:root {
  color-scheme: light;
  --ink: #24262a;
  --muted: #666b73;
  --line: #e4e6e9;
  --paper: #fff;
  --surface: #f7f8fa;
  --accent: #365ac5;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font:
    14px/1.55 "Helvetica Neue",
    Helvetica,
    sans-serif;
}
button,
textarea {
  font: inherit;
}
button,
a,
summary {
  -webkit-tap-highlight-color: transparent;
}
button {
  cursor: pointer;
}
a {
  color: var(--accent);
  text-underline-offset: 3px;
}
button:disabled {
  cursor: default;
  opacity: 0.5;
}
button:focus-visible,
summary:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}
[hidden] {
  display: none !important;
}
.topbar {
  height: 58px;
  padding: 0 32px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.wordmark {
  display: flex;
  gap: 10px;
  align-items: center;
  font-weight: 650;
  color: var(--ink);
  text-decoration: none;
}
.mark {
  font: 24px var(--mono);
}
.topbar-meta {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 12px;
}
.source-link {
  color: var(--muted);
  text-decoration: none;
}
.status-pill {
  color: var(--muted);
}
.status-pill i {
  display: inline-block;
  height: 6px;
  width: 6px;
  border-radius: 50%;
  margin-right: 6px;
  background: #8a8f98;
}
.status-pill.ready i {
  background: #388454;
}
main {
  max-width: 1220px;
  margin: auto;
  padding: 0 32px;
}
.hero {
  padding: 28px 0 18px;
}
.eyebrow {
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.09em;
  margin: 0 0 12px;
}
h1 {
  font-size: 32px;
  line-height: 1.18;
  letter-spacing: -0.9px;
  font-weight: 550;
  margin: 0;
}
h1 br {
  display: none;
}
h1 br::after {
  content: " ";
}
.lede {
  color: var(--muted);
  margin: 12px 0 0;
  max-width: 650px;
  font-size: 15px;
}
.hero-detail {
  color: var(--muted);
  margin: 6px 0 0;
  max-width: 650px;
  font-size: 13px;
}
h2 {
  font-size: 17px;
  font-weight: 550;
  letter-spacing: -0.25px;
  margin: 0;
}
.guide {
  padding: 0 0 24px;
  max-width: 850px;
}
.guide .eyebrow {
  display: none;
}
.guide h2 {
  font-size: 14px;
}
.guide p {
  margin: 8px 0;
  color: var(--muted);
  font-size: 12px;
}
.guide ol {
  display: flex;
  flex-wrap: wrap;
  list-style-position: inside;
  gap: 8px 24px;
  margin: 12px 0;
  padding: 0;
  font-size: 12px;
}
.guide li {
  max-width: 250px;
}
.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin: 12px 0;
  font-size: 12px;
}
#recording-source {
  font-size: 11px;
}
.workbench {
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  overflow: hidden;
}
.composer-panel,
.trace-panel {
  padding: 24px;
  min-width: 0;
}
.composer-panel {
  border-right: 1px solid var(--line);
  background: #fcfcfd;
}
.panel-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
  margin: 0 0 24px;
}
.panel-kicker {
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.07em;
  margin: 0 0 5px;
}
.mode-control {
  display: flex;
  padding: 2px;
  background: #edeff2;
  border-radius: 5px;
}
.mode-button {
  border: none;
  background: transparent;
  border-radius: 3px;
  color: var(--muted);
  padding: 4px 9px;
  font-size: 11px;
}
.mode-button.selected {
  background: white;
  color: var(--ink);
  box-shadow: 0 1px 3px #00000010;
}
form label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  margin-bottom: 8px;
}
textarea {
  width: 100%;
  resize: vertical;
  min-height: 108px;
  border: 1px solid #d9dce1;
  border-radius: 5px;
  padding: 13px;
  background: white;
  color: var(--ink);
  line-height: 1.6;
}
textarea:focus {
  outline: 2px solid #365ac529;
  border-color: var(--accent);
}
textarea[readonly] {
  resize: none;
  background: #fff;
}
.examples {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}
.examples button {
  border: 1px solid var(--line);
  color: #505762;
  background: #fff;
  border-radius: 4px;
  padding: 6px 9px;
  font-size: 11px;
}
.examples button:hover,
.examples button[aria-pressed="true"] {
  border-color: #b0bfdf;
  color: #294796;
  background: #f0f4fd;
}
.run-row {
  margin: 20px 0 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}
.run-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 8px 13px;
  border: 1px solid #2e4ead;
  border-radius: 5px;
  color: #fff;
  background: var(--accent);
  font-size: 12px;
  font-weight: 500;
}
.run-button:hover {
  background: #2e4ead;
