/* ================================================================
   INSTALLIQ — Design System v1.0
   Basis: Markenhandbuch 2026, Version 1.0
   ================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@200;300;400;500;600;700&family=JetBrains+Mono:wght@300;400;500&display=swap');

:root {
  /* — Brand Colors (aus Markenhandbuch) — */
  --amber: #FFB000;
  --amber-soft: #FFC94A;
  --amber-deep: #E39A00;
  --ink: #111111;
  --ink-soft: #1a1a1a;
  --paper: #FFFFFF;

  /* — Neutrale Grautöne (harmonisch zu Ink Black) — */
  --grey-50:  #FAFAF7;   /* off-white, editorial */
  --grey-100: #F3F2ED;
  --grey-200: #E7E5DE;
  --grey-300: #D5D2C8;
  --grey-400: #A8A69B;
  --grey-500: #6E6C63;
  --grey-600: #4A4842;
  --grey-700: #2A2925;

  /* — Semantische Tokens — */
  --bg:            var(--grey-50);
  --bg-elevated:   var(--paper);
  --bg-inverted:   var(--ink);
  --text:          var(--ink);
  --text-muted:    var(--grey-500);
  --text-inverted: var(--paper);
  --line:          var(--grey-200);
  --line-strong:   var(--grey-300);
  --accent:        var(--amber);

  /* — Typo — */
  --font-sans: 'Montserrat', -apple-system, system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Fluid Type Scale — Headlines Thin, Body Light */
  --fs-display: clamp(3.2rem, 8vw, 8rem);
  --fs-h1:      clamp(2.4rem, 5vw, 4.5rem);
  --fs-h2:      clamp(1.8rem, 3.2vw, 2.8rem);
  --fs-h3:      clamp(1.25rem, 1.8vw, 1.6rem);
  --fs-lead:    clamp(1.1rem, 1.4vw, 1.35rem);
  --fs-body:    1rem;
  --fs-small:   0.875rem;
  --fs-micro:   0.72rem;

  /* — Spacing (basierend auf 8px-Raster) — */
  --sp-1: 0.5rem;
  --sp-2: 1rem;
  --sp-3: 1.5rem;
  --sp-4: 2rem;
  --sp-6: 3rem;
  --sp-8: 4rem;
  --sp-12: 6rem;
  --sp-16: 8rem;
  --sp-24: 12rem;

  /* — Layout — */
  --container: 1240px;
  --container-wide: 1440px;
  --radius: 4px;
  --radius-lg: 12px;

  /* — Motion — */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 240ms;
  --dur: 480ms;
  --dur-slow: 900ms;
}

/* ================================================================
   Reset + Base
   ================================================================ */

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-sans);
  font-weight: 300;              /* Montserrat Light — Body */
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}

::selection { background: var(--amber); color: var(--ink); }

img, svg { display: block; max-width: 100%; height: auto; }
button { font: inherit; background: none; border: none; cursor: pointer; color: inherit; }
a { color: inherit; text-decoration: none; }

/* ================================================================
   Typography Classes
   ================================================================ */

.display, .h1, .h2, .h3 {
  font-weight: 200;              /* Montserrat Thin — Headlines */
  letter-spacing: -0.02em;
  line-height: 1.02;
  text-wrap: balance;
  color: var(--text);
}

.display {
  font-size: var(--fs-display);
  letter-spacing: -0.035em;
  line-height: 0.95;
}

.h1 { font-size: var(--fs-h1); }
.h2 { font-size: var(--fs-h2); }
.h3 {
  font-size: var(--fs-h3);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.lead {
  font-size: var(--fs-lead);
  font-weight: 300;
  line-height: 1.5;
  color: var(--text-muted);
  text-wrap: pretty;
  max-width: 62ch;
}

.eyebrow, .label {
  font-family: var(--font-sans);
  font-weight: 500;              /* Montserrat Medium — Labels */
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.24em;        /* weite Laufweite lt. Handbuch */
  color: var(--text-muted);
}

.mono {
  font-family: var(--font-mono);
  font-weight: 400;
  letter-spacing: 0;
}

.amber-mark {
  color: var(--amber);
  font-weight: 400;
}

/* ================================================================
   Container & Layout
   ================================================================ */

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--sp-3);
}

.container-wide {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--sp-3);
}

.section {
  padding: var(--sp-16) 0;
}

.section-lg {
  padding: var(--sp-24) 0 var(--sp-16);
}

.divider {
  height: 1px;
  background: var(--line);
  border: none;
}

/* ================================================================
   Buttons
   ================================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  padding: 1.05rem 1.75rem;
  border-radius: 999px;
  transition: all var(--dur-fast) var(--ease);
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--ink);
  color: var(--paper);
}
.btn-primary:hover {
  background: var(--amber);
  color: var(--ink);
  transform: translateY(-2px);
}

