.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(5, 6, 8, 0.96), rgba(5, 6, 8, 0.86));
  border-bottom: 1px solid rgba(244, 199, 106, 0.18);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
}

.site-header__brand {
  display: flex;
  align-items: center;
}

.site-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
}

.site-header__logo-mark {
  position: relative;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 20%, rgba(244, 199, 106, 0.9), rgba(196, 27, 43, 0.9));
  box-shadow: 0 0 20px rgba(244, 199, 106, 0.55);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.site-header__logo-orbit {
  position: absolute;
  inset: 9px;
  border-radius: 999px;
  border: 1px solid rgba(5, 6, 8, 0.55);
  box-shadow: 0 0 0 1px rgba(5, 6, 8, 0.9);
}

.site-header__logo-moon {
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 20%, #fff, #f4c76a);
  transform: translate(4px, -3px);
}

.site-header__brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.site-header__brand-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--font-size-lg);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.site-header__brand-tagline {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.18em;
}

.site-header__nav {
  display: flex;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.site-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding-block: 0.25rem;
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.3rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-accent-gold), var(--color-primary));
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-base);
}

.site-header__nav-link:hover,
.site-header__nav-link:focus-visible {
  color: var(--color-text);
}

.site-header__nav-link:hover::after,
.site-header__nav-link:focus-visible::after {
  transform: scaleX(1);
}

.site-header__nav-item--cta .site-header__nav-link--cta {
  padding-inline: 1.1rem;
  padding-block: 0.45rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(244, 199, 106, 0.7);
  background: radial-gradient(circle at 0 0, rgba(244, 199, 106, 0.25), transparent 55%),
    linear-gradient(120deg, rgba(196, 27, 43, 0.9), rgba(12, 125, 90, 0.8));
  box-shadow: var(--shadow-subtle);
  color: #fff;
}

.site-header__nav-item--cta .site-header__nav-link--cta::after {
  display: none;
}

.site-header__nav-item--cta .site-header__nav-link--cta:hover,
.site-header__nav-item--cta .site-header__nav-link--cta:focus-visible {
  box-shadow: var(--shadow-elevated);
  transform: translateY(-1px);
}

.site-header__nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-2);
  padding: 0.35rem 0.6rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-subtle);
  background-color: rgba(8, 8, 12, 0.9);
  color: var(--color-text);
}

.site-header__nav-toggle-box {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
}

.site-header__nav-toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-text);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.site-header__nav-toggle-text {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

/* Mobile styles */
@media (max-width: 768px) {
  .site-header__inner {
    padding-block: var(--space-3);
  }

  .site-header__nav-toggle {
    display: inline-flex;
  }

  .site-header__nav {
    position: fixed;
    inset: 0 0 auto 0;
    top: 56px;
    background: radial-gradient(circle at top, #181929 0, #050608 55%);
    border-top: 1px solid var(--color-border-subtle);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-4) var(--space-6);
  }

  .site-header__nav-link {
    font-size: var(--font-size-md);
  }

  .site-header--menu-open .site-header__nav {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .site-header--menu-open .site-header__nav-toggle-bar:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .site-header--menu-open .site-header__nav-toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .site-header--menu-open .site-header__nav-toggle-bar:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }
}

@media (max-width: 520px) {
  .site-header__brand-tagline {
    display: none;
  }
}