.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg-obsidian);
  border-bottom: 1px solid var(--accent-brass);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 72px;
  padding-block: var(--space-3);
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--text-crisp-white);
  flex-shrink: 0;
}

.site-header__logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  display: block;
}

.site-header__brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.site-header__brand-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.02em;
  color: var(--text-crisp-white);
}

.site-header__brand-sub {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-brass);
}

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

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  list-style: none !important;
  margin: 0;
  padding: 0;
}

.site-header__nav-item {
  margin: 0;
  padding: 0;
}

.site-header__nav-link {
  display: inline-block;
  padding: var(--space-2) 0;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-crisp-white);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: color var(--transition-fast);
  position: relative;
  white-space: nowrap;
}

.site-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background-color: var(--accent-brass);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-fast);
}

.site-header__nav-link:hover {
  color: var(--accent-brass);
}

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

.site-header__nav-link:focus-visible {
  outline: 2px solid var(--accent-brass);
  outline-offset: 4px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--accent-brass);
  border-radius: var(--radius-small);
  cursor: pointer;
  padding: 0;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
  flex-shrink: 0;
}

.nav-toggle:hover {
  background-color: var(--accent-brass);
  border-color: var(--accent-brass);
}

.nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--accent-brass);
  transition: background-color var(--transition-fast), transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle:hover .nav-toggle__bar {
  background-color: var(--bg-obsidian);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--accent-brass);
  outline-offset: 2px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 1024px) {
  .site-header {
    z-index: 120;
  }

  .site-header__inner {
    min-height: 64px;
    position: relative;
    z-index: 1;
  }

  .site-header__logo {
    width: 36px;
    height: 36px;
  }

  .site-header__brand-name {
    font-size: 18px;
  }

  .site-header__brand-sub {
    font-size: 10px;
  }

  .site-header__nav {
    position: fixed;
    top: 64px;
    right: 0;
    bottom: 0;
    width: min(320px, 85vw);
    background-color: var(--bg-obsidian);
    border-left: 1px solid var(--accent-brass);
    box-shadow: -4px 0 12px rgba(0, 0, 0, 0.5);
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    z-index: 110;
    padding: var(--space-5);
    overflow-y: auto;
    display: block;
    pointer-events: none;
  }

  .site-header__nav.is-open {
    transform: translateX(0);
    pointer-events: auto;
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-3);
  }

  .site-header__nav-link {
    display: block;
    padding: var(--space-3) var(--space-4);
    font-size: 18px;
    border-bottom: 1px solid rgba(201, 162, 39, 0.2);
  }

  .site-header__nav-link::after {
    display: none;
  }

  .nav-toggle {
    display: flex;
    position: relative;
    z-index: 2;
  }

  body.nav-open {
    overflow: hidden;
  }
}

@media (max-width: 480px) {
  .site-header__brand-text {
    display: none;
  }

  .site-header__logo {
    width: 36px;
    height: 36px;
  }
}