/*
 * Inclusify navigation and header system.
 */

:root {
  --header-height: 80px;
  --header-z-index: 1100;
  --nav-panel-shadow: 0 24px 60px rgba(23, 33, 31, 0.14);
  --nav-backdrop: rgba(8, 16, 15, 0.42);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--header-z-index);
  background-color: rgba(247, 250, 248, 0.94);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(215, 225, 221, 0.92);
  transition: box-shadow var(--transition-base), background-color var(--transition-base), border-color var(--transition-base);
}

.site-header.scrolled,
.site-header.nav-open {
  box-shadow: 0 16px 36px rgba(23, 33, 31, 0.08);
}

.header-inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
}

.header-left {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: clamp(var(--space-lg), 3vw, var(--space-2xl));
  flex: 1 1 auto;
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex: 0 0 auto;
}

.logo {
  display: inline-flex;
  align-items: center;
}

.logo-img,
.custom-logo {
  width: auto;
  max-width: 180px;
  height: 46px;
}

.header-nav {
  flex: 1 1 auto;
  min-width: 0;
}

.header-nav-shell {
  display: flex;
  align-items: center;
}

.header-nav-shell[hidden] {
  display: none;
}

/* Ensure hidden sub-menu panels are always display:none regardless of mobile overrides */
[data-nav-panel][hidden] {
  display: none !important;
}

.primary-menu {
  display: flex;
  align-items: center;
  gap: clamp(var(--space-sm), 1.4vw, var(--space-lg));
  width: 100%;
}

.nav-item {
  position: relative;
}

.nav-item-row {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link,
.submenu-link {
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-link {
  position: relative;
  padding: 0 6px;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 6px;
  right: 6px;
  bottom: 8px;
  height: 2px;
  border-radius: 999px;
  background: var(--primary-teal);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-base);
}

.nav-item:hover > .nav-item-row > .nav-link,
.nav-item:focus-within > .nav-item-row > .nav-link,
.nav-item.is-open > .nav-item-row > .nav-link,
.nav-link[aria-current="page"] {
  color: var(--ink);
}

.nav-item:hover > .nav-item-row > .nav-link::after,
.nav-item:focus-within > .nav-item-row > .nav-link::after,
.nav-item.is-open > .nav-item-row > .nav-link::after,
.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav-submenu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-left: -2px;
  border-radius: 999px;
  color: var(--text-subtle);
  transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.nav-item:hover > .nav-item-row > .nav-submenu-toggle,
.nav-item:focus-within > .nav-item-row > .nav-submenu-toggle,
.nav-item.is-open > .nav-item-row > .nav-submenu-toggle {
  color: var(--ink);
  background: rgba(31, 122, 109, 0.08);
}

.nav-toggle-icon {
  transition: transform var(--transition-fast);
}

.nav-item.is-open > .nav-item-row .nav-toggle-icon {
  transform: rotate(180deg);
}

.nav-panel {
  position: absolute;
  top: calc(100% + 12px);
  left: 0;
  min-width: 250px;
  padding: var(--space-sm);
  border: 1px solid rgba(215, 225, 221, 0.96);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--nav-panel-shadow);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 180ms ease, transform 220ms cubic-bezier(0.22, 1, 0.36, 1), visibility 180ms ease;
  z-index: 5;
}

/* Hover bridge — prevents gap between nav item and dropdown panel from closing the menu */
.nav-panel::before {
  content: '';
  position: absolute;
  top: -16px;
  left: -4px;
  right: -4px;
  height: 20px;
}

.nav-item.is-open > .nav-panel {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.sub-menu {
  display: grid;
  gap: 4px;
}

.submenu-item {
  min-width: 0;
}

.submenu-link {
  width: 100%;
  min-height: 42px;
  padding: 10px 14px;
  border-radius: 14px;
}

.submenu-link:hover,
.submenu-link:focus-visible {
  background: var(--soft-sage);
  color: var(--ink);
}

.mega-panel {
  left: 0;
  width: min(760px, calc(100vw - 48px));
  padding: var(--space-lg);
  transform: translateY(12px);
}

/* For the last 2 nav items with megamenu, align right to prevent right-edge overflow */
.primary-menu > .nav-item:nth-last-child(-n+2).has-megamenu > .mega-panel {
  left: auto;
  right: 0;
}

.nav-item.is-open > .mega-panel {
  transform: translateY(0);
}

.primary-menu > .nav-item:nth-last-child(-n+2).has-megamenu.is-open > .mega-panel {
  transform: translateY(0);
}

.mega-panel-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-lg);
}

.mega-panel-column {
  min-width: 0;
}

.mega-panel-heading {
  margin-bottom: var(--space-sm);
  padding-inline: 4px;
  color: var(--text-subtle);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.mega-panel-list {
  display: grid;
  gap: 6px;
}

