/* ============================================================
   Just Practice — shared REVISE-BY-READING chapter navigation
   Canonical reference: economics/macro/government-budget-concepts/
   Rendered by /assets/revise-nav.js from a per-subject manifest.

   Classes are namespaced `rn-` so they never collide with a page's
   own .ch-nav / .all-chapters styles. Per-cluster colour comes from
   the manifest as inline --rn-g / --rn-g-soft.
   ============================================================ */
.rn-ch-nav {
  display: flex; justify-content: space-between; gap: 12px;
  margin-top: 48px; padding-top: 24px;
  border-top: 1px solid var(--rn-border, #e1e4ea);
  flex-wrap: wrap;
}
.rn-ch-nav-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px; border-radius: 8px;
  font-size: 13.5px; font-weight: 600; text-decoration: none;
  background: var(--rn-surface, #fff);
  border: 1px solid var(--rn-border, #e1e4ea);
  color: var(--rn-text, #1a1d23);
  transition: all .12s; max-width: 48%;
}
.rn-ch-nav-btn:hover { background: var(--rn-surface2, #f0f2f5); border-color: var(--rn-border, #e1e4ea); }
.rn-ch-nav-btn.rn-next { margin-left: auto; text-align: right; }
.rn-ch-nav-btn.rn-disabled { opacity: .4; pointer-events: none; cursor: default; }

.rn-all-chapters {
  margin-top: 48px; padding-top: 32px;
  border-top: 1px solid var(--rn-border, #e1e4ea);
}
.rn-ac-head {
  font-size: 12px; font-weight: 700; margin-bottom: 16px;
  color: var(--rn-muted, #6b7280);
  text-transform: uppercase; letter-spacing: .6px;
}
.rn-cluster { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media (max-width: 600px) { .rn-cluster { grid-template-columns: 1fr; } }
.rn-col { display: flex; flex-direction: column; gap: 4px; }
.rn-head {
  font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .5px;
  padding: 6px 10px; border-radius: 6px; margin-bottom: 6px;
  background: var(--rn-g-soft, #f0f2f5);
  color: var(--rn-g, #374151);
}
.rn-col a {
  display: block; padding: 7px 10px; font-size: 13px;
  color: var(--rn-text, #1a1d23); text-decoration: none;
  border-radius: 6px; transition: background .12s;
}
.rn-col a:hover { background: var(--rn-surface2, #f0f2f5); }
.rn-col a.rn-current {
  background: var(--rn-surface, #fff); font-weight: 600;
  border: 1px solid var(--rn-border, #e1e4ea);
  cursor: default; pointer-events: none;
}