/* ============================================================================
   English Reboot — Design
   Farbwelt: gedeckte Naturtöne statt Tech-Blau. Die Kategorie-Farben kommen
   aus dem Warehouse und tragen Bedeutung (Phrasal Verbs = Teal, Chunks = Amber,
   Muster = Violett, Reaktionen = Rot, Collocations = Blau).
   ============================================================================ */

:root {
  /* Grundflächen */
  --bg:          #0f1a17;
  --bg-hell:     #f7f5f1;
  --bg-karte:    #ffffff;
  --bg-dunkel:   #14231f;
  --linie:       #e2ded7;
  --linie-dunkel: #2a3d37;

  /* Text */
  --text:        #1a2320;
  --text-leise:  #5c6b65;
  --text-hell:   #f2efe9;
  --text-hell-leise: #a8b5ae;

  /* Kategorie-Farben (identisch zu phrasal.kategorie.farbe) */
  --kat-pv:      #2E7D6F;
  --kat-chunk:   #D97706;
  --kat-colloc:  #0369A1;
  --kat-muster:  #7C3AED;
  --kat-reaktion:#BE123C;

  --akzent:      #2E7D6F;
  --akzent-hell: #3d9d8c;

  /* Typografie */
  --serif: Georgia, 'Iowan Old Style', 'Times New Roman', serif;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --mono: 'SF Mono', Menlo, Consolas, monospace;

  /* Maße */
  --breit: 1140px;
  --radius: 4px;                 /* bewusst klein — keine Blasen-Optik */
  --schatten: 0 1px 2px rgba(0,0,0,.06), 0 4px 16px rgba(0,0,0,.04);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg-hell);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: var(--serif); font-weight: 400; line-height: 1.15; }

h1 { font-size: clamp(2.1rem, 5vw, 3.6rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.4rem); letter-spacing: -.01em; }
h3 { font-size: 1.15rem; }

a { color: inherit; }

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

/* ------------------------------------------------------------------ Nav -- */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 2rem;
  max-width: var(--breit); margin: 0 auto; padding: 1.1rem 1.5rem;
  background: rgba(247,245,241,.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
}
.nav-scrolled { border-bottom-color: var(--linie); }

.brand { display: flex; align-items: center; gap: .6rem; text-decoration: none; font-weight: 600; }
.brand-mark {
  display: grid; place-items: center;
  width: 30px; height: 30px; border-radius: 3px;
  background: var(--akzent); color: #fff;
  font-family: var(--mono); font-size: .74rem; letter-spacing: .02em;
}
.brand-name { font-family: var(--serif); font-size: 1.06rem; }

.nav nav { display: flex; align-items: center; gap: 1.7rem; margin-left: auto; }
.nav nav a {
  text-decoration: none; font-size: .92rem; color: var(--text-leise);
  transition: color .15s;
}
.nav nav a:hover { color: var(--text); }
.nav-cta {
  padding: .45rem 1rem; border: 1px solid var(--linie);
  border-radius: var(--radius); color: var(--text) !important;
  background: var(--bg-karte);
}
.nav-toggle {
  display: none; background: none; border: 0; font-size: 1.4rem;
  margin-left: auto; cursor: pointer; color: var(--text);
}

/* ----------------------------------------------------------------- Hero -- */
.hero {
  display: grid; grid-template-columns: 1.05fr .95fr;
  gap: 4rem; align-items: center;
  max-width: var(--breit); margin: 0 auto;
  padding: 4.5rem 1.5rem 5.5rem;
}
.kicker {
  font-size: .78rem; font-weight: 600; letter-spacing: .1em;
  text-transform: uppercase; color: var(--akzent); margin-bottom: 1.1rem;
}
.hero h1 { margin-bottom: 1.6rem; }
.accent { color: var(--akzent); }
.lead { font-size: 1.14rem; color: var(--text-leise); max-width: 34rem; margin-bottom: .9rem; }
.lead-leise {
  font-size: 1rem; color: var(--text-leise); max-width: 34rem;
  padding-left: 1rem; border-left: 2px solid var(--linie); margin-bottom: 2rem;
}
.hero-actions { display: flex; gap: .8rem; flex-wrap: wrap; margin-bottom: 2.4rem; }

