/* =========================================================================
   JAACON — Scrollytelling-Landingpage
   Monochrom. Ein einziger Akzent: kaltes Weiß-Glühen für CTA und
   interaktive Elemente. Keine zweite Farbe.
   ========================================================================= */

:root {
  --bg: #000000;
  --surface: #08080a;
  --ink: #f2f2f3;
  --ink-dim: #b6b6bb;
  --muted: #7d7d84;
  --line: rgba(255, 255, 255, 0.14);
  --line-strong: rgba(255, 255, 255, 0.32);

  /* Der Akzent: kaltes Weiß-Glühen, abgeleitet vom Knotensymbol. */
  --glow: rgba(255, 255, 255, 0.55);
  --glow-soft: rgba(255, 255, 255, 0.16);

  --font: "Helvetica Neue", "Inter", system-ui, -apple-system, "Segoe UI",
    Arial, sans-serif;
  --container: 1280px;
  --header-h: 76px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
  background: var(--bg);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-weight: 300;
  font-size: 17px;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
}

::selection {
  background: rgba(255, 255, 255, 0.85);
  color: #000;
}

:focus-visible {
  outline: 1px solid var(--glow);
  outline-offset: 4px;
}

.container {
  width: min(100% - 9vw, var(--container));
  margin-inline: auto;
}

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

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

.kicker,
.label,
.eyebrow {
  font-size: clamp(0.62rem, 0.9vw, 0.74rem);
  font-weight: 400;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 1.6rem;
}

.display {
  font-weight: 200;
  text-transform: uppercase;
  letter-spacing: 0.055em;
  line-height: 1.08;
  margin: 0;
  text-wrap: balance;
}

.display--xl {
  font-size: clamp(2.1rem, 6.4vw, 5.4rem);
}

.display--l {
  font-size: clamp(1.7rem, 4.4vw, 3.4rem);
}

.display--m {
  font-size: clamp(1.35rem, 2.9vw, 2.2rem);
  letter-spacing: 0.08em;
}

.statement {
  font-weight: 200;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  line-height: 1.2;
  font-size: clamp(1.5rem, 3.6vw, 3rem);
  color: var(--ink-dim);
  margin: 0;
  max-width: 22ch;
}

.lede {
  font-size: clamp(1rem, 1.35vw, 1.16rem);
  color: var(--ink-dim);
  max-width: 46ch;
  margin: 1.8rem 0 0;
  font-weight: 300;
}

.note {
  font-size: 0.86rem;
  color: var(--muted);
  letter-spacing: 0.02em;
}

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

.btn {
  --btn-border: var(--line-strong);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 1em;
  padding: 1.15em 2.5em;
  border: 1px solid var(--btn-border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.015);
  color: var(--ink);
  font-family: inherit;
  font-size: clamp(0.68rem, 0.95vw, 0.78rem);
  font-weight: 400;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: border-color 0.5s var(--ease), background-color 0.5s var(--ease),
    box-shadow 0.6s var(--ease), transform 0.5s var(--ease);
}

.btn::after {
  content: "";
  position: absolute;
  inset: -40%;
  border-radius: inherit;
  background: radial-gradient(closest-side, var(--glow-soft), transparent 70%);
  opacity: 0;
  transition: opacity 0.6s var(--ease);
  pointer-events: none;
}

.btn:hover,
.btn:focus-visible {
  border-color: rgba(255, 255, 255, 0.75);
  background: rgba(255, 255, 255, 0.05);
  box-shadow: 0 0 40px -8px var(--glow);
  transform: translateY(-1px);
}

.btn:hover::after,
.btn:focus-visible::after {
  opacity: 1;
}

.btn__dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 12px 2px var(--glow);
  flex: none;
}

.btn--ghost {
  padding: 0.85em 1.7em;
  letter-spacing: 0.2em;
  border-color: var(--line);
}

