/* ==========================================================================
   QUALITÄTS-STYLESHEET: HOMEPAGE VORLAGE (GEMÄSS REGIEBUCH 2026)
   100% Zero-Dependency | Local-First | Responsive | Barrierefrei
   ========================================================================== */

/* Lokale, selbst gehostete Schriften (100 % DSGVO-konform, Zero-CDN, Self-Hosted) */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('../fonts/InterVariable.woff2') format('woff2-variations'),
       url('../fonts/InterVariable.woff2') format('woff2');
}

:root {
  /* Farbsystem Light Mode (60-30-10 Regel) */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-surface: #f1f5f9;
  --bg-glass: rgba(255, 255, 255, 0.85);
  
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-inverse: #ffffff;
  
  --brand-primary: #1e3a8a;
  --brand-secondary: #2563eb;
  --brand-accent: #0ea5e9;
  --brand-highlight: #d97706;
  
  --border-color: #e2e8f0;
  --border-focus: #2563eb;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  --container-max: 1280px;
  --transition-speed: 0.25s;
  
  /* Fluid Typografie mit lokalem Inter-Font und robustem System-Fallback */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --step--1: clamp(0.83rem, 0.8rem + 0.15vw, 0.94rem);
  --step-0: clamp(1rem, 0.95rem + 0.25vw, 1.15rem);
  --step-1: clamp(1.2rem, 1.1rem + 0.5vw, 1.5rem);
  --step-2: clamp(1.44rem, 1.28rem + 0.8vw, 1.95rem);
  --step-3: clamp(1.73rem, 1.48rem + 1.25vw, 2.5rem);
  --step-4: clamp(2.07rem, 1.7rem + 1.85vw, 3.25rem);
}

/* Dark Mode Theme */
[data-theme="dark"] {
  --bg-primary: #090d16;
  --bg-secondary: #0f172a;
  --bg-surface: #1e293b;
  --bg-glass: rgba(15, 23, 42, 0.85);
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-inverse: #0f172a;
  
  --brand-primary: #3b82f6;
  --brand-secondary: #60a5fa;
  --brand-accent: #38bdf8;
  --brand-highlight: #f59e0b;
  
  --border-color: #334155;
  --border-focus: #60a5fa;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.7);
}

/* ==========================================================================
   CI/CD BRANDING PRESETS (Ganzheitliche Farbanpassung des Frameworks)
   ========================================================================== */

/* 1. Tech & Executive (Blau / Anthrazit / Eisblau) */
[data-preset="tech"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-surface: #f1f5f9;
  --bg-glass: rgba(255, 255, 255, 0.85);
  --brand-primary: #1e3a8a;
  --brand-secondary: #2563eb;
  --brand-accent: #0ea5e9;
  --brand-highlight: #d97706;
  --border-color: #e2e8f0;
  --border-focus: #2563eb;
  --hero-glow: radial-gradient(circle at 50% 20%, rgba(37, 99, 235, 0.12), transparent 70%);
}
[data-preset="tech"][data-theme="dark"] {
  --bg-primary: #090d16;
  --bg-secondary: #0f172a;
  --bg-surface: #1e293b;
  --bg-glass: rgba(15, 23, 42, 0.85);
  --brand-primary: #3b82f6;
  --brand-secondary: #60a5fa;
  --brand-accent: #38bdf8;
  --border-color: #334155;
  --border-focus: #60a5fa;
  --hero-glow: radial-gradient(circle at 50% 20%, rgba(59, 130, 246, 0.18), transparent 70%);
}

/* 2. Handwerk, Sanierung & Industrie (Graphit / Sicherheits-Orange / Ziegel) */
[data-preset="craft"] {
  --bg-primary: #fafaf9;
  --bg-secondary: #ffffff;
  --bg-surface: #f5f5f4;
  --bg-glass: rgba(255, 255, 255, 0.88);
  --brand-primary: #c2410c;
  --brand-secondary: #ea580c;
  --brand-accent: #f97316;
  --brand-highlight: #0284c7;
  --border-color: #e7e5e4;
  --border-focus: #ea580c;
  --hero-glow: radial-gradient(circle at 50% 20%, rgba(234, 88, 12, 0.14), transparent 70%);
}
[data-preset="craft"][data-theme="dark"] {
  --bg-primary: #0c0a09;
  --bg-secondary: #1c1917;
  --bg-surface: #292524;
  --bg-glass: rgba(28, 25, 23, 0.88);
  --brand-primary: #f97316;
  --brand-secondary: #fb923c;
  --brand-accent: #fdba74;
  --border-color: #44403c;
  --border-focus: #fb923c;
  --hero-glow: radial-gradient(circle at 50% 20%, rgba(249, 115, 22, 0.2), transparent 70%);
}

