/* Schriften lokal (SIL Open Font License), kein Abruf bei Google */
@font-face {
  font-family: 'Source Serif 4';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/source-serif-4-italic.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Source Serif 4';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/source-serif-4-normal.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Source Serif 4';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/source-serif-4-normal.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/ibm-plex-mono-400.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/ibm-plex-mono-500.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/space-grotesk-500.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/space-grotesk-500.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --ink: #111;
  --muted: #555;
  --paper: #f3f3f1;
  --serif: "Source Serif 4", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --gutter: 6vw;
}

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

html { scroll-behavior: smooth; }

body {
  min-height: 100vh;
  background-color: var(--paper);
  font-family: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  color: var(--ink);
  overflow-x: hidden;
}

/* Papier-Foto hochkant: Knick liegt waagerecht in der Mitte */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background: url("../img/paper-hoch.jpg") center / cover no-repeat;
}

main {
  position: relative;
  z-index: 1;
}

/* Grundraster: zwei Papierhälften */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.split > * {
  padding: 0 var(--gutter);
}

section {
  padding: 8vh 0;
}

h1, h2, h3 {
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-weight: 600;
  letter-spacing: -0.01em;
}

h2 {
  font-size: clamp(1.4rem, 2vw, 1.85rem);
  line-height: 1.08;
}

/* Fließtext in Serif (warm, gut lesbar); Mono bleibt für Labels, Buttons, Eckdaten */
p,
dd,
.legal li {
  font-family: var(--serif);
  font-size: 1.02rem;
  line-height: 1.6;
}

.label,
.phase-num,
.verb,
.form-note,
.form-error {
  font-family: var(--mono);
}

.label {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

a { color: inherit; }

/* ---------- Hero ---------- */
/* Hero füllt genau die obere Papierhälfte: alles Wichtige steht über dem Knick */
.hero {
  min-height: 50vh;
  min-height: 50svh;
  align-items: center;
  padding: 3.5vh 0 3vh;
}

.hero .left {
  display: flex;
  justify-content: center;
}

.portrait { max-width: 100%; }

.photo-box {
  /* Breite so, dass Foto + Handschrift über den Knick passen */
  width: min(21vw, 280px, calc((50vh - 170px) * 0.75));
  aspect-ratio: 3 / 4;
}

/* persönlicher Satz unter dem Foto */
/* Zitat in der Schreibmaschinen-Schrift der Eckdaten */
.hero-quote {
  margin-top: 0.9rem;
  max-width: 26ch;
  text-wrap: balance;
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.6;
}

.photo-box img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero h1 {
  font-size: clamp(1.7rem, min(2.6vw, 4.4vh), 2.4rem);
  line-height: 1.06;
  max-width: 18ch;
}

.hero .intro {
  margin-top: 1.1rem;
  max-width: 58ch;
}

.hero .intro p + p { margin-top: 0.7rem; }

.hero .cta { margin-top: 1.4rem; }

/* Button mit Punkt */
.cta {
  display: inline-flex;
  align-items: center;
  gap: 1.6rem;
  padding: 0.85rem 1.7rem 0.85rem 1.6rem;
  border: 1.5px solid var(--ink);
  background: transparent;
  font: inherit;
  font-size: 0.88rem;
  letter-spacing: 0.02em;
  color: var(--ink);
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s;
}

.cta::after {
  content: "";
  flex: none;
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  background: currentColor;
}

.cta:hover,
.cta:focus-visible {
  background: var(--ink);
  color: var(--paper);
  outline: none;
}

/* Hauptaktion: in Tinte gefüllt, damit sie sich von Nebenaktionen abhebt */
.cta.primary {
  background: var(--ink);
  color: var(--paper);
}

.cta.primary:hover,
.cta.primary:focus-visible {
  background: transparent;
  color: var(--ink);
}

/* ---------- Logo-Band ---------- */
.logos {
  padding: 2.4vh 0;
  border-top: 1.5px solid var(--ink);
  border-bottom: 1.5px solid var(--ink);
  margin: 0 var(--gutter);
}

.logo-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1.6rem 2.4rem;
  margin-top: 1.1rem;
}

