/* Field — Campo + reader (tokens from design system) */
@import url("fonts.css");
@import url("tokens.css");

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--hs2-font-body);
  font-size: var(--hs2-fs-body);
  line-height: var(--hs2-lh-body);
  color: var(--hs2-ink);
  background: var(--hs2-bg-page);
}

h1,
h2,
h3,
h4,
.campo-brand,
.campo-title {
  font-family: var(--hs2-font-display);
}

a {
  color: var(--hs2-accent-2);
}

/* Keep overlays out of first paint. Author display:grid/flex would otherwise
   override the UA [hidden] { display: none } and bury the canvas. */
.reader[hidden],
.tool-layer[hidden],
.zoom-card[hidden],
.read-continue[hidden],
.book-toc[hidden] {
  display: none !important;
}

.skip {
  position: absolute;
  left: -999px;
  top: 0;
}
.skip:focus {
  left: var(--hs2-space-3);
  top: var(--hs2-space-3);
  z-index: 50;
  background: var(--hs2-psi-5);
  padding: 0.5rem 0.75rem;
}

.muted {
  color: var(--hs2-ink-muted);
}
.err {
  color: var(--hs2-danger);
  white-space: pre-wrap;
  font-family: var(--hs2-font-mono);
  font-size: 0.9rem;
}

/* --- Top bar --- */
.campo-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--hs2-space-3);
  padding: 0.75rem var(--hs2-space-4);
  border-bottom: 1px solid color-mix(in srgb, var(--hs2-ink) 12%, transparent);
  background: color-mix(in srgb, var(--hs2-psi-5) 70%, var(--hs2-bg-page));
}

.campo-brand {
  font-size: 1.35rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--hs2-ink);
  letter-spacing: -0.02em;
}

.campo-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  font-family: var(--hs2-font-ui);
  font-size: 0.92rem;
}

.campo-nav a {
  text-decoration: none;
  color: var(--hs2-ink-muted);
}
.campo-nav a:hover {
  color: var(--hs2-accent-2);
}

.campo-status {
  margin-left: auto;
  font-family: var(--hs2-font-mono);
  font-size: 0.78rem;
}

/* --- unused 3-column shell removed --- */
.lede {
  margin: 0 0 var(--hs2-space-4);
  color: var(--hs2-ink-muted);
  font-size: 0.98rem;
  max-width: 36ch;
}

.block-label {
  margin: var(--hs2-space-4) 0 var(--hs2-space-2);
  font-family: var(--hs2-font-ui);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--hs2-ink-muted);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.chip {
  font-family: var(--hs2-font-ui);
  font-size: 0.8rem;
  padding: 0.35rem 0.65rem;
  border-radius: var(--hs2-radius-s);
  border: 1px solid color-mix(in srgb, var(--hs2-ink) 18%, transparent);
  background: transparent;
  color: var(--hs2-ink);
  cursor: pointer;
}
.chip:hover {
  border-color: var(--hs2-accent-2);
}
.chip--on {
  background: color-mix(in srgb, var(--hs2-accent-2) 16%, transparent);
  border-color: var(--hs2-accent-2);
  color: var(--hs2-ink);
}

.stats-line {
  font-family: var(--hs2-font-ui);
  font-size: 0.8rem;
  margin: var(--hs2-space-3) 0;
}

.chip-empty {
  margin: 0;
  font-size: 0.85rem;
}

.advanced-block {
  margin: var(--hs2-space-4) 0 var(--hs2-space-2);
  border-top: 1px solid color-mix(in srgb, var(--hs2-ink) 10%, transparent);
  padding-top: var(--hs2-space-3);
}
.advanced-block > summary {
  font-family: var(--hs2-font-ui);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--hs2-ink-muted);
  cursor: pointer;
  list-style: none;
}
.advanced-block > summary::-webkit-details-marker {
  display: none;
}
.advanced-block > summary::after {
  content: " ▾";
  font-size: 0.7em;
}
.advanced-block[open] > summary::after {
  content: " ▴";
}
.advanced-hint {
  margin: 0.45rem 0 0.65rem;
  font-size: 0.85rem;
}

.atom-list-panel {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.atom-item {
  text-align: left;
  border: 1px solid transparent;
  border-radius: var(--hs2-radius-s);
  background: color-mix(in srgb, var(--hs2-psi-5) 55%, transparent);
  padding: 0.55rem 0.65rem;
  cursor: pointer;
  font: inherit;
  color: inherit;
}
.atom-item:hover,
.atom-item--on {
  border-color: color-mix(in srgb, var(--hs2-field) 55%, transparent);
  background: color-mix(in srgb, var(--hs2-field) 12%, var(--hs2-psi-5));
}
.atom-item__ch {
  display: block;
  font-size: 0.95rem;
  line-height: 1.35;
  margin: 0;
}
.atom-item__meta {
  display: block;
  font-size: 0.75rem;
  color: var(--hs2-ink-muted);
  margin-top: 0.2rem;
}

