/* ═══════════════════════════════
   FONTS
═══════════════════════════════ */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('../font/inter-variable-normal.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: italic;
  font-weight: 100 900;
  font-display: swap;
  src: url('../font/inter-variable-italic.woff2') format('woff2');
}

/* ═══════════════════════════════
   TOKENS
═══════════════════════════════ */
:root {
  /* Brand-Tokens (semantisch) */
  --accent:       #111111;
  --accent-2:     #111111;
  --on-accent:    #ffffff;
  --ink:          #111111;
  --bg:           #ffffff;
  --on-dark:      #ffffff;
  --surface-inv:    #ffffff;
  --on-surface-inv: #111111;

  /* Neutral-Skala */
  --neutral-50:   #fafafa;
  --neutral-100:  #f4f4f4;
  --neutral-200:  #e8e8e8;
  --neutral-400:  #aaaaaa;
  --neutral-600:  #666666;
  --neutral-700:  #374151;

  /* Fonts */
  --font-heading: 'Inter', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, sans-serif;

  /* Struktur */
  --container:    78rem;
  --pad:          clamp(1.25rem, 5vw, 4rem);
  --section-v:    clamp(5rem, 10vw, 9rem);
  --ease:         cubic-bezier(0.4, 0, 0.2, 1);
  --t:            0.3s;
}

/* ═══════════════════════════════
   BASE
═══════════════════════════════ */
body {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 18px;
  color: var(--ink);
  background: var(--bg);
}

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

section { padding-block: var(--section-v); }

/* ═══════════════════════════════
   TYPOGRAPHY
═══════════════════════════════ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
}

.pre-hl {
  display: inline-block;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--on-dark);
  margin-bottom: 1rem;
}

.pre-hl--dark { color: var(--neutral-600); }

.hl-hero {
  font-family: var(--font-heading);
  font-size: clamp(3.5rem, 10vw, 9rem);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--on-dark);
  text-transform: uppercase;
}

.hl-xl {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 5.5rem);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -0.035em;
  text-transform: uppercase;
}

.hl-lg {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.hl-md {
  font-family: var(--font-heading);
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.015em;
}

.section-header {
  margin-bottom: clamp(3rem, 6vw, 5rem);
}

.section-subline {
  font-size: clamp(1.2rem, 1.5vw, 1.35rem);
  line-height: 1.75;
  color: var(--neutral-600);
  max-width: 600px;
  margin-top: 1rem;
}

/* ═══════════════════════════════
   BUTTONS
═══════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.2rem;
  cursor: pointer;
  border-radius: 4px;
  padding: 0.875rem 1.875rem;
  transition: transform 0.7s var(--ease), background 0.7s var(--ease), color 0.7s var(--ease), border-color 0.7s var(--ease);
  letter-spacing: -0.01em;
}

.btn-yellow {
  background: var(--accent);
  color: var(--on-accent);
}
.btn-yellow:hover {
  transform: scale(1.04);
}

.btn-white {
  background: var(--surface-inv);
  color: var(--on-surface-inv);
}
.btn-white:hover {
  transform: scale(1.04);
}

.btn-outline-white {
  border: 2px solid rgba(255,255,255,0.5);
  color: var(--on-dark);
}
.btn-outline-white:hover {
  border-color: var(--on-dark);
  background: rgba(255,255,255,0.1);
  transform: scale(1.04);
}

.btn-outline-dark {
  border: 2px solid var(--ink);
  color: var(--ink);
}
.btn-outline-dark:hover {
  background: var(--ink);
  color: var(--on-dark);
  transform: scale(1.04);
}

/* ═══════════════════════════════
   FADE-IN ANIMATION
═══════════════════════════════ */
.fade-in {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.75s var(--ease), transform 0.75s var(--ease);
}
.fade-in.delay-1 { transition-delay: 0.1s; }
.fade-in.delay-2 { transition-delay: 0.2s; }
.fade-in.delay-3 { transition-delay: 0.3s; }
.fade-in.delay-4 { transition-delay: 0.4s; }
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ═══════════════════════════════
   NAV
═══════════════════════════════ */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--bg);
  border-bottom: 1px solid var(--neutral-200);
  transition: box-shadow var(--t) var(--ease);
}
.site-nav.scrolled {
  box-shadow: 0 2px 24px rgba(0,0,0,0.08);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.nav-logo {
  font-size: 1.125rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--ink);
}
.nav-logo span { color: var(--accent); }
.nav-logo-img { max-height: 2.2rem; width: auto; display: block; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}
.nav-links a {
  font-size: 1rem;
  font-weight: 700;
  color: var(--neutral-600);
  transition: all var(--t);
}
.nav-links a:hover { color: var(--ink); }

/* Verschachtelte Navigation: Elternteil mit Aufklapp-Untermenü (Desktop). */
.nav-links .has-sub { position: relative; }
.nav-links .has-sub > a::after {
  content: "";
  display: inline-block;
  width: 0.4em; height: 0.4em;
  margin-left: 0.4em;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: translateY(-0.15em) rotate(45deg);
  transition: transform var(--t);
}
.nav-links .has-sub:hover > a::after,
.nav-links .has-sub:focus-within > a::after { transform: translateY(0.05em) rotate(225deg); }
.nav-sub {
  position: absolute;
  top: 100%; left: 0;
  min-width: 12rem;
  margin: 0; padding: 0.4rem 0;
  list-style: none;
  background: var(--bg);
  border: 1px solid var(--neutral-200);
  border-radius: 10px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
  opacity: 0; visibility: hidden;
  transform: translateY(6px);
  transition: opacity var(--t), transform var(--t), visibility var(--t);
  z-index: 50;
}
.nav-links .has-sub:hover .nav-sub,
.nav-links .has-sub:focus-within .nav-sub {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.nav-sub li { display: block; }
.nav-sub a {
  display: block;
  padding: 0.5rem 1rem;
  font-size: 0.95rem;
  white-space: nowrap;
  color: var(--neutral-600);
}
.nav-sub a:hover { color: var(--ink); background: var(--neutral-100); }

