/* Header layout */
.wsl-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(10px);
  background-color: rgba(249, 250, 251, 0.96);
  border-bottom: 1px solid var(--color-border-subtle);
}

.wsl-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
  gap: var(--space-16);
}

/* Branding */
.wsl-header__branding {
  display: flex;
  align-items: center;
  min-width: 0;
}

.wsl-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-12);
  color: var(--color-text);
  text-decoration: none;
}

.wsl-header__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 40% 60% 55% 45%;
  background: radial-gradient(circle at 30% 15%, #f9fafb 0, #e5ecf7 32%, #0b3b85 100%);
  box-shadow: var(--shadow-sm);
}

.wsl-header__logo-text {
  display: flex;
  flex-direction: column;
}

.wsl-header__logo-name {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--font-size-lg);
  letter-spacing: 0.02em;
}

.wsl-header__logo-tagline {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* Navigation */
.wsl-header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-24);
}

.wsl-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-16);
  list-style: none;
  margin: 0;
  padding: 0;
}

.wsl-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.1rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.wsl-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: var(--radius-xl);
  background-color: var(--color-primary);
  transition: width var(--transition-normal);
}

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

.wsl-header__nav-link:hover::after,
.wsl-header__nav-link:focus-visible::after {
  width: 100%;
}

.wsl-header__cta-group {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.wsl-header__cta-link {
  font-size: var(--font-size-sm);
  white-space: nowrap;
}

/* Mobile nav toggle */
.wsl-header__nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-8);
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface);
  color: var(--color-text);
}

.wsl-header__nav-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

.wsl-header__nav-toggle-box {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
}

.wsl-header__nav-toggle-line {
  width: 18px;
  height: 2px;
  border-radius: var(--radius-xl);
  background-color: var(--color-neutral-700);
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.wsl-header__nav-toggle-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* Mobile state */
@media (max-width: 768px) {
  .wsl-header__inner {
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
  }

  .wsl-header__nav-toggle {
    display: inline-flex;
  }

  .wsl-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    margin-top: 2px;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border-subtle);
    box-shadow: var(--shadow-md);
    display: none;
    flex-direction: column;
    padding: var(--space-16);
    gap: var(--space-16);
  }

  .wsl-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-8);
  }

  .wsl-header__cta-group {
    width: 100%;
    justify-content: flex-start;
    gap: var(--space-8);
    margin-top: var(--space-8);
  }

  .wsl-header__cta-link {
    flex: 1 1 auto;
    justify-content: center;
  }

  .wsl-header__nav--open {
    display: flex;
  }

  .wsl-header__nav-toggle--open .wsl-header__nav-toggle-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .wsl-header__nav-toggle--open .wsl-header__nav-toggle-line:nth-child(2) {
    opacity: 0;
  }

  .wsl-header__nav-toggle--open .wsl-header__nav-toggle-line:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }
}

/* Medium and up */
@media (min-width: 769px) {
  .wsl-header__nav {
    position: static;
    margin-top: 0;
  }
}

/* High contrast focus for header links */
.wsl-header__nav-link:focus-visible,
.wsl-header__logo-link:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}