.lib-process-section {
  width: 100%;
  padding-block: var(--lib-space-section-y);
  background: var(--lib-surface-elevated);
}

.lib-process-section__container {
  box-sizing: border-box;
  width: var(--lib-container-wide);
  margin-inline: auto;
  padding-inline: var(--lib-space-container-x);
}

.lib-process-section__header {
  margin-bottom: var(--lib-space-8);
}

.lib-process-section__steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--lib-space-5);
  list-style: none;
  margin: 0;
  padding: 0;
}

.lib-process-step__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  margin-bottom: var(--lib-space-4);
  border-radius: var(--lib-radius-pill);
  color: var(--lib-action-primary-text);
  background: var(--lib-action-primary-bg);
  font-weight: 900;
}

.lib-process-step__title {
  margin: 0;
  font-family: var(--lib-font-heading);
  font-size: var(--lib-font-size-subheading);
}

.lib-process-step__text {
  margin: var(--lib-space-3) 0 0;
  color: var(--lib-text-secondary);
}

@media (max-width: 960px) {
  .lib-process-section__steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .lib-process-section__steps {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 540px) {
  .lib-process-section {
    padding-block: var(--lib-space-section-y);
  }

  .lib-process-section__container {
    width: var(--lib-container-wide);
  }

  .lib-process-section__header {
    margin-bottom: var(--lib-space-6);
  }
}

/* Cards variant: composition only. Every value is a token with a neutral
   default drawn from the core palette, so a brand adopts its own look
   without CSS of its own. */
.lib-process-section--cards .lib-process-section__steps {
  align-items: stretch;
}

.lib-process-section--cards .lib-process-step {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-width: 0;
  padding: var(--lib-process-card-pad, var(--lib-space-5));
  border: 1px solid var(--lib-process-card-border, var(--lib-color-border-card));
  border-radius: var(--lib-process-card-radius, var(--lib-radius-lg, 1rem));
  background: var(--lib-process-card-bg, var(--lib-surface-card));
  box-shadow: var(--lib-process-card-shadow, none);
}

.lib-process-section--cards .lib-process-step__number {
  flex-shrink: 0;
}

.lib-process-section--cards .lib-process-step__title {
  color: var(--lib-text-primary);
  overflow-wrap: break-word;
}

@media (max-width: 620px) {
  .lib-process-section--cards .lib-process-section__steps {
    gap: var(--lib-space-3);
  }

  .lib-process-section--cards .lib-process-step {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: start;
    column-gap: var(--lib-space-3);
    padding: var(--lib-process-card-pad-compact, var(--lib-space-4));
  }

  .lib-process-section--cards .lib-process-step__number {
    grid-row: 1 / span 2;
    margin: 0;
  }

  .lib-process-section--cards .lib-process-step__title,
  .lib-process-section--cards .lib-process-step__text {
    grid-column: 2;
  }

  .lib-process-section--cards .lib-process-step__title {
    align-self: center;
  }

  .lib-process-section--cards .lib-process-step__text {
    margin-top: var(--lib-space-2);
  }
}

/* Timeline variant: composition only. One column of steps joined by a vertical
   line; the number is the node. Line and node colors are tokens with neutral
   defaults, so a brand adopts its own through its token file. */
.lib-process-section--timeline .lib-process-section__steps {
  grid-template-columns: minmax(0, 1fr);
  gap: var(--lib-space-0);
  max-width: var(--lib-process-timeline-width, 48rem);
  margin-inline: auto;
}

.lib-process-section--timeline .lib-process-step {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: var(--lib-space-4);
  align-items: start;
  padding-bottom: var(--lib-space-6);
}

.lib-process-section--timeline .lib-process-step:last-child {
  padding-bottom: 0;
}

.lib-process-section--timeline .lib-process-step::before {
  content: "";
  position: absolute;
  inset-block: 2.5rem 0;
  inset-inline-start: calc(1.25rem - 1px);
  width: 2px;
  background: var(--lib-process-timeline-line, var(--lib-color-border-card));
}

.lib-process-section--timeline .lib-process-step:last-child::before {
  display: none;
}

.lib-process-section--timeline .lib-process-step__number {
  grid-row: 1 / span 2;
  margin: 0;
}

.lib-process-section--timeline .lib-process-step__title,
.lib-process-section--timeline .lib-process-step__text {
  grid-column: 2;
  min-width: 0;
  overflow-wrap: break-word;
}

.lib-process-section--timeline .lib-process-step__title {
  align-self: center;
  min-height: 2.5rem;
  display: flex;
  align-items: center;
  color: var(--lib-text-primary);
}

.lib-process-section--timeline .lib-process-step__text {
  margin-top: var(--lib-space-0);
}

/* With a left heading the timeline starts at the container edge, under the heading. */
.lib-process-section--timeline.lib-process-section--align-left .lib-process-section__steps {
  margin-inline: 0;
}

/* Timeline on a wide screen: three or four steps run along one horizontal line,
   so the section never leaves half of the width empty. Five or more stay vertical. */
@media (min-width: 64rem) {
  .lib-process-section--timeline.lib-process-section--count-3 .lib-process-section__steps,
  .lib-process-section--timeline.lib-process-section--count-4 .lib-process-section__steps {
    grid-template-columns: repeat(var(--lib-process-timeline-cols), minmax(0, 1fr));
    gap: var(--lib-space-6);
    max-width: none;
    margin-inline: 0;
  }

  .lib-process-section--timeline.lib-process-section--count-3 { --lib-process-timeline-cols: 3; }
  .lib-process-section--timeline.lib-process-section--count-4 { --lib-process-timeline-cols: 4; }

  .lib-process-section--timeline.lib-process-section--count-3 .lib-process-step,
  .lib-process-section--timeline.lib-process-section--count-4 .lib-process-step {
    display: block;
    padding-bottom: 0;
  }

  .lib-process-section--timeline.lib-process-section--count-3 .lib-process-step::before,
  .lib-process-section--timeline.lib-process-section--count-4 .lib-process-step::before {
    inset-block: calc(1.25rem - 1px) auto;
    inset-inline: 3rem calc(-1 * var(--lib-space-6) + 0.5rem);
    width: auto;
    height: 2px;
  }

  .lib-process-section--timeline.lib-process-section--count-3 .lib-process-step__number,
  .lib-process-section--timeline.lib-process-section--count-4 .lib-process-step__number {
    margin-bottom: var(--lib-space-4);
  }

  .lib-process-section--timeline.lib-process-section--count-3 .lib-process-step__title,
  .lib-process-section--timeline.lib-process-section--count-4 .lib-process-step__title {
    min-height: 0;
  }
}