/* 3. Gourmet, Wein & Lifestyle (Bordeauxrot / Champagner-Gold / Warm-Ivory) */
[data-preset="gourmet"] {
  --bg-primary: #fdfbf7;
  --bg-secondary: #ffffff;
  --bg-surface: #fbf6ee;
  --bg-glass: rgba(255, 255, 255, 0.9);
  --brand-primary: #722f37;
  --brand-secondary: #991b1b;
  --brand-accent: #b45309;
  --brand-highlight: #d4af37;
  --border-color: #f3eae0;
  --border-focus: #722f37;
  --hero-glow: radial-gradient(circle at 50% 20%, rgba(114, 47, 55, 0.14), transparent 70%);
}
[data-preset="gourmet"][data-theme="dark"] {
  --bg-primary: #12080a;
  --bg-secondary: #1f0d11;
  --bg-surface: #2e141a;
  --bg-glass: rgba(31, 13, 17, 0.9);
  --brand-primary: #ef4444;
  --brand-secondary: #f87171;
  --brand-accent: #fbbf24;
  --border-color: #4a1d26;
  --border-focus: #ef4444;
  --hero-glow: radial-gradient(circle at 50% 20%, rgba(239, 68, 68, 0.2), transparent 70%);
}

/* Styling für die interaktive Farbspektrum-Kachel */
.palette-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.palette-card {
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  cursor: pointer;
  transition: all var(--transition-speed) ease;
  position: relative;
  text-align: left;
}

.palette-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--brand-accent);
}

.palette-card.active {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.25);
  background: var(--bg-surface);
}

.swatch-bar {
  display: flex;
  height: 28px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin: 1rem 0;
  border: 1px solid var(--border-color);
}

.swatch-item {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 700;
  color: #ffffff;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.6);
}

.swatch-60 { width: 60%; }
.swatch-30 { width: 30%; }
.swatch-10 { width: 10%; }

/* Zuschaltbarer High-Contrast Modus (WCAG AAA >= 7:1) */
[data-contrast="high"] {
  --bg-primary: #000000 !important;
  --bg-secondary: #000000 !important;
  --bg-surface: #121212 !important;
  --bg-glass: #000000 !important;
  
  --text-main: #ffffff !important;
  --text-muted: #ffff00 !important; /* Starkes Signal-Gelb */
  --text-inverse: #000000 !important;
  
  --brand-primary: #ffff00 !important;
  --brand-secondary: #00ffff !important;
  --brand-accent: #ffff00 !important;
  --brand-highlight: #00ff00 !important;
  
  --border-color: #ffffff !important;
  --border-focus: #ffff00 !important;
}

[data-contrast="high"] a {
  text-decoration: underline !important;
  text-decoration-thickness: 2px !important;
}

/* Reset & Box-Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-main);
  background-color: var(--bg-primary);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  hyphens: auto;
  -webkit-hyphens: auto;
  -ms-hyphens: auto;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  transition: background-color var(--transition-speed), color var(--transition-speed);
  /* Verhindert horizontales Ausbrechen langer deutscher Wörter auf Smartphones */
  overflow-wrap: break-word;
  word-wrap: break-word;
  word-break: normal;
}

p, h1, h2, h3, h4, h5, h6, li, span, button {
  overflow-wrap: break-word;
  word-wrap: break-word;
}

/* Container mit garantiertem Smartphone-Randabstand (Safe-Area & Gutter) */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: max(1.25rem, calc(0.75rem + env(safe-area-inset-left)));
  padding-right: max(1.25rem, calc(0.75rem + env(safe-area-inset-right)));
}

/* Skip-Link für Barrierefreiheit (visuell verborgen bis Fokus) */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--brand-primary);
  color: #ffffff;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-sm);
  z-index: 9999;
  font-weight: 700;
  text-decoration: none;
  box-shadow: var(--shadow-lg);
  transition: top 0.2s ease;
}

.skip-link:focus, .skip-link:focus-visible {
  top: 1rem;
  outline: 3px solid var(--border-focus);
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: background-color var(--transition-speed);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.25rem;
  gap: 1rem;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--text-main);
  font-weight: 800;
  letter-spacing: -0.02em;
  flex-shrink: 0;
  white-space: nowrap;
}

