:root {
  --primary: #6B46C1;
  --primary-dark: #553C9A;
  --primary-light: #9333EA;
  --secondary: #EC4899;
  --background: #FAFAFA;
  --surface: #FFFFFF;
  --text: #1F2937;
  --text-light: #6B7280;
  --border: #E5E7EB;
  --success: #10B981;
  --info: #3B82F6;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--background);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.landing-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  min-height: 100vh;
}

/* Header */
.landing-header {
  text-align: center;
  padding: 60px 20px;
  background: linear-gradient(135deg, rgba(107, 70, 193, 0.05), rgba(236, 72, 153, 0.05));
  border-radius: 20px;
  margin-bottom: 60px;
}

.landing-header h1 {
  font-size: 48px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
}

.tagline {
  font-size: 20px;
  color: var(--text-light);
}

/* Tests Grid */
.tests-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
  margin-bottom: 80px;
}

.test-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  position: relative;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.test-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.test-card.featured {
  border-color: var(--primary);
  background: linear-gradient(to bottom right, rgba(107, 70, 193, 0.05), rgba(147, 51, 234, 0.05));
}

.test-icon {
  font-size: 48px;
  margin-bottom: 20px;
}

.test-card h2 {
  font-size: 24px;
  margin-bottom: 16px;
  color: var(--primary);
}

.test-description {
  color: var(--text-light);
  margin-bottom: 24px;
  flex: 1;
  line-height: 1.7;
}

.test-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
  font-size: 14px;
  color: var(--text-light);
}

.test-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.test-link {
  display: inline-block;
  padding: 12px 24px;
  background: var(--primary);
  color: white;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 500;
  text-align: center;
  transition: all 0.2s;
}

.test-link:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.test-link.coming-soon {
  background: var(--border);
  color: var(--text-light);
  cursor: not-allowed;
}

.test-link.coming-soon:hover {
  transform: none;
  background: var(--border);
}

.badge-new {
  position: absolute;
  top: 20px;
  right: 20px;
  background: var(--success);
  color: white;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
}

/* Info Section */
.info-section {
  background: var(--surface);
  border-radius: 20px;
  padding: 60px 40px;
  margin-bottom: 60px;
}

.info-section h2 {
  text-align: center;
  font-size: 32px;
  color: var(--primary);
  margin-bottom: 40px;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

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

.info-card h3 {
  font-size: 20px;
  margin-bottom: 12px;
  color: var(--primary);
}

.info-card p {
  color: var(--text-light);
  line-height: 1.7;
}

/* Footer */
.landing-footer {
  text-align: center;
  padding: 40px 20px;
  border-top: 1px solid var(--border);
  margin-top: 80px;
}

.landing-footer p {
  color: var(--text-light);
  margin-bottom: 20px;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}

.footer-nav a {
  color: var(--text-light);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* Mobile Responsive */
@media (max-width: 768px) {
  .landing-header h1 {
    font-size: 36px;
  }
  
  .tagline {
    font-size: 18px;
  }
  
  .tests-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .test-card {
    padding: 24px;
  }
  
  .info-section {
    padding: 40px 20px;
  }
  
  .info-section h2 {
    font-size: 28px;
  }
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.test-card {
  animation: fadeIn 0.6s ease backwards;
}

.test-card:nth-child(1) { animation-delay: 0.1s; }
.test-card:nth-child(2) { animation-delay: 0.2s; }
.test-card:nth-child(3) { animation-delay: 0.3s; }
.test-card:nth-child(4) { animation-delay: 0.4s; }
.test-card:nth-child(5) { animation-delay: 0.5s; }
.test-card:nth-child(6) { animation-delay: 0.6s; }
.test-card:nth-child(7) { animation-delay: 0.7s; }