/* ── Quiet ledger nav — present but never louder than the opening ──
   Shared site-wide component. Requires elemental-tokens.css.
   Everything here resolves from the theme × register tokens, so the bar
   follows its page's ground in either theme with no per-page variant. */

.ledger {
  position: sticky; top: 0; z-index: 40;
  background: var(--ground);                                   /* fallback */
  background: color-mix(in srgb, var(--ground) 82%, transparent);
  backdrop-filter: blur(7px); -webkit-backdrop-filter: blur(7px);
  border-bottom: 1px solid var(--rule);
}
.ledger-inner {
  max-width: 1060px; margin: 0 auto; padding: 13px 30px;
  display: flex; align-items: center; gap: 16px;
  font-family: var(--font-scribe); font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
}
.ledger-inner .home { display: flex; align-items: center; gap: 8px; color: var(--ink-on); text-decoration: none; }
.ledger-inner .home .star { color: var(--accent-on); font-family: var(--font-oracle); font-size: 13px; }
.ledger-inner .home .dots { display: flex; gap: 4px; }
.ledger-inner .home .dots i { width: 5px; height: 5px; border-radius: 50%; display: block; }
.ledger-links { margin-left: auto; display: flex; gap: 22px; }
.ledger-links a {
  color: var(--ink-on); opacity: 0.62; text-decoration: none;
  transition: color var(--t-state) var(--ease-precipitate), opacity var(--t-state) var(--ease-precipitate);
}
.ledger-links a:hover { color: var(--accent-on); opacity: 1; }

/* ── Theme switch — a keyline cell showing the ground you'd move to.
   Square, hairline, colour-only ignition; no chrome, no track, no slider. ── */
.theme-toggle {
  flex: 0 0 auto; margin-left: 18px;
  width: 26px; height: 22px; padding: 0;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent; border: 1px solid var(--rule); border-radius: 0;
  color: var(--ink-on); opacity: 0.62; cursor: pointer;
  font-family: var(--font-oracle); font-size: 13px; line-height: 1;
  transition: color var(--t-state) var(--ease-precipitate),
              border-color var(--t-state) var(--ease-precipitate),
              opacity var(--t-state) var(--ease-precipitate);
}
.theme-toggle:hover { color: var(--accent-on); border-color: var(--accent-on); opacity: 1; }
.theme-toggle:focus-visible { outline: 1px solid var(--accent-on); outline-offset: 2px; }

/* Pages with the ledger keep their quiet back links, shifted below the bar */
.ledger ~ .back, .ledger ~ .back-cluster { top: 74px; }
@media (max-width: 640px) {
  .ledger ~ .back, .ledger ~ .back-cluster { top: 64px; }
}

/* Narrow: the links stay — they scroll sideways rather than vanish. Hiding navigation on
   phones left every inner page a dead end. No chrome, no toggle; the row just slides.
   The theme switch sits outside the scroller so it stays reachable. */
@media (max-width: 860px) {
  .ledger-inner { gap: 12px; padding: 12px 18px; }
  .ledger-links {
    gap: 18px; overflow-x: auto; flex-wrap: nowrap;
    scrollbar-width: none; -ms-overflow-style: none;
    -webkit-overflow-scrolling: touch;
    mask-image: linear-gradient(to right, #000 calc(100% - 16px), transparent 100%);
    -webkit-mask-image: linear-gradient(to right, #000 calc(100% - 16px), transparent 100%);
  }
  .ledger-links::-webkit-scrollbar { display: none; }
  .ledger-links a { white-space: nowrap; }
  .ledger-inner .home span:not(.star):not(.dots) { display: none; }  /* mark + dots carry it */
  .theme-toggle { margin-left: 10px; }
}