}
.run-button b {
  font-size: 15px;
  font-weight: 400;
}
.run-row p {
  font-size: 11px;
  color: var(--muted);
  max-width: 240px;
  margin: 0;
}
.reply-card {
  margin-top: 30px;
  border-top: 1px solid var(--line);
  padding-top: 20px;
}
.reply-index {
  font-size: 10px;
  letter-spacing: 0.07em;
  color: var(--muted);
}
.reply-card p {
  font-size: 19px;
  letter-spacing: -0.2px;
  line-height: 1.5;
  margin: 10px 0 0;
  overflow-wrap: anywhere;
}
.trace-heading {
  margin-bottom: 10px;
}
#trace-clock {
  font: 11px var(--mono);
  color: var(--muted);
  padding-top: 5px;
}
.trace-note {
  font-size: 11px;
  color: var(--muted);
  margin: 8px 0;
  line-height: 1.6;
}
.trace-download {
  color: #4a5361;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 5px 9px;
  margin: 4px 0 16px;
  font-size: 11px;
}
.trace-list {
  max-height: 450px;
  overflow-y: auto;
  padding-right: 8px;
  scrollbar-width: thin;
}
.trace-empty {
  padding: 60px 20px;
  text-align: center;
  color: var(--muted);
  font-size: 12px;
}
.loop-glyph {
  font-size: 24px;
  color: #9aa1ad;
}
.trace-step {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr) auto;
  gap: 10px;
  padding: 12px 0;
  border-top: 1px solid #eff0f2;
}
.trace-dot {
  font: 10px var(--mono);
  color: #8a8e96;
  padding-top: 3px;
}
.trace-body h3 {
  margin: 0;
  font-size: 12px;
  font-weight: 550;
}
.step-explanation {
  margin: 4px 0 5px;
  font-size: 11px;
  color: var(--muted);
  line-height: 1.55;
}
.trace-body summary {
  color: var(--accent);
  font-size: 11px;
  cursor: pointer;
  padding: 3px 0;
}
.trace-body pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  margin: 6px 0;
  padding: 10px;
  background: var(--surface);
  border-radius: 4px;
  font: 11px/1.6 var(--mono);
}
.trace-time {
  font: 10px var(--mono);
  color: #767d87;
  padding-top: 3px;
}
.trace-step[data-kind="observe"] .trace-body pre {
  border-left: 2px solid #b7c7ba;
}
.ledger {
  padding: 28px 0 36px;
}
.ledger-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  margin-bottom: 18px;
}
.ledger .eyebrow {
  margin-bottom: 5px;
}
.metrics {
  display: flex;
  gap: 20px;
  font-size: 11px;
  color: var(--muted);
}
.metrics b {
  font-weight: 600;
  color: var(--ink);
  margin-right: 3px;
}
.memory-grid {
  border-top: 1px solid var(--line);
}
.memory-card {
  display: grid;
  grid-template-columns: 100px minmax(100px, 1fr) 1fr;
  gap: 16px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  overflow-wrap: anywhere;
}
.memory-card span,
.memory-empty span {
  font-size: 10px;
  color: var(--muted);
}
.memory-card h3 {
  margin: 0;
  font-size: 13px;
  font-weight: 500;
}
.memory-card p {
  margin: 0;
  font: 13px var(--mono);
}
.memory-empty {
  padding: 16px 0;
  color: var(--muted);
  font-size: 12px;
}
.memory-empty p {
  margin: 6px 0;
}
footer {
  max-width: 1220px;
  margin: auto;
  padding: 20px 32px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted);
  font-size: 11px;
}
footer p {
  margin: 0;
}
@media (max-width: 760px) {
  .topbar {
    padding: 0 18px;
    height: 58px;
  }
  .topbar-meta {
    gap: 10px;
    font-size: 10px;
  }
  .source-link {
    display: none;
  }
  main {
    padding: 0 18px;
  }
  .hero {
    padding-top: 28px;
  }
  h1 {
    font-size: 28px;
  }
  h1 br {
    display: block;
  }
  .guide ol {
    display: block;
  }
  .guide li {
    max-width: none;
    margin-bottom: 6px;
  }
  .workbench {
    grid-template-columns: 1fr;
  }
  .composer-panel {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .composer-panel,
  .trace-panel {
    padding: 18px;
  }
  .ledger-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }
  .metrics {
    gap: 12px;
  }
  .memory-card {
    grid-template-columns: 70px minmax(0, 1fr) 60px;
    gap: 8px;
  }
  .trace-list {
    max-height: 520px;
  }
  footer {
    padding: 18px;
    flex-direction: column;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
  }
}

body[data-preview="recorded"] .guide {
  max-width: none;
  padding-bottom: 18px;
}
body[data-preview="recorded"] footer {
  flex-wrap: wrap;
}
body[data-preview="recorded"] #recording-source {
  flex-basis: 100%;
  margin: 0;
}
body[data-preview="recorded"] .run-row {
  display: none;
}
body[data-preview="recorded"] .lede {
  max-width: 850px;
}