.site-header {
  position: relative;
  z-index: 1000;
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-accent-gold);
  padding-block: var(--space-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  flex-wrap: nowrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--color-text-primary);
  text-decoration: none;
  flex-shrink: 0;
  min-width: 0;
}

.brand-logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  flex-shrink: 0;
}

.brand-text {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-width: 44px;
  min-height: 44px;
  padding: var(--space-xs);
  background: transparent;
  border: 1px solid var(--color-accent-gold);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-smooth), border-color var(--transition-smooth);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-accent-gold);
  transition: background-color var(--transition-smooth), transform var(--transition-smooth), opacity var(--transition-smooth);
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  border-color: var(--color-accent-amber);
}

.nav-toggle:hover span,
.nav-toggle:focus-visible span {
  background-color: var(--color-accent-amber);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.site-nav {
  display: block;
  flex-shrink: 1;
  min-width: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  list-style: none !important;
  margin: 0;
  padding: 0;
}

.nav-list li {
  margin: 0;
  padding: 0;
}

.nav-list li + li {
  margin: 0;
}

.nav-list a {
  display: inline-block;
  padding-block: var(--space-xs);
  color: var(--color-text-primary);
  font-size: var(--text-body);
  font-weight: 500;
  letter-spacing: 0.03em;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--transition-smooth);
  position: relative;
}

.nav-list a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-accent-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-smooth);
}

.nav-list a:hover,
.nav-list a:focus-visible {
  color: var(--color-accent-gold);
}

.nav-list a:hover::after,
.nav-list a:focus-visible::after {
  transform: scaleX(1);
}

@media (max-width: 900px) {
  .header-inner {
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-accent-gold);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-smooth);
    z-index: 999;
  }

  .site-nav.is-open {
    max-height: 80vh;
    overflow-y: auto;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-sm);
  }

  .nav-list li {
    width: 100%;
  }

  .nav-list a {
    display: block;
    padding: var(--space-sm);
    border-bottom: 1px solid rgba(201, 169, 97, 0.2);
  }

  .nav-list li:last-child a {
    border-bottom: none;
  }

  .nav-list a::after {
    display: none;
  }
}

@media (max-width: 480px) {
  .brand-logo {
    width: 40px;
    height: 40px;
  }

  .brand-text {
    font-size: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header *,
  .site-header *::before,
  .site-header *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}