: 6px 0 2px; }
.price-card .per { color: var(--ink-soft); font-size: 0.85rem; margin-bottom: 14px; }
.price-card ul { margin: 0 0 18px; padding-left: 20px; color: var(--ink-soft); font-size: 0.93rem; }
.price-card li { margin-bottom: 6px; }
.price-card .btn { margin-top: auto; text-align: center; }
.price-card.featured { border: 2px solid var(--primary); position: relative; }
.price-card.featured::before {
  content: "Einführungspreis Pilotphase";
  position: absolute; top: -12px; left: 20px;
  background: var(--primary); color: #fff;
  font-size: 0.72rem; font-weight: 700; padding: 3px 10px; border-radius: 999px;
}

/* Über */
.founder { display: grid; grid-template-columns: 120px 1fr; gap: 26px; align-items: start; }
.founder .avatar {
  width: 120px; height: 120px; border-radius: 50%;
  background: var(--primary-soft); border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  font-size: 2.4rem; color: var(--primary-dark); font-weight: 800;
}

/* FAQ */
details {
  border: 1px solid var(--line); border-radius: 12px;
  padding: 16px 20px; margin-bottom: 12px; background: var(--paper);
}
details summary {
  cursor: pointer; font-weight: 700; list-style: none;
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
details summary::after { content: "+"; font-size: 1.3rem; color: var(--primary-dark); flex-shrink: 0; }
details[open] summary::after { content: "–"; }
details p { margin: 12px 0 0; color: var(--ink-soft); }

/* Final CTA */
.final { background: var(--bg-deep); color: #eef4f8; text-align: center; }
.final h2 { color: #fff; }
.final .lead { color: #b8c9d6; margin-left: auto; margin-right: auto; }
.final .btn.ghost { background: transparent; color: #eef4f8; border-color: #3c5872; }

/* Footer */
footer.site {
  border-top: 1px solid var(--line); padding: 40px 0 44px; font-size: 0.88rem; color: var(--ink-soft);
  background: var(--paper);
}
footer.site a { color: var(--ink-soft); }
footer.site .fuss {
  display: grid; gap: 28px;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
}
footer.site .fuss-marke p { margin: 10px 0 0; max-width: 28em; }
footer.site .fuss nav { display: flex; flex-direction: column; gap: 7px; }
footer.site .fuss-titel {
  margin: 0 0 4px; font-weight: 700; color: var(--ink);
  font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em;
}
footer.site a[aria-current] { color: var(--ink); font-weight: 650; }

/* Sprunglink für Tastatur und Screenreader */
.skip {
  position: absolute; left: -9999px; top: 8px; z-index: 100;
  background: var(--paper); color: var(--ink); padding: 8px 14px;
  border: 2px solid var(--primary); border-radius: 8px; font-weight: 650;
}
.skip:focus { left: 12px; }

/* Brotkrumen */
.brotkrumen { background: var(--bg-soft); border-bottom: 1px solid var(--line); font-size: 0.85rem; }
.brotkrumen ol {
  list-style: none; display: flex; flex-wrap: wrap; gap: 4px 0;
  margin: 0 auto; padding-top: 10px; padding-bottom: 10px;
}
.brotkrumen li { color: var(--ink-soft); }
.brotkrumen li + li::before { content: "›"; margin: 0 8px; color: var(--ink-soft); }
.brotkrumen a { color: var(--ink-soft); text-decoration: none; }
.brotkrumen a:hover { color: var(--ink); text-decoration: underline; }

/* Unterseiten (Sicherheit, Impressum, Datenschutz) */
.prose { max-width: 46em; }
.prose h2 { margin-top: 2em; }
.prose table { border-collapse: collapse; width: 100%; font-size: 0.92rem; }
.prose th, .prose td { border: 1px solid var(--line); padding: 8px 12px; text-align: left; vertical-align: top; }
.prose th { background: var(--bg-soft); }
.todo {
  background: #fff8e6; border: 1px solid #eadfae; border-radius: 8px;
  padding: 10px 14px; font-size: 0.9rem; color: #6b5b1e;
}

