/* Schrift: Archivo (SIL Open Font License), lokal eingebunden – keine fremden Server */
@font-face {
  font-family: "Archivo";
  src: url("fonts/archivo-latin-wdth-normal.woff2") format("woff2");
  font-weight: 100 900;
  font-stretch: 62% 125%;
  font-style: normal;
  font-display: swap;
}

:root {
  --papier: #FBFBF8;
  --flaeche: #EDF1EE;
  --tinte: #13302A;
  --tinte-leise: #4A635C;
  --linie: #C7D3CE;
  --signal: #FFD23F;
  --auf-signal: #13302A;
  --radius-klein: 8px;
  --radius: 14px;
  --zeilenmass: 66ch;
  --abstand-abschnitt: clamp(4.5rem, 9vw, 8rem);
  --rand: clamp(1rem, 4vw, 2.5rem);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --papier: #0E1D1A;
    --flaeche: #152A26;
    --tinte: #E6EEEB;
    --tinte-leise: #A3B8B1;
    --linie: #2D4640;
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--papier);
  color: var(--tinte);
  font-family: "Archivo", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
  font-weight: 400;
  font-stretch: 100%;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { margin: 0; color: var(--tinte); }
p { margin: 0; }

a { color: inherit; }

:focus-visible {
  outline: 3px solid var(--tinte);
  outline-offset: 3px;
  border-radius: 4px;
}

.rahmen {
  max-width: 72rem;
  margin-inline: auto;
  padding-inline: var(--rand);
}

/* Sprungmarke für Tastatur */
.sprungmarke {
  position: absolute;
  left: -999rem;
  top: 0.75rem;
  z-index: 10;
  background: var(--signal);
  color: var(--auf-signal);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-klein);
  font-weight: 650;
}
.sprungmarke:focus { left: 1rem; }

/* Kopf */
.kopf {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.25rem;
}

.marke {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  font-weight: 800;
  font-stretch: 125%;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.marke-zeichen { width: 1.6rem; height: 1.6rem; flex: none; }
.zeichen-ki { fill: none; stroke: var(--tinte); stroke-width: 4.5; stroke-dasharray: 7 5; }
.zeichen-mensch { fill: var(--signal); }

.nav { display: flex; gap: 1.4rem; }
.nav a {
  text-decoration: none;
  font-weight: 560;
  text-underline-offset: 0.3em;
}
.nav a:hover {
  text-decoration: underline;
  text-decoration-color: var(--signal);
  text-decoration-thickness: 3px;
}

@media (max-width: 560px) {
  .nav a:not(.nav-kontakt) { display: none; }
}

/* Hero */
.hero {
  display: grid;
  gap: clamp(2.5rem, 5vw, 4rem);
  padding-top: clamp(2.5rem, 7vw, 6rem);
}

@media (min-width: 960px) {
  .hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }
}

.titel-gross {
  font-size: clamp(2.5rem, 1.1rem + 5.4vw, 5.4rem);
  line-height: 0.97;
  font-weight: 800;
  font-stretch: 125%;
  letter-spacing: -0.02em;
  text-wrap: balance;
  margin-bottom: 1.6rem;
}

.hero-intro {
  font-size: clamp(1.08rem, 1rem + 0.35vw, 1.25rem);
  max-width: 54ch;
  margin-bottom: 2rem;
}

.hero-aktionen { display: flex; flex-wrap: wrap; gap: 0.75rem; }

/* Knöpfe */
.knopf {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.65rem 1.25rem;
  border: 2px solid var(--tinte);
  border-radius: 999px;
  background: transparent;
  color: var(--tinte);
  font: inherit;
  font-weight: 650;
  font-stretch: 108%;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
}
.knopf:hover { background: var(--tinte); color: var(--papier); }

.knopf-voll { background: var(--tinte); color: var(--papier); }
.knopf-voll:hover { background: transparent; color: var(--tinte); }

.knopf-signal {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--auf-signal);
}
.knopf-signal:hover { background: var(--tinte); border-color: var(--tinte); color: var(--papier); }

.knopf[hidden] { display: none; }

/* Freigabe-Demo */
.demo {
  background: var(--flaeche);
  border: 1px solid var(--linie);
  border-radius: var(--radius);
  padding: clamp(1.1rem, 2.5vw, 1.6rem);
}

.demo-kopf {
  font-size: 0.9rem;
  color: var(--tinte-leise);
  margin-bottom: 0.9rem;
}

.mail {
  background: var(--papier);
  border: 1px solid var(--linie);
  border-radius: var(--radius-klein);
  padding: 0.85rem 1rem;
}

