@import url('fonts.css');

/* ============================================================
   itt.ventures — Design System
   Abgeleitet aus dem Brand Sheet "Mark 2A Bridge".
   Vier Markenwerte, alles Weitere daraus gerechnet.
   ============================================================ */

:root {
  /* Markenwerte — unverändert */
  --bronze: #8C5A3D;
  --sand: #C9A184;
  --ink: #221E1B;
  --paper: #F4F1ED;

  --accent: var(--bronze);

  /* Dunkelmodus ist der Grundzustand */
  --bg: #141110;
  --elev-1: #1A1614;
  --elev-2: #221E1B;
  --elev-3: #2A2523;
  --line: rgba(244, 241, 237, 0.10);
  --line-2: rgba(244, 241, 237, 0.22);
  --tx: #F4F1ED;
  --tx-2: #B7AAA0;
  --tx-3: #877A70;
  --accent-tx: #C9A184;
  --on-accent: #F4F1ED;
  --glow: rgba(140, 90, 61, 0.45);
  --shadow-1: 0 2px 10px -3px rgba(0, 0, 0, 0.55);
  --shadow-2: 0 28px 64px -28px rgba(0, 0, 0, 0.85);
  --well-a: #241E19;
  --well-b: #17130F;

  /* Rhythmus */
  --gutter: clamp(20px, 5vw, 88px);
  --sec: clamp(64px, 9vw, 116px);

  /* Typografie */
  --f-body: 'Barlow', 'Helvetica Neue', Arial, sans-serif;
  --f-display: 'Barlow Condensed', 'Arial Narrow', 'Helvetica Neue', sans-serif;
  --d1: clamp(44px, 7.4vw, 88px);
  --d2: clamp(32px, 5.2vw, 64px);
  --h1: clamp(28px, 3.8vw, 48px);
  --h2: clamp(24px, 2.8vw, 34px);

  color-scheme: dark;
}

:root[data-theme='light'] {
  --bg: #F4F1ED;
  --elev-1: #FAF8F5;
  --elev-2: #EDE7DF;
  --elev-3: #E3DACE;
  --line: rgba(34, 30, 27, 0.12);
  --line-2: rgba(34, 30, 27, 0.26);
  --tx: #221E1B;
  --tx-2: #5D544D;
  --tx-3: #736A62;
  --accent-tx: #8C5A3D;
  --glow: rgba(140, 90, 61, 0.20);
  --shadow-1: 0 2px 10px -4px rgba(34, 30, 27, 0.18);
  --shadow-2: 0 26px 56px -26px rgba(34, 30, 27, 0.28);
  --well-a: #E8E0D6;
  --well-b: #DBD1C3;
  color-scheme: light;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme='dark']) {
    --bg: #F4F1ED;
    --elev-1: #FAF8F5;
    --elev-2: #EDE7DF;
    --elev-3: #E3DACE;
    --line: rgba(34, 30, 27, 0.12);
    --line-2: rgba(34, 30, 27, 0.26);
    --tx: #221E1B;
    --tx-2: #5D544D;
    --tx-3: #736A62;
    --accent-tx: #8C5A3D;
    --glow: rgba(140, 90, 61, 0.20);
    --shadow-1: 0 2px 10px -4px rgba(34, 30, 27, 0.18);
    --shadow-2: 0 26px 56px -26px rgba(34, 30, 27, 0.28);
    --well-a: #E8E0D6;
    --well-b: #DBD1C3;
    color-scheme: light;
  }
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--tx);
  font-family: var(--f-body);
  font-size: 17px;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  text-wrap: pretty;
  overflow-x: hidden;
}

a { color: var(--accent-tx); text-decoration: none; transition: color .25s; }
a:hover { color: var(--tx); }
:focus-visible { outline: 2px solid var(--accent-tx); outline-offset: 3px; border-radius: 2px; }

img, svg { max-width: 100%; }
/* Chrome wendet die UA-Regel [hidden] auf SVG nicht an — hier explizit. */
[hidden] { display: none !important; }
h1, h2, h3, p { margin: 0; }

