/* Shared navigation for the homepage and institutional public pages. */
.main-nav {
  position: absolute;
  top: calc(100% + 1px);
  right: max(20px, calc((100vw - var(--max)) / 2));
  width: min(360px, calc(100% - 40px));
  display: none;
  align-items: stretch;
  flex-direction: column;
  gap: 2px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 18px 50px rgba(21,25,30,.13);
}
.main-nav.open { display: flex; }
.main-nav a { padding: 13px; border-radius: 10px; color: #414850; font-size: 12px; font-weight: 800; text-decoration: none; }
.main-nav a:hover, .main-nav a:focus-visible { color: var(--red); background: #fff1f4; }
.main-nav a.active { color: var(--red); background: #fff1f4; }
.main-nav a.nav-action,
.main-nav a.nav-action.active {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 5px;
  padding: 12px 17px;
  border-radius: 999px;
  color: #fff;
  background: var(--red);
  box-shadow: 0 9px 20px rgba(207,21,53,.2);
}
.main-nav a.nav-action::after { content: none; }
.main-nav a.nav-action:hover,
.main-nav a.nav-action:focus-visible { color: #fff; background: var(--red-dark); }
.nav-dropdown { position: static; }
.nav-dropdown > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  padding: 13px;
  border-radius: 10px;
  color: #414850;
  font-size: 12px;
  font-weight: 800;
  list-style: none;
  cursor: pointer;
}
.nav-dropdown > summary::-webkit-details-marker { display: none; }
.nav-dropdown > summary:hover, .nav-dropdown > summary:focus-visible, .nav-dropdown > summary.active { color: var(--red); background: #fff1f4; }
.nav-dropdown > summary span { color: var(--red); font-size: 10px; transition: transform .18s ease; }
.nav-dropdown[open] > summary span { transform: rotate(180deg); }
.nav-submenu { display: grid; gap: 2px; margin: 2px 0 6px; padding: 5px; border-radius: 10px; background: var(--soft); }
.main-nav .nav-submenu a { padding: 10px 12px; border-radius: 9px; }
.nav-session { border-top: 1px solid #dfe3e7; }
.nav-session > summary { display: flex; align-items: center; justify-content: space-between; gap: 6px; padding: 11px 12px; border-radius: 9px; color: #414850; font-size: 12px; font-weight: 850; list-style: none; cursor: pointer; }
.nav-session > summary::-webkit-details-marker { display: none; }
.nav-session > summary:hover, .nav-session > summary:focus-visible, .nav-session > summary.active { color: var(--red); background: #fff; }
.nav-session > summary span { color: var(--red); font-size: 10px; transition: transform .18s ease; }
.nav-session[open] > summary span { transform: rotate(180deg); }
.nav-session-menu { display: grid; gap: 2px; padding: 2px 4px 5px 12px; }
.menu-button {
  min-width: 92px;
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 15px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: #313840;
  background: #fff;
  font-size: 12px;
  font-weight: 850;
  cursor: pointer;
}
/* Height is measured from the actual sticky header, including the top strip.
   Children do not shrink: expanding submenus makes this panel scroll. */
.main-nav { max-height:calc(100vh - var(--institutional-menu-top, 116px) - 12px); max-height:calc(100dvh - var(--institutional-menu-top, 116px) - 12px); overflow-y:auto; overscroll-behavior:contain; scrollbar-gutter:stable; }
.main-nav > * { flex-shrink:0; }
.main-nav a { display:flex; align-items:center; min-height:48px; }
.main-nav summary { min-height:48px; }
.main-nav :is(a,summary):focus-visible, .menu-button:focus-visible { outline:2px solid var(--red); outline-offset:-2px; }
.institutional-nav-icon { display:block; width:20px; height:20px; flex:0 0 20px; }
.menu-button .institutional-nav-icon { color:var(--red); }
.institutional-menu-close { display:none; }
.menu-button[aria-expanded="true"] .institutional-menu-lines { display:none; }
.menu-button[aria-expanded="true"] .institutional-menu-close { display:block; }
.main-nav .nav-action { gap:12px; }
@media (max-width:700px) {
  .menu-button { width:48px; min-width:48px; padding:0; }
  .menu-button-label { display:none; }
  .main-nav { right:12px; width:min(360px, calc(100% - 24px)); }
}
/* Without scripts the complete static navigation remains usable. */
.site-header:not([data-navigation-ready]) { position:static; }
.site-header:not([data-navigation-ready]) .header-inner { flex-wrap:wrap; }
.site-header:not([data-navigation-ready]) .menu-button { display:none; }
.site-header:not([data-navigation-ready]) .main-nav { display:flex; position:static; width:100%; max-height:none; margin-bottom:12px; box-shadow:none; }