/* ==========================================================================
   Alloy Mega-Menu Navigation — Shared across all pages
   Stripe-inspired morphing dropdown with Alloy brand tokens.
   Requires: alloy-design-system.css loaded first.
   ========================================================================== */

/* ---------- Header shell ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--alloy-line-soft);
}

.nav {
  position: relative;
  display: flex;
  align-items: center;
  gap: 28px;
  height: 66px;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Brand ---------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  font-size: 18px;
  color: var(--alloy-ink);
  letter-spacing: -.02em;
  text-decoration: none;
  flex-shrink: 0;
}
.brand img { width: 26px; height: 26px; }

/* ---------- Desktop nav items ---------- */
.nav-items {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 8px;
  flex: 1;
}

.nav-item {
  position: relative;
  padding: 0;
}

.nav-item > a,
.nav-item > button {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  border-radius: 8px;
  color: var(--alloy-ink-2);
  font-size: 15px;
  font-weight: 500;
  font-family: inherit;
  background: none;
  border: none;
  cursor: pointer;
  transition: color .15s ease, background .15s ease;
  white-space: nowrap;
  text-decoration: none;
  line-height: 1.4;
}

.nav-item > a:hover,
.nav-item > button:hover,
.nav-item > button[aria-expanded="true"] {
  color: var(--alloy-ink);
  background: var(--alloy-surface-2);
}

/* Chevron */
.nav-chevron {
  width: 14px;
  height: 14px;
  transition: transform .2s ease;
  flex-shrink: 0;
}
.nav-item > button[aria-expanded="true"] .nav-chevron {
  transform: rotate(180deg);
}

/* ---------- Dropdown panel (mega-menu) ---------- */
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding-top: 12px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .2s ease, visibility .2s ease;
  z-index: 200;
}

.nav-item.open .nav-dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.nav-dropdown-inner {
  background: #fff;
  border: 1px solid var(--alloy-line);
  border-radius: 14px;
  box-shadow: 0 20px 60px rgba(15,23,42,.12), 0 4px 16px rgba(15,23,42,.06);
  overflow: hidden;
  min-width: 520px;
}

/* Wide panel for Products */
.nav-dropdown-inner.wide {
  min-width: 680px;
}

/* ---------- Dropdown grid layouts ---------- */
.dropdown-grid {
  display: grid;
  gap: 0;
  padding: 12px;
}

.dropdown-grid.cols-2 {
  grid-template-columns: 1fr 1fr;
}

.dropdown-grid.cols-3 {
  grid-template-columns: 1fr 1fr 1fr;
}

/* ---------- Dropdown section ---------- */
.dropdown-section {
  padding: 10px 8px;
}

.dropdown-section-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--alloy-subtle);
  padding: 6px 12px 8px;
  margin: 0;
}

/* ---------- Dropdown link ---------- */
.dropdown-link {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  text-decoration: none;
  color: var(--alloy-ink);
  transition: background .15s ease;
}

.dropdown-link:hover {
  background: var(--alloy-surface-2);
  color: var(--alloy-ink);
}

.dropdown-link-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--alloy-blue-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
}

.dropdown-link-icon.teal { background: rgba(8,145,178,.08); }
.dropdown-link-icon.green { background: rgba(22,160,106,.08); }
.dropdown-link-icon.purple { background: rgba(124,58,237,.08); }
.dropdown-link-icon.amber { background: rgba(216,150,20,.08); }
.dropdown-link-icon.red { background: rgba(217,73,73,.08); }

.dropdown-link-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.dropdown-link-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--alloy-ink);
  line-height: 1.3;
}

.dropdown-link-desc {
  font-size: 12.5px;
  color: var(--alloy-muted);
  line-height: 1.4;
}

/* ---------- Dropdown featured panel ---------- */
.dropdown-featured {
  background: var(--alloy-surface-2);
  padding: 16px 20px;
  border-top: 1px solid var(--alloy-line-soft);
  display: flex;
  align-items: center;
  gap: 16px;
}

.dropdown-featured-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--alloy-blue);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.dropdown-featured-link:hover {
  color: var(--alloy-blue-dark);
}

/* ---------- Desktop CTA buttons ---------- */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  flex-shrink: 0;
}

/* Ghost button (used in nav CTAs) */
.button.ghost { background: transparent; color: var(--alloy-ink-2); padding: 10px 14px; border: none; }
.button.ghost:hover { color: var(--alloy-blue); }

/* ---------- Hamburger toggle (hidden on desktop) ---------- */
.menu-toggle {
  display: none;
  margin-left: auto;
  background: #fff;
  border: 1px solid var(--alloy-line-strong);
  border-radius: 9px;
  padding: 9px 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--alloy-ink);
  cursor: pointer;
  font-family: inherit;
}

/* ---------- Mobile nav panel ---------- */
.mobile-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--alloy-line);
  box-shadow: var(--alloy-shadow-soft);
  padding: 8px 24px 20px;
  max-height: calc(100dvh - 66px);
  overflow-y: auto;
  z-index: 90;
}

.mobile-nav.open {
  display: block;
}

/* Mobile accordion items */
.mobile-nav-item {
  border-bottom: 1px solid var(--alloy-line-soft);
}

.mobile-nav-item > a {
  display: block;
  padding: 14px 2px;
  font-size: 16px;
  font-weight: 500;
  color: var(--alloy-ink-2);
  text-decoration: none;
}

.mobile-nav-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 14px 2px;
  font-size: 16px;
  font-weight: 500;
  color: var(--alloy-ink-2);
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
}

.mobile-nav-toggle .nav-chevron {
  transition: transform .2s ease;
}

.mobile-nav-toggle[aria-expanded="true"] .nav-chevron {
  transform: rotate(180deg);
}

.mobile-nav-section {
  display: none;
  padding: 0 0 12px 8px;
}

.mobile-nav-section.open {
  display: block;
}

.mobile-nav-section-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--alloy-subtle);
  padding: 8px 4px 6px;
}

.mobile-nav-section a {
  display: block;
  padding: 10px 4px;
  font-size: 15px;
  font-weight: 500;
  color: var(--alloy-ink-2);
  text-decoration: none;
}

.mobile-nav-section a:hover {
  color: var(--alloy-blue);
}

.mobile-nav-cta {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--alloy-line-soft);
}

/* ---------- Overlay backdrop ---------- */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 49;
}

.nav-overlay.active {
  display: block;
}

/* ---------- Responsive ---------- */
@media (max-width: 940px) {
  .nav { gap: 12px; height: 60px; }
  .nav-items { display: none; }
  .nav-actions { display: none; }
  .menu-toggle { display: inline-flex; }
  .mobile-nav { padding: 8px 18px 20px; }
}

@media (max-width: 480px) {
  .nav { padding: 0 18px; }
}