/* ==========================================================================
   Navigation — Desktop mega menu, mobile drawer
   ========================================================================== */

/* ==========================================================================
   Desktop Navigation
   ========================================================================== */

.nav-desktop {
  display: flex;
  align-items: center;
  height: 100%;
  gap: var(--space-1);
}

.nav-desktop > ul {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  height: 100%;
  gap: var(--space-1);
}

.nav-desktop > ul > li {
  position: relative;
  margin: 0;
  height: 100%;
}

.nav-desktop > ul > li > a,
.nav-desktop > ul > li > button.nav-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  height: 100%;
  padding: 0 var(--space-4);
  font-weight: var(--font-medium);
  font-size: var(--text-base);
  color: var(--color-gray-800);
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-primary);
  position: relative;
  transition: color var(--transition-fast);
}

.nav-desktop > ul > li > a::after,
.nav-desktop > ul > li > button.nav-link::after {
  content: '';
  position: absolute;
  left: var(--space-3);
  right: var(--space-3);
  bottom: 0;
  height: 3px;
  background: var(--color-secondary);
  border-radius: var(--radius-full) var(--radius-full) 0 0;
  transform: scaleX(0);
  transition: transform var(--transition-base);
  transform-origin: left;
}

.nav-desktop > ul > li > a:hover,
.nav-desktop > ul > li > a.active,
.nav-desktop > ul > li > button.nav-link:hover,
.nav-desktop > ul > li > button.nav-link.active,
.nav-desktop > ul > li > button.nav-link[aria-expanded="true"] {
  color: var(--color-primary);
}

.nav-desktop > ul > li > a:hover::after,
.nav-desktop > ul > li > a.active::after,
.nav-desktop > ul > li > button.nav-link:hover::after,
.nav-desktop > ul > li > button.nav-link.active::after,
.nav-desktop > ul > li > button.nav-link[aria-expanded="true"]::after {
  transform: scaleX(1);
}

.nav-desktop .nav-caret {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-base);
  color: currentColor;
}

.nav-desktop .nav-link[aria-expanded="true"] .nav-caret {
  transform: rotate(180deg);
}

/* ==========================================================================
   Mega Menu Panel
   ========================================================================== */

.mega-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 320px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--space-6);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-base);
  z-index: var(--z-mega-menu);
  max-height: calc(100vh - var(--header-height) - 20px);
  overflow-y: auto;
}

.nav-desktop > ul > li:hover .mega-menu,
.nav-desktop > ul > li .nav-link[aria-expanded="true"] + .mega-menu,
.nav-desktop > ul > li:focus-within .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.mega-menu-wide {
  width: 680px;
}

.mega-menu-extra-wide {
  width: 880px;
}

.mega-menu-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.mega-menu-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.mega-menu-section {
  padding: var(--space-2) 0;
}

.mega-menu-section-title {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-gray-400);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-gray-200);
}

.mega-menu-links {
  list-style: none;
  margin: 0;
  padding: 0;
}

.mega-menu-links li {
  margin: 0;
}

.mega-menu-links a {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-2);
  border-radius: var(--radius-md);
  color: var(--color-gray-700);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.mega-menu-links a:hover {
  background: var(--color-gray-50);
  color: var(--color-primary);
}

.mega-menu-links a .menu-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: rgba(10, 61, 98, 0.06);
  color: var(--color-primary);
  flex-shrink: 0;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.mega-menu-links a:hover .menu-icon {
  background: var(--color-primary);
  color: var(--color-white);
}

.mega-menu-links a .menu-icon svg {
  width: 18px;
  height: 18px;
}

.mega-menu-links a .menu-link-text {
  display: block;
}

.mega-menu-links a .menu-link-title {
  display: block;
  font-weight: var(--font-medium);
  color: inherit;
}

.mega-menu-links a .menu-link-desc {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-gray-400);
  margin-top: 1px;
  line-height: 1.4;
}

/* CTA inside mega menu */
.mega-menu-cta {
  margin-top: var(--space-5);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-gray-200);
  text-align: center;
}

/* ==========================================================================
   Mobile Navigation
   ========================================================================== */

.nav-mobile {
  position: fixed;
  inset: var(--header-height-mobile) 0 0 0;
  background: var(--color-white);
  z-index: var(--z-mobile-menu);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

body.nav-open {
  overflow: hidden;
}

.nav-mobile.open {
  transform: translateX(0);
}

.nav-mobile-inner {
  padding: var(--space-4);
  padding-bottom: var(--space-16);
}

.nav-mobile ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-mobile > ul > li {
  border-bottom: 1px solid var(--color-gray-100);
}

.nav-mobile > ul > li:last-child {
  border-bottom: none;
}

.nav-mobile > ul > li > a,
.nav-mobile-level > li > a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-2);
  color: var(--color-gray-800);
  font-weight: var(--font-medium);
  font-size: var(--text-lg);
  transition: color var(--transition-fast);
}

.nav-mobile > ul > li > a:hover,
.nav-mobile-level > li > a:hover {
  color: var(--color-primary);
}

.nav-mobile-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  padding: var(--space-2);
  cursor: pointer;
  color: var(--color-gray-500);
  border-radius: var(--radius-sm);
  transition: transform var(--transition-base), color var(--transition-fast);
}

.nav-mobile-toggle[aria-expanded="true"] {
  transform: rotate(90deg);
  color: var(--color-primary);
}

.nav-mobile-toggle svg {
  width: 20px;
  height: 20px;
}

.nav-mobile-level {
  display: none;
  padding-left: var(--space-4);
  background: var(--color-gray-50);
}

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

.nav-mobile-level > li > a {
  font-size: var(--text-base);
  font-weight: var(--font-regular);
  padding: var(--space-3) var(--space-2);
}

.nav-mobile-level.level-2 {
  padding-left: var(--space-8);
  background: var(--color-gray-100);
}

.nav-mobile-cta {
  padding: var(--space-6) var(--space-2);
  border-top: 1px solid var(--color-gray-200);
  margin-top: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* Nav overlay for mobile */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--z-mobile-menu) - 1);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.nav-overlay.open {
  opacity: 1;
  visibility: visible;
}

/* ==========================================================================
   Focus handling
   ========================================================================== */

.nav-desktop > ul > li > a:focus-visible,
.nav-desktop > ul > li > button.nav-link:focus-visible {
  outline-offset: -3px;
}

/* Keyboard user support: show on focus-within */
.nav-desktop > ul > li:focus-within .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}