@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --primary-dark: #0B1426;
  --primary-blue: #00D4FF;
  --accent-mint: #00FFB7;
  --accent-gold: #FFD700;
  --gradient-primary: linear-gradient(135deg, #0B1426 0%, #1a2951 50%, #2a4575 100%);
  --gradient-accent: linear-gradient(135deg, #00D4FF 0%, #00FFB7 100%);
  --gradient-hero: linear-gradient(135deg, #0B1426 0%, #1e3a8a 50%, #3b82f6 100%);
  --text-primary: #ffffff;
  --text-secondary: #94a3b8;
  --text-accent: #e2e8f0;
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--gradient-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Animated background particles */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(0, 255, 183, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 80%, rgba(255, 215, 0, 0.05) 0%, transparent 50%);
  animation: float 20s ease-in-out infinite;
  pointer-events: none;
  z-index: -1;
}

@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  33% { transform: translateY(-20px) rotate(1deg); }
  66% { transform: translateY(10px) rotate(-1deg); }
}

header {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 3rem;
  align-items: center;
}

nav ul li a {
  text-decoration: none;
  color: var(--text-accent);
  font-weight: 500;
  font-size: 1.1rem;
  padding: 0.5rem 1.5rem;
  border-radius: 50px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  background: transparent;
  border: 1px solid transparent;
}

nav ul li a::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-accent);
  opacity: 0;
  transition: all 0.3s ease;
  z-index: -1;
  border-radius: inherit;
  transform: scale(0.8);
}

nav ul li a:hover,
nav ul li a:focus {
  color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(0, 212, 255, 0.3);
  border-color: var(--primary-blue);
}

nav ul li a:hover::before,
nav ul li a:focus::before {
  opacity: 1;
  transform: scale(1);
}

main {
  padding: 0;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 4rem 2rem;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
  animation: rotate 30s linear infinite;
  z-index: 1;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hero-graphic {
  width: 300px;
  height: 300px;
  margin: 0 auto 2rem;
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Network Visualization */
.hero-graphic::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  border: 2px solid var(--primary-blue);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite alternate;
}

.hero-graphic::after {
  content: '';
  position: absolute;
  width: 80%;
  height: 80%;
  border: 1px solid var(--accent-mint);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite alternate-reverse;
}

@keyframes pulse {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  100% {
    transform: scale(1.1);
    opacity: 0.7;
  }
}

/* Create network nodes */
.hero-graphic {
  background: radial-gradient(circle at center, var(--primary-blue) 2px, transparent 2px),
              radial-gradient(circle at 25% 25%, var(--accent-mint) 1px, transparent 1px),
              radial-gradient(circle at 75% 25%, var(--accent-gold) 1px, transparent 1px),
              radial-gradient(circle at 25% 75%, var(--accent-mint) 1px, transparent 1px),
              radial-gradient(circle at 75% 75%, var(--primary-blue) 1px, transparent 1px),
              radial-gradient(circle at 50% 15%, var(--accent-mint) 1px, transparent 1px),
              radial-gradient(circle at 15% 50%, var(--accent-gold) 1px, transparent 1px),
              radial-gradient(circle at 85% 50%, var(--primary-blue) 1px, transparent 1px),
              radial-gradient(circle at 50% 85%, var(--accent-mint) 1px, transparent 1px);
  background-size: 100% 100%;
  filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.5));
}

.tagline {
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--text-accent);
  margin-top: 1rem;
  position: relative;
  z-index: 2;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
  letter-spacing: 0.5px;
}

/* Content Sections */
.intro {
  padding: 4rem 2rem;
  text-align: center;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
}

.intro h1 {
  font-size: 3.5rem;
  font-weight: 700;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
  text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.intro h2 {
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.intro p {
  font-size: 1.1rem;
  color: var(--text-accent);
  max-width: 900px;
  margin: 0 auto;
  line-height: 1.8;
}

/* Features Section */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  padding: 4rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.feature {
  background: var(--glass-bg);
  backdrop-filter: blur(15px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 2.5rem 2rem;
  text-align: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.feature::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.feature:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 212, 255, 0.2);
  border-color: var(--primary-blue);
}

.feature:hover::before {
  transform: scaleX(1);
}

.feature h3 {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--primary-blue);
  margin-bottom: 1rem;
}

.feature p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* CTA Section */
.cta {
  text-align: center;
  padding: 3rem 2rem;
}

.button {
  display: inline-block;
  background: var(--gradient-accent);
  color: var(--primary-dark);
  padding: 1rem 3rem;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
  position: relative;
  overflow: hidden;
}

.button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #00FFB7 0%, #FFD700 100%);
  transition: left 0.3s ease;
  z-index: -1;
}

.button:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(0, 212, 255, 0.4);
}

.button:hover::before {
  left: 0;
}

/* Stats Section */
.stats {
  background: var(--glass-bg);
  backdrop-filter: blur(15px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 2rem;
  margin: 2rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.stats h3 {
  color: var(--primary-blue);
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

.stats p {
  color: var(--text-accent);
  margin-bottom: 0.5rem;
}

.stats span {
  color: var(--accent-mint);
  font-weight: 600;
}

/* Page Header */
.page-header {
  text-align: center;
  padding: 3rem 2rem;
  background: var(--gradient-hero);
}

.page-header h1 {
  font-size: 2.8rem;
  font-weight: 700;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Content Sections */
.content {
  max-width: 1000px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

.content h2 {
  font-size: 2rem;
  font-weight: 600;
  color: var(--primary-blue);
  margin: 2.5rem 0 1rem 0;
  position: relative;
}

.content h2::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 50px;
  height: 3px;
  background: var(--gradient-accent);
  border-radius: 2px;
}

.content h3 {
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--accent-mint);
  margin: 1.5rem 0 0.8rem 0;
}

.content p {
  color: var(--text-accent);
  margin-bottom: 1.2rem;
  line-height: 1.7;
}

.content ul, .content ol {
  color: var(--text-secondary);
  margin: 1rem 0 1.5rem 2rem;
}

.content li {
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

.content a {
  color: var(--primary-blue);
  text-decoration: none;
  transition: color 0.3s ease;
}

.content a:hover {
  color: var(--accent-mint);
  text-decoration: underline;
}

/* Footer */
footer {
  text-align: center;
  padding: 2rem;
  margin-top: 3rem;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--glass-border);
  color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
  .intro h1 {
    font-size: 2.5rem;
  }
  
  .hero-graphic {
    width: 250px;
    height: 250px;
  }
  
  .features {
    grid-template-columns: 1fr;
    padding: 2rem 1rem;
  }
  
  nav ul {
    flex-direction: column;
    gap: 1rem;
  }
  
  .hero {
    padding: 2rem 1rem;
  }
  
  .content {
    padding: 2rem 1rem;
  }
}

@media (max-width: 480px) {
  .intro h1 {
    font-size: 2rem;
  }
  
  .tagline {
    font-size: 1.1rem;
  }
  
  .button {
    padding: 0.8rem 2rem;
    font-size: 1rem;
  }
}