/* --- Typografie --- */
.cond { font-family: var(--f-display); font-weight: 600; }
.d1 { font-size: var(--d1); line-height: 0.94; letter-spacing: -0.015em; }
.d2 { font-size: var(--d2); line-height: 0.98; letter-spacing: -0.012em; }
.h1 { font-size: var(--h1); line-height: 1.06; letter-spacing: -0.01em; }
.h2 { font-size: var(--h2); line-height: 1.12; }
.h3 { font-size: 21px; line-height: 1.28; font-weight: 600; }
.lead { font-size: clamp(18px, 1.5vw, 20px); line-height: 1.6; }
.sm { font-size: 15px; line-height: 1.6; }
.lbl {
  font-size: 12px; line-height: 1.2; letter-spacing: 0.20em;
  text-transform: uppercase; font-weight: 600;
}
.ph { color: var(--tx-3); }
.muted { color: var(--tx-2); }
.accent { color: var(--accent-tx); }

/* --- Layout --- */
.wrap { width: 100%; max-width: 1440px; margin: 0 auto; padding-inline: var(--gutter); }
.rule { height: 1px; background: var(--line); border: 0; margin: 0; }
.sec { padding-block: var(--sec); }
.stack { display: flex; flex-direction: column; }
.skip {
  position: absolute; left: -9999px; top: 0; z-index: 20;
  background: var(--accent); color: var(--on-accent); padding: 14px 20px; border-radius: 0 0 6px 0;
}
.skip:focus { left: 0; color: var(--on-accent); }

/* --- Bedienelemente --- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 52px; padding: 0 26px; border-radius: 999px;
  font-family: inherit; font-size: 16px; font-weight: 600;
  border: 1px solid transparent; cursor: pointer; text-align: center;
  transition: transform .28s cubic-bezier(.2,.7,.2,1), filter .28s, border-color .28s, color .28s;
}
.btn-p { background: var(--accent); color: var(--on-accent); }
.btn-p:hover { transform: translateY(-2px); filter: brightness(1.08); color: var(--on-accent); }
.btn-s { background: transparent; color: var(--tx); border-color: var(--line-2); }
.btn-s:hover { transform: translateY(-2px); border-color: var(--accent-tx); color: var(--accent-tx); }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; border-radius: 999px;
  border: 1px solid var(--line); color: var(--tx-2); background: transparent; cursor: pointer;
  transition: border-color .25s, color .25s;
}
.icon-btn:hover { border-color: var(--accent-tx); color: var(--accent-tx); }

/* --- Kopfzeile --- */
.site-head { position: sticky; top: 0; z-index: 10; background: var(--bg); border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 76px; }
.logo { display: inline-flex; align-items: center; gap: 11px; color: var(--tx); padding-block: 10px; }
.logo:hover { color: var(--tx); }
.logo-word { font-size: clamp(18px, 2vw, 21px); font-weight: 500; letter-spacing: -0.01em; }
.nav-links { display: none; align-items: center; gap: 34px; }
.nav-link { position: relative; color: var(--tx-2); font-weight: 500; padding-block: 8px; }
.nav-link::after {
  content: ''; position: absolute; left: 0; right: 100%; bottom: 0;
  height: 1px; background: var(--accent-tx); transition: right .35s cubic-bezier(.2,.7,.2,1);
}
.nav-link:hover { color: var(--tx); }
.nav-link:hover::after { right: 0; }
.nav-tools { display: flex; align-items: center; gap: 12px; }
/* Die Hauptaktion bleibt auf jeder Breite erreichbar; auf schmalen Geräten
   rutscht sie in eine eigene Zeile, statt zu verschwinden. */
.nav-cta { min-height: 46px; padding-inline: 20px; font-size: 15px; }
@media (max-width: 559px) {
  .nav { flex-wrap: wrap; padding-bottom: 14px; }
  .nav-tools { flex: 1 1 auto; justify-content: flex-end; }
  .nav-cta { order: 3; flex: 1 1 100%; }
}
@media (min-width: 900px) {
  .nav-links { display: flex; }
  .nav-cta { min-height: 52px; padding-inline: 26px; font-size: 16px; }
}

/* --- Hero --- */
.hero { display: grid; gap: clamp(32px, 5vw, 56px); align-items: center; padding-block: clamp(48px, 6vw, 88px); }
.hero-copy { gap: clamp(20px, 2.4vw, 30px); max-width: 640px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; padding-top: 6px; }
.hero-actions .btn { flex: 1 1 240px; }
.hero-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; padding-top: 12px; }
.dot { width: 4px; height: 4px; border-radius: 50%; background: var(--line-2); }
@media (min-width: 1024px) {
  .hero { grid-template-columns: minmax(0, 1fr) 500px; }
  .hero-actions .btn { flex: 0 0 auto; }
}

