/* common/css/integration.css — styles for integration calculator */
.integration-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.integration-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.integration-fieldset {
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 8px;
  padding: 8px 10px;
  min-width: 0;
}

.integration-fieldset legend {
  font-size: 0.9rem;
  font-weight: 600;
  margin-left: 4px;
  color: var(--text-muted, #444);
}

.integration-fieldset label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-right: 12px;
  font-size: 0.9rem;
}

.integration-inputs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  align-items: flex-end;
}

.integration-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.integration-actions .button,
.integration-actions button {
  flex: 0 0 auto;
}

#err {
  color: #b00020;
  font-size: 0.9rem;
}

.integration-result-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.integration-result-grid > div {
  flex: 1 1 320px;
  min-width: 250px;
}

.integration-result-primary {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.integration-result-meta {
  font-size: 0.95rem;
  color: var(--text-muted, #555);
  margin-top: 4px;
}

#steps {
  padding-left: 1.4rem;
  margin: 0;
}

.integration-canvas-card canvas {
  width: 100%;
  max-width: 100%;
  display: block;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 8px;
  background: #fff;
}

#teacher-notes {
  margin: 0;
  padding-left: 1.2rem;
  display: none;
}

#teacher-notes.is-expanded {
  display: block;
}

#teacher-notes li {
  margin-bottom: 6px;
}

@media (max-width: 720px) {
  .integration-controls {
    grid-template-columns: minmax(180px, 1fr);
  }
  .integration-result-grid {
    flex-direction: column;
  }
}