/* ==========================================================================
   Klick für Druck — www.k-f-d.ch
   Stylesheet · Druckerei Dietrich AG, Basel
   --------------------------------------------------------------------------
   Aufbau:
   01 Tokens        — Farben, Typo-Skala, Abstände
   02 Reset & Basis
   03 Typografie
   04 Layout-Helfer
   05 Header / Navigation
   06 Hero
   07 Sektionen & Komponenten
   08 Formular
   09 Footer
   10 Motion & Reduced Motion
   11 Responsive
   ========================================================================== */

/* 00 — SCHRIFT ===========================================================
   Archivo, variabel (Gewicht 400–700, Breite 88–100 %), auf den benötigten
   Zeichensatz reduziert: 43 KB. Selbst gehostet — dadurch keine Anfrage an
   einen Anbieter im Ausland, passend zum Versprechen der Marke und zum
   revidierten Schweizer Datenschutzgesetz.
   Lizenz: SIL Open Font License 1.1, siehe assets/fonts/OFL.txt          */

@font-face {
  font-family: "Archivo";
  src: url("/assets/fonts/archivo-var.woff2") format("woff2-variations"),
       url("/assets/fonts/archivo-var.woff2") format("woff2");
  font-weight: 400 700;
  font-stretch: 88% 100%;
  font-style: normal;
  font-display: swap;
}

/* 01 — TOKENS ============================================================= */

:root {
  /* Marke (CI-Vorgabe) */
  --navy:        #1a2e4a;   /* Primärfarbe   */
  --blue:        #1f4e79;   /* Sekundärfarbe */
  --mist:        #d6e4f0;   /* Akzentfarbe   */
  --cream:       #f8f6f1;   /* Hintergrund 2 */
  --paper:       #ffffff;   /* Hintergrund 1 */

  /* Abgeleitete Tiefen (für Overlays und dunkle Bänder) */
  --navy-900:    #0e1c2f;
  --navy-800:    #142642;
  --navy-700:    #23395a;

  /* Prozessfarben — Farbkontrollstreifen */
  --cyan:        #00aeef;
  --magenta:     #ec008c;
  --yellow:      #fff200;
  --key:         #1a2e4a;

  /* Kreislauf-Stufen (aus der KfD-Kreislaufgrafik entnommen) */
  --s1: #4e59b1;   /* Einrichten   */
  --s2: #527cb1;   /* Bestellen    */
  --s3: #45a8c6;   /* Lagerabgleich*/
  --s4: #55c38e;   /* Produktion   */
  --s5: #77ca2f;   /* Lieferung    */

  /* Text */
  --ink:         #1a2e4a;
  --ink-70:      #42536d;
  --ink-50:      #74839a;
  --line:        #e2e6ec;
  --line-dark:   rgba(255, 255, 255, .16);

  /* Typografie */
  --font: "Archivo", "Helvetica Neue", Helvetica, Arial, sans-serif;

  --t-display: clamp(2.9rem, 7.4vw, 6.2rem);
  --t-h1:      clamp(2.3rem, 5.4vw, 4.1rem);
  --t-h2:      clamp(1.75rem, 3.3vw, 2.9rem);
  --t-h3:      clamp(1.15rem, 1.6vw, 1.4rem);
  --t-lead:    clamp(1.05rem, 1.45vw, 1.3rem);
  --t-body:    1.0625rem;
  --t-small:   .9375rem;
  --t-label:   .7rem;

  /* Raster */
  --wrap:      1220px;
  --wrap-text: 760px;
  --gutter:    clamp(1.25rem, 5vw, 4rem);
  --sec-y:     clamp(4.5rem, 9vw, 8.5rem);
  --radius:    3px;

  --ease: cubic-bezier(.2, .7, .25, 1);
}

/* 02 — RESET & BASIS ====================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: var(--t-body);
  font-weight: 400;
  line-height: 1.65;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: inherit; text-decoration: none; }

button { font: inherit; color: inherit; }

::selection { background: var(--navy); color: #fff; }

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--navy);
  color: #fff;
  padding: .85rem 1.25rem;
  font-size: var(--t-small);
}
.skip-link:focus { left: 1rem; top: 1rem; }