.mega-panel-link {
  display: grid;
  gap: 2px;
  padding: 14px 16px;
  border-radius: 16px;
  background: transparent;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.mega-panel-link:hover,
.mega-panel-link:focus-visible {
  background: var(--soft-sage);
  transform: translateY(-1px);
}

.mega-panel-link-title {
  color: var(--ink);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
}

.mega-panel-link-description {
  color: var(--text-subtle);
  font-size: 0.8125rem;
  line-height: 1.55;
}

.mega-panel-footer {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
}

.mega-panel-footer-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--primary-teal);
  font-size: 0.875rem;
  font-weight: 500;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.mega-panel-footer-link:hover,
.mega-panel-footer-link:focus-visible {
  background: var(--soft-sage);
  border-color: rgba(31, 122, 109, 0.32);
  color: var(--deep-teal);
}

.mobile-nav-actions {
  display: none;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 46px;
  height: 46px;
  padding: 10px;
  border: 1px solid rgba(215, 225, 221, 0.92);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.78);
  transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.mobile-menu-btn:hover,
.mobile-menu-btn:focus-visible {
  background: var(--white);
  border-color: rgba(31, 122, 109, 0.24);
}

.mobile-menu-btn span {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: var(--ink);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-menu-btn.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-menu-btn.is-active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: calc(var(--header-z-index) - 1);
  background: var(--nav-backdrop);
  opacity: 0;
  transition: opacity 220ms ease;
}

.nav-backdrop.is-visible {
  opacity: 1;
}

@media (min-width: 1025px) {
  .header-nav-shell[hidden] {
    display: flex !important;
  }
}

@media (max-width: 1180px) {
  .header-right .btn-signin {
    display: none;
  }
}

@media (max-width: 1024px) {
  :root {
    --header-height: 76px;
  }

  .header-inner {
    gap: var(--space-md);
  }

  .header-left {
    gap: var(--space-lg);
  }

  .header-right .btn-signin,
  .header-right .btn-primary {
    display: none;
  }

  .mobile-menu-btn {
    display: inline-flex;
  }

  .header-nav {
    flex: 0 0 auto;
    display: block;
  }

  .header-nav-shell {
    position: fixed;
    top: calc(var(--header-height) + 12px);
    right: max(16px, env(safe-area-inset-right));
    left: max(16px, env(safe-area-inset-left));
    display: block;
    max-height: calc(100dvh - var(--header-height) - 28px);
    padding: var(--space-md);
    overflow: auto;
    border: 1px solid rgba(215, 225, 221, 0.98);
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 28px 70px rgba(23, 33, 31, 0.18);
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 220ms ease, transform 260ms cubic-bezier(0.22, 1, 0.36, 1);
    overscroll-behavior: contain;
    z-index: calc(var(--header-z-index) + 1);
  }

  .header-nav-shell.is-open {
    opacity: 1;
    transform: translateY(0);
  }

  .primary-menu {
    display: grid;
    gap: 4px;
  }

  .nav-item {
    width: 100%;
    border-bottom: 1px solid rgba(215, 225, 221, 0.72);
  }

  .nav-item:last-child {
    border-bottom: 0;
  }

  .nav-item-row {
    width: 100%;
    align-items: center;
    justify-content: space-between;
  }

  .nav-link {
    flex: 1 1 auto;
    min-height: 52px;
    padding: 0;
  }

  .nav-link::after {
    display: none;
  }

  .nav-submenu-toggle {
    width: 44px;
    height: 44px;
    margin-right: -4px;
  }

  .nav-panel,
  .mega-panel {
    position: static;
    width: 100%;
    max-width: none;
    min-width: 0;
    padding: 0 0 var(--space-md);
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
    transition: none;
  }

  .sub-menu {
    gap: 2px;
    padding-top: 4px;
  }

  .submenu-link,
  .mega-panel-link {
    padding: 12px 14px;
    min-height: 44px;
    border-radius: 14px;
    background: rgba(234, 243, 239, 0.42);
  }

  .mega-panel-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
    padding-top: 4px;
  }

  .mega-panel-footer {
    padding-top: var(--space-sm);
  }

  .mobile-nav-actions {
    display: grid;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px solid rgba(215, 225, 221, 0.72);
  }

  .mobile-nav-actions .btn {
    width: 100%;
  }
}

@media (max-width: 640px) {
  :root {
    --header-height: 72px;
  }

  .header-nav-shell {
    top: calc(var(--header-height) + 8px);
    right: max(12px, env(safe-area-inset-right));
    left: max(12px, env(safe-area-inset-left));
    max-height: calc(100dvh - var(--header-height) - 20px);
    padding: 14px;
    border-radius: 20px;
  }

  .logo-img,
  .custom-logo {
    height: 40px;
    max-width: 156px;
  }

  .mobile-menu-btn {
    width: 42px;
    height: 42px;
    padding: 9px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header,
  .nav-panel,
  .nav-backdrop,
  .header-nav-shell,
  .mobile-menu-btn span,
  .nav-toggle-icon {
    transition: none !important;
  }
}