/* ============================================
   VidaGram Design System
   Premium dark theme with glassmorphism
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* --- CSS Custom Properties --- */
:root {
  --bg-primary: #080d1a;
  --bg-secondary: #0f1629;
  --bg-tertiary: #151d33;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.07);
  --bg-glass: rgba(8, 13, 26, 0.75);
  --bg-glass-light: rgba(255, 255, 255, 0.05);

  --primary: #10b981;
  --primary-light: #34d399;
  --primary-dark: #059669;
  --primary-glow: rgba(16, 185, 129, 0.25);
  --secondary: #f59e0b;
  --secondary-light: #fbbf24;
  --accent: #ec4899;
  --accent-light: #f472b6;
  --info: #3b82f6;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;

  --text: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-dim: #475569;

  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);
  --border-active: rgba(16, 185, 129, 0.4);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(16, 185, 129, 0.12);
  --shadow-glow-strong: 0 0 60px rgba(16, 185, 129, 0.2);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --transition-fast: 150ms ease;
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: var(--primary-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* --- Utility Classes --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 6rem 0;
  position: relative;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary-light);
  margin-bottom: 1rem;
  padding: 0.4rem 1rem;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.15);
  border-radius: var(--radius-full);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--text) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.7;
}

.text-center {
  text-align: center;
}

.text-center .section-subtitle {
  margin: 0 auto;
}

/* --- Glass Card --- */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-base);
}

.glass-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

/* --- Button Styles --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(16, 185, 129, 0.4);
  color: #fff;
}

.btn-secondary {
  background: var(--bg-glass-light);
  color: var(--text);
  border: 1px solid var(--border-hover);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--primary);
  color: var(--primary-light);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.05rem;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition: background var(--transition-base), padding var(--transition-base), box-shadow var(--transition-base);
  will-change: transform;
  transform: translateZ(0);
}

.nav.scrolled {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: inset 0 -1px 0 0 var(--border);
  padding: 0.75rem 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.nav-logo-img {
  height: 40px;
  width: auto;
  filter: brightness(0) invert(1);
  opacity: 0.92;
  transition: opacity var(--transition-fast);
}

.nav-logo:hover .nav-logo-img {
  opacity: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary-light);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition-base);
}

/* --- Hero Section --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 5rem;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 40%, rgba(16, 185, 129, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 30%, rgba(59, 130, 246, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 50% 80%, rgba(245, 158, 11, 0.05) 0%, transparent 60%);
}

.hero-bg .hero-image {
  position: absolute;
  inset: 0;
  opacity: 0.12;
  background-size: cover;
  background-position: center;
  filter: blur(1px);
}

/* Floating orbs */
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  animation: float 12s ease-in-out infinite;
  pointer-events: none;
}

.orb-1 {
  width: 400px;
  height: 400px;
  background: rgba(16, 185, 129, 0.06);
  top: -10%;
  left: -5%;
  animation-delay: 0s;
}

.orb-2 {
  width: 300px;
  height: 300px;
  background: rgba(59, 130, 246, 0.05);
  top: 50%;
  right: -5%;
  animation-delay: -4s;
}

.orb-3 {
  width: 250px;
  height: 250px;
  background: rgba(245, 158, 11, 0.04);
  bottom: -5%;
  left: 30%;
  animation-delay: -8s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) translateX(0); }
  25% { transform: translateY(-20px) translateX(10px); }
  50% { transform: translateY(10px) translateX(-15px); }
  75% { transform: translateY(-15px) translateX(5px); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--secondary);
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--radius-full);
  padding: 0.4rem 1.2rem;
  margin-bottom: 1.5rem;
  animation: fadeInDown 0.8s ease both;
}

.hero h1 {
  font-size: clamp(2.5rem, 5.5vw, 4rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.8s ease 0.1s both;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.2rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2.5rem;
  max-width: 560px;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  animation: fadeInUp 0.8s ease 0.4s both;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary-light);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* --- How It Works --- */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.step-card {
  padding: 2rem;
  text-align: center;
  position: relative;
}

.step-number {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 800;
  margin: 0 auto 1.5rem;
  position: relative;
}

.step-card:nth-child(1) .step-number {
  background: rgba(16, 185, 129, 0.1);
  color: var(--primary-light);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.step-card:nth-child(2) .step-number {
  background: rgba(59, 130, 246, 0.1);
  color: var(--info);
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.step-card:nth-child(3) .step-number {
  background: rgba(245, 158, 11, 0.1);
  color: var(--secondary);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.step-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.step-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.step-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Connector arrows between steps */
.step-card:not(:last-child)::after {
  content: '→';
  position: absolute;
  right: -1.25rem;
  top: 2.5rem;
  font-size: 1.2rem;
  color: var(--text-dim);
}

/* --- Bereiche / Areas Section --- */
.areas-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.area-card {
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
}