.btn {
  display: inline-block; padding: .78rem 1.5rem;
  border-radius: var(--radius); text-decoration: none;
  font-size: .96rem; font-weight: 500; border: 1px solid transparent;
  cursor: pointer; transition: transform .12s, background .15s, border-color .15s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--akzent); color: #fff; }
.btn-primary:hover { background: var(--akzent-hell); }
.btn-ghost { border-color: var(--linie); color: var(--text); background: var(--bg-karte); }
.btn-ghost:hover { border-color: var(--text-leise); }

.hero-fakten {
  display: flex; gap: 2.2rem; list-style: none;
  padding-top: 1.6rem; border-top: 1px solid var(--linie);
  font-size: .9rem; color: var(--text-leise);
}
.hero-fakten strong {
  display: block; font-family: var(--serif); font-size: 1.5rem;
  color: var(--text); line-height: 1.2;
}

/* Karten-Mock im Hero */
.hero-visual { position: relative; height: 400px; }
.card-mock {
  position: absolute; width: 300px; padding: 1.3rem 1.4rem;
  background: var(--bg-karte); border-radius: var(--radius);
  box-shadow: var(--schatten); border-top: 3px solid var(--akzent);
}
.card-mock[data-kat="chunk"]     { border-top-color: var(--kat-chunk); }
.card-mock[data-kat="pattern"]   { border-top-color: var(--kat-muster); }
.card-mock[data-kat="phrasal_verb"]{ border-top-color: var(--kat-pv); }
.card-mock-2 { top: 120px; left: 70px; rotate: -2deg; }
.card-mock-3 { top: 250px; left: 20px; rotate: 1.5deg; }
.card-cat {
  font-size: .68rem; font-weight: 600; letter-spacing: .09em;
  text-transform: uppercase; color: var(--text-leise);
}
.card-text {
  font-family: var(--serif); font-size: 1.5rem; margin: .5rem 0 .7rem;
}
.card-situation { font-size: .88rem; color: var(--text-leise); font-style: italic; }
.card-answer {
  font-size: .95rem; margin-top: .5rem; padding-top: .5rem;
  border-top: 1px solid var(--linie);
}

/* -------------------------------------------------------------- Section -- */
.section { padding: 5.5rem 1.5rem; }
.section > * { max-width: var(--breit); margin-left: auto; margin-right: auto; }
.section-head { max-width: 42rem; margin-bottom: 3rem; }
.section-lead { font-size: 1.06rem; color: var(--text-leise); margin-top: 1rem; }
.section-dunkel { background: var(--bg-dunkel); color: var(--text-hell); }
.section-dunkel .section-lead,
.section-dunkel .kicker { color: var(--text-hell-leise); }
.section-dunkel .kicker { color: var(--akzent-hell); }
.section-akzent { background: var(--bg-karte); }

/* -------------------------------------------------------------- Problem -- */
.zwei-spalten { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; }
.spalte h3 { margin-bottom: 1rem; font-family: var(--sans); font-weight: 600; font-size: .95rem;
             letter-spacing: .04em; text-transform: uppercase; }
.spalte-gut h3 { color: var(--akzent); }
.spalte-schlecht h3 { color: #a8563f; }
.spalte ul { list-style: none; }
.spalte li {
  padding: .6rem 0 .6rem 2rem; position: relative;
  border-bottom: 1px solid var(--linie); font-size: .98rem; color: var(--text-leise);
}
.spalte li::before {
  position: absolute; left: 0; top: .6rem; font-weight: 700;
}
.tick li::before { content: "✓"; color: var(--akzent); }
.kreuz li::before { content: "✗"; color: #b06a52; }
.spalte em { color: var(--text); font-style: italic; }

