/* ══════════════════════════════════════════════════════
   ABOUT TAB — sub-model grid (collapses on mobile)
   ══════════════════════════════════════════════════════ */
.about-submodels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 18px;
}
@media (max-width: 639px) {
  .about-submodels { grid-template-columns: 1fr; gap: 12px; }
}

/* ══════════════════════════════════════════════════════
   PERFORMANCE TAB — tournament-results table (mobile cards)
   Direct port of round-4 .tourney-table flip pattern.
   ══════════════════════════════════════════════════════ */
@media (max-width: 639px) {
  #perfTable { overflow-x: visible !important; }
  #perfTable table { display: block; min-width: 0; }
  #perfTable thead { display: none; }
  #perfTable tbody { display: block; }
  #perfTable tr {
    display: block;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: var(--s-3);
    padding: var(--s-3) var(--s-4);
  }
  #perfTable td {
    display: flex; justify-content: space-between; align-items: center;
    gap: var(--s-3); padding: 4px 0;
    border-bottom: 1px solid var(--border-light);
    font-size: var(--fs-3); text-align: left !important;
    white-space: normal !important;
  }
  #perfTable td::before {
    content: attr(data-label);
    font-size: var(--fs-1); color: var(--muted);
    text-transform: uppercase; letter-spacing: 1px; font-weight: 700;
    flex-shrink: 0;
  }
  #perfTable td:first-child {
    flex-direction: column; align-items: flex-start; gap: 2px;
    padding-top: 0; padding-bottom: var(--s-2); margin-bottom: var(--s-2);
    border-bottom: 1px solid var(--border);
    font-weight: 700; font-size: 1rem;
  }
  #perfTable td:first-child::before { display: none; }
  #perfTable td:last-child { border-bottom: none; }
}

/* ══════════════════════════════════════════════════════
   PERFORMANCE TAB
   ══════════════════════════════════════════════════════ */
.perf-grade-card {
  flex: 0 0 auto;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 28px 36px;
  background: rgba(240,192,64,.06);
  border: 1px solid rgba(240,192,64,.2);
  border-radius: 16px;
  min-width: 140px;
}
.perf-charts-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 16px; margin-bottom: 22px;
}
@media (max-width: 639px) {
  .perf-charts-grid { grid-template-columns: 1fr; }
  .perf-grade-card { padding: 20px 24px; }
}

/* ── Narrow-phone card padding tightening (< 420px) ── */
@media (max-width: 419px) {
  .chart-card, .panel { padding: var(--s-3); }
  .mini-card { padding: var(--s-3); }
  .kpi-card { padding: var(--s-2) var(--s-3); }
  .hero-label { letter-spacing: 1.2px; }
}