.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-navy-900);
  border-bottom: var(--border-dark);
}

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

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

.site-header__logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
  display: block;
}

.site-header__wordmark {
  font-family: var(--font-heading);
  font-size: var(--text-h4);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-white);
  white-space: nowrap;
}

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

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

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

.site-header__nav-link {
  display: inline-block;
  padding-block: var(--space-sm);
  font-size: var(--text-body-sm);
  font-weight: 600;
  color: var(--color-white);
  text-decoration: none;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.site-header__nav-link:hover {
  color: var(--color-coral-300);
}

.site-header__nav-link[aria-current="page"] {
  color: var(--color-coral-500);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.site-header__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--text-button);
  font-weight: 600;
  letter-spacing: var(--tracking-button);
  border-radius: var(--radius-md);
  background-color: var(--color-coral-500);
  color: var(--color-navy-900);
  border: 1px solid var(--color-coral-500);
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.site-header__cta:hover {
  background-color: var(--color-coral-300);
  border-color: var(--color-coral-300);
  color: var(--color-navy-900);
}

.site-header__toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-navy-500);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.site-header__toggle:hover {
  border-color: var(--color-coral-300);
}

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

.site-header__toggle-icon,
.site-header__toggle-icon::before,
.site-header__toggle-icon::after {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-white);
  border-radius: 1px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.site-header__toggle-icon {
  position: relative;
}

.site-header__toggle-icon::before,
.site-header__toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
}

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

.site-header__toggle-icon::after {
  top: 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 {
  transform: translateY(6px) rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon::after {
  transform: translateY(-6px) rotate(-45deg);
}

@media (max-width: 1023px) {
  .site-header__inner {
    padding-inline: var(--container-padding-mobile);
  }

  .site-header__nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-navy-900);
    border-bottom: var(--border-dark);
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-md) var(--container-padding-mobile);
    max-height: calc(100vh - 64px);
    overflow-y: auto;
    z-index: 999;
  }

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

  .site-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-header__nav-item + .site-header__nav-item {
    border-top: 1px solid var(--color-navy-500);
  }

  .site-header__nav-link {
    display: block;
    padding: var(--space-md);
    font-size: var(--text-body);
    color: var(--color-white);
    text-decoration: none;
  }

  .site-header__nav-link:hover {
    background-color: var(--color-navy-700);
    color: var(--color-coral-300);
  }

  .site-header__nav-link[aria-current="page"] {
    color: var(--color-coral-500);
    text-decoration: underline;
    text-underline-offset: 3px;
  }

  .site-header__toggle {
    display: inline-flex;
  }

  .site-header__cta {
    display: none;
  }
}

@media (min-width: 1024px) {
  .site-header__inner {
    padding-inline: var(--container-padding-desktop);
    min-height: 72px;
  }

  .site-header__logo {
    width: 44px;
    height: 44px;
  }

  .site-header__wordmark {
    font-size: var(--text-h3);
  }

  .site-header__nav {
    margin-inline-start: auto;
  }

  .site-header__actions {
    margin-inline-start: var(--space-lg);
  }

  .site-header__toggle {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header__toggle-icon,
  .site-header__toggle-icon::before,
  .site-header__toggle-icon::after {
    transition: none;
  }
}