/* DESIGN ROLL — Field Guide Policy (Appily-onehundredthirteen)
   Composition: sidebar TOC sticky scroll-spy · readable long-form 60–75ch · margin rulebook tabs
   Signature: margin rulebook tabs with § codes and red margin line
   Palette: --fg-* tokens
   Not a cousin of: Bed Rule Book (A110) · Gauge Dial · Seed Packet Fine Print · dual-column legal paste */

.page-a113-fieldpolicy {
  --fp-herb: var(--fg-herb);
  --fp-lavender: var(--fg-lavender);
  --fp-kraft: var(--fg-kraft);
  --fp-bark: var(--fg-bark);
  --fp-margin: #C73E1D;
  --fp-read: 68ch;
}

.fp-mast {
  padding: var(--a113-space-4) 0 var(--a113-space-2);
  text-align: center;
}
.fp-mast h1 {
  margin: 0.15em 0 0.35em;
  font-family: var(--fg-font-logo);
  font-size: var(--a113-type-display);
  font-weight: 400;
  color: var(--fp-bark);
}
.fp-mast p {
  margin: 0 auto;
  max-width: 52ch;
  color: var(--fg-mute);
}
.fp-date {
  display: inline-block;
  margin-top: 0.65em;
  padding: 0.3em 0.75em;
  border-radius: var(--a113-radius-pill);
  background: var(--fp-kraft);
  font-family: var(--fg-font-tab);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fp-bark);
}

.fp-layout {
  display: grid;
  grid-template-columns: minmax(200px, 240px) minmax(0, 1fr);
  gap: var(--a113-space-4);
  align-items: start;
  padding-bottom: var(--a113-space-5);
}

/* Sidebar TOC — sticky scroll-spy */
.fp-toc {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.35em;
  padding: var(--a113-space-2);
  background: var(--fg-wheat);
  border: 2px solid rgba(61, 41, 20, 0.1);
  border-radius: var(--a113-radius-lg);
  transition: box-shadow 0.25s;
}
.fp-toc.is-stuck {
  box-shadow: var(--a113-shadow-soft);
}
.fp-toc-label {
  margin: 0 0 0.35em;
  padding-left: 0.5em;
  font-family: var(--fg-font-tab);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fp-lavender-deep);
}

/* Margin rulebook tabs */
.fp-tab {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.65em 0.75em 0.65em 1.25em;
  border-radius: var(--a113-radius-sm);
  text-decoration: none;
  color: var(--fg-ink);
  font-size: var(--a113-type-sm);
  font-weight: 600;
  transition: background 0.2s, transform 0.2s, padding-left 0.2s;
  border-left: 3px solid transparent;
}
.fp-tab::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35em;
  bottom: 0.35em;
  width: 3px;
  background: var(--fp-margin);
  border-radius: 0 2px 2px 0;
  opacity: 0;
  transition: opacity 0.2s;
}
.fp-tab.is-active,
.fp-tab.is-hover {
  background: var(--a113-surface);
  border-left-color: var(--fp-margin);
  padding-left: 1.35em;
}
.fp-tab.is-active::before,
.fp-tab.is-hover::before { opacity: 1; }
.fp-tab-code {
  flex-shrink: 0;
  font-family: var(--fg-font-tab);
  font-size: 0.68rem;
  font-weight: 800;
  font-style: normal;
  color: var(--fp-herb);
}
.fp-tab.is-active .fp-tab-code { color: var(--fp-lavender-deep); }
.fp-tab-rule {
  margin-left: auto;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--fp-kraft);
  transition: background 0.2s;
}
.fp-tab.is-active .fp-tab-rule { background: var(--fp-herb); }

/* Readable sheet */
.fp-sheet {
  min-width: 0;
}
.fp-article {
  position: relative;
  padding: var(--a113-space-4) var(--a113-space-4) var(--a113-space-4) calc(var(--a113-space-4) + 12px);
  background: var(--a113-surface);
  border: 2px solid rgba(61, 41, 20, 0.1);
  border-radius: var(--a113-radius-lg);
  box-shadow: var(--a113-shadow-soft);
}
.fp-margin-line {
  position: absolute;
  left: 28px;
  top: var(--a113-space-3);
  bottom: var(--a113-space-3);
  width: 2px;
  background: var(--fp-margin);
  opacity: 0.55;
  border-radius: 1px;
}
.fp-sheet-head {
  margin-bottom: var(--a113-space-3);
  padding-bottom: var(--a113-space-2);
  border-bottom: 1px dashed rgba(61, 41, 20, 0.15);
}
.fp-sheet-head p {
  margin: 0;
  font-family: var(--fg-font-tab);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-mute);
}

.fp-body {
  max-width: var(--fp-read);
  font-size: var(--a113-type-sm);
  line-height: 1.65;
  color: var(--fg-ink);
}
.fp-body h2 {
  margin: var(--a113-space-3) 0 0.65em;
  font-family: var(--fg-font-tab);
  font-size: var(--a113-type-md);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fp-bark);
}
.fp-body h2:first-child { margin-top: 0; }
.fp-body p { margin: 0 0 1em; }
.fp-body ul {
  margin: 0 0 1em;
  padding-left: 1.25em;
}
.fp-body li { margin-bottom: 0.45em; }
.fp-body a { color: var(--fp-lavender-deep); }
.fp-body strong { color: var(--fp-bark); }

.fp-cert {
  padding: var(--a113-space-2);
  background: var(--fg-wheat);
  border: 1px dashed rgba(61, 41, 20, 0.2);
  border-radius: var(--a113-radius-sm);
  font-size: 0.78rem;
  line-height: 1.5;
  overflow-x: auto;
  white-space: pre-wrap;
}

.fp-colo {
  margin-top: var(--a113-space-3);
  text-align: center;
  font-size: var(--a113-type-xs);
  color: var(--fg-mute);
}
.fp-colo a { color: var(--fp-herb-deep); }

@media (max-width: 820px) {
  .fp-layout {
    grid-template-columns: 1fr;
  }
  .fp-toc {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
  }
  .fp-tab {
    flex: 1 1 auto;
    min-width: 140px;
  }
  .fp-article {
    padding-left: var(--a113-space-3);
  }
  .fp-margin-line { left: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .fp-tab { transition: none; }
}