/* Höhen optisch angeglichen: breite Wortmarken kleiner, kompakte größer */
.logo-row img {
  display: block;
  height: 24px;
  width: auto;
  opacity: 0.85;
}

.logo-row .tum { height: 26px; }
.logo-row .ik { height: 19px; }
.logo-row .infineon { height: 34px; }
.logo-row .hipp { height: 24px; }
.logo-row .dhl { height: 17px; }

/* ---------- Framework: das Herzstück der Seite ---------- */
.framework-head { margin: 0 var(--gutter); }
.framework-head h2 {
  margin-top: 0.6rem;
  max-width: 22ch;
  font-size: clamp(1.8rem, 2.8vw, 2.6rem);
}

/* Drei Phasen als Karten nebeneinander */
.phases {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
  margin: 5vh var(--gutter) 0;
}

.phase {
  display: flex;
  flex-direction: column;
  padding: 1.6rem 1.6rem 1.5rem;
  border: 1.5px solid var(--ink);
}

.phase-num {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.phase-num .num {
  font-family: "Space Grotesk", system-ui, sans-serif;
  font-weight: 600;
  font-size: 2.6rem;
  line-height: 1;
  letter-spacing: -0.02em;
  text-transform: none;
}

.phase h3 {
  margin-top: 1.1rem;
  min-height: 2.24em; /* zwei Zeilen */
  font-size: clamp(1.25rem, 1.7vw, 1.55rem);
  line-height: 1.12;
}

.phase .verb {
  margin-top: 0.35rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.meta {
  margin-top: 1rem;
  list-style: none;
  font-size: 0.8rem;
  line-height: 1.6;
}

.meta li::before { content: "— "; }

/* zweiter Block füllt die Höhe, damit die Links unten auf einer Linie stehen */
.phase > div:last-child {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.phase dl { margin-top: 1.2rem; flex: 1; }

.phase dt {
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.phase dd {
  margin: 0.25rem 0 0.9rem;
  font-size: 0.95rem;
  line-height: 1.55;
}

.phase-link {
  align-self: flex-start;
  font-size: 0.85rem;
  text-decoration: none;
  border-bottom: 1.5px solid currentColor;
  padding-bottom: 0.15rem;
}

.phase-link:hover { border-bottom-width: 3px; }

/* Phase 3 = Empfehlung: in Tinte gedruckt */
.phase.featured {
  background: var(--ink);
  color: var(--paper);
}

.phase.featured .verb { color: rgba(243, 243, 241, 0.65); }

.badge {
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ---------- Formulare ---------- */
form { max-width: 520px; }

.field {
  display: flex;
  flex-direction: column;
  margin-bottom: 1.3rem;
}

/* Eingabe sitzt über der Linie, Beschriftung darunter */
.field input,
.field select {
  order: 1;
  width: 100%;
  padding: 0.4rem 0;
  border: 0;
  border-bottom: 1.5px solid var(--ink);
  border-radius: 0;
  background: transparent;
  font: inherit;
  font-size: 0.9rem;
  color: var(--ink);
  outline: none;
  appearance: none;
}

.field select {
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8'><path d='M1 1l5 5 5-5' fill='none' stroke='%23111' stroke-width='1.5'/></svg>") right 0.2rem center / 12px 8px no-repeat;
  cursor: pointer;
}

.field input:focus,
.field select:focus { border-bottom-width: 2.5px; }

.field label {
  order: 2;
  margin-top: 0.35rem;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}

.form-note {
  margin-top: 0.9rem;
  font-size: 0.75rem;
  color: var(--muted);
}

.contact .lead { margin-top: 1rem; max-width: 42ch; }

.contact .mail {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.85rem;
}

/* ---------- Über ---------- */
.about p { max-width: 54ch; }
.about p + p { margin-top: 0.7rem; }

.signature {
  display: block;
  width: 150px;
  height: auto;
  margin-top: 1.4rem;
}

.speaker-link {
  display: inline-block;
  margin-top: 1.6rem;
}

/* ---------- Newsletter ---------- */
.newsletter-lead { max-width: 46ch; margin: 0.9rem 0 1.4rem; }

