/* Okabe Academic — tokens applied to the orderedlist layout.
   Colors are the light-theme tokens from tokens.json; nothing else. */

:root {
  --bg: #ffffff;   /* kept from the original theme, by request; tokens.json says #fefefd */
  --surface: #f3f3f1;
  --hairline: #e3e3df;
  --ink: #1d1d1b;
  --body: #5a5a57;
  --pagenum: #6e6e6a;
  --edge: #adada9;
  --blue: #0072b2;

  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue", Arial, sans-serif;

  --space-xs: 12px;
  --space-s: 24px;
  --space-m: 40px;
  --space-l: 56px;
  --space-xl: 64px;

  --radius-box: 8px;
  --rule-w: 120px;
  --rule-h: 3px;   /* rule-theorem thickness; the 6px rule-title is for slides */
}

body {
  background-color: var(--bg);
  padding: 50px;
  font: 14px/1.5 var(--sans);
  color: var(--body);   /* running text in body grey, as the original theme had it (#595959 there) */
  font-weight: 400;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--ink);
  line-height: 1.1;
  font-weight: 700;
}
h1, h2, h4, h5, h6 { margin: 0 0 20px; }
h3 { margin: 0 0 5px; }

h1 { font-size: 28px; letter-spacing: -0.5px; }
h2 { font-size: 24px; }
h3 { font-size: 17px; }

/* The short blue rule under each section title. */
h2::after {
  content: "";
  display: block;
  width: var(--rule-w);
  height: var(--rule-h);
  background: var(--blue);
  margin-top: var(--space-xs);
}

/* Sections are separated by space, not lines. */
section h2 { margin-top: var(--space-l); }
section h2:first-child { margin-top: 0; }

p, ol, table, pre, dl { margin: 0 0 10px; }
ul { margin-left: 20px; padding-left: 0; list-style: square; }
li { margin-bottom: 6px; }
li::marker { color: var(--edge); }   /* light bullets; edge is a graphics-only token */

a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }
a:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

a small { font-size: 11px; color: var(--body); margin-top: -0.3em; display: block; }
a:hover small { color: var(--body); }

.wrapper { width: 860px; margin: 0 auto; }

blockquote {
  border-left: 1px solid var(--hairline);
  margin: 0;
  padding: 0 0 0 20px;
  font-style: italic;
}

code, pre {
  font-family: Monaco, "Bitstream Vera Sans Mono", "Lucida Console", Terminal, Consolas, "Liberation Mono", "DejaVu Sans Mono", "Courier New", monospace;
  color: var(--ink);
}
pre {
  padding: 8px 15px;
  background: var(--surface);
  border-radius: var(--radius-box);
  border: 1px solid var(--hairline);
  overflow-x: auto;
}

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 5px 10px; border-bottom: 1px solid var(--hairline); }
th { color: var(--ink); border-bottom-color: var(--ink); }
dt { color: var(--ink); font-weight: 700; }

img { max-width: 100%; }

header {
  width: 240px;
  float: left;
  position: fixed;
  -webkit-font-smoothing: subpixel-antialiased;
}
header p { color: var(--body); }

/* Section links in the fixed left column. */
header nav.sections {
  margin-top: var(--space-s);
  text-align: center;
}
header nav.sections a {
  display: block;
  color: var(--ink);
  font-weight: 700;
  line-height: 1.9;
}
header nav.sections a:hover { color: var(--blue); text-decoration: none; }

/* Photo grid on other.html: thumbnails that open the full-size file. */
.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xs);
  margin: var(--space-xs) 0 var(--space-s);
}
.gallery a { display: block; line-height: 0; }
.gallery img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--radius-box);
  background: var(--surface);
}
.gallery a:hover img { outline: 2px solid var(--blue); outline-offset: -2px; }

strong { color: var(--ink); font-weight: 700; }
em { font-style: italic; }

section {
  width: 570px;
  float: right;
  padding-bottom: 50px;
  margin-left: 50px;
}

small { font-size: 11px; }

hr {
  border: 0;
  background: var(--hairline);
  height: 1px;
  margin: 0 0 20px;
}

footer {
  width: 240px;
  float: left;
  position: fixed;
  bottom: 50px;
  color: var(--pagenum);
  -webkit-font-smoothing: subpixel-antialiased;
}

/* Optional in-page nav (currently commented out in index.html). */
.nav {
  width: 620px;
  background-color: var(--surface);
  color: var(--ink);
  float: right;
  margin-top: -13px;
  margin-left: -8px;
  margin-bottom: 20px;
  text-align: center;
  font-size: 90%;
  z-index: 2;
  display: flex;
  justify-content: space-evenly;
  align-items: center;
  height: 50px;
  border-radius: var(--radius-box);
}
.nav div { padding: 0 5px; }
.nav a { color: var(--ink); }
.nav a:hover { color: var(--blue); }

/* Publication entries: bold linked title, venue in parentheses, then a
   sub-bullet with the authors (owner bold) and the links. */
ul.papers > li { margin-bottom: var(--space-xs); }
ul.papers ul { margin: 2px 0 0 18px; }
ul.papers ul li { margin-bottom: 0; color: var(--body); }
ul.papers ul li strong { color: var(--ink); }
a.paper-title { font-weight: 600; color: var(--ink); }
a.paper-title:hover { color: var(--blue); text-decoration: none; }
.venue { color: var(--body); font-style: italic; }
.links a + a { margin-left: 8px; }

@media print, screen and (max-width: 960px) {
  div.wrapper { width: auto; margin: 0; }
  header, section, footer { float: none; position: static; width: auto; }
  header { padding-right: 320px; }
  section {
    border: 1px solid var(--hairline);
    border-width: 1px 0;
    padding: 20px 0;
    margin: 0 0 20px;
  }
  header a small { display: inline; }
}

@media print, screen and (max-width: 720px) {
  body { word-wrap: break-word; }
  header { padding: 0; }
  pre, code { word-wrap: normal; }
}

@media print, screen and (max-width: 480px) {
  body { padding: 15px; }
  .gallery { grid-template-columns: repeat(2, 1fr); }
}

@media print {
  body { padding: 0.4in; font-size: 12pt; color: var(--ink); }
}