:root {
  color-scheme: dark;
  --ink: #f4f7fb;
  --muted: #8992a5;
  --faint: #555e70;
  --canvas: #080b11;
  --panel: #0e131d;
  --panel-raised: #121926;
  --line: #222b3c;
  --blue: #6f9cff;
  --blue-deep: #466fda;
  --green: #62d6a7;
  --red: #ff746e;
  --amber: #f2bd6b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(
      circle at 78% -12%,
      rgb(72 111 218 / 14%),
      transparent 32rem
    ),
    var(--canvas);
  font-family:
    Inter,
    ui-sans-serif,
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    sans-serif;
}

button,
code,
.section-label,
.eyebrow,
.environment,
footer {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
}

button {
  color: inherit;
}

.shell {
  width: min(1240px, calc(100% - 48px));
  margin: 0 auto;
}

.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 88px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  gap: 13px;
  align-items: center;
  color: var(--ink);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.brand > span:last-child span {
  color: var(--blue);
}

.brand-mark {
  display: grid;
  grid-template-columns: repeat(2, 9px);
  gap: 3px;
}

.brand-mark i {
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: var(--blue-deep);
}

.brand-mark i:nth-child(2),
.brand-mark i:nth-child(3) {
  opacity: 0.35;
}

.environment {
  display: flex;
  gap: 9px;
  align-items: center;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.environment-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 16px var(--green);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 285px;
  gap: 80px;
  align-items: end;
  padding: 88px 0 66px;
}

.eyebrow,
.section-label {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 24px;
  font-size: clamp(48px, 7vw, 84px);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.lede {
  max-width: 700px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
}

.guardrail {
  padding: 22px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--blue);
  background: rgb(18 25 38 / 68%);
}

.guardrail span {
  display: block;
  margin-bottom: 10px;
  color: var(--blue);
  font:
    11px 'SFMono-Regular',
    Consolas,
    monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.guardrail strong {
  font-size: 15px;
}

.guardrail p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.control-panel,
.result {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(145deg, rgb(18 25 38 / 96%), rgb(12 17 26 / 96%));
}

.control-panel {
  padding: 32px;
}

.panel-heading,
.verdict-row,
.agents-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}

h2 {
  margin-bottom: 0;
  font-size: 27px;
  letter-spacing: -0.025em;
}

.run-state,
.concurrency {
  margin: 0;
  color: var(--muted);
  font:
    12px 'SFMono-Regular',
    Consolas,
    monospace;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.scenario-picker {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 28px;
  min-inline-size: 0;
  padding: 0;
  border: 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.scenario {
  display: flex;
  gap: 15px;
  align-items: center;
  padding: 19px;
  border: 1px solid var(--line);
  border-radius: 10px;
  text-align: left;
  background: rgb(8 11 17 / 45%);
  cursor: pointer;
  transition: 150ms ease;
}

.scenario:hover,
.scenario:focus-visible {
  border-color: #3b4b69;
  transform: translateY(-1px);
}

.scenario.selected {
  border-color: var(--blue-deep);
  background: rgb(70 111 218 / 12%);
  box-shadow: inset 0 0 0 1px rgb(111 156 255 / 12%);
}

.scenario-code {
  color: var(--faint);
  font-size: 11px;
}

.scenario strong,
.scenario small {
  display: block;
  font-family:
    Inter,
    ui-sans-serif,
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    sans-serif;
}

.scenario strong {
  margin-bottom: 5px;
  font-size: 14px;
}

.scenario small {
  color: var(--muted);
  font-size: 12px;
}

.run-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  margin-top: 18px;
  padding: 18px 22px;
  border: 0;
  border-radius: 9px;
  color: white;
  background: var(--blue-deep);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
}

.run-button:hover:not(:disabled) {
  background: #527ce6;
}

.run-button:disabled {
  cursor: wait;
  opacity: 0.75;
}

.run-button.running span {
  animation: pulse-arrow 900ms infinite alternate;
}

@keyframes pulse-arrow {
  to {
    transform: translateX(6px);
  }
}

.result {
  margin-top: 24px;
  padding: 32px;
  border-top-width: 3px;
}

.result.ready {
  border-top-color: var(--green);
}

.result.blocked {
  border-top-color: var(--red);
}

.result.pending {
  border-top-color: var(--blue);
}

#verdict {
  font:
    700 clamp(25px, 4vw, 42px) 'SFMono-Regular',
    Consolas,
    monospace;
  letter-spacing: -0.04em;
}

