.feature-test-lab {
  --ft-surface: var(--surface, #fff);
  --ft-muted: var(--text-muted, #5d6470);
  --ft-text: var(--text, #18202b);
  --ft-border: var(--border, #d7dce2);
  --ft-accent: var(--accent, #2563eb);
  color: var(--ft-text); max-width: 1120px; margin-inline: auto;
}
.feature-test-form, .feature-test-results, .feature-test-history { background: var(--ft-surface); border: 1px solid var(--ft-border); border-radius: var(--radius, 12px); padding: 1rem; margin-block: 1rem; }
.feature-test-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .6rem 1rem; align-items: end; }
.feature-test-form label { font-weight: 650; }
.feature-test-form select, .feature-test-form textarea { box-sizing: border-box; width: 100%; color: inherit; background: var(--ft-surface); border: 1px solid var(--ft-border); border-radius: 8px; padding: .7rem; font: inherit; }
.feature-test-prompt { grid-column: 1 / -1; }
.feature-test-scenario-prompt + .feature-test-scenario-prompt { margin-top: .9rem; }
.feature-test-prompt textarea { display: block; margin-top: .35rem; resize: vertical; }
.feature-test-help, .feature-test-empty, .feature-test-live { color: var(--ft-muted); }
.feature-test-form button { min-height: 44px; border: 1px solid var(--ft-border); border-radius: 8px; padding: .65rem 1rem; font: inherit; font-weight: 650; cursor: pointer; }
.feature-test-form button:disabled { cursor: not-allowed; opacity: .6; }
.feature-test-primary { color: #fff; background: var(--ft-accent); border-color: var(--ft-accent) !important; }
.feature-test-form :focus-visible, .feature-test-lab button:focus-visible { outline: 3px solid color-mix(in srgb, var(--ft-accent) 60%, transparent); outline-offset: 2px; }
.feature-test-stages { display: grid; gap: .6rem; padding-left: 1.5rem; }
.feature-test-stages li { border-left: 4px solid currentColor; padding: .65rem .8rem; }
.feature-test-stages li > span { float: right; font-weight: 700; }
.feature-test-payload { margin-top: .8rem; border: 1px solid var(--ft-border); border-radius: 8px; padding: .7rem; background: var(--ft-surface); }
.feature-test-payload summary { cursor: pointer; font-weight: 700; }
.feature-test-json { max-height: 24rem; overflow: auto; white-space: pre-wrap; overflow-wrap: anywhere; padding: .75rem; border-radius: 6px; background: color-mix(in srgb, var(--ft-surface) 85%, var(--ft-text)); font-size: .85rem; }
.feature-test-skip { font-weight: 650; color: var(--ft-muted); }
.feature-test-history-payload { background: color-mix(in srgb, var(--ft-surface) 96%, var(--ft-text)); }
.feature-test-delete-payload { margin-top: .6rem; min-height: 44px; }
.is-pass { color: var(--success, #18723c); font-weight: 700; }
.is-fail, .feature-test-error { color: var(--danger, #b42318); font-weight: 700; }
.feature-test-table-scroll { overflow-x: auto; }
.feature-test-history table { width: 100%; border-collapse: collapse; }
.feature-test-history th, .feature-test-history td { border-bottom: 1px solid var(--ft-border); padding: .7rem; text-align: left; overflow-wrap: anywhere; }
.feature-test-history caption { color: var(--ft-muted); text-align: left; padding-block: 0 1rem; }
@media (max-width: 720px) {
  .feature-test-form { grid-template-columns: 1fr; }
  .feature-test-prompt { grid-column: auto; }
  .feature-test-form button { width: 100%; }
}
@media (prefers-color-scheme: dark) {
  .feature-test-lab { --ft-surface: var(--surface, #171a21); --ft-text: var(--text, #f1f4f8); --ft-muted: var(--text-muted, #aab2bf); --ft-border: var(--border, #3b4350); --ft-accent: var(--accent, #7aa2ff); }
  .feature-test-primary { color: #081224; }
  .feature-test-lab .is-pass { color: #86efac; }
}
@media (prefers-reduced-motion: reduce) { .feature-test-lab * { scroll-behavior: auto !important; transition: none !important; } }