/* Paper -- atisharma.info theme
 * Aesthetic datapoint: chasm.run (_sass/_crt.scss). Warm paper, single ink,
 * no accent colour; contrast comes from type, not hue.
 * Typography: Playfair Display (headings), Minion Pro (body),
 * Iosevka Nereus (code). All self-hosted.
 */

/* ---------------------------------- fonts --------------------------------- */

@font-face {
  font-family: 'Playfair Display';
  src: url('/assets/fonts/PlayfairDisplay-Roman.ttf') format('truetype');
  font-weight: 400 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Playfair Display';
  src: url('/assets/fonts/PlayfairDisplay-Italic.ttf') format('truetype');
  font-weight: 400 900;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: 'Minion Pro';
  src: url('/assets/fonts/MinionPro-Regular.otf') format('opentype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Minion Pro';
  src: url('/assets/fonts/MinionPro-It.otf') format('opentype');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: 'Minion Pro';
  src: url('/assets/fonts/MinionPro-Bold.otf') format('opentype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Iosevka Nereus';
  src: url('/assets/fonts/IosevkaNereus-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Iosevka Nereus';
  src: url('/assets/fonts/IosevkaNereus-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Iosevka Nereus';
  src: url('/assets/fonts/IosevkaNereus-Italic.woff2') format('woff2');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

/* --------------------------------- palette -------------------------------- */

:root {
  --paper: #fafafa;
  --ink: #151515;
  --dim: #666;
  --line: #999;
}

/* ----------------------------------- base --------------------------------- */

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

html {
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--paper);
  color: var(--ink);
  font-family: 'Minion Pro', Georgia, 'Times New Roman', serif;
  font-size: 19px;
  line-height: 1.55;
}

/* ---------------------------------- links --------------------------------- */
/* chasm.run: links are the same ink as the text, italic, unadorned. */

a {
  color: var(--ink);
  font-style: italic;
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

/* --------------------------------- headings ------------------------------- */

h1, h2, h3, h4, h5, h6 {
  font-family: 'Playfair Display', Georgia, serif;
  font-weight: 600;
  line-height: 1.2;
  color: var(--ink);
  margin: 1.75em 0 0.6em;
}

h1 {
  font-size: 2rem;
  margin-top: 0;
}

h2 {
  font-size: 1.5rem;
}

h3 {
  font-size: 1.2rem;
  font-weight: 600;
  font-style: italic;
}

h4 {
  font-size: 1.05rem;
}

h5, h6 {
  font-size: 1rem;
}

/* ----------------------------------- text --------------------------------- */

p {
  margin-top: 0;
  margin-bottom: 1em;
}

ul, ol {
  margin-top: 0;
  margin-bottom: 1em;
  padding-left: 1.5em;
}

li {
  margin-bottom: 0.3em;
  line-height: 1.45;
}

blockquote {
  margin: 1em 0;
  padding: 0.5em 2em;
  border-left: 2px dotted var(--ink);
  background-color: var(--paper);
  font-family: 'Iosevka Nereus', 'Consolas', 'Monaco', monospace;
  font-size: 1em;
}

blockquote p:last-child {
  margin-bottom: 0;
}

hr {
  height: 0;
  border: 0;
  border-bottom: 1px solid var(--line);
  margin: 2em 0;
}

strong {
  font-weight: 700;
}

em {
  font-style: italic;
}

dt {
  font-style: italic;
  font-weight: 700;
}

/* ----------------------------------- code --------------------------------- */

code {
  font-family: 'Iosevka Nereus', 'Consolas', 'Monaco', monospace;
  font-size: 0.9em;
  color: var(--ink);
}

pre {
  font-family: 'Iosevka Nereus', 'Consolas', 'Monaco', monospace;
  font-size: 0.9em;
  line-height: 1.5;
  margin: 1em 0;
  padding: 0.5em 1em;
  overflow-x: auto;
  background-color: var(--paper);
  border-radius: 2px;
  color: var(--dim);
}

pre code {
  color: var(--ink);
}

/* ---------------------------------- tables -------------------------------- */

table {
  width: 90%;
  margin: 0 0 20px 0;
  border-collapse: collapse;
}

th {
  text-align: left;
  border-bottom: 1px dashed var(--dim);
  padding: 5px 10px;
}

td {
  padding: 5px 10px;
}

/* ---------------------------------- images -------------------------------- */

img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1em 0;
}

/* ------------------------------- kramdown TOC ------------------------------ */

#markdown-toc {
  font-style: italic;
  font-size: 0.95em;
  border-left: 2px dotted var(--dim);
  padding: 0.25em 0 0.25em 1em;
}

#markdown-toc > li {
  margin-bottom: 0.15em;
}

/* -------------------------------- container ------------------------------- */

.container {
  max-width: 66ch;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

/* -------------------------------- masthead -------------------------------- */

.masthead {
  margin-top: 3rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.masthead-title {
  font-family: 'Playfair Display', Georgia, serif;
  font-weight: 700;
  font-size: 1.9rem;
  margin: 0;
}

.masthead-title a {
  font-style: normal;
  text-decoration: none;
}

/* ------------------------------- navigation ------------------------------- */

.nav {
  margin-top: 0.5em;
  margin-bottom: 2.5em;
  text-align: right;
}

.nav-links {
  display: inline;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-links li {
  display: inline;
  margin-bottom: 0;
}

.nav-links li:not(:last-child)::after {
  content: " \00a0\00b7\00a0"; /* nbsp . nbsp */
  color: var(--dim);
  font-style: normal;
}

/* ------------------------------ page and post ------------------------------ */

.page,
.post {
  margin-bottom: 3em;
}

.page-title,
.post-title {
  font-size: 1.75rem;
  margin-top: 1em;
  margin-bottom: 0.5em;
}

/* ------------------------- publication abstracts --------------------------- */
/* reveal/abstract pairs; behaviour wired in _layouts/default.html */

.reveal {
  color: var(--dim);
  font-size: 0.9em;
  font-style: italic;
  cursor: pointer;
}

.reveal:hover {
  text-decoration: underline;
}

.abstract {
  padding-left: 1em;
  border-left: 2px dotted var(--dim);
  cursor: pointer;
}

/* --------------------------------- footer --------------------------------- */

.site-footer {
  margin-top: 3em;
  padding-top: 1em;
  border-top: 1px solid var(--line);
  font-size: 0.85rem;
  color: var(--dim);
}

.site-footer a {
  color: var(--dim);
}

/* ---------------------------------- KaTeX ---------------------------------- */
/* higher specificity to override KaTeX's own 1.21em */

body .katex {
  font-size: 1em;
}

/* ------------------------------- responsive ------------------------------- */

@media (max-width: 30em) {
  body {
    font-size: 17px;
  }

  .masthead {
    margin-top: 1.5rem;
  }

  .nav {
    text-align: left;
  }

  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.35rem;
  }
}