/* ============================================================
   innovation-review.com — Stylesheet
   ------------------------------------------------------------
   Visuelle Identität: dunkler Grund, präzise Linien, eine
   einzige Signalfarbe (Disruptions-Orange) für Links, CTA und
   die disruptive Kurve. Sans für UI und Fließtext, Serif nur
   für das Christensen-Zitat und Zwischen-Statements.
   Keine externen Ressourcen — Fonts liegen lokal.
   ============================================================ */

@font-face {
  font-family: 'Inter';
  src: url('../fonts/inter-var-latin.woff2') format('woff2');
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: 'Source Serif 4';
  src: url('../fonts/source-serif-4-latin.woff2') format('woff2');
  font-weight: 400;
  font-display: swap;
}

:root {
  --bg:        #0B0F13;
  --surface:   #12181F;
  --ink:       #E8E6E1;
  --ink-dim:   #8B949E;
  --accent:    #F5762E;
  --line:      #2E3947;
  --line-soft: rgba(46, 57, 71, 0.5);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-serif: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --container-max: 76rem;
  --gutter: 1.5rem;
  --maxw-text: 68ch;
}
@media (min-width: 900px) {
  :root { --gutter: 2.5rem; }
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------- Grundtypografie ---------- */
h1, h2, h3 { font-weight: 500; letter-spacing: -0.015em; line-height: 1.2; }
h1 { font-size: clamp(1.9rem, 5vw, 3.1rem); }
h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); }
h3 { font-size: 1.1rem; }
p, li { max-width: var(--maxw-text); }
b, strong { font-weight: 600; }

a { color: var(--accent); text-decoration: none; border-bottom: 1px solid rgba(245, 118, 46, 0.35); transition: border-color 0.15s ease; }
a:hover { border-bottom-color: var(--accent); }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}
::selection { background: rgba(245, 118, 46, 0.3); }

.label {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.label.accent { color: var(--accent); }

.small { font-size: 0.85rem; color: var(--ink-dim); }
.dim { color: var(--ink-dim); }

/* Serif-Statements: nur Zitat und Zwischen-Statements */
.zitat {
  font-family: var(--font-serif);
  font-size: clamp(1.35rem, 3.2vw, 2rem);
  line-height: 1.45;
  font-style: italic;
  max-width: 30em;
}
.zitat-quelle {
  font-family: var(--font-sans);
  font-style: normal;
  font-size: 0.85rem;
  color: var(--ink-dim);
  margin-top: 1.2rem;
  display: block;
}
.statement {
  font-family: var(--font-serif);
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  line-height: 1.5;
  max-width: 34em;
}

/* ---------- Layout ---------- */
/* Ein Raster für alles: Header-Inhalt, Hero-Inhalt und Sektionen liegen
   im selben Container — Wortmarke und H1 teilen dieselbe linke Kante. */
.wrap {
  width: min(100% - 2 * var(--gutter), var(--container-max));
  margin-inline: auto;
}
.wrap-text { max-width: var(--maxw-text); }
main section { padding: clamp(3.5rem, 9vw, 6.5rem) 0; }
main section + section { border-top: 1px solid var(--line-soft); }

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--surface); color: var(--ink);
  padding: 0.6rem 1rem; z-index: 100; border: 0;
}
.skip-link:focus { left: 0; }

/* ---------- Header ---------- */
.site-header {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 10;
  padding: 1.1rem 0;
}
.site-header .wrap { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; }
.wordmark {
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
  border: 0;
}
.wordmark .tld { color: var(--ink-dim); font-weight: 400; }
.site-nav { display: flex; align-items: center; gap: 2.25rem; font-size: 0.88rem; }
.site-nav a { color: var(--ink-dim); border: 0; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--ink); }
.site-nav ul {
  display: flex;
  align-items: center;
  gap: 2.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.lang { display: inline-flex; align-items: center; gap: 0.6rem; }
.lang .is-active { color: var(--ink); font-weight: 500; }
.lang .lang-trenner { color: var(--ink-dim); }
.lang a { color: var(--ink-dim); border: 0; }
.lang a:hover { color: var(--accent); }

/* Unterseiten: Header im Fluss, mit Linie */
.site-header.static {
  position: static;
  border-bottom: 1px solid var(--line-soft);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;              /* svh statt vh — sonst springt es auf iOS */
  display: grid;
  grid-template-rows: auto 1fr auto;
  overflow: hidden;
}
.hero__media {
  position: absolute; inset: 0;
  z-index: 0;
  background: var(--bg);
}
.hero__media video, .hero__media canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
}
.hero__scrim {
  position: absolute; inset: 0;
  background:
    linear-gradient(to right, rgba(11, 15, 19, 0.75), transparent 55%),
    linear-gradient(to bottom,
      rgba(11, 15, 19, 0.25) 0%,
      rgba(11, 15, 19, 0.45) 55%,
      var(--bg) 100%);
}
.hero__content {
  grid-row: 2;
  align-self: start;
  position: relative; z-index: 1;
  padding-top: clamp(4rem, 30vh, 20rem);   /* H1-Oberkante bei ~30 vh */
  padding-bottom: 2rem;
  max-width: 52rem;
  margin-inline: 0;
  margin-left: calc((100% - min(100% - 2 * var(--gutter), var(--container-max))) / 2);
}
.hero h1 { max-width: 15em; }