/* Stage */
.campo-stage {
  position: relative;
  background: var(--hs2-bg-deep);
  min-height: 280px;
}
.psi-canvas {
  width: 100%;
  height: 100%;
  min-height: calc(100vh - 52px);
  display: block;
  cursor: crosshair;
}
.canvas-hint {
  position: absolute;
  left: 0.75rem;
  bottom: 0.75rem;
  margin: 0;
  font-family: var(--hs2-font-ui);
  font-size: 0.78rem;
  color: rgba(242, 239, 232, 0.72);
}

/* Read panel */
.campo-read {
  border-left: 1px solid color-mix(in srgb, var(--hs2-ink) 10%, transparent);
  background: var(--hs2-psi-5);
}
.read-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--hs2-space-3);
  font-family: var(--hs2-font-ui);
}
.btn-text {
  border: none;
  background: transparent;
  color: var(--hs2-accent-2);
  cursor: pointer;
  font: inherit;
  font-size: 0.9rem;
}
.read-placeholder {
  color: var(--hs2-ink-muted);
  max-width: 36ch;
}
.read-head {
  margin-bottom: var(--hs2-space-4);
}
.read-head h2 {
  margin: 0 0 0.4rem;
  font-size: 1.5rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
}
.read-meta,
.read-book {
  margin: 0;
  font-family: var(--hs2-font-ui);
  font-size: 0.85rem;
  color: var(--hs2-ink-muted);
  line-height: 1.4;
}
.read-body {
  max-width: 38em;
  margin: 0 auto;
  font-family: var(--hs2-font-body);
  font-size: 1.125rem;
  line-height: 1.78;
  color: var(--hs2-psi-5);
  hyphens: auto;
}
.read-body .md-p {
  margin: 0 0 1.05rem;
}
.read-body .md-h {
  margin: 1.6rem 0 0.65rem;
  line-height: 1.25;
  font-family: var(--hs2-font-display);
}
.read-body .md-kicker {
  margin: 1.35rem 0 0.4rem;
  font-family: var(--hs2-font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--hs2-accent-2);
}
.read-body .md-thesis > .md-p:first-of-type::first-letter,
.read-body .md-plain > .md-p:first-of-type::first-letter {
  float: left;
  font-family: var(--hs2-font-display);
  font-size: 3.05em;
  font-weight: 600;
  line-height: 0.78;
  padding: 0.08em 0.1em 0 0;
  color: var(--hs2-accent);
}
.read-body .md-example {
  margin: 1.15rem 0 1.35rem;
  padding: 0.85rem 1rem 0.35rem;
  background: color-mix(in srgb, var(--hs2-psi-3) 16%, var(--hs2-bg-deep));
  border-left: 3px solid var(--hs2-psi-3);
}
.read-body .md-pull {
  margin: 1.25rem 1.5rem;
  padding: 0;
  border: none;
  font-family: var(--hs2-font-display);
  font-size: 1.12em;
  line-height: 1.45;
  color: var(--hs2-ink-muted);
}
.read-body .md-sources,
.read-body .md-sec.md-sources {
  margin: 1.6rem 0 0.4rem;
  padding-top: 0.85rem;
  border-top: 1px solid color-mix(in srgb, var(--hs2-ink) 14%, transparent);
  font-size: 0.92rem;
  color: var(--hs2-ink-muted);
}
.read-body .md-sec.md-formal,
.read-body .md-sec.md-table {
  margin: 1.1rem 0;
  padding: 0.7rem 0.9rem 0.2rem;
  background: color-mix(in srgb, var(--hs2-field) 14%, var(--hs2-bg-deep));
}
.read-body .md-fold {
  margin: 0.85rem 0;
  font-family: var(--hs2-font-ui);
  font-size: 0.88rem;
  color: var(--hs2-ink-muted);
}
.read-body .md-fold summary {
  cursor: pointer;
}
.read-body .md-list {
  margin: 0 0 1rem;
  padding-left: 1.2rem;
}
.read-body .md-rule {
  border: none;
  border-top: 1px solid color-mix(in srgb, var(--hs2-ink) 12%, transparent);
  margin: 1.4rem 0;
}
.read-body mark.md-verify {
  background: color-mix(in srgb, var(--hs2-warn) 22%, transparent);
  color: inherit;
  padding: 0 0.15em;
}
.read-body .md-origin {
  font-size: 0.98rem;
  color: var(--hs2-ink-muted);
}
.read-body .md-gloss {
  font-size: 0.98rem;
}
.read-body .md-table-wrap {
  overflow-x: auto;
  margin: 1rem 0;
}
.read-body .md-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
.read-body .md-table th,
.read-body .md-table td {
  border-bottom: 1px solid color-mix(in srgb, var(--hs2-ink) 12%, transparent);
  padding: 0.4rem 0.55rem;
  text-align: left;
  vertical-align: top;
}
.read-body .eq-block,
.read-body code {
  font-family: var(--hs2-font-mono);
  font-size: 0.88em;
}
.read-body .eq-block {
  background: color-mix(in srgb, var(--hs2-bg-page) 80%, var(--hs2-field));
  padding: 0.75rem 1rem;
  border-radius: var(--hs2-radius-s);
  overflow-x: auto;
  white-space: pre-wrap;
}
.read-body .math-block {
  margin: 1rem 0;
  overflow-x: auto;
}
.read-body .katex-display {
  margin: 0.75rem 0;
}

