/* ============================================================
   Mechanics reference series — shared components
   Links after course.css. Provides: analogy boxes, big-number
   callouts, numbered step flows, key-takeaway blocks, series nav,
   and the contents TOC.
   ============================================================ */

/* --- series eyebrow / part marker --- */
.part-marker {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--muted); margin: 0 0 0.5rem;
}
.part-marker .part-n { color: var(--accent); font-weight: 700; }

/* --- analogy box (the sink, the pile, the factory, the restaurant) --- */
.analogy {
  border: 1px solid var(--rule);
  border-left: 4px solid #3a6ea5;
  background: color-mix(in oklab, #3a6ea5 7%, transparent);
  border-radius: 0 10px 10px 0;
  padding: 0.9rem 1.2rem; margin: 1.6rem 0;
}
@media (prefers-color-scheme: dark) { .analogy { border-left-color: #6ea8e0; background: color-mix(in oklab, #6ea8e0 10%, transparent); } }
.analogy .label {
  font-family: ui-monospace, monospace; font-size: 0.68rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: #3a6ea5; display: block; margin-bottom: 0.35rem; font-weight: 700;
}
@media (prefers-color-scheme: dark) { .analogy .label { color: #6ea8e0; } }
.analogy p:first-of-type { margin-top: 0; }
.analogy p:last-child { margin-bottom: 0; }

/* --- big number callout --- */
.bignum {
  display: flex; align-items: baseline; gap: 0.8rem; flex-wrap: wrap;
  background: var(--panel); border: 1px solid var(--rule); border-radius: 10px;
  padding: 1rem 1.2rem; margin: 1.4rem 0;
}
.bignum .fig { font-family: ui-monospace, monospace; font-size: 2.1rem; font-weight: 700; color: var(--accent); line-height: 1; }
.bignum .fig.good { color: var(--good); }
.bignum .cap { color: var(--muted); font-size: 0.92rem; flex: 1; min-width: 12rem; }

/* --- numbered step flow --- */
ol.steps { list-style: none; counter-reset: step; padding: 0; margin: 1.4rem 0; }
ol.steps li {
  counter-increment: step; position: relative; padding: 0.35rem 0 0.9rem 2.6rem; margin: 0;
  border-left: 2px solid var(--rule); margin-left: 0.9rem;
}
ol.steps li:last-child { border-left-color: transparent; padding-bottom: 0; }
ol.steps li::before {
  content: counter(step); position: absolute; left: -0.95rem; top: 0.15rem;
  width: 1.8rem; height: 1.8rem; border-radius: 50%;
  background: var(--accent); color: #fff; font-family: ui-monospace, monospace;
  font-size: 0.85rem; font-weight: 700; display: flex; align-items: center; justify-content: center;
}
ol.steps.good li::before { background: var(--good); }

/* --- key takeaway --- */
.takeaway {
  border: 2px solid var(--accent); border-radius: 10px;
  padding: 0.9rem 1.2rem; margin: 2rem 0 1rem;
  background: color-mix(in oklab, var(--accent) 6%, transparent);
}
.takeaway .label {
  font-family: ui-monospace, monospace; font-size: 0.68rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--accent); display: block; margin-bottom: 0.3rem; font-weight: 700;
}
.takeaway p { margin: 0.3rem 0; }

/* --- series navigation bar --- */
.seriesnav {
  display: grid; grid-template-columns: 1fr auto 1fr; gap: 0.8rem; align-items: center;
  margin-top: 3rem; padding-top: 1.2rem; border-top: 1px solid var(--rule); font-size: 0.9rem;
}
.seriesnav a { border: none; }
.seriesnav .prev { text-align: left; }
.seriesnav .next { text-align: right; }
.seriesnav .mid  { text-align: center; color: var(--muted); }
.seriesnav .dir { display: block; font-family: ui-monospace, monospace; font-size: 0.66rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }

/* --- contents TOC --- */
ol.toc { list-style: none; counter-reset: toc; padding: 0; margin: 1.6rem 0; }
ol.toc li {
  counter-increment: toc; margin: 0.7rem 0; border: 1px solid var(--rule); border-radius: 10px;
  padding: 0.85rem 1.1rem 0.85rem 3.4rem; position: relative;
}
ol.toc li::before {
  content: counter(toc); position: absolute; left: 1rem; top: 0.9rem;
  font-family: ui-monospace, monospace; font-weight: 700; color: var(--accent); font-size: 1.1rem;
}
ol.toc a { font-weight: 650; font-size: 1.05rem; border: none; }
ol.toc .blurb { color: var(--muted); font-size: 0.9rem; margin-top: 0.15rem; }

/* --- inline "two pools" mini-legend --- */
.pools { display: grid; grid-template-columns: 1fr 1fr; gap: 0.9rem; margin: 1.4rem 0; }
@media (max-width: 560px) { .pools { grid-template-columns: 1fr; } }
.pools .pool { border: 1px solid var(--rule); border-radius: 10px; padding: 0.8rem 1rem; }
.pools .pool h4 { margin: 0 0 0.2rem; font-size: 0.95rem; }
.pools .pool .n { font-family: ui-monospace, monospace; font-size: 1.6rem; font-weight: 700; color: var(--accent); }
.pools .pool small { color: var(--muted); }