/* Catalogue navigation follows atmarcus.net/architecture: delayed .5s rail,
   1024px hamburger breakpoint, .25s bars and .3s bottom-sheet motion. */
.catalog-nav__panel { position: fixed; right: calc(50% + 28rem); top: 110px; width: 10rem; max-height: calc(100dvh - 130px); overflow-y: auto; z-index: 25; text-align: right; font-family: var(--mono); font-size: .72rem; letter-spacing: .04em; opacity: 0; visibility: hidden; pointer-events: none; transition: opacity .5s ease, visibility .5s; }
.catalog-nav.is-visible .catalog-nav__panel { opacity: 1; visibility: visible; pointer-events: auto; }
.catalog-nav__title { font-family: var(--sans); font-size: .7rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-muted); margin: 0 .75rem .4rem 0; }
.catalog-nav__group + .catalog-nav__group { margin-top: .75rem; }
.catalog-nav__group-title { margin: 0 .75rem .2rem 0; font-size: .7rem; color: var(--ink-muted); }
.catalog-nav__link { display: block; padding: .28rem .75rem .28rem 0; min-height: 2rem; border-right: 2px solid transparent; color: var(--ink-muted); line-height: 1.5; transition: color .15s; }
.catalog-nav__link:hover { color: var(--ink); }
.catalog-nav__link[aria-current="location"] { color: var(--ink); border-right-color: var(--accent); font-weight: 500; }
.catalog-nav__count { white-space: nowrap; }
.catalog-nav__count::before { content: "("; }
.catalog-nav__count::after { content: ")"; }
.catalog-nav__toggle, .catalog-nav__backdrop, .catalog-nav__handle, .catalog-nav__close { display: none; }
[data-catalog-section] { scroll-margin-top: 130px; }
[data-catalog-section]:focus { outline: none; }
[data-catalog-section]:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.catalog-fallback { margin-block: 1.5rem; }
.catalog-fallback summary { cursor: pointer; color: var(--accent); }
.catalog-fallback .catalog-nav__link { border: 0; text-align: left; color: var(--accent); }
@media (min-width: 1024px) and (max-width: 1299px) {
  .catalog-nav__panel { left: 1.25rem; right: auto; text-align: left; }
  .catalog-nav__link { padding: .28rem 0 .28rem .75rem; border-right: 0; border-left: 2px solid transparent; }
  .catalog-nav__link[aria-current="location"] { border-left-color: var(--accent); }
  .catalog-nav__title, .catalog-nav__group-title { margin-left: .75rem; margin-right: 0; }
  .has-catalog-nav > .shell { margin-left: 12.5rem; margin-right: 1.5rem; padding: 0; max-width: none; }
}
@media (max-width: 1023px) {
  .catalog-nav__toggle { position: fixed; left: 1rem; top: calc(var(--topbar-h) + 11px); z-index: 42; width: 44px; height: 44px; padding: 0; border-radius: 50%; border: 1px solid var(--rule); background: color-mix(in srgb, var(--ground) 94%, transparent); backdrop-filter: blur(8px); box-shadow: 0 4px 12px rgb(0 0 0 / 8%); cursor: pointer; display: flex; align-items: center; justify-content: center; flex-direction: column; gap: 4px; }
  .catalog-nav__toggle span { display: block; width: 16px; height: 2px; border-radius: 1px; background: var(--accent); transition: transform .25s, opacity .25s; }
  .catalog-nav.is-open .catalog-nav__toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .catalog-nav.is-open .catalog-nav__toggle span:nth-child(2) { opacity: 0; }
  .catalog-nav.is-open .catalog-nav__toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  .catalog-nav__backdrop { display: block; position: fixed; inset: 0; z-index: 40; background: rgb(0 0 0 / 30%); opacity: 0; visibility: hidden; transition: opacity .25s, visibility .25s; }
  .catalog-nav.is-open .catalog-nav__backdrop { opacity: 1; visibility: visible; }
  .catalog-nav__panel, .catalog-nav.is-visible .catalog-nav__panel { left: 0; right: 0; top: auto; bottom: 0; width: auto; max-height: 80dvh; padding: 1.25rem 1.5rem max(2rem, env(safe-area-inset-bottom)); z-index: 41; background: var(--ground); border-top: 2px solid var(--accent); border-radius: 12px 12px 0 0; text-align: left; font-size: .85rem; opacity: 1; visibility: hidden; pointer-events: none; transform: translateY(100%); transition: transform .3s cubic-bezier(.32,.72,0,1), visibility .3s; }
  .catalog-nav.is-open .catalog-nav__panel { visibility: visible; transform: translateY(0); pointer-events: auto; }
  .catalog-nav__handle { display: block; width: 36px; height: 4px; border-radius: 2px; margin: 0 auto 1rem; background: var(--rule); }
  .catalog-nav__heading { display: flex; justify-content: space-between; align-items: center; }
  .catalog-nav__close { display: block; min-height: 44px; border: 0; padding: .5rem; background: transparent; color: var(--accent); cursor: pointer; }
  .catalog-nav__title { margin: 0; }
  .catalog-nav__group-title { margin: .5rem 0 .2rem .75rem; }
  .catalog-nav__link { padding: .6rem 0 .6rem .75rem; min-height: 44px; border-right: 0; border-left: 2px solid transparent; border-bottom: 1px solid var(--rule); }
  .catalog-nav__link[aria-current="location"] { border-left-color: var(--accent); }
  .has-catalog-nav .main { padding-top: 5rem; }
  body.catalog-menu-open { overflow: hidden; }
}
@media (prefers-reduced-motion: reduce) {
  .catalog-nav__panel, .catalog-nav__backdrop, .catalog-nav__toggle span { transition: none !important; }
}