/* ==========================================================================
   Kretzmann Gruppe — kretzmann.ruhr
   Gestaltungssystem „Signatur & Revier": hell-editorial, Karminrot als
   sparsamer Akzent. Reines #FF0000 nur im Logo.
   ========================================================================== */

:root {
  --paper:       #F7F4EF;
  --paper-warm:  #EFEAE2;
  --ink:         #1D1D1B;
  --ink-mid:     #45443F;
  --ink-soft:    #74726B;
  --signal:      #A8231F;
  --signal-deep: #7E1A17;
  --linie:       #DDD6C9;

  --schrift-display: 'Literata', Georgia, 'Times New Roman', serif;
  --schrift-text:    'Inter', 'Segoe UI', system-ui, sans-serif;

  --umschlag: 1160px;
  --kopf-hoehe: 76px;
}

/* ---------- Grundlagen ---------- */

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--schrift-text);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--signal); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--signal-deep); }

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
  border-radius: 2px;
}

.umschlag {
  max-width: var(--umschlag);
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 56px);
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 10px 18px;
  z-index: 400;
}
.skip:focus { left: 12px; top: 12px; }

/* ---------- Typografie ---------- */

h1, h2, h3 {
  font-family: var(--schrift-display);
  font-weight: 500;
  line-height: 1.12;
  margin: 0 0 0.5em;
  font-variant-numeric: lining-nums;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.6rem, 7vw, 5rem); }
h2 { font-size: clamp(1.9rem, 4vw, 2.9rem); }
h3 { font-size: clamp(1.3rem, 2.4vw, 1.7rem); }

p { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

.label,
.nummer-label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 1.4em;
}

.nummer { color: var(--signal); margin-right: 0.7em; }

/* Signaturstrich: der Schwung der Unterschrift als Akzentlinie */
.signaturstrich {
  width: 76px;
  height: 14px;
  margin: 0.4rem 0 1.6rem;
  color: var(--signal);
  background: currentColor;
  -webkit-mask: url('../bilder/logo-signatur.svg') no-repeat center / contain;
  mask: url('../bilder/logo-signatur.svg') no-repeat center / contain;
}

/* ---------- Kopfzeile ---------- */

.kopf {
  position: sticky;
  top: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: var(--kopf-hoehe);
  padding: 0 clamp(20px, 4vw, 40px);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease;
}
.kopf.gescrollt { border-bottom-color: var(--linie); }

.kopf-marke {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}
.kopf-marke img { width: 116px; height: auto; }
.kopf-wortmarke {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1.35;
  color: var(--ink-mid);
}

.nav-liste {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.4vw, 34px);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-liste a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}
.nav-liste a:hover { color: var(--signal-deep); }
.nav-liste a.aktiv { border-bottom-color: var(--signal); }
.nav-liste .nav-kontakt {
  border: 1px solid var(--ink);
  border-radius: 999px;
  padding: 8px 20px;
}
.nav-liste .nav-kontakt:hover {
  background: var(--ink);
  color: var(--paper);
}

.nav-schalter { display: none; }

/* ---------- Hero ---------- */

.hero {
  min-height: calc(92vh - var(--kopf-hoehe));
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  padding: clamp(56px, 10vh, 120px) 0;
}
.hero h1 { max-width: 14em; }
.hero .signaturstrich { width: 110px; height: 20px; }
.hero-unterzeile {
  font-family: var(--schrift-display);
  font-style: italic;
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  color: var(--ink-mid);
  max-width: 32em;
}
.hero-weiter {
  position: absolute;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 1.4rem;
}
.hero-weiter:hover { color: var(--signal); }

/* ---------- Abschnitte ---------- */

.abschnitt { padding: clamp(72px, 11vw, 130px) 0; }
.abschnitt-warm { background: var(--paper-warm); }

/* ---------- 01 Gruppe ---------- */

.gruppe-raster {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}
.gruppe-bild { margin: 0; }
.gruppe-bild img { border-radius: 3px; }
.gruppe-bild figcaption,
.bereich-bild figcaption {
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin-top: 10px;
}