/* Scroll-Hinweis: 1px-Linie, oberer Abschnitt wandert in Schleife nach unten */
.hero__scroll {
  grid-row: 3;
  justify-self: center;
  position: relative; z-index: 1;
  padding-bottom: 1.6rem;
}
.hero__scroll-linie {
  display: block;
  width: 1px; height: 48px;
  background: var(--line);
  position: relative;
  overflow: hidden;
}
.hero__scroll-linie::after {
  content: '';
  position: absolute; left: 0; top: 0;
  width: 1px; height: 16px;
  background: var(--ink-dim);
  animation: scroll-hinweis 2.4s ease-in-out infinite;
}
@keyframes scroll-hinweis {
  from { transform: translateY(-16px); }
  to   { transform: translateY(48px); }
}
.hero .subline {
  margin-top: 1.4rem;
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--ink-dim);
  max-width: 34em;
}
.hero-actions { margin-top: 2.6rem; display: flex; flex-wrap: wrap; gap: 1rem; }

/* Button-Hierarchie: primär flächig gefüllt, sekundär Kontur */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-size: 0.92rem;
  font-weight: 500;
  border: 1px solid var(--ink-dim);
  border-radius: 2px;
  color: var(--ink);
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.btn:hover { border-color: var(--ink); }
.btn-primary {
  background: var(--accent);
  border: 1px solid transparent;
  color: #0B0F13;
}
.btn-primary:hover { background: #f6853f; border-color: transparent; }  /* ~8 % aufgehellt */
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.btn .arrow { margin-left: 0.4rem; }

/* ---------- Dilemma-Grafik ---------- */
.dilemma-figur {
  margin: 3rem 0 1rem;
  max-width: 46rem;
}
.dilemma-figur svg { width: 100%; height: auto; display: block; }
.dilemma-figur .achse { stroke: var(--line); stroke-width: 1; }
.dilemma-figur .achsen-text { fill: var(--ink-dim); font-family: var(--font-sans); font-size: 13px; }
.dilemma-figur .kurve-etabliert { stroke: var(--ink-dim); stroke-width: 2; fill: none; }
.dilemma-figur .kurve-disruptiv { stroke: var(--accent); stroke-width: 2.25; fill: none; }
.dilemma-figur .band { fill: rgba(46, 57, 71, 0.35); }
.dilemma-figur .band-linie { stroke: var(--line); stroke-width: 1; stroke-dasharray: 5 5; fill: none; }
/* Beschriftungen sind ohne JavaScript sichtbar; dilemma.js blendet sie
   nur für die Sequenz-Animation vorübergehend aus. */
.dilemma-figur .beschriftung { fill: var(--ink); font-family: var(--font-sans); font-size: 13.5px; }
.dilemma-figur .beschriftung.dim { fill: var(--ink-dim); }
.dilemma-figur .beschriftung.orange { fill: var(--accent); }

/* ---------- Prinzipien / Der Ausweg ---------- */
.prinzip { margin-top: 2.6rem; }
.prinzip h3 { margin-bottom: 0.5rem; }
.prinzip h3 .nr { color: var(--accent); font-variant-numeric: tabular-nums; margin-right: 0.6rem; font-weight: 500; }
.prinzip p a { white-space: nowrap; }

/* ---------- Angebot ---------- */
.formate { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1.5rem, 4vw, 3.5rem); margin-top: 2.8rem; }
@media (max-width: 720px) { .formate { grid-template-columns: 1fr; } }
.format { border-top: 2px solid var(--accent); padding-top: 1.4rem; }
.format h3 { margin-bottom: 0.2rem; }
.format .untertitel { color: var(--ink-dim); font-size: 0.9rem; margin-bottom: 1rem; }

/* ---------- Methodenliste ---------- */
.methoden-liste { list-style: none; margin-top: 2.5rem; counter-reset: methode; }
.methoden-liste li {
  counter-increment: methode;
  border-top: 1px solid var(--line-soft);
  padding: 1.1rem 0;
  display: grid;
  grid-template-columns: 2.6rem 1fr;
  gap: 0.4rem 1.2rem;
  max-width: none;
}
.methoden-liste li::before {
  content: counter(methode, decimal-leading-zero);
  color: var(--ink-dim);
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
  padding-top: 0.15rem;
  grid-row: span 2;
}
.methoden-liste li:last-child { border-bottom: 1px solid var(--line-soft); }
.methoden-liste a { font-weight: 500; color: var(--ink); border: 0; }
.methoden-liste a:hover { color: var(--accent); }
.methoden-liste .beschreibung { color: var(--ink-dim); font-size: 0.92rem; max-width: var(--maxw-text); }

