.playground-page {
  min-width: 320px;
}

.playground-nav,
.playground-footer,
.playground-shell {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
}

.playground-nav {
  display: flex;
  min-height: 74px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--rule);
}

.playground-mark {
  color: var(--accent);
  font: 650 1.05rem/1 var(--mono);
  text-decoration: none;
}

.playground-mark span {
  text-decoration: line-through;
  text-decoration-color: var(--danger);
  text-decoration-thickness: 0.08em;
}

.playground-nav nav {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-size: 0.82rem;
}

.playground-nav a:hover {
  color: var(--ink);
}

.playground-hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  padding: 74px 0 58px;
  align-items: end;
}

.playground-hero h1 {
  max-width: 720px;
  margin-bottom: 0;
  font-size: clamp(2.8rem, 7vw, 6.6rem);
}

.playground-intro {
  color: #32343e;
  font-size: 1.05rem;
}

.simulation-note {
  margin-bottom: 0;
  padding: 14px 16px;
  border-left: 3px solid var(--accent);
  background: rgba(251, 251, 255, 0.58);
  color: var(--muted);
  font-size: 0.82rem;
}

.lab {
  padding-top: 44px;
}

.lab-heading {
  display: flex;
  margin-bottom: 30px;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
}

.lab-heading h2 {
  max-width: 680px;
}

.run-button {
  flex: 0 0 auto;
}

.lab-config {
  display: grid;
  grid-template-columns: 1.55fr 1.45fr 0.7fr 0.7fr;
  border: 1px solid var(--rule);
  border-bottom: 0;
  border-radius: 7px 7px 0 0;
  background: var(--paper);
  overflow: hidden;
}

.lab-config label {
  display: grid;
  min-width: 0;
  gap: 7px;
  padding: 14px 16px 16px;
  border-right: 1px solid var(--rule);
}

.lab-config label:last-child {
  border-right: 0;
}

.lab-config label > span {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lab-config input,
.lab-config select {
  width: 100%;
  min-width: 0;
  height: 32px;
  padding: 0;
  border: 0;
  border-radius: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font: 0.76rem/1 var(--mono);
}

.lab-config input:focus-visible,
.lab-config select:focus-visible {
  box-shadow: 0 2px 0 var(--accent);
}

.lab-config input:disabled,
.lab-config select:disabled {
  color: var(--muted);
  opacity: 0.65;
}

.lab-body {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(340px, 0.9fr);
  min-height: 640px;
  border: 1px solid var(--rule);
  background: rgba(251, 251, 255, 0.35);
}

.lifecycle-panel {
  display: grid;
  min-width: 0;
  align-content: start;
  gap: 28px;
  padding: 30px;
  border-right: 1px solid var(--rule);
}

.lifecycle-rail {
  margin: 0;
  padding: 0;
  list-style: none;
}

.lifecycle-rail li {
  position: relative;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) auto;
  gap: 12px;
  min-height: 72px;
  align-items: start;
}

.lifecycle-rail li:not(:last-child)::after {
  position: absolute;
  top: 29px;
  bottom: -4px;
  left: 12px;
  width: 1px;
  background: var(--rule);
  content: "";
}

.lifecycle-rail li > span {
  position: relative;
  z-index: 1;
  display: grid;
  width: 25px;
  height: 25px;
  place-items: center;
  border: 1px solid var(--rule);
  border-radius: 50%;
  background: var(--paper);
  color: var(--muted);
  font: 700 0.62rem/1 var(--mono);
}

.lifecycle-rail strong,
.lifecycle-rail small {
  display: block;
}

.lifecycle-rail strong {
  font-size: 0.92rem;
}

.lifecycle-rail small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.76rem;
}

.stage-status {
  color: var(--muted);
  font: 700 0.64rem/1.4 var(--mono);
  text-transform: uppercase;
}

.lifecycle-rail li[data-status="passed"] > span {
  border-color: var(--success);
  background: var(--success);
  color: white;
}

.lifecycle-rail li[data-status="passed"] .stage-status {
  color: var(--success);
}

