/*
 * press.css — the structural layer.
 * Direct-perception structure: open forms, hairline rules, a single readable
 * measure, mono for labels and numerics. References ONLY the token interface
 * (var(--…)); carries no brand values. Swap tokens.css to re-skin.
 */

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

html {
  font-size: 18px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-weight: 400;
  line-height: 1.6;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.press-paper {
  max-width: 46rem;
  margin: 0 auto;
  padding: 4rem 1.5rem 6rem;
}

/* ---------- Front matter ---------- */
.press-frontmatter {
  margin-bottom: 3rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--line);
}

.press-title {
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 1.25rem;
  letter-spacing: 0.0em;
}

.press-authors {
  font-size: 1.05rem;
  line-height: 1.5;
}

.press-author sup {
  font-family: var(--serif);
  font-size: 0.62em;
  color: var(--ink-muted);
  padding-left: 0.1em;
}

.press-corresponding {
  color: var(--ink-muted);
}

.press-affiliations {
  list-style: none;
  margin: 0.85rem 0 0;
  padding: 0;
  font-size: 0.82rem;
  color: var(--ink-muted);
}

.press-affiliation {
  margin: 0.1rem 0;
}

.press-affiliation sup {
  font-family: var(--serif);
  padding-right: 0.15em;
}

.press-correspondence,
.press-date {
  margin-top: 0.6rem;
  font-size: 0.82rem;
  color: var(--ink-muted);
  font-family: var(--serif);
}

.press-links {
  margin-top: 0.6rem;
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--ink-muted);
}

.press-link {
  color: var(--ink-muted);
  text-decoration: none;
}

.press-link:hover {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.press-link-sep {
  color: var(--line);
  padding: 0 0.15rem;
}

.press-citation {
  margin-top: 0.6rem;
  max-width: 46rem;
  font-size: 0.82rem;
  line-height: 1.4;
  color: var(--ink-muted);
}

/* ---------- Headings ---------- */
h1,
h2,
h3,
h4 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.2;
  color: var(--ink);
  margin: 2.5rem 0 0.75rem;
}

h2 {
  font-size: 1.5rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--line);
}

h3 {
  font-size: 1.2rem;
}

h4 {
  font-size: 1.02rem;
  color: var(--ink-fill);
}

/* ---------- Prose ---------- */
p {
  margin: 1rem 0;
}

a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
  text-decoration-color: var(--ink-muted);
}

a:hover {
  text-decoration-thickness: 2px;
  text-decoration-color: var(--ink);
}

strong,
b {
  font-weight: 600;
}

em,
i {
  font-style: italic;
}

ul,
ol {
  margin: 1rem 0;
  padding-left: 1.6rem;
}

li {
  margin: 0.3rem 0;
}

blockquote {
  margin: 1.25rem 0;
  padding: 0 0 0 1.2rem;
  border-left: 2px solid var(--line);
  color: var(--ink-muted);
  font-style: italic;
}

hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 2.5rem 0;
}

/* ---------- Code ---------- */
code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--wash);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

pre {
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.5;
  overflow-x: auto;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

pre code {
  background: none;
  padding: 0;
}

/* ---------- Tables ---------- */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.92rem;
}

th {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 0.82rem;
  color: var(--ink-muted);
  text-align: left;
}

th,
td {
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid var(--line);
}

td.num,
th.num {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

/* ---------- Figures ---------- */
.press-figure {
  margin: 2.5rem 0;
}

.press-mount {
  display: block;
  width: 100%;
  min-height: 3rem;
}

/* Figure plot text uses the theme font. Observable Plot defaults to system-ui
   via zero-specificity :where() rules, so this ordinary rule overrides it. */
.press-mount svg {
  font-family: var(--serif);
}

.press-figure-img,
.press-static-fallback {
  display: block;
  width: 100%;
  height: auto;
}

figcaption {
  margin-top: 0.85rem;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--ink-muted);
}

/* Match the bold caption lead-in: same serif, weight, and ink. */
.press-figure-label {
  font-weight: 600;
  color: var(--ink-fill);
}

figcaption strong {
  color: var(--ink-fill);
}

/* ---------- References ---------- */
.press-references {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.press-references h2 {
  border: none;
  font-size: 1.25rem;
}

.press-reference-list {
  padding-left: 1.8rem;
  font-size: 0.88rem;
  line-height: 1.5;
}

.press-reference {
  margin: 0.5rem 0;
}

.press-reference::marker {
  font-family: var(--mono);
  color: var(--ink-muted);
}

/* ---------- Acknowledgments ---------- */
.press-acknowledgments {
  font-size: 0.85rem;
}

.press-acknowledgments h2 {
  font-size: 1.1rem;
}

/* ---------- Math ---------- */
.katex {
  font-size: 1.05em;
}

.math-display {
  overflow-x: auto;
  overflow-y: hidden;
  padding: 0.25rem 0;
}

/* ---------- Print ---------- */
@page {
  size: letter;
  margin: 1in;
}

@media print {
  html {
    font-size: 10.5pt;
  }
  body {
    background: var(--paper);
  }
  .press-paper {
    max-width: none;
    padding: 0;
  }
  a {
    text-decoration: none;
    color: var(--ink);
  }
  /* Print the baked static figure (exported screenshot or author image); the
     live interactive mount can't lay out for the print page. */
  .press-mount {
    display: none !important;
  }
  .press-static-fallback {
    display: block !important;
    max-width: 100%;
    height: auto;
    margin: 0 auto;
  }
  .press-figure {
    break-inside: avoid;
  }
  .press-figure img {
    max-width: 100%;
    height: auto;
  }
  h1,
  h2,
  h3,
  h4 {
    break-after: avoid;
  }
}