.zeitachse {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
  margin: clamp(48px, 7vw, 88px) 0 0;
  padding: clamp(28px, 4vw, 40px) 0 0;
  border-top: 1px solid var(--linie);
}
.zeitachse li {
  position: relative;
  padding-top: 18px;
}
.zeitachse li::before {
  content: '';
  position: absolute;
  top: -5px;
  left: 2px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--signal);
}
.zeit-jahr {
  display: block;
  font-family: var(--schrift-display);
  font-variant-numeric: lining-nums;
  font-size: 1.3rem;
  margin-bottom: 2px;
}
.todo-jahr { color: var(--ink-soft); }
.zeit-text {
  display: block;
  font-size: 0.85rem;
  color: var(--ink-mid);
  line-height: 1.45;
}

/* ---------- 02 Bereiche ---------- */

.bereich {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
  padding: clamp(40px, 6vw, 72px) 0;
}
.bereich + .bereich { border-top: 1px solid var(--linie); }
.bereich-bild { margin: 0; }
.bereich-bild img { border-radius: 3px; }
.bereich-getauscht .bereich-bild { order: 2; }
.bereich-getauscht .bereich-text { order: 1; }

.bereich-marke {
  display: block;
  font-size: 0.62em;
  color: var(--ink-soft);
  font-style: italic;
  margin-bottom: 0.15em;
}

.consulting-zitat {
  margin: 0;
  align-self: center;
}
.consulting-zitat p {
  font-family: var(--schrift-display);
  font-style: italic;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  line-height: 1.3;
  color: var(--ink-mid);
  border-left: 3px solid var(--signal);
  padding-left: clamp(20px, 3vw, 36px);
}

/* ---------- 03 Menschen ---------- */

.menschen-raster {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 6fr);
  gap: clamp(32px, 5vw, 80px);
  align-items: start;
}
.menschen-bild { margin: 0; position: sticky; top: calc(var(--kopf-hoehe) + 24px); }
.menschen-bild img { border-radius: 3px; }

.vita { margin-bottom: 1.6rem; }
.vita h3 { margin-bottom: 0.3em; }
.vita p { color: var(--ink-mid); }

.menschen-statement {
  font-family: var(--schrift-display);
  font-style: italic;
  font-size: clamp(1.2rem, 2.2vw, 1.5rem);
  line-height: 1.45;
  color: var(--ink);
  margin-top: 2.2rem;
}
.unterschrift { margin-top: 1.4rem; color: var(--signal); }

/* Signatur als maskiertes Element — Farbe über currentColor steuerbar */
.signatur-motiv {
  display: block;
  background: currentColor;
  -webkit-mask: url('../bilder/logo-signatur.svg') no-repeat left center / contain;
  mask: url('../bilder/logo-signatur.svg') no-repeat left center / contain;
}

/* ---------- 04 Revier ---------- */

.revier-raster {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 6fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}

.ort-liste {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
}
.ort-liste li {
  padding: 10px 0;
  border-bottom: 1px solid var(--linie);
  font-size: 0.95rem;
  color: var(--ink-mid);
}
.ort-liste li:first-child { border-top: 1px solid var(--linie); }
.ort-liste strong { color: var(--ink); }

.revier-karte svg { width: 100%; height: auto; }
.karte-fluss {
  fill: none;
  stroke: var(--ink-soft);
  stroke-width: 1.6;
  stroke-linecap: round;
  opacity: 0.55;
}
.karte-fluss-fein { stroke-width: 1; opacity: 0.35; }
.karte-flussname {
  font-family: var(--schrift-display);
  font-style: italic;
  font-size: 13px;
  fill: var(--ink-soft);
}
.karte-ort circle { fill: var(--ink); }
.karte-ort text {
  font-family: var(--schrift-text);
  font-size: 15px;
  font-weight: 500;
  fill: var(--ink);
  text-anchor: middle;
}
.karte-ort-sitz circle { fill: var(--signal); }
.karte-ort-sitz .karte-ring {
  fill: none;
  stroke: var(--signal);
  stroke-width: 1.4;
  opacity: 0.6;
}
.karte-ort-sitz text { font-weight: 600; }

