/*
 * NLCo article styles
 *
 * Adapted from the Distill Template styles (Copyright 2018 The Distill
 * Template Authors), licensed under the Apache License, Version 2.0:
 * https://github.com/distillpub/template
 */

@font-face {
  font-family: "NLCo Iowan Old Style";
  src: url("./iowan-old-style/iowan-old-style_regular.woff2") format("woff2");
  font-display: swap;
  font-style: normal;
  font-weight: 400;
}

@font-face {
  font-family: "NLCo Iowan Old Style";
  src: url("./iowan-old-style/iowan-old-style_italic.woff2") format("woff2");
  font-display: swap;
  font-style: italic;
  font-weight: 400;
}

@font-face {
  font-family: "NLCo Iowan Old Style";
  src: url("./iowan-old-style/iowan-old-style_bold.woff2") format("woff2");
  font-display: swap;
  font-style: normal;
  font-weight: 700;
}

:root {
  --text-font: "NLCo Iowan Old Style", "Iowan Old Style BT", "Iowan Old Style", Iowan, Georgia, "Times New Roman", serif;
  --ui-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue", Arial, sans-serif;
  --ink: rgba(0, 0, 0, 0.8);
  --quiet-ink: rgba(0, 0, 0, 0.55);
  --hairline: rgba(0, 0, 0, 0.1);
  --link: #004276;
  --content-min: 280px;
  --content-max: 1920px;
  --content-width: clamp(var(--content-min), 80vw, var(--content-max));
  --toc-width: 15rem;
  --toc-gap: clamp(2rem, 4vw, 6rem);
}

* { box-sizing: border-box; }

html {
  font-size: 14px;
  line-height: 1.6em;
  scroll-behavior: smooth;
  text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}

@media (min-width: 768px) {
  html { font-size: 16px; }
}

body { color: var(--ink); font-family: var(--text-font); margin: 0; }
a {
  color: var(--link);
  text-decoration-line: underline;
  text-decoration-style: dashed;
  text-decoration-thickness: 1px;
  text-underline-offset: .18em;
}
a:hover { text-decoration-style: solid; }
p { margin: 0 0 1em; }

.site-footer {
  display: grid;
  grid-template-columns: [screen-start] 8px [page-start text-start] 1fr [text-end page-end] 8px [screen-end];
  column-gap: 8px;
}

.site-header {
  border-bottom: 1px solid var(--hairline);
  padding: .85rem clamp(1rem, 3vw, 3rem);
}

.site-header,
.site-footer,
.toc,
.article-header,
.article-body h2,
.article-body h3,
.article-body h4 {
  font-family: var(--ui-font);
}

.header-brand {
  align-items: center;
  color: var(--ink);
  display: inline-flex;
  gap: 1.35rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-decoration: none;
}

.site-logo {
  display: block;
  height: 26px;
  max-width: min(134px, 36vw);
  object-fit: contain;
  width: auto;
}

.site-footer {
  color: var(--quiet-ink);
  font-size: .75rem;
  margin-top: 4rem;
  padding: 1.4rem 0;
}

.site-footer::before { content: ""; grid-column: text; }

.home {
  display: grid;
  grid-template-columns: [screen-start] 8px [page-start text-start] 1fr [text-end page-end] 8px [screen-end];
  column-gap: 8px;
  padding: 4rem 0;
}

.home-intro,
.post-list { grid-column: text; }
.home-intro { margin-bottom: 4rem; max-width: 620px; }

.eyebrow,
.tags {
  color: var(--quiet-ink);
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .08em;
  line-height: 1.4em;
  text-transform: uppercase;
}

.home h1 {
  font-size: 3rem;
  letter-spacing: -.045em;
  line-height: 1.05em;
  margin: .35rem 0 .7rem;
}

.home-intro > p:last-child { font-size: 1.15rem; line-height: 1.55em; }
.post-list { border-top: 1px solid var(--hairline); max-width: 680px; }
.post-card { border-bottom: 1px solid var(--hairline); padding: 2rem 0; }
.post-card .eyebrow { margin-bottom: .5rem; }
.post-card h2 { font-size: 1.65rem; letter-spacing: -.025em; line-height: 1.25em; margin: 0 0 .5rem; }
.post-card h2 a { color: inherit; text-decoration: none; }
.post-card h2 a:hover { border-bottom: 1px solid var(--ink); }
.post-card p { color: var(--quiet-ink); }
.post-card .card-authors { color: var(--ink); font-size: .82rem; margin-bottom: 0; }

