#panel-math.panel[hidden] {
  display: none !important;
}

#panel-math.panel.active {
  display: block;
  padding: 0;
  margin: 0;
}

.mx-shell {
  padding: 1.25rem 1.4rem 2.5rem;
  color: var(--text);
  max-width: 100%;
  min-width: 0;
}

.mx-head h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.7rem;
  margin: 0 0 0.3rem;
}

.mx-hint,
.mx-orbit,
.mx-statement {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.4;
}

.mx-hint {
  max-width: 44rem;
}

.mx-lab {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(18rem, 0.85fr);
  gap: 1rem;
  align-items: start;
  margin-top: 0.9rem;
  min-width: 0;
}

.mx-stage,
.mx-side {
  min-width: 0;
}

.mx-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.45rem 0.8rem;
  margin-bottom: 0.45rem;
}

.mx-bar p {
  margin: 0;
}

#mx-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.35rem;
}

#mx-count {
  color: var(--text-muted);
  font-size: 0.78rem;
}

.mx-actions-top,
.mx-actions,
.mx-switches,
.mx-curriculum {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.mx-actions-top button,
.mx-actions button,
.mx-switches button,
.mx-curriculum button,
.mx-choices button,
#mx-clear {
  font: inherit;
  color: var(--text);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.32rem 0.72rem;
  cursor: pointer;
}

.mx-actions-top button,
.mx-curriculum button.is-on,
.mx-choices button.is-on,
.mx-switch.is-on {
  border-color: var(--accent, #d7c4a3);
  color: var(--accent, #d7c4a3);
}

.mx-choices {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.mx-gauge[hidden] {
  display: none !important;
}

#mx-cloud {
  display: block;
  width: 100%;
  height: min(62vh, 520px);
  min-height: 260px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #12110e;
  touch-action: none;
  cursor: grab;
}

#mx-cloud.is-sculpt {
  cursor: crosshair;
}

#mx-cloud.is-orbiting {
  cursor: grabbing;
}

.mx-orbit {
  margin-top: 0.35rem;
}

.mx-formula {
  margin-top: 0.55rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  font-family: ui-monospace, Consolas, monospace;
  font-size: 0.78rem;
  line-height: 1.45;
}

.mx-formula p {
  margin: 0;
}

.mx-formula .is-off {
  opacity: 0.35;
}

.mx-side {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.mx-label {
  margin: 0.35rem 0 0;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 600;
}

.mx-statement {
  min-height: 2.6rem;
}

.mx-gauge {
  display: grid;
  grid-template-columns: 7.2rem minmax(0, 1fr) 2.6rem;
  align-items: center;
  gap: 0.4rem;
  margin: 0.18rem 0;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.mx-gauge input {
  width: 100%;
  min-width: 0;
  accent-color: var(--accent, #d7c4a3);
}

.mx-gauge-val {
  text-align: right;
  color: var(--text);
}

.mx-route {
  margin: 0;
  padding-left: 1.15rem;
  font-size: 0.84rem;
  line-height: 1.4;
}

.mx-route li {
  margin: 0.18rem 0;
  color: var(--text-muted);
}

.mx-route li.is-done {
  color: var(--text);
}

.mx-route li.is-done::marker {
  color: var(--accent, #d7c4a3);
}

.mx-answer {
  margin: 0;
  padding: 0.7rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  font-size: 0.88rem;
  line-height: 1.4;
}

@media (max-width: 800px) {
  .mx-shell {
    padding: 1rem 0.75rem 2rem;
  }

  .mx-lab {
    grid-template-columns: minmax(0, 1fr);
  }

  .mx-stage {
    order: -1;
  }

  #mx-cloud {
    height: 280px;
    min-height: 220px;
  }

  .mx-gauge {
    grid-template-columns: 6.2rem minmax(0, 1fr) 2.4rem;
  }
}