/* --- 3D: Markenzeichen und Bürohaus --- */
.stage { position: relative; display: flex; align-items: center; justify-content: center; }
.stage-mark { height: clamp(300px, 44vw, 480px); perspective: 1100px; perspective-origin: 50% 44%; }
.stage-tower { height: clamp(300px, 40vw, 400px); perspective: 950px; perspective-origin: 50% 42%; }
.halo {
  position: absolute; width: min(500px, 92%); aspect-ratio: 1; border-radius: 50%;
  background: radial-gradient(circle, var(--glow) 0%, rgba(140, 90, 61, 0) 63%);
  animation: pulse 7.5s ease-in-out infinite alternate;
}
.ring {
  position: absolute; width: min(470px, 88%); aspect-ratio: 1;
  border: 1px solid var(--line-2); border-radius: 50%;
  animation: spin 26s linear infinite;
}
.ring-2 { width: min(358px, 68%); border-style: dashed; opacity: .55; animation-duration: 40s; animation-direction: reverse; }
.pool {
  position: absolute; bottom: 12%; width: min(320px, 70%); height: 30px; border-radius: 50%;
  background: radial-gradient(ellipse at center, var(--glow), rgba(140, 90, 61, 0) 72%);
}
.bob { transform-style: preserve-3d; animation: bob 6.5s ease-in-out infinite alternate; }
.mark3d {
  position: relative; width: clamp(190px, 26vw, 296px); aspect-ratio: 1;
  transform-style: preserve-3d; animation: sway 13s ease-in-out infinite alternate;
}
.mark3d > div { position: absolute; inset: 0; }
.mark3d svg { display: block; width: 100%; height: 100%; }
.tower {
  position: relative; width: 200px; height: 236px;
  transform-style: preserve-3d; animation: tower-sway 22s ease-in-out infinite alternate;
}
.plate { position: absolute; left: 50%; bottom: 0; border-radius: 3px; }

@keyframes spin { from { transform: rotateX(76deg) rotateZ(0deg); } to { transform: rotateX(76deg) rotateZ(360deg); } }
@keyframes bob { from { transform: translateY(-10px); } to { transform: translateY(10px); } }
@keyframes pulse { from { opacity: .55; transform: scale(0.94); } to { opacity: 1; transform: scale(1.06); } }
@keyframes sway {
  from { transform: rotateX(-13deg) rotateY(-30deg) rotateZ(-1deg); }
  to   { transform: rotateX(-7deg) rotateY(26deg) rotateZ(1deg); }
}
@keyframes tower-sway {
  from { transform: rotateX(-9deg) rotateY(-26deg); }
  to   { transform: rotateX(-15deg) rotateY(24deg); }
}
@keyframes rise { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: none; } }
.rv { animation: rise .95s cubic-bezier(.2,.7,.2,1) both; }

@media (prefers-reduced-motion: reduce) {
  .halo, .ring, .bob, .mark3d, .tower, .rv { animation: none !important; }
  .mark3d { transform: rotateX(-10deg) rotateY(-16deg); }
  .tower { transform: rotateX(-12deg) rotateY(-18deg); }
  .rv { opacity: 1; transform: none; }
}

/* --- Kennzahlen --- */
.stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line); border-block: 1px solid var(--line); }
.stat { background: var(--bg); padding: clamp(24px, 3vw, 40px) clamp(20px, 2.4vw, 34px); }
.stat-n { font-size: clamp(38px, 4.4vw, 56px); line-height: 1; letter-spacing: -0.02em; color: var(--accent-tx); }
@media (min-width: 900px) { .stats { grid-template-columns: repeat(4, minmax(0, 1fr)); } }

/* --- Abschnittskopf --- */
.sec-head { display: grid; gap: clamp(24px, 3vw, 48px); margin-bottom: clamp(34px, 4vw, 56px); }
.sec-head-copy { gap: 20px; max-width: 700px; }
@media (min-width: 1024px) {
  .sec-head-split { grid-template-columns: minmax(0, 1fr) 420px; align-items: center; }
}

/* --- Über uns --- */
.about { display: grid; gap: clamp(32px, 4vw, 72px); align-items: center; }
.about-copy { gap: 20px; max-width: 620px; }
@media (min-width: 1024px) { .about { grid-template-columns: minmax(0, 1fr) 460px; } }