/* Legacy stub sections (eq list pages reuse) */
.scrim {
  background: color-mix(in srgb, var(--hs2-bg-page) 92%, transparent);
  border: 1px solid color-mix(in srgb, var(--hs2-ink) 12%, transparent);
  border-radius: var(--hs2-radius-m);
  padding: var(--hs2-space-4);
  margin: var(--hs2-space-4) 0;
}
.badge {
  display: inline-block;
  font-family: var(--hs2-font-mono);
  font-size: 0.72rem;
  padding: 0.15rem 0.45rem;
  border-radius: var(--hs2-radius-s);
  border: 1px solid transparent;
}
.badge--implemented {
  background: color-mix(in srgb, var(--hs2-accent-2) 18%, transparent);
  border-color: var(--hs2-accent-2);
  color: var(--hs2-accent-2);
}
.badge--documented {
  background: color-mix(in srgb, var(--hs2-field) 16%, transparent);
  border-color: var(--hs2-field);
}
.badge--stub {
  background: color-mix(in srgb, var(--hs2-warn) 20%, transparent);
  border-color: var(--hs2-warn);
}
.badge--heuristic {
  background: color-mix(in srgb, var(--hs2-accent) 14%, transparent);
  border-color: var(--hs2-accent);
  color: var(--hs2-accent);
}
.aphorism {
  font-family: var(--hs2-font-display);
  font-size: 1.15rem;
  line-height: 1.45;
  border-left: 3px solid var(--hs2-accent);
  padding: var(--hs2-space-3) var(--hs2-space-4);
  margin: var(--hs2-space-3) 0;
  background: color-mix(in srgb, var(--hs2-psi-5) 55%, var(--hs2-bg-page));
}
.aphorism__label {
  display: block;
  font-family: var(--hs2-font-mono);
  font-size: 0.75rem;
  color: var(--hs2-accent);
  margin-bottom: var(--hs2-space-2);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.pedagogy {
  border: 1px dashed var(--hs2-field);
  border-radius: var(--hs2-radius-m);
  padding: var(--hs2-space-3) var(--hs2-space-4);
  background: color-mix(in srgb, var(--hs2-field) 8%, var(--hs2-bg-page));
  margin: var(--hs2-space-4) 0;
}
.pedagogy table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.pedagogy th,
.pedagogy td {
  text-align: left;
  padding: 0.35rem 0.5rem;
  border-bottom: 1px solid color-mix(in srgb, var(--hs2-ink) 10%, transparent);
}
.eq-list {
  list-style: none;
  padding: 0;
  max-width: 48rem;
}
.eq-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: baseline;
  padding: 0.55rem 0;
  border-bottom: 1px solid color-mix(in srgb, var(--hs2-ink) 8%, transparent);
}
.page {
  max-width: 56rem;
  margin: 0 auto;
  padding: var(--hs2-space-5) var(--hs2-space-4);
}
.demo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--hs2-space-4);
  margin-top: var(--hs2-space-4);
}
.demo-panel {
  border: 1px solid color-mix(in srgb, var(--hs2-ink) 12%, transparent);
  border-radius: var(--hs2-radius-m);
  padding: var(--hs2-space-4);
  background: color-mix(in srgb, var(--hs2-psi-5) 70%, var(--hs2-bg-page));
}
.demo-panel canvas {
  width: 100%;
  height: 220px;
  display: block;
  background: var(--hs2-bg-deep);
  border-radius: var(--hs2-radius-s);
  margin: var(--hs2-space-3) 0;
}
.demo-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: end;
  font-family: var(--hs2-font-ui);
  font-size: 0.88rem;
}
.demo-controls label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.demo-controls input[type="range"] {
  width: 120px;
}
.demo-controls button {
  font-family: var(--hs2-font-ui);
  padding: 0.45rem 0.85rem;
  border-radius: var(--hs2-radius-s);
  border: 1px solid var(--hs2-accent-2);
  background: var(--hs2-accent-2);
  color: var(--hs2-psi-5);
  cursor: pointer;
}
.eq-card {
  border-top: 1px solid color-mix(in srgb, var(--hs2-ink) 10%, transparent);
  padding: var(--hs2-space-4) 0;
}
.eq-card h2 {
  font-size: 1.1rem;
  margin: 0 0 0.35rem;
  font-family: var(--hs2-font-mono);
}
.eq-card .latex-mount {
  margin: 0.75rem 0;
  overflow-x: auto;
}

