.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(22px);
  background: linear-gradient(180deg, rgba(5, 6, 8, 0.96), rgba(5, 6, 8, 0.88), rgba(5, 6, 8, 0.75));
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-4);
}

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

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

.site-header__logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 10%, rgba(199, 166, 103, 0.85), transparent 60%),
    radial-gradient(circle at 70% 90%, rgba(15, 91, 69, 0.85), transparent 60%),
    linear-gradient(145deg, #020305, #12131b);
  box-shadow: var(--shadow-subtle);
}

.site-header__text {
  display: flex;
  flex-direction: column;
}

.site-header__title {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  letter-spacing: var(--tracking-tight);
}

.site-header__subtitle {
  font-family: var(--font-sans);
  font-size: var(--font-size-xs);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-soft);
}

/* Navigation */
.site-header__nav {
  display: flex;
  align-items: center;
}

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

.site-header__nav-link {
  position: relative;
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-soft);
  padding-block: 0.15rem;
}

.site-header__nav-link::after {
  height: 2px;
}

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

.site-header__nav-item--accent .site-header__nav-link--cta {
  padding: 0.55rem 1.4rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(199, 166, 103, 0.75);
  background: radial-gradient(circle at 0 0, rgba(199, 166, 103, 0.2), transparent 55%),
              linear-gradient(130deg, rgba(15, 91, 69, 0.9), rgba(199, 166, 103, 0.9));
  color: #050608;
  box-shadow: var(--shadow-soft);
}

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

.site-header__nav-item--accent .site-header__nav-link--cta:hover,
.site-header__nav-item--accent .site-header__nav-link--cta:focus-visible {
  background: linear-gradient(130deg, var(--color-primary-dark), var(--color-accent-gold));
  transform: translateY(-1px);
}

/* Mobile toggle */
.site-header__toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(5, 6, 8, 0.85);
  color: var(--color-text);
  cursor: pointer;
}

.site-header__toggle-line {
  width: 18px;
  height: 1.5px;
  border-radius: 999px;
  background: var(--color-text);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:first-child {
  transform: translateY(3.5px) rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}

/* Mobile layout */
@media (max-width: 767px) {
  .site-header__nav {
    position: fixed;
    inset-inline: 0;
    top: 64px;
    background: radial-gradient(circle at top, rgba(199, 166, 103, 0.12), transparent 60%),
                linear-gradient(180deg, #050608, #050608);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-8px);
    transition: max-height var(--transition-slow), opacity var(--transition-base), transform var(--transition-base);
  }

  .site-header__nav--open {
    max-height: 320px;
    opacity: 1;
    transform: translateY(0);
  }

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

  .site-header__nav-item--accent {
    width: 100%;
  }

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

/* Desktop layout */
@media (min-width: 768px) {
  .site-header__toggle {
    display: none;
  }
}