/* Google Chrome Download Landing Site - Original Design */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #4285f4;
  --primary-dark: #3367d6;
  --secondary: #34a853;
  --accent: #ea4335;
  --warning: #fbbc04;
  --dark: #202124;
  --gray: #5f6368;
  --light-gray: #f8f9fa;
  --border: #dadce0;
  --shadow: 0 2px 10px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--dark);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
}

/* Navigation */
.topnav {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
  height: 70px;
}

.brand {
  display: flex;
  align-items: center;
  font-size: 24px;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
  transition: transform 0.3s ease;
}

.brand:hover {
  transform: scale(1.05);
}

.brand svg {
  margin-right: 10px;
}

.navlist {
  display: flex;
  list-style: none;
  gap: 10px;
}

.navlist a {
  color: var(--gray);
  text-decoration: none;
  padding: 10px 20px;
  border-radius: 25px;
  transition: all 0.3s ease;
  font-weight: 500;
  position: relative;
  overflow: hidden;
}

.navlist a::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(66, 133, 244, 0.1), transparent);
  transition: left 0.5s ease;
  pointer-events: none;
}

.navlist a:hover::before {
  left: 100%;
}

.navlist a:hover {
  color: var(--primary);
  background: rgba(66, 133, 244, 0.1);
}

.navlist a.on {
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 15px rgba(66, 133, 244, 0.3);
}

.navlist a.on::before {
  display: none;
}

.navlist a.on:hover {
  background: var(--primary-dark);
  color: white;
}

/* Main Container */
.main-container {
  max-width: 1200px;
  margin: 40px auto;
  padding: 0 20px;
}

/* Hero Section */
.hero {
  background: white;
  border-radius: 20px;
  padding: 60px 40px;
  margin-bottom: 40px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(66, 133, 244, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

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

.hero-text h1 {
  font-size: 48px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 20px;
  line-height: 1.2;
}

.hero-text .subtitle {
  font-size: 20px;
  color: var(--gray);
  margin-bottom: 30px;
  line-height: 1.5;
}

.hero-buttons {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.btn {
  padding: 14px 28px;
  border: none;
  border-radius: 30px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 160px;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  box-shadow: 0 4px 15px rgba(66, 133, 244, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(66, 133, 244, 0.4);
}

.btn-secondary {
  background: white;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-secondary:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
}

.btn svg {
  margin-right: 8px;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.browser-mockup {
  width: 100%;
  max-width: 400px;
  height: 280px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 15px;
  padding: 20px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
  position: relative;
  animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.02); }
}

.browser-header {
  display: flex;
  align-items: center;
  margin-bottom: 15px;
}

.browser-dots {
  display: flex;
  gap: 8px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot-red { background: #ff5f57; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #28ca42; }

.browser-address {
  flex: 1;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 20px;
  padding: 8px 15px;
  margin: 0 15px;
  font-size: 14px;
  color: var(--gray);
}

.browser-content {
  background: white;
  border-radius: 10px;
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--primary);
  font-weight: 600;
}

/* Features Section */
.features {
  background: white;
  border-radius: 20px;
  padding: 60px 40px;
  margin-bottom: 40px;
  box-shadow: var(--shadow-lg);
}

.section-title {
  text-align: center;
  font-size: 36px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 50px;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 2px;
}

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

.feature-card {
  background: var(--light-gray);
  padding: 30px;
  border-radius: 15px;
  text-align: center;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

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

.feature-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.feature-card h3 {
  font-size: 22px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 15px;
}

.feature-card p {
  color: var(--gray);
  line-height: 1.6;
}

/* Download Section */
.download-section {
  background: white;
  border-radius: 20px;
  padding: 60px 40px;
  margin-bottom: 40px;
  box-shadow: var(--shadow-lg);
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
  margin-top: 40px;
}

.platform-card {
  background: var(--light-gray);
  padding: 30px;
  border-radius: 15px;
  text-align: center;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.platform-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--primary);
}

.platform-icon {
  width: 50px;
  height: 50px;
  margin: 0 auto 15px;
  color: var(--primary);
}

.platform-card h4 {
  font-size: 18px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 10px;
}

.platform-card p {
  color: var(--gray);
  font-size: 14px;
  margin-bottom: 20px;
}

