/* Una navegación común al portal, al orientador y al simulador. */
.site-header {
  --sn-bg: var(--surface);
  --sn-soft: var(--surface-2);
  --sn-text: var(--text);
  --sn-muted: var(--text-muted);
  --sn-border: var(--border);
  --sn-accent: var(--link);
}
.ach-site-header {
  --sn-bg: var(--ach-surface);
  --sn-soft: var(--ach-surface-2);
  --sn-text: var(--ach-text);
  --sn-muted: var(--ach-muted);
  --sn-border: var(--ach-border);
  --sn-accent: #1b5fbf;
}
.ach-site-header[data-theme='dark'] { --sn-accent: #83dfff; }
.site-header .nav, .ach-site-header .ach-nav { position: relative; gap: 1rem; }
.nav-links, .ach-nav-links { gap: .25rem; }
.site-nav-group { margin: 0; padding: 0; border: 0; background: none; }
.site-nav-summary,
.site-header .nav-links .site-nav-link,
.ach-site-header .ach-nav-links .site-nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
  min-height: 44px;
  padding: .65rem .75rem;
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--sn-muted);
  font-family: inherit;
  font-size: .875rem;
  font-weight: 600;
  line-height: 1.35;
  text-decoration: none;
  white-space: nowrap;
  list-style: none;
  cursor: pointer;
}
.site-nav-summary::-webkit-details-marker { display: none; }
.site-nav-chevron { width: 14px; height: 14px; flex-shrink: 0; transition: transform .15s ease; }
.site-nav-group[open] > .site-nav-summary .site-nav-chevron { transform: rotate(180deg); }
.site-nav-summary:hover,
.site-nav-group[open] > .site-nav-summary,
.site-nav-summary.is-section-active,
.site-header .nav-links .site-nav-link:hover,
.ach-site-header .ach-nav-links .site-nav-link:hover,
.site-nav-link.is-section-active { background: var(--sn-soft); color: var(--sn-text); }
.site-nav-panel {
  position: absolute;
  top: calc(100% + 8px);
  inset-inline: 0;
  width: min(740px, calc(100vw - 40px));
  margin-inline: auto;
  padding: 1.5rem;
  border: 1px solid var(--sn-border);
  border-radius: 16px;
  background: var(--sn-bg);
  color: var(--sn-text);
  box-shadow: 0 16px 40px rgba(0, 15, 35, .2);
  max-height: calc(100dvh - 100px);
  overflow-y: auto;
  overscroll-behavior: contain;
}
.site-nav-panel__intro { margin: 0 0 1rem; color: var(--sn-muted); font-size: .78rem; font-weight: 500; letter-spacing: .02em; }
.site-nav-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .4rem; }
.site-nav-grid .site-nav-entry {
  display: grid;
  align-content: start;
  gap: .3rem;
  min-height: 72px;
  padding: .9rem;
  border: 1px solid transparent;
  border-radius: 10px;
  background: transparent;
  color: var(--sn-text);
  text-decoration: none;
}
.site-nav-grid .site-nav-entry:hover,
.site-nav-grid .site-nav-entry[aria-current='page'] { background: var(--sn-soft); border-color: var(--sn-border); color: var(--sn-text); }
.site-nav-entry__title { font-size: .95rem; font-weight: 650; line-height: 1.4; }
.site-nav-entry__description { color: var(--sn-muted); font-size: .8rem; font-weight: 400; line-height: 1.55; }
.site-nav-panel .site-nav-overview { display: block; margin-top: 1rem; padding: 1rem .9rem 0; border-top: 1px solid var(--sn-border); color: var(--sn-accent); font-size: .875rem; font-weight: 600; text-decoration: none; }
.site-nav-panel .site-nav-overview:hover { text-decoration: underline; text-underline-offset: 3px; }
.site-header .nav-links .site-nav-link--orientador,
.ach-site-header .ach-nav-links .site-nav-link--orientador { color: var(--sn-accent); background: color-mix(in srgb, var(--sn-accent) 8%, var(--sn-bg)); border-color: color-mix(in srgb, var(--sn-accent) 30%, var(--sn-border)); }
