.du-lab { border: 1px solid var(--family-line); border-radius: var(--family-radius); overflow: hidden; background: var(--family-panel); }
.du-lab-heading { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 20px; padding: 20px 28px; font-size: var(--type-caption); color: var(--family-muted); }
.du-runtime { display: inline-flex; align-items: center; gap: 8px; color: var(--family-accent); font-weight: 550; }
.du-runtime i { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.du-runtime img { width: 36px; height: 36px; margin-right: 3px; }
.du-runtime > span { font-size: var(--type-control); color: var(--family-ink); }
.du-runtime small { display: block; color: var(--family-muted); font-size: var(--type-caption); font-weight: 400; }
.du-runtime-badge { padding: 5px 10px; border: 1px solid var(--family-line); border-radius: 999px; font-variant-numeric: tabular-nums; }
.du-lab-privacy { display: flex; align-items: center; gap: 9px; padding: 12px 28px; background: color-mix(in srgb, var(--family-accent-soft) 65%, var(--family-panel)); color: var(--family-accent); font-size: var(--type-caption); border-block: 1px solid color-mix(in srgb, var(--family-accent) 12%, transparent); }
.du-lab-privacy svg { width: 18px; height: 18px; }
.du-lab-grid { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); }
.du-lab-input { padding: 28px; border-right: 1px solid var(--family-line); background: color-mix(in srgb, var(--family-bg) 30%, var(--family-panel)); }
.du-lab-output { min-width: 0; padding: 28px; }
.du-field-heading { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-bottom: 10px; font-size: var(--type-control); }
.du-field-heading label, .du-path-options label { font-weight: 550; }
.du-field-heading > span { color: var(--family-muted); font-size: var(--type-caption); font-variant-numeric: tabular-nums; white-space: nowrap; }
.du-lab input, .du-lab textarea, .du-lab select { display: block; width: 100%; min-width: 0; border: 1px solid var(--family-line); border-radius: 12px; padding: 12px 14px; background: var(--family-bg); font-size: var(--type-code); line-height: 1.65; }
.du-lab input, .du-lab textarea { font-family: ui-monospace, "Cascadia Code", Consolas, monospace; }
.du-lab textarea { resize: vertical; min-height: 158px; max-height: 400px; }
.du-field-hint { color: var(--family-muted); font-size: var(--type-caption); margin-top: 9px; line-height: 1.65; }
.du-lab-input > .du-field-hint + .du-field-heading { margin-top: 24px; }
.du-text-button { padding: 4px 0; border: 0; background: none; color: var(--family-accent); font-size: var(--type-caption); font-weight: 550; text-align: start; }
.du-text-button:hover:not(:disabled) { text-decoration: underline; text-underline-offset: 4px; }
.du-path-options { margin-top: 22px; font-size: var(--type-caption); }
.du-path-options summary, .du-demo-code summary { cursor: pointer; color: var(--family-muted); }
.du-path-options label { display: block; margin: 12px 0 6px; }
.du-path-result { margin-top: 12px; padding: 12px; border: 1px solid var(--family-line); border-radius: 10px; background: var(--family-bg); }
.du-path-result > span { display: block; color: var(--family-muted); margin-bottom: 5px; }
.du-path-result output { font-family: ui-monospace, Consolas, monospace; color: var(--family-accent); overflow-wrap: anywhere; }
.du-encrypt { width: 100%; margin-top: 24px; }
.du-lab-input > .du-field-hint:last-child { text-align: center; }
.du-lab-steps { display: grid; grid-template-columns: minmax(0,1fr) auto minmax(0,1fr) auto minmax(0,1fr); align-items: center; gap: 7px; }
.du-lab-steps div { display: grid; justify-items: start; gap: 6px; min-width: 0; padding: 12px; border: 1px solid var(--family-line); border-radius: 14px; background: color-mix(in srgb, var(--family-bg) 50%, var(--family-panel)); }
.du-lab-steps span, .du-lab-steps small { font-size: var(--type-caption); color: var(--family-muted); }
.du-lab-steps .du-stage-icon { display: grid; place-items: center; width: 30px; height: 30px; margin-bottom: 4px; border-radius: 9px; color: var(--family-accent); background: var(--family-accent-soft); }
.du-stage-icon svg { width: 20px; height: 20px; }
.du-lab[data-has-result] .du-lab-steps div:last-child { border-color: color-mix(in srgb, var(--family-accent) 40%, var(--family-line)); background: var(--family-accent-soft); }
.du-lab[data-phase="working"] .du-stage-icon { opacity: .5; }
.du-lab-steps small { line-height: 1.4; }
