.program-example {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.program-example__title {
  margin: 0;
  font-size: 1.15rem;
}

.program-example__intro {
  margin: 0;
}

.program-example__lang,
.program-example__toolbar,
.program-example__steps,
.program-example__actions,
.program-example__output-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.program-example__stage {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(16rem, 0.85fr);
  gap: 0.75rem;
  align-items: start;
}

.program-example__io {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-width: 0;
}

.program-example__editor {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: stretch;
  overflow: hidden;
  padding: 0;
}

.program-example__gutter,
.program-example__code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.875rem;
  line-height: 1.5rem;
}

.program-example__gutter {
  margin: 0;
  padding: 0.5rem 0.35rem;
  text-align: right;
  user-select: none;
  min-width: 2rem;
}

.program-example__gutter span {
  display: block;
  height: 1.5rem;
  padding: 0 0.25rem;
}

.program-example__gutter span.is-active {
  font-weight: 700;
  box-shadow: inset 2px 0 0 var(--ui-btn-primary-border);
}

.program-example__code {
  width: 100%;
  min-height: 12rem;
  margin: 0;
  padding: 0.5rem 0.6rem;
  border: 0;
  resize: vertical;
  background: transparent;
  color: inherit;
}

.program-example__stdin,
.program-example__output {
  min-height: 6.5rem;
  white-space: pre-wrap;
  margin: 0;
}

.program-example__vars {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.5rem;
}

.program-example__var {
  display: inline-flex;
  gap: 0.35rem;
  align-items: baseline;
  padding: 0.15rem 0.45rem;
  border: 1px solid var(--ui-btn-primary-border);
  border-radius: 0.35rem;
}

.program-example__note,
.program-example__hint,
.program-example__status,
.program-example__step-label {
  margin: 0;
}

.program-example__toolbar {
  justify-content: space-between;
  padding-top: 0.25rem;
}

.program-example__steps {
  padding: 0.25rem;
  border: 1px solid var(--ui-btn-primary-border);
  border-radius: 0.5rem;
}

@media (max-width: 800px) {
  .program-example__stage {
    grid-template-columns: 1fr;
  }
}