/* ============================================================
   nav.css — Nav with dropdown submenu
   ============================================================ */

/* Override default site-nav links to support submenu */
.site-nav__links {
  display: flex; gap: 28px; align-items: center; position: relative;
}

.has-submenu {
  position: relative;
}
.has-submenu > .nav-trigger {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 14px; font-weight: 500; color: var(--ink-soft);
  background: transparent; border: none; padding: 0;
  font-family: inherit; cursor: pointer;
  transition: color .2s ease;
}
.has-submenu > .nav-trigger:hover,
.has-submenu.is-open > .nav-trigger { color: var(--accent); }
.has-submenu > .nav-trigger::after {
  content: "▾"; font-size: 10px; opacity: 0.5; transition: transform .2s ease;
}
.has-submenu.is-open > .nav-trigger::after { transform: rotate(180deg); }

.submenu {
  position: absolute;
  top: calc(100% + 18px); left: -16px;
  min-width: 340px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 10px;
  box-shadow: 0 24px 60px -25px color-mix(in oklab, var(--ink) 35%, transparent);
  display: none;
  z-index: 110;
}
.has-submenu.is-open .submenu { display: block; }

.submenu__group { padding: 6px 0; }
.submenu__group + .submenu__group {
  border-top: 1px solid var(--line);
  margin-top: 6px; padding-top: 12px;
}
.submenu__group-label {
  display: block; padding: 4px 14px 8px;
  font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted);
}
.submenu a {
  display: grid; grid-template-columns: 38px 1fr; gap: 10px;
  padding: 10px 12px; border-radius: 12px;
  transition: background .15s ease;
  color: var(--ink);
}
.submenu a:hover { background: var(--bg-2); }
.submenu__icon {
  width: 38px; height: 38px; border-radius: 10px;
  background: color-mix(in oklab, var(--accent) 12%, var(--bg-2));
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); font-size: 16px;
}
.submenu__title { font-size: 15px; font-weight: 500; letter-spacing: -0.01em; }
.submenu__desc  { font-size: 12.5px; color: var(--muted); display: block; margin-top: 2px; }

@media (max-width: 900px) {
  .site-nav__links { display: none; }
}

/* Mobile menu (hamburger) */
.nav-burger {
  display: none;
  background: transparent; border: 1px solid var(--line);
  width: 38px; height: 38px; border-radius: 99px;
  align-items: center; justify-content: center;
  padding: 0; cursor: pointer;
  color: var(--ink);
}
.nav-burger svg { width: 16px; height: 16px; }
@media (max-width: 900px) {
  .nav-burger { display: inline-flex; }
}

.mobile-menu {
  position: fixed; inset: 64px 0 0 0;
  background: var(--bg);
  z-index: 99;
  padding: 32px 24px 80px;
  overflow-y: auto;
  display: none;
}
.mobile-menu.is-open { display: block; }
.mobile-menu ul {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 6px;
}
.mobile-menu a {
  display: block; padding: 16px 18px;
  background: var(--card); border: 1px solid var(--line);
  border-radius: 14px;
  font-size: 18px; font-weight: 500; letter-spacing: -0.01em;
}
.mobile-menu__group-label {
  display: block; padding: 18px 4px 8px;
  font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--muted);
}