/* The hero, the single estimator and the static step/stride diagram in
 * "How Far Have You Walked in Your Lifetime?".
 *
 * Every rule is scoped to .post-page and an lw-* class, and every colour is a token from
 * styles.css, so the light, dark and Auto schemes follow automatically. The bar is a reading aid:
 * its segments and the table below it always carry the same numbers, so colour never carries an
 * answer alone.
 */

/* ---------------------------------------------------------------- The hero */

.post-page .lw-hero { margin: 26px 0; }
.post-page .lw-hero img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 2px);
  background: var(--accent);
}

/* ---------------------------------------------------------------- The estimator */

.post-page .lw-calc { padding: 22px; }
.post-page .lw-title { font-size: 1.2rem; line-height: 1.3; }
.post-page .lw-intro {
  max-width: 62ch;
  margin: -4px 0 20px;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--muted);
}

.post-page .lw-controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px 16px;
}
.post-page .lw-controls .field { margin-bottom: 12px; }

.post-page .lw-unit-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin: 0 0 18px;
}
.post-page .lw-unit-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
}
.post-page .lw-units { flex: 0 1 260px; margin: 0; min-width: 200px; }
.post-page .lw-units button { min-height: 40px; padding: 6px 10px; font-size: 0.88rem; }
.post-page .lw-units button:focus-visible {
  outline: 2px solid var(--highlight);
  outline-offset: 2px;
}

.post-page .lw-details {
  margin: 0 0 18px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--accent);
}
.post-page .lw-details summary {
  min-height: 48px;
  padding: 12px 14px;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
}
.post-page .lw-details summary:focus-visible {
  outline: 2px solid var(--highlight);
  outline-offset: 2px;
  border-radius: 12px;
}
.post-page .lw-details[open] summary { border-bottom: 1px solid var(--border); }
.post-page .lw-details-intro {
  max-width: 66ch;
  margin: 14px 14px 6px;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--muted);
}
.post-page .lw-stage {
  min-width: 0;
  margin: 0;
  padding: 12px 14px 4px;
  border: 0;
}
.post-page .lw-stage + .lw-stage { border-top: 1px solid var(--border); }
.post-page .lw-stage legend {
  padding: 0;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
}
.post-page .lw-readout-label {
  display: block;
  margin: 0 0 6px;
  font-size: 0.9rem;
  font-weight: 600;
}
.post-page .lw-readout {
  display: block;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  font-size: 1rem;
  font-variant-numeric: tabular-nums;
}

.post-page .lw-error { margin: 0 0 16px; }
.post-page .lw-error[hidden] { display: none; }

/* The result block. It is the one strong surface in the widget, and it holds the primary and
   secondary distances as separate values rather than making colour mean anything. */
.post-page .lw-results {
  margin: 0 0 20px;
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--accent);
}
.post-page .lw-results[hidden] { display: none; }
.post-page .lw-eyebrow {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.post-page .lw-primary {
  margin: 6px 0 0;
  font-size: clamp(2rem, 6vw, 3rem);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.post-page .lw-primary strong { font-weight: 800; color: var(--primary); }
.post-page .lw-secondary {
  margin: 2px 0 0;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.post-page .lw-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}
.post-page .lw-fact,
.post-page .lw-compare { margin: 0; font-size: 0.9rem; line-height: 1.5; }
.post-page .lw-fact-label { color: var(--muted); }
.post-page .lw-fact strong,
.post-page .lw-compare strong { font-variant-numeric: tabular-nums; }
.post-page .lw-compare-note {
  margin: 8px 0 0;
  font-size: 0.8rem;
  line-height: 1.45;
  color: var(--muted);
}

.post-page .lw-empty {
  margin: 0 0 18px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--accent);
  font-size: 0.9rem;
  line-height: 1.55;
}
.post-page .lw-empty[hidden] { display: none; }

/* ---------------------------------------------------------------- The chapter breakdown */