/* --- Bildfläche (Platzhalter, bis echte Fotos da sind) --- */
.well {
  position: relative; overflow: hidden; border-radius: 6px;
  background: linear-gradient(142deg, var(--well-a), var(--well-b));
  min-height: 260px;
}
.well::before {
  content: ''; position: absolute; inset: 0; opacity: .5;
  background-image: repeating-linear-gradient(45deg, transparent 0 13px, var(--line) 13px 14px);
}
.well-tag { position: absolute; left: 18px; bottom: 16px; color: var(--tx-3); }
.well-about { aspect-ratio: 4 / 3.4; }

/* --- Kriterien --- */
.crit-grid {
  display: grid; grid-template-columns: 1fr; gap: 1px;
  background: var(--line); border: 1px solid var(--line); border-radius: 6px; overflow: hidden;
}
.crit { background: var(--bg); padding: clamp(26px, 2.6vw, 38px) clamp(22px, 2.2vw, 32px); gap: 13px; transition: background-color .35s; }
.crit:hover { background: var(--elev-1); }
.crit-ico {
  display: flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; border-radius: 999px;
  border: 1px solid var(--line-2); color: var(--accent-tx); margin-bottom: 6px;
}
@media (min-width: 700px) { .crit-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1100px) { .crit-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }

/* --- Karten --- */
.card {
  background: var(--elev-1); border: 1px solid var(--line); border-radius: 6px;
  transform-style: preserve-3d;
  transition: transform .38s cubic-bezier(.2,.7,.2,1), border-color .38s, box-shadow .38s;
}
.card:hover { transform: perspective(1000px) rotateX(2.2deg) translateY(-5px); border-color: var(--line-2); box-shadow: var(--shadow-2); }
.owner { display: grid; grid-template-columns: 1fr; gap: 24px; }
.owner-item { padding: clamp(26px, 2.4vw, 34px) clamp(22px, 2.2vw, 30px); gap: 12px; }
.owner-n { font-size: 15px; letter-spacing: 0.22em; color: var(--accent-tx); font-weight: 600; }
@media (min-width: 900px) { .owner { grid-template-columns: repeat(3, minmax(0, 1fr)); } }

/* --- Kontaktband --- */
.cta {
  position: relative; display: grid; gap: clamp(28px, 4vw, 56px); align-items: center;
  padding: clamp(36px, 5vw, 78px) clamp(24px, 4vw, 72px);
  border-radius: 6px; overflow: hidden;
  background: linear-gradient(118deg, var(--elev-2), var(--elev-1));
  border: 1px solid var(--line);
}
.cta-glow {
  position: absolute; right: -120px; top: -160px; width: 520px; height: 520px; border-radius: 50%;
  background: radial-gradient(circle, var(--glow), rgba(140, 90, 61, 0) 66%); pointer-events: none;
}
.cta > * { position: relative; }
.kv { display: flex; align-items: center; gap: 13px; }
.kv svg { flex: none; color: var(--accent-tx); }
@media (min-width: 1024px) { .cta { grid-template-columns: minmax(0, 1fr) auto; } }

/* --- Fußzeile --- */
.foot { display: grid; grid-template-columns: 1fr; gap: 36px; padding-block: clamp(48px, 6vw, 76px) 40px; }
.foot-col { gap: 13px; }
.foot-bot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; padding-block: 26px 46px; }
.foot-links { display: flex; gap: 28px; }
@media (min-width: 760px) { .foot { grid-template-columns: 1.6fr repeat(3, 1fr); gap: 48px; } }

/* --- Impressum / Rechtstexte --- */
.legal-head { position: relative; gap: 24px; padding-block: clamp(48px, 6vw, 92px) clamp(36px, 4vw, 64px); max-width: 760px; }
.legal-glow {
  position: absolute; right: -180px; top: -160px; width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, var(--glow), rgba(140, 90, 61, 0) 64%); pointer-events: none;
}
.legal { display: grid; gap: 20px; padding-block: 34px; border-top: 1px solid var(--line); }
.legal-body { gap: 12px; max-width: 720px; }
.dl { display: grid; grid-template-columns: 1fr; gap: 4px 32px; }
.dl dt { color: var(--tx-3); font-size: 15px; }
.dl dd { margin: 0; padding-bottom: 12px; }
@media (min-width: 760px) {
  .legal { grid-template-columns: 300px minmax(0, 1fr); gap: 48px; }
  .dl { grid-template-columns: 240px minmax(0, 1fr); gap: 14px 32px; }
  .dl dd { padding-bottom: 0; }
}