/* ----------------------------------------------------------------- Header */

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 60;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.82) 0%,
    rgba(0, 0, 0, 0.45) 60%,
    rgba(0, 0, 0, 0) 100%
  );
  pointer-events: none;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  pointer-events: auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand img {
  height: 17px;
  width: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1.2rem, 3vw, 2.6rem);
}

.site-nav a {
  font-size: 0.68rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink-dim);
  transition: color 0.4s var(--ease);
}

.site-nav a:hover {
  color: #fff;
}

/* "Kontakt" ist die Abkürzung vorbei an elf Bildschirmhöhen Geschichte und
   muss deshalb deutlich lesbarer sein als die übrigen Navigationslinks. */
.site-nav__skip {
  position: relative;
  color: var(--ink);
  padding-bottom: 0.35em;
}

.site-nav__skip::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--line-strong);
  transition: background-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.site-nav__skip:hover::after,
.site-nav__skip:focus-visible::after {
  background: #fff;
  box-shadow: 0 0 12px 0 var(--glow);
}

@media (max-width: 767px) {
  /* "Ablauf" weicht, "Kontakt" bleibt — die Abkürzung wird mobil eher
     gebraucht, nicht weniger. */
  .site-nav a:not(.btn):not(.site-nav__skip) {
    display: none;
  }

  .site-nav {
    gap: 1.1rem;
  }

  .site-nav__skip {
    font-size: 0.62rem;
    letter-spacing: 0.18em;
  }
}

/* ------------------------------------------------------------------ Rooms */

.room {
  position: relative;
  height: calc(var(--room-vh, 300) * 1vh);
}

.room__viewport {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100svh;
  overflow: hidden;
  background: #000;
}

.room__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  background: #000;
}

/* Lesbarkeit: weicher Verlauf dort, wo Text liegt. Bewusst kräftig und hoch —
   im Abschlusskapitel lief sonst eine Speiche des Knotens mitten durch die
   Headline. Die Grafik darf die Typografie nirgends berühren. */
.room__viewport::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.96) 0%,
    rgba(0, 0, 0, 0.88) 26%,
    rgba(0, 0, 0, 0.6) 44%,
    rgba(0, 0, 0, 0) 72%
  );
}

/* Kapitel mit Text auf der linken Seite brauchen ein kräftigeres Scrim:
   Linien, die aus der Bildmitte nach links laufen, dürfen die Typografie
   nicht kreuzen. */
.room--left .room__viewport::after {
  background:
    linear-gradient(
      to top,
      rgba(0, 0, 0, 0.82) 0%,
      rgba(0, 0, 0, 0.35) 30%,
      rgba(0, 0, 0, 0) 58%
    ),
    linear-gradient(
      to right,
      rgba(0, 0, 0, 0.9) 0%,
      rgba(0, 0, 0, 0.74) 24%,
      rgba(0, 0, 0, 0.4) 44%,
      rgba(0, 0, 0, 0) 68%
    );
}

@media (max-width: 767px) {
  /* Hochformat: der Text liegt unten, nicht links. */
  .room--left .room__viewport::after {
    background: linear-gradient(
      to top,
      rgba(0, 0, 0, 0.92) 0%,
      rgba(0, 0, 0, 0.6) 34%,
      rgba(0, 0, 0, 0) 66%
    );
  }
}

.room__overlay {
  position: absolute;
  inset: 0;
  display: grid;
  padding-top: var(--header-h);
  padding-bottom: 9vh;
  z-index: 2;
}

.room--bottom .room__overlay {
  align-items: end;
}

.room--middle .room__overlay {
  align-items: center;
}

.beats {
  display: grid;
  width: 100%;
}

/* Alle Beats teilen sich dieselbe Rasterzelle. Bei Kapiteln mit Text unten
   sollen sie an derselben Grundlinie erscheinen — sonst springt der Kicker
   in die Bildmitte, weil die Headline die Zelle höher macht. */
.room--bottom .beats {
  align-items: end;
}