/* 03 — TYPOGRAFIE ========================================================= */

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 600;
  line-height: 1.06;
  letter-spacing: -.028em;
  word-spacing: .04em;
  text-wrap: balance;
}

h1 { font-size: var(--t-h1); }
h2 { font-size: var(--t-h2); }
h3 { font-size: var(--t-h3); letter-spacing: -.015em; line-height: 1.25; }

p { margin: 0 0 1.15em; }
p:last-child { margin-bottom: 0; }

/* Übertitel — kleine Marke über jeder Sektion */
.eyebrow {
  display: flex;
  align-items: center;
  gap: .7rem;
  margin: 0 0 1.4rem;
  font-size: var(--t-label);
  font-weight: 600;
  letter-spacing: .19em;
  text-transform: uppercase;
  color: var(--ink-50);
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 3px;
  flex: none;
  background: linear-gradient(90deg,
    var(--cyan) 0 25%, var(--magenta) 25% 50%,
    var(--yellow) 50% 75%, var(--key) 75% 100%);
}
.eyebrow--light { color: rgba(255, 255, 255, .62); }

.lead {
  font-size: var(--t-lead);
  line-height: 1.55;
  color: var(--ink-70);
  letter-spacing: -.008em;
}

.measure { max-width: var(--wrap-text); }

/* 04 — LAYOUT-HELFER ====================================================== */

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--sec-y); }
.section--tight { padding-block: clamp(3rem, 5.5vw, 5rem); }
.section--cream { background: var(--cream); }
.section--mist  { background: var(--mist); }
.section--navy  { background: var(--navy); color: #fff; }
.section--navy .lead { color: rgba(255, 255, 255, .74); }

.sec-head { margin-bottom: clamp(2.25rem, 4vw, 3.5rem); }
.sec-head .lead { margin-top: 1.1rem; max-width: 58ch; }

/* Zweispaltiger Redaktions-Block: Titel links, Text rechts */
.editorial {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}
.editorial__aside { position: sticky; top: 110px; }

/* Buttons ---------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  padding: .95rem 1.6rem;
  border: 1px solid var(--navy);
  border-radius: var(--radius);
  background: var(--navy);
  color: #fff;
  font-size: var(--t-small);
  font-weight: 600;
  letter-spacing: .005em;
  cursor: pointer;
  transition: background .25s var(--ease), color .25s var(--ease),
              border-color .25s var(--ease), transform .25s var(--ease);
}
.btn:hover { background: var(--blue); border-color: var(--blue); }
.btn:active { transform: translateY(1px); }

.btn__arrow { transition: transform .3s var(--ease); }
.btn:hover .btn__arrow { transform: translateX(4px); }

.btn--ghost { background: transparent; color: var(--navy); }
.btn--ghost:hover { background: var(--navy); color: #fff; }

.btn--light {
  background: #fff; color: var(--navy); border-color: #fff;
}
.btn--light:hover { background: var(--mist); border-color: var(--mist); color: var(--navy); }

.btn--outline-light {
  background: transparent; color: #fff; border-color: rgba(255, 255, 255, .4);
}
.btn--outline-light:hover { background: #fff; color: var(--navy); border-color: #fff; }

.btn-row { display: flex; flex-wrap: wrap; gap: .9rem; }

/* Textlink mit Pfeil */
.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-size: var(--t-small);
  font-weight: 600;
  color: var(--blue);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color .25s var(--ease);
}
.arrow-link:hover { border-color: currentColor; }
.arrow-link svg { transition: transform .3s var(--ease); }
.arrow-link:hover svg { transform: translateX(4px); }

/* 05 — HEADER / NAVIGATION ================================================ */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background .35s var(--ease), box-shadow .35s var(--ease);
}
.site-header::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: var(--line-dark);
  opacity: 0;
  transition: opacity .35s var(--ease);
}
.site-header.is-solid { background: var(--navy-900); }
.site-header.is-solid::after { opacity: 1; }

/* Auf hellen Unterseiten sofort dunkel */
.site-header--solid { background: var(--navy-900); }

.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 76px;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: .8rem;
  margin-right: auto;
  color: #fff;
}
.nav__logo { width: 38px; height: 38px; flex: none; }
.nav__name {
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: -.005em;
  word-spacing: .12em;
  line-height: 1.1;
}
.nav__name span {
  display: block;
  font-size: .62rem;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .55);
  margin-top: 2px;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav__link {
  position: relative;
  font-size: .875rem;
  font-weight: 500;
  color: rgba(255, 255, 255, .78);
  padding-block: .4rem;
  transition: color .22s var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s var(--ease);
}
.nav__link:hover { color: #fff; }
.nav__link:hover::after,
.nav__link[aria-current="page"]::after { transform: scaleX(1); }
.nav__link[aria-current="page"] { color: #fff; }

.nav__cta {
  padding: .62rem 1.15rem;
  border: 1px solid rgba(255, 255, 255, .35);
  border-radius: var(--radius);
  font-size: .8125rem;
  font-weight: 600;
  color: #fff;
  transition: background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
}
.nav__cta:hover { background: #fff; color: var(--navy); border-color: #fff; }

