/* Hands-on figures (assets/js/widgets.js). */
/* ---- hands-on figures (assets/js/widgets.js) ---- */
.widget {
  margin: 0.8rem 0 1.6rem;
  border: 1px solid var(--rule);
  border-radius: 10px;
  background: color-mix(in srgb, var(--card) 80%, transparent);
  font-family: var(--font-sans);
}

.widget__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.3rem 0.6rem;
  padding: 0.6rem 0.9rem;
  cursor: pointer;
  list-style: none;
}

.widget__summary::-webkit-details-marker {
  display: none;
}

.widget__badge {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--course, var(--accent));
}

.widget__badge::before {
  content: "▸ ";
}

.widget[open] .widget__badge::before {
  content: "▾ ";
}

.widget__hint {
  font-size: 0.82rem;
  color: var(--ink-muted);
}

.widget__box {
  padding: 0.2rem 0.9rem 0.9rem;
}

.widget-ctls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.2rem;
  margin-bottom: 0.4rem;
}

.widget-ctl {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.82rem;
  color: var(--ink-muted);
}

.widget-ctl input[type="range"] {
  width: 9rem;
  accent-color: var(--course, var(--accent));
}

.widget-ctl select {
  padding: 0.2rem 0.3rem;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--bg);
  color: var(--ink);
  font: inherit;
}

.widget-ctl__val {
  min-width: 2.6rem;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}

.widget-canvas {
  display: block;
  max-width: 100%;
}

.widget-note {
  margin: 0.3rem 0 0;
  font-size: 0.82rem;
  color: var(--ink-muted);
}

.widget [hidden] {
  display: none !important;
}

.widget__summary::marker {
  content: "";
}

.study-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: var(--card);
  color: var(--ink);
  font: 600 0.85rem var(--font-sans);
  text-decoration: none;
  background-image: none !important;
  cursor: pointer;
}

.study-btn:hover {
  border-color: var(--ink-muted);
}