/* Appendix-specific styling — extends styles.css + methodology.css */

.appendix-main { max-width: 980px; }

.appendix-intro {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 18px;
  margin: 12px 0 16px;
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--border));
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--text);
}
.appendix-intro svg { color: var(--accent); flex-shrink: 0; margin-top: 2px; }
.appendix-intro strong { color: var(--text); }

.appendix-toc {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  align-items: center;
  padding: 12px 18px;
  margin: 16px 0 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 12px;
  position: sticky;
  top: 70px;
  z-index: 30;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
@media (max-width: 900px) {
  .appendix-toc { position: static; }
}
.appendix-toc strong { color: var(--text-2); font-weight: 600; }
.appendix-toc a {
  color: var(--accent);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  transition: background-color .15s;
}
.appendix-toc a:hover { background: var(--accent-soft); color: var(--accent-2); }

.apx-sub {
  margin: 22px 0 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0;
}

.eqn {
  background: var(--bg);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  color: var(--text);
  white-space: pre;
  margin: 12px 0;
}

.apx-tbl {
  width: 100%;
  font-size: 13px;
  margin: 8px 0 14px;
}
.apx-tbl thead th {
  background: var(--surface-elev);
  border-bottom: 1px solid var(--border-strong);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-2);
  padding: 10px 12px;
  text-align: left;
}
.apx-tbl tbody td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--border);
}
.apx-tbl .num { text-align: right; font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

.apx-dl-list { padding-left: 18px; }
.apx-dl-list li { margin: 6px 0; font-size: 13px; }
.apx-dl-list code { font-family: var(--font-mono); background: var(--surface-elev); padding: 2px 6px; border-radius: 4px; color: var(--accent); }

/* P1-A: mobile clipping fix for the appendix.
   Measured @ 390px: body scrollWidth = 986px due to wide formulas, code,
   and tables inside .explain cards leaking past the icon column. The grid
   needs `min-width: 0` on the content cell + scrollable overflow on the
   wide children. Below 600px the icon column collapses entirely.

   Round-5: also pin `.table-wrap` itself to `max-width: 100%` — without
   this the table-wrap inherits its child table's intrinsic width and
   pushes the page to 409px on a 390px viewport (17px residual bleed). */
.explain > *:not(.explain-icon) { min-width: 0; }
.explain pre, .explain code, .explain table, .apx-tbl { max-width: 100%; }
.explain .table-wrap { max-width: 100%; min-width: 0; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.explain pre, .eqn { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.explain table, .apx-tbl { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
@media (max-width: 600px) {
  .explain {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 16px;
  }
  .explain-icon { display: none; }
  .explain h2 { font-size: 17px; }
  .eqn, .explain pre { font-size: 11px; padding: 10px 12px; }
  .apx-tbl { font-size: 12px; }
  .apx-tbl thead th, .apx-tbl tbody td { padding: 8px 8px; }
  /* Section padding shrinks so prose runs edge-to-edge with breathing room. */
  section { padding-left: 12px; padding-right: 12px; }
}