/* ---------- 05 Perspektiven ---------- */

.karten {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(24px, 3.5vw, 44px);
  margin-top: clamp(32px, 5vw, 56px);
}
.karte {
  background: var(--paper-warm);
  border: 1px solid var(--linie);
  border-radius: 4px;
  padding: clamp(28px, 3.5vw, 44px);
}
.karte h3 { margin-bottom: 0.6em; }
.karte p { color: var(--ink-mid); font-size: 0.98rem; }
.karte-links {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
}
.karte-links li { margin-bottom: 0.6rem; }
.karte-links a { font-weight: 600; }

/* ---------- Footer ---------- */

.fuss {
  background: var(--ink);
  color: #CFCCC4;
  padding: clamp(56px, 8vw, 96px) 0 36px;
}
.fuss a { color: #F1EEE7; }
.fuss a:hover { color: #fff; }

.fuss-raster {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: clamp(32px, 5vw, 64px);
  padding-bottom: clamp(36px, 5vw, 56px);
  border-bottom: 1px solid #3A3935;
}
.fuss-marke { color: #F1EEE7; }
.fuss-firmierung {
  margin-top: 16px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.fuss-kontakt { font-style: normal; }
.fuss-verweise ul {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
}
.fuss-verweise li { margin-bottom: 0.5rem; }
.fuss-zeile {
  margin: 26px 0 0;
  font-size: 0.8rem;
  color: #8F8C84;
}
.fuss .todo { border-color: #6B4340; color: #B4AFA5; }

/* ---------- Unterseiten (Impressum, Datenschutz) ---------- */

.unterseite { max-width: 760px; }
.unterseite h1 { font-size: clamp(2rem, 5vw, 3rem); }
.unterseite h2 {
  font-size: 1.25rem;
  margin-top: 2.2em;
}

/* ---------- Platzhalter-Kästen ---------- */

.todo {
  border: 1.5px dashed var(--signal);
  border-radius: 4px;
  padding: 8px 14px;
  font-size: 0.82rem;
  color: var(--signal-deep);
  background: color-mix(in srgb, var(--signal) 5%, transparent);
  max-width: 46em;
}

/* ---------- Einblendungen ---------- */

.einblenden {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.einblenden.sichtbar {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .einblenden { opacity: 1; transform: none; transition: none; }
}

/* ---------- Responsive ---------- */

@media (max-width: 1100px) {
  .zeitachse { grid-template-columns: repeat(3, 1fr); row-gap: 34px; }
}

@media (max-width: 900px) {
  .nav-schalter {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: none;
    border: 1px solid var(--ink);
    border-radius: 999px;
    padding: 8px 18px;
    font: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--ink);
    cursor: pointer;
    position: relative;
    z-index: 220;
  }
  .nav-schalter-balken,
  .nav-schalter-balken::before {
    display: block;
    width: 16px;
    height: 2px;
    background: currentColor;
  }
  .nav-schalter-balken { position: relative; }
  .nav-schalter-balken::before {
    content: '';
    position: absolute;
    top: -5px;
  }
  .nav-liste[hidden] { display: none; }
  .nav-liste {
    position: fixed;
    inset: 0;
    z-index: 210;
    flex-direction: column;
    justify-content: center;
    gap: 26px;
    background: var(--paper);
    margin: 0;
  }
  .nav-liste a { font-size: 1.3rem; }
}

@media (max-width: 760px) {
  .gruppe-raster,
  .bereich,
  .menschen-raster,
  .revier-raster,
  .karten,
  .fuss-raster { grid-template-columns: 1fr; }
  .bereich-getauscht .bereich-bild { order: 0; }
  .bereich-getauscht .bereich-text { order: 0; }
  .menschen-bild { position: static; max-width: 440px; }
  .hero { min-height: 74vh; }
  .kopf-wortmarke { display: none; }
}

@media (max-width: 480px) {
  .zeitachse { grid-template-columns: repeat(2, 1fr); }
  body { font-size: 1rem; }
}