.zitat {
  margin: 3.5rem auto 0; max-width: 34rem; text-align: center;
  font-family: var(--serif); font-size: 1.4rem; font-style: italic;
  color: var(--text); line-height: 1.4;
}
.zitat cite {
  display: block; margin-top: .8rem; font-family: var(--sans);
  font-size: .82rem; font-style: normal; color: var(--text-leise);
  letter-spacing: .04em; text-transform: uppercase;
}

/* ------------------------------------------------------------ Stationen -- */
.stationen {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem;
}
.station {
  padding: 1.6rem 1.4rem; border-radius: var(--radius);
  background: rgba(255,255,255,.04); border: 1px solid var(--linie-dunkel);
}
.station-nr {
  display: block; font-family: var(--mono); font-size: .8rem;
  color: var(--akzent-hell); margin-bottom: 1rem;
}
.station h3 { font-family: var(--sans); font-weight: 600; font-size: 1rem; margin-bottom: .6rem; }
.station-frage {
  font-family: var(--serif); font-size: 1.05rem; font-style: italic;
  color: var(--text-hell); margin-bottom: .7rem;
}
.station-desc { font-size: .89rem; color: var(--text-hell-leise); }
.station em { color: var(--text-hell); font-style: italic; }
.station-desc em { color: var(--akzent-hell); }

/* ---------------------------------------------------------- Kategorien -- */
.kat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.2rem; }
.kat {
  padding: 1.3rem 1.2rem; background: var(--bg-karte); border-radius: var(--radius);
  border-left: 3px solid var(--kat-farbe, var(--akzent)); box-shadow: var(--schatten);
}
.kat-zahl { font-family: var(--serif); font-size: 2rem; line-height: 1; }
.kat-name { font-size: .93rem; font-weight: 600; margin-top: .3rem; }
.kat-farbname {
  font-size: .74rem; color: var(--text-leise); letter-spacing: .05em;
  text-transform: uppercase; margin-top: .2rem;
}

.beispiele { margin-top: 4rem; }
.beispiele h3 { margin-bottom: 1.5rem; }
.bsp-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.2rem; }
.bsp {
  padding: 1.3rem; background: var(--bg-karte); border-radius: var(--radius);
  border-top: 3px solid var(--kat-farbe, var(--akzent)); box-shadow: var(--schatten);
}
.bsp-text { font-family: var(--serif); font-size: 1.35rem; margin-bottom: .5rem; }
.bsp-funktion {
  font-size: .74rem; letter-spacing: .06em; text-transform: uppercase;
  color: var(--text-leise); margin-bottom: .8rem;
}
.bsp-situation { font-size: .9rem; color: var(--text-leise); font-style: italic; }
.bsp-deutsch {
  font-size: .88rem; margin-top: .7rem; padding-top: .7rem;
  border-top: 1px solid var(--linie); color: var(--akzent);
}

/* -------------------------------------------------------------- Metriken -- */
.metrik-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 2rem; }
.metrik { text-align: left; }
.metrik-wert {
  display: block; font-family: var(--serif); font-size: clamp(2rem, 4vw, 2.9rem);
  color: var(--akzent); line-height: 1.05;
}
.metrik-label {
  display: block; margin-top: .4rem; font-size: .88rem; color: var(--text-leise);
}

