/* ==========================================================================
   home.css — Startseite. Wird nur von index.php über $page['styles'] geladen.

   Ein einziger inszenierter Moment: das Konturfeld im Einstieg
   (js/hero-field.js) mit der Systemkarte davor. Alles darunter bleibt
   ruhig und redaktionell — Bewegung nur dort, wo sie etwas erklärt
   (Laufband, Lesefortschritt der Kernaussage, Delivery-Schiene).
   ========================================================================== */

@layer pages {

  /* --- Einstieg ------------------------------------------------------- */

  .hero {
    position: relative;
    isolation: isolate;
    display: grid;
    align-content: space-between;
    min-block-size: calc(100svh - var(--header-h));
    padding-block: clamp(2.5rem, 1rem + 5vw, 6rem) var(--space-md);
    overflow: hidden;
  }

  /* Ersatzfläche, solange (oder falls) kein WebGL läuft: derselbe
     Kupfer-/Signalschein, den das Feld zeichnet, nur ohne Linien. */
  .hero::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -2;
    background:
      radial-gradient(70rem 40rem at 85% 30%, var(--glow-accent), transparent 60%),
      radial-gradient(50rem 30rem at 70% 90%, var(--glow-signal), transparent 60%);
  }

  /* Übergang nach unten, damit das Feld nicht an einer Kante abreisst. */
  .hero::after {
    content: "";
    position: absolute;
    inset: auto 0 0;
    z-index: -1;
    block-size: 30%;
    background: linear-gradient(transparent, var(--paper));
    pointer-events: none;
  }

  .hero__field {
    position: absolute;
    inset: 0;
    z-index: -1;
    inline-size: 100%;
    block-size: 100%;
    opacity: 0;
    transition: opacity 1.6s var(--ease);
  }

  .hero__field.is-live { opacity: 1; }

  .hero__inner {
    display: grid;
    gap: var(--space-xl);
    align-items: center;
  }

  .hero__text {
    display: grid;
    gap: var(--space-md);
    justify-items: start;
  }

  .hero__title {
    font-family: var(--font-serif);
    font-size: var(--text-display);
    line-height: .98;
    letter-spacing: -.025em;
  }

  .hero__line { display: block; overflow: hidden; padding-block-end: .08em; }
  .hero__line > * { display: inline-block; }

  .hero__title em { color: var(--accent); }

  .hero__lead {
    max-inline-size: 50ch;
    font-size: var(--text-lead);
    color: var(--ink-soft);
  }

  .hero__actions { margin-block-start: var(--space-2xs); gap: var(--space-xs); }

  /* Konsole: die Systemkarte in einem ruhigen Glasrahmen. Die Unschärfe
     hat hier eine Aufgabe — das Konturfeld läuft sichtbar hinter der
     Karte weiter, ohne ihre Linien zu stören. */
  .console {
    border: 1px solid color-mix(in srgb, var(--ink) 12%, transparent);
    border-radius: var(--radius-xl);
    background: color-mix(in srgb, var(--surface) 62%, transparent);
    -webkit-backdrop-filter: blur(14px) saturate(1.2);
    backdrop-filter: blur(14px) saturate(1.2);
    box-shadow: 0 30px 80px -30px rgb(0 0 0 / .45);
    overflow: hidden;
  }

  .console__bar {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: .7rem var(--space-md);
    border-block-end: 1px solid var(--line);
    font-family: var(--font-mono);
    font-size: var(--text-xxs);
    letter-spacing: var(--track-mono);
    text-transform: uppercase;
    color: var(--muted);
  }

  .console__dots { display: inline-flex; gap: .35rem; }

  .console__dots i {
    inline-size: .5rem;
    block-size: .5rem;
    border-radius: 50%;
    background: var(--line-strong);
  }

  .console .schematic {
    max-inline-size: none;
    padding: var(--space-lg) var(--space-md) var(--space-md);
  }

  /* Leiste am Fuss des Einstiegs. */
  .hero__rail {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-md);
    margin-block-start: var(--space-2xl);
    padding-block-start: var(--space-sm);
    border-block-start: 1px solid var(--line);
  }

  .hero__rail div { display: grid; gap: .15rem; }

  .hero__rail dt {
    font-family: var(--font-mono);
    font-size: var(--text-xxs);
    letter-spacing: var(--track-mono);
    text-transform: uppercase;
    color: var(--muted);
  }

  .hero__rail dd {
    font-size: var(--text-sm);
    color: var(--ink-soft);
    font-variant-numeric: tabular-nums;
  }

  @media (width >= 64rem) {
    .hero__inner {
      grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
      column-gap: var(--space-2xl);
    }
  }

  @media (width < 40rem) {
    .hero__rail { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .console .schematic { padding: var(--space-md) var(--space-sm) var(--space-sm); }
  }

