.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  backdrop-filter: blur(var(--blur-glass));
  background: linear-gradient(180deg, rgba(5, 8, 20, 0.98), rgba(5, 8, 20, 0.94));
  border-bottom: 1px solid var(--color-border-subtle);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.25rem;
  gap: var(--space-md);
}

.site-header-brand {
  display: flex;
  align-items: center;
  flex: 1 1 auto;
}

.site-header-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-text);
  text-decoration: none;
}

.site-header-logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(217, 179, 108, 0.7);
  background: radial-gradient(circle at 0 0, rgba(217, 179, 108, 0.3), transparent 55%), linear-gradient(135deg, rgba(12, 19, 40, 0.96), rgba(5, 8, 20, 0.98));
  font-family: var(--font-accent);
  font-size: 1.05rem;
  letter-spacing: 0.12em;
}

.site-header-logo-text {
  display: flex;
  flex-direction: column;
}

.site-header-logo-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.site-header-logo-subtitle {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.site-header-toggle {
  display: none;
  position: relative;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(217, 179, 108, 0.7);
  background: radial-gradient(circle at 0 0, rgba(217, 179, 108, 0.22), transparent 55%), linear-gradient(135deg, rgba(12, 19, 40, 0.96), rgba(5, 8, 20, 0.98));
  padding: 0;
  cursor: pointer;
}

.site-header-toggle:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

.site-header-toggle-bar {
  position: absolute;
  left: 0.6rem;
  right: 0.6rem;
  height: 2px;
  border-radius: 999px;
  background: var(--color-text);
  transition: transform var(--transition-base), opacity var(--transition-base), top var(--transition-base), bottom var(--transition-base);
}

.site-header-toggle-bar:nth-child(1) {
  top: 0.75rem;
}

.site-header-toggle-bar:nth-child(2) {
  top: 1.2rem;
}

.site-header-toggle-bar:nth-child(3) {
  bottom: 0.75rem;
}

.site-header-nav {
  flex: 0 1 auto;
}

.site-header-nav-list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.site-header-nav-item {
  flex: 0 0 auto;
}

.site-header-nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0;
  font-size: 0.85rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-soft);
  text-decoration: none;
}

.site-header-nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.1rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(217, 179, 108, 0), rgba(217, 179, 108, 0.9), rgba(217, 179, 108, 0));
  transform-origin: center;
  transform: scaleX(0);
  opacity: 0;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

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

.site-header-nav-item--accent .site-header-nav-link--button {
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(217, 179, 108, 0.7);
  background: radial-gradient(circle at 0 0, rgba(217, 179, 108, 0.2), transparent 55%), linear-gradient(135deg, rgba(15, 58, 109, 0.9), rgba(5, 8, 20, 0.98));
  box-shadow: var(--shadow-subtle);
  color: var(--color-text);
}

.site-header-nav-item--accent .site-header-nav-link--button::after {
  display: none;
}

.site-header-nav-item--accent .site-header-nav-link--button:hover {
  background: radial-gradient(circle at 0 0, rgba(255, 179, 71, 0.22), transparent 55%), linear-gradient(135deg, rgba(255, 179, 71, 0.9), rgba(180, 122, 43, 1));
}

@media (max-width: 1023.98px) {
  .site-header-inner {
    min-height: 3.75rem;
  }
  .site-header-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .site-header-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    transform-origin: top;
    transform: scaleY(0.9);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    background: linear-gradient(180deg, var(--color-bg-elevated), rgba(5, 8, 20, 0.98));
    border-bottom: 1px solid var(--color-border-subtle);
    box-shadow: var(--shadow-soft);
  }
  .site-header-nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-md);
    gap: var(--space-sm);
  }
  .site-header-nav-link {
    width: 100%;
    padding: 0.55rem 0.25rem;
    font-size: 0.9rem;
  }
  .site-header-nav-item--accent .site-header-nav-link--button {
    width: 100%;
    justify-content: center;
  }
  .site-header.is-open .site-header-nav {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: scaleY(1);
  }
  .site-header.is-open .site-header-toggle-bar:nth-child(1) {
    top: 1.2rem;
    transform: rotate(45deg);
  }
  .site-header.is-open .site-header-toggle-bar:nth-child(2) {
    opacity: 0;
  }
  .site-header.is-open .site-header-toggle-bar:nth-child(3) {
    bottom: 1.2rem;
    transform: rotate(-45deg);
  }
}

@media (max-width: 767.98px) {
  .site-header-logo-subtitle {
    display: none;
  }
}

@media (min-width: 1024px) {
  .site-header-nav {
    display: block;
  }
}