/* FAQ Section */
.faq-section {
  background: white;
  border-radius: 20px;
  padding: 60px 40px;
  margin-bottom: 40px;
  box-shadow: var(--shadow-lg);
}

.faq-item {
  background: var(--light-gray);
  margin-bottom: 15px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.faq-item:hover {
  box-shadow: var(--shadow);
}

.faq-question {
  padding: 20px 25px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: var(--dark);
  transition: background 0.3s ease;
}

.faq-question:hover {
  background: rgba(66, 133, 244, 0.05);
}

.faq-chevron {
  transition: transform 0.3s ease;
  color: var(--primary);
}

.faq-item.open .faq-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 25px;
  max-height: 0;
  overflow: hidden;
  transition: all 0.3s ease;
  color: var(--gray);
  line-height: 1.6;
}

.faq-item.open .faq-answer {
  padding: 0 25px 20px;
  max-height: 500px;
}

/* Testimonials */
.testimonials {
  background: white;
  border-radius: 20px;
  padding: 60px 40px;
  margin-bottom: 40px;
  box-shadow: var(--shadow-lg);
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.testimonial-card {
  background: var(--light-gray);
  padding: 30px;
  border-radius: 15px;
  position: relative;
  border-left: 4px solid var(--primary);
}

.testimonial-text {
  font-style: italic;
  color: var(--gray);
  margin-bottom: 20px;
  line-height: 1.6;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 15px;
}

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
}

.author-info h5 {
  font-size: 16px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 2px;
}

.author-info p {
  font-size: 14px;
  color: var(--gray);
}

/* Comparison Table */
.comparison-table {
  background: white;
  border-radius: 20px;
  padding: 60px 40px;
  margin-bottom: 40px;
  box-shadow: var(--shadow-lg);
  overflow-x: auto;
}

.table-wrapper {
  overflow-x: auto;
  margin-top: 40px;
}

.comparison-table table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}

.comparison-table th,
.comparison-table td {
  padding: 15px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.comparison-table th {
  background: var(--light-gray);
  font-weight: 600;
  color: var(--dark);
}

.comparison-table tr:hover {
  background: rgba(66, 133, 244, 0.05);
}

.check-icon {
  color: var(--secondary);
}

.cross-icon {
  color: var(--accent);
}

/* CTA Banner */
.cta-banner {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  padding: 60px 40px;
  border-radius: 20px;
  text-align: center;
  margin-bottom: 40px;
  box-shadow: var(--shadow-lg);
}

.cta-banner h2 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 20px;
}

.cta-banner p {
  font-size: 18px;
  margin-bottom: 30px;
  opacity: 0.9;
}

.btn-white {
  background: white;
  color: var(--primary);
  font-size: 18px;
  padding: 16px 32px;
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

/* Footer */
.site-footer {
  background: white;
  padding: 40px;
  border-radius: 20px;
  text-align: center;
  box-shadow: var(--shadow-lg);
  margin-bottom: 40px;
}

.footer-content {
  color: var(--gray);
  line-height: 1.8;
}

.footer-content .security-line {
  color: var(--secondary);
  font-weight: 600;
  margin-bottom: 15px;
  font-size: 16px;
}

.footer-content .copyright {
  font-size: 14px;
}

/* Loading Animation */
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-container {
    flex-direction: column;
    height: auto;
    padding: 15px 20px;
  }
  
  .navlist {
    margin-top: 15px;
  }
  
  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .hero-text h1 {
    font-size: 36px;
  }
  
  .hero {
    padding: 40px 25px;
  }
  
  .features,
  .download-section,
  .faq-section,
  .testimonials,
  .comparison-table,
  .cta-banner,
  .site-footer {
    padding: 40px 25px;
  }
  
  .section-title {
    font-size: 28px;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .btn {
    min-width: 140px;
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  .hero-text h1 {
    font-size: 28px;
  }
  
  .hero-text .subtitle {
    font-size: 16px;
  }
  
  .platform-grid,
  .feature-grid,
  .testimonial-grid {
    grid-template-columns: 1fr;
  }
  
  .navlist {
    flex-wrap: wrap;
    justify-content: center;
  }
}