/* Header component styles */
.site-header {
  position: relative;
  z-index: 100;
  background-color: var(--color-ink);
  border-bottom: 1px solid var(--color-signal-border-faint);
}

.site-header__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-4);
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
  min-height: 4.5rem;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-header__nav--left .site-header__nav-list {
  justify-content: flex-start;
}

.site-header__nav--right .site-header__nav-list {
  justify-content: flex-end;
}

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

.site-header__nav-list a {
  display: inline-block;
  padding: var(--space-2) 0;
  color: var(--color-pearl);
  text-decoration: none;
  font-size: var(--text-small-size);
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color var(--transition-slow);
  white-space: nowrap;
}

.site-header__nav-list a:hover {
  color: var(--color-signal);
}

.site-header__nav-list a:focus-visible {
  outline: var(--focus-outline);
  outline-offset: var(--focus-outline-offset);
  border-radius: var(--radius-1);
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-pearl);
  justify-self: center;
  min-width: 0;
}

.site-header__logo {
  width: 3rem;
  height: 3rem;
  object-fit: contain;
  flex-shrink: 0;
}

.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0.3125rem;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-signal-border);
  border-radius: var(--radius-1);
  cursor: pointer;
  transition: border-color var(--transition-slow), background-color var(--transition-slow);
}

.site-header__toggle-line {
  display: block;
  width: 1.25rem;
  height: 2px;
  background-color: var(--color-pearl);
  transition: transform var(--transition-slow), opacity var(--transition-slow);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(1) {
  transform: translateY(0.4375rem) 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(-0.4375rem) rotate(-45deg);
}

.site-header__toggle:hover {
  border-color: var(--color-signal);
  background-color: rgba(61, 90, 254, 0.1);
}

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

.site-header__mobile-nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 99;
  background-color: var(--color-ink);
  border-bottom: 1px solid var(--color-signal-border-faint);
  box-shadow: var(--surface-panel-shadow);
  max-height: calc(100vh - 4.5rem);
  overflow-y: auto;
  padding: var(--space-4) var(--container-padding);
}

.site-header__mobile-nav[hidden] {
  display: none;
}

.site-header__mobile-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

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

.site-header__mobile-nav-list a {
  display: block;
  padding: var(--space-2) 0;
  color: var(--color-pearl);
  text-decoration: none;
  font-size: 1.125rem;
  font-weight: 500;
  transition: color var(--transition-slow);
}

.site-header__mobile-nav-list a:hover {
  color: var(--color-signal);
}

.site-header__mobile-nav-list a:focus-visible {
  outline: var(--focus-outline);
  outline-offset: var(--focus-outline-offset);
  border-radius: var(--radius-1);
}

@media (max-width: 64rem) {
  .site-header__nav {
    display: none;
  }

  .site-header__toggle {
    display: flex;
    justify-self: end;
  }

  .site-header__inner {
    grid-template-columns: 1fr auto 1fr;
  }

  .site-header__brand {
    justify-self: center;
  }

  .site-header__toggle {
    grid-column: 3;
    grid-row: 1;
  }
}

@media (max-width: 48rem) {
  .site-header__logo {
    width: 2.25rem;
    height: 2.25rem;
  }

  .site-header__brand-text {
    font-size: 1.25rem;
  }

  .site-header__inner {
    min-height: 4rem;
  }

  .site-header__mobile-nav {
    max-height: calc(100vh - 4rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header__toggle-line,
  .site-header__nav-list a,
  .site-header__mobile-nav-list a {
    transition: none;
  }
}