/* Header styles scoped to site header */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-index-sticky);
  background: var(--color-white);
  box-shadow: var(--shadow-base);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}
.brand-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-gray-900);
}
.brand-link:hover { color: var(--color-primary); }
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-ocean-blue) 0%, var(--color-turquoise) 100%);
  color: var(--color-white);
  box-shadow: var(--shadow-glow);
  font-size: var(--font-size-lg);
}
.brand-text {
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-extrabold);
  letter-spacing: 0.02em;
}

/* Navigation */
.primary-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.nav-link {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-1);
  color: var(--color-gray-800);
  font-weight: var(--font-weight-medium);
  position: relative;
}
.nav-link:after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -4px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-ocean-blue), var(--color-sunset-orange));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base) var(--transition-timing);
}
.nav-link:hover { color: var(--color-primary-hover); }
.nav-link:hover:after, .nav-link:focus-visible:after { transform: scaleX(1); }

.nav-cta { white-space: nowrap; }

/* Toggle (hamburger) */
.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-gray-800);
  border-radius: var(--radius-base);
  padding: var(--space-2) var(--space-3);
}
.nav-toggle:focus-visible { box-shadow: 0 0 0 3px rgba(0, 119, 190, 0.2); }
.nav-toggle-box { display: inline-grid; gap: 4px; }
.nav-toggle-line {
  width: 22px; height: 2px; background: var(--color-gray-800);
  transition: transform var(--transition-base) var(--transition-timing), opacity var(--transition-base) var(--transition-timing);
}

/* Mobile behavior driven by .js-enabled to keep nav visible when JS is disabled */
@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }
  .primary-nav { gap: var(--space-4); }
  .js-enabled #primary-navigation {
    position: fixed;
    top: 0; right: 0; bottom: 0; width: min(85vw, 340px);
    background: var(--color-white);
    box-shadow: var(--shadow-2xl);
    transform: translateX(100%);
    transition: transform var(--transition-slow) var(--transition-timing);
    display: flex; flex-direction: column; justify-content: space-between;
    padding: var(--space-8) var(--space-6);
  }
  .js-enabled #primary-navigation.is-open { transform: translateX(0); }
  .js-enabled .nav-list { flex-direction: column; align-items: flex-start; gap: var(--space-4); }
  .js-enabled .nav-cta-wrap { padding-top: var(--space-6); border-top: 1px solid var(--color-border); }
  /* Animate toggle into X when open */
  .menu-open .nav-toggle-line:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .menu-open .nav-toggle-line:nth-child(2) { opacity: 0; }
  .menu-open .nav-toggle-line:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
}