.nav-links .nav-email {
  font-weight: 700;
  color: var(--ink);
  border-bottom: 2px solid var(--accent);
  padding-bottom: 1px;
  transition: all 0.7s;
}
.nav-links .nav-email:hover {
  color: var(--accent); border-color: var(--accent);
  transform: scale(1.04);
}

.nav-btn {
  padding: 0.5rem 1.125rem;
  font-weight: 700;
  color: var(--on-accent) !important;
  transition: all 0.7s;
}
.nav-btn:hover {
  color: var(--on-accent) !important;
  transform: scale(1.04);
}

/* ═══════════════════════════════
   LEGAL FOOTER
═══════════════════════════════ */
.legal-footer {
  background: var(--ink);
  padding-block: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.legal-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.legal-logo {
  font-size: 0.9375rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--on-dark);
}
.legal-logo span { color: var(--on-dark); }
.legal-copy {
  font-size: 0.8125rem;
  color: var(--neutral-400);
}
.legal-links {
  display: flex;
  gap: 1.75rem;
}
.legal-links a {
  font-size: 0.8125rem;
  color: var(--neutral-400);
  transition: color var(--t);
}
.legal-links a:hover { color: var(--on-dark); }

/* ═══════════════════════════════
   PARALLAX IMAGE WRAPPER
═══════════════════════════════ */
.parallax-wrap {
  overflow: hidden;
  border-radius: inherit;
}
.parallax-wrap img {
  will-change: transform;
}

/* ═══════════════════════════════
   TO-TOP BUTTON
═══════════════════════════════ */
.to-top-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 3rem;
  height: 3rem;
  background: var(--ink);
  color: var(--on-dark);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 900;
  opacity: 0;
  visibility: hidden;
  transform: translateY(0.75rem) scale(0.9);
  transition: opacity 0.35s var(--ease), visibility 0.35s var(--ease), transform 0.35s var(--ease);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
.to-top-btn.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}
.to-top-btn:hover {
  transform: translateY(0) scale(1.1);
}

@media (max-width: 520px) {
  .nav-links { gap: 1.25rem; }
  .nav-links .hide-sm { display: none; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
}

/* ═══════════════════════════════
   SKIP LINK
═══════════════════════════════ */
.skip-link {
  position: fixed;
  top: -100%;
  left: 1rem;
  z-index: 9999;
  padding: 0.75rem 1.5rem;
  background: var(--ink);
  color: var(--on-dark);
  font-weight: 700;
  font-size: 1rem;
  border-radius: 0 0 6px 6px;
  text-decoration: none;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 0;
  outline: 3px solid var(--on-dark);
  outline-offset: -4px;
}

/* ═══════════════════════════════
   FOCUS STYLES
═══════════════════════════════ */
:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 3px;
  border-radius: 2px;
}
.hero :focus-visible,
.footer-rich :focus-visible,
.ki-analyse-section :focus-visible,
.marken-section :focus-visible {
  outline-color: var(--on-dark);
}
.legal-footer :focus-visible {
  outline-color: var(--ink);
}
.to-top-btn:focus-visible {
  outline: 3px solid var(--on-dark);
  outline-offset: 4px;
}

/* ═══════════════════════════════
   FORM VALIDATION & STATUS
═══════════════════════════════ */
.form-error {
  display: block;
  color: #ff8080;
  font-size: 0.82rem;
  margin-top: 0.3rem;
  min-height: 1.1em;
}
.form-group input[aria-invalid="true"],
.form-group textarea[aria-invalid="true"] {
  border-color: rgba(255,100,100,0.7);
}
.form-status {
  padding: 0.75rem 1rem;
  border-radius: 6px;
  font-size: 0.9rem;
  margin-bottom: 1rem;
  display: none;
  font-weight: 600;
}
.form-status.success {
  display: block;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.3);
  color: var(--on-dark);
}
.form-status.error {
  display: block;
  background: rgba(200,50,50,0.2);
  border: 1px solid rgba(200,50,50,0.5);
  color: #ff9090;
}

/* ═══════════════════════════════
   PREFERS-REDUCED-MOTION
═══════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .hero-slide {
    transition: none;
    animation: none !important;
  }
  .reveal-word {
    transition: none;
  }
  .marken-row-1,
  .marken-row-2 {
    transform: none !important;
  }
  .btn,
  .nav-links a,
  .to-top-btn,
  .hero-pause-btn {
    transition: none;
  }
  .hero-pause-btn {
    display: none;
  }
}

/* Section-spezifisches CSS liegt jetzt in sections/<slug>/style.css und wird
   nur geladen, wenn die Section gerendert wird (siehe inc/head.php). */
/* ═══════════════════════════════
   RESPONSIVE (global)
═══════════════════════════════ */
@media (max-width: 768px) {
  .nav-links .hide-mobile { display: none; }
  .legal-inner { flex-direction: column; align-items: flex-start; gap: 1rem; }
}