/* Distill's title measure and scale, adapted for plain generated HTML. */
.article-header {
  width: var(--content-width);
  max-width: calc(100vw - 32px);
  margin: 0 auto;
  padding: 2rem 0 1.5rem;
}

.article-header .eyebrow { margin: 0 0 .7rem; }

.article-header h1 {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -.035em;
  line-height: 1.1em;
  margin: 0 0 .5rem;
}

.dek {
  font-size: 1.2rem;
  font-weight: 300;
  line-height: 1.55em;
  margin: .5rem 0 1.4rem;
}

.authors { font-size: .85rem; font-weight: 500; line-height: 1.8em; margin: 0; }
.authors a { color: var(--ink); text-decoration: none; }
.authors a:hover { text-decoration: underline; }
.authors sup { line-height: 0; }
.authors .author sup + sup {
  font-size: 1.05em;
  margin-left: .06em;
  vertical-align: .16em;
}
.affiliations { color: var(--quiet-ink); font-size: .75rem; line-height: 1.8em; margin: 0; }

.tags { display: flex; flex-wrap: wrap; gap: .35rem; margin-top: 1rem; }
.tags span { border-bottom: 1px solid var(--hairline); padding-bottom: .15rem; }

.article-body {
  border-top: 1px solid var(--hairline);
  color: var(--ink);
  min-width: 0;
  padding: 2rem 0 0;
}

.article-body > * {
  max-width: 100%;
}

.article-body h2 {
  border-bottom: 1px solid var(--hairline);
  font-size: 24px;
  font-weight: 600;
  line-height: 1.25em;
  margin-top: 2rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
}

.article-body h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4em;
  margin-top: 2em;
  margin-bottom: 1em;
}

.article-body h4 {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4em;
  text-transform: uppercase;
}

.article-body a {
  color: inherit;
  text-decoration-color: rgba(0, 0, 0, .5);
}

.article-body a:hover { text-decoration-color: rgba(0, 0, 0, .85); }
.article-body ul, .article-body ol { padding-left: 24px; }
.article-body li { margin-bottom: 1em; }
.article-body blockquote {
  border-left: 2px solid rgba(0, 0, 0, .2);
  color: rgba(0, 0, 0, .6);
  font-style: italic;
  padding-left: 2em;
}

.article-body figure { margin-top: 1.5em; margin-bottom: 2.5em; }
.article-body figure img { display: block; width: 100%; }
.article-body figcaption {
  color: rgba(0, 0, 0, .6);
  font-size: 12px;
  line-height: 1.5em;
  margin-top: .6rem;
}

.article-body figure.l-page { max-width: 1000px; }
.article-body .figure-placeholder {
  align-items: center;
  aspect-ratio: 16 / 7;
  background:
    linear-gradient(135deg, rgba(0, 66, 118, .055), rgba(55, 118, 97, .07)),
    repeating-linear-gradient(135deg, transparent 0 16px, rgba(0, 0, 0, .018) 16px 17px);
  border: 1px dashed rgba(0, 66, 118, .32);
  border-radius: .35rem;
  color: rgba(0, 0, 0, .42);
  display: flex;
  font-family: var(--sans);
  font-size: 12px;
  justify-content: center;
  letter-spacing: .13em;
  min-height: 180px;
  text-transform: uppercase;
}
.article-body pre {
  background: #f6f8fa;
  border: 1px solid rgba(0, 0, 0, .08);
  border-radius: .45rem;
  font-size: 14px;
  overflow: auto;
  padding: 1rem;
  position: relative;
}

.article-body pre code { font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace; }
.copy-code-button {
  align-items: center;
  appearance: none;
  background: rgba(246, 248, 250, .92);
  border: 1px solid rgba(0, 0, 0, .14);
  border-radius: .3rem;
  color: var(--quiet-ink);
  cursor: pointer;
  display: inline-flex;
  height: 2rem;
  justify-content: center;
  padding: 0;
  position: absolute;
  right: .55rem;
  top: .55rem;
  transition: background .15s ease, border-color .15s ease, color .15s ease;
  width: 2rem;
}

.copy-code-button:hover,
.copy-code-button:focus-visible {
  background: #fff;
  border-color: rgba(0, 0, 0, .3);
  color: var(--ink);
  outline: none;
}