.brand-logo svg {
  width: 1.85rem;
  height: 1.85rem;
  flex-shrink: 0;
  fill: var(--brand-primary);
  transition: transform 0.25s ease;
}

.brand-logo:hover svg {
  transform: rotate(6deg) scale(1.06);
}

.brand-logo span {
  font-size: clamp(1rem, 0.92rem + 0.3vw, 1.25rem);
  white-space: nowrap;
  letter-spacing: -0.01em;
}

/* Elegante pill-förmige Desktop-Navigationsleiste */
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  background: var(--bg-surface);
  padding: 0.25rem 0.4rem;
  border-radius: 999px;
  border: 1px solid var(--border-color);
}

.nav-link {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.38rem 0.65rem;
  border-radius: 999px;
  white-space: nowrap;
  transition: all var(--transition-speed) ease;
}

.nav-link:hover, .nav-link.active {
  color: var(--brand-primary);
  background-color: var(--bg-primary);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

/* Controls (Theme / Kontrast / Hamburger) */
.header-controls {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  flex-shrink: 0;
}

.control-btn {
  width: 38px;
  height: 38px;
  min-width: 38px;
  min-height: 38px;
  padding: 0;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-main);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.control-btn:hover {
  background: var(--bg-primary);
  border-color: var(--brand-primary);
  transform: scale(1.06);
  box-shadow: var(--shadow-sm);
}

.control-btn:active {
  transform: scale(0.94);
}

/* Mobiles Menü (Drawer / Dropdown) */
.mobile-menu-btn {
  display: none; /* Erst ab Breakpoint 1080px sichtbar */
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.mobile-menu-btn.is-active {
  background: var(--brand-primary);
  color: #ffffff;
  border-color: var(--brand-primary);
}

.mobile-nav {
  display: none;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 12px 28px -6px rgba(0, 0, 0, 0.25);
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 999;
}

.mobile-nav.is-open {
  display: block;
  animation: slideDownNav 0.22s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes slideDownNav {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.mobile-nav-links {
  list-style: none;
  padding: 0.75rem 0 1.25rem;
  display: flex;
  flex-direction: column;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.5rem;
  color: var(--text-main);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.05rem;
  border-left: 4px solid transparent;
  transition: all var(--transition-speed) ease;
}

.mobile-nav-link:hover, .mobile-nav-link:focus, .mobile-nav-link:active {
  background: var(--bg-surface);
  color: var(--brand-primary);
  border-left-color: var(--brand-primary);
}

/* Hero Sektion */
.hero {
  padding: 4.5rem 0 3.5rem;
  background: var(--hero-glow, radial-gradient(circle at 50% 20%, rgba(37, 99, 235, 0.08), transparent 70%));
  transition: background var(--transition-speed) ease;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: center;
}

.hero-content {
  text-align: left;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: var(--step--1);
  font-weight: 600;
  color: var(--brand-primary);
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: var(--step-4);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  color: var(--text-main);
}

.hero-title span {
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  font-size: var(--step-1);
  color: var(--text-muted);
  max-width: 650px;
  margin: 0 0 2rem;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-image-wrapper {
  position: relative;
  border-radius: var(--radius-lg, 16px);
  overflow: hidden;
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.2), 0 0 0 1px var(--border-color);
  background: var(--bg-surface);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-image-wrapper:hover {
  transform: translateY(-4px);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25), 0 0 0 1px var(--brand-primary);
}

.hero-image {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
}

.hero-image-badge {
  position: absolute;
  bottom: 0.75rem;
  right: 0.75rem;
  background: rgba(15, 23, 42, 0.85);
  color: #ffffff;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2.25rem;
  }
  .hero-content {
    text-align: center;
  }
  .hero-lead {
    margin: 0 auto 2rem;
  }
  .hero-cta-group {
    justify-content: center;
  }
}

/* Buttons */
.btn {
  min-height: 48px;
  min-width: 48px;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-size: var(--step-0);
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: 1px solid transparent;
  transition: all var(--transition-speed) ease;
}

.btn-primary {
  background: var(--brand-primary);
  color: #ffffff;
  box-shadow: 0 4px 14px 0 rgba(30, 58, 138, 0.39);
}

.btn-primary:hover {
  background: var(--brand-secondary);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.45);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-main);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background: var(--border-color);
  transform: translateY(-2px);
}

/* Kategorie-Filter Buttons (z. B. im Blog) */
.filter-btn {
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  font-size: var(--step--1);
  font-weight: 600;
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-speed) ease;
}

