.celestial-header {
  position: relative;
  width: 100%;
  padding: var(--space-2) 0;
  background: rgba(10, 18, 34, 0.8);
  backdrop-filter: blur(8px);
  z-index: 100;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-2);
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.logo-orb {
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, var(--twilight-navy) 0%, var(--dark-blue) 100%);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: var(--space-2);
  border: 2px solid var(--sky-blue);
  box-shadow: 0 0 20px rgba(160, 233, 255, 0.5);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.logo-orb::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(160, 233, 255, 0.1) 0%, rgba(160, 233, 255, 0) 70%);
  animation: rotate 8s linear infinite;
  pointer-events: none;
}

.logo {
  width: 70px;
  height: 70px;
  object-fit: contain;
  position: relative;
  z-index: 1;
  transition: transform var(--transition-normal);
}

.logo-orb:hover {
  box-shadow: 0 0 30px rgba(160, 233, 255, 0.7);
}

.logo-orb:hover .logo {
  transform: scale(1.1);
}

.curved-nav {
  width: 100%;
  display: flex;
  justify-content: center;
  margin-top: var(--space-1);
  position: relative;
}

.curved-nav::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(160, 233, 255, 0.1), transparent);
  border-radius: var(--border-radius-xl);
  pointer-events: none;
}

.curved-nav ul {
  display: flex;
  list-style: none;
  gap: var(--space-3);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--border-radius-xl);
  background: rgba(10, 18, 34, 0.5);
  border: 1px solid rgba(160, 233, 255, 0.2);
  flex-wrap: wrap;
  justify-content: center;
}

.nav-link {
  position: relative;
  font-family: var(--heading-font);
  font-size: 1.1rem;
  color: var(--sky-blue);
  padding: 0.25rem 0.5rem;
  transition: all var(--transition-normal);
  display: block;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 100%;
  height: 2px;
  background: var(--celestial-gold);
  transition: transform var(--transition-normal);
  transform-origin: center;
}

.nav-link:hover {
  color: var(--celestial-gold);
  text-shadow: 0 0 8px rgba(245, 197, 66, 0.5);
}

.nav-link:hover::after {
  transform: translateX(-50%) scaleX(1);
}

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

/* Make header disappear on scroll down and reappear on scroll up */
.header-hidden {
  transform: translateY(-100%);
  opacity: 0;
}

/* Mobile menu */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--sky-blue);
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--space-1);
  z-index: 110;
}

@media (max-width: 767px) {
  .logo-orb {
    width: 80px;
    height: 80px;
  }
  
  .logo {
    width: 55px;
    height: 55px;
  }
  
  .curved-nav {
    margin-top: 0;
  }
  
  .curved-nav ul {
    gap: var(--space-2);
    padding: var(--space-1);
  }
  
  .nav-link {
    font-size: 0.9rem;
    padding: 0.2rem 0.4rem;
  }
}

@media (max-width: 480px) {
  .header-container {
    padding: 0 var(--space-1);
  }
  
  .logo-orb {
    width: 70px;
    height: 70px;
    margin-bottom: var(--space-1);
  }
  
  .logo {
    width: 50px;
    height: 50px;
  }
  
  .curved-nav ul {
    gap: var(--space-1);
  }
  
  .nav-link {
    font-size: 0.8rem;
    padding: 0.15rem 0.3rem;
  }
}