/* Burger */
.nav__burger {
  display: none;
  width: 44px; height: 44px;
  margin-right: -10px;
  border: 0;
  background: none;
  cursor: pointer;
  position: relative;
}
.nav__burger span {
  position: absolute;
  left: 11px;
  width: 22px; height: 2px;
  background: #fff;
  transition: transform .3s var(--ease), opacity .2s var(--ease);
}
.nav__burger span:nth-child(1) { top: 16px; }
.nav__burger span:nth-child(2) { top: 22px; }
.nav__burger span:nth-child(3) { top: 28px; }
.nav__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* 06 — HERO =============================================================== */

.hero {
  position: relative;
  min-height: min(100svh, 900px);
  display: flex;
  align-items: flex-end;
  padding-top: 140px;
  padding-bottom: clamp(3rem, 7vw, 6rem);
  background: var(--navy-900);
  overflow: hidden;
}
.hero__media {
  position: absolute;
  inset: 0;
}
.hero__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center 42%;
}
.hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(14, 28, 47, .82) 0%, rgba(14, 28, 47, .55) 38%, rgba(14, 28, 47, .93) 100%),
    linear-gradient(90deg, rgba(14, 28, 47, .75) 0%, rgba(14, 28, 47, .1) 65%);
}

/* Farbkontrollstreifen — die Signatur der Seite.
   Steht am linken Rand wie der Kontrollstreifen am Bogenrand im Druck. */
.control-strip {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 7px;
  z-index: 3;
  display: flex;
  flex-direction: column;
}
.control-strip i { flex: 1; display: block; }
.control-strip i:nth-child(1) { background: var(--cyan); }
.control-strip i:nth-child(2) { background: var(--magenta); }
.control-strip i:nth-child(3) { background: var(--yellow); }
.control-strip i:nth-child(4) { background: #fff; opacity: .9; }

.hero__inner { position: relative; z-index: 2; width: 100%; }

.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: .8rem;
  font-size: var(--t-label);
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .7);
  margin-bottom: 1.6rem;
}
.hero__eyebrow b { font-weight: 600; color: #fff; }
.hero__eyebrow em {
  font-style: normal;
  width: 4px; height: 4px;
  background: var(--cyan);
  border-radius: 50%;
}

.hero h1 {
  word-spacing: .06em;          /* gleicht die enge Laufweite aus */
  font-size: var(--t-display);
  font-weight: 600;
  font-stretch: 92%;
  letter-spacing: -.042em;
  line-height: .93;
  color: #fff;
  margin-bottom: .35em;
}

.hero__claim {
  font-size: clamp(1.35rem, 2.6vw, 2.1rem);
  font-weight: 500;
  letter-spacing: -.025em;
  color: #fff;
  margin-bottom: 1.5rem;
}

.hero__principle {
  border-left: 2px solid var(--cyan);
  padding-left: 1.15rem;
  margin-bottom: 2rem;
  max-width: 42ch;
}
.hero__principle q {
  display: block;
  font-size: clamp(1.02rem, 1.5vw, 1.2rem);
  font-weight: 500;
  color: #fff;
  quotes: "«" "»";
  letter-spacing: -.012em;
}
.hero__principle small {
  display: block;
  margin-top: .35rem;
  font-size: .8125rem;
  color: rgba(255, 255, 255, .6);
}

.hero__text {
  max-width: 46ch;
  color: rgba(255, 255, 255, .82);
  font-size: var(--t-lead);
  line-height: 1.5;
  margin-bottom: 2.2rem;
}

/* Kleiner Hero für Unterseiten */
.pagehead {
  background: var(--navy-900);
  color: #fff;
  padding-top: clamp(9rem, 14vw, 12rem);
  padding-bottom: clamp(3.5rem, 7vw, 6rem);
  position: relative;
  overflow: hidden;
}
.pagehead h1 {
  font-size: var(--t-h1);
  font-stretch: 94%;
  letter-spacing: -.035em;
  color: #fff;
  max-width: 18ch;
}
.pagehead .lead { margin-top: 1.25rem; max-width: 52ch; color: rgba(255, 255, 255, .74); }