/* -------------------------------------------------------------- Feedback -- */
.feedback-demo { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.fb { padding: 1.6rem; border-radius: var(--radius); border: 1px solid var(--linie-dunkel); }
.fb-schlecht { background: rgba(190,18,60,.07); }
.fb-gut { background: rgba(46,125,111,.1); border-color: rgba(61,157,140,.4); }
.fb-label {
  font-size: .72rem; letter-spacing: .08em; text-transform: uppercase;
  color: var(--text-hell-leise); display: block; margin-bottom: 1rem;
}
.fb-gross { font-family: var(--serif); font-size: 1.5rem; margin-bottom: .7rem; }
.fb-schlecht .fb-gross { color: #e8836b; }
.fb-gut .fb-gross { color: var(--akzent-hell); }
.fb-klein { font-size: .95rem; color: var(--text-hell); margin-bottom: .5rem; }
.fb-klein em { font-style: italic; }
.fb-note { font-size: .84rem; color: var(--text-hell-leise); }
.feedback-begruendung {
  max-width: 38rem; margin-top: 2.5rem; font-size: 1rem;
  color: var(--text-hell-leise); border-left: 2px solid var(--akzent-hell);
  padding-left: 1.2rem;
}

/* ------------------------------------------------------------------- CTA -- */
.section-cta { background: var(--akzent); color: #fff; padding: 5rem 1.5rem; }
.cta-inner { max-width: 36rem; margin: 0 auto; text-align: center; }
.section-cta .kicker { color: rgba(255,255,255,.75); }
.cta-lead { font-size: 1.05rem; color: rgba(255,255,255,.88); margin: 1rem 0 2rem; }
.cta-form { display: flex; gap: .6rem; flex-wrap: wrap; justify-content: center; }
.cta-form input {
  flex: 1 1 16rem; padding: .78rem 1rem; font-size: .96rem;
  border: 1px solid rgba(255,255,255,.35); border-radius: var(--radius);
  background: rgba(255,255,255,.12); color: #fff; font-family: var(--sans);
}
.cta-form input::placeholder { color: rgba(255,255,255,.6); }
.cta-form input:focus { outline: 2px solid #fff; outline-offset: 1px; }
.section-cta .btn-primary { background: #fff; color: var(--akzent); }
.section-cta .btn-primary:hover { background: #f0f4f2; }
.cta-hinweis {
  margin-top: 1.2rem; font-size: .86rem; color: rgba(255,255,255,.78);
}
.cta-hinweis.fehler { color: #ffd9cf; font-weight: 500; }
.cta-hinweis.erfolg { color: #fff; font-weight: 500; }

/* ----------------------------------------------------------------- Fuss -- */
.fuss { background: var(--bg-dunkel); color: var(--text-hell-leise); padding: 3rem 1.5rem; }
.fuss-inner { max-width: var(--breit); margin: 0 auto; font-size: .9rem; }
.fuss-inner > p { margin-bottom: .7rem; }
.fuss-inner strong { color: var(--text-hell); font-family: var(--serif); font-size: 1.05rem; }
.fuss-klein { max-width: 44rem; font-size: .82rem; }
.fuss nav { display: flex; gap: 1.5rem; margin-top: 1.3rem; }
.fuss a { color: var(--text-hell-leise); text-decoration: none; font-size: .86rem; }
.fuss a:hover { color: var(--text-hell); }

/* ------------------------------------------------------------ Responsive -- */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 3rem; padding-top: 3rem; }
  .hero-visual { height: 330px; }
  .stationen { grid-template-columns: repeat(2, 1fr); }
  .nav nav { display: none; }
  .nav nav.offen {
    display: flex; flex-direction: column; align-items: flex-start;
    position: absolute; top: 100%; left: 0; right: 0;
    padding: 1rem 1.5rem 1.5rem; background: var(--bg-hell);
    border-bottom: 1px solid var(--linie); gap: 1rem;
  }
  .nav-toggle { display: block; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  .zwei-spalten, .feedback-demo { grid-template-columns: 1fr; gap: 2rem; }
  .stationen { grid-template-columns: 1fr; }
  .hero-fakten { flex-wrap: wrap; gap: 1.4rem; }
  .card-mock { width: 260px; }
  .card-mock-2 { left: 40px; }
  .card-mock-3 { left: 10px; }
}

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