/* =============================================================================
   NAVIGATION — Primary menu, dropdowns, mobile panel
   Targets .nav-menu (our template) AND .menu (Drupal stable9 default).

   KEY: Drupal wraps {{ page.primary_menu }} in a block <div>, so we can't
   use .site-nav > .menu (direct child). We use:
     .site-nav .menu:not(li .menu)  — top-level menu inside .site-nav,
                                       NOT a submenu (which lives inside <li>)
   This works whether or not the custom menu template is active.
   ============================================================================= */

/* ---------------------------------------------------------------------------
   WRAPPER
--------------------------------------------------------------------------- */

.site-nav {
  display: flex;
  align-items: center;
  flex: 1;
  justify-content: flex-end;
}

/* ---------------------------------------------------------------------------
   TOP-LEVEL LIST
   Reset + hidden by default (shown on desktop / inside mobile panel)
--------------------------------------------------------------------------- */

.nav-menu,
.site-nav .menu:not(li .menu) {
  list-style: none;
  margin: 0;
  padding: 0;
}

/* Hidden on mobile (the .site-nav panel slides off-screen anyway,
   but this prevents a flash if JS hasn't run yet) */
.nav-menu--primary,
.site-nav .menu:not(li .menu) {
  display: none;
}

@media (min-width: 1024px) {
  .nav-menu--primary,
  .site-nav .menu:not(li .menu) {
    display: flex;
    align-items: center;
    flex-direction: row;
    gap: var(--space-2);
    flex-wrap: nowrap;
  }
}

/* ---------------------------------------------------------------------------
   TOP-LEVEL ITEM
--------------------------------------------------------------------------- */

.nav-menu__item,
.site-nav li {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

/* ---------------------------------------------------------------------------
   TOP-LEVEL LINK
--------------------------------------------------------------------------- */

.nav-menu__link,
.site-nav .menu:not(li .menu) > li > a,
.site-nav .menu > li > a {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  transition: color var(--transition-fast), background var(--transition-fast);
  line-height: 1.5;
}

/* Light theme — govt-style subtle nav */
html[data-theme="light"] .nav-menu__link,
html[data-theme="light"] .site-nav .menu > li > a {
  color: #374151;
  font-weight: var(--font-normal);
}

/* Underline accent */
.nav-menu__link::after,
.site-nav .menu:not(li .menu) > li > a::after,
.site-nav .menu > li > a::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: var(--space-4);
  right: var(--space-4);
  height: 2px;
  background: var(--gradient-brand);
  border-radius: var(--radius-full);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-fast);
}

/* Hover */
.nav-menu__link:hover,
.site-nav .menu:not(li .menu) > li > a:hover,
.site-nav .menu > li > a:hover {
  color: var(--color-brand-text);
  background: var(--color-brand-subtle);
}

/* Light theme — govt hover: darken text, no heavy brand bg */
html[data-theme="light"] .nav-menu__link:hover,
html[data-theme="light"] .site-nav .menu > li > a:hover {
  color: #111827;
  background: #F3F4F6;
}

.nav-menu__link:hover::after,
.site-nav .menu:not(li .menu) > li > a:hover::after,
.site-nav .menu > li > a:hover::after {
  transform: scaleX(1);
}

/* Active / current trail */
.nav-menu__link.is-active,
.site-nav .menu:not(li .menu) > li.is-active > a,
.site-nav .menu:not(li .menu) > li.menu-item--active-trail > a,
.site-nav .menu > li.is-active > a,
.site-nav .menu > li.menu-item--active-trail > a,
.site-nav .menu > li > a.is-active {
  color: var(--color-brand-text);
  background: var(--color-brand-subtle);
  font-weight: var(--font-semibold);
}

.nav-menu__link.is-active::after,
.site-nav .menu:not(li .menu) > li.is-active > a::after,
.site-nav .menu:not(li .menu) > li.menu-item--active-trail > a::after,
.site-nav .menu > li.is-active > a::after,
.site-nav .menu > li.menu-item--active-trail > a::after,
.site-nav .menu > li > a.is-active::after {
  transform: scaleX(1);
}

/* Dark mode link color */
@media (prefers-color-scheme: dark) {
  .nav-menu__link,
  .site-nav .menu:not(li .menu) > li > a,
  .site-nav .menu > li > a {
    color: #CBD5E1;
  }

  .nav-menu__link:hover,
  .site-nav .menu:not(li .menu) > li > a:hover,
  .site-nav .menu > li > a:hover,
  .nav-menu__link.is-active,
  .site-nav .menu:not(li .menu) > li.is-active > a,
  .site-nav .menu > li.is-active > a,
  .site-nav .menu > li > a.is-active {
    color: var(--color-primary-300);
    background: rgba(99, 102, 241, 0.12);
  }
}

/* ---------------------------------------------------------------------------
   DROPDOWN TOGGLE BUTTON
--------------------------------------------------------------------------- */

