/* SPDX-License-Identifier: CC0-1.0 */

@font-face {
  font-family: "Source Serif 4";
  src: url("fonts/source-serif-4-vf.ttf") format("truetype");
  font-weight: 200 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Source Serif 4";
  src: url("fonts/source-serif-4-italic-vf.ttf") format("truetype");
  font-weight: 200 900;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Atkinson Hyperlegible";
  src: url("fonts/atkinson-hyperlegible-regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Atkinson Hyperlegible";
  src: url("fonts/atkinson-hyperlegible-bold.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Atkinson Hyperlegible";
  src: url("fonts/atkinson-hyperlegible-italic.ttf") format("truetype");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Atkinson Hyperlegible";
  src: url("fonts/atkinson-hyperlegible-bold-italic.ttf") format("truetype");
  font-weight: 700;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Inconsolata";
  src: url("fonts/inconsolata-regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inconsolata";
  src: url("fonts/inconsolata-bold.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #ffffff;
  --surface: #f8f7f3;
  --surface-2: #fbfaf7;
  --border: #e6e2d8;
  --border-strong: #d2ccbe;
  --text: #1f2937;
  --muted: #667085;
  --heading: #0f172a;
  --link: #1d4ed8;
  --link-hover: #1e40af;
  --shadow: 0 20px 50px rgba(15, 23, 42, 0.08);
  --serif: "Source Serif 4", "Liberation Serif", Georgia, serif;
  --ui: "Atkinson Hyperlegible", "Liberation Sans", ui-sans-serif, system-ui, sans-serif;
  --mono: "Inconsolata", "Liberation Mono", monospace;
  --content-width: 50rem;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body.faif-book {
  margin: 0;
  background:
    radial-gradient(circle at top, rgba(248, 247, 243, 0.9), transparent 32rem),
    var(--bg);
  color: var(--text);
  font-family: var(--serif);
  font-size: 1.06rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

body.faif-book main {
  display: block;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 1.5rem 1rem 4rem;
}

body.faif-book p {
  margin-top: 0;
  margin-bottom: 0;
}

body.faif-book p.indent,
body.faif-book p.noindent {
  text-indent: 0;
}

body.faif-book p + p,
body.faif-book p + figure,
body.faif-book figure + p,
body.faif-book blockquote + p,
body.faif-book p + blockquote,
body.faif-book h2 + p,
body.faif-book h3 + p {
  margin-top: 1rem;
}

body.faif-book .chapterHead + p.indent,
body.faif-book .chapterHead + p.noindent,
body.faif-book .history-head + p.noindent,
body.faif-book .gfdl-head + p.noindent {
  font-size: 1.08rem;
}

.skip-link {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 1000;
  padding: 0.65rem 0.9rem;
  background: #ffffff;
  color: var(--heading);
  border: 2px solid currentColor;
  border-radius: 0.5rem;
  text-decoration: none;
  transform: translateY(-150%);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
}

body.faif-book a {
  color: var(--link);
  text-decoration: underline;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.14em;
}

body.faif-book a:hover,
body.faif-book a:focus {
  color: var(--link-hover);
  text-decoration-thickness: 0.12em;
}

body.faif-book a:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
  border-radius: 0.15rem;
}

/* tex4ht ger Courier-/monospacefragment ett klassnamn som börjar på "pcrr8t"
   (Computer Modern Typewriter i tex4ht:s teckensnittstabell). Vi matchar
   prefixet eftersom den exakta klassen varierar mellan byggen. */
body.faif-book [class*="pcrr8t"] {
  font-family: var(--mono);
}

body.faif-book .maketitle {
  margin: 1.2rem 0 1rem;
  padding: 3.8rem 1.5rem 2.1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1.4rem;
  box-shadow: var(--shadow);
}

body.faif-book .titleHead {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.2rem, 6vw, 3.3rem);
  font-weight: 500;
  line-height: 1.06;
  letter-spacing: 0.01em;
  color: var(--heading);
  text-wrap: balance;
}

body.faif-book .author,
body.faif-book .date,
body.faif-book .maketitle + .center {
  font-family: var(--serif);
}

body.faif-book .author {
  margin-top: 1.1rem;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--muted);
  white-space: normal;
}

body.faif-book .maketitle + .center {
  margin: 0 auto 2rem;
  max-width: 38rem;
  padding: 0.2rem 1rem 1rem;
  color: var(--muted);
  font-size: 0.98rem;
}

