/* fs-edit 实验页的少量专属样式；骨架复用 study-lab-shell。 */

.fe-pipeline {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: var(--space-2xs);
}

.fe-stage {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 128px;
  max-width: 220px;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--line);
}

.fe-stage strong { font-size: 0.86rem; }
.fe-stage small { color: var(--muted); font-size: 0.78rem; line-height: 1.35; }

.fe-stage.is-ok { border-color: var(--allow); background: color-mix(in srgb, var(--allow) 10%, transparent); }
.fe-stage.is-fail { border-color: var(--deny); background: color-mix(in srgb, var(--deny) 10%, transparent); }
.fe-stage.is-fail strong { color: var(--deny-ink); }

.fe-arrow { align-self: center; color: var(--muted); }

.fe-diff {
  display: block;
  margin: 14px 0 0;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.5;
}

.fe-diff span { display: block; white-space: pre; }
.fe-diff .is-add { color: var(--allow-ink, var(--allow)); background: color-mix(in srgb, var(--allow) 14%, transparent); }
.fe-diff .is-del { color: var(--deny-ink); background: color-mix(in srgb, var(--deny) 12%, transparent); text-decoration: line-through; text-decoration-thickness: 1px; }
.fe-diff .is-ctx { color: var(--muted); }

.fe-error-box {
  margin: 14px 0 0;
  padding: 10px 12px;
  border: 1px solid var(--deny);
  border-left-width: 4px;
  border-radius: 0 8px 8px 0;
  background: color-mix(in srgb, var(--deny) 8%, transparent);
  color: var(--deny-ink, var(--deny));
  font-family: var(--mono);
  font-size: 0.82rem;
  white-space: pre-wrap;
  overflow-x: auto;
}

.fe-empty-diff { color: var(--muted); margin: 10px 0 0; }

@media (forced-colors: active) {
  .fe-stage, .fe-diff, .fe-error-box { border: 1px solid CanvasText; }
}