.post-page .lw-breakdown { margin: 4px 0 20px; }
.post-page .lw-breakdown[hidden] { display: none; }
.post-page .lw-breakdown-title { margin: 0 0 4px; font-size: 1rem; }
.post-page .lw-breakdown-caption {
  max-width: 66ch;
  margin: 0 0 12px;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--muted);
}
.post-page .lw-bar {
  display: flex;
  width: 100%;
  height: 22px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--card);
}
.post-page .lw-seg {
  display: block;
  width: 0;
  height: 100%;
  transition: width 240ms ease;
}
.post-page .lw-seg-early { background: var(--muted); }
.post-page .lw-seg-school { background: var(--primary); }
.post-page .lw-seg-adult { background: var(--highlight); }
.post-page .lw-table {
  width: 100%;
  margin: 12px 0 0;
  border-collapse: collapse;
  font-size: 0.88rem;
}
.post-page .lw-table th,
.post-page .lw-table td {
  padding: 7px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}
.post-page .lw-table thead th {
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}
.post-page .lw-table th:not(:first-child),
.post-page .lw-table td:not(:first-child) {
  text-align: right;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.post-page .lw-table tbody tr:last-child th,
.post-page .lw-table tbody tr:last-child td { border-bottom: 0; }

.post-page .lw-actions { margin: 0 0 16px; }
.post-page .lw-actions .btn-secondary { min-height: 44px; }
.post-page .lw-footnote {
  max-width: 70ch;
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--muted);
}

/* ---------------------------------------------------------------- The step/stride diagram */

.post-page .lw-stride {
  margin: 26px 0;
  padding: 18px 16px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
}
.post-page .lw-stride-track {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: end;
  max-width: 560px;
  margin: 0 auto;
}
.post-page .lw-footfall {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  min-width: 0;
}
.post-page .lw-footfall + .lw-footfall::before {
  content: "→";
  position: absolute;
  left: 0;
  bottom: 18px;
  transform: translateX(-50%);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--muted);
}
.post-page .lw-foot {
  width: 38px;
  height: 57px;
  fill: var(--primary);
}
.post-page .lw-footfall-right .lw-foot { fill: var(--highlight); transform: scaleX(-1); }
.post-page .lw-foot-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--muted);
}

.post-page .lw-brackets { max-width: 560px; margin: 14px auto 0; }
.post-page .lw-bracket {
  position: relative;
  height: 28px;
  border-top: 2px solid var(--border);
}
.post-page .lw-bracket::before,
.post-page .lw-bracket::after {
  content: "";
  position: absolute;
  top: -2px;
  width: 2px;
  height: 8px;
  background: var(--border);
}
.post-page .lw-bracket::before { left: 0; }
.post-page .lw-bracket::after { right: 0; }
.post-page .lw-bracket-step { width: 33.3334%; margin-left: 16.6667%; }
.post-page .lw-bracket-stride { width: 66.6668%; margin-left: 16.6667%; }
.post-page .lw-bracket-label {
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--muted);
}
.post-page .lw-stride figcaption {
  max-width: 60ch;
  margin: 14px auto 0;
  font-size: 0.85rem;
  line-height: 1.55;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 760px) {
  .post-page .lw-calc { padding: 16px; }
  .post-page .lw-controls { grid-template-columns: 1fr; }
  .post-page .lw-unit-row { align-items: flex-start; }
  .post-page .lw-units { flex: 1 1 100%; }
  .post-page .lw-primary { font-size: clamp(1.8rem, 9vw, 2.6rem); }
}

@media (max-width: 560px) {
  .post-page .lw-stage .row { grid-template-columns: 1fr; }
  .post-page .lw-stage .row .field { margin-bottom: 12px; }
  .post-page .lw-foot { width: 30px; height: 45px; }
  .post-page .lw-footfall + .lw-footfall::before { bottom: 15px; }
  .post-page .lw-bracket-label { font-size: 0.72rem; }
  .post-page .lw-table th,
  .post-page .lw-table td { padding: 6px 6px; }
}

@media (prefers-reduced-motion: reduce) {
  .post-page .lw-seg { transition: none; }
}