.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--navbar-height);
  background: linear-gradient(to bottom, rgba(5, 6, 8, 0.96), rgba(5, 6, 8, 0.84));
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-brand {
  display: flex;
  align-items: center;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: #ffffff;
}

.brand-mark {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 1.1rem;
  background: radial-gradient(circle at 30% 0%, rgba(231, 201, 148, 0.55), transparent 55%),
    radial-gradient(circle at 80% 100%, rgba(30, 207, 122, 0.6), transparent 55%),
    linear-gradient(140deg, #050608, #151827);
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 0 18px rgba(30, 207, 122, 0.45);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.brand-mark-inner {
  width: 65%;
  height: 65%;
  border-radius: 40% 65% 50% 70%;
  border: 2px solid rgba(5, 6, 8, 0.85);
  background: radial-gradient(circle at 20% 0%, rgba(255, 255, 255, 0.45), transparent 60%),
    radial-gradient(circle at 80% 100%, rgba(5, 6, 8, 0.8), #050608 80%);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.brand-tagline {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-muted);
}

.primary-nav {
  display: flex;
  align-items: center;
}

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

.nav-item {
  list-style: none;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding-block: 0.25rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color var(--transition-base), transform var(--transition-fast);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.15rem;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-gold));
  transition: width var(--transition-base);
}

.nav-link:hover {
  color: #ffffff;
  transform: translateY(-1px);
}

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

.nav-item-cta .nav-link-cta {
  padding-inline: 1.1rem;
  padding-block: 0.45rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(30, 207, 122, 0.7);
  background: radial-gradient(circle at 10% 0%, rgba(30, 207, 122, 0.25), transparent 55%),
    linear-gradient(120deg, rgba(30, 207, 122, 0.15), rgba(231, 201, 148, 0.08));
  box-shadow: 0 0 18px rgba(30, 207, 122, 0.35);
}

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

.nav-item-cta .nav-link-cta:hover {
  border-color: var(--color-gold);
  box-shadow: var(--shadow-glow-emerald), var(--shadow-glow-gold);
}

/* Mobile navigation */

.nav-toggle {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(5, 6, 8, 0.96);
  cursor: pointer;
  transition: background-color var(--transition-base), border-color var(--transition-base), transform var(--transition-fast);
}

.nav-toggle:hover {
  border-color: rgba(231, 201, 148, 0.8);
  transform: translateY(-1px);
}

.nav-toggle-bar {
  width: 1.2rem;
  height: 2px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.85);
  transition: transform var(--transition-base), opacity var(--transition-base), background-color var(--transition-base);
}

.nav-toggle-bar + .nav-toggle-bar {
  margin-top: 0.22rem;
}

.nav-toggle.is-open .nav-toggle-bar:nth-child(1) {
  transform: translateY(0.24rem) rotate(42deg);
}

.nav-toggle.is-open .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open .nav-toggle-bar:nth-child(3) {
  transform: translateY(-0.24rem) rotate(-42deg);
}

@media (max-width: 899px) {
  .primary-nav {
    position: fixed;
    inset-inline: 0;
    top: var(--navbar-height);
    background: linear-gradient(to bottom, rgba(5, 6, 8, 0.98), rgba(5, 6, 8, 0.96));
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transform: translateY(-110%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
  }

  .primary-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4) var(--space-4) var(--space-5);
    gap: var(--space-3);
  }

  .nav-item-cta {
    margin-top: var(--space-1);
    width: 100%;
  }

  .nav-item-cta .nav-link-cta {
    justify-content: center;
    width: 100%;
    text-align: center;
  }
}

@media (min-width: 900px) {
  .nav-toggle {
    display: none;
  }

  .primary-nav {
    position: static;
    transform: none !important;
    opacity: 1 !important;
    visibility: visible !important;
  }
}

/* Reduced motion preference */

@media (prefers-reduced-motion: reduce) {
  .primary-nav,
  .nav-toggle,
  .nav-link,
  .nav-toggle-bar {
    transition: none;
  }
}