:root {
  /* Main Brand Colors */
  --safeqr-primary: #2C3E50;
  --safeqr-primary-dark: #1A252F;
  --safeqr-primary-light: #34495E;

  /* Accessibility Enhanced Colors */
  --focus-ring: 0 0 0 3px rgba(44,62,80,.35);
  --safeqr-safe-a11y: #27AE60;
  --safeqr-danger-a11y: #E74C3C;

  /* Secondary Colors */
  --safeqr-bg: #ECF0F1;
  --safeqr-text: #2C3E50;
  --safeqr-text-light: #7F8C8D;
  --safeqr-white: #FFFFFF;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;

  /* Typography */
  --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Language Selector */
.language-selector {
  position: fixed;
  top: var(--spacing-md);
  right: var(--spacing-md);
  z-index: 1000;
}

.language-selector select {
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid var(--safeqr-primary);
  border-radius: 4px;
  background: var(--safeqr-white);
  color: var(--safeqr-text);
  font-size: 14px;
  cursor: pointer;
}

.language-selector select:focus {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* Hero Section */
.hero {
  padding: var(--spacing-xxl) 0;
  text-align: center;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.app-icon {
  width: 120px;
  height: 120px;
  margin-bottom: var(--spacing-lg);
  filter: drop-shadow(0 4px 6px rgba(0,0,0,0.1));
  animation: float 3s ease-in-out infinite;
  border-radius: 15%;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

.hero h1 {
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--safeqr-primary);
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--safeqr-text-light);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}


/* CTA Buttons */
.cta-buttons {
  margin: var(--spacing-lg) 0;
}

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.125rem;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

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

.btn-primary:hover {
  background: var(--safeqr-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(44,62,80,0.3);
}

.btn-primary:focus {
  outline: none;
  box-shadow: var(--focus-ring);
}

.store-badges {
  margin-top: var(--spacing-md);
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  align-items: center;
}

.store-badge img {
  height: 48px;
  width: auto;
}

.disclaimer {
  font-size: 0.875rem;
  color: var(--safeqr-text-light);
  margin-top: var(--spacing-md);
}

/* Trust Indicators */
.trust-indicators {
  padding: var(--spacing-xl) 0;
  background: var(--safeqr-white);
}

.indicators-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.indicator {
  text-align: center;
  padding: var(--spacing-md);
}

.indicator-icon {
  font-size: 2.5rem;
  display: block;
  margin-bottom: var(--spacing-sm);
}

.indicator h3 {
  font-size: 1rem;
  color: var(--safeqr-text);
  font-weight: 500;
}

/* Problem & Solution */
.problem-solution {
  padding: var(--spacing-xl) 0;
  background: var(--safeqr-bg);
}

.problem-solution h2 {
  font-size: 2rem;
  color: var(--safeqr-primary);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.problems {
  max-width: 800px;
  margin: 0 auto var(--spacing-xl);
}

.problem-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  background: var(--safeqr-white);
  padding: var(--spacing-md);
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.problem-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.problem-item h3 {
  font-size: 1.125rem;
  color: var(--safeqr-text);
  margin-bottom: var(--spacing-xs);
}

.problem-item p {
  color: var(--safeqr-text-light);
  font-size: 0.875rem;
}

.solution {
  max-width: 1000px;
  margin: 0 auto;
}

.solution-flow {
  display: flex;
  justify-content: space-around;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.flow-step {
  background: var(--safeqr-white);
  padding: var(--spacing-md);
  border-radius: 8px;
  text-align: center;
  flex: 1;
  min-width: 200px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.step-number {
  width: 40px;
  height: 40px;
  background: var(--safeqr-primary);
  color: var(--safeqr-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-sm);
  font-weight: bold;
}

.flow-step h4 {
  font-size: 1rem;
  color: var(--safeqr-text);
}

.flow-arrow {
  font-size: 2rem;
  color: var(--safeqr-primary);
  flex-shrink: 0;
}

/* Features */
.features {
  padding: var(--spacing-xl) 0;
  background: var(--safeqr-white);
}

.features h2 {
  font-size: 2rem;
  color: var(--safeqr-primary);
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.feature-card {
  background: var(--safeqr-bg);
  padding: var(--spacing-lg);
  border-radius: 12px;
  text-align: center;
  transition: transform 0.3s ease;
  position: relative;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.feature-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: var(--spacing-md);
}

.feature-card h3 {
  font-size: 1.25rem;
  color: var(--safeqr-text);
  margin-bottom: var(--spacing-sm);
}

.feature-card p {
  color: var(--safeqr-text-light);
  font-size: 0.875rem;
}

.feature-badge {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  background: var(--safeqr-primary);
  color: var(--safeqr-white);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
}

