/* ============================================
   GLEITSICHT-TOOL LANDINGPAGE
   Modern, Clean, Professional
   ============================================ */

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #3b82f6;
  --secondary: #0f172a;
  --accent: #06b6d4;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --white: #ffffff;
  /* System-Font-Stack - keine externen Fonts, DSGVO-konform */
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--gray-700);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

/* ============================================
   CONTAINER & LAYOUT
   ============================================ */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section-white {
  background: var(--white);
}

.section-gray {
  background: var(--gray-50);
}

.section-dark {
  background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
  color: var(--white);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 16px;
}

.section-dark .section-header h2 {
  color: var(--white);
}

.section-header p {
  font-size: 1.125rem;
  color: var(--gray-500);
}

.section-dark .section-header p {
  color: var(--gray-400);
}

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all 0.3s ease;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
  padding: 12px 0;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  text-decoration: none;
  transition: color 0.3s ease;
}

.navbar.scrolled .logo {
  color: var(--gray-900);
}

.logo-icon {
  font-size: 1.75rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.3s ease;
}

.navbar.scrolled .nav-links a {
  color:black;
}

.nav-links a:hover {
  color: var(--white);
}

.navbar.scrolled .nav-links a:hover {
  color: var(--primary);
}

/* Hamburger Menu Button */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 30px;
  height: 30px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 3px;
  background: var(--white);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.navbar.scrolled .nav-toggle span {
  background: var(--gray-700);
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--white);
  color: var(--gray-700);
  border-color: var(--gray-200);
}

.btn-secondary:hover {
  background: var(--gray-50);
  border-color: var(--gray-300);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.3);
}

.navbar.scrolled .btn-outline {
  color: var(--primary);
  border-color: var(--primary);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
}

.navbar.scrolled .btn-outline {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

.navbar.scrolled .btn-outline:hover {
  background: white;
  border-color: var(--primary-dark);
  color: var(--white);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1rem;
}

.btn-block {
  width: 100%;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  padding: 140px 0 120px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-text {
  color: var(--white);
}

.badge {
  display: inline-block;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 1.25rem;
  line-height: 1.7;
  opacity: 0.9;
  margin-bottom: 32px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  gap: 40px;
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
}

.stat-label {
  font-size: 0.875rem;
  opacity: 0.7;
}

/* Browser Mockup */
.hero-visual {
  position: relative;
}

.browser-mockup {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
  transition: transform 0.5s ease;
}

.browser-mockup:hover {
  transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.browser-header {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  background: var(--gray-100);
  border-bottom: 1px solid var(--gray-200);
}

.browser-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gray-300);
}

.browser-dot:first-child { background: #ef4444; }
.browser-dot:nth-child(2) { background: #f59e0b; }
.browser-dot:last-child { background: #10b981; }

.browser-content {
  aspect-ratio: 16/10;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
}

.browser-content img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.placeholder-preview {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--gray-400);
}

.glasses-icon {
  font-size: 4rem;
}

/* Hero Wave */
.hero-wave {
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
}

.hero-wave svg {
  display: block;
  width: 100%;
}

/* ============================================
   PROBLEM/SOLUTION
   ============================================ */
.problem-solution {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
}

.problem, .solution {
  flex: 1;
  max-width: 400px;
  text-align: center;
  padding: 40px;
}

.icon-box {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.5rem;
}

.icon-red {
  background: #fef2f2;
  color: var(--danger);
}

.icon-green {
  background: #f0fdf4;
  color: var(--success);
}

.problem h3, .solution h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
  color: var(--gray-900);
}

.arrow {
  font-size: 2rem;
  color: var(--gray-300);
}

/* ============================================
   FEATURES
   ============================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.feature-card {
  background: var(--white);
  padding: 32px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.125rem;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--gray-500);
}

/* ============================================
   DEMO SECTION
   ============================================ */
.demo-container {
  
  margin: 0 auto;
}

.demo-wrapper {
  background: var(--gray-900);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  margin-bottom: 30px;
}

.demo-placeholder {
  aspect-ratio: 16/9;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--gray-400);
  font-size: 1.125rem;
}

.demo-placeholder .demo-hint {
  font-size: 0.875rem;
  opacity: 0.6;
}

.demo-info {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.demo-info-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--gray-600);
}

.checkmark {
  width: 24px;
  height: 24px;
  background: var(--success);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
}

/* ============================================
   STEPS / HOW IT WORKS
   ============================================ */
.steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 20px;
}

.step {
  flex: 1;
  max-width: 280px;
  text-align: center;
  padding: 30px;
}

.step-number {
  width: 60px;
  height: 60px;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto 20px;
}

.step h3 {
  font-size: 1.25rem;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.step p {
  color: var(--gray-500);
}

.step-connector {
  width: 60px;
  height: 2px;
  background: var(--gray-200);
  margin-top: 50px;
}

