/* Design tokens: see DESIGN_SYSTEM.md */
:root {
  --paper: #F7F5F0;
  --ink: #1A1814;
  --ledger-line: #D8D3C8;
  --verdict-green: #1E6B45;
  --divergence-red: #9E2B25;
  --anchor-gold: #8C6D1F;

  --font-serif: Georgia, 'Times New Roman', serif;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Inconsolata', monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  line-height: 1.5;
}

h1, h2, h3 {
  font-family: var(--font-serif);
}

a {
  color: var(--anchor-gold);
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.digest {
  color: var(--anchor-gold);
  word-break: break-all;
}

.site-nav {
  display: flex;
  gap: 1.5rem;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--ledger-line);
}

.site-nav a {
  text-decoration: none;
  font-family: var(--font-sans);
}

.page {
  max-width: 68ch;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.explainer section {
  margin-bottom: 2.5rem;
}

.explainer figure {
  margin: 1.5rem 0;
  border: 1px solid var(--ledger-line);
  padding: 1rem;
  background: #fff;
}

.explainer img {
  max-width: 100%;
}

.explainer figcaption {
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: var(--ink);
  margin-top: 0.5rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}

th, td {
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--ledger-line);
  vertical-align: top;
}

th {
  font-family: var(--font-sans);
  color: var(--ink);
}

.page-nav {
  display: flex;
  gap: 1.5rem;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--ledger-line);
}

/* Gate page */

.gate-body {
  display: flex;
  min-height: 100vh;
  align-items: center;
  justify-content: center;
}

.gate-card {
  max-width: 44ch;
  padding: 2.5rem;
  border: 1px solid var(--ledger-line);
  background: #fff;
}

.gate-form {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.gate-form input {
  flex: 1;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--ledger-line);
  font-family: var(--font-mono);
}

.gate-form button {
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  cursor: pointer;
}

.gate-error {
  color: var(--divergence-red);
}

/* Demo page */

.demo-page {
  max-width: none;
  width: 100%;
}

.engine-banner {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: bold;
  padding: 0.5rem 1rem;
  border: 1px solid var(--anchor-gold);
  color: var(--anchor-gold);
}

.engine-banner[data-state="real"] {
  color: var(--verdict-green);
  border-color: var(--verdict-green);
}

.scenario-groups {
  margin: 1.5rem 0;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.scenario-chip {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
  max-width: 22ch;
  padding: 0.75rem 1rem;
  border: 1px solid var(--ledger-line);
  background: #fff;
  font-family: var(--font-sans);
  text-align: left;
  cursor: pointer;
}

.scenario-chip:hover {
  border-color: var(--anchor-gold);
}

.scenario-chip.selected {
  border-color: var(--anchor-gold);
  border-width: 2px;
  background: #fdf9ee;
  box-shadow: 0 1px 4px rgba(140, 109, 31, 0.25);
}

.chip-title {
  font-weight: bold;
}

.chip-blurb {
  font-size: 0.85em;
  color: var(--ink);
}

.chip-claims {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.claim-badge {
  font-family: var(--font-mono);
  font-size: 0.75em;
  padding: 0.1rem 0.4rem;
  border: 1px solid var(--anchor-gold);
  color: var(--anchor-gold);
}

.run-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
  font-size: 0.9em;
}

.dropped-banner {
  color: var(--divergence-red);
  font-weight: bold;
}

.run-view {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .run-view {
    grid-template-columns: 1fr;
  }
}

.run-column {
  border: 1px solid var(--ledger-line);
  padding: 1rem;
  background: #fff;
  min-height: 12rem;
}

.narrator-strip,
.step-list,
.ledger-rail {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  max-height: 20rem;
  overflow-y: auto;
}

.narrator-strip li {
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--ledger-line);
}

.step-list li {
  padding: 0.25rem 0;
  font-family: var(--font-mono);
  font-size: 0.85em;
}

.ledger-anchor {
  border-left: 3px solid var(--anchor-gold);
  padding: 0.35rem 0.5rem;
  margin-bottom: 0.25rem;
  font-size: 0.85em;
}

.anchor-seq {
  font-weight: bold;
}

.anchor-digest {
  color: var(--anchor-gold);
}

.artifact-cards {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.artifact-card {
  border: 1px solid var(--ledger-line);
}

.artifact-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0.75rem;
  background: var(--paper);
  border-bottom: 1px solid var(--ledger-line);
}

.artifact-note {
  padding: 0.5rem 0.75rem;
  margin: 0;
  font-size: 0.85em;
}

.artifact-json {
  margin: 0;
  padding: 0.75rem;
  max-height: 16rem;
  overflow: auto;
  font-size: 0.8em;
  white-space: pre-wrap;
  word-break: break-word;
}

.status-pill {
  font-family: var(--font-mono);
  font-size: 0.75em;
  padding: 0.15rem 0.5rem;
  border-radius: 2px;
  color: #fff;
}

.pill-green { background: var(--verdict-green); }
.pill-red { background: var(--divergence-red); }
.pill-gold { background: var(--anchor-gold); }
.pill-neutral { background: var(--ledger-line); color: var(--ink); }

/* The hidden attribute's UA display:none loses to any author display rule
   (this bit the download button, which showed before a run completed). */
[hidden] {
  display: none !important;
}

.download-bundle {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
}