/* ---------------------------------------------------------------
   The menu panel.

   Full-screen overlay on the ink ground. Every entry is a section that
   exists on this page — there is no docs site behind any of them yet.
   --------------------------------------------------------------- */

.menu {
  position: fixed;
  inset: 0;
  z-index: 95; /* under the masthead (100) so the toggle stays clickable */
  display: grid;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--d-reveal) var(--ease-out),
    visibility 0s linear var(--d-reveal);
}

.menu[data-open="true"] {
  opacity: 1;
  visibility: visible;
  transition:
    opacity var(--d-reveal) var(--ease-out),
    visibility 0s;
}

.menu__nav {
  padding-block: 6rem 4rem;
}

.menu__list {
  list-style: none;
  margin: 0 0 3rem;
  padding: 0;
}

.menu__item {
  border-top: 1px solid var(--rule-on-ink);
}

.menu__item:last-child {
  border-bottom: 1px solid var(--rule-on-ink);
}

.menu__link {
  display: flex;
  align-items: baseline;
  gap: clamp(1rem, 3vw, 3rem);
  padding-block: clamp(0.6rem, 1.4vw, 1.1rem);
  text-decoration: none;
  color: var(--on-ink);
  transition: color var(--d-hover) var(--ease-out);
}

.menu__link:hover,
.menu__link:focus-visible {
  color: var(--orchid);
}

.menu__num {
  flex: 0 0 auto;
  color: var(--on-ink-quiet);
  transition: color var(--d-hover) var(--ease-out);
}

.menu__link:hover .menu__num {
  color: var(--orchid);
}

/* Inherits the colour of the link rather than the display default, which is
   what lets the whole row change together on hover. */
.menu__word {
  color: inherit;
}

.menu__note {
  color: var(--on-ink-quiet);
  margin: 0;
}

/* Rows arrive one after another once the panel is open. */
.menu__item {
  opacity: 0;
  transform: translateY(0.75rem);
  transition:
    opacity var(--d-reveal) var(--ease-out),
    transform var(--d-reveal) var(--ease-out);
}

.menu[data-open="true"] .menu__item {
  opacity: 1;
  transform: none;
}

.menu[data-open="true"] .menu__item:nth-child(1) { transition-delay: 0.06s; }
.menu[data-open="true"] .menu__item:nth-child(2) { transition-delay: 0.12s; }
.menu[data-open="true"] .menu__item:nth-child(3) { transition-delay: 0.18s; }
.menu[data-open="true"] .menu__item:nth-child(4) { transition-delay: 0.24s; }
.menu[data-open="true"] .menu__item:nth-child(5) { transition-delay: 0.3s; }

/* The toggle's glyph turns into a close mark while the panel is open. */
.masthead__menu[aria-expanded="true"] .plus-link__box {
  background: var(--orchid);
  border-color: var(--orchid);
  color: var(--ink);
}

@media (prefers-reduced-motion: reduce) {
  .menu,
  .menu__item {
    transition: none;
  }

  .menu[data-open="true"] .menu__item {
    transition-delay: 0s;
  }
}