body.faif-book .likechapterHead {
  margin-top: 2.4rem;
}

body.faif-book #toc-title {
  margin-bottom: 0.8rem;
  font-size: 1rem;
  line-height: 1.25;
}

body.faif-book #toc-title::before {
  content: "Navigering";
  display: block;
  margin-bottom: 0.45rem;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
}

body.faif-book .tableofcontents {
  margin: 1rem 0 2.4rem;
  padding: 1.1rem 1.15rem 1.2rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 1rem;
}

body.faif-book .tableofcontents br {
  display: none;
}

body.faif-book .chapterToc {
  display: block;
  margin: 0.32rem 0;
  font-family: var(--ui);
  font-size: 0.93rem;
  line-height: 1.38;
}

body.faif-book .chapterToc a {
  color: #344054;
  text-decoration: none;
}

body.faif-book .chapterToc a:hover,
body.faif-book .chapterToc a:focus {
  color: var(--heading);
  text-decoration: underline;
}

body.faif-book .chapterHead,
body.faif-book .likechapterHead,
body.faif-book .sectionHead,
body.faif-book .likesectionHead,
body.faif-book .subsectionHead,
body.faif-book .likesubsectionHead {
  font-family: var(--serif);
  font-weight: 500;
  color: var(--heading);
  line-height: 1.15;
  text-wrap: balance;
}

body.faif-book .chapterHead,
body.faif-book .likechapterHead {
  margin: 3rem 0 1.15rem;
  padding-top: 1.8rem;
  border-top: 1px solid var(--border);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
}

body.faif-book aside.translator-note {
  margin: 2rem 0 2.4rem;
  padding: 1.2rem 1.4rem 1.3rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  box-shadow: var(--shadow);
}

body.faif-book .translator-note-head {
  margin: 0 0 0.6rem;
  font-family: var(--ui);
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.25;
  color: var(--heading);
}

body.faif-book aside.translator-note p.indent,
body.faif-book aside.translator-note p.noindent {
  font-size: 0.98rem;
}

body.faif-book .maketitle + .center + p.noindent {
  font-size: 1.05rem;
  color: #344054;
}

body.faif-book .chapterHead .titlemark {
  display: block;
  margin-bottom: 0.45rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

body.faif-book .likesectionHead,
body.faif-book .sectionHead {
  margin: 2rem 0 0.8rem;
  font-size: 1.36rem;
}

body.faif-book .history-section,
body.faif-book .gfdl-appendix {
  margin-top: 2rem;
}

body.faif-book .history-section {
  padding: 0.2rem 0 1.2rem;
}

body.faif-book .history-section > p {
  padding: 0.95rem 1rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 1rem;
}

body.faif-book .history-section > p + p {
  margin-top: 0.9rem;
}

body.faif-book .gfdl-appendix {
  margin-top: 3rem;
  padding-top: 0.2rem;
}

body.faif-book .gfdl-appendix > p.noindent:first-of-type {
  margin-top: 0.6rem;
}

body.faif-book .gfdl-appendix > p.noindent:first-of-type,
body.faif-book .gfdl-appendix > p.noindent + .center {
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
}

body.faif-book .gfdl-appendix .center {
  margin: 1.5rem auto 0.8rem;
  text-align: center;
}

body.faif-book .gfdl-appendix .center > p.noindent {
  margin: 0;
}

body.faif-book .gfdl-appendix .center:first-of-type {
  max-width: 38rem;
  padding: 1.2rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
}

body.faif-book .gfdl-appendix .center:first-of-type + .center {
  margin-top: 1.2rem;
}

body.faif-book .gfdl-appendix .center:first-of-type + .center > p.noindent {
  display: inline-block;
  padding: 0.35rem 0.8rem;
  background: #eef2ff;
  border: 1px solid #c7d2fe;
  border-radius: 999px;
  font-family: var(--ui);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #3730a3;
}

body.faif-book .gfdl-appendix .center:not(:first-of-type):not(:nth-of-type(2)) > p.noindent {
  display: inline-block;
  padding: 0.3rem 0.55rem;
  font-family: var(--ui);
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--heading);
  border-bottom: 2px solid var(--border);
}

body.faif-book .gfdl-appendix p.indent,
body.faif-book .gfdl-appendix p.noindent,
body.faif-book .gfdl-appendix li {
  font-size: 0.98rem;
}

