metabuilder/scss/Stepper.module.scss

// Stepper Component - Material Design 3
// Uses M3 surface, primary, and typography tokens

.stepper {
  display: flex;
  padding: 24px;

  &.horizontal {
    flex-direction: row;
    align-items: flex-start;
  }

  &.vertical {
    flex-direction: column;
  }

  &.alternativeLabel {
    .step {
      flex-direction: column;
      align-items: center;
      text-align: center;
    }

    .stepLabels {
      margin-left: 0;
      margin-top: 8px;
    }
  }
}

.step {
  display: flex;
  align-items: center;
  flex-shrink: 0;

  &.clickable {
    cursor: pointer;

    &:hover .stepIcon {
      background-color: color-mix(in srgb, var(--mat-sys-on-primary) 8%, var(--mat-sys-primary));
    }
  }

  &.error {
    .stepLabel {
      color: var(--mat-sys-error);
    }
  }
}

.stepContent {
  display: flex;
  align-items: center;
}

.stepIcon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--mat-sys-corner-full);
  background-color: var(--mat-sys-surface-container-highest);
  color: var(--mat-sys-on-surface-variant);
  font-family: var(--mat-sys-label-large-font);
  font-size: var(--mat-sys-label-large-size);
  font-weight: var(--mat-sys-label-large-weight);
  flex-shrink: 0;
  transition: background-color var(--mat-sys-motion-duration-short4) var(--mat-sys-motion-easing-standard),
              color var(--mat-sys-motion-duration-short4) var(--mat-sys-motion-easing-standard);

  &.active {
    background-color: var(--mat-sys-primary);
    color: var(--mat-sys-on-primary);
  }

  &.completed {
    background-color: var(--mat-sys-primary);
    color: var(--mat-sys-on-primary);
  }

  &.error {
    background-color: var(--mat-sys-error);
    color: var(--mat-sys-on-error);
  }
}

.stepLabels {
  margin-left: 12px;
  display: flex;
  flex-direction: column;
}

.stepLabel {
  font-family: var(--mat-sys-title-small-font);
  font-size: var(--mat-sys-title-small-size);
  font-weight: var(--mat-sys-title-small-weight);
  line-height: var(--mat-sys-title-small-line-height);
  color: var(--mat-sys-on-surface);

  .step.completed & {
    color: var(--mat-sys-on-surface);
  }

  .step:not(.active):not(.completed) & {
    color: var(--mat-sys-on-surface-variant);
  }
}

.optional {
  display: block;
  font-family: var(--mat-sys-body-small-font);
  font-size: var(--mat-sys-body-small-size);
  font-weight: var(--mat-sys-body-small-weight);
  color: var(--mat-sys-on-surface-variant);
  margin-top: 2px;
}

.stepDescription {
  font-family: var(--mat-sys-body-small-font);
  font-size: var(--mat-sys-body-small-size);
  color: var(--mat-sys-on-surface-variant);
  margin-top: 4px;
}

.connector {
  display: flex;
  align-items: center;
  flex: 1;

  &.horizontal {
    min-width: 24px;
    padding: 0 8px;

    .connectorLine {
      height: 1px;
      width: 100%;
    }
  }

  &.vertical {
    min-height: 24px;
    padding: 8px 0;
    margin-left: 18px;

    .connectorLine {
      width: 1px;
      height: 100%;
      min-height: 24px;
    }
  }
}

.connectorLine {
  background-color: var(--mat-sys-outline-variant);
  transition: background-color var(--mat-sys-motion-duration-short4) var(--mat-sys-motion-easing-standard);

  .connector.completed & {
    background-color: var(--mat-sys-primary);
  }
}