.filter-btn:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  transform: translateY(-1px);
}

.filter-btn.active {
  background: var(--brand-primary);
  color: #ffffff;
  border-color: var(--brand-primary);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.35);
}

/* Grid-Layouts */
.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-speed), box-shadow var(--transition-speed), border-color var(--transition-speed);
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-accent);
}

.card-icon {
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.card-img-wrapper {
  position: relative;
  width: 100%;
  margin-bottom: 1rem;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.card-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-speed) ease;
}

.card:hover .card-img {
  transform: scale(1.03);
}

.ai-badge {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #f8fafc;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.ai-label-graphic {
  position: absolute;
  bottom: 0.6rem;
  right: 0.6rem;
  height: 28px;
  width: auto;
  max-width: 140px;
  object-fit: contain;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.45));
  pointer-events: none;
  z-index: 2;
  transition: transform var(--transition-speed) ease;
}

.card:hover .ai-label-graphic {
  transform: scale(1.05);
}

.card-title {
  font-size: var(--step-1);
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-main);
}

.card-text {
  color: var(--text-muted);
  font-size: var(--step-0);
  line-height: 1.6;
  flex-grow: 1;
}

/* Suchleiste & Filter */
.search-container {
  margin: 2.5rem 0 1.5rem;
  position: relative;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.search-input {
  width: 100%;
  min-height: 52px;
  padding: 0.75rem 1.25rem 0.75rem 3rem;
  font-size: var(--step-0);
  border-radius: var(--radius-full);
  border: 2px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-main);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.search-input:focus {
  border-color: var(--brand-primary);
  outline: none;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
}

.search-icon-pos {
  position: absolute;
  left: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

/* FAQ Akkordeon */
.faq-section {
  padding: 4rem 0;
}

.faq-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  overflow: hidden;
  transition: border-color var(--transition-speed);
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.5rem;
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
  border: none;
  font-size: var(--step-0);
  font-weight: 700;
  color: var(--text-main);
  text-align: left;
  cursor: pointer;
  gap: 1rem;
}

.faq-answer {
  padding: 0 1.5rem 1.25rem;
  color: var(--text-muted);
  font-size: var(--step-0);
  line-height: 1.6;
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(180deg);
}

.faq-toggle-icon {
  transition: transform 0.2s ease;
  font-size: 0.9rem;
  color: var(--brand-primary);
}

/* Passwort-Gate (Kryptografische Demo) */
.crypto-gate-card {
  background: var(--bg-secondary);
  border: 2px dashed var(--brand-primary);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  text-align: center;
  max-width: 650px;
  margin: 3rem auto;
}

.input-password {
  min-height: 48px;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-main);
  font-size: var(--step-0);
  margin-right: 0.5rem;
  width: 240px;
}

/* Datenschutzkonforme Video-Einbettung (youtube-nocookie - Voll zentriert & harmonisch) */
.video-showcase-box {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.video-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #000000;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  margin: 0 auto;
}

.video-iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.video-meta-note {
  width: 100%;
  margin-top: 1.25rem;
  padding: 1.25rem 1.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: var(--shadow-sm);
}

/* Textseiten (Impressum, Datenschutz) */
.legal-content {
  padding: 4rem 0;
  max-width: 860px;
  margin: 0 auto;
}

.legal-content h1 {
  font-size: var(--step-3);
  margin-bottom: 1.5rem;
  color: var(--text-main);
}

.legal-content h2 {
  font-size: var(--step-2);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: var(--brand-primary);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.legal-content h3 {
  font-size: var(--step-1);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.legal-content p, .legal-content ul {
  margin-bottom: 1.25rem;
  color: var(--text-muted);
  font-size: var(--step-0);
}

.legal-content ul {
  padding-left: 1.5rem;
}

.legal-content li {
  margin-bottom: 0.5rem;
}

/* Footer */
.site-footer {
  margin-top: auto;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 3rem 0 2rem;
  font-size: var(--step--1);
  color: var(--text-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-col h4 {
  color: var(--text-main);
  font-size: var(--step-0);
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-link {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-speed);
}

.footer-link:hover {
  color: var(--brand-primary);
}

/* Social Media Buttons (100% DSGVO-konform, Statische Links ohne Tracking) */
.social-links {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  list-style: none;
  margin-top: 0.5rem;
}

.social-btn {
  min-width: 44px;
  min-height: 44px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: all var(--transition-speed) ease;
}