/* 07 — SEKTIONEN & KOMPONENTEN ============================================ */

/* Key-Points-Streifen ---------------------------------------------------- */
.keypoints {
  background: var(--cream);
  border-bottom: 1px solid var(--line);
}
.keypoints__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.keypoint {
  padding: clamp(2rem, 3.4vw, 2.9rem) clamp(1.1rem, 2vw, 2rem);
  border-left: 1px solid var(--line);
  position: relative;
}
.keypoint:first-child { border-left: 0; padding-left: 0; }
.keypoint:last-child  { padding-right: 0; }
.keypoint::before {
  content: "";
  position: absolute;
  top: 0; left: -1px; right: 0;
  height: 3px;
  background: var(--kp, var(--cyan));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .45s var(--ease);
}
.keypoint.is-in::before { transform: scaleX(1); }
.keypoint:nth-child(1) { --kp: var(--cyan); }
.keypoint:nth-child(2) { --kp: var(--magenta); }
.keypoint:nth-child(3) { --kp: var(--yellow); }
.keypoint:nth-child(4) { --kp: var(--navy); }

.keypoint h3 {
  font-size: 1.0625rem;
  margin-bottom: .4rem;
}
.keypoint p {
  font-size: var(--t-small);
  color: var(--ink-70);
  line-height: 1.5;
}

/* Pull-Quote / Prinzip-Box ---------------------------------------------- */
.pullquote {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding-block: clamp(2rem, 4vw, 3.2rem);
  margin-block: clamp(2.5rem, 5vw, 4rem);
}
.pullquote p {
  font-size: clamp(1.5rem, 3vw, 2.35rem);
  font-weight: 600;
  letter-spacing: -.03em;
  line-height: 1.15;
  margin-bottom: .8rem;
}
.pullquote small { color: var(--ink-50); font-size: var(--t-small); }

.principle-box {
  background: var(--navy);
  color: #fff;
  text-align: center;
  padding: clamp(3rem, 7vw, 5.5rem) var(--gutter);
  position: relative;
  overflow: hidden;
}
.principle-box q {
  display: block;
  font-size: clamp(1.5rem, 3.6vw, 2.8rem);
  font-weight: 500;
  letter-spacing: -.03em;
  line-height: 1.2;
  quotes: "«" "»";
  max-width: 22ch;
  margin-inline: auto;
}
.principle-box small {
  display: block;
  margin-top: 1.1rem;
  font-size: var(--t-small);
  color: rgba(255, 255, 255, .6);
}
.principle-box__bar {
  position: absolute;
  inset: auto 0 0 0;
  height: 4px;
  display: flex;
}
.principle-box__bar i { flex: 1; }
.principle-box__bar i:nth-child(1) { background: var(--cyan); }
.principle-box__bar i:nth-child(2) { background: var(--magenta); }
.principle-box__bar i:nth-child(3) { background: var(--yellow); }
.principle-box__bar i:nth-child(4) { background: var(--navy-700); }

/* Ablauf — 5 Schritte als eingefärbte Spur --------------------------------- */
.process {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: clamp(1rem, 2vw, 1.75rem);
  counter-reset: step;
}
.step {
  position: relative;
  padding-top: 2.9rem;
}
.step::before {           /* die Spur */
  content: "";
  position: absolute;
  top: 13px; left: 0; right: calc(-1 * clamp(1rem, 2vw, 1.75rem));
  height: 2px;
  background: var(--sc);
  opacity: .3;
}
.step:last-child::before { right: 0; }
.step::after {            /* der Knoten */
  content: "";
  position: absolute;
  top: 6px; left: 0;
  width: 16px; height: 16px;
  border-radius: 50%;
  border: 3px solid var(--sc);
  background: var(--paper);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.section--cream .step::after { background: var(--cream); }
.step:hover::after { transform: scale(1.18); box-shadow: 0 0 0 6px color-mix(in srgb, var(--sc) 16%, transparent); }

.step:nth-child(1) { --sc: var(--s1); }
.step:nth-child(2) { --sc: var(--s2); }
.step:nth-child(3) { --sc: var(--s3); }
.step:nth-child(4) { --sc: var(--s4); }
.step:nth-child(5) { --sc: var(--s5); }

.step__no {
  display: block;
  font-size: var(--t-label);
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--sc);
  margin-bottom: .55rem;
}
.step h3 { margin-bottom: .5rem; }
.step p { font-size: var(--t-small); color: var(--ink-70); line-height: 1.55; }

/* Der Kreislauf als Rad ---------------------------------------------------
   Eine einzige Variable steuert die Mechanik: --r ist die Ringdrehung in
   Grad. Der Ring dreht um +r, jeder Knoten intern um -r zurueck — dadurch
   stehen Icons und Zahlen immer aufrecht. 72 Grad pro Schritt, damit sich
   das Fuenfeck nach jeder Drehung exakt auf sich selbst abbildet.          */

.wheelsec__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 5rem);
  /* kein align-items:start — die Bühne muss auf volle Zeilenhöhe wachsen,
     sonst hat position:sticky keinen Weg zum Kleben */
  align-items: stretch;
}