/* ---------- Methoden-Einzelseite ---------- */
.breadcrumb { font-size: 0.85rem; color: var(--ink-dim); }
.breadcrumb a { color: var(--ink-dim); border-bottom-color: var(--line); }
.breadcrumb a:hover { color: var(--accent); }
.methode-artikel { padding: clamp(3rem, 7vw, 5rem) 0; }
/* Innerhalb des Artikels gilt das große Sektions-Padding der Startseite nicht */
main .methode-artikel section { padding: 1.2rem 0 0.4rem; }
main .methode-artikel section + section { border-top: 0; }
.methode-artikel .antwort {
  font-size: 1.12rem;
  line-height: 1.65;
  margin-top: 1.6rem;
}
.methode-artikel h1 { margin-top: 0.9rem; }
.methode-artikel h2 { margin-top: 3rem; margin-bottom: 1rem; font-size: 1.25rem; }
.methode-artikel p + p { margin-top: 1rem; }
.methode-artikel section > p:first-of-type { margin-top: 0; }
.schritte { margin: 1.2rem 0 0 0; padding-left: 0; list-style: none; counter-reset: schritt; }
.schritte li {
  counter-increment: schritt;
  position: relative;
  padding: 0 0 1.3rem 2.8rem;
}
.schritte li::before {
  content: counter(schritt);
  position: absolute; left: 0; top: 0.1rem;
  width: 1.7rem; height: 1.7rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem;
  color: var(--accent);
}
.schritte b { display: block; margin-bottom: 0.2rem; }
.dilemma-bezug {
  border-left: 2px solid var(--accent);
  padding-left: 1.4rem;
  margin-top: 1.2rem;
}
.quelle { font-size: 0.88rem; color: var(--ink-dim); }
.methode-nav {
  display: flex; justify-content: space-between; gap: 1rem;
  border-top: 1px solid var(--line-soft);
  margin-top: 3.5rem; padding-top: 1.5rem;
  font-size: 0.9rem;
}
.methode-nav a { border: 0; }
.methode-nav .zurueck { text-align: center; color: var(--ink-dim); }

/* ---------- Kontakt ---------- */
.kontakt-mail {
  font-size: clamp(1.2rem, 3vw, 1.7rem);
  font-weight: 500;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line-soft);
  padding: 2.5rem 0 3rem;
  font-size: 0.85rem;
  color: var(--ink-dim);
}
.site-footer a { color: var(--ink-dim); border-bottom-color: var(--line); }
.site-footer a:hover { color: var(--ink); border-bottom-color: var(--ink-dim); }
.familie { max-width: none; }
.footer-zeile {
  margin-top: 1.2rem;
  display: flex; flex-wrap: wrap; gap: 0.5rem 1.6rem;
  max-width: none;
}

/* ---------- Dokumentseiten (Impressum, 404, Stats) ---------- */
.doc { padding: clamp(3rem, 8vw, 5.5rem) 0; }
.doc h2 { font-size: 1.15rem; margin: 2.2rem 0 0.6rem; }
.doc p + p { margin-top: 1rem; }

/* ---------- Stats ---------- */
.stat-reihe { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-top: 2rem; max-width: 34rem; }
.stat-block { border-top: 2px solid var(--line); padding-top: 1rem; }
.stat-block .zahl { font-size: 2.2rem; font-weight: 600; font-variant-numeric: tabular-nums; line-height: 1.1; }
.balkenliste { list-style: none; margin-top: 1.2rem; max-width: 34rem; }
.balkenliste li { display: grid; grid-template-columns: 6.5rem 1fr 3rem; gap: 0.8rem; align-items: center; font-size: 0.85rem; padding: 0.2rem 0; max-width: none; }
.balkenliste .balken { height: 0.5rem; background: var(--line); position: relative; }
.balkenliste .balken span { position: absolute; left: 0; top: 0; bottom: 0; background: var(--accent); }
.balkenliste .wert { text-align: right; font-variant-numeric: tabular-nums; color: var(--ink-dim); }

/* ---------- Scroll-Einblendung ---------- */
.einblenden {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.einblenden.sichtbar { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .einblenden { opacity: 1; transform: none; }
}

/* ---------- Responsiv ---------- */
@media (max-width: 640px) {
  .site-nav { gap: 1rem; }
  .site-nav .nav-seiten { display: none; }
  .methoden-liste li { grid-template-columns: 2.2rem 1fr; }
  .methode-nav { flex-direction: column; }
  .methode-nav .zurueck { text-align: left; }
  .stat-reihe { grid-template-columns: 1fr; }
}