.site-header {
  position: relative;
  z-index: 100;
  background-color: var(--color-white);
  border-bottom: 2px solid var(--color-graphite);
}

.site-header__inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding-mobile);
  min-height: 72px;
}

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

.site-header__brand:hover {
  text-decoration: none;
}

.site-header__logo {
  width: 44px;
  height: 44px;
  object-fit: contain;
  flex-shrink: 0;
}

.site-header__brand-text {
  font: 700 1.25rem/1.2 var(--font-heading);
  text-transform: uppercase;
  letter-spacing: -0.01em;
  color: var(--color-graphite);
  white-space: nowrap;
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
}

.site-header__toggle-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-graphite);
  border-radius: 1px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

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

.site-header__nav {
  display: block;
  flex: 1 1 auto;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}

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

.site-header__nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: var(--space-2) var(--space-1);
  font: 600 1rem/1.2 var(--font-heading);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--color-graphite);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--transition-fast);
}

.site-header__nav-link:hover {
  color: var(--color-racing-orange);
  text-decoration: underline;
  text-decoration-color: var(--color-racing-orange);
  text-underline-offset: 4px;
}

.site-header__cta {
  flex-shrink: 0;
  white-space: nowrap;
}

@media (max-width: 1023px) {
  .site-header__inner {
    flex-wrap: nowrap;
    min-height: 64px;
  }

  .site-header__brand {
    margin-right: auto;
    min-width: 0;
  }

  .site-header__toggle {
    display: flex;
  }

  .site-header__nav {
    display: none;
    position: absolute;
    top: calc(100% + var(--space-2));
    left: var(--container-padding-mobile);
    right: var(--container-padding-mobile);
    z-index: 10;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
    background-color: var(--color-graphite);
    border-radius: var(--radius-md);
    padding: var(--space-4);
  }

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

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

  .site-header__nav-link {
    display: flex;
    width: 100%;
    min-height: 44px;
    padding: var(--space-3) var(--space-4);
    color: var(--color-white);
    font-size: 1.125rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    border-radius: var(--radius-sm);
  }

  .site-header__nav-link:hover {
    background-color: var(--color-racing-orange);
    color: var(--color-white);
    text-decoration: none;
  }

  .site-header__cta {
    margin-left: auto;
  }
}

@media (max-width: 767px) {
  .site-header__inner {
    padding-inline: var(--space-4);
  }

  .site-header__nav {
    left: var(--space-4);
    right: var(--space-4);
  }

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

  .site-header__brand-text {
    font-size: 1rem;
  }

  .site-header__cta {
    padding: var(--space-2) var(--space-3);
    font-size: 0.875rem;
    min-height: 40px;
  }
}