.du-lab-steps strong { font-size: var(--type-heading); font-weight: 550; line-height: 1.35; letter-spacing: -.025em; color: var(--family-accent); font-variant-numeric: tabular-nums; }
.du-output-heading { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin: 24px 0 12px; }
.du-output-heading h3 { font-size: var(--type-body); letter-spacing: 0; }
.du-output-heading > button { flex-shrink: 0; white-space: nowrap; }
.du-cipher-panel { margin-top: 22px; padding: 16px 18px; border: 1px solid var(--family-line); border-radius: 16px; background: var(--family-code); }
.du-cipher-panel .du-output-heading { margin: 0 0 12px; }
.du-cipher-panel h3 .du-output-label { display: inline-block; padding-left: 7px; }
.du-cipher-panel .du-cipher-output { padding: 0; border-radius: 0; background: none; min-height: 80px; }
.du-cipher-caption { display: flex; align-items: baseline; gap: 7px; color: var(--family-muted); font-size: var(--type-caption); padding-top: 12px; margin-top: 12px; border-top: 1px solid var(--family-line); }
.du-cipher-caption i { width: 5px; height: 5px; flex-shrink: 0; border-radius: 50%; background: var(--family-accent); }
.du-output-label { color: var(--family-muted); font: 400 var(--type-caption)/1.5 ui-monospace, Consolas, monospace; }
.du-cipher-output, .du-restored { border-radius: 14px; padding: 18px; background: var(--family-code); color: var(--family-muted); font: 400 var(--type-code)/1.8 ui-monospace, "Cascadia Code", Consolas, monospace; white-space: pre-wrap; overflow-wrap: anywhere; word-break: break-word; max-height: 190px; min-height: 104px; overflow: auto; margin: 0; }
.du-lab[data-has-result] .du-cipher-output { color: var(--family-accent); }
.du-recovery { margin-top: 24px; border-top: 1px solid var(--family-line); }
.du-recovery > p { color: var(--family-muted); font-size: var(--type-control); }
.du-test-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 16px; }
.du-test-actions .family-button { font-size: var(--type-control); }
.du-test-actions .family-button { min-height: 40px; padding: 8px 14px; }
.du-test-actions .du-probe { color: var(--family-muted); background: transparent; }
.du-test-actions .family-button:first-child:not(:disabled) { border-color: transparent; color: var(--family-accent); background: var(--family-accent-soft); }
.du-restored { margin-top: 16px; color: var(--family-ink); min-height: auto; }
.du-demo-status { margin-top: 18px; padding: 10px 12px; border: 1px solid var(--family-line); border-left-width: 3px; border-radius: 0 10px 10px 0; background: color-mix(in srgb, var(--family-bg) 40%, transparent); font-size: var(--type-caption); color: var(--family-muted); }
.du-demo-status[data-state="success"] { border-color: var(--family-accent); color: var(--family-accent); }
.du-demo-status[data-state="error"] { border-color: var(--family-danger); color: var(--family-danger); }
.du-demo-code { padding: 20px 28px; border-top: 1px solid var(--family-line); }
.du-demo-code summary { font-size: var(--type-control); }
.du-demo-code summary span { display: inline-block; margin-left: 12px; font-size: var(--type-caption); }
.du-demo-code pre { background: var(--family-code); border: 1px solid var(--family-line); border-radius: 14px; padding: 18px; margin: 18px 0 0; overflow: auto; font-size: var(--type-code); }
@media (max-width: 850px) {
  .du-lab-grid { grid-template-columns: 1fr; }
  .du-lab-input { border-right: 0; border-bottom: 1px solid var(--family-line); }
  .du-lab textarea { min-height: 142px; }
}
@media (max-width: 480px) {
  .du-lab-heading, .du-lab-privacy, .du-lab-input, .du-lab-output, .du-demo-code { padding: 20px; }
  .du-lab-heading { gap: 6px; }
  .du-lab-privacy { padding-block: 14px; }
  .du-lab-steps { grid-template-columns: 1fr; gap: 7px; }
  .du-lab-steps div { grid-template-columns: 30px minmax(0, 1fr) auto; gap: 10px; align-items: center; padding: 10px 12px; }
  .du-lab-steps .du-stage-icon { margin-bottom: 0; }
  .du-lab-steps .du-step-arrow { display: none; }
  .du-lab-steps small { display: none; }
  .du-lab-steps strong { font-size: var(--type-body); }
  .du-lab-steps span { overflow-wrap: anywhere; }
  .du-output-heading { align-items: baseline; }
  .du-cipher-panel { padding: 14px; }
  .du-cipher-panel .du-output-heading { align-items: start; }
  .du-cipher-panel h3 .du-output-label { display: block; padding-left: 0; margin-top: 3px; }
  .du-demo-code summary span { display: block; margin-left: 0; }
}