.area-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: 3px 3px 0 0;
}

.area-card.area-alltag::before {
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
}

.area-card.area-admin::before {
  background: linear-gradient(90deg, var(--info), #60a5fa);
}

.area-card.area-karriere::before {
  background: linear-gradient(90deg, var(--secondary), #fbbf24);
}

.areas-grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.area-icon {
  font-size: 2.5rem;
  margin-bottom: 1.25rem;
}

.area-card h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.area-card .area-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.area-modules {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.area-modules li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding: 0.5rem 0.75rem;
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.area-modules li:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
}

.area-modules li .module-emoji {
  font-size: 1.1rem;
  flex-shrink: 0;
}

.area-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  margin-left: auto;
  flex-shrink: 0;
}

.badge-available {
  background: rgba(34, 197, 94, 0.1);
  color: var(--success);
  border: 1px solid rgba(34, 197, 94, 0.2);
}

.badge-soon {
  background: rgba(245, 158, 11, 0.1);
  color: var(--secondary);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.badge-new {
  background: rgba(139, 92, 246, 0.1);
  color: #a78bfa;
  border: 1px solid rgba(139, 92, 246, 0.2);
}

/* --- Module Grid Section --- */
.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-top: 3rem;
}

.module-card {
  padding: 1.75rem;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.module-card.active {
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
}

.module-card .module-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.module-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.module-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 1rem;
}

.module-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.module-meta span {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.module-card.module-new {
  border-color: rgba(139, 92, 246, 0.15);
}

.module-card.module-new:hover {
  border-color: rgba(139, 92, 246, 0.3);
}

/* --- Demo Section --- */
.demo-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.demo-container {
  margin-top: 3rem;
}

.demo-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
  padding: 1.5rem 2rem;
}

.demo-header .demo-icon {
  width: 64px;
  height: 64px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  flex-shrink: 0;
}

.demo-header-text h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.demo-header-text p {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* Tab Navigation */
.tab-nav {
  display: flex;
  gap: 0.25rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.tab-nav::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.02);
}

.tab-btn.active {
  color: var(--primary-light);
  border-bottom-color: var(--primary);
}

.tab-content {
  display: none;
  animation: fadeIn 0.4s ease;
}

.tab-content.active {
  display: block;
}

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

/* --- Overview Tab --- */
.overview-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.overview-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.5rem;
}

.overview-item .ov-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
}

.overview-item h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.overview-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* --- Checklist Tab --- */
.checklist {
  max-width: 700px;
}

.checklist-group {
  margin-bottom: 2rem;
}

.checklist-group-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.checklist-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.checklist-item:hover {
  color: var(--text);
}

.checklist-item.checked {
  color: var(--text-dim);
  text-decoration: line-through;
}

.check-box {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  border: 2px solid var(--text-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.checklist-item.checked .check-box {
  background: var(--primary);
  border-color: var(--primary);
}

.check-box svg {
  width: 14px;
  height: 14px;
  stroke: white;
  stroke-width: 3;
  opacity: 0;
  transform: scale(0.5);
  transition: all var(--transition-fast);
}

.checklist-item.checked .check-box svg {
  opacity: 1;
  transform: scale(1);
}

.checklist-progress {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.progress-bar {
  flex: 1;
  height: 8px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
  width: 0%;
}

.progress-text {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}

/* --- Quiz Tab --- */
.quiz-container {
  max-width: 700px;
}

.quiz-progress {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

.quiz-progress-bar {
  flex: 1;
  height: 6px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.quiz-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

.quiz-progress-text {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}

.quiz-question {
  margin-bottom: 2rem;
  animation: fadeIn 0.4s ease;
}

.quiz-question h4 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--text);
  line-height: 1.4;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.quiz-option {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.quiz-option:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  color: var(--text);
}

.quiz-option.selected {
  border-color: var(--primary);
  background: rgba(16, 185, 129, 0.06);
  color: var(--text);
}

.quiz-option.correct {
  border-color: var(--success);
  background: rgba(34, 197, 94, 0.08);
  color: var(--success);
}

.quiz-option.wrong {
  border-color: var(--danger);
  background: rgba(239, 68, 68, 0.08);
  color: var(--danger);
}

.quiz-radio {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--text-dim);
  flex-shrink: 0;
  transition: all var(--transition-fast);
  position: relative;
}

.quiz-option.selected .quiz-radio {
  border-color: var(--primary);
}

.quiz-option.selected .quiz-radio::after {
  content: '';
  position: absolute;
  inset: 3px;
  background: var(--primary);
  border-radius: 50%;
}

.quiz-option.correct .quiz-radio {
  border-color: var(--success);
  background: var(--success);
}

.quiz-option.correct .quiz-radio::after {
  content: '✓';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.7rem;
  font-weight: 700;
  background: none;
}