@media (max-width: 1100px) {
  .psi-canvas {
    min-height: 280px;
  }
}

/* --- Home field (sketch: one page, particles, footer cards) --- */
body.home-field {
  background: var(--hs2-bg-deep);
  color: var(--hs2-psi-5);
  overflow-x: hidden;
}

body.home-field .scroll-space {
  height: 0;
  pointer-events: none;
}

body.campo-play .field-canvas,
body.campo-play .zoom-card,
body.campo-play .field-hint,
body.campo-play .glyph-header,
body.campo-play .glyph-cluster,
body.campo-play .mode-switch,
body.campo-play .reader,
body.campo-play .tool-dock {
  display: none !important;
}

.tool-layer__switch {
  display: flex;
  gap: 0.85rem;
  align-items: center;
}

body.home-field .stage {
  position: fixed;
  inset: 0;
  z-index: 1;
}

.glyph-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  pointer-events: none;
  padding: 0.85rem 1.25rem 0;
}

.glyph-header > * {
  pointer-events: auto;
}

.glyph-cluster {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 0;
}

.glyph {
  font-family: var(--hs2-font-display);
  font-size: clamp(2rem, 5vw, 3.1rem);
  font-weight: 600;
  line-height: 1;
  border: none;
  background: transparent;
  color: var(--hs2-psi-5);
  cursor: pointer;
  padding: 0 0.12em;
  opacity: 0.72;
  transition: opacity var(--hs2-dur-1) var(--hs2-ease), transform var(--hs2-dur-1) var(--hs2-ease);
}

.glyph:nth-child(1) {
  transform: rotate(-9deg) translate(6px, 8px);
  color: var(--hs2-accent);
}
.glyph:nth-child(2) {
  transform: rotate(5deg) translate(-4px, -2px);
  color: var(--hs2-field);
}
.glyph:nth-child(3) {
  transform: rotate(-4deg) translate(2px, 6px);
  color: var(--hs2-psi-3);
}
.glyph:nth-child(4) {
  transform: rotate(8deg) translate(-6px, 4px);
  color: var(--hs2-psi-5);
}

.glyph:hover,
.glyph.is-on {
  opacity: 1;
}

.header-tools {
  position: absolute;
  top: 0.85rem;
  left: 1.25rem;
  right: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  pointer-events: none;
}

.header-tools > * {
  pointer-events: auto;
}

.mode-switch {
  display: flex;
  gap: 0.35rem;
}

.mode-switch button {
  font-family: var(--hs2-font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 1px solid rgba(242, 239, 232, 0.22);
  background: transparent;
  color: rgba(242, 239, 232, 0.7);
  border-radius: var(--hs2-radius-s);
  padding: 0.28rem 0.55rem;
  cursor: pointer;
}

.mode-switch button.is-on {
  border-color: rgba(242, 239, 232, 0.55);
  color: var(--hs2-psi-5);
  background: rgba(242, 239, 232, 0.08);
}

.quiet-nav {
  font-family: var(--hs2-font-ui);
  font-size: 0.78rem;
  display: flex;
  gap: 0.85rem;
}

.quiet-nav a,
.quiet-nav .btn-home {
  color: rgba(242, 239, 232, 0.45);
  text-decoration: none;
  border: none;
  background: transparent;
  font: inherit;
  cursor: pointer;
  padding: 0;
}

.quiet-nav a:hover,
.quiet-nav .btn-home:hover {
  color: var(--hs2-psi-5);
}

.sr-status {
  position: absolute;
  right: 1.25rem;
  top: 2.6rem;
  margin: 0;
  font-family: var(--hs2-font-mono);
  font-size: 0.68rem;
  color: rgba(242, 239, 232, 0.4);
}

.field-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  cursor: crosshair;
  touch-action: none;
}

.field-hint {
  position: absolute;
  left: 1rem;
  bottom: 2.2rem;
  margin: 0;
  font-family: var(--hs2-font-ui);
  font-size: 0.75rem;
  color: rgba(242, 239, 232, 0.42);
  max-width: 28ch;
  z-index: 5;
  transition: opacity var(--hs2-dur-2) var(--hs2-ease);
}

.field-hint.is-gone,
body.dock-open .field-hint,
body.tool-open .field-hint {
  opacity: 0;
  pointer-events: none;
}

body.reader-open {
  overflow: hidden;
}

body.reader-open .field-hint,
body.reader-open .zoom-card,
body.reader-open .tool-dock,
body.reader-open .field-hint--tools {
  opacity: 0;
  pointer-events: none;
}

body.reader-open .glyph-header {
  opacity: 1;
  pointer-events: none;
}

body.reader-open .field-canvas {
  pointer-events: none;
}

.reader {
  position: absolute;
  inset: 0;
  z-index: 14;
  display: grid;
  place-items: stretch center;
  overflow: auto;
  padding: 4.6rem 0.8rem 1.2rem;
  background: rgba(14, 26, 31, 0.18);
  color: var(--hs2-psi-5);
  --from-x: 50%;
  --from-y: 42%;
}

