@use '../../theme/styles' as theme;

.wr-stepper {
  --wr-stepper-indicator-size: 1.75rem;
  --wr-stepper-connector: var(--wr-color-light);
  --wr-stepper-muted: var(--wr-color-medium);

  display: flex;
  flex-direction: column;
  // Claim the full row even when nested in a flex-row demo wrapper.
  flex: 1 1 100%;
  width: 100%;
  min-width: 0;
  gap: 1rem;
  font-family: var(--wr-font-family-base);

  // Opt-in (`responsive`): query the box's own width so a horizontal stepper
  // can drop to vertical when its column is too narrow. The host is already
  // full-width, so containment is safe here.
  &--responsive {
    container: wr-stepper / inline-size;
  }

  &__headers {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 0;
  }

  &--vertical &__headers {
    flex-direction: column;
  }

  &__header {
    display: flex;
    align-items: center;
    flex: 1 1 auto;
    gap: 0.75rem;
    min-width: 0;

    &--disabled {
      opacity: 0.5;
    }
  }

  &--vertical &__header {
    align-items: stretch;
    flex: 0 0 auto;
  }

  &__header-button {
    appearance: none;
    background: transparent;
    border: 0;
    padding: 0.25rem 0;
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    color: var(--wr-color-dark);
    cursor: pointer;
    text-align: left;
    flex: 0 0 auto;

    &:disabled {
      cursor: not-allowed;
    }

    &:hover:not(:disabled) .wr-stepper__indicator {
      border-color: var(--wr-color-primary);
      color: var(--wr-color-primary);
    }
  }

  &__indicator {
    width: var(--wr-stepper-indicator-size);
    height: var(--wr-stepper-indicator-size);
    border-radius: 50%;
    border: 1.5px solid var(--wr-color-light);
    background: var(--wr-color-white);
    color: var(--wr-stepper-muted);
    font-size: var(--wr-text-sm);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    transition:
      background var(--wr-transition-base),
      border-color var(--wr-transition-base),
      color var(--wr-transition-base);
  }

  &__header--active &__indicator {
    border-color: var(--wr-color-primary);
    color: var(--wr-color-primary);
    background: var(--wr-color-primary-soft);
  }

  &__header--completed &__indicator {
    background: var(--wr-color-primary);
    border-color: var(--wr-color-primary);
    color: var(--wr-color-white);
  }

  &__label {
    display: inline-flex;
    flex-direction: column;
    gap: 0.0625rem;
    font-size: var(--wr-text-sm);
    font-weight: 500;
    line-height: 1.25rem;
  }

  &__header--active &__label {
    color: var(--wr-color-primary);
  }

  &__optional,
  &__description {
    font-size: var(--wr-text-xs);
    font-weight: 500;
    color: var(--wr-stepper-muted);
    text-transform: none;
    letter-spacing: 0.01em;
  }

  &__optional {
    text-transform: uppercase;
    letter-spacing: 0.06em;
  }

  &__connector {
    flex: 1 1 auto;
    height: 1.5px;
    background: var(--wr-stepper-connector);
    min-width: 1rem;
    margin: 0 0.5rem;
  }

  &--vertical &__connector {
    width: 1.5px;
    min-height: 1.25rem;
    height: auto;
    margin: 0.25rem 0 0.25rem calc(var(--wr-stepper-indicator-size) / 2);
    align-self: stretch;
    flex: 0 0 auto;
  }

  &__header--completed + &__header &__connector,
  &__header--completed &__connector {
    background: var(--wr-color-primary);
  }

  &__body {
    min-height: 0;
  }
}

// Responsive horizontal steppers fall back to the vertical layout when their
// own box is too narrow for the row — mirrors the `--vertical` rules above,
// scoped to responsive steppers that aren't already vertical.
@container wr-stepper (max-width: 32rem) {
  .wr-stepper--responsive:not(.wr-stepper--vertical) .wr-stepper__headers {
    flex-direction: column;
  }

  .wr-stepper--responsive:not(.wr-stepper--vertical) .wr-stepper__header {
    align-items: stretch;
    flex: 0 0 auto;
  }

  .wr-stepper--responsive:not(.wr-stepper--vertical) .wr-stepper__connector {
    width: 1.5px;
    min-height: 1.25rem;
    height: auto;
    margin: 0.25rem 0 0.25rem calc(var(--wr-stepper-indicator-size) / 2);
    align-self: stretch;
    flex: 0 0 auto;
  }
}

// `<wr-step>` itself — visibility is driven by an `--active` class
// the stepper toggles via host binding.
.wr-step {
  display: none;
}

.wr-step--active {
  display: block;
}