.lifecycle-rail li[data-status="failed"] > span {
  border-color: var(--danger);
  background: var(--danger);
  color: white;
}

.credential-ticket {
  position: relative;
  min-width: 0;
  border: 1px solid var(--rule);
  background: var(--paper);
  box-shadow: 0 16px 38px rgba(30, 35, 80, 0.08);
  overflow: hidden;
}

.ticket-edge {
  height: 7px;
  background: repeating-linear-gradient(90deg, var(--accent) 0 12px, transparent 12px 19px);
  opacity: 0.35;
}

.credential-ticket header {
  display: flex;
  padding: 18px 20px 14px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted);
  font: 700 0.68rem/1 var(--mono);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.credential-ticket header strong {
  color: var(--muted);
}

.credential-ticket > code {
  display: block;
  padding: 8px 20px 21px;
  color: var(--accent);
  font: 600 clamp(1.2rem, 3vw, 1.8rem)/1 var(--mono);
  overflow-wrap: anywhere;
}

.credential-ticket dl {
  display: grid;
  grid-template-columns: 1.5fr 0.7fr 0.8fr;
  margin: 0;
  border-top: 1px dashed var(--rule);
}

.credential-ticket dl div {
  min-width: 0;
  padding: 14px 16px;
  border-right: 1px solid var(--rule);
}

.credential-ticket dl div:last-child {
  border-right: 0;
}

.credential-ticket dt {
  color: var(--muted);
  font: 700 0.6rem/1 var(--mono);
  text-transform: uppercase;
}

.credential-ticket dd {
  margin: 7px 0 0;
  font: 0.7rem/1.3 var(--mono);
  overflow-wrap: anywhere;
}

.credential-ticket[data-state="active"] .ticket-edge {
  background: repeating-linear-gradient(90deg, var(--success) 0 12px, transparent 12px 19px);
  opacity: 1;
}

.credential-ticket[data-state="active"] header strong {
  color: var(--success);
}

.credential-ticket[data-state="revoked"] {
  background: repeating-linear-gradient(-45deg, var(--paper) 0 13px, #f8edf0 13px 14px);
}

.credential-ticket[data-state="revoked"] .ticket-edge,
.credential-ticket[data-state="expired"] .ticket-edge {
  background: var(--danger);
  opacity: 1;
}

.credential-ticket[data-state="revoked"] header strong,
.credential-ticket[data-state="expired"] header strong,
.credential-ticket[data-state="revoked"] > code,
.credential-ticket[data-state="expired"] > code {
  color: var(--danger);
  text-decoration: line-through;
}

.step-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.step-controls button,
.evidence-tape button {
  min-height: 38px;
  padding: 0 12px;
  border: 1px solid var(--rule);
  border-radius: 5px;
  background: var(--paper);
  color: var(--ink);
  font: 650 0.76rem/1 var(--sans);
  cursor: pointer;
}

.step-controls button:hover:not(:disabled),
.evidence-tape button:hover:not(:disabled) {
  border-color: var(--accent);
}

.step-controls button:focus-visible,
.evidence-tape button:focus-visible {
  outline: 3px solid rgba(51, 75, 212, 0.3);
  outline-offset: 2px;
}

.step-controls button:disabled,
.evidence-tape button:disabled {
  cursor: not-allowed;
  opacity: 0.42;
}

.step-controls .quiet {
  margin-left: auto;
  background: transparent;
}

.evidence-tape {
  display: grid;
  min-width: 0;
  grid-template-rows: auto 1fr auto;
  background: #12131a;
  color: #f6f6fb;
}

.evidence-tape > header,
.evidence-tape > footer {
  display: flex;
  padding: 20px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.evidence-tape > header {
  border-bottom: 1px solid #343744;
}

.evidence-tape h3 {
  margin: 4px 0 0;
  font: 600 1rem/1.2 var(--mono);
}

.evidence-tape .label {
  margin-bottom: 0;
  color: #9eaaff;
}

.evidence-tape button {
  border-color: #4b4f61;
  background: #1c1e27;
  color: white;
}

.evidence-tape ol {
  max-height: 516px;
  margin: 0;
  padding: 8px 0;
  overflow: auto;
  list-style: none;
}

