.config-intro {
  display: grid;
  gap: var(--space-1);
  margin-block-start: var(--section-gap);
}
.config-product-name { font-weight: 600; }
.config-product-heading {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.config-product-heading .product-brand {
  flex: none;
  align-self: center;
  margin: 0;
}
.config-layout {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  align-items: start;
  gap: var(--space-6);
  margin-block-start: var(--section-gap);
}
#helmet-config { display: grid; gap: var(--space-3); }
.config-group {
  min-inline-size: 0;
  margin: 0;
  padding: 0;
  border: 0;
}
.config-group:not(:last-child) {
  padding-block-end: var(--space-3);
  border-block-end: 1px solid transparent;
}
.config-group:not(:last-child):has(> [hidden]) {
  border-block-end-color: var(--border-field);
}
.config-group legend {
  padding: 0;
  margin-block-end: var(--space-2);
}
.config-group:has(> [hidden]) > legend {
  margin-block-end: 0;
}
.config-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 9rem), 1fr));
  gap: var(--space-2);
}
.config-option {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3);
  border: 1px solid var(--border-field);
  border-radius: var(--radius-control);
  cursor: pointer;
}
.config-option:hover { background: var(--surface-hover); }
.config-option:has(input:checked) {
  background: var(--surface-tint);
  border-color: var(--blue);
  font-weight: 700;
}
.config-option input { accent-color: var(--blue); margin: 0; }
.config-swatch {
  inline-size: var(--space-5);
  block-size: var(--space-5);
  border: 1px solid var(--border-field);
  border-radius: var(--radius-small);
  background: var(--swatch);
}
.config-field { display: grid; align-content: start; gap: var(--space-2); }
.config-field textarea {
  min-inline-size: 0;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border-field);
  border-radius: var(--radius-control);
  background: var(--surface);
  color: inherit;
  font: inherit;
}
.config-field textarea { resize: vertical; }
.config-preview-photo {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-card);
  margin-block-end: var(--space-4);
}
.config-preview-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  margin-block-end: var(--space-3);
}
.config-preview-header h2 { margin: 0; }
.config-reset {
  padding: var(--space-2);
  border: 0;
  background: transparent;
  color: var(--text-link);
  cursor: pointer;
}
.config-reset:hover { text-decoration: underline; }
.config-part {
  display: grid;
  gap: var(--space-1);
  padding-block-end: var(--space-4);
  border-block-end: 1px solid var(--border-field);
}
.config-part label { font-weight: 700; }
.config-part-number { font-weight: 400; overflow-wrap: anywhere; }
.config-facts {
  gap: var(--space-2);
  margin-block: var(--space-4);
}
.config-facts > div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}
.config-facts dd { text-align: end; overflow-wrap: anywhere; }
.config-facts .is-unselected { color: var(--text-secondary); }
.config-actions { display: grid; gap: var(--space-2); }
.config-actions p:empty { display: none; }
@media (width > 740px) {
  .config-preview {
    position: sticky;
    inset-block-start: calc(var(--header-height) + var(--space-4));
  }
}
.config-group legend { inline-size: 100%; }
.config-group-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.config-edit {
  display: inline-flex;
  gap: var(--space-2);
  max-inline-size: 100%;
  margin-inline-start: auto;
  padding-inline: var(--space-3);
}
.config-edit[hidden] { display: none; }
.config-edit [data-group-value] { font-weight: 700; overflow-wrap: anywhere; }
.config-edit .config-swatch {
  flex: none;
  inline-size: var(--space-4);
  block-size: var(--space-4);
}
.config-done { margin-block-start: var(--space-3); }

@media (max-width: 740px) {
  .config-layout, .config-options--additional {
    grid-template-columns: minmax(0, 1fr);
  }
  .config-group-heading {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }
  .config-edit {
    inline-size: 100%;
    margin-inline-start: 0;
    text-align: start;
  }
  .config-edit [data-group-value] {
    flex: 1;
    min-inline-size: 0;
  }
}