.reader:not([hidden]) {
  display: grid;
}

.reader__sheet {
  width: min(44rem, 94vw);
  max-height: min(88vh, 70rem);
  overflow: auto;
  padding: 1.35rem 1.6rem 2.4rem;
  background: color-mix(in srgb, var(--hs2-bg-deep) 88%, var(--hs2-psi-1));
  border: 1px solid rgba(242, 239, 232, 0.12);
  border-radius: 2px;
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.42);
  color: var(--hs2-psi-5);
  transform-origin: var(--from-x) var(--from-y);
  transform: scale(0.92);
  opacity: 0;
  transition:
    transform 640ms var(--hs2-ease),
    opacity 520ms var(--hs2-ease);
}

.reader.is-in .reader__sheet {
  transform: scale(1);
  opacity: 1;
}

.reader__bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
  font-family: var(--hs2-font-ui);
}

.reader__nav {
  display: flex;
  gap: 0.75rem;
}

.book-chrome {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.65rem;
  margin: 0 0 0.45rem;
  padding: 0.35rem 0 0.55rem;
  position: sticky;
  top: 0;
  z-index: 4;
  background: color-mix(in srgb, var(--hs2-bg-deep) 92%, var(--hs2-psi-1));
  font-family: var(--hs2-font-ui);
  border-bottom: 1px solid rgba(242, 239, 232, 0.12);
}

.book-chrome__tools {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.book-crumb {
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.45;
  color: rgba(242, 239, 232, 0.55);
  flex: 1 1 12rem;
  min-width: 0;
}

.book-crumb__sep {
  opacity: 0.45;
  padding: 0 0.15em;
}

.book-progress {
  height: 2px;
  background: color-mix(in srgb, var(--hs2-ink) 12%, transparent);
  margin: 0.35rem 0 0.25rem;
}

.book-progress__bar {
  height: 100%;
  width: 0;
  background: var(--hs2-accent-2);
  transition: width 240ms var(--hs2-ease);
}

.book-progress__label {
  margin: 0 0 0.55rem;
  font-family: var(--hs2-font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--hs2-ink-muted);
}

.book-mode {
  margin: 0 0 1rem;
  font-family: var(--hs2-font-ui);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--hs2-accent-2);
}

.reader--conceitos .book-mode {
  color: var(--hs2-accent);
}

.book-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.reader:has(#readerToc:not([hidden])) .book-layout {
  grid-template-columns: minmax(11rem, 15rem) minmax(0, 1fr);
}

.book-toc {
  border-right: 1px solid color-mix(in srgb, var(--hs2-ink) 12%, transparent);
  padding-right: 0.85rem;
  max-height: min(70vh, 46rem);
  overflow: auto;
}

.book-toc__kicker {
  margin: 0 0 0.55rem;
  font-family: var(--hs2-font-ui);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--hs2-ink-muted);
}

.book-toc__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.reader .btn-text {
  color: var(--hs2-psi-3);
}

.book-toc__item {
  display: block;
  width: 100%;
  text-align: left;
  border: none;
  background: transparent;
  color: var(--hs2-psi-5);
  font-family: var(--hs2-font-ui);
  font-size: 0.8rem;
  line-height: 1.35;
  padding: 0.28rem 0.2rem;
  cursor: pointer;
  border-radius: 2px;
}

.book-toc__item.is-read {
  opacity: 0.55;
}

.book-toc__item.is-current {
  color: var(--hs2-psi-3);
  font-weight: 500;
  opacity: 1;
}

.book-toc__item:hover {
  background: color-mix(in srgb, var(--hs2-accent-2) 10%, transparent);
}

.book-toc__item.is-current {
  color: var(--hs2-accent-2);
  font-weight: 500;
}

.book-page {
  min-width: 0;
}

.read-kicker {
  margin: 0 0 0.35rem;
  font-family: var(--hs2-font-ui);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--hs2-ink-muted);
}

.read-sections {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.7rem;
  align-items: baseline;
  margin: 0 0 1.15rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid color-mix(in srgb, var(--hs2-ink) 10%, transparent);
}

.read-sections[hidden] {
  display: none !important;
}

.read-sections__kicker {
  margin: 0;
  width: 100%;
  font-family: var(--hs2-font-ui);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--hs2-ink-muted);
}

.read-sections__link {
  font-family: var(--hs2-font-ui);
  font-size: 0.82rem;
  color: var(--hs2-accent-2);
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--hs2-accent-2) 35%, transparent);
}

.read-sections__link:hover {
  color: var(--hs2-accent);
}

.book-pager {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid color-mix(in srgb, var(--hs2-ink) 12%, transparent);
  font-family: var(--hs2-font-ui);
}

