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

:root {
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --primary-color: #667eea;
  --secondary-color: #764ba2;
  --text-dark: #1a1a1a;
  --text-light: #666666;
  --bg-light: #f8f9fa;
  --bg-white: #ffffff;
  --border-color: #e1e4e8;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.15);
  --border-radius: 12px;
  --transition: all 0.3s ease;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: var(--text-dark);
  line-height: 1.6;
  background-color: var(--bg-white);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header Styles */
.header {
  background: var(--primary-gradient);
  color: white;
  padding: 60px 0 40px;
  text-align: center;
}

.header-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-icon {
  width: 60px;
  height: 60px;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.2));
}

.logo h1 {
  font-size: 42px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.tagline {
  font-size: 18px;
  opacity: 0.95;
  font-weight: 300;
}

/* Hero Section */
.hero {
  padding: 80px 0;
  text-align: center;
  background-color: var(--bg-white);
}

.hero-title {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-dark);
  letter-spacing: -1px;
}

.hero-description {
  font-size: 20px;
  color: var(--text-light);
  max-width: 800px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-badges {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 40px;
}

.badge {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  background: var(--bg-light);
  border-radius: 50px;
  font-weight: 500;
}

.badge-icon {
  font-size: 24px;
}

.badge-text {
  font-size: 15px;
}

/* Section Styles */
section {
  padding: 80px 0;
}

.section-title {
  font-size: 40px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 50px;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

/* Features Section */
.features {
  background-color: var(--bg-light);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.feature-card {
  background: var(--bg-white);
  padding: 40px 30px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  text-align: center;
}

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

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

.feature-card h3 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.feature-card p {
  color: var(--text-light);
  font-size: 16px;
  line-height: 1.6;
}

/* Vision Tests Section */
.vision-tests {
  background: var(--bg-white);
}

.tests-list {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.test-item {
  display: flex;
  gap: 30px;
  padding: 30px;
  background: var(--bg-light);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.test-item:hover {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
  transform: translateX(5px);
}

.test-number {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary-color);
  min-width: 60px;
}

.test-content h3 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-dark);
}

.test-content p {
  color: var(--text-light);
  font-size: 16px;
}

/* Premium Section */
.premium {
  background: var(--primary-gradient);
  color: white;
}

.premium .section-title {
  color: white;
}

.premium-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.premium-description {
  font-size: 20px;
  margin-bottom: 40px;
  opacity: 0.95;
}

.premium-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  text-align: left;
  list-style: none;
}

.premium-features li {
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--border-radius);
  font-size: 16px;
  backdrop-filter: blur(10px);
}

.premium-features li::before {
  content: '✓';
  margin-right: 12px;
  font-weight: bold;
  color: #fff;
}

/* About Section */
.about {
  background: var(--bg-white);
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  font-size: 18px;
  line-height: 1.8;
}

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

.disclaimer {
  margin-top: 40px;
  padding: 25px;
  background: #fff3cd;
  border-left: 4px solid #ffc107;
  border-radius: var(--border-radius);
  color: #856404;
  line-height: 1.7;
}

.disclaimer strong {
  display: block;
  margin-bottom: 8px;
  font-size: 18px;
}

/* Privacy & Support Section */
.privacy-support {
  background: var(--bg-light);
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.support-card {
  background: var(--bg-white);
  padding: 40px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.support-card h3 {
  font-size: 24px;
  margin-bottom: 15px;
  color: var(--text-dark);
}

.support-card p {
  color: var(--text-light);
  margin-bottom: 25px;
  line-height: 1.7;
}

.link-btn {
  display: inline-block;
  padding: 12px 28px;
  background: var(--primary-gradient);
  color: white;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 600;
  transition: var(--transition);
}

.link-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* FAQ Section */
.faq {
  background: var(--bg-white);
}

.faq-list {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.faq-item {
  padding: 30px;
  background: var(--bg-light);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--primary-color);
}

.faq-item h3 {
  font-size: 20px;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.faq-item p {
  color: var(--text-light);
  font-size: 16px;
  line-height: 1.7;
}

/* Footer */
.footer {
  background: var(--text-dark);
  color: white;
  padding: 60px 0 30px;
  text-align: center;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 24px;
  font-weight: 600;
}

.logo-icon-small {
  width: 40px;
  height: 40px;
}

.footer-tagline {
  font-size: 16px;
  opacity: 0.8;
  max-width: 500px;
  line-height: 1.6;
}

.footer-links {
  display: flex;
  gap: 15px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  color: white;
  text-decoration: none;
  opacity: 0.8;
  transition: var(--transition);
}

.footer-links a:hover {
  opacity: 1;
}

.footer-links span {
  opacity: 0.5;
}

.footer-copyright {
  font-size: 14px;
  opacity: 0.6;
  margin-top: 20px;
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero-title {
    font-size: 36px;
  }

  .hero-description {
    font-size: 18px;
  }

  .section-title {
    font-size: 32px;
  }

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

  .test-item {
    flex-direction: column;
    gap: 15px;
  }

  .test-number {
    font-size: 28px;
  }

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

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

  .logo h1 {
    font-size: 32px;
  }

  .logo-icon {
    width: 50px;
    height: 50px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 28px;
  }

  .section-title {
    font-size: 26px;
  }

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