.copy-code-button.is-copied { color: #1a7f37; }
.copy-code-button svg { display: block; height: 1rem; width: 1rem; }
.copy-code-button .check-icon { display: none; }
.copy-code-button.is-copied .copy-icon { display: none; }
.copy-code-button.is-copied .check-icon { display: block; }
.hljs-comment,
.hljs-quote { color: #6a737d; }
.hljs-keyword,
.hljs-selector-tag,
.hljs-subst { color: #d73a49; }
.hljs-string,
.hljs-doctag { color: #032f62; }
.hljs-number,
.hljs-literal,
.hljs-attr,
.hljs-attribute { color: #005cc5; }
.hljs-title,
.hljs-title.function_,
.hljs-section { color: #6f42c1; }
.hljs-params,
.hljs-variable,
.hljs-template-variable { color: #e36209; }
.hljs-meta { color: #22863a; }

.backmatter {
  color: rgba(0, 0, 0, .68);
  font-family: var(--ui-font);
  font-size: .78rem;
  line-height: 1.5;
  margin-top: 4rem;
}

.backmatter-section + .backmatter-section { margin-top: 1.7rem; }

.article-body .backmatter h3 {
  border-bottom: 0;
  color: rgba(0, 0, 0, .72);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .06em;
  line-height: 1.35;
  margin: 0 0 .65rem;
  padding: 0;
  text-transform: uppercase;
}

.backmatter p,
.backmatter ul,
.backmatter ol {
  margin-bottom: .75rem;
}

.backmatter ol { padding-left: 1.35rem; }
.backmatter li { margin-bottom: .55rem; padding-left: .25rem; }
.references ol { margin-top: 0; }
.citation { color: var(--link); }

.article-body table {
  border-collapse: separate;
  border-spacing: 0;
  font-size: .85em;
  line-height: 1.45;
  margin: 2rem 0;
  overflow: hidden;
  width: 100%;
}

.article-body th,
.article-body td {
  border-bottom: 1px solid var(--hairline);
  padding: .7rem .85rem;
  text-align: left;
}

.article-body th {
  background: rgba(0, 66, 118, .06);
  color: rgba(0, 0, 0, .7);
  font-size: .78em;
  font-weight: 600;
  letter-spacing: .03em;
}

.article-body tbody tr:hover { background: rgba(0, 0, 0, .025); }

.chart-container {
  height: clamp(240px, 32vw, 420px);
  margin: 2rem 0;
  max-width: 100%;
  position: relative;
}

.chart-container canvas {
  height: 100% !important;
  width: 100% !important;
}

.article-layout {
  max-width: calc(100vw - 32px);
  width: var(--content-width);
  margin: 0 auto;
}

.toc { display: none; }

mjx-container[jax="CHTML"][display="true"] {
  display: block;
  margin: 1.5rem 0 !important;
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
}

@media (min-width: 768px) {
  .site-footer,
  .home {
    grid-template-columns: [screen-start] 1fr [page-start text-start] repeat(8, 45px) [text-end page-end] 1fr [screen-end];
    column-gap: 16px;
  }
  .article-header { padding: 4rem 0 1.5rem; }
}

@media (min-width: 1024px) {
  .article-header h1 { font-size: 50px; }
  .article-body { font-size: 1.06rem; line-height: 1.7em; }
  .article-body h2 { font-size: 36px; }
  .article-body h3 { font-size: 20px; }
  .article-body figcaption { font-size: 13px; }
}

@media (min-width: 1100px) {
  .article-header {
    padding-left: calc(var(--toc-width) + var(--toc-gap));
  }

  .article-layout {
    display: grid;
    grid-template-columns: var(--toc-width) minmax(0, 1fr);
    column-gap: var(--toc-gap);
    align-items: start;
  }

  .toc {
    display: block;
    position: sticky;
    top: 2rem;
    max-height: calc(100vh - 4rem);
    overflow-y: auto;
    color: var(--quiet-ink);
    font-size: .8rem;
    line-height: 1.35;
    padding: 2rem 0 1rem;
  }

  .toc ol { list-style: none; margin: 0; padding: 0; }
  .toc li + li { margin-top: .28rem; }
  .toc .toc-level-3 { padding-left: 1rem; }
  .toc a {
    border-radius: .45rem;
    color: inherit;
    display: block;
    padding: .42rem .55rem;
    text-decoration: none;
  }

  .toc a:hover,
  .toc a.active {
    background: rgba(0, 0, 0, .06);
    color: var(--ink);
  }
}

@media (max-width: 767px) {
  .site-header { padding: .75rem 1rem; }
}