.wheelsec__sticky {
  position: sticky;
  top: max(104px, calc(50vh - 230px));
}

.wheel {
  width: 100%;
  max-width: 460px;
  height: auto;
  margin-inline: auto;
  overflow: visible;
}

/* Drehung ohne Transition — sie folgt Bild fuer Bild der Scrollposition.
   rotate und scale stehen bewusst als Einzel-Eigenschaften da: zusammen
   ergeben sie dieselbe Matrix wie transform: rotate(...) scale(...), lassen
   sich aber getrennt schalten. Nur die Vergroesserung des aktiven Knotens
   bekommt eine eigene, kurze Zeit.                                        */
.wheel__ring {
  rotate: calc(var(--r) * 1deg);
  transform-origin: 210px 210px;
}
.wheel__upright {
  rotate: calc(var(--r) * -1deg);
  transition: scale .45s var(--ease);
}

.wheel__track {
  fill: none;
  stroke: #dfe4ec;
  stroke-width: 2;
}

.wheel__arc {
  fill: none;
  stroke: var(--wc, var(--s1));
  stroke-width: 4;
  stroke-linecap: round;
  stroke-dasharray: 100;
  stroke-dashoffset: calc(100 - var(--p, 20));
  transition: stroke .45s var(--ease);
}

.wheel__disc {
  fill: var(--cream);
  stroke: #ccd4e0;
  stroke-width: 3;
  transition: stroke .45s var(--ease), fill .45s var(--ease);
}
.wheel__icon {
  fill: none;
  stroke: #9aa5b6;
  stroke-width: 1.65;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: stroke .5s var(--ease);
}
.wheel__num {
  text-anchor: middle;
  dominant-baseline: middle;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  fill: #9aa5b6;
  transition: fill .5s var(--ease);
}

/* Aktiver Knoten — nur hier kommt Farbe ins Spiel */
/* Der aktive Knoten wird etwas groesser — gedreht wird trotzdem gegenlaeufig */
.wheel__node.is-active .wheel__upright { scale: 1.08; }
.wheel__node.is-active .wheel__disc { stroke: var(--nc); stroke-width: 3.5; fill: #fff; }
.wheel__node.is-active .wheel__icon { stroke: var(--nc); }
.wheel__node.is-active .wheel__num  { fill: var(--nc); }

.wheel__node[data-step="0"] { --nc: var(--s1); }
.wheel__node[data-step="1"] { --nc: var(--s2); }
.wheel__node[data-step="2"] { --nc: var(--s3); }
.wheel__node[data-step="3"] { --nc: var(--s4); }
.wheel__node[data-step="4"] { --nc: var(--s5); }

.wheel__node { cursor: pointer; }
/* Kein Kasten um den Knoten — auch nicht beim Mausklick. :focus-visible
   allein greift dort nicht, der Rahmen blieb deshalb stehen. Die Tastatur
   behaelt einen Ring auf der Scheibe, der zur runden Form passt. */
.wheel__node:focus { outline: none; }
.wheel__node:focus-visible .wheel__disc { stroke: var(--navy); stroke-width: 4; }

/* Die Marke steht still — sie ist der Bezugspunkt, nicht Teil der Mechanik */
.wheel__brand { pointer-events: none; }

/* Textspalte als Slider ---------------------------------------------------
   Panel und Ausloeser liegen in derselben Rasterzelle uebereinander: die
   Ausloeser geben dem Abschnitt seine Scrolllaenge, das Panel klebt darin.
   Beim Wechsel faehrt die neue Karte von unten herein, die alte nach oben
   hinaus — der Scroll selbst bleibt unangetastet.                          */

.wheelsec__track { display: grid; }
.wheelsec__track > * { grid-area: 1 / 1; }

.wheelsec__panel { align-self: start; }
.js .wheelsec__panel {
  position: sticky;
  /* Panelhoehe ~220 px — so liegt seine Mitte auf der Radachse */
  top: max(112px, calc(50vh - 110px));
  z-index: 1;
}

/* Ausloeser und Stapel gibt es nur mit JavaScript. Ohne JS stehen die fuenf
   Karten schlicht untereinander — sonst laegen sie uebereinander.          */
.wheelsec__triggers { display: none; }
.js .wheelsec__triggers { display: block; }
.wtrigger { height: 48vh; }

.wstack > .wstep + .wstep { margin-top: clamp(2rem, 4vw, 3rem); }
.js .wstack { display: grid; }
.js .wstack > .wstep { grid-area: 1 / 1; margin-top: 0; }

