/* Header component styles */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--background-warm);
  border-bottom: 1px solid var(--border-color);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  min-height: 72px;
  padding-block: var(--space-2);
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--ink-dark);
  flex-shrink: 0;
}

.site-header__logo {
  width: 56px;
  height: 56px;
  object-fit: contain;
  display: block;
}

.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--ink-dark);
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--border-color-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.site-header__toggle:hover {
  background-color: rgba(23, 36, 52, 0.05);
}

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

.site-header__toggle-line {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--ink-dark);
  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 {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-left: auto;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  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-2);
  font-size: 16px;
  font-weight: 500;
  color: var(--ink-dark);
  text-decoration: none;
  position: relative;
  transition: color var(--transition-fast);
}

.site-header__nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background-color: var(--brand-primary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-fast);
}

.site-header__nav-link:hover,
.site-header__nav-link:focus-visible {
  color: var(--brand-primary);
}

.site-header__nav-link:hover::after,
.site-header__nav-link:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

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

.site-header__close {
  display: none;
}

/* Mobile navigation */
@media (max-width: 767px) {
  .site-header__inner {
    min-height: 64px;
  }

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

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

  .site-header__toggle {
    display: flex;
  }

  .site-header__nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(320px, 85vw);
    background-color: var(--background-warm);
    border-left: 1px solid var(--border-color);
    padding: var(--space-5) var(--space-4);
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-4);
    transform: translateX(100%);
    transition: transform var(--transition-fast);
    overflow-y: auto;
    z-index: 200;
    box-shadow: -4px 0 12px rgba(23, 36, 52, 0.1);
  }

  .site-header__nav[data-open="true"] {
    transform: translateX(0);
  }

  .site-header__close {
    display: flex;
    align-items: center;
    justify-content: center;
    align-self: flex-end;
    width: 44px;
    height: 44px;
    padding: 10px;
    margin-bottom: var(--space-2);
    background: transparent;
    border: 1px solid var(--border-color-strong);
    border-radius: var(--radius-sm);
    color: var(--ink-dark);
    cursor: pointer;
    transition: border-color var(--transition-fast), background-color var(--transition-fast);
  }

  .site-header__close:hover {
    background-color: rgba(23, 36, 52, 0.05);
  }

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

  .site-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
  }

  .site-header__nav-link {
    display: block;
    padding: var(--space-2) var(--space-3);
    font-size: 18px;
    border-bottom: 1px solid var(--border-color);
  }

  .site-header__nav-link::after {
    display: none;
  }

  .site-header__cta {
    margin-top: var(--space-3);
    width: 100%;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .site-header__logo {
    width: 48px;
    height: 48px;
  }

  .site-header__brand-text {
    font-size: 1.375rem;
  }

  .site-header__nav {
    gap: var(--space-3);
  }

  .site-header__nav-list {
    gap: var(--space-3);
  }

  .site-header__nav-link {
    font-size: 15px;
  }
}