/*
 * P5.A.1 — Mega-menu component styles
 *
 * Single-trigger consolidated nav that replaces the 7-dropdown layout
 * for opted-in users. Token-based (assets/css/tokens.css), BEM,
 * responsive (3 breakpoints: ≥1280 7col / 1024-1279 4col / 768-1023 2col
 * / <768 hidden, mobile menu takes over).
 *
 * Loaded conditionally via $page_css when useMegaMenu() returns true.
 */

/* ── Wrapper ──────────────────────────────────────────────────────── */
.topbar-mega {
  position: relative;
}

/* ── Trigger button ──────────────────────────────────────────────── */
.topbar-mega__trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: var(--fs-sm);
  font-weight: 500;
  cursor: pointer;
  transition: background-color .15s var(--ease-smooth), border-color .15s var(--ease-smooth);
}
.topbar-mega__trigger:hover,
.topbar-mega__trigger:focus-visible {
  background: var(--border);
}
.topbar-mega__trigger[aria-expanded="true"] {
  background: var(--accent-glow-08);
  border-color: var(--accent-glow-20);
}
.topbar-mega__trigger .nav-icon--chevron {
  transition: transform .2s var(--ease-smooth);
}
.topbar-mega__trigger[aria-expanded="true"] .nav-icon--chevron {
  transform: rotate(180deg);
}

/* ── Panel ────────────────────────────────────────────────────────── */
.topbar-mega__panel {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-dropdown);

  min-width: 1100px;
  max-width: 95vw;
  padding: var(--space-card);

  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  box-shadow:
    0 1px 3px var(--black-25),
    0 16px 48px var(--black-50);

  opacity: 0;
  pointer-events: none;
  transform: translateX(-50%) translateY(-4px);
  transition: opacity .18s var(--ease-smooth), transform .18s var(--ease-smooth);
}
.topbar-mega__panel:not([hidden]) {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

/* ── Grid: 7 columns at desktop ──────────────────────────────────── */
.topbar-mega__grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: var(--space-stack);
}

/* ── Column ──────────────────────────────────────────────────────── */
.topbar-mega__col {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.topbar-mega__col-head {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--border);

  font-size: var(--fs-2xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--muted2);
}
.topbar-mega__col-head svg { color: var(--accent); }

.topbar-mega__items {
  list-style: none;
  margin: 0 0 var(--space-3);
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

/* ── Item ────────────────────────────────────────────────────────── */
.topbar-mega__item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  color: var(--text2);
  text-decoration: none;
  font-size: var(--fs-sm);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: background-color .12s var(--ease-smooth), color .12s var(--ease-smooth);
}
.topbar-mega__item:hover,
.topbar-mega__item:focus-visible {
  background: var(--border);
  color: var(--text);
}
.topbar-mega__item.is-active {
  background: var(--accent-glow-08);
  color: var(--accent);
}
.topbar-mega__item .nav-icon {
  flex-shrink: 0;
  opacity: .55;
}
.topbar-mega__item:hover .nav-icon,
.topbar-mega__item.is-active .nav-icon {
  opacity: 1;
}
.topbar-mega__item span {
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Column footer "All X →" ─────────────────────────────────────── */
.topbar-mega__col-footer {
  display: inline-flex;
  align-items: center;
  margin-top: auto;
  padding: 6px 8px;
  border-top: 1px dashed var(--border);
  color: var(--accent);
  text-decoration: none;
  font-size: var(--fs-xs);
  font-weight: 600;
  transition: color .12s var(--ease-smooth);
}
.topbar-mega__col-footer:hover,
.topbar-mega__col-footer:focus-visible {
  color: var(--text);
}

/* ── Catalogue link (full-width footer) ──────────────────────────── */
.topbar-mega__catalogue-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: var(--space-stack);
  padding: var(--space-3);
  background: var(--accent-glow-08);
  border: 1px solid var(--accent-glow-20);
  border-radius: var(--radius-sm);
  color: var(--accent);
  text-decoration: none;
  font-size: var(--fs-sm);
  transition: background-color .12s var(--ease-smooth);
}
.topbar-mega__catalogue-link:hover,
.topbar-mega__catalogue-link:focus-visible {
  background: var(--accent-glow-12);
}

/* ── Responsive: collapse columns ────────────────────────────────── */
@media (max-width: 1279px) {
  .topbar-mega__panel { min-width: 920px; }
  .topbar-mega__grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (max-width: 1023px) {
  .topbar-mega__panel { min-width: 640px; }
  .topbar-mega__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
/* Hide entirely below tablet — mobile menu takes over (unchanged) */
@media (max-width: 768px) {
  .topbar-mega { display: none !important; }
}