/* Pricing */
.pricing {
  padding: var(--spacing-xl) 0;
  background: var(--safeqr-bg);
}

.pricing h2 {
  font-size: 2rem;
  color: var(--safeqr-primary);
  text-align: center;
  margin-bottom: var(--spacing-sm);
}

.pricing-subtitle {
  text-align: center;
  color: var(--safeqr-text-light);
  margin-bottom: var(--spacing-xl);
}

.pricing-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  max-width: 800px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--safeqr-white);
  padding: var(--spacing-xl);
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  text-align: center;
  position: relative;
}

.pricing-card.featured {
  transform: scale(1.05);
  box-shadow: 0 10px 30px rgba(44,62,80,0.2);
}

.pricing-card .badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--safeqr-danger-a11y);
  color: var(--safeqr-white);
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
}

.pricing-card h3 {
  font-size: 1.5rem;
  color: var(--safeqr-text);
  margin-bottom: var(--spacing-md);
}

.price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  margin-bottom: var(--spacing-sm);
}

.currency {
  font-size: 1.5rem;
  color: var(--safeqr-text-light);
}

.amount {
  font-size: 3rem;
  font-weight: 700;
  color: var(--safeqr-primary);
  margin: 0 4px;
}

.period {
  color: var(--safeqr-text-light);
}

.annual-price {
  color: var(--safeqr-safe-a11y);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-lg);
}

.features-list {
  list-style: none;
  text-align: left;
  margin: var(--spacing-lg) 0;
}

.features-list li {
  padding: var(--spacing-sm) 0;
  color: var(--safeqr-text);
  font-size: 0.875rem;
}

.pricing-toggle {
  display: flex;
  background: var(--safeqr-bg);
  border-radius: 8px;
  padding: 4px;
  margin-bottom: var(--spacing-md);
  gap: 2px;
}

.toggle-btn {
  flex: 1;
  padding: var(--spacing-xs) var(--spacing-sm);
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--safeqr-text-light);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}

.toggle-btn.active {
  background: var(--safeqr-primary);
  color: var(--safeqr-white);
  box-shadow: 0 2px 4px rgba(44,62,80,0.2);
}

.toggle-btn:hover:not(.active) {
  background: var(--safeqr-white);
  color: var(--safeqr-text);
}

.savings {
  color: var(--safeqr-safe-a11y);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-lg);
  font-weight: 500;
}

.pricing-note {
  text-align: center;
  color: var(--safeqr-text-light);
  font-size: 0.875rem;
  margin-top: var(--spacing-lg);
}

/* Use Cases */
.use-cases {
  padding: var(--spacing-xl) 0;
  background: var(--safeqr-white);
}

.use-cases h2 {
  font-size: 2rem;
  color: var(--safeqr-primary);
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.use-case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.use-case {
  padding: var(--spacing-lg);
  background: var(--safeqr-bg);
  border-radius: 8px;
}

.use-case h3 {
  font-size: 1.25rem;
  color: var(--safeqr-primary);
  margin-bottom: var(--spacing-sm);
}

.use-case p {
  color: var(--safeqr-text-light);
  line-height: 1.6;
}

/* FAQ */
.faq {
  padding: var(--spacing-xl) 0;
  background: var(--safeqr-bg);
}

.faq h2 {
  font-size: 2rem;
  color: var(--safeqr-primary);
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--safeqr-white);
  margin-bottom: var(--spacing-md);
  border-radius: 8px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: var(--spacing-md);
  background: var(--safeqr-white);
  border: none;
  text-align: left;
  font-size: 1.125rem;
  color: var(--safeqr-text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.3s ease;
}

.faq-question:hover {
  background: var(--safeqr-bg);
}

.faq-question:focus {
  outline: none;
  box-shadow: var(--focus-ring);
}

.faq-icon {
  font-size: 1.5rem;
  transition: transform 0.3s ease;
}

.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer.active {
  max-height: 500px;
}

.faq-answer p {
  padding: 0 var(--spacing-md) var(--spacing-md);
  color: var(--safeqr-text-light);
  line-height: 1.6;
}

/* Footer */
.footer {
  background: var(--safeqr-primary);
  color: var(--safeqr-white);
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 600;
  font-size: 1.125rem;
}

.footer-links {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

.footer-links a {
  color: var(--safeqr-white);
  text-decoration: none;
  transition: opacity 0.3s ease;
}

.footer-links a:hover {
  opacity: 0.8;
}

.copyright {
  font-size: 0.875rem;
  opacity: 0.8;
}

/* Responsive */
@media (max-width: 768px) {
  .flow-arrow {
    transform: rotate(90deg);
  }

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

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

  .footer-content {
    flex-direction: column;
  }

  .store-badges {
    flex-direction: column;
  }
}