.wstep {
  padding-left: clamp(1.25rem, 2.5vw, 2rem);
  border-left: 2px solid var(--nc);
}
.wstep__no {
  display: block;
  font-size: var(--t-label);
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--nc);
  margin-bottom: .7rem;
}
.wstep h3 {
  font-size: clamp(1.4rem, 2.4vw, 2rem);
  margin-bottom: .8rem;
}
.wstep p {
  font-size: var(--t-lead);
  line-height: 1.55;
  color: var(--ink-70);
  max-width: 42ch;
}

.wstep[data-step="0"] { --nc: var(--s1); }
.wstep[data-step="1"] { --nc: var(--s2); }
.wstep[data-step="2"] { --nc: var(--s3); }
.wstep[data-step="3"] { --nc: var(--s4); }
.wstep[data-step="4"] { --nc: var(--s5); }

/* Ohne JavaScript stehen alle Karten untereinander und sind lesbar */
.js .wstack > .wstep {
  opacity: 0;
  transform: translateY(14px);
  pointer-events: none;
  /* Eigene Kurve: --ease laeuft vorne zu steil an, der Text schnellt sonst
     herein. cubic-bezier(.4,0,.2,1) setzt weich an und laeuft weich aus. */
  transition: opacity .5s cubic-bezier(.4, 0, .2, 1),
              transform .5s cubic-bezier(.4, 0, .2, 1);
}
.js .wstack > .wstep.is-active {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}
.js .wstack > .wstep.is-prev {         /* faehrt nach oben hinaus */
  opacity: 0;
  transform: translateY(-14px);
}

/* Vorteils-Karten --------------------------------------------------------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.card {
  background: var(--paper);
  padding: clamp(1.75rem, 3vw, 2.6rem);
  display: flex;
  flex-direction: column;
  gap: .7rem;
  transition: background .3s var(--ease), color .3s var(--ease);
}
.card--dark { background: var(--navy); color: #fff; }
.card__no {
  font-size: var(--t-label);
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--ink-50);
}
.card--dark .card__no { color: rgba(255, 255, 255, .5); }
.card h3 { margin: 0; }
.card__tagline {
  font-size: var(--t-small);
  font-weight: 500;
  color: var(--blue);
  margin: 0;
}
.card--dark .card__tagline { color: var(--mist); }
.card p.card__text {
  font-size: var(--t-small);
  color: var(--ink-70);
  line-height: 1.55;
  margin: 0;
}
.card--dark p.card__text { color: rgba(255, 255, 255, .72); }

/* Merkmalsliste (Modell-Vorteile) ---------------------------------------- */
.checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.checklist li {
  background: var(--paper);
  padding: 1.4rem 1.6rem;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .9rem;
  align-items: start;
  font-size: var(--t-small);
  line-height: 1.5;
}
.section--cream .checklist li { background: var(--cream); }
.checklist svg { flex: none; margin-top: 3px; color: var(--s4); }

/* Sortiment --------------------------------------------------------------- */
.assortment { border-top: 1px solid var(--line); }
.assortment__row {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: clamp(1rem, 4vw, 3rem);
  padding-block: clamp(1.75rem, 3.2vw, 2.6rem);
  border-bottom: 1px solid var(--line);
  align-items: start;
}
.assortment__row:nth-child(1) { --sc: var(--s1); }
.assortment__row:nth-child(2) { --sc: var(--s2); }
.assortment__row:nth-child(3) { --sc: var(--s3); }
.assortment__row:nth-child(4) { --sc: var(--s4); }
.assortment__row:nth-child(5) { --sc: var(--s5); }
.assortment__title {
  display: flex;
  align-items: baseline;
  gap: .85rem;
}
.assortment__title span {
  width: 9px; height: 9px;
  flex: none;
  border-radius: 50%;
  background: var(--sc);
  transform: translateY(-2px);
}
.tags { display: flex; flex-wrap: wrap; gap: .5rem; }
.tag {
  font-size: .8125rem;
  padding: .42rem .8rem;
  border: 1px solid var(--line);
  border-radius: 100px;
  color: var(--ink-70);
  background: var(--paper);
  transition: border-color .25s var(--ease), color .25s var(--ease);
}
.tag:hover { border-color: var(--sc); color: var(--navy); }

/* Referenzen -------------------------------------------------------------- */
.refs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.ref {
  background: var(--paper);
  padding: clamp(2rem, 3.5vw, 3rem);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-height: 230px;
}
.ref__logo {
  width: auto;
  max-width: 180px;
  height: 58px;
  object-fit: contain;
  object-position: left center;
}
.ref__meta {
  font-size: var(--t-label);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-50);
}
.ref p { font-size: var(--t-small); color: var(--ink-70); line-height: 1.55; margin-top: auto; }

