/* Explainers: the /explainers index (in the homepage's dark lab theme) and the
   slim top bar and footer every explainer page shares. Each page brings its
   own design in explainers/<slug>.css; the shared chrome takes its colors from
   the page's theme through --xp-bg, --xp-fg and --xp-accent. */

/* ---- shared chrome on explainer pages ---------------------------------- */

.xp-host {
  min-height: 100vh;
  background: var(--xp-bg);
  color: var(--xp-fg);
}

.xp-bar {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  max-width: 72rem;
  margin: 0 auto;
  padding: 1rem 1.25rem;
  font: 13px/1.4 ui-monospace, "SF Mono", SFMono-Regular, Menlo, monospace;
  color: var(--xp-fg);
}

.xp-bar a {
  color: inherit;
  text-decoration: none;
  opacity: 0.75;
}

.xp-bar a:hover,
.xp-bar a:focus-visible {
  opacity: 1;
  color: var(--xp-accent);
}

.xp-bar__brand {
  font-weight: 600;
  opacity: 0.9 !important;
}

.xp-bar__sep {
  opacity: 0.35;
}

.xp-bar__date {
  margin-left: auto;
  opacity: 0.6;
}

.xp-foot {
  max-width: 72rem;
  margin: 4rem auto 0;
  padding: 2rem 1.25rem 3rem;
  border-top: 1px solid color-mix(in srgb, var(--xp-fg) 18%, transparent);
  font: 14px/1.6 ui-monospace, "SF Mono", SFMono-Regular, Menlo, monospace;
  color: var(--xp-fg);
}

.xp-foot__dates {
  margin: 0 0 1rem;
  opacity: 0.7;
}

.xp-foot__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.xp-foot__links a {
  color: var(--xp-accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.25em;
}

@media (max-width: 480px) {
  .xp-bar__date {
    display: none;
  }
}

/* ---- the /explainers index --------------------------------------------- */

.xp-index-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 640px) {
  .xp-index-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .xp-index-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.xp-index-card .lab-card-media {
  aspect-ratio: 16 / 9;
}

.xp-index-status {
  margin: 0.15rem 0 0;
  font-family: var(--lab-mono);
  font-size: 12px;
  color: var(--lab-amber);
}

.xp-index-empty {
  font-family: var(--lab-sans);
  font-size: 15px;
  color: var(--lab-dim);
}