/* Ratgeber und Fachseiten: Lesetext */
.artikel { padding: 56px 0 72px; }
.artikel .prose { margin: 0 auto; }
.prose h3 { margin-top: 1.6em; }
.prose ul, .prose ol { padding-left: 1.3em; margin: 0 0 1.1em; }
.prose li { margin-bottom: 0.4em; }
.prose blockquote {
  margin: 1.2em 0; padding: 10px 16px; border-left: 3px solid var(--primary);
  background: var(--bg-soft); border-radius: 0 8px 8px 0; color: var(--ink-soft);
}
.prose figure { margin: 1.4em 0; }
.prose figcaption { font-size: 0.85rem; color: var(--ink-soft); margin-top: 6px; }
.prose .tabelle { overflow-x: auto; margin: 1.2em 0; }
.prose code { background: var(--bg-soft); padding: 1px 5px; border-radius: 4px; font-size: 0.92em; }
.artikel-meta { font-size: 0.88rem; color: var(--ink-soft); margin: -4px 0 18px; }
.kurz {
  background: var(--primary-soft); border: 1px solid #cde8e0; border-radius: var(--radius);
  padding: 18px 22px; margin: 1.4em 0;
}
.kurz p:last-child, .kurz ul:last-child { margin-bottom: 0; }
.kurz .kurz-titel { font-weight: 800; color: var(--primary-dark); margin-bottom: 6px; }
.hinweis {
  background: #fff8e6; border: 1px solid #eadfae; border-radius: var(--radius);
  padding: 14px 18px; margin: 1.4em 0; font-size: 0.95rem;
}
.hinweis p:last-child { margin-bottom: 0; }
.inhalt {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 22px;
  margin: 1.6em 0; background: var(--paper);
}
.inhalt p { font-weight: 700; margin: 0 0 6px; }
.inhalt ol { margin: 0; }
.checkliste { list-style: none; padding-left: 0 !important; }
.checkliste li { position: relative; padding-left: 30px; }
.checkliste li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--primary-soft); color: var(--primary-dark);
  font-size: 0.75rem; font-weight: 800; line-height: 20px; text-align: center;
}
.quellen { font-size: 0.88rem; color: var(--ink-soft); }
.quellen li { margin-bottom: 0.5em; }
.cta-box {
  background: var(--bg-deep); color: #eef4f8; border-radius: var(--radius);
  padding: 26px 28px; margin: 2.2em 0 0;
}
.cta-box h2, .cta-box .cta-titel { color: #fff; margin-top: 0; font-size: 1.3rem; font-weight: 800; }
.cta-box p { color: #b8c9d6; }
.cta-box .btn.ghost { background: transparent; color: #eef4f8; border-color: #3c5872; }
.weiter { margin-top: 2.4em; }
.weiter ul { list-style: none; padding-left: 0; display: grid; gap: 10px; }
.weiter li a {
  display: block; padding: 12px 16px; border: 1px solid var(--line); border-radius: 12px;
  text-decoration: none; color: var(--ink); background: var(--paper);
}
.weiter li a:hover { border-color: var(--primary); }
.weiter li a span { display: block; color: var(--ink-soft); font-size: 0.88rem; margin-top: 2px; }

/* Karten mit Link (Fächer, Ratgeber-Übersicht) */
a.card { display: block; text-decoration: none; color: inherit; transition: border-color 0.15s; }
a.card:hover { border-color: var(--primary); }
a.card .mehr { display: inline-block; margin-top: 10px; font-weight: 700; color: var(--primary-dark); font-size: 0.92rem; }

/* ---- Responsive ---- */
/* Kopfzeile bei schmalem Fenster: Logo · Anmelden · Menü. Vorher war die
   Navigation am Handy ersatzlos ausgeblendet — samt „Anmelden“ (Nutzer-Befund
   10.10.). Seit sechs Navigationspunkten greift der Menü-Knopf schon unter
   1000 px, sonst bricht die Zeile auf Tablets um. */
@media (max-width: 1000px) {
  .nav { flex-wrap: wrap; gap: 12px; }
  .nav nav, .nav .btn { display: none; }
  .nav-login { display: inline-block; margin-left: auto; font-weight: 600; text-decoration: none; }
  .menu-toggle { display: inline-flex; }
  .nav.open nav {
    display: flex; flex-direction: column; gap: 0;
    order: 10; flex-basis: 100%; margin-left: 0;
  }
  .nav.open nav a { padding: 10px 0; border-top: 1px solid var(--line); }
  .nav.open nav a.login { display: none; }
  .nav.open .btn { display: block; order: 11; flex-basis: 100%; margin: 4px 0 6px; text-align: center; }
}
@media (max-width: 900px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 32px; }
  .grid.c3, .grid.c4 { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: 1fr; }
  .flow .arrow { transform: rotate(90deg); padding: 4px 0; }
  .flow .arrow small { transform: rotate(-90deg); display: none; }
  footer.site .fuss { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  footer.site .fuss-marke { grid-column: 1 / -1; }
}
@media (max-width: 600px) {
  section { padding: 52px 0; }
  .artikel { padding: 36px 0 52px; }
  .grid.c2, .grid.c3, .grid.c4 { grid-template-columns: 1fr; }
  /* Breite Tabellen (Sicherheits-Seite) seitlich wischen statt die Seite zu verbreitern. */
  .prose table { display: block; overflow-x: auto; }
  .founder { grid-template-columns: 1fr; }
  .founder .avatar { width: 84px; height: 84px; font-size: 1.7rem; }
  footer.site .fuss { grid-template-columns: 1fr; }
}