.btn-accent {
  background: var(--amber);
  color: var(--ink);
}
.btn-accent:hover {
  background: var(--ink);
  color: var(--paper);
  transform: translateY(-2px);
}

.btn-ghost {
  border-color: var(--line-strong);
  color: var(--ink);
}
.btn-ghost:hover {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.btn-link {
  padding: 0;
  background: none;
  color: var(--ink);
  border-radius: 0;
  gap: 0.5rem;
  position: relative;
}
.btn-link::after {
  content: '→';
  transition: transform var(--dur-fast) var(--ease);
}
.btn-link:hover::after { transform: translateX(4px); }

.btn .arr {
  display: inline-flex;
  width: 18px;
  transition: transform var(--dur-fast) var(--ease);
}
.btn:hover .arr { transform: translateX(4px); }

/* ================================================================
   Navigation
   ================================================================ */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.2rem 0;
  background: color-mix(in oklab, var(--bg) 82%, transparent);
  backdrop-filter: saturate(1.5) blur(14px);
  -webkit-backdrop-filter: saturate(1.5) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-fast) var(--ease), padding var(--dur-fast) var(--ease);
}
.nav.scrolled {
  border-bottom-color: var(--line);
  padding: 0.85rem 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--sp-3);
  gap: var(--sp-4);
}

.nav-logo {
  display: inline-flex;
  align-items: baseline;
  font-family: var(--font-sans);
  font-weight: 200;
  font-size: 1.35rem;
  letter-spacing: 0.03em;
  color: var(--ink);
}
.nav-logo .iq {
  color: var(--amber);
  font-weight: 300;
  margin-left: 0.05em;
}

.nav-links {
  display: flex;
  gap: 2.25rem;
  list-style: none;
}
.nav-links a {
  font-size: 0.82rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text);
  position: relative;
  padding: 0.35rem 0;
  transition: color var(--dur-fast) var(--ease);
  white-space: nowrap;   /* verhindert Umbruch bei „Über uns" etc. */
}
.nav-links a::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 1px;
  background: var(--amber);
  transition: width var(--dur) var(--ease);
}
.nav-links a:hover, .nav-links a.active { color: var(--ink); }
.nav-links a:hover::before, .nav-links a.active::before { width: 100%; }

.nav-cta { display: flex; gap: 0.75rem; align-items: center; }

.nav-toggle { display: none; }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-cta .btn:not(.btn-accent) { display: none; }
  .nav-toggle {
    display: inline-flex;
    width: 40px; height: 40px;
    align-items: center; justify-content: center;
    border: 1px solid var(--line-strong);
    border-radius: 999px;
  }
}

/* Mobile menu overlay */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: var(--paper);
  padding: 6rem 2rem 2rem;
  transform: translateY(-100%);
  transition: transform var(--dur) var(--ease);
}
.mobile-menu.open { transform: translateY(0); }
.mobile-menu ul { list-style: none; display: grid; gap: 1rem; }
.mobile-menu a {
  font-size: 2rem;
  font-weight: 200;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.mobile-menu a .num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--amber);
  margin-right: 1rem;
  vertical-align: super;
}

/* ================================================================
   Footer
   ================================================================ */

.footer {
  background: var(--ink);
  color: var(--paper);
  padding: var(--sp-12) 0 var(--sp-4);
  margin-top: 0;
}
/* CTA-Strip direkt vor Footer → nahtloser Übergang, kein weißer Streifen */
.cta-strip + .footer,
.standorte-cta + .footer {
  margin-top: 0;
}
.footer .container-wide {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--sp-6);
}
.footer-brand .display-line {
  font-size: 3rem;
  font-weight: 200;
  letter-spacing: -0.03em;
  line-height: 1;
}
.footer-brand .display-line .iq { color: var(--amber); }
.footer-brand p {
  margin-top: 1rem;
  color: var(--grey-400);
  font-size: 0.9rem;
  max-width: 32ch;
}
.footer h4 {
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.24em;
  color: var(--amber);
  margin-bottom: 1.25rem;
}
.footer ul { list-style: none; display: grid; gap: 0.65rem; }
.footer ul a {
  color: var(--grey-300);
  font-size: 0.9rem;
  font-weight: 300;
  transition: color var(--dur-fast) var(--ease);
}
.footer ul a:hover { color: var(--amber); }