.reflogos {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: clamp(2rem, 6vw, 5rem);
}
.reflogos img {
  width: auto;
  max-width: 170px;
  height: 54px;
  object-fit: contain;
  opacity: .78;
  transition: opacity .3s var(--ease);
}
.reflogos img:hover { opacity: 1; }

/* CTA-Band ---------------------------------------------------------------- */
.cta-band {
  background: var(--navy);
  color: #fff;
  padding-block: clamp(3.5rem, 6vw, 5.5rem);
}
.cta-band__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.cta-band h2 { max-width: 20ch; }
.cta-band p { color: rgba(255, 255, 255, .72); margin-top: .9rem; max-width: 46ch; }

/* Kontaktangaben ---------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}
.contact-facts { list-style: none; margin: 0; padding: 0; }
.contact-facts li {
  padding: 1.15rem 0;
  border-top: 1px solid var(--line);
}
.contact-facts li:last-child { border-bottom: 1px solid var(--line); }
.contact-facts dt, .contact-facts .k {
  display: block;
  font-size: var(--t-label);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-50);
  margin-bottom: .3rem;
}
.contact-facts .v { font-size: 1.0625rem; font-weight: 500; line-height: 1.45; }
.contact-facts a:hover { color: var(--blue); }

/* 08 — FORMULAR =========================================================== */

.form { display: grid; gap: 1.15rem; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.15rem; }

.field { display: grid; gap: .45rem; }
.field label {
  font-size: var(--t-label);
  letter-spacing: .14em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--ink-50);
}
.field input,
.field textarea {
  font: inherit;
  font-size: var(--t-small);
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: .85rem 1rem;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
  width: 100%;
}
.field textarea { resize: vertical; min-height: 150px; line-height: 1.55; }
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(31, 78, 121, .12);
}
.field input:user-invalid,
.field textarea:user-invalid { border-color: var(--magenta); }

.form__note { font-size: .8125rem; color: var(--ink-50); }
.form__status {
  font-size: var(--t-small);
  padding: .9rem 1.1rem;
  border-left: 3px solid var(--s4);
  background: var(--cream);
  display: none;
}
.form__status.is-visible { display: block; }
.form__status.is-error { border-left-color: var(--magenta); }

/* Honeypot */
.hp { position: absolute; left: -9999px; opacity: 0; height: 0; }

/* 09 — FOOTER ============================================================= */

.site-footer { background: var(--navy-900); color: #fff; }
.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem 3rem;
  justify-content: space-between;
  align-items: flex-start;
  padding-block: clamp(3rem, 5vw, 4.5rem);
}
.site-footer__brand { display: flex; align-items: center; gap: .9rem; margin-bottom: 1.4rem; }
.site-footer__brand svg { width: 42px; height: 42px; }
.site-footer__brand b { font-size: 1.05rem; font-weight: 600; letter-spacing: -.005em; word-spacing: .12em; }

.site-footer address {
  font-style: normal;
  font-size: var(--t-small);
  line-height: 1.75;
  color: rgba(255, 255, 255, .7);
}
.site-footer address a:hover { color: #fff; }

.footer-nav { list-style: none; margin: 0; padding: 0; display: grid; gap: .6rem; }
.footer-nav a {
  font-size: var(--t-small);
  color: rgba(255, 255, 255, .7);
  transition: color .2s var(--ease);
}
.footer-nav a:hover { color: #fff; }
.footer-col h4 {
  font-size: var(--t-label);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .45);
  margin-bottom: 1.1rem;
  font-weight: 600;
}

.site-footer__legal {
  border-top: 1px solid var(--line-dark);
  padding-block: 1.35rem;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.5rem;
  justify-content: space-between;
  font-size: .8125rem;
  color: rgba(255, 255, 255, .5);
}

/* CMYK-Balken — Vorgabe CI */
.cmyk-bar { display: flex; height: 8px; }
.cmyk-bar i { flex: 1; }
.cmyk-bar i:nth-child(1) { background: var(--cyan); }
.cmyk-bar i:nth-child(2) { background: var(--magenta); }
.cmyk-bar i:nth-child(3) { background: var(--yellow); }
.cmyk-bar i:nth-child(4) { background: var(--navy); }

/* Rechtstexte ------------------------------------------------------------- */
.legal h2 { font-size: 1.4rem; margin: 2.5rem 0 .8rem; }
.legal h2:first-child { margin-top: 0; }
.legal p, .legal li { font-size: var(--t-small); color: var(--ink-70); line-height: 1.7; }
.legal ul { padding-left: 1.2rem; }

