.site-header {
  position: relative;
  z-index: 1000;
  background-color: var(--color-ink);
  color: var(--color-paper);
  border-bottom: var(--border-dark);
}

.site-header__inner {
  display: flex;
  align-items: center;
  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);
  flex-shrink: 0;
  color: var(--color-paper);
  text-decoration: none;
  transition: color var(--transition-color);
}

.site-header__brand:hover {
  color: var(--color-accent-lime);
}

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

.site-header__brand-text {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-paper);
  white-space: nowrap;
}

.site-header__toggle {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  margin-inline-start: auto;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-color), border-color var(--transition-color);
}

.site-header__toggle:hover {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: var(--color-accent-lime);
}

.site-header__toggle:focus-visible {
  outline: 2px solid var(--color-primary-blue);
  outline-offset: 2px;
}

.site-header__toggle-icon,
.site-header__toggle-icon::before,
.site-header__toggle-icon::after {
  display: block;
  position: absolute;
  left: 50%;
  width: 20px;
  height: 2px;
  background-color: var(--color-paper);
  border-radius: 1px;
  transform: translateX(-50%);
  transition: transform var(--transition-transform), top var(--transition-transform), bottom var(--transition-transform), opacity var(--transition-color);
}

.site-header__toggle-icon {
  top: 50%;
  transform: translate(-50%, -50%);
}

.site-header__toggle-icon::before {
  content: '';
  top: -6px;
}

.site-header__toggle-icon::after {
  content: '';
  bottom: -6px;
}

.site-header__toggle[aria-expanded='true'] .site-header__toggle-icon {
  background-color: transparent;
}

.site-header__toggle[aria-expanded='true'] .site-header__toggle-icon::before {
  top: 0;
  transform: translateX(-50%) rotate(45deg);
}

.site-header__toggle[aria-expanded='true'] .site-header__toggle-icon::after {
  bottom: 0;
  transform: translateX(-50%) rotate(-45deg);
}

.site-header__nav {
  margin-inline-start: auto;
  flex-shrink: 1;
  min-width: 0;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.site-header__nav-link {
  display: inline-block;
  padding-block: var(--space-2);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-caption);
  line-height: 1.2;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-paper);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--transition-color);
}

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

.site-header__nav-link:focus-visible {
  outline: 2px solid var(--color-primary-blue);
  outline-offset: 2px;
}

.site-header__cta {
  flex-shrink: 0;
  margin-inline-start: var(--space-2);
}

@media (max-width: 1023px) {
  .site-header__inner {
    flex-wrap: nowrap;
  }

  .site-header__toggle {
    display: block;
  }

  .site-header__nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(320px, 85vw);
    max-width: 100%;
    background-color: var(--color-ink);
    border-inline-start: var(--border-dark);
    box-shadow: -8px 0 24px rgba(21, 25, 31, 0.24);
    padding: var(--space-6) var(--space-5);
    overflow-y: auto;
    transform: translateX(100%);
    visibility: hidden;
    transition: transform var(--transition-transform), visibility var(--transition-transform);
    z-index: 1001;
  }

  .site-header__nav.is-open {
    transform: translateX(0);
    visibility: visible;
  }

  .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-2);
    font-size: var(--text-body);
    border-bottom: 1px solid var(--color-border-dark);
  }

  .site-header__nav-link:hover {
    background-color: rgba(255, 255, 255, 0.06);
  }

  .site-header__cta {
    display: none;
  }
}

@media (max-width: 479px) {
  .site-header__inner {
    min-height: 64px;
    gap: var(--space-3);
  }

  .site-header__logo {
    width: 40px;
    height: 40px;
  }

  .site-header__brand-text {
    font-size: 1.125rem;
  }

  .site-header__toggle {
    width: 40px;
    height: 40px;
  }
}