.book-pager .btn-text:disabled {
  opacity: 0.35;
  cursor: default;
}

.book-keys {
  margin: 0.75rem 0 0;
  font-family: var(--hs2-font-ui);
  font-size: 0.7rem;
  color: var(--hs2-ink-muted);
}

#btnIndice.is-on {
  color: var(--hs2-accent);
}

.eq-refs {
  padding-left: 1.1rem;
}

.eq-refs button {
  font: inherit;
  background: none;
  border: none;
  color: var(--hs2-accent-2);
  cursor: pointer;
  text-align: left;
  padding: 0.15rem 0;
}

.tool-dock {
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  display: flex;
  gap: 1.4rem;
  align-items: flex-end;
  z-index: 8;
  transition:
    inset var(--hs2-dur-2) var(--hs2-ease),
    transform var(--hs2-dur-2) var(--hs2-ease),
    gap var(--hs2-dur-2) var(--hs2-ease),
    padding var(--hs2-dur-2) var(--hs2-ease);
}

.tool-card {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: flex-start;
  width: 5.2rem;
  height: 1.15rem;
  margin: 0;
  padding: 0;
  overflow: hidden;
  cursor: pointer;
  border: 1px solid color-mix(in srgb, var(--hs2-ink) 10%, transparent);
  background: color-mix(in srgb, var(--hs2-psi-5) 88%, var(--hs2-field));
  color: var(--hs2-ink);
  font-family: var(--hs2-font-ui);
  text-align: left;
  border-radius: 14px 14px 0 0;
  transition:
    flex var(--hs2-dur-2) var(--hs2-ease),
    width var(--hs2-dur-2) var(--hs2-ease),
    height var(--hs2-dur-2) var(--hs2-ease),
    border-radius var(--hs2-dur-2) var(--hs2-ease),
    padding var(--hs2-dur-2) var(--hs2-ease);
}

.tool-card__label {
  font-size: 0;
  letter-spacing: 0.04em;
  font-weight: 500;
  opacity: 0;
}

.tool-dock--open {
  left: 0;
  right: 0;
  top: 16%;
  bottom: 0;
  transform: none;
  padding: 0 1.1rem 1.1rem;
  gap: 0.75rem;
  align-items: stretch;
}

.tool-dock--open .tool-card {
  flex: 1 1 0;
  width: auto;
  height: auto;
  padding: 1.35rem 1.15rem;
  border-radius: 32px 6px 6px 6px;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--hs2-psi-1) 18%, var(--hs2-psi-5)), var(--hs2-psi-5) 42%);
}

.tool-dock--open .tool-card:nth-child(2) {
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--hs2-psi-3) 22%, var(--hs2-psi-5)), var(--hs2-psi-5) 46%);
}

.tool-dock--open .tool-card:nth-child(3) {
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--hs2-psi-4) 20%, var(--hs2-psi-5)), var(--hs2-psi-5) 46%);
}

.tool-dock--open .tool-card__label {
  font-size: clamp(0.95rem, 1.6vw, 1.2rem);
  opacity: 1;
}

.tool-dock--open .tool-card.is-focus,
.tool-dock--open .tool-card:hover {
  flex: 1.42 1 0;
}

.tool-layer {
  position: fixed;
  inset: 0;
  z-index: 12;
  background: var(--hs2-bg-deep);
  color: var(--hs2-psi-5);
  display: flex;
  flex-direction: column;
  padding-top: 4.6rem;
}

body.tool-open .glyph-header,
body.sim-on .glyph-header {
  opacity: 0;
  pointer-events: none;
}

body.tool-open .tool-dock,
body.sim-on .tool-dock {
  opacity: 0;
  pointer-events: none;
}

.sim-hud {
  position: fixed;
  left: 1rem;
  bottom: 1.15rem;
  z-index: 30;
  width: min(18rem, calc(100vw - 2rem));
  padding: 0.85rem 1rem 1rem;
  background: color-mix(in srgb, var(--hs2-bg-deep) 82%, var(--hs2-psi-1));
  border: 1px solid rgba(242, 239, 232, 0.14);
  color: var(--hs2-psi-5);
  font-family: var(--hs2-font-ui);
}

.sim-hud[hidden] {
  display: none !important;
}

.sim-hud__title {
  margin: 0 0 0.65rem;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(242, 239, 232, 0.7);
}

.sim-hud__row {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  margin: 0 0 0.55rem;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(242, 239, 232, 0.55);
}

.sim-hud__row input {
  width: 100%;
  accent-color: var(--hs2-psi-3);
}

.sim-hud__actions {
  display: flex;
  gap: 0.75rem;
}

.sim-hud .btn-text {
  color: var(--hs2-psi-3);
}

.tool-layer[hidden],
.reader[hidden],
.zoom-card[hidden],
.read-continue[hidden],
.book-toc[hidden] {
  display: none !important;
}