body.faif-book .gfdl-appendix ul.itemize1 {
  margin: 1rem 0 1rem 1.1rem;
  padding: 1rem 1rem 1rem 1.4rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 1rem;
}

body.faif-book .gfdl-appendix blockquote.quote,
body.faif-book .gfdl-appendix blockquote.quotation {
  font-size: 0.96rem;
}

body.faif-book blockquote.quote,
body.faif-book blockquote.quotation {
  margin: 1.5rem 0;
  padding: 1rem 1.15rem;
  background: var(--surface-2);
  border-left: 4px solid var(--border-strong);
  border-radius: 0 1rem 1rem 0;
  color: #344054;
}

body.faif-book blockquote.quote p,
body.faif-book blockquote.quotation p {
  margin: 0;
}

body.faif-book figure.figure {
  margin: 2rem auto;
}

body.faif-book figure.figure img {
  max-width: 100%;
  height: auto;
  border-radius: 0.75rem;
  border: 1px solid var(--border);
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.09);
  background: #ffffff;
}

body.faif-book figcaption.caption {
  margin: 0.9rem auto 0;
  max-width: 40rem;
  text-align: center;
  text-indent: 0;
  font-family: var(--ui);
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--muted);
}

body.faif-book figcaption.caption .id {
  font-weight: 700;
  color: var(--heading);
}

body.faif-book ul.itemize1,
body.faif-book ol.enumerate1 {
  padding-left: 1.35rem;
}

body.faif-book li {
  margin: 0.5rem 0;
}

body.faif-book sup.textsuperscript {
  line-height: 0;
}

body.faif-book .likesectionHead + p.noindent,
body.faif-book .chapterHead + p.noindent {
  margin-top: 0.4rem;
}

body.faif-book img {
  max-width: 100%;
  height: auto;
}

body.faif-book main:focus {
  outline: none;
}

@media (min-width: 1080px) {
  body.faif-book {
    padding-left: 19rem;
  }

  body.faif-book main {
    max-width: min(var(--content-width), calc(100vw - 23rem));
    padding: 1.5rem 1.5rem 4rem;
  }

  body.faif-book #toc-title {
    position: fixed;
    top: 1rem;
    left: 1rem;
    width: 16rem;
    margin: 0;
    padding: 0 0 0.8rem;
    border-top: 0;
    font-size: 0.98rem;
    z-index: 20;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(10px);
  }

  body.faif-book .tableofcontents {
    position: fixed;
    top: 4.6rem;
    left: 1rem;
    bottom: 0;
    width: 16rem;
    margin: 0;
    padding: 0.9rem 1rem 1rem;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    box-sizing: border-box;
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.06);
  }

  body.faif-book .chapterToc {
    margin: 0.18rem 0;
    font-size: 0.89rem;
    line-height: 1.32;
  }

  body.faif-book .chapterHead {
    scroll-margin-top: 1.2rem;
  }
}

@media (max-width: 1079px) {
  body.faif-book #toc-title {
    margin-top: 2.2rem;
  }

  body.faif-book .tableofcontents {
    max-height: min(24rem, 50vh);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
}

@media (max-width: 720px) {
  body.faif-book {
    font-size: 1rem;
  }

  body.faif-book main {
    padding: 1rem 0.85rem 3rem;
  }

  body.faif-book .maketitle {
    padding: 2.5rem 1rem 1.6rem;
  }

  body.faif-book .chapterHead,
  body.faif-book .likechapterHead {
    margin-top: 2.4rem;
    padding-top: 1.5rem;
    font-size: clamp(1.6rem, 7vw, 2.1rem);
  }

  body.faif-book .sectionHead,
  body.faif-book .likesectionHead {
    font-size: 1.2rem;
  }

  body.faif-book #toc-title {
    margin-top: 2rem;
    font-size: 1rem;
  }

  body.faif-book #toc-title::before {
    margin-bottom: 0.35rem;
    font-size: 0.7rem;
  }

  body.faif-book .tableofcontents {
    padding: 0.95rem 1rem 1rem;
  }

  body.faif-book .history-section > p,
  body.faif-book .gfdl-appendix .center:first-of-type,
  body.faif-book .gfdl-appendix ul.itemize1 {
    padding-left: 0.9rem;
    padding-right: 0.9rem;
  }

  body.faif-book blockquote.quote,
  body.faif-book blockquote.quotation {
    margin-left: 0;
    margin-right: 0;
  }
}