@layer cinder.tokens, cinder.foundation, cinder.components, cinder.utilities;
@layer cinder.components {
  /* ========================================
 * FORM SECTION
 * ======================================== */

  .cinder-form-section {
    container-type: inline-size;
    container-name: cinder-form-section;
    display: block;
    border: none;
    padding: 0;
    margin: 0;
  }

  /* ----------------------------------------
 * Heading / Legend
 * ---------------------------------------- */

  .cinder-form-section__heading,
  .cinder-form-section__legend {
    display: block;
    font-size: var(--cinder-text-sm);
    font-weight: var(--cinder-font-semibold);
    line-height: var(--cinder-leading-snug);
    color: var(--cinder-text-default);
    margin: 0 0 var(--cinder-space-1-5);
    padding: 0;
  }

  /* ----------------------------------------
 * Description
 * ---------------------------------------- */

  .cinder-form-section__description {
    font-size: var(--cinder-text-xs);
    line-height: var(--cinder-leading-normal);
    color: var(--cinder-text-muted);
    margin: 0 0 var(--cinder-space-3);
  }

  /* ----------------------------------------
 * Responsive grid — driven by container queries
 * ---------------------------------------- */

  .cinder-form-section__grid {
    display: grid;
    gap: var(--cinder-form-section-gap, 1rem);
    grid-template-columns: 1fr; /* default: single column */
  }

  @container cinder-form-section (min-width: 40rem) {
    .cinder-form-section[data-columns='2'] .cinder-form-section__grid,
    .cinder-form-section[data-columns='3'] .cinder-form-section__grid,
    .cinder-form-section[data-columns='4'] .cinder-form-section__grid {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }
  }

  @container cinder-form-section (min-width: 60rem) {
    .cinder-form-section[data-columns='3'] .cinder-form-section__grid,
    .cinder-form-section[data-columns='4'] .cinder-form-section__grid {
      grid-template-columns: repeat(3, minmax(0, 1fr));
    }
  }

  @container cinder-form-section (min-width: 80rem) {
    .cinder-form-section[data-columns='4'] .cinder-form-section__grid {
      grid-template-columns: repeat(4, minmax(0, 1fr));
    }
  }
}