.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: var(--header-height);
  border-bottom: 1px solid rgba(35, 40, 54, 0.9);
  background: linear-gradient(to bottom, rgba(6, 7, 11, 0.96), rgba(6, 7, 11, 0.9), transparent);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  height: 100%;
  max-width: 1600px;
}

.header-logo {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 0.65rem;
  min-width: 0;
  white-space: nowrap;
}

.header-logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 999px;
  background: conic-gradient(from 140deg, var(--color-primary-gold), var(--color-primary-gold-soft), var(--color-accent-emerald), var(--color-primary-gold-soft), var(--color-primary-gold));
  color: #050609;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 0 0 1px rgba(229, 193, 88, 0.7), 0 0 26px rgba(212, 175, 55, 0.8), 0 18px 42px rgba(0, 0, 0, 0.95);
}

.header-logo-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
  line-height: 1.1;
}

.header-logo-title {
  color: var(--color-text);
  font-family: var(--font-serif);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.header-logo-subtitle {
  display: none;
  color: var(--color-text-muted);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

@media (min-width: 640px) {
  .header-logo-subtitle { display: block; }
}

.header-nav { position: absolute; }

.header-nav-list {
  position: fixed;
  inset-inline: 0;
  top: var(--header-height);
  z-index: 50;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
  max-height: 0;
  overflow: hidden;
  padding: var(--space-4);
  border-bottom: 1px solid rgba(35, 40, 54, 0.9);
  background: radial-gradient(circle at 0 0, rgba(212, 175, 55, 0.1), rgba(6, 7, 11, 0.98));
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base), max-height var(--transition-base);
}

.header-nav-list.is-open {
  max-height: 18rem;
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.header-nav-item { width: 100%; }

.header-nav-link {
  position: relative;
  display: block;
  width: 100%;
  padding-block: 0.6rem;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.header-nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--color-primary-gold), var(--color-accent-emerald));
  transition: width var(--transition-base);
}

.header-nav-link:hover,
.header-nav-link:focus-visible { color: var(--color-primary-gold-soft); }

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

.header-cta {
  display: none;
  align-items: center;
  flex: 0 0 auto;
  gap: var(--space-3);
}

.header-cta .btn {
  padding: 0.65rem 1rem;
  font-size: 0.65rem;
  white-space: nowrap;
}

.header-cta-secondary { display: none; }

.header-toggle {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  gap: 3px;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid rgba(58, 64, 82, 0.95);
  border-radius: 999px;
  background: rgba(6, 7, 11, 0.92);
  color: var(--color-text);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.88);
  transition: background var(--transition-base), border-color var(--transition-base), transform var(--transition-fast);
}

.header-toggle-bar {
  width: 1.25rem;
  height: 2px;
  border-radius: 999px;
  background: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.header-toggle:focus-visible { box-shadow: var(--shadow-focus); }

.header-toggle[aria-expanded="true"] {
  border-color: rgba(229, 193, 88, 0.8);
  background: rgba(10, 12, 18, 0.96);
}

.header-toggle[aria-expanded="true"] .header-toggle-bar:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.header-toggle[aria-expanded="true"] .header-toggle-bar:nth-child(2) { opacity: 0; }
.header-toggle[aria-expanded="true"] .header-toggle-bar:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

.header-overlay {
  position: fixed;
  inset: var(--header-height) 0 0;
  z-index: -1;
  background: radial-gradient(circle at top, rgba(0, 0, 0, 0.75), rgba(0, 0, 0, 0.96));
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.header-overlay.is-active {
  z-index: 40;
  opacity: 1;
  visibility: visible;
}

@media (min-width: 1200px) {
  .header-nav {
    position: static;
    display: block;
    flex: 0 0 auto;
  }

  .header-nav-list {
    position: static;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: clamp(0.55rem, 0.8vw, 1rem);
    max-height: none;
    overflow: visible;
    padding: 0;
    border-bottom: 0;
    background: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    color: inherit;
    font-size: 0.75rem;
    letter-spacing: 0.11em;
    text-transform: uppercase;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .header-nav-item { width: auto; }
  .header-nav-link { width: auto; padding-block: 0.25rem; }
  .header-toggle { display: none; }
}

@media (min-width: 1320px) {
  .header-cta { display: flex; }
}

@media (min-width: 1560px) {
  .header-cta-secondary { display: inline-flex; }
}

.header-skip-link {
  position: absolute;
  left: 50%;
  z-index: 60;
  padding: 0.75rem 1.2rem;
  border: 1px solid rgba(229, 193, 88, 0.9);
  border-radius: var(--radius-full);
  background: var(--color-bg-charcoal);
  color: var(--color-text);
  transform: translate(-50%, -150%);
  transition: transform var(--transition-base);
}

.header-skip-link:focus { transform: translate(-50%, 0.5rem); }