.beat {
  grid-area: 1 / 1;
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
  will-change: opacity, transform;
}

.beat.is-visible {
  opacity: 1;
  transform: none;
}

.beat--narrow {
  max-width: 40ch;
}

.beat--center {
  text-align: center;
  justify-self: center;
  max-width: 34ch;
}

/* Scroll-Hinweis im Hero */
.scroll-cue {
  position: absolute;
  left: 50%;
  bottom: 3.2vh;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9rem;
  font-size: 0.6rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--muted);
  z-index: 3;
  transition: opacity 0.6s var(--ease);
}

/* Ein Lichtpunkt läuft die Linie hinunter — dasselbe Motiv wie der Knoten,
   nur als Hinweis. Kein Hüpfen: die Seite ist sonst überall ruhig, ein
   springendes Element würde herausfallen. */
.scroll-cue__line {
  position: relative;
  width: 1px;
  height: 52px;
  background: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.5),
    rgba(255, 255, 255, 0.12) 60%,
    transparent
  );
}

.scroll-cue__line::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  width: 4px;
  height: 4px;
  margin-left: -2px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 10px 2px var(--glow);
  animation: cue-travel 2.6s cubic-bezier(0.45, 0, 0.55, 1) infinite;
}

@keyframes cue-travel {
  0% {
    transform: translateY(-6px);
    opacity: 0;
  }
  18% {
    opacity: 1;
  }
  72% {
    opacity: 1;
  }
  100% {
    transform: translateY(52px);
    opacity: 0;
  }
}

/* Das Wort atmet leise mit, damit der Blick es findet. */
.scroll-cue span:last-child,
.scroll-cue {
  animation: cue-breathe 2.6s ease-in-out infinite;
}

.scroll-cue__line {
  animation: none;
}

@keyframes cue-breathe {
  0%,
  100% {
    transform: translate(-50%, 0);
    opacity: 0.7;
  }
  50% {
    transform: translate(-50%, 4px);
    opacity: 1;
  }
}

/* Kapitelmarke oben links, solange der Room gepinnt ist */
.room__label {
  position: absolute;
  top: calc(var(--header-h) + 2.2vh);
  left: 0;
  right: 0;
  z-index: 3;
}

.room__label span {
  font-size: 0.62rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--muted);
}

/* --------------------------------------------------------- Prozessschritt */

.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(1.2rem, 3vw, 2.8rem);
  align-items: start;
  max-width: 46ch;
}

.step__num {
  font-size: clamp(1.6rem, 3.4vw, 2.6rem);
  font-weight: 200;
  letter-spacing: 0.02em;
  color: #fff;
  line-height: 1;
  padding-top: 0.1em;
  position: relative;
}

.step__num::after {
  content: "";
  position: absolute;
  left: 50%;
  top: -0.9em;
  width: 4px;
  height: 4px;
  margin-left: -2px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 14px 3px var(--glow);
}

/* ---------------------------------------------------------------- Sektion */

.section {
  position: relative;
  padding: clamp(6rem, 16vh, 12rem) 0;
}

.section--cta {
  text-align: center;
  padding: clamp(8rem, 22vh, 16rem) 0;
  overflow: hidden;
}

/* Haltepunkt: Die Sektion ist höher als der Bildschirm, ihr Inhalt bleibt
   währenddessen stehen. --cta-progress läuft dabei von 0 auf 1 und lässt den
   Button aufleuchten. Gesetzt wird die Variable in src/js/main.js. */
#kontakt[data-cta-hold] {
  height: calc(var(--room-vh, 185) * 1vh);
  padding: 0;
  overflow: visible;
}

#kontakt[data-cta-hold] .cta-viewport {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100svh;
  display: grid;
  align-content: center;
  overflow: hidden;
}