.tool-layer__bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1.25rem;
  font-family: var(--hs2-font-ui);
  border-bottom: 1px solid rgba(242, 239, 232, 0.12);
}

.tool-layer__bar h2 {
  margin: 0;
  font-size: 1.15rem;
  color: var(--hs2-psi-5);
}

.tool-layer .btn-text {
  color: var(--hs2-psi-5);
}

.tool-layer__stage {
  flex: 1;
  min-height: 0;
}

.tool-canvas {
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
  cursor: crosshair;
}

.tool-layer--sim {
  padding-top: 0;
}

body.tool-open .field-hint,
body.sim-on .field-hint,
body.sim-on .mode-switch {
  display: none;
}

.sim-hud__lede,
.sim-hud__hover,
.sim-hud__theory {
  margin: 0 0 0.55rem;
  font-size: 0.78rem;
  line-height: 1.35;
  text-transform: none;
  letter-spacing: 0;
  color: rgba(242, 239, 232, 0.72);
}

.sim-hud__theory {
  color: rgba(242, 239, 232, 0.55);
}

body.campo-embed .glyph-header,
body.campo-embed .quiet-nav,
body.campo-embed .tool-dock,
body.campo-embed .field-hint,
body.campo-embed .mode-switch,
body.campo-embed .tool-layer__bar {
  display: none !important;
}

body.sim-on .tool-layer__hud,
body.campo-embed #simClose,
body.campo-embed .tool-layer__hud {
  display: none !important;
}

.tool-layer__hud {
  padding: 0.75rem 1.25rem 1rem;
  font-family: var(--hs2-font-ui);
  font-size: 0.88rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  align-items: center;
  background: color-mix(in srgb, var(--hs2-bg-deep) 88%, var(--hs2-psi-1));
}

.tool-layer__hud label {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-size: 0.78rem;
  color: rgba(242, 239, 232, 0.75);
}

.overlay-note {
  margin: 0;
  max-width: 48rem;
}

.overlay-btn {
  font-family: var(--hs2-font-ui);
  padding: 0.4rem 0.8rem;
  border-radius: var(--hs2-radius-s);
  border: 1px solid var(--hs2-psi-5);
  background: transparent;
  color: var(--hs2-psi-5);
  cursor: pointer;
}

@media (max-width: 720px) {
  .reader {
    padding: 0.55rem 0.35rem 0.7rem;
  }
  .reader__sheet {
    width: min(100vw, 40rem);
    max-height: 96vh;
    padding: 1rem 1.05rem 1.6rem;
  }
  .reader:has(#readerToc:not([hidden])) .book-layout {
    grid-template-columns: 1fr;
  }
  .book-toc {
    border-right: none;
    border-bottom: 1px solid color-mix(in srgb, var(--hs2-ink) 12%, transparent);
    padding-right: 0;
    padding-bottom: 0.75rem;
    max-height: 28vh;
  }
  .book-crumb {
    max-width: 100%;
  }
  .read-body {
    font-size: 1.05rem;
    line-height: 1.7;
  }
  .read-body .md-thesis > .md-p:first-of-type::first-letter,
  .read-body .md-plain > .md-p:first-of-type::first-letter {
    font-size: 2.4em;
  }
  .book-pager {
    flex-direction: column;
  }
  .header-tools {
    position: static;
    margin-top: 0.35rem;
  }
  .glyph-cluster {
    margin-top: 2.4rem;
  }
  .tool-dock--open .tool-card__label {
    font-size: 0.82rem;
  }
  .zoom-card {
    width: min(92vw, 28rem);
    max-height: 48vh;
  }
  .mat-rail {
    left: 0.4rem;
  }
}

/* --- Zoom / trecho approaching the reader --- */
.zoom-card {
  position: fixed;
  z-index: 22;
  width: min(38rem, 74vw);
  max-height: min(62vh, 32rem);
  overflow: auto;
  padding: 1.1rem 1.25rem 1.2rem;
  background: var(--hs2-psi-5);
  color: var(--hs2-ink);
  border-radius: var(--hs2-radius-m);
  box-shadow: 0 22px 64px rgba(0, 0, 0, 0.38);
  pointer-events: none;
  transform: translate(-50%, calc(-100% - 14px)) scale(0.42);
  transform-origin: 50% 100%;
  opacity: 0;
  transition:
    transform 280ms var(--hs2-ease),
    opacity 220ms var(--hs2-ease);
}

.zoom-card.is-on {
  transform: translate(-50%, calc(-100% - 14px)) scale(1);
  opacity: 1;
}

.zoom-card h3 {
  margin: 0 0 0.55rem;
  font-size: 1.28rem;
  line-height: 1.25;
}

.zoom-card__meta {
  margin: 0 0 0.3rem;
  font-family: var(--hs2-font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--hs2-ink-muted);
}

.zoom-card__body {
  font-family: var(--hs2-font-body);
  font-size: 1.02rem;
  line-height: 1.62;
}

