.sim-intro {
  padding: 1.2rem;
  margin-bottom: 1rem;
}

.sim-intro p {
  margin-top: 0.65rem;
  color: var(--muted);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.mode-tabs {
  display: inline-flex;
  gap: 0.4rem;
  margin-bottom: 0.9rem;
}

.tab-btn {
  border: 1px solid rgba(12, 29, 44, 0.16);
  border-radius: 999px;
  background: var(--surface);
  padding: 0.4rem 0.9rem;
  cursor: pointer;
}

.tab-btn.is-active {
  border-color: var(--accent);
  background: var(--surface-strong);
  color: var(--accent-strong);
  font-weight: 600;
}

.mode-panel {
  display: grid;
  gap: 1rem;
}

.mode-panel[hidden] {
  display: none;
}

.sim-grid {
  display: grid;
  grid-template-columns: minmax(320px, 460px) 1fr;
  gap: 1rem;
}

.control-panel {
  padding: 1rem;
  display: grid;
  gap: 0.95rem;
}

.control-group {
  display: grid;
  gap: 0.35rem;
}

.control-group label {
  font-weight: 600;
}

.range-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.range-row output {
  min-width: 3ch;
  text-align: right;
  font-weight: 700;
}

.parameter-list {
  display: grid;
  gap: 0.6rem;
}

.parameter-item {
  background: var(--surface-soft);
  border-radius: var(--radius-sm);
  padding: 0.7rem;
  display: grid;
  gap: 0.45rem;
}

.parameter-item h4 {
  font-size: 0.95rem;
}

.actions-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.viz-panel {
  padding: 1rem;
  display: grid;
  gap: 1rem;
}

.quality-scale {
  position: relative;
  height: 118px;
  background: linear-gradient(90deg, rgba(169, 53, 42, 0.2), rgba(226, 167, 82, 0.18), rgba(47, 127, 69, 0.2));
  border-radius: var(--radius-sm);
  border: 1px solid rgba(12, 29, 44, 0.12);
  overflow: hidden;
}

.scale-track {
  position: absolute;
  left: 1rem;
  right: 1rem;
  top: 50%;
  height: 5px;
  transform: translateY(-50%);
  border-radius: 999px;
  background: rgba(18, 34, 48, 0.2);
}

.scale-labels {
  position: absolute;
  left: 1rem;
  right: 1rem;
  bottom: 0.5rem;
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--muted);
}

.scale-distance {
  position: absolute;
  top: calc(50% - 4px);
  height: 8px;
  border-radius: 999px;
  background: rgba(11, 128, 120, 0.35);
}

.scale-marker {
  position: absolute;
  top: 20%;
  transform: translateX(-50%);
  display: grid;
  gap: 0.25rem;
  justify-items: center;
}

.scale-marker span {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-strong);
  border: 2px solid #fff;
}

.scale-marker small {
  font-size: 0.74rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid rgba(12, 29, 44, 0.12);
  border-radius: 999px;
  padding: 0.08rem 0.35rem;
}

.scale-marker.perceived span {
  background: #2d5f98;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.5rem;
}

.metric {
  background: var(--surface-soft);
  border-radius: var(--radius-sm);
  padding: 0.6rem;
}

.metric strong {
  display: block;
  font-size: 1.15rem;
}

.metric small {
  color: var(--muted);
}

.insight {
  border-left: 4px solid var(--accent);
  background: rgba(11, 128, 120, 0.1);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.8rem;
}

.history-wrap {
  overflow-x: auto;
}

.history-table {
  width: 100%;
  border-collapse: collapse;
}

.history-table th,
.history-table td {
  border-bottom: 1px solid rgba(12, 29, 44, 0.12);
  text-align: left;
  padding: 0.45rem 0.35rem;
}

.history-table th {
  color: var(--muted);
  font-size: 0.85rem;
}

.guided-panel {
  padding: 1rem;
  display: grid;
  gap: 1rem;
}

.guided-case {
  background: var(--surface-soft);
  border-radius: var(--radius-sm);
  padding: 0.85rem;
}

.guided-options {
  display: grid;
  gap: 0.55rem;
}

.option-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.5rem;
  padding: 0.6rem;
  border: 1px solid rgba(12, 29, 44, 0.15);
  border-radius: var(--radius-sm);
  background: #fff;
}

.guided-feedback,
.guided-summary {
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid rgba(12, 29, 44, 0.12);
}

@media (max-width: 980px) {
  .sim-grid,
  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .actions-row {
    flex-direction: column;
  }

  .actions-row button {
    width: 100%;
  }
}