/* stepper.css: Stepper (component 30). Owner: group E (P2.T8). Tokens only, logical properties only. 02 "30. Stepper".
   Vertical in the builder at 1440 and up (a 200 px column), horizontal above the form below that. The layout is data-layout, set from the
   viewport by the module (or forced with the orientation option). */
[data-component="stepper"] { min-inline-size: 0; color: var(--text); }
[data-component="stepper"] .stepper__list { list-style: none; margin: 0; padding: 0; display: flex; }
[data-component="stepper"] .stepper__step { position: relative; flex: 1 1 0; min-inline-size: 0; max-inline-size: none; }
[data-component="stepper"] .stepper__control {
  display: grid;
  inline-size: 100%;
  padding: 0;
  border: 0;
  border-radius: var(--radius-control);
  background: transparent;
  color: inherit;
  font: var(--type-button);
  text-align: start;
  cursor: pointer;
}
[data-component="stepper"] .stepper__control:hover { background: var(--surface-hover); }
[data-component="stepper"] .stepper__control:active { background: var(--border); }
[data-component="stepper"] .stepper__control[aria-disabled="true"] { cursor: not-allowed; }
[data-component="stepper"] .stepper__control[aria-disabled="true"]:hover { background: transparent; }
[data-component="stepper"] .stepper__control[aria-disabled="true"] .stepper__name { color: var(--text-secondary); }

[data-component="stepper"] .stepper__marker {
  box-sizing: border-box;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: var(--size-marker);
  block-size: var(--size-marker);
  border: var(--border-width) solid var(--border-control);
  border-radius: var(--radius-round);
  background: var(--surface);
  color: var(--text-secondary);
  font: var(--type-label);
  font-variant-numeric: tabular-nums lining-nums;
}
[data-component="stepper"] .stepper__marker[data-state="complete"] { background: var(--brand); border-color: var(--brand); color: var(--brand-contrast); }
[data-component="stepper"] .stepper__marker[data-state="current"] { border: var(--border-width-thick) solid var(--brand); color: var(--text); }
[data-component="stepper"] .stepper__marker[data-state="error"] { border: var(--border-width-thick) solid var(--critical); color: var(--critical); }
[data-component="stepper"] .stepper__text { display: grid; min-inline-size: 0; }
[data-component="stepper"] .stepper__name { font: var(--type-button); overflow-wrap: anywhere; }
[data-component="stepper"] .stepper__state { color: var(--text-secondary); font: var(--type-caption); }
[data-component="stepper"] .stepper__small { display: none; }

/* The connecting line: solid --border-strong when the step is done, dashed --border otherwise. */
[data-component="stepper"] .stepper__step:not(:last-child)::after { content: ""; position: absolute; pointer-events: none; border-color: var(--border); border-style: dashed; border-width: 0; }
[data-component="stepper"] .stepper__step[data-complete="true"]:not(:last-child)::after { border-color: var(--border-strong); border-style: solid; }

/* Vertical: marker and text side by side, a line down the marker column. */
[data-component="stepper"][data-layout="vertical"] { inline-size: var(--size-stepper); }
[data-component="stepper"][data-layout="vertical"] .stepper__list { flex-direction: column; }
[data-component="stepper"][data-layout="vertical"] .stepper__step { flex: none; min-block-size: var(--space-10); }
[data-component="stepper"][data-layout="vertical"] .stepper__control { grid-template-columns: var(--size-marker) minmax(0, 1fr); column-gap: var(--space-4); align-items: start; min-block-size: var(--space-10); padding-block: var(--space-2); padding-inline: var(--space-2); }
[data-component="stepper"][data-layout="vertical"] .stepper__step:not(:last-child)::after {
  inset-block: calc(var(--space-2) + var(--size-marker)) calc(-1 * var(--space-2));
  inset-inline-start: calc(var(--space-2) + var(--size-marker) / 2);
  border-inline-start-width: var(--border-width-rail);
}

/* Horizontal: a row of markers with names beneath, --size-stepper-h tall; each step is its marker block then a connector that fills the gap. */
[data-component="stepper"][data-layout="horizontal"] .stepper__list { gap: 0; min-block-size: var(--size-stepper-h); }
[data-component="stepper"][data-layout="horizontal"] .stepper__step { display: flex; align-items: flex-start; flex: 1 1 auto; }
[data-component="stepper"][data-layout="horizontal"] .stepper__step:last-child { flex: 0 1 auto; }
[data-component="stepper"][data-layout="horizontal"] .stepper__control { inline-size: auto; min-inline-size: var(--size-marker); max-inline-size: 100%; flex: 0 1 auto; justify-items: center; align-content: start; gap: var(--space-2); min-block-size: var(--size-stepper-h); padding: var(--space-2); text-align: center; }
[data-component="stepper"][data-layout="horizontal"] .stepper__text { justify-items: center; text-align: center; inline-size: 100%; min-inline-size: 0; }
[data-component="stepper"][data-layout="horizontal"] .stepper__name { max-inline-size: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
[data-component="stepper"][data-layout="horizontal"] .stepper__state { display: none; }
[data-component="stepper"][data-layout="horizontal"] .stepper__step:not(:last-child)::after {
  position: static;
  content: "";
  flex: 1 1 var(--space-7);
  align-self: flex-start;
  margin-block-start: calc(var(--space-2) + var(--size-marker) / 2);
  min-inline-size: var(--space-4);
  border-block-start-width: var(--border-width-rail);
}

/* Small: only the current name, as "Step 3 of 5, Template"; the others keep an accessible name but are not drawn. */
@media (width < 768px) {
  [data-component="stepper"][data-layout="horizontal"] .stepper__step:not(:has([aria-current="step"])) .stepper__text {
    position: absolute;
    inline-size: var(--border-width);
    block-size: var(--border-width);
    overflow: hidden;
    clip-path: inset(100%);
  }
  [data-component="stepper"][data-layout="horizontal"] .stepper__step:has([aria-current="step"]) .stepper__name,
  [data-component="stepper"][data-layout="horizontal"] .stepper__step:has([aria-current="step"]) .stepper__state { display: none; }
  [data-component="stepper"][data-layout="horizontal"] .stepper__small { display: block; font: var(--type-caption); white-space: normal; }
}

/* Kitchen sink sample frame (the demo only). */
.stepper-demo { display: grid; gap: var(--space-4); max-inline-size: var(--size-form-max); min-inline-size: 0; }
.stepper-demo__actions { display: flex; flex-wrap: wrap; gap: var(--space-3); }