/* Shared About dropdown (desktop) + accordion (mobile drawer).
   Uses global.css brand tokens only. */
.nav-dropdown { position: relative; flex-shrink: 0; }

.nav-dropdown__trigger {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--spacing) * 1.5);
  background: none;
  border: 0;
  cursor: pointer;
  font-family: inherit;
  text-align: left;
}

.nav-dropdown__chevron {
  flex-shrink: 0;
  transition: transform 200ms ease;
}
.nav-dropdown__trigger[aria-expanded="true"] .nav-dropdown__chevron { transform: rotate(180deg); }

.nav-dropdown__trigger.is-current { color: var(--evergreen); }
.site-nav__link.nav-dropdown__trigger.is-current::after { transform: scaleX(1); }
.site-nav__link.nav-dropdown__trigger[aria-expanded="true"] { color: var(--evergreen); }

.nav-dropdown .nav-dropdown__panel[hidden] { display: none; }

.nav-dropdown__link:focus-visible,
.nav-dropdown__trigger:focus-visible {
  outline: 2px solid hsl(var(--ring));
  outline-offset: 3px;
}

/* Desktop panel */
.nav-dropdown--desktop .nav-dropdown__panel {
  position: absolute;
  top: 100%;
  left: calc(var(--spacing) * -4);
  z-index: 220;
  min-width: calc(var(--spacing) * 48);
  margin-top: calc(var(--spacing) * 2);
  padding: calc(var(--spacing) * 2);
  display: flex;
  flex-direction: column;
  background-color: var(--stone);
  border: 1px solid var(--rule-quiet);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  animation: nav-dropdown-in 160ms ease;
}
/* Hover bridge so the pointer can travel into the panel. */
.nav-dropdown--desktop .nav-dropdown__panel::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 100%;
  height: calc(var(--spacing) * 2);
}
.nav-dropdown--desktop .nav-dropdown__link {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-recessive);
  padding: calc(var(--spacing) * 2.5) calc(var(--spacing) * 3);
  border-radius: calc(var(--radius-card) / 2);
  white-space: nowrap;
}
.nav-dropdown--desktop .nav-dropdown__link:hover,
.nav-dropdown--desktop .nav-dropdown__link[aria-current="page"] {
  color: var(--evergreen);
  background-color: var(--sage-10);
  opacity: 1;
}

@keyframes nav-dropdown-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Mobile accordion */
.nav-dropdown--mobile { display: flex; flex-direction: column; }
.nav-dropdown--mobile .nav-dropdown__trigger {
  font-family: var(--font-serif);
  width: 100%;
  justify-content: space-between;
  min-height: 44px;
}
.nav-dropdown--mobile .nav-dropdown__chevron { width: 18px; height: 18px; }
.nav-dropdown--mobile .nav-dropdown__panel {
  display: flex;
  flex-direction: column;
  padding: calc(var(--spacing) * 2) 0 calc(var(--spacing) * 3) calc(var(--spacing) * 4);
  border-bottom: 1px solid var(--rule-quiet);
}
.nav-dropdown--mobile .nav-dropdown__link {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  color: hsl(var(--foreground));
  padding: calc(var(--spacing) * 2.5) 0;
  min-height: 44px;
}
.nav-dropdown--mobile .nav-dropdown__link:hover { color: hsl(var(--primary)); opacity: 1; }
.nav-dropdown--mobile .nav-dropdown__link[aria-current="page"] {
  color: hsl(var(--primary));
  font-style: italic;
}

@media (prefers-reduced-motion: reduce) {
  .nav-dropdown__chevron { transition: none; }
  .nav-dropdown--desktop .nav-dropdown__panel { animation: none; }
}