.ready #verdict {
  color: var(--green);
}

.blocked #verdict {
  color: var(--red);
}

.pending #verdict {
  color: var(--blue);
}

.verdict-meta {
  display: grid;
  justify-items: end;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
}

.verdict-meta code {
  color: var(--faint);
}

.reasons {
  margin-top: 24px;
  padding: 16px 18px;
  border: 1px solid rgb(255 116 110 / 24%);
  border-radius: 8px;
  color: #ffaaa6;
  background: #231f2b;
}

.reasons p {
  margin: 0;
  font-size: 13px;
}

.agents-heading {
  margin-top: 52px;
}

.agents-heading h3 {
  margin: 0;
  font-size: 20px;
}

.agents {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 20px;
}

.agent-card {
  min-height: 210px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgb(8 11 17 / 44%);
}

.agent-card.pass {
  border-color: rgb(98 214 167 / 28%);
}

.agent-card.fail {
  border-color: rgb(255 116 110 / 32%);
}

.agent-card.working {
  border-color: rgb(111 156 255 / 28%);
}

.agent-topline,
.agent-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--faint);
  font:
    10px 'SFMono-Regular',
    Consolas,
    monospace;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.agent-status {
  color: var(--muted);
}

.pass .agent-status {
  color: var(--green);
}

.fail .agent-status {
  color: var(--red);
}

.working .agent-status {
  color: var(--blue);
}

.agent-card h4 {
  margin: 34px 0 12px;
  font-size: 16px;
}

.agent-card p {
  min-height: 48px;
  margin-bottom: 27px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.agent-foot {
  padding-top: 15px;
  border-top: 1px solid var(--line);
  letter-spacing: 0;
  text-transform: none;
}

.agent-foot code {
  color: var(--blue);
}

.timeline-panel {
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgb(8 11 17 / 35%);
}

.timeline-panel summary {
  display: flex;
  justify-content: space-between;
  padding: 18px 20px;
  color: var(--muted);
  font:
    12px 'SFMono-Regular',
    Consolas,
    monospace;
  cursor: pointer;
  list-style: none;
}

.timeline-panel summary::-webkit-details-marker {
  display: none;
}

.timeline {
  margin: 0;
  padding: 4px 20px 20px;
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: 34px 90px minmax(150px, 1fr) 100px;
  gap: 12px;
  align-items: center;
  padding: 9px 0;
  border-top: 1px solid var(--line);
  font-size: 11px;
}

.timeline li > span,
.timeline li > small {
  color: var(--faint);
  font-family: 'SFMono-Regular', Consolas, monospace;
}

.timeline li > strong {
  color: var(--muted);
  font-size: 11px;
  font-weight: 500;
}

.timeline code {
  color: #aeb9cf;
}

.cloud-note {
  margin: 20px 0 0;
  color: var(--faint);
  font:
    11px/1.6 'SFMono-Regular',
    Consolas,
    monospace;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 34px 0 44px;
  color: var(--faint);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

@media (max-width: 820px) {
  .shell {
    width: min(100% - 28px, 680px);
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 30px;
    padding-top: 60px;
  }

  .scenario-picker,
  .agents {
    grid-template-columns: 1fr;
  }

  .verdict-row,
  .agents-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .verdict-meta {
    justify-items: start;
  }

  .timeline li {
    grid-template-columns: 30px 78px minmax(0, 1fr);
  }

  .timeline code {
    overflow-wrap: anywhere;
  }

  .timeline li > small {
    display: none;
  }
}

@media (max-width: 520px) {
  .shell {
    width: min(100% - 20px, 480px);
  }

  .masthead {
    height: 72px;
  }

  .environment {
    font-size: 9px;
  }

  .hero {
    padding: 48px 0 42px;
  }

  h1 {
    font-size: 46px;
  }

  .control-panel,
  .result {
    padding: 22px;
    border-radius: 12px;
  }

  .panel-heading,
  footer {
    align-items: flex-start;
    flex-direction: column;
  }
}