/**
 * @file navigation.css
 * Verid — Navigation overrides
 *
 * Overrides Olivero's primary nav styles (nav-primary.css etc.)
 * to match the editorial minimal aesthetic: flat, clean links
 * with a subtle dropdown.
 *
 * Loaded via verid/navigation-overrides, which depends on
 * olivero/navigation-primary (so Olivero's JS still works).
 */

/* ─── Reset Olivero nav chrome ──────────────────────────── */

.nav--primary {
  display: flex;
  align-items: center;
}

/* Top-level menu */
.nav--primary .menu {
  display: flex;
  align-items: center;
  gap: var(--verid-space-1);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav--primary .menu-item {
  position: relative;
  margin: 0;
}

/* Top-level links */
.nav--primary .menu-item > a,
.nav--primary .menu-item > button,
.nav--primary .menu-item > span.nav-link {
  display: inline-flex;
  align-items: center;
  gap: var(--verid-space-2);
  padding: var(--verid-space-2) var(--verid-space-4);
  font-family: var(--verid-font-body);
  font-size: var(--verid-text-base);
  font-weight: 500;
  color: var(--verid-color-text-secondary);
  text-decoration: none;
  border-radius: var(--verid-radius);
  background: none;
  border: none;
  cursor: pointer;
  white-space: nowrap;
  transition: color var(--verid-transition-fast), background-color var(--verid-transition-fast);
}

.nav--primary .menu-item > a:hover,
.nav--primary .menu-item > button:hover {
  color: var(--verid-color-text);
  background-color: var(--verid-color-surface);
}

.nav--primary .menu-item > a.is-active,
.nav--primary .menu-item.menu-item--active-trail > a {
  color: var(--verid-color-accent);
  font-weight: 600;
}

/* Dropdown caret icon — Olivero adds a span.nav-link__chevron */
.nav--primary .nav-link__chevron {
  width: 12px;
  height: 12px;
  color: var(--verid-color-text-muted);
  transition: transform var(--verid-transition-fast);
}

.nav--primary .menu-item[aria-expanded="true"] .nav-link__chevron {
  transform: rotate(180deg);
}

/* ─── Dropdown panel ────────────────────────────────────── */

.nav--primary .menu-item .menu {
  display: none;
  position: absolute;
  top: calc(100% + var(--verid-space-2));
  left: 0;
  min-width: 220px;
  background-color: var(--verid-color-bg);
  border: 1px solid var(--verid-color-border);
  border-radius: var(--verid-radius-md);
  box-shadow: var(--verid-shadow-md);
  padding: var(--verid-space-2);
  flex-direction: column;
  gap: var(--verid-space-1);
  z-index: 300;

  /* Animation */
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity var(--verid-transition-fast), transform var(--verid-transition-fast);
  pointer-events: none;
}

/* Olivero opens dropdowns by setting aria-expanded */
.nav--primary .menu-item[aria-expanded="true"] > .menu,
.nav--primary .menu-item:focus-within > .menu {
  display: flex;
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* Dropdown links */
.nav--primary .menu-item .menu .menu-item > a {
  display: block;
  padding: var(--verid-space-3) var(--verid-space-4);
  font-size: var(--verid-text-sm);
  font-weight: 400;
  color: var(--verid-color-text);
  text-decoration: none;
  border-radius: var(--verid-radius);
  transition: background-color var(--verid-transition-fast);
  white-space: nowrap;
}

.nav--primary .menu-item .menu .menu-item > a:hover {
  background-color: var(--verid-color-surface);
  color: var(--verid-color-text);
}

.nav--primary .menu-item .menu .menu-item > a.is-active {
  color: var(--verid-color-accent);
  background-color: var(--verid-color-accent-light);
}

/* ─── Secondary nav (top bar, breadcrumb-like) ──────────── */

.nav--secondary {
  font-size: var(--verid-text-sm);
}

.nav--secondary .menu {
  display: flex;
  align-items: center;
  gap: var(--verid-space-4);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav--secondary .menu-item > a {
  color: var(--verid-color-text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--verid-transition-fast);
}

.nav--secondary .menu-item > a:hover {
  color: var(--verid-color-text);
}

/* ─── Mobile nav panel ───────────────────────────────────── */

@media (max-width: 960px) {
  /* Olivero collapses nav into a toggled panel — keep its logic,
     just restyle the revealed panel */

  #header-nav {
    background-color: var(--verid-color-bg) !important;
    border-top: 1px solid var(--verid-color-border);
  }

  .nav--primary .menu {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav--primary .menu-item > a,
  .nav--primary .menu-item > button {
    width: 100%;
    border-radius: 0;
    padding: var(--verid-space-4) var(--verid-space-5);
    border-bottom: 1px solid var(--verid-color-border-light);
    font-size: var(--verid-text-md);
  }

  /* Nested mobile dropdown — show inline, indented */
  .nav--primary .menu-item .menu {
    position: static;
    display: none;
    box-shadow: none;
    border: none;
    border-top: 1px solid var(--verid-color-border-light);
    border-radius: 0;
    padding: 0;
    padding-inline-start: var(--verid-space-6);
    background-color: var(--verid-color-surface);
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }

  .nav--primary .menu-item[aria-expanded="true"] > .menu {
    display: flex;
  }
}