/* 10 — MOTION ============================================================= */

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
[data-reveal].is-in { opacity: 1; transform: none; }
[data-reveal-delay="1"] { transition-delay: .08s; }
[data-reveal-delay="2"] { transition-delay: .16s; }
[data-reveal-delay="3"] { transition-delay: .24s; }
[data-reveal-delay="4"] { transition-delay: .32s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .keypoint::before { transform: scaleX(1); }
  .wheel__ring, .wheel__upright { rotate: none !important; scale: none !important; }
  .js .wstack > .wstep { transform: none; }
}

/* 11 — RESPONSIVE ========================================================= */

@media (max-width: 1080px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .refs  { grid-template-columns: 1fr; }
  .process { grid-template-columns: repeat(2, 1fr); row-gap: 2.25rem; }
  .step::before { right: 0; }
}

@media (max-width: 900px) {
  .nav__links,
  .nav__cta { display: none; }
  .nav__burger { display: block; }

  .nav.is-open ~ .nav-panel { display: block; }

  .editorial,
  .contact-grid { grid-template-columns: 1fr; }

  .wheelsec__layout { grid-template-columns: 1fr; gap: 0; }
  .wheelsec__stage {
    position: sticky;
    top: 66px;
    z-index: 2;
    margin-inline: calc(-1 * var(--gutter));
    padding: .9rem var(--gutter) 1rem;
    /* deckend, mit weichem Auslauf nach unten — sonst schimmert der Text durch */
    background: var(--cream);
    box-shadow: 0 16px 14px -10px var(--cream);
  }
  .wheelsec__sticky { position: static; }
  .wheel { max-width: 190px; }
  .wheel__num { display: none; }   /* in dieser Groesse nicht mehr lesbar */
  .wheelsec__panel { top: calc(66px + 270px); }
  .wtrigger { height: 42vh; }
  .editorial__aside { position: static; }

  .keypoints__grid { grid-template-columns: repeat(2, 1fr); }
  .keypoint:nth-child(3) { border-left: 0; }
  .keypoint:nth-child(n+3) { border-top: 1px solid var(--line); }

  .assortment__row { grid-template-columns: 1fr; gap: 1rem; }
  .checklist { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  html { scroll-padding-top: 74px; }
  .nav { height: 66px; }
  .hero { min-height: auto; padding-top: 120px; }
  .cards { grid-template-columns: 1fr; }
  .process { grid-template-columns: 1fr; }
  .keypoints__grid { grid-template-columns: 1fr; }
  .keypoint { border-left: 0; }
  .keypoint + .keypoint { border-top: 1px solid var(--line); }
  .form__row { grid-template-columns: 1fr; }
  .control-strip { width: 5px; }
}

/* Mobile-Panel ------------------------------------------------------------ */
.nav-panel {
  display: none;
  position: fixed;
  inset: 66px 0 0 0;
  z-index: 99;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--navy-900);
  border-top: 1px solid var(--line-dark);
  padding: 1.25rem var(--gutter) 2rem;
}
.nav-panel.is-open { display: block; }
.nav-panel ul { list-style: none; margin: 0 0 1.5rem; padding: 0; display: grid; }
.nav-panel ul a {
  display: block;
  padding: .95rem 0;
  border-bottom: 1px solid var(--line-dark);
  color: rgba(255, 255, 255, .85);
  font-size: 1.05rem;
  font-weight: 500;
}
.nav-panel ul a[aria-current="page"] { color: #fff; }
.nav-panel .btn { width: 100%; justify-content: center; }

@media (min-width: 901px) {
  .nav-panel { display: none !important; }
}

/* Druck-Ausgabe ----------------------------------------------------------- */
@media print {
  .site-header, .nav-panel, .cta-band, .control-strip { display: none; }
  body { color: #000; }
  .section { padding-block: 1.5rem; }
  .js .wstack > .wstep { opacity: 1; transform: none; }
  .wstack { display: block; }
  .wheelsec__sticky, .wheelsec__panel { position: static; }
  .wheelsec__triggers { display: none; }
}

/* Bildmarke ---------------------------------------------------------------
   Invertierte Variante: Ring in den Prozessfarben, Schriftzug weiss,
   Scheibe transparent — damit die Marke auf dunklem Grund sauber steht. */
.kfd-mark { width: 100%; height: auto; color: #fff; }
.kfd-mark__disc { fill: transparent; }
.nav__logo svg, .site-footer__brand svg { width: 100%; height: auto; }
.site-footer__brand svg { width: 42px; }