.site-header {
  position: relative;
  z-index: 1000;
  background-color: var(--color-off-white);
  border-bottom: 1px solid var(--color-ocean-border);
}

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

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

.site-header__brand:hover {
  color: var(--color-ocean-deep);
  text-decoration: none;
}

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

.site-header__wordmark {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.125rem;
  line-height: 1.2;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-header__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-button-input);
  background: transparent;
  border: 2px solid transparent;
  flex-shrink: 0;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.site-header__toggle:hover {
  background-color: var(--color-sand);
}

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

.site-header__toggle-icon {
  position: relative;
  width: 24px;
  height: 2px;
  background-color: var(--color-ocean-deep);
  transition: background-color var(--transition-fast);
}

.site-header__toggle-icon::before,
.site-header__toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 24px;
  height: 2px;
  background-color: var(--color-ocean-deep);
  transition: transform var(--transition-fast), top var(--transition-fast);
}

.site-header__toggle-icon::before {
  top: -7px;
}

.site-header__toggle-icon::after {
  top: 7px;
}

.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: rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

.site-header__nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--color-off-white);
  border-bottom: 1px solid var(--color-ocean-border);
  box-shadow: var(--shadow-soft);
  max-height: calc(100vh - 64px);
  overflow-y: auto;
  z-index: 999;
}

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

.site-header__nav-list {
  list-style: none;
  margin: 0;
  padding: var(--space-sm) var(--page-padding-mobile) var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.site-header__nav-list li {
  margin: 0;
  padding: 0;
}

.site-header__nav-list a {
  display: flex;
  justify-content: center;
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.125rem;
  line-height: 1.2;
  color: var(--color-ocean-deep);
  text-decoration: none;
  border-radius: var(--radius-button-input);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.site-header__nav-list a:hover {
  background-color: var(--color-sand);
  color: var(--color-ocean-deep);
  text-decoration: none;
}

.site-header__nav-list a:focus-visible {
  outline: 2px solid var(--color-terracotta);
  outline-offset: 2px;
}

@media (min-width: 600px) {
  .site-header__inner {
    padding-inline: var(--page-padding-tablet);
  }

  .site-header__nav-list {
    padding-inline: var(--page-padding-tablet);
  }
}

@media (min-width: 900px) {
  .site-header__inner {
    padding-inline: var(--page-padding-desktop);
    min-height: 72px;
  }

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

  .site-header__wordmark {
    font-size: 1.25rem;
  }

  .site-header__toggle {
    display: none;
  }

  .site-header__nav {
    display: block;
    position: static;
    background: transparent;
    border: none;
    box-shadow: none;
    max-height: none;
    overflow: visible;
    z-index: auto;
  }

  .site-header__nav-list {
    flex-direction: row;
    align-items: center;
    gap: var(--space-md);
    padding: 0;
  }

  .site-header__nav-list a {
    padding: var(--space-xs) var(--space-sm);
    font-size: 1rem;
    line-height: 1.2;
    border-radius: var(--radius-button-input);
  }

  .site-header__nav-list a:hover {
    background-color: transparent;
    color: var(--color-terracotta);
    text-decoration: underline;
    text-decoration-color: var(--color-terracotta);
    text-underline-offset: 3px;
  }
}

@media (min-width: 1280px) {
  .site-header__inner {
    padding-inline: var(--page-padding-wide);
  }
}

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