.nav-menu__toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.nav-menu__toggle svg {
  transition: transform var(--transition-fast);
}

.nav-menu__item.is-open .nav-menu__toggle svg {
  transform: rotate(180deg);
}

/* ---------------------------------------------------------------------------
   SUBMENU DROPDOWN
--------------------------------------------------------------------------- */

.nav-menu__sub,
.site-nav .menu:not(li .menu) > li > ul {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  min-width: 200px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: var(--space-2);
  list-style: none;
  margin: 0;
  z-index: var(--z-dropdown);
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  transition:
    opacity    var(--transition-fast),
    transform  var(--transition-fast),
    visibility var(--transition-fast);
}

@media (min-width: 1024px) {
  .nav-menu__item:hover .nav-menu__sub,
  .nav-menu__item:focus-within .nav-menu__sub,
  .nav-menu__item.is-open .nav-menu__sub,
  .site-nav .menu:not(li .menu) > li:hover > ul,
  .site-nav .menu:not(li .menu) > li:focus-within > ul {
    opacity: 1;
    pointer-events: auto;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
  }
}

/* Submenu links */
.nav-menu__sub-link,
.site-nav .menu:not(li .menu) > li > ul li a {
  display: block;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.nav-menu__sub-link::after,
.site-nav .menu:not(li .menu) > li > ul li a::after {
  display: none !important;
}

.nav-menu__sub-link:hover,
.site-nav .menu:not(li .menu) > li > ul li a:hover {
  background: var(--color-brand-subtle);
  color: var(--color-brand-text);
  padding-left: var(--space-4);
}

/* ---------------------------------------------------------------------------
   MOBILE NAV — Slide-in panel
--------------------------------------------------------------------------- */

@media (max-width: 1023px) {

  .site-nav {
    position: fixed;
    top: var(--header-height-current, var(--header-height));
    right: 0;
    bottom: 0;
    left: auto;
    width: min(280px, 88vw);
    height: calc(100vh - var(--header-height-current, var(--header-height)));
    background: var(--color-surface);
    z-index: var(--z-sticky);
    padding: var(--space-5);
    overflow-y: auto;
    overflow-x: hidden;
    transform: translateX(110%);
    transition: transform var(--transition-slow);
    border-left: 1px solid var(--color-border);
    box-shadow: var(--shadow-2xl);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
  }

  /* When header shrinks on scroll */
  body.header-scrolled .site-nav {
    top: var(--header-height-scroll);
    height: calc(100vh - var(--header-height-scroll));
  }

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

  /* Strip wrapper div styling */
  .site-nav .block,
  .site-nav > div {
    width: 100%;
    background: transparent !important;
    padding: 0 !important;
    border: none !important;
    box-shadow: none !important;
    border-radius: 0 !important;
    margin: 0 !important;
  }

  /* Force vertical column layout */
  .site-nav ul {
    display: flex !important;
    flex-direction: column !important;
    width: 100%;
    list-style: none;
    margin: 0;
    padding: 0;
  }

  .site-nav li {
    width: 100%;
    margin: 0;
    padding: 0;
    list-style: none;
  }

  /* Show the menu list */
  .nav-menu--primary,
  .site-nav .menu:not(li .menu) {
    display: flex !important;
    flex-direction: column !important;
    gap: var(--space-1);
    width: 100%;
  }

  .nav-menu__item,
  .site-nav .menu:not(li .menu) > li {
    width: 100%;
  }

  /* Full-width links with visible background */
  .nav-menu__link,
  .site-nav .menu:not(li .menu) > li > a,
  .site-nav .menu > li > a {
    display: block;
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    border-radius: var(--radius-lg);
    color: var(--color-text);
    background: transparent;
    text-decoration: none;
    box-sizing: border-box;
  }

  .nav-menu__link:hover,
  .site-nav .menu > li > a:hover {
    background: var(--color-brand-subtle);
    color: var(--color-brand-text);
  }

  .nav-menu__link::after,
  .site-nav .menu:not(li .menu) > li > a::after {
    display: none;
  }

  /* Mobile submenu */
  .nav-menu__sub,
  .site-nav .menu:not(li .menu) > li > ul {
    position: static;
    transform: none;
    opacity: 1;
    pointer-events: auto;
    visibility: visible;
    box-shadow: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-bg-secondary);
    margin-top: var(--space-1);
    padding: var(--space-2);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
    min-width: 0;
    width: 100%;
  }

  .nav-menu__item.is-open .nav-menu__sub,
  .site-nav .menu:not(li .menu) > li.is-open > ul {
    max-height: 600px;
  }
}

/* ---------------------------------------------------------------------------
   BACKDROP OVERLAY
--------------------------------------------------------------------------- */

.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(4px);
  z-index: calc(var(--z-sticky) - 1);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.nav-overlay.is-active {
  opacity: 1;
  pointer-events: auto;
}