/* The Hive's page, set as a page of ihsan.cc: the same tokens, column, type and
   link treatment as the site's essay pages (src/index.css and src/writing/Writing.css
   in the website repo), with Ihsan's design-system values where the site has none
   (the copy button, focus ring, motion). Fonts are the site's own, served from here:
   Newsreader and JetBrains Mono, both SIL OFL 1.1 (licences in fonts/). */

@font-face {
  font-family: 'Newsreader';
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url(fonts/Newsreader-latin.woff2) format('woff2');
}
@font-face {
  font-family: 'Newsreader';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url(fonts/Newsreader-Italic-latin.woff2) format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(fonts/JetBrainsMono-latin.woff2) format('woff2');
}

/* ---- tokens: light, then dark (an explicit choice, or the OS when none is stored) ---- */
:root {
  color-scheme: light;
  --paper: #faf7f1;
  --rule: #e0dad0;
  --ink: #1b1917;
  --ink-soft: #464038;
  --label: #6e6659;
  --link-rule: #cac3b7;
  --code-bg: #f2eee3;
  --diagram-paper: #faf8f3; /* the diagram's own paper, the same in both themes */
  --serif: 'Newsreader', Georgia, 'Times New Roman', serif;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --column: 660px;
  --text: 19px;
}
[data-theme="dark"] {
  color-scheme: dark;
  --paper: #15140f;
  --rule: #2c2a23;
  --ink: #f2efe6;
  --ink-soft: #c3bcae;
  --label: #a19a8c;
  --link-rule: #4a463c;
  --code-bg: #1f1d17;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --paper: #15140f;
    --rule: #2c2a23;
    --ink: #f2efe6;
    --ink-soft: #c3bcae;
    --label: #a19a8c;
    --link-rule: #4a463c;
    --code-bg: #1f1d17;
  }
}

/* ---- base ---- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-synthesis-weight: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; border-radius: 2px; }

.page {
  max-width: calc(var(--column) + 48px);
  margin: 0 auto;
  padding: 32px 24px 64px;
  font-size: var(--text);
  line-height: 1.6;
}
.page p { margin: 0; text-wrap: pretty; }

/* Links are ink with a hairline underline that darkens on hover, as on the site. */
a {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: var(--link-rule);
  text-underline-offset: 3px;
}
a:hover { text-decoration-color: currentColor; }

/* ---- top bar: the trail back to ihsan.cc, the theme switch at the far end ---- */
.top { display: flex; align-items: center; gap: 18px; margin-bottom: 40px; font-size: 15px; line-height: 1.5; }
.top__crumbs { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0 8px; min-width: 0; }
.top__sep, .top__here { color: var(--label); }
.top__here { white-space: nowrap; }

.theme-switch {
  appearance: none;
  position: relative;
  flex: none;
  width: 34px;
  height: 20px;
  padding: 0;
  margin: 0 0 0 auto;
  border: 1px solid var(--label);
  border-radius: 999px;
  background: none;
  color: var(--ink);
  cursor: pointer;
}
.theme-switch::before { content: ''; position: absolute; inset: -8px; }
.theme-switch::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: currentColor;
}
.theme-switch[aria-checked="true"]::after { transform: translateX(14px); }
.theme-switch:hover { border-color: var(--ink); }

/* ---- head: title, standfirst, the page's own links, closed by an ink rule ---- */
.head {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-bottom: 20px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--ink);
}
.title { margin: 0; font-size: 32px; line-height: 1.1; font-weight: 600; letter-spacing: -0.015em; text-wrap: balance; }
.standfirst { font-size: 19px; line-height: 1.5; color: var(--ink-soft); }
.jump { display: flex; flex-wrap: wrap; gap: 0 8px; font-size: 15px; line-height: 1.5; color: var(--label); }
.jump a { color: var(--ink); }
.jump__sep { color: var(--label); }

/* ---- body ---- */
.body { display: flex; flex-direction: column; gap: 16px; }
.body > *, .body section > * { margin: 0; }
.body section { display: flex; flex-direction: column; gap: 16px; }
h2 { margin-top: 24px !important; font-size: 23px; line-height: 1.3; font-weight: 400; text-wrap: balance; }
h3 { margin-top: 8px !important; font-size: 19px; line-height: 1.4; font-weight: 600; }

code {
  font-family: var(--mono);
  font-size: 0.8em;
  background: var(--code-bg);
  padding: 0.1em 0.35em;
  border-radius: 3px;
  overflow-wrap: anywhere;
}
pre {
  position: relative;
  margin: 0 !important;
  padding: 12px 14px;
  background: var(--code-bg);
  border-top: 1px solid var(--ink);
  font: 400 13px/1.55 var(--mono);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
pre code { font: inherit; background: none; padding: 0; border-radius: 0; }

/* The copy button: the design system's button (serif, 6px radius, hairline) on the code fill. */
/* It floats at the top right, so only the first line of a command wraps around it. */
button.copy {
  float: right;
  margin: -5px -6px -10px 14px; /* the negative bottom lets the second line run full width */
  min-height: 28px;
  padding: 2px 10px;
  font: 400 14px/1.4 var(--serif);
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 6px;
  cursor: pointer;
}
button.copy:hover { border-color: var(--ink); }
button.copy:active { background: var(--code-bg); }

/* The command list: each command on a hairline, what it does under it. */
dl { margin: 0; }
dt { padding-top: 12px; margin-top: 12px; border-top: 1px solid var(--rule); line-height: 1.4; }
dt:first-child { margin-top: 0; }
dd { margin: 4px 0 0; font-size: 17px; line-height: 1.5; color: var(--ink-soft); }
dd code { font-size: 0.85em; }

/* The diagram sits on its own paper: invisible in light, a light rounded panel in dark.
   It is never inverted. */
figure { margin: 8px 0 !important; }
.figure__frame { background: var(--diagram-paper); border-radius: 3px; padding: 12px; overflow-x: auto; }
.figure__frame img { display: block; width: 100%; height: auto; }
.figure__zoom { display: block; cursor: zoom-in; }

/* ---- foot: the essay page's pager, pointing on to the essay and the source ---- */
.foot {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 24px;
  margin-top: 56px;
  padding-top: 16px;
  border-top: 1px solid var(--ink);
  font-size: var(--text);
}
.foot__link { flex: 1 1 220px; display: flex; flex-direction: column; gap: 3px; text-decoration: none; }
.foot__link--end { text-align: right; }
.foot__label { font-size: 15px; line-height: 1.5; color: var(--label); }
.foot__title { font-size: 19px; line-height: 1.3; font-weight: 600; overflow-wrap: anywhere; }
.foot__link:hover .foot__title { text-decoration: underline; text-decoration-color: var(--link-rule); text-underline-offset: 3px; }
.foot__home { flex-basis: 100%; font-size: 15px; line-height: 1.5; color: var(--label); }
.foot__home a { color: var(--ink); }

@media (min-width: 720px) {
  .page { padding-top: 80px; padding-bottom: 96px; }
  .title { font-size: 38px; }
  h2 { font-size: 25px; }
  .body, .body section { gap: 18px; }
}
@media (max-width: 640px) {
  .page { --text: 18px; }
  .top a, .top__here { min-height: 32px; display: inline-flex; align-items: center; }
  .foot__link--end { text-align: left; }
}
@media (prefers-reduced-motion: no-preference) {
  a { transition: text-decoration-color 120ms ease; }
  .theme-switch::after { transition: transform 160ms ease; }
}
figcaption { margin-top: 8px; font-size: 15px; line-height: 1.5; color: var(--label); }