.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-parchment);
  border-bottom: 1px solid rgba(43, 38, 32, 0.28);
  box-shadow: var(--shadow-nav);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 64px;
  padding-block: var(--space-2);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-ink);
  flex-shrink: 0;
  min-width: 0;
}

.brand-logo {
  display: block;
  width: 44px;
  height: 44px;
  object-fit: contain;
  border: none;
  border-radius: 0;
  flex-shrink: 0;
}

.brand-text {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.125rem;
  line-height: 1.2;
  letter-spacing: 0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid rgba(43, 38, 32, 0.35);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

.nav-toggle:hover {
  background-color: rgba(43, 38, 32, 0.06);
}

.nav-toggle-line {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-ink);
  border-radius: 1px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

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

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

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

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  flex-shrink: 0;
}

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

.nav-item {
  margin: 0;
  padding: 0;
}

.nav-link {
  display: inline-block;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-label-size);
  line-height: var(--text-label-line-height);
  letter-spacing: var(--text-label-letter-spacing);
  text-transform: uppercase;
  font-weight: 600;
  color: var(--color-ink);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-base), color var(--transition-base);
}

.nav-link:hover {
  background-color: var(--color-wood-dark);
  color: var(--color-parchment);
  text-decoration: none;
}

.nav-link[aria-current="page"] {
  background-color: var(--color-duck-feather);
  color: var(--color-ink);
}

.header-cta {
  flex-shrink: 0;
  white-space: nowrap;
}

@media (max-width: 1023px) {
  .header-inner {
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background-color: var(--color-parchment);
    border-bottom: 1px solid rgba(43, 38, 32, 0.28);
    box-shadow: var(--shadow-nav);
    padding: var(--space-4);
    max-height: calc(100vh - 64px);
    overflow-y: auto;
  }

  .site-nav.is-open {
    display: flex;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
  }

  .nav-link {
    display: block;
    padding: var(--space-3) var(--space-4);
    background-color: var(--color-wood);
    color: var(--color-parchment);
    border-radius: var(--radius-md);
    text-align: center;
  }

  .nav-link:hover {
    background-color: var(--color-wood-dark);
    color: var(--color-parchment);
  }

  .nav-link[aria-current="page"] {
    background-color: var(--color-duck-feather);
    color: var(--color-ink);
  }

  .header-cta {
    margin-top: var(--space-4);
    width: 100%;
    text-align: center;
  }
}

@media (max-width: 767px) {
  .brand-logo {
    width: 34px;
    height: 34px;
  }

  .brand-text {
    font-size: 0.9375rem;
  }

  .header-inner {
    min-height: 56px;
  }

  .site-nav {
    max-height: calc(100vh - 56px);
  }
}

@media (min-width: 1024px) {
  .nav-toggle {
    display: none;
  }

  .site-nav {
    display: flex;
  }
}