.footer-bottom {
  max-width: var(--container-wide);
  margin: var(--sp-8) auto 0;
  padding: var(--sp-3) var(--sp-3) 0;
  border-top: 1px solid var(--grey-700);
  display: flex;
  justify-content: space-between;
  gap: var(--sp-3);
  font-size: 0.78rem;
  color: var(--grey-400);
  flex-wrap: wrap;
}
.footer-bottom .legal { display: flex; gap: 1.5rem; }
.footer-bottom .legal a:hover { color: var(--amber); }

@media (max-width: 900px) {
  .footer .container-wide { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

/* ================================================================
   Motion utilities — Scroll Reveals
   ================================================================ */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 900ms var(--ease-out), transform 900ms var(--ease-out);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}
.reveal.delay-1 { transition-delay: 80ms; }
.reveal.delay-2 { transition-delay: 160ms; }
.reveal.delay-3 { transition-delay: 240ms; }
.reveal.delay-4 { transition-delay: 320ms; }
.reveal.delay-5 { transition-delay: 400ms; }
.reveal.delay-6 { transition-delay: 480ms; }

/* Split-text lines */
.split-line {
  display: block;
  overflow: hidden;
}
.split-line > span {
  display: inline-block;
  transform: translateY(110%);
  transition: transform 1100ms var(--ease-out);
}
.split-line.in > span { transform: translateY(0); }
.split-line.d1 > span { transition-delay: 80ms; }
.split-line.d2 > span { transition-delay: 200ms; }
.split-line.d3 > span { transition-delay: 320ms; }
.split-line.d4 > span { transition-delay: 440ms; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .split-line > span { transform: none; transition: none; }
}

/* ================================================================
   Utility
   ================================================================ */

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-4); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-4); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-3); }

@media (max-width: 900px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  background: var(--bg-elevated);
}
.tag .dot {
  width: 6px; height: 6px;
  background: var(--amber);
  border-radius: 999px;
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.4; transform: scale(0.8); }
  50%      { opacity: 1;   transform: scale(1.2); }
}

/* Card baseline */
.card {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--sp-4);
  transition: border-color var(--dur-fast) var(--ease), transform var(--dur) var(--ease);
}
.card:hover {
  border-color: var(--line-strong);
}


/* Logo images */
.nav-logo img { height: 26px; width: auto; max-width: none; display: block; }
.nav.scrolled .nav-logo img { height: 24px; }
.footer-brand .display-line { line-height: 1; margin-bottom: 1rem; }
.footer-brand .display-line img { height: 40px; width: auto; max-width: none; display: block; }
@media (max-width: 900px){
  .nav-logo img { height: 24px; }
  .footer-brand .display-line img { height: 36px; }
}

/* ================================================================
   Mobile refinements — greift über CSS-Variablen auf alle Seiten
   ================================================================ */
@media (max-width: 900px) {
  :root {
    --sp-24: 7rem; --sp-16: 5rem; --sp-12: 3.75rem; --sp-8: 3rem; --sp-6: 2.5rem;
  }
  .nav-cta .btn-accent { padding: 0.62rem 1rem; font-size: 0.66rem; letter-spacing: 0.1em; }
}

@media (max-width: 640px) {
  :root {
    --sp-24: 5rem; --sp-16: 3.5rem; --sp-12: 2.75rem; --sp-8: 2.25rem;
    --sp-6: 1.75rem; --sp-4: 1.5rem; --sp-3: 1.15rem;
    --fs-display: clamp(2.5rem, 11.5vw, 3.4rem);
    --fs-h1: clamp(1.9rem, 8.5vw, 2.7rem);
    --fs-h2: clamp(1.5rem, 6vw, 2rem);
    --fs-lead: 1.02rem;
  }
  body { font-size: 0.98rem; line-height: 1.55; }

  .nav { padding: 0.8rem 0; }
  .nav-inner { padding: 0 1.15rem; gap: 0.75rem; }
  .nav-logo img { height: 22px; }

  /* Headline-Zeilen dürfen auf schmalen Screens umbrechen */
  .display, .h1, .h2 { letter-spacing: -0.02em; }

  /* Fixed-Nav-Abstand auf Unterseiten deutlich verkleinern */
  .page-head { padding-top: 6.5rem !important; }
  .lead { max-width: none; }

  /* Footer einspaltig */
  .footer { padding: var(--sp-12) 0 var(--sp-4); }
  .footer .container-wide { grid-template-columns: 1fr; gap: var(--sp-6); }
  .footer-brand { grid-column: auto; }
  .footer-brand p { max-width: none; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 0.85rem; }
  .footer-bottom .legal { gap: 1.25rem; flex-wrap: wrap; }

  .btn { padding: 0.9rem 1.35rem; }
}

@media (max-width: 400px) {
  .nav-cta .btn-accent .arr { display: none; }
  .nav-cta .btn-accent { padding: 0.6rem 0.85rem; }
}