.quiz-option.wrong .quiz-radio {
  border-color: var(--danger);
  background: var(--danger);
}

.quiz-option.wrong .quiz-radio::after {
  content: '✕';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.7rem;
  font-weight: 700;
  background: none;
}

.quiz-feedback {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  margin-top: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  animation: fadeIn 0.3s ease;
}

.quiz-feedback.correct {
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.2);
  color: var(--success);
}

.quiz-feedback.wrong {
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: var(--danger);
}

.quiz-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 1.5rem;
}

/* Quiz Results */
.quiz-result {
  text-align: center;
  padding: 3rem 2rem;
  animation: fadeIn 0.5s ease;
}

.quiz-result .result-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
}

.quiz-result h3 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.quiz-result .result-score {
  font-size: 3rem;
  font-weight: 900;
  margin: 1rem 0;
}

.quiz-result.passed .result-score {
  color: var(--success);
}

.quiz-result.failed .result-score {
  color: var(--danger);
}

.quiz-result p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

/* --- CTA Section --- */
.cta-section {
  position: relative;
  overflow: hidden;
}

.cta-box {
  padding: 4rem 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.08) 0%, rgba(59, 130, 246, 0.05) 100%);
  border: 1px solid rgba(16, 185, 129, 0.15);
  border-radius: var(--radius-xl);
}

.cta-box h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.cta-box p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* --- Footer --- */
.footer {
  padding: 3rem 0 2rem;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-brand {
  display: flex;
  align-items: center;
}

.footer-logo-img {
  height: 30px;
  width: auto;
  filter: brightness(0) invert(1);
  opacity: 0.5;
  transition: opacity var(--transition-fast);
}

.footer-brand:hover .footer-logo-img {
  opacity: 0.75;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--primary-light);
}

.footer-sep {
  color: var(--text-dim);
  font-size: 0.85rem;
}

.footer-text {
  font-size: 0.85rem;
  color: var(--text-dim);
}

.footer-text a {
  color: var(--text-muted);
}

/* --- Legal Pages (Impressum/Datenschutz) --- */
.legal-content {
  max-width: 800px;
  margin: 0 auto;
}

.legal-content h1 {
  margin-bottom: 2rem;
}

.legal-content h2 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.legal-content h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.legal-content p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 1rem;
}

.legal-content ul {
  list-style: none;
  padding: 0;
  margin-bottom: 1rem;
}

.legal-content ul li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 0.25rem;
}

.legal-content ul li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--primary);
}

.legal-content a {
  color: var(--primary-light);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.legal-content a:hover {
  color: var(--primary);
}

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Video placeholder --- */
.video-placeholder {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-base);
}

.video-placeholder:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
}

.play-btn {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.15);
  border: 2px solid rgba(16, 185, 129, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  transition: all var(--transition-base);
}

.video-placeholder:hover .play-btn {
  background: rgba(16, 185, 129, 0.25);
  transform: scale(1.05);
}

.play-btn svg {
  width: 28px;
  height: 28px;
  fill: var(--primary-light);
  margin-left: 4px;
}

.video-placeholder span {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
}

.video-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

.video-item {
  padding: 1.25rem;
  text-align: center;
}

.video-item .v-num {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.video-item h5 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  color: var(--text);
}

.video-item p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* --- Confetti --- */
.confetti-container {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
}

.confetti {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  animation: confettiFall 3s ease-in forwards;
}

@keyframes confettiFall {
  0% {
    opacity: 1;
    transform: translateY(-20px) rotate(0deg);
  }
  100% {
    opacity: 0;
    transform: translateY(100vh) rotate(720deg);
  }
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .section {
    padding: 4rem 0;
  }

  .nav-links,
  .nav-cta .btn {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  /* Mobile menu */
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
    gap: 0.75rem;
  }

  .nav-links.open a {
    padding: 0.5rem 0;
    font-size: 1rem;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero-stats {
    gap: 1.5rem;
    flex-wrap: wrap;
  }

  .steps-grid {
    grid-template-columns: 1fr;
  }

  .step-card:not(:last-child)::after {
    content: '↓';
    position: static;
    display: block;
    text-align: center;
    margin-top: 0.5rem;
  }

  .areas-grid,
  .areas-grid-3 {
    grid-template-columns: 1fr;
  }

  .module-grid {
    grid-template-columns: 1fr;
  }

  .overview-grid {
    grid-template-columns: 1fr;
  }

  .video-list {
    grid-template-columns: 1fr;
  }

  .demo-header {
    flex-direction: column;
    text-align: center;
    padding: 1.25rem;
  }

  .tab-nav {
    gap: 0;
  }

  .tab-btn {
    padding: 0.75rem 1rem;
    font-size: 0.85rem;
  }

  .cta-box {
    padding: 3rem 1.5rem;
  }

  .footer-inner {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-stats {
    flex-direction: column;
    gap: 1rem;
  }
}