.mail-von { font-weight: 650; font-size: 0.95rem; }
.mail-text { margin-block: 0.3rem; }

.hinweis { font-size: 0.85rem; color: var(--tinte-leise); }

.entwurf {
  margin-top: 1rem;
  border: 2px dashed var(--tinte-leise);
  border-radius: var(--radius-klein);
  padding: 0.85rem 1rem;
  transition: border-color 0.3s ease, opacity 0.3s ease;
}

.entwurf-kopf { font-weight: 650; font-size: 0.95rem; margin-bottom: 0.3rem; }

.entwurf-text { display: grid; margin-bottom: 0.3rem; }
.entwurf-text > span { grid-area: 1 / 1; }
.geist { visibility: hidden; }

.mark {
  background-image: linear-gradient(var(--signal), var(--signal));
  background-repeat: no-repeat;
  background-size: 0% 100%;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
  transition: background-size 0.7s ease;
}

.entwurf.ist-freigegeben { border-style: solid; border-color: var(--tinte); }
.entwurf.ist-freigegeben .mark { background-size: 100% 100%; color: var(--auf-signal); }

.entwurf.ist-verworfen { opacity: 0.5; }
.entwurf.ist-verworfen .mark { text-decoration: line-through; }

.demo-frage { margin-top: 1.1rem; font-weight: 650; }

.entscheidung { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 0.5rem; }

.status-zeile { min-height: 1.65em; margin-top: 0.75rem; font-weight: 600; }

/* Haltung */
.haltung { padding-top: var(--abstand-abschnitt); }
.haltung p {
  font-size: clamp(1.45rem, 1.05rem + 1.7vw, 2.35rem);
  line-height: 1.25;
  font-weight: 520;
  font-stretch: 108%;
  letter-spacing: -0.01em;
  max-width: 34ch;
  text-wrap: pretty;
}

/* Abschnitte */
.abschnitt { padding-top: var(--abstand-abschnitt); }

.abschnitt h2 {
  font-size: clamp(1.9rem, 1.2rem + 2.4vw, 3rem);
  line-height: 1.02;
  font-weight: 780;
  font-stretch: 118%;
  letter-spacing: -0.015em;
  text-wrap: balance;
  margin-bottom: 1.25rem;
}

.abschnitt h3 {
  font-size: clamp(1.3rem, 1.1rem + 0.8vw, 1.7rem);
  line-height: 1.15;
  font-weight: 720;
  font-stretch: 112%;
  margin-bottom: 0.6rem;
}

/* Legende */
.legende {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.75rem;
  color: var(--tinte-leise);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.muster {
  display: inline-block;
  width: 1.7em;
  height: 1.05em;
  margin-right: 0.55em;
  vertical-align: -0.2em;
  border-radius: 4px;
}
.muster-ki { border: 2px dashed var(--tinte-leise); }
.muster-mensch { background: var(--signal); }

/* Projekte */
.projekt {
  display: grid;
  gap: 2rem;
  padding-block: clamp(2.5rem, 5vw, 4rem);
  border-top: 1px solid var(--linie);
}

@media (min-width: 860px) {
  .projekt {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: clamp(2.5rem, 5vw, 5rem);
  }
}

.projekt-text p { max-width: var(--zeilenmass); }
.projekt-text p + p { margin-top: 0.9rem; }

.projekt-status {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 620;
  border: 1.5px solid var(--tinte);
  border-radius: 999px;
  padding: 0.12rem 0.7rem;
  margin-bottom: 1.1rem;
}
.projekt-text .projekt-status + p { margin-top: 0; }

.gebaut-mit { color: var(--tinte-leise); font-size: 0.95rem; }

/* Ablauf-Diagramm */
.ablauf {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.6rem;
  align-content: start;
}

.schritt {
  position: relative;
  border-radius: 12px;
  padding: 0.75rem 1rem 0.8rem;
}

.schritt strong {
  display: block;
  font-weight: 700;
  font-stretch: 110%;
  line-height: 1.3;
}

.schritt span {
  display: block;
  font-size: 0.95rem;
  line-height: 1.45;
  color: var(--tinte-leise);
}

/* Verbindungslinie mit Pfeilspitze zwischen den Schritten */
.schritt + .schritt::before {
  content: "";
  position: absolute;
  left: 1.5rem;
  top: calc(-1.6rem - 2px);
  height: calc(1.6rem - 6px);
  border-left: 2px solid var(--tinte-leise);
}
.schritt + .schritt::after {
  content: "";
  position: absolute;
  left: calc(1.5rem - 5px);
  top: -9px;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 7px solid var(--tinte-leise);
}

