:root {
  --primary-dark: #0a0f1c;
  --primary-blue: #1a2b4c;
  --accent-cyan: #00d4ff;
  --accent-electric: #00ff88;
  --text-light: #e8f4f8;
  --text-muted: #a0b4c7;
  --surface-dark: #151b2e;
  --surface-light: rgba(255, 255, 255, 0.05);
  --gradient-primary: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-blue) 100%);
  --gradient-accent: linear-gradient(45deg, var(--accent-cyan) 0%, var(--accent-electric) 100%);
  --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.3);
  --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Exo 2', sans-serif;
  background: var(--gradient-primary);
  color: var(--text-light);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

.grid-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
  z-index: -1;
  animation: gridPulse 4s ease-in-out infinite;
}

@keyframes gridPulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.1; }
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 15, 28, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 212, 255, 0.2);
  animation: slideDown 0.8s ease-out;
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.nav-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.logo {
  font-family: 'Orbitron', monospace;
  font-size: 1.8rem;
  font-weight: 900;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 2px;
  margin: 0;
}

.logo-subtitle {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 1px;
  margin-top: -2px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
  white-space: nowrap;
}

.nav-link {
  color: var(--text-light);
  text-decoration: none;
  font-weight: 500;
  position: relative;
  transition: var(--transition-smooth);
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-accent);
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent-cyan);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  width: 25px;
  height: 3px;
  background: var(--accent-cyan);
  margin: 3px 0;
  transition: var(--transition-smooth);
}

.main {
  padding-top: 100px;
  min-height: 100vh;
}

.hero {
  padding: 4rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 4rem;
  align-items: center;
  animation: fadeInUp 1s ease-out 0.3s both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-title {
  font-family: 'Orbitron', monospace;
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 2rem;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 600px;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 400px;
  position: relative;
}

.signal-tower {
  position: relative;
  width: 200px;
  height: 300px;
}

.tower-base {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 20px;
  background: var(--gradient-accent);
  border-radius: 10px;
}

.tower-mast {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: 8px;
  height: 250px;
  background: linear-gradient(to top, var(--accent-cyan), var(--accent-electric));
  border-radius: 4px;
  box-shadow: var(--shadow-glow);
}

.signal-waves {
  position: absolute;
  center: 50px;
  left: 50%;
  transform: translateX(-50%);
}

.wave {
  position: absolute;
  border: 2px solid var(--accent-cyan);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.wave-1 {
  width: 80px;
  height: 80px;
  top: -40px;
  left: -40px;
  animation-delay: 0s;
}

.wave-2 {
  width: 120px;
  height: 120px;
  top: -60px;
  left: -60px;
  animation-delay: 0.5s;
}

.wave-3 {
  width: 160px;
  height: 160px;
  top: -80px;
  left: -80px;
  animation-delay: 1s;
}

@keyframes pulse {
  0% {
    opacity: 1;
    transform: scale(0.8);
  }
  50% {
    opacity: 0.5;
    transform: scale(1);
  }
  100% {
    opacity: 0;
    transform: scale(1.2);
  }
}

.mission-vision {
  padding: 4rem 2rem;
  background: rgba(21, 27, 46, 0.6);
  backdrop-filter: blur(10px);
}

.container {
  max-width: 1400px;
  margin: 0 auto;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 3rem;
  animation: fadeInUp 1s ease-out 0.6s both;
}

.card {
  background: var(--surface-light);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 20px;
  padding: 2.5rem;
  backdrop-filter: blur(20px);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

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

.card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-glow);
  border-color: var(--accent-cyan);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.card-icon {
  width: 50px;
  height: 50px;
  background: var(--gradient-accent);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-dark);
}

.card-icon svg {
  width: 24px;
  height: 24px;
}

.card-title {
  font-family: 'Orbitron', monospace;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.card-content {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.footer {
  background: var(--primary-dark);
  border-top: 1px solid rgba(0, 212, 255, 0.2);
  padding: 2rem;
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-text {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  gap: 1rem;
}

.footer-link {
  width: 40px;
  height: 40px;
  background: var(--surface-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: var(--transition-smooth);
  text-decoration: none;
}

.footer-link:hover {
  background: var(--gradient-accent);
  color: var(--primary-dark);
  transform: translateY(-2px);
}

.footer-link svg {
  width: 20px;
  height: 20px;
}

@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }
  
  .hero-title {
    font-size: 2.8rem;
  }
  
  .cards-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .nav {
    padding: 1rem;
  }
  
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 15, 28, 0.98);
    flex-direction: column;
    padding: 2rem;
    gap: 1rem;
    border-top: 1px solid rgba(0, 212, 255, 0.2);
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .hero {
    padding: 2rem 1rem;
  }
  
  .hero-title {
    font-size: 2.2rem;
  }
  
  .hero-visual {
    height: 300px;
  }
  
  .signal-tower {
    width: 150px;
    height: 200px;
  }
  
  .tower-mast {
    height: 180px;
  }
  
  .mission-vision {
    padding: 2rem 1rem;
  }
  
  .cards-grid {
    grid-template-columns: 1fr;
  }
  
  .card {
    padding: 2rem;
  }
  
  .footer-content {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .logo {
    font-size: 1.4rem;
  }
  
  .logo-subtitle {
    font-size: 0.6rem;
  }
  
  .hero-title {
    font-size: 1.8rem;
  }
  
  .hero-description {
    font-size: 1rem;
  }
  
  .card {
    padding: 1.5rem;
  }
  
  .card-title {
    font-size: 1.3rem;
  }
}