#kontakt[data-cta-hold]::before {
  top: 50%;
}

/* Der Button leuchtet mit dem Fortschritt auf. */
.section--cta .btn {
  --p: var(--cta-progress, 0);
  border-color: rgba(255, 255, 255, calc(0.32 + var(--p) * 0.6));
  background: rgba(255, 255, 255, calc(0.015 + var(--p) * 0.05));
  box-shadow: 0 0 calc(var(--p) * 55px) calc(var(--p) * -6px) var(--glow);
}

.section--cta .btn::after {
  opacity: calc(var(--p) * 0.9);
}

.section--cta .btn .btn__dot {
  box-shadow: 0 0 calc(6px + var(--p) * 16px) calc(1px + var(--p) * 3px) var(--glow);
}

.cta-node {
  filter: drop-shadow(0 0 calc(14px + var(--cta-progress, 0) * 26px) var(--glow));
}

/* Der Halo des Knotens als wiederkehrendes Motiv hinter dem CTA. */
.section--cta::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 42%;
  width: min(120vw, 1100px);
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  background: radial-gradient(
    closest-side,
    rgba(255, 255, 255, 0.11),
    rgba(255, 255, 255, 0.03) 45%,
    transparent 72%
  );
  pointer-events: none;
}

.section--cta .container {
  position: relative;
  z-index: 1;
}

.cta-node {
  width: 44px;
  height: 44px;
  margin: 0 auto clamp(2rem, 5vh, 3.4rem);
  opacity: 0.95;
  filter: drop-shadow(0 0 22px var(--glow));
}

.cta-actions {
  margin-top: clamp(2.4rem, 6vh, 3.6rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.6rem;
}

.price-hint {
  margin: clamp(2rem, 5vh, 3rem) auto 0;
  max-width: 44ch;
  font-size: 0.92rem;
  color: var(--muted);
  letter-spacing: 0.03em;
}

.fallback-mail {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.fallback-mail a {
  color: var(--ink-dim);
  text-underline-offset: 4px;
}

/* -------------------------------------------------------------- Portfolio */
/*
   PORTFOLIO — vollständig gebaut, aber deaktiviert ausgeliefert.
   Aktivieren, sobald ein vorzeigbares Projekt existiert:
     1. in index.html bei <section id="portfolio"> das Attribut
        data-enabled="false" auf "true" setzen und hidden entfernen
     2. die Karten mit echten Projekten füllen (Bild, Name, Branche, Jahr)
     3. den Nav-Link "Arbeiten" im Header einkommentieren
   Styling und Grid stehen bereits und brauchen keine Änderung.
*/
[data-enabled="false"] {
  display: none !important;
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: clamp(1.4rem, 3vw, 2.6rem);
  margin-top: clamp(3rem, 8vh, 5rem);
}

.work-card {
  position: relative;
  display: block;
  text-decoration: none;
  border: 1px solid var(--line);
  background: var(--surface);
  overflow: hidden;
  transition: border-color 0.5s var(--ease), transform 0.6s var(--ease);
}

.work-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-3px);
}

.work-card__media {
  aspect-ratio: 4 / 3;
  background: #0d0d10;
  overflow: hidden;
}

.work-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.05);
  transition: transform 0.9s var(--ease);
}

.work-card:hover .work-card__media img {
  transform: scale(1.03);
}

.work-card__body {
  padding: 1.6rem 1.7rem 1.9rem;
}

.work-card__meta {
  display: flex;
  gap: 1.2rem;
  font-size: 0.62rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.9rem;
}

.work-card__title {
  font-size: 1.05rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0;
}

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

.site-footer {
  border-top: 1px solid var(--line);
  padding: clamp(3.5rem, 9vh, 6rem) 0 clamp(2.5rem, 5vh, 3.5rem);
  background: #000;
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  justify-content: space-between;
  align-items: flex-start;
}

.site-footer img {
  height: 15px;
  width: auto;
  opacity: 0.9;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 1.6rem;
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.footer-legal a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.4s var(--ease);
}