/* Felder paarweise nebeneinander: halbe Höhe */
.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 1.6rem;
}

/* ---------- Über + Newsletter nebeneinander ---------- */
.duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: start;
}

.duo > * { margin: 0 var(--gutter); }

.about-text { margin-top: 0.9rem; }

/* Newsletter wie ein Abschnitt zum Ausschneiden */
.coupon {
  position: relative;
  padding: 2.2rem 2.2rem 1.8rem;
  border: 1.5px dashed var(--ink);
}

.coupon::before {
  content: "✂";
  position: absolute;
  top: -1.05rem;
  left: 1.4rem;
  padding: 0 0.4rem;
  background: var(--paper);
  font-size: 1.6rem;
  line-height: 1.3;
}

.thanks { font-family: var(--serif); font-size: 1.02rem; line-height: 1.55; }

.form-error {
  margin-top: 0.9rem;
  font-size: 0.8rem;
  color: #a12a1a;
}

/* Honigtopf gegen Spam-Bots, für Menschen unsichtbar */
.hp { position: absolute; left: -9999px; }

/* ---------- Footer ---------- */
footer {
  position: relative;
  z-index: 1;
  margin: 0 var(--gutter);
  padding: 1.4rem 0 2rem;
  border-top: 1.5px solid var(--ink);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.75rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.6rem;
}

.form-note a { color: inherit; }


/* ---------- Handy ---------- */
@media (max-width: 760px) {
  :root { --gutter: 16px; }

  .split { grid-template-columns: 1fr; }
  .split > * + * { margin-top: 1.4rem; }

  section { padding: 5vh 0; }

  .field-grid { grid-template-columns: 1fr; }

  .duo { grid-template-columns: 1fr; row-gap: 3rem; }
  .coupon { padding: 1.8rem 1.2rem 1.4rem; }

  .hero { padding: 3vh 0 4vh; }
  .hero .left { justify-content: flex-start; }
  /* Foto kleiner, damit die Headline auf dem ersten Bildschirm steht */
  .hero { min-height: 0; }
  .photo-box { width: 55%; max-width: 230px; }
  .phase h3 { min-height: 0; }
  .hero h1 { font-size: 1.85rem; }

  /* Buttons über die volle Breite, Text in einer Zeile */
  .cta {
    width: 100%;
    justify-content: space-between;
    padding: 1rem 1.2rem;
    font-size: 0.9rem;
  }

  /* ab 16px zoomt iOS beim Antippen nicht mehr in die Felder */
  .field input,
  .field select { font-size: 16px; padding: 0.55rem 0; }

  /* Links mit genug Fläche zum Tippen (mind. 44px hoch) */
  .phase-link,
  .contact .mail,
  footer a {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
  }

  .phase-link { border-bottom: 0; text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1.5px; }

  .phase dt,
  .label,
  .phase-num { font-size: 0.78rem; }

  .logo-row { justify-content: flex-start; gap: 1.2rem 1.8rem; }

  footer { flex-direction: column; gap: 0.2rem; padding-bottom: calc(2rem + env(safe-area-inset-bottom)); }
  .footer-links { flex-direction: column; gap: 0; }

  .phases { grid-template-columns: 1fr; gap: 1rem; }
  .phase { padding: 1.4rem 1.2rem 1.3rem; }
}

/* ---------- Rechtsseiten (Impressum, Datenschutz) ---------- */
.legal {
  position: relative;
  z-index: 1;
  max-width: 720px;
  padding: 6vh var(--gutter) 8vh;
}

.legal .back {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 0.85rem;
}

.legal h1 {
  margin-top: 2rem;
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  line-height: 1.08;
}

.legal h2 {
  margin-top: 2.4rem;
  font-size: 1.1rem;
}

.legal h3 {
  margin-top: 1.4rem;
  font-size: 0.95rem;
}

.legal p,
.legal li {
  margin-top: 0.6rem;
  font-size: 0.88rem;
  line-height: 1.6;
}

.legal ul { padding-left: 1.2rem; }

.legal .stand {
  margin-top: 3rem;
  font-size: 0.75rem;
  color: var(--muted);
}