nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 22, 40, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 212, 255, 0.1);
  transition: all 0.3s ease;
}

nav.scrolled {
  background: rgba(10, 22, 40, 0.95);
  box-shadow: 0 5px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-icon {
  width: 50px;
  height: 50px;
  background: var(--gradient-neon);
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-dark);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 20px rgba(0, 212, 255, 0.4); }
  50% { box-shadow: 0 0 40px rgba(0, 212, 255, 0.8); }
}

.logo-text {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.nav-links {
  display: flex;
  gap: 30px;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
}

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

.nav-links a.active {
  color: var(--primary-blue);
  position: relative;
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-neon);
  box-shadow: 0 0 10px rgba(0, 212, 255, 0.6);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-neon);
  transition: width 0.3s ease;
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.nav-toggle span {
  width: 30px;
  height: 3px;
  background: var(--primary-blue);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translateY(8px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translateY(-8px);
}

@media (max-width: 768px) {
  .nav-links {
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(10, 22, 40, 0.98);
    padding: 20px;
    gap: 20px;
    transform: translateX(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
  }
  
  .nav-links.active {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .logo-text {
    font-size: 1.1rem;
  }
}