/* Navigation — site-top, site-header, site-logo, site-nav, mobile nav, nav dropdown */

/* ========== NAVIGATION ========== */

/* Wraps the banner and site-header so both stick together as one block */
.site-top {
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header {
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
}

.site-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.site-logo-img {
  height: 3rem;
  width: auto;
}

.site-nav {
  display: none;
}

@media (min-width: 1024px) {
  .site-nav {
    display: flex;
    align-items: center;
    gap: var(--space-1);
  }
}

.site-nav a {
  padding: var(--space-2) var(--space-4);
  font-weight: 500;
  color: var(--color-text);
  transition: color var(--transition-fast);
  border-radius: var(--radius-sm);
}

.site-nav a:hover {
  color: var(--color-primary);
}

.site-nav-cta {
  margin-left: var(--space-4);
}

.mobile-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text);
}

@media (min-width: 1024px) {
  .mobile-menu-btn,
  .mobile-nav {
    display: none;
  }
}

.mobile-nav {
  display: none;
  background: var(--color-white);
  border-top: 1px solid var(--color-gray-100);
  padding: var(--space-4);
}

/* Scope the open-state rule to mobile widths only. Defense-in-depth:
   without this max-width wrap, .mobile-nav.is-open (specificity 0,2,0)
   would override the desktop @media (min-width: 1024px) .mobile-nav
   (specificity 0,1,0) — the open menu would briefly render at desktop
   widths if a user resized their browser before the JS handler closed
   it, or if JS failed to load entirely. */
@media (max-width: 1023px) {
  .mobile-nav.is-open {
    display: block;
  }
}

/* Body scroll lock while the mobile menu is open. Prevents background
   scroll on iOS Safari, which would otherwise let the user scroll the
   page behind the open menu. */
body.mobile-menu-open {
  overflow: hidden;
}

/* Icon swap is keyed off aria-expanded so the controller never touches
   icon DOM. Single source of truth: aria-expanded changes → icon swaps. */
.mobile-menu-btn .menu-icon {
  display: inline-flex;
}

.mobile-menu-btn .close-icon {
  display: none;
}

.mobile-menu-btn[aria-expanded="true"] .menu-icon {
  display: none;
}

.mobile-menu-btn[aria-expanded="true"] .close-icon {
  display: inline-flex;
}

.mobile-nav a {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.mobile-nav a:hover {
  color: var(--color-primary);
}

/* ========== NAV DROPDOWN ========== */

.nav-dropdown {
  position: relative;
}

.nav-dropdown-content {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  top: 100%;
  left: 0;
  transform: translateY(-8px);
  transition: all var(--transition-base);
  pointer-events: none;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-gray-100);
  padding: var(--space-2);
  min-width: 220px;
  z-index: 100;
}

.nav-dropdown-content a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.nav-dropdown-content a:hover {
  background: var(--color-surface-muted);
  color: var(--color-primary);
}

/* Panel visibility driven by Stimulus controller */
.nav-dropdown-content.is-open {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* Chevron rotation driven by aria-expanded state */
.nav-dropdown-trigger[aria-expanded="true"] svg {
  transform: rotate(180deg);
}

.nav-dropdown-trigger {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
  background: none;
  border: none;
  font-family: inherit;
  font-size: inherit;
}

.nav-dropdown-trigger:hover {
  color: var(--color-primary);
}

.nav-dropdown-trigger svg {
  transition: transform var(--transition-base);
}