.schritt-quelle { background: var(--flaeche); border: 1.5px solid var(--linie); }
.schritt-ki { border: 2px dashed var(--tinte-leise); }
.schritt-mensch { background: var(--signal); border: 2px solid var(--signal); color: var(--auf-signal); }
.schritt-mensch strong, .schritt-mensch span { color: var(--auf-signal); }

/* Prüfliste */
.pruefliste {
  align-self: start;
  background: var(--flaeche);
  border: 1px solid var(--linie);
  border-radius: var(--radius);
  padding: 1.25rem 1.4rem 1.35rem;
}
.pruefliste h4 { font-size: 1.05rem; font-weight: 720; font-stretch: 110%; margin-bottom: 0.6rem; }
.pruefliste ul { margin: 0; padding-left: 1.15rem; }
.pruefliste li + li { margin-top: 0.4rem; }

/* In Arbeit */
.in-arbeit { list-style: none; margin: 0; padding: 0; }
.in-arbeit li {
  display: grid;
  gap: 0.35rem;
  padding-block: 1.25rem;
  border-top: 1px solid var(--linie);
}
.in-arbeit li > p:last-child { max-width: var(--zeilenmass); }

@media (min-width: 680px) {
  .in-arbeit li { grid-template-columns: 9rem minmax(0, 1fr); gap: 1.5rem; }
}

.phase { font-weight: 650; color: var(--tinte-leise); }

/* Vorgehen */
.vorgehen {
  list-style: none;
  counter-reset: schritt;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 2rem 2.5rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
}
.vorgehen li { counter-increment: schritt; }
.vorgehen li::before {
  content: counter(schritt);
  display: block;
  font-size: 3.2rem;
  line-height: 1;
  font-weight: 800;
  font-stretch: 125%;
  margin-bottom: 0.75rem;
}
.vorgehen li:last-child::before {
  background: var(--signal);
  color: var(--auf-signal);
  width: fit-content;
  padding: 0.1rem 0.6rem 0.15rem;
  border-radius: var(--radius-klein);
}
.vorgehen p { color: var(--tinte); }

/* Mitbringen */
.zwei-spalten { display: grid; gap: 2.5rem; margin-top: 1.5rem; }
@media (min-width: 760px) {
  .zwei-spalten { grid-template-columns: 1fr 1fr; gap: 3.5rem; }
}

.liste { margin: 0; padding-left: 1.15rem; }
.liste li + li { margin-top: 0.55rem; }

.sprachen { margin-top: 2.25rem; color: var(--tinte-leise); }

/* Kontakt */
.kontakt { padding-bottom: var(--abstand-abschnitt); }
.kontakt p + p { margin-top: 0.75rem; }

.kontakt-mail {
  display: inline-block;
  font-size: clamp(1.3rem, 0.75rem + 3.2vw, 3.2rem);
  line-height: 1.15;
  font-weight: 800;
  font-stretch: 100%;
  letter-spacing: -0.015em;
  text-decoration-line: underline;
  text-decoration-color: var(--signal);
  text-decoration-thickness: 0.14em;
  text-underline-offset: 0.18em;
  overflow-wrap: anywhere;
}
.kontakt-mail:hover { text-decoration-color: var(--tinte); }

@media (min-width: 640px) {
  .kontakt-mail { font-stretch: 118%; }
}

.kontakt-ort { color: var(--tinte-leise); }

/* Fuß */
.fuss {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem 2rem;
  padding-block: 2rem 3rem;
  border-top: 1px solid var(--linie);
  font-size: 0.9rem;
  color: var(--tinte-leise);
}
.fuss-links { display: flex; gap: 1.25rem; }
.fuss-links a { color: var(--tinte); }

/* Unterseiten (Impressum, Datenschutz) */
.rechtstext { padding-block: clamp(2rem, 6vw, 4.5rem) var(--abstand-abschnitt); max-width: 48rem; }
.rechtstext h1 {
  font-size: clamp(2.1rem, 1.3rem + 3vw, 3.4rem);
  line-height: 1;
  font-weight: 800;
  font-stretch: 122%;
  letter-spacing: -0.015em;
  margin-bottom: 2rem;
}
.rechtstext h2 {
  font-size: 1.3rem;
  font-weight: 720;
  font-stretch: 112%;
  margin: 2.25rem 0 0.6rem;
}
.rechtstext p + p { margin-top: 0.8rem; }
.rechtstext address { font-style: normal; }
.zurueck { display: inline-block; margin-bottom: 2rem; font-weight: 600; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}