.regression-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 960px) {
  .regression-grid {
    grid-template-columns: 1fr;
  }
}

.regression-form fieldset {
  border: 0;
  margin: 0;
  padding: 0;
}

.regression-field {
  margin-bottom: 1rem;
}

.regression-inline {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 160px;
  flex: 1 1 180px;
}

.regression-switches {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.regression-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

#regression-data {
  width: 100%;
  min-height: 220px;
  padding: 0.75rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

#regression-data::placeholder {
  color: #73808c;
}

.regression-error {
  color: #b00020;
  margin-top: 0.75rem;
  min-height: 1.25rem;
}

.regression-status {
  color: #1c475f;
  margin-top: 0.5rem;
  min-height: 1.25rem;
}

.regression-summary table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.75rem;
}

.regression-summary th,
.regression-summary td {
  border: 1px solid #d9dde2;
  padding: 0.45rem 0.6rem;
  text-align: left;
  font-variant-numeric: tabular-nums;
}

.regression-summary th {
  background: #f5f7fa;
}

.regression-placeholder {
  margin: 0.35rem 0 0;
  color: #5a6773;
}

.regression-steps {
  margin-top: 1.25rem;
}

.regression-steps ol {
  margin: 0.5rem 0 0;
  padding-left: 1.25rem;
  display: grid;
  gap: 0.4rem;
}

.regression-canvas-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.regression-canvas-grid figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.regression-canvas-grid figcaption {
  font-size: 0.95rem;
}

canvas {
  width: 100%;
  height: auto;
  border: 1px solid #e1e5ea;
  border-radius: 8px;
  background: #fafbfc;
}

.regression-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: #4b5866;
}