.site-nav-compass { width: 18px; height: 18px; flex-shrink: 0; }
.site-nav-link[aria-current='page'] { text-decoration: underline !important; text-underline-offset: 5px; }
.site-header .site-nav-summary:focus-visible,
.site-header [data-site-nav] a:focus-visible { outline: 3px solid var(--sn-accent); outline-offset: 2px; }
.mobile-menu[hidden] { display: none; }
@media (min-width: 900px) {
  .site-header .mobile-menu { display: none; }
}
@media (min-width: 900px) and (max-width: 1199px) {
  .site-header .nav-socials { display: none; }
  .site-header .nav, .ach-site-header .ach-nav { gap: .75rem; }
}
@media (max-width: 899px) {
  .site-mobile-nav { display: grid; gap: .5rem; }
  .site-mobile-nav .site-nav-group { border: 1px solid var(--sn-border); border-radius: 12px; background: var(--sn-bg); overflow: hidden; }
  .site-mobile-nav .site-nav-summary { width: 100%; min-height: 50px; padding: .9rem 1rem; border: 0; border-radius: 0; color: var(--sn-text); font-size: 1rem; white-space: normal; }
  .site-mobile-nav .site-nav-panel { position: static; width: auto; max-height: none; margin: 0; padding: .25rem .5rem .75rem; border: 0; border-radius: 0; box-shadow: none; overflow: visible; }
  .site-mobile-nav .site-nav-panel__intro { padding: .6rem .5rem; margin: 0; font-size: .75rem; }
  .site-mobile-nav .site-nav-grid { grid-template-columns: minmax(0, 1fr); gap: .2rem; }
  .mobile-menu .site-mobile-nav .site-nav-entry,
  .ach-mobile-menu .site-mobile-nav .site-nav-entry { display: grid; gap: .25rem; min-height: 64px; padding: .7rem .6rem; border: 1px solid transparent; border-radius: 8px; color: var(--sn-text); background: transparent; box-shadow: none; transform: none; }
  .mobile-menu .site-mobile-nav .site-nav-entry::after { content: none; }
  .site-mobile-nav .site-nav-entry__title { font-size: .9rem; }
  .site-mobile-nav .site-nav-entry__description { font-size: .78rem; }
  .mobile-menu .site-mobile-nav .site-nav-overview,
  .ach-mobile-menu .site-mobile-nav .site-nav-overview { display: block; margin: .5rem .5rem 0; padding: .85rem 0 0; min-height: 44px; border: 0; border-top: 1px solid var(--sn-border); border-radius: 0; background: transparent; color: var(--sn-accent); box-shadow: none; font-size: .85rem; transform: none; }
  .mobile-menu .site-mobile-nav .site-nav-overview::after { content: none; }
  .site-mobile-nav .site-nav-link,
  .mobile-menu .site-mobile-nav .site-nav-link { display: flex; align-items: center; justify-content: space-between; gap: .75rem; min-height: 50px; padding: .9rem 1rem; border: 1px solid var(--sn-border); border-radius: 12px; color: var(--sn-text); background: var(--sn-bg); font-size: 1rem; font-weight: 600; line-height: 1.4; text-decoration: none; }
  .site-mobile-nav .site-nav-link--orientador,
  .mobile-menu .site-mobile-nav .site-nav-link--orientador { justify-content: flex-start; border-color: var(--sn-accent); background: color-mix(in srgb, var(--sn-accent) 8%, var(--sn-bg)); color: var(--sn-accent); }
  .mobile-menu .site-mobile-nav .site-nav-link--orientador::after { content: none; }
  .site-nav-link__hint { display: block; color: var(--sn-muted); font-size: .78rem; font-weight: 400; }
  .mobile-menu .site-mobile-nav a:hover,
  .ach-mobile-menu .site-mobile-nav a:hover { background: var(--sn-soft); transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .site-nav-chevron { transition: none; }
}