.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-purple);
  border-bottom: var(--border-thick) solid var(--color-ink);
  width: 100%;
}

.site-header__inner {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  min-height: 64px;
  height: auto;
}

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

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

.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--color-white);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: var(--border-thick) solid var(--color-white);
  border-radius: var(--radius-slight);
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.site-header__toggle:hover {
  background-color: var(--color-pink);
  border-color: var(--color-ink);
}

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

.site-header__toggle-line {
  display: block;
  width: 22px;
  height: 3px;
  background-color: var(--color-white);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.site-header__nav {
  display: flex;
  align-items: center;
  flex-shrink: 1;
  min-width: 0;
}

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

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

.site-header__nav-link {
  display: inline-block;
  padding: var(--space-sm) 0;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--color-white);
  text-decoration: none;
  border-bottom: 3px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
}

.site-header__nav-link:hover {
  color: var(--color-yellow);
  border-bottom-color: var(--color-yellow);
}

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

.site-header__nav-link--cta {
  background-color: var(--color-yellow);
  color: var(--color-ink);
  border: var(--border-thick) solid var(--color-ink);
  border-radius: var(--radius-slight);
  padding: var(--space-xs) var(--space-md);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.site-header__nav-link--cta:hover {
  background-color: var(--color-pink);
  color: var(--color-ink);
  border-bottom-color: var(--color-ink);
}

@media (max-width: 991px) {
  .site-header__inner {
    flex-wrap: wrap;
    min-height: 56px;
  }

  .site-header__brand {
    flex: 1 1 auto;
    min-width: 0;
  }

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

  .site-header__brand-text {
    font-size: 1.1rem;
  }

  .site-header__toggle {
    display: flex;
    flex-shrink: 0;
  }

  .site-header__nav {
    display: none;
    flex-basis: 100%;
    width: 100%;
    background-color: var(--color-purple);
    border-top: var(--border-thick) solid var(--color-ink);
    padding: var(--space-md) var(--container-gutter);
    max-height: calc(100vh - 56px);
    overflow-y: auto;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  }

  .site-header__nav.is-open {
    display: block;
  }

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

  .site-header__nav-item {
    width: 100%;
  }

  .site-header__nav-link {
    display: block;
    padding: var(--space-sm) var(--space-md);
    border-bottom: none;
    border-left: 3px solid transparent;
  }

  .site-header__nav-link:hover {
    border-left-color: var(--color-yellow);
    border-bottom: none;
  }

  .site-header__nav-link--cta {
    border: var(--border-thick) solid var(--color-ink);
    border-radius: var(--radius-slight);
    margin-top: var(--space-sm);
    text-align: center;
  }

  .site-header__nav-link--cta:hover {
    border-left-color: var(--color-ink);
  }
}

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