.event {
  display: grid;
  grid-template-columns: 60px minmax(100px, 0.8fr) 72px minmax(140px, 1.2fr);
  gap: 10px;
  padding: 12px 20px;
  border-bottom: 1px solid #292c37;
  align-items: baseline;
  font: 0.68rem/1.45 var(--mono);
}

.event time,
.event span {
  color: #969aa9;
}

.event code {
  color: #d9dcff;
  overflow-wrap: anywhere;
}

.event strong {
  color: #f6f6fb;
}

.event.passed strong,
.event.closed strong {
  color: #6ed3a9;
}

.event.denied strong,
.event.failed strong {
  color: #ff939f;
}

.event.identity strong {
  color: #aeb7ff;
}

.evidence-json {
  margin: 0 20px 16px;
  border: 1px solid #343744;
  border-radius: 5px;
  background: #0d0e13;
  font: 0.68rem/1.55 var(--mono);
}

.evidence-json summary {
  padding: 10px 12px;
  color: #c8ccef;
  cursor: pointer;
  user-select: none;
}

.evidence-json pre {
  max-height: 240px;
  margin: 0;
  padding: 12px;
  border-top: 1px solid #292c37;
  overflow: auto;
  color: #aeb7ff;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.evidence-json pre:focus-visible {
  outline: 2px solid #8391ff;
  outline-offset: -2px;
}

.evidence-tape > footer {
  border-top: 1px solid #343744;
  color: #969aa9;
  font: 700 0.68rem/1 var(--mono);
  text-transform: uppercase;
}

#proof-result {
  color: #f6f6fb;
}

#proof-result[data-result="passed"] {
  color: #6ed3a9;
}

#proof-result[data-result="failed"] {
  color: #ff939f;
}

.playground-handoff {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: center;
  border-bottom: 0;
}

.handoff-copy > p:not(.label) {
  max-width: 540px;
  color: var(--muted);
}

.playground-workflow pre {
  min-height: 310px;
}

.playground-workflow code {
  font-size: 0.72rem;
}

.playground-footer {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.72rem;
}

@media (max-width: 900px) {
  .playground-hero,
  .playground-handoff {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .lab-config {
    grid-template-columns: 1fr 1fr;
  }

  .lab-config label:nth-child(2) {
    border-right: 0;
  }

  .lab-config label:nth-child(-n + 2) {
    border-bottom: 1px solid var(--rule);
  }

  .lab-body {
    grid-template-columns: 1fr;
  }

  .lifecycle-panel {
    border-right: 0;
    border-bottom: 1px solid var(--rule);
  }

  .evidence-tape ol {
    min-height: 310px;
  }
}

@media (max-width: 620px) {
  .playground-nav,
  .playground-footer,
  .playground-shell {
    width: min(100% - 28px, 620px);
  }

  .playground-nav nav {
    gap: 12px;
    font-size: 0.72rem;
  }

  .playground-hero {
    padding-top: 50px;
  }

  .playground-hero h1 {
    font-size: clamp(2.5rem, 13vw, 4.3rem);
  }

  .lab-heading {
    align-items: stretch;
    flex-direction: column;
  }

  .lab-config {
    grid-template-columns: 1fr;
  }

  .lab-config label {
    border-right: 0;
    border-bottom: 1px solid var(--rule);
  }

  .lab-config label:last-child {
    border-bottom: 0;
  }

  .lifecycle-panel {
    padding: 22px 18px;
  }

  .credential-ticket dl {
    grid-template-columns: 1fr;
  }

  .credential-ticket dl div {
    border-right: 0;
    border-bottom: 1px solid var(--rule);
  }

  .credential-ticket dl div:last-child {
    border-bottom: 0;
  }

  .step-controls button {
    flex: 1 1 calc(50% - 8px);
  }

  .step-controls .quiet {
    margin-left: 0;
  }

  .event {
    grid-template-columns: 52px 1fr 68px;
  }

  .event span {
    grid-column: 2 / -1;
  }

  .playground-footer {
    min-height: 90px;
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
  }
}