.social-btn svg {
  width: 1.25rem;
  height: 1.25rem;
  fill: currentColor;
  transition: transform var(--transition-speed) ease;
}

.social-btn:hover {
  transform: translateY(-2px);
  color: var(--brand-primary);
  border-color: var(--brand-primary);
  background: var(--bg-secondary);
  box-shadow: var(--shadow-sm);
}

.social-btn:hover svg {
  transform: scale(1.1);
}

/* Plattform-spezifische Akzentfarben beim Hover */
.social-btn.linkedin:hover {
  color: #0a66c2;
  border-color: #0a66c2;
  background: rgba(10, 102, 194, 0.08);
}

.social-btn.facebook:hover {
  color: #1877f2;
  border-color: #1877f2;
  background: rgba(24, 119, 242, 0.08);
}

.social-btn.instagram:hover {
  color: #e4405f;
  border-color: #e4405f;
  background: rgba(228, 64, 95, 0.08);
}

.social-btn.youtube:hover {
  color: #ff0000;
  border-color: #ff0000;
  background: rgba(255, 0, 0, 0.08);
}

.social-btn.x-twitter:hover {
  color: var(--text-main);
  border-color: var(--text-main);
  background: rgba(15, 23, 42, 0.08);
}

[data-theme="dark"] .social-btn.x-twitter:hover {
  background: rgba(255, 255, 255, 0.1);
}

.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Responsive Breakpoints & Smartphone-Ergonomie */
@media (max-width: 1200px) {
  .nav-links {
    display: none; /* Schaltet bei kompakteren Bildschirmen sauber auf Hamburger um */
  }
  
  .mobile-menu-btn {
    display: inline-flex;
  }
}

@media (max-width: 768px) {
  .container {
    padding-left: max(1.15rem, calc(0.5rem + env(safe-area-inset-left)));
    padding-right: max(1.15rem, calc(0.5rem + env(safe-area-inset-right)));
  }
  
  .nav-wrapper {
    height: 4rem;
  }
  
  .hero {
    padding: 3.5rem 0 2rem;
  }

  .hero-title {
    font-size: clamp(1.75rem, 1.4rem + 2vw, 2.35rem);
    line-height: 1.2;
  }
  
  .hero-lead {
    font-size: 1.05rem;
    margin-bottom: 2rem;
  }
  
  .hero-cta-group {
    flex-direction: column;
    width: 100%;
    gap: 0.75rem;
  }
  
  .btn {
    width: 100%;
  }

  .grid-cards {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin: 2rem 0;
  }
  
  .palette-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
  
  .legal-content {
    padding: 2.5rem 0;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 0.75rem;
  }
}

@media (max-width: 480px) {
  .container {
    /* Fester, sicherer Mindestabstand auf kleinen Smartphone-Displays */
    padding-left: max(0.85rem, env(safe-area-inset-left));
    padding-right: max(0.85rem, env(safe-area-inset-right));
  }

  .nav-wrapper {
    height: 3.75rem;
    gap: 0.5rem;
  }

  .brand-logo {
    gap: 0.45rem;
  }

  .brand-logo svg {
    width: 1.55rem;
    height: 1.55rem;
  }

  .brand-logo span {
    font-size: 0.95rem;
  }

  .header-controls {
    gap: 0.3rem;
  }

  .control-btn {
    width: 34px;
    height: 34px;
    min-width: 34px;
    min-height: 34px;
    font-size: 0.9rem;
  }

  .card {
    padding: 1.35rem 1.15rem;
  }

  .palette-card {
    padding: 1.25rem 1rem;
  }

  .crypto-gate-card {
    padding: 1.5rem 1rem;
  }

  .input-password {
    width: 100%;
    margin-right: 0;
    margin-bottom: 0.75rem;
  }

  .faq-question {
    padding: 1rem 1.15rem;
    font-size: 1rem;
  }

  .faq-answer {
    padding: 0 1.15rem 1.15rem;
  }

  .search-input {
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    font-size: 0.95rem;
  }

  .search-icon-pos {
    left: 1rem;
  }
}

/* Print CSS (@media print) für Clean Print */
@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }
  .site-header, .site-footer, .header-controls, .hero-cta-group, .search-container, .btn, .control-btn {
    display: none !important;
  }
  .container {
    max-width: 100% !important;
    padding: 0 !important;
  }
  a {
    text-decoration: none !important;
    color: #000000 !important;
  }
  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.85em;
  }
}

/* Reduzierte Bewegung */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}