  /* Auftritt beim Laden: Zeilen steigen aus ihrer Maske, der Rest folgt.
     Ausgangszustand ist sichtbar — die Animation startet vom Endbild aus
     rückwärts gedacht und fällt bei reduzierter Bewegung einfach weg. */
  @media (prefers-reduced-motion: no-preference) {
    .hero__line > * {
      animation: hero-rise var(--dur-reveal) var(--ease-expo) both;
    }

    .hero__line:nth-child(2) > * { animation-delay: 90ms; }

    .hero__lead,
    .hero__actions,
    .hero__console,
    .hero__rail {
      animation: hero-fade 900ms var(--ease-expo) both;
    }

    .hero__lead    { animation-delay: 260ms; }
    .hero__actions { animation-delay: 360ms; }
    .hero__console { animation-delay: 200ms; }
    .hero__rail    { animation-delay: 520ms; }
  }

  @keyframes hero-rise {
    from { translate: 0 105%; }
  }

  @keyframes hero-fade {
    from { opacity: 0; translate: 0 1rem; filter: blur(6px); }
  }

  /* --- Werkzeug-Laufband ------------------------------------------------ */

  .stack-band {
    padding-block: var(--space-lg);
    border-block: 1px solid var(--line);
    background: var(--surface-sunk);
    overflow: hidden;
  }

  .stack-band__head {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: baseline;
    gap: var(--space-sm);
    margin-block-end: var(--space-md);
  }

  .stack-band__title {
    font-family: var(--font-mono);
    font-size: var(--text-mono);
    font-weight: 500;
    letter-spacing: var(--track-mono);
    text-transform: uppercase;
    color: var(--muted);
  }

  .stack-band__link {
    font-size: var(--text-sm);
    color: var(--ink-soft);
  }

  .stack-band__rows { display: grid; gap: var(--space-xs); }

  .marquee {
    display: flex;
    gap: var(--space-xs);
    mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  }

  .marquee__track {
    display: flex;
    flex: none;
    gap: var(--space-xs);
  }

  .marquee__item {
    padding: .55rem 1.1rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-pill);
    background: var(--surface);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--ink-soft);
    white-space: nowrap;
  }

  @media (prefers-reduced-motion: no-preference) {
    .marquee__track { animation: marquee 60s linear infinite; }
    .marquee--reverse .marquee__track { animation-direction: reverse; }
    .marquee:hover .marquee__track { animation-play-state: paused; }
  }

  /* Ohne Bewegung: eine ruhige, umbrechende Liste ohne Duplikat. */
  @media (prefers-reduced-motion: reduce) {
    .marquee { flex-wrap: wrap; mask-image: none; padding-inline: var(--gutter); }
    .marquee__track { flex-wrap: wrap; }
    .marquee__track[aria-hidden="true"] { display: none; }
  }

  @keyframes marquee {
    to { translate: calc(-100% - var(--space-xs)) 0; }
  }

  /* --- Kernaussage -------------------------------------------------------- */

  .statement__text {
    max-inline-size: 22ch;
    font-size: clamp(2.4rem, 1.2rem + 4.4vw, 5.25rem);
    line-height: 1.02;
    letter-spacing: -.022em;
  }

  /* js/home-motion.js zerlegt die Aussage in Wörter und hellt sie mit dem
     Scrollfortschritt auf. Ohne Skript steht der Satz voll da. */
  .scroll-lit__word {
    color: color-mix(in srgb, var(--ink) 22%, transparent);
    transition: color 240ms var(--ease);
  }

  .scroll-lit__word.is-lit { color: var(--ink); }

  .statement__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: var(--space-xl);
    margin-block-start: var(--space-xl);
    align-items: start;
  }

  .statement__body {
    display: grid;
    gap: var(--space-sm);
    max-inline-size: 58ch;
    color: var(--muted);
    font-size: var(--text-lead);
  }

  .statement__body .link-arrow { justify-self: start; }

  .ledger { display: grid; }

  .ledger__row {
    display: grid;
    grid-template-columns: 6.5rem minmax(0, 1fr);
    align-items: baseline;
    gap: var(--space-md);
    padding-block: var(--space-sm);
    border-block-start: 1px solid var(--line);
  }

  .ledger__row:last-child { border-block-end: 1px solid var(--line); }

  .ledger__value {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 1.6rem + 1.4vw, 2.75rem);
    line-height: 1;
    color: var(--accent);
    font-variant-numeric: tabular-nums;
  }

  .ledger__label { color: var(--ink-soft); }

  @media (width < 56rem) {
    .statement__grid { grid-template-columns: 1fr; gap: var(--space-lg); }
  }

  /* --- Abschnittsköpfe ---------------------------------------------------- */

  .home-head {
    display: grid;
    gap: var(--space-sm);
    max-inline-size: 48rem;
    margin-block-end: var(--space-xl);
  }

  .home-head__sub { max-inline-size: 56ch; color: var(--muted); font-size: var(--text-lead); }

