/* Header component styles */
.site-header {
  --header-height: var(--header-height-desktop);
  position: relative;
  z-index: 1000;
  background-color: var(--color-paper);
  border-bottom: 1px solid var(--border-ink-15);
  box-shadow: var(--shadow-paper-label);
  padding-block: var(--space-sm);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  width: 100%;
  max-width: var(--container-editorial);
  margin-inline: auto;
  padding-inline: var(--page-padding-inline);
  min-height: var(--header-height);
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
  text-decoration: none;
  color: var(--color-ink);
  background-color: var(--color-paper);
  border: 1px solid var(--border-ink-15);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-paper-label);
  padding: var(--space-xs) var(--space-md);
  transition: border-color var(--transition-fast), transform var(--transition-press);
}

.site-header__brand:hover {
  border-color: var(--border-ink-40);
}

.site-header__brand:active {
  transform: rotate(1.5deg);
}

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

.site-header__wordmark {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  line-height: 1.2;
  font-weight: 600;
  color: var(--color-ink);
  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-color: transparent;
  border: 1px solid var(--border-ink-25);
  border-radius: var(--radius-tab);
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.site-header__toggle:hover {
  border-color: var(--border-ink-40);
  background-color: var(--color-paper-deep);
}

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

.site-header__toggle-line {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-ink);
  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 {
  flex: 1 1 auto;
  min-width: 0;
}

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

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

.site-header__nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-paper-deep);
  border: 1px solid var(--border-ink-15);
  border-radius: var(--radius-tab);
  font-size: var(--text-small-size);
  line-height: var(--text-small-leading);
  font-weight: 500;
  color: var(--color-ink);
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-press);
}

.site-header__nav-link:hover {
  background-color: var(--color-paper);
  border-color: var(--border-ink-40);
  color: var(--color-terracotta);
}

.site-header__nav-link:active {
  transform: rotate(1deg);
}

.site-header__nav-link[aria-current="page"] {
  background-color: var(--color-paper);
  border-color: var(--border-ink-active);
  border-bottom: 2px solid var(--color-terracotta);
  color: var(--color-ink);
  font-weight: 600;
}

.site-header__search {
  flex-shrink: 0;
}

.site-header__search-form {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  background-color: var(--color-paper-light);
  border: 1px solid var(--border-ink-25);
  border-radius: var(--radius-search);
  padding: var(--space-xs) var(--space-sm);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.site-header__search-form:focus-within {
  border-color: var(--border-ink-40);
  background-color: var(--color-paper-light);
}

.site-header__search-input {
  width: 140px;
  padding: var(--space-xs);
  border: none;
  background: transparent;
  font-size: var(--text-small-size);
  line-height: var(--text-small-leading);
  color: var(--color-ink);
  outline: none;
}

.site-header__search-input::placeholder {
  color: var(--color-ink-soft);
}

.site-header__search-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: var(--radius-stamp);
  cursor: pointer;
  color: var(--color-ink);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.site-header__search-button:hover {
  color: var(--color-terracotta);
  background-color: var(--color-paper-deep);
}

.site-header__search-button:focus-visible {
  outline: var(--focus-outline-width) solid var(--focus-outline-color);
  outline-offset: var(--focus-outline-offset);
}

.site-header__search-icon {
  display: block;
}

/* Mobile navigation */
@media (max-width: 1023px) {
  .site-header {
    --header-height: var(--header-height-mobile);
  }

  .site-header__inner {
    flex-wrap: wrap;
    gap: var(--space-sm);
    padding-block: var(--space-xs);
  }

  .site-header__brand {
    order: 1;
    flex: 0 1 auto;
    min-width: 0;
    padding: var(--space-xs) var(--space-sm);
  }

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

  .site-header__wordmark {
    font-size: 1rem;
  }

  .site-header__toggle {
    display: flex;
    order: 2;
    margin-inline-start: auto;
  }

  .site-header__search {
    order: 3;
    flex: 1 1 100%;
    margin-block-start: var(--space-xs);
  }

  .site-header__search-form {
    width: 100%;
  }

  .site-header__search-input {
    flex: 1;
    width: auto;
  }

  .site-header__nav {
    order: 4;
    flex: 1 1 100%;
    display: none;
    background-color: var(--color-paper);
    border: 1px solid var(--border-ink-15);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    padding: var(--space-md);
    margin-block-start: var(--space-xs);
    max-height: 70vh;
    overflow-y: auto;
  }

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

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

  .site-header__nav-link {
    width: 100%;
    justify-content: flex-start;
    padding: var(--space-md) var(--space-lg);
    min-height: 44px;
  }
}

@media (max-width: 479px) {
  .site-header__brand {
    padding: var(--space-2xs) var(--space-xs);
  }

  .site-header__logo {
    width: 32px;
    height: 32px;
  }

  .site-header__wordmark {
    font-size: 0.9375rem;
  }

  .site-header__search-input {
    font-size: 0.8125rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header__brand:active,
  .site-header__nav-link:active {
    transform: none;
  }
}