.footer-legal a:hover {
  color: var(--ink);
}

.footer-company {
  margin-top: 1.4rem;
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* -------------------------------------------------------------- Preloader */

.preloader {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  background: #000;
  transition: opacity 0.9s var(--ease), visibility 0.9s var(--ease);
}

.preloader__node {
  width: 30px;
  height: 30px;
  opacity: 0.9;
  animation: breathe 2.6s ease-in-out infinite;
}

@keyframes breathe {
  0%,
  100% {
    opacity: 0.25;
    filter: drop-shadow(0 0 4px transparent);
  }
  50% {
    opacity: 1;
    filter: drop-shadow(0 0 18px var(--glow));
  }
}

html.is-ready .preloader {
  opacity: 0;
  visibility: hidden;
}

html.no-js .preloader {
  display: none;
}

/* ---------------------------------------------------------------- Consent */

/* Das hidden-Attribut muss display:flex schlagen — sonst wäre das Banner
   trotz Deaktivierung sichtbar. */
.consent[hidden] {
  display: none;
}

.consent {
  position: fixed;
  left: 50%;
  bottom: 1.5rem;
  transform: translateX(-50%);
  z-index: 120;
  width: min(100% - 2rem, 640px);
  padding: 1.4rem 1.6rem;
  background: rgba(10, 10, 12, 0.96);
  border: 1px solid var(--line);
  border-radius: 4px;
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  align-items: center;
  justify-content: space-between;
}

.consent p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--ink-dim);
  max-width: 46ch;
}

.consent__actions {
  display: flex;
  gap: 0.8rem;
}

.consent button {
  font-family: inherit;
}

/* ------------------------------------------------- Fallbacks: no-js, RM */

html.no-js .beat,
html.reduced-motion .beat {
  opacity: 1;
  transform: none;
}

html.no-js .room,
html.reduced-motion .room {
  height: auto;
}

html.no-js .room__viewport,
html.reduced-motion .room__viewport {
  position: relative;
  height: auto;
  min-height: 100svh;
}

html.no-js .room__overlay,
html.reduced-motion .room__overlay {
  position: relative;
  padding-block: clamp(8rem, 20vh, 14rem);
  align-items: start;
}

html.no-js .beats,
html.reduced-motion .beats {
  display: block;
}

html.no-js .beat + .beat,
html.reduced-motion .beat + .beat {
  margin-top: clamp(3.5rem, 10vh, 7rem);
}

html.no-js .scroll-cue,
html.reduced-motion .scroll-cue {
  display: none;
}

/* Ohne Scroll-Steuerung kein Haltepunkt — die Sektion verhält sich normal
   und der Button steht gleich in voller Helligkeit da. */
html.no-js #kontakt[data-cta-hold],
html.reduced-motion #kontakt[data-cta-hold] {
  height: auto;
  padding: clamp(8rem, 22vh, 16rem) 0;
}

html.no-js #kontakt[data-cta-hold] .cta-viewport,
html.reduced-motion #kontakt[data-cta-hold] .cta-viewport {
  position: relative;
  height: auto;
  display: block;
}

html.no-js .section--cta,
html.reduced-motion .section--cta {
  --cta-progress: 1;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ------------------------------------------------------------ Mobile-Feinschliff */

@media (max-width: 767px) {
  body {
    font-size: 16px;
  }

  .room__overlay {
    padding-bottom: 12vh;
  }

  .display {
    letter-spacing: 0.04em;
  }

  .kicker,
  .label,
  .eyebrow {
    letter-spacing: 0.28em;
  }

  .btn {
    padding: 1.1em 2em;
    letter-spacing: 0.18em;
  }

  .step {
    grid-template-columns: 1fr;
    gap: 0.9rem;
  }

  .step__num::after {
    left: 0;
    margin-left: 0;
    top: -0.7em;
  }

  .footer-grid {
    gap: 2rem;
  }
}