  .home-head__foot { margin-block-start: var(--space-md); }

  /* --- Delivery-Modell ------------------------------------------------------ */

  .delivery {
    border-block: 1px solid var(--line);
    background: var(--surface-sunk);
  }

  .delivery__grid {
    display: grid;
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: var(--space-2xl);
    align-items: start;
  }

  .delivery__head {
    position: sticky;
    inset-block-start: calc(var(--header-h) + var(--space-xl));
    display: grid;
    gap: var(--space-md);
  }

  .delivery__head p { max-inline-size: 48ch; color: var(--muted); font-size: var(--text-lead); }

  /* Die Schiene: eine Haarlinie, die sich mit dem Scrollen füllt. */
  .enterprise-process {
    position: relative;
    display: grid;
    gap: var(--space-xl);
    padding-inline-start: var(--space-xl);
  }

  .enterprise-process::before,
  .enterprise-process::after {
    content: "";
    position: absolute;
    inset-block: .5rem;
    inset-inline-start: .45rem;
    inline-size: 1px;
    background: var(--line-strong);
  }

  .enterprise-process::after {
    inline-size: 2px;
    inset-inline-start: calc(.45rem - .5px);
    background: linear-gradient(var(--accent), var(--signal));
    transform-origin: top;
    scale: 1 0;
  }

  @supports (animation-timeline: view()) {
    .enterprise-process {
      view-timeline-name: --process;
    }

    .enterprise-process::after {
      animation: process-fill linear both;
      animation-timeline: --process;
      animation-range: entry 40% cover 70%;
    }
  }

  @supports not (animation-timeline: view()) {
    .enterprise-process::after { scale: 1 1; }
  }

  @keyframes process-fill { to { scale: 1 1; } }

  .enterprise-process__stage {
    position: relative;
    display: grid;
    gap: var(--space-2xs);
  }

  .enterprise-process__marker {
    position: absolute;
    inset-inline-start: calc(var(--space-xl) * -1);
    inset-block-start: .35rem;
    display: grid;
    place-items: center;
    inline-size: 1rem;
    block-size: 1rem;
    border-radius: 50%;
    background: var(--paper);
    border: 1px solid var(--accent);
  }

  .enterprise-process__marker span {
    position: absolute;
    inset-inline-start: 1.6rem;
    font-family: var(--font-mono);
    font-size: var(--text-xxs);
    color: var(--muted);
    visibility: hidden;
  }

  .enterprise-process__content { display: grid; gap: var(--space-2xs); }

  .enterprise-process__content h3 {
    font-family: var(--font-serif);
    font-weight: 400;
    font-size: clamp(1.75rem, 1.3rem + 1.4vw, 2.5rem);
    line-height: 1;
    letter-spacing: -.015em;
  }

  .enterprise-process__content p { max-inline-size: 46ch; color: var(--muted); }

  .enterprise-process__deliverable {
    justify-self: start;
    margin-block-start: var(--space-2xs);
    padding: .35rem .8rem;
    border: 1px solid var(--signal-edge);
    border-radius: var(--radius-pill);
    background: var(--signal-wash);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--signal);
  }

  @media (width < 56rem) {
    .delivery__grid { grid-template-columns: 1fr; gap: var(--space-xl); }
    .delivery__head { position: static; }
  }

  /* --- Grundsätze ------------------------------------------------------------ */

  .principles-band__grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-lg);
  }

  .principles-band__item {
    display: grid;
    gap: var(--space-2xs);
    align-content: start;
    padding-block-start: var(--space-md);
    border-block-start: 1px solid var(--line-strong);
  }

  .principles-band__item h3 { font-size: var(--text-body); }
  .principles-band__item p { color: var(--muted); }

  @media (width < 56rem) {
    .principles-band__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  }

  @media (width < 34rem) {
    .principles-band__grid { grid-template-columns: 1fr; }
  }

  /* --- Abschluss --------------------------------------------------------------- */

  .closing {
    position: relative;
    isolation: isolate;
    padding-block: var(--space-3xl);
    border-block-start: 1px solid var(--line);
    overflow: hidden;
  }

  .closing::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background:
      radial-gradient(50rem 26rem at 50% 115%, var(--glow-accent), transparent 70%),
      radial-gradient(30rem 20rem at 10% 0%, var(--glow-signal), transparent 70%);
  }

  .closing__inner {
    display: grid;
    gap: var(--space-md);
    justify-items: center;
    text-align: center;
  }

  .closing__title {
    max-inline-size: 18ch;
    font-size: clamp(2.5rem, 1.1rem + 5vw, 5.5rem);
    line-height: 1;
    letter-spacing: -.022em;
  }

  .closing__text { max-inline-size: 52ch; color: var(--muted); font-size: var(--text-lead); }

  .closing .btn-row { justify-content: center; gap: var(--space-xs); }

  .closing__note {
    font-family: var(--font-mono);
    font-size: var(--text-mono);
    color: var(--muted);
  }
}