.zoom-card__body .md-p {
  margin: 0 0 0.75rem;
}

.zoom-card__body .md-table {
  font-size: 0.82rem;
}

.read-body {
  color: var(--hs2-ink);
}

.read-continue {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid color-mix(in srgb, var(--hs2-ink) 12%, transparent);
}

.read-continue__note {
  margin: -0.4rem 0 1rem;
  font-family: var(--hs2-font-ui);
  font-size: 0.85rem;
  color: var(--hs2-ink-muted);
}

.read-related__lede {
  margin: 0 0 0.65rem;
  font-size: 0.98rem;
  line-height: 1.5;
  color: var(--hs2-ink-muted);
}

.read-continue {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid color-mix(in srgb, var(--hs2-ink) 12%, transparent);
}

.read-continue__kicker {
  margin: 1.25rem 0 0.75rem;
  font-family: var(--hs2-font-ui);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--hs2-psi-3);
}

.read-related.is-read {
  opacity: 0.62;
}

.read-related.is-read h4::after {
  content: " · lido";
  font-family: var(--hs2-font-ui);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(242, 239, 232, 0.4);
}

.read-related {
  margin: 0 0 1.75rem;
  padding: 0.85rem 0 0;
}

.read-related__meta {
  margin: 0 0 0.2rem;
  font-family: var(--hs2-font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--hs2-ink-muted);
}

.read-related h4 {
  margin: 0 0 0.65rem;
  font-size: 1.15rem;
  line-height: 1.3;
}

.preset-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.preset-btn {
  font-size: 0.78rem;
}

/* Prism game — still camera, no pointer-lock */
.tool-layer--game .tool-layer__bar {
  position: absolute;
  z-index: 8;
  width: 100%;
  border: none;
  background: transparent;
  pointer-events: none;
}

.tool-layer--game .tool-layer__bar h2 {
  display: none;
}

.tool-layer--game .tool-layer__bar .btn-text {
  pointer-events: auto;
  margin-left: auto;
}

.tool-layer--game .tool-layer__stage {
  flex: 1;
  min-height: 0;
}

.tool-layer--game .tool-layer__hud {
  display: none;
}

.prism-game {
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--hs2-bg-deep);
}

.prism-viewport {
  position: relative;
  flex: 1;
  min-height: 0;
}

.prism-canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: crosshair;
  touch-action: none;
}

.mat-rail {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 0.7rem 0.55rem;
  border-radius: 18px;
  background: rgba(20, 32, 28, 0.55);
  border: 1px solid rgba(242, 239, 232, 0.16);
  cursor: default;
  pointer-events: auto;
}

.mat-rail--right {
  left: auto;
  right: 0.85rem;
}

.mat-rail__kicker {
  font-family: var(--hs2-font-ui);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(242, 239, 232, 0.55);
  writing-mode: horizontal-tb;
  text-align: center;
}

.prism-hint {
  margin: 0;
  padding: 0.35rem 0.8rem 0;
  font-family: var(--hs2-font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: rgba(242, 239, 232, 0.5);
  text-align: center;
}

.prism-pair {
  margin: 0;
  padding: 0.15rem 0.8rem 0.2rem;
  font-family: var(--hs2-font-ui);
  font-size: 0.82rem;
  color: var(--hs2-psi-5);
  text-align: center;
  letter-spacing: 0.04em;
}

.mat-dot {
  width: 1.15rem;
  height: 1.15rem;
  border-radius: 50%;
  border: 2px solid rgba(242, 239, 232, 0.35);
  background: var(--mat, #c4a035);
  cursor: pointer;
  padding: 0;
}

.mat-dot.is-on {
  border-color: var(--hs2-psi-5);
  box-shadow: 0 0 0 3px rgba(242, 239, 232, 0.22);
}

.prism-dock {
  padding: 0.45rem 1.4rem 0.85rem;
}

.prism-sliders {
  display: flex;
  flex-direction: column;
}

.prism-slider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--hs2-font-ui);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: lowercase;
  color: rgba(242, 239, 232, 0.7);
  margin: 0.35rem 0;
}

.prism-slider input {
  flex: 1;
  appearance: none;
  height: 3px;
  background: rgba(242, 239, 232, 0.28);
  border-radius: 1px;
}

.prism-slider input::-webkit-slider-thumb {
  appearance: none;
  width: 13px;
  height: 13px;
  border-radius: 1px;
  background: var(--hs2-psi-5);
  cursor: pointer;
}

.prism-slider input::-moz-range-thumb {
  width: 13px;
  height: 13px;
  border-radius: 1px;
  background: var(--hs2-psi-5);
  border: none;
  cursor: pointer;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .zoom-card {
    transform: translate(-50%, calc(-100% - 14px)) scale(1);
    opacity: 1;
  }
  .reader__sheet {
    transform: none;
    opacity: 1;
  }
  body.reader-open .field-canvas {
    filter: none;
  }
}