.site-header {
  position: relative;
  z-index: 1000;
  background-color: var(--color-chalk-white);
  border-bottom: var(--border-hairline);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--container-margin-mobile);
  height: 64px;
}

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

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

.site-header__logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
  flex-shrink: 0;
}

.site-header__brand-text {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--color-ink-grey);
  white-space: nowrap;
}

.site-header__nav {
  display: none;
}

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

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

.site-header__nav-link {
  display: inline-block;
  padding: var(--space-xs) 0;
  font-family: var(--font-body);
  font-size: var(--text-small-body-size);
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-ink-grey);
  text-decoration: none;
  transition: color var(--transition-color);
  white-space: nowrap;
}

.site-header__nav-link:hover {
  color: var(--color-burgundy);
  text-decoration: underline;
  text-decoration-color: var(--color-burgundy);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.site-header__nav-link[aria-current="page"] {
  color: var(--color-burgundy);
  text-decoration: underline;
  text-decoration-color: var(--color-burgundy);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.site-header__toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: var(--touch-target-min);
  height: var(--touch-target-min);
  padding: 0;
  background: transparent;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
}

.site-header__toggle-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-ink-grey);
  transition: transform var(--transition-transform), opacity var(--transition-color);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) {
  transform: translateY(6px) 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(-6px) rotate(-45deg);
}

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

@media (min-width: 768px) {
  .site-header__inner {
    padding-inline: var(--container-margin-tablet);
    height: 80px;
    
  }

  .site-header__logo {
    width: 48px;
    height: 48px;
  }

  .site-header__brand-text {
    font-size: 18px;
  }
}

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

  .site-header__nav {
    display: block;
  }

  .site-header__toggle {
    display: none;
  }
}

@media (max-width: 1023px) {
  .site-header {
    position: sticky;
    top: 0;
  }

  .site-header__nav {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 30%;
    background-color: var(--color-chalk-white);
    z-index: 999;
    overflow-y: auto;
    padding: var(--space-md);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  }

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

  .site-header__nav-list {
    flex-direction: column;    
    gap: var(--space-sm);
  }

  .site-header__nav-link {
    font-size: var(--text-body-size);
    font-family: var(--font-heading);
    font-weight: 400;
    text-transform: none;
    letter-spacing: 0;
    padding: var(--space-xs) 0;
  }
}