/* HYPERPART: navigation-menu */
/*
 * Top navigation mega-menu — horizontal site/product nav (distinct from
 * menubar File/Edit/View and from app-shell's sidebar). Each trigger is a
 * native details/summary; open panel is a multi-column mega list.
 * Exclusive open + outside dismiss: controllers/dz-navigation-menu.js.
 * Gated by gallery probes navigation_menu.exclusive_open /
 * navigation_menu.dismiss_outside (packages/hatchi-maxchi/tools/gallery_probes.py).
 *
 * Disclosure chrome: CSS chevron on the trigger (::after), same family as
 * accordion — not a Unicode ▾ span (stem: affordance-disclosure-chrome).
 */

.dz-navigation-menu {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 0;
  width: 100%;
  border-bottom: 1px solid var(--colour-border);
  background: var(--colour-surface);
  padding-inline: var(--space-sm);
}

.dz-navigation-menu__list {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.dz-navigation-menu__item {
  position: relative;
}

.dz-navigation-menu__link,
.dz-navigation-menu__trigger {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  min-height: 2.75rem;
  padding-inline: var(--space-md);
  border: none;
  background: transparent;
  color: var(--colour-text);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  text-decoration: none;
  cursor: pointer;
  border-radius: var(--radius-sm);
  list-style: none;
}

.dz-navigation-menu__trigger::-webkit-details-marker {
  display: none;
}

/* CSS chevron — inherits currentColor; rotates when the branch is open.
 * Sized in rem (not em-of-label) so the affordance stays peer to the label
 * (stem: affordance-disclosure-chrome). */
.dz-navigation-menu__trigger::after {
  content: "";
  flex: none;
  width: 1rem;
  height: 1rem;
  background: currentColor;
  opacity: 0.65;
  -webkit-mask: center / contain no-repeat
    url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="m6 9 6 6 6-6"/></svg>');
  mask: center / contain no-repeat
    url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="m6 9 6 6 6-6"/></svg>');
  transition: transform var(--duration-base, 150ms) var(--ease-out, ease);
}

.dz-navigation-menu__branch[open] > .dz-navigation-menu__trigger::after,
details.dz-navigation-menu__branch[open] > .dz-navigation-menu__trigger::after {
  transform: rotate(180deg);
}

.dz-navigation-menu__item[open] > .dz-navigation-menu__trigger,
.dz-navigation-menu__link:hover,
.dz-navigation-menu__trigger:hover,
.dz-navigation-menu__link[aria-current="page"] {
  background: var(--colour-surface-muted);
  color: var(--colour-text);
}

/* Open branch: surface highlight on trigger (details is the open element) */
.dz-navigation-menu__branch[open] > .dz-navigation-menu__trigger {
  background: var(--colour-surface-muted);
  color: var(--colour-text);
}

.dz-navigation-menu__link:focus-visible,
.dz-navigation-menu__trigger:focus-visible {
  outline: 2px solid var(--colour-brand);
  outline-offset: 2px;
}

.dz-navigation-menu__panel {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 30;
  min-width: 16rem;
  max-width: min(36rem, 90vw);
  margin-top: 0;
  padding: var(--space-md);
  border: 1px solid var(--colour-border);
  border-radius: var(--radius-md);
  background: var(--colour-surface);
  box-shadow: var(--shadow-md, 0 4px 16px color-mix(in oklab, #000 12%, transparent));
}

.dz-navigation-menu__panel[data-dz-layout="mega"] {
  display: grid;
  grid-template-columns: repeat(2, minmax(10rem, 1fr));
  gap: var(--space-md) var(--space-lg);
  min-width: 24rem;
}

.dz-navigation-menu__group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
  min-width: 0;
}

.dz-navigation-menu__group-title {
  margin: 0 0 var(--space-2xs);
  padding-inline: var(--space-xs);
  font-size: var(--text-xs, 0.75rem);
  font-weight: var(--weight-semibold, 600);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--colour-text-muted, var(--colour-text-secondary, #6b7280));
}

.dz-navigation-menu__panel a {
  display: block;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  color: var(--colour-text);
  font-size: var(--text-sm);
  text-decoration: none;
}

.dz-navigation-menu__panel a:hover {
  background: var(--colour-surface-muted);
}

.dz-navigation-menu__panel a small {
  display: block;
  margin-top: 0.125rem;
  font-size: var(--text-xs, 0.75rem);
  font-weight: normal;
  color: var(--colour-text-muted, var(--colour-text-secondary, #6b7280));
}

@media (prefers-reduced-motion: reduce) {
  .dz-navigation-menu__trigger::after {
    transition: none;
  }
}