/* ============================================
   PRICING
   ============================================ */
.pricing-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  max-width: 1000px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--white);
  border: 2px solid var(--gray-100);
  border-radius: var(--radius-xl);
  padding: 40px 30px;
  text-align: center;
  position: relative;
  transition: all 0.3s ease;
}

.pricing-card:hover {
  border-color: var(--gray-200);
  box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
  border-color: var(--primary);
  transform: scale(1.05);
  box-shadow: var(--shadow-xl);
}

.popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: var(--white);
  padding: 6px 20px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pricing-header {
  margin-bottom: 30px;
}

.pricing-header h3 {
  font-size: 1.25rem;
  color: var(--gray-900);
  margin-bottom: 16px;
}

.price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.currency {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--gray-500);
}

.amount {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1;
}

.period {
  font-size: 1rem;
  color: var(--gray-500);
}

.pricing-features {
  list-style: none;
  margin-bottom: 30px;
}

.pricing-features li {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 0;
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-600);
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-features .check {
  color: var(--success);
  font-weight: 700;
}

/* ============================================
   CONTACT
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info h2 {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.contact-info > p {
  font-size: 1.125rem;
  color: var(--gray-400);
  margin-bottom: 40px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-icon {
  font-size: 1.5rem;
}

.contact-item strong {
  display: block;
  margin-bottom: 4px;
  color: var(--gray-300);
}

.contact-item a,
.contact-item span {
  color: var(--gray-400);
  text-decoration: none;
}

.contact-item a:hover {
  color: var(--white);
}

.contact-form-container {
  background: var(--white);
  padding: 40px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: var(--font);
  transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

/* Checkbox Styling */
.checkbox-group {
  margin-top: 10px;
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--gray-600);
  line-height: 1.5;
}

.checkbox-label input[type="checkbox"] {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  flex-shrink: 0;
  cursor: pointer;
  accent-color: var(--primary);
}

.checkbox-label a {
  color: var(--primary);
  text-decoration: underline;
}

.checkbox-label a:hover {
  color: var(--primary-dark);
}

/* ============================================
   LEGAL PAGES (Impressum, Datenschutz)
   ============================================ */
.legal-content {
  max-width: 800px;
  margin: 0 auto;
}

.legal-content h1 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 40px;
}

.legal-content h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-top: 32px;
  margin-bottom: 16px;
}

.legal-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-top: 24px;
  margin-bottom: 12px;
}

.legal-content p {
  margin-bottom: 16px;
  color: var(--gray-600);
}

.legal-content ul {
  margin-bottom: 16px;
  padding-left: 24px;
  color: var(--gray-600);
}

.legal-content li {
  margin-bottom: 8px;
}

.legal-content a {
  color: var(--primary);
  text-decoration: none;
}

.legal-content a:hover {
  text-decoration: underline;
}

.legal-links {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--gray-200);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding: 40px 0;
  border-top: 1px solid var(--gray-800);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--white);
}

.footer-links {
  display: flex;
  gap: 30px;
}

.footer-links a {
  color: var(--gray-400);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

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

.footer-copy {
  font-size: 0.875rem;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero h1 {
    font-size: 2.75rem;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .hero-visual {
    max-width: 500px;
  
  }

  .browser-mockup {
    transform: none;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-container {
    grid-template-columns: 1fr;
    max-width: 400px;
  }

  .pricing-card.featured {
    transform: none;
  }

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

@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }

  .section-header h2 {
    font-size: 2rem;
  }

  /* Mobile Navigation */
  .nav-toggle {
    display: flex;
  }

.contact-form-container {
  padding: 20px;}


  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--white);
    flex-direction: column;
    padding: 80px 30px 30px;
    gap: 0;
    box-shadow: -5px 0 20px rgba(0,0,0,0.1);
    transition: right 0.3s ease;
    z-index: 1000;
  }

  .nav-links.active {
    right: 0;
  }

  .nav-links a {
    color: var(--gray-700) !important;
    padding: 16px 0;
    border-bottom: 1px solid var(--gray-100);
    font-size: 1.1rem;
  }

  .nav-links a:hover {
    color: var(--primary) !important;
  }

  .nav-links .btn-outline {
    margin-top: 20px;
    text-align: center;
    background: var(--primary) !important;
    color: var(--white) !important;
    border-color: var(--primary) !important;
    border-radius: var(--radius);
    padding: 14px 24px;
  }

  .hero {
    padding: 120px 0 100px;
  }

  .hero h1 {
    font-size: 2.25rem;
  }

  .hero-subtitle {
    font-size: 1.1rem;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .hero-stats {
    flex-direction: column;
    gap: 20px;
  }

  .problem-solution {
    flex-direction: column;
  }

  .arrow {
    transform: rotate(90deg);
  }

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

  .steps {
    flex-direction: column;
    align-items: center;
  }

  .step-connector {
    width: 2px;
    height: 40px;
    margin: 0;
  }

  .demo-info {
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}