/* ==========================================================================
   Felix Hacker — Stylesheet
   Dark Mode, grüner Akzent. Keine externen Ressourcen (System-Schriften).
   Optional eigene Schrift: .woff2 nach /assets/fonts/ legen und den
   @font-face-Block einkommentieren.
   ========================================================================== */

/*
@font-face {
  font-family: "Brand";
  src: url("../fonts/brand.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}
*/

:root {
  --black: #000000;
  --white: #ffffff;
  --text: #e9e9e9;
  --muted: #8f8f8f;        /* ≈ 6.3:1 auf Schwarz */
  --line: #1f1f1f;
  --line-strong: #333333;
  --green: #2fe07f;
  --green-dim: #1a7f49;
  --green-glow: rgba(47, 224, 127, 0.14);
  --error: #ff6b6b;

  --font: "Brand", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
          "Helvetica Neue", Arial, sans-serif;

  --gutter: clamp(1rem, 4vw, 3rem);
  --max: 80rem;
  --radius: 0.5rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  color-scheme: dark;
}

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

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

body {
  margin: 0;
  background: var(--black);
  color: var(--text);
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

canvas, svg { display: block; }

a { color: inherit; }

::selection { background: var(--green); color: var(--black); }

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

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -4rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--green);
  color: var(--black);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius);
}
.skip-link:focus { top: 1rem; }

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(0, 0, 0, 0.82);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4rem;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--white);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.wordmark__dot {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px var(--green-glow);
}

.nav {
  display: flex;
  gap: 0.25rem;
}

.nav a {
  position: relative;
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.95rem;
  text-decoration: none;
  transition: color 0.2s, background-color 0.2s;
}
.nav a:hover { color: var(--white); }
.nav a[aria-current="page"] {
  color: var(--black);
  background: var(--green);
}

/* --------------------------------------------------------------------------
   Seitenaufbau: links Objekt + Titel (sticky), rechts Text
   -------------------------------------------------------------------------- */

.page {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: start;
  padding-block: clamp(2rem, 6vw, 4rem) clamp(4rem, 10vw, 8rem);
}

.page__side {
  position: sticky;
  top: 5.5rem;
}

.stage {
  position: relative;
  aspect-ratio: 1 / 1;
  width: 100%;
  margin-inline: auto;
}

.stage::before {
  /* weicher grüner Schein hinter dem Objekt */
  content: "";
  position: absolute;
  inset: 18%;
  border-radius: 50%;
  background: radial-gradient(closest-side, var(--green-glow), transparent);
  pointer-events: none;
}

.stage canvas {
  position: relative;
  width: 100%;
  height: 100%;
  touch-action: pan-y;
}

.page__title {
  margin: 1.5rem 0 0;
  color: var(--white);
  font-size: clamp(2.75rem, 5.4vw, 5.25rem);
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: -0.055em;
  hyphens: manual;
}

.page__meta {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.page__meta strong { color: var(--green); font-weight: 600; }

/* --------------------------------------------------------------------------
   Fließtext
   -------------------------------------------------------------------------- */

.prose { max-width: 68ch; }
.prose > :first-child { margin-top: 0; }

.prose .lead {
  color: var(--white);
  font-size: clamp(1.15rem, 1.6vw, 1.35rem);
  line-height: 1.5;
  letter-spacing: -0.01em;
}

.prose h2 {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin: 3.25rem 0 0.9rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  color: var(--white);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.025em;
}

.prose h2 .num {
  flex: none;
  color: var(--green);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.prose h3 {
  margin: 2rem 0 0.5rem;
  color: var(--white);
  font-size: 1.1rem;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.prose p,
.prose ul,
.prose address { margin: 0 0 1rem; }

.prose address {
  font-style: normal;
  padding-left: 1rem;
  border-left: 2px solid var(--green);
  color: var(--white);
}

.prose ul { padding-left: 1.2rem; }
.prose li { margin-bottom: 0.4rem; }
.prose li::marker { color: var(--green); }

.prose strong { color: var(--white); }

.prose a {
  color: var(--white);
  text-decoration-color: var(--green);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 0.22em;
  overflow-wrap: anywhere;
  transition: color 0.2s;
}
.prose a:hover { color: var(--green); }

.callout {
  margin: 1.5rem 0;
  padding: 1.1rem 1.25rem;
  border: 1px solid var(--green-dim);
  border-radius: var(--radius);
  background: rgba(47, 224, 127, 0.05);
}
.callout > :first-child { margin-top: 0; }
.callout > :last-child { margin-bottom: 0; }

/* --------------------------------------------------------------------------
   Kontaktformular
   -------------------------------------------------------------------------- */

.form {
  display: grid;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.field { display: grid; gap: 0.45rem; }

.field label {
  color: var(--muted);
  font-size: 0.9rem;
}

.field input,
.field textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  background: #070707;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--white);
  font: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.field textarea { min-height: 10rem; resize: vertical; }

.field input:hover,
.field textarea:hover { border-color: #4a4a4a; }

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 4px var(--green-glow);
}

.field input:user-invalid,
.field textarea:user-invalid { border-color: var(--error); }

/* Honeypot gegen Spam-Bots */
.field--trap {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form__note {
  margin: 0;
  color: var(--muted);
  font-size: 0.875rem;
  line-height: 1.55;
}

.form__footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
}

.form__status {
  margin: 0;
  min-height: 1.5em;
  font-size: 0.95rem;
}
.form__status[data-state="ok"]    { color: var(--green); }
.form__status[data-state="error"] { color: var(--error); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0 1.5rem;
  border: 0;
  border-radius: 999px;
  background: var(--green);
  color: var(--black);
  font: inherit;
  font-weight: 650;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: background-color 0.2s, transform 0.2s var(--ease), box-shadow 0.2s;
}
.btn:hover { background: var(--white); }
.btn:active { transform: scale(0.97); }
.btn[disabled] { opacity: 0.6; cursor: progress; }

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

.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}

.site-footer nav { display: flex; gap: 1.5rem; }
.site-footer a { text-decoration: none; transition: color 0.2s; }
.site-footer a:hover { color: var(--white); }
.site-footer a[aria-current="page"] { color: var(--green); }

/* Seitenwechsel: Text blendet kurz aus, während das Objekt zerfällt */
body.is-leaving .prose,
body.is-leaving .page__title,
body.is-leaving .page__meta {
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}

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

@media (max-width: 900px) {
  .page { grid-template-columns: 1fr; gap: 2.5rem; }
  .page__side { position: static; }
  .stage { max-width: 22rem; aspect-ratio: 1 / 0.9; }
  .page__title { font-size: clamp(2.75rem, 14.5vw, 5.5rem); }
}

@media (max-width: 560px) {
  .form__row { grid-template-columns: 1fr; }
  .btn { width: 100%; }
  .nav a { padding: 0.4rem 0.65rem; font-size: 0.9rem; }
  .wordmark { font-size: 0.95rem; }
}

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