/* Interactive widgets for the renormalisation-group course.
   Colours are tokens so the dark-mode switch (html.dark-mode) only has to
   swap variables; the canvases read the same tokens from JS. */

.rgw {
  --rg-bg: #fbfaf6;
  --rg-panel: #ffffff;
  --rg-ink: #1c1c1c;
  --rg-mute: #6b6b6b;
  --rg-line: #d9d4c7;
  --rg-blue: #1f4e9c;
  --rg-red: #c0392b;
  --rg-green: #1e8449;
  --rg-orange: #d35400;
  --rg-accent: #3c568e;

  position: relative;
  left: 50%;
  transform: translateX(-50%);
  width: min(94vw, var(--w, 860px));
  margin: 1.8rem 0;
  padding: 14px 16px 12px;
  background: var(--rg-bg);
  border: 1px solid var(--rg-line);
  border-radius: 10px;
  color: var(--rg-ink);
  font-size: 0.92rem;
  box-sizing: border-box;
}
html.dark-mode .rgw {
  --rg-bg: #201e1a;
  --rg-panel: #2a2722;
  --rg-ink: #ece6d8;
  --rg-mute: #a79f8e;
  --rg-line: #4a443a;
  --rg-blue: #7fa8ea;
  --rg-red: #ef7f72;
  --rg-green: #6fcf97;
  --rg-orange: #f5a25d;
  --rg-accent: #9fb4e0;
}

.rgw-title {
  font-weight: 600;
  font-size: 1rem;
  margin: 0 0 2px;
  color: var(--rg-accent);
}
.rgw-sub { color: var(--rg-mute); margin: 0 0 10px; font-size: 0.86rem; }

.rgw-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  align-items: center;
  margin-bottom: 10px;
}
.rgw-controls label { display: flex; align-items: center; gap: 8px; white-space: nowrap; }
.rgw-controls input[type=range] { width: 170px; accent-color: var(--rg-accent); }
.rgw-controls select {
  font: inherit; padding: 2px 6px; border-radius: 6px;
  background: var(--rg-panel); color: var(--rg-ink); border: 1px solid var(--rg-line);
}
.rgw-val { font-variant-numeric: tabular-nums; min-width: 3.6em; display: inline-block; }

.rgw button {
  font: inherit;
  font-size: 0.86rem;
  padding: 4px 12px;
  border-radius: 6px;
  border: 1px solid var(--rg-accent);
  background: transparent;
  color: var(--rg-accent);
  cursor: pointer;
}
.rgw button:hover { background: var(--rg-accent); color: var(--rg-bg); }
.rgw button.primary { background: var(--rg-accent); color: var(--rg-bg); }

.rgw-row { display: flex; flex-wrap: wrap; gap: 12px; }
.rgw-row > * { flex: 1 1 300px; min-width: 0; }

.rgw canvas {
  display: block;
  width: 100%;
  background: var(--rg-panel);
  border: 1px solid var(--rg-line);
  border-radius: 6px;
  touch-action: manipulation;
}

.rgw-readout {
  margin-top: 10px;
  font-variant-numeric: tabular-nums;
  line-height: 1.5;
  color: var(--rg-ink);
}
.rgw-readout b { color: var(--rg-accent); font-weight: 600; }

.rgw table.rgw-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
  margin: 0;
}
.rgw table.rgw-table th,
.rgw table.rgw-table td {
  border-bottom: 1px solid var(--rg-line);
  padding: 3px 6px;
  text-align: right;
  color: var(--rg-ink);
  background: transparent;
}
.rgw table.rgw-table th { color: var(--rg-mute); font-weight: 500; }
.rgw table.rgw-table tr.rgw-hi td { color: var(--rg-accent); font-weight: 600; }
.rgw-tablewrap { max-height: 240px; overflow: auto; }

.rgw-note { color: var(--rg-mute); font-size: 0.82rem; margin-top: 8px; }

@media (max-width: 560px) {
  .rgw { padding: 10px; }
  .rgw-controls input[type=range] { width: 120px; }
}