/* Shared by every page: fonts, colors, the column, links and the footer.
   Anything only one page uses stays in that page's own <style>. */

/* Fonts are self-hosted (SIL OFL, see fonts/OFL-*.txt) so the site never depends on a third party.
   Both are trimmed to what the site uses: Instrument Sans at width 100 and weights 400 to 600, Newsreader at optical size 24. */
@font-face {
  font-family: 'Instrument Sans';
  src: url('/fonts/instrument-sans.woff2') format('woff2');
  font-weight: 400 600;
  font-display: swap;
}
@font-face {
  font-family: 'Newsreader';
  src: url('/fonts/newsreader.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  --paper: #f7f7f5;
  --ink: #161616;
  --muted: #6b6b6b;
  --rule: #dcdcd8;
  --blood: #8c1c24;
  --underline: #dba8ab;
  --sans: 'Instrument Sans', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Helvetica, Arial, sans-serif;
  --serif: 'Newsreader', 'Iowan Old Style', Charter, Georgia, serif;
  color-scheme: light;
  /* The Aureo bars, deepened so they hold up on paper; dark mode keeps aureo.audio's own. */
  --aureo-1: #2f8f7f;
  --aureo-2: #b04f62;
  --aureo-3: #8f7f2f;
  --aureo-4: #337a9d;
  --aureo-5: #4f5fbf;
}

/* Light or dark follows the system unless the toggle has saved a choice. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --paper: #111111;
    --ink: #ededeb;
    --muted: #8e8e8a;
    --rule: #2e2e2c;
    --blood: #d25a63;
    --underline: #6e3237;
    --aureo-1: #6cc6b7;
    --aureo-2: #c66c7b;
    --aureo-3: #c6b76c;
    --aureo-4: #6ca8c6;
    --aureo-5: #7281cd;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --paper: #111111;
  --ink: #ededeb;
  --muted: #8e8e8a;
  --rule: #2e2e2c;
  --blood: #d25a63;
  --underline: #6e3237;
  --aureo-1: #6cc6b7;
  --aureo-2: #c66c7b;
  --aureo-3: #c6b76c;
  --aureo-4: #6ca8c6;
  --aureo-5: #7281cd;
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--blood);
  color: var(--paper);
}

/* Links rest at 80% opacity with the underline color at 75% (60% effective),
   and both go to full strength on hover. */
a {
  --b: var(--underline);
  --ua: 75%;
  color: inherit;
  text-decoration: underline;
  text-decoration-color: var(--b);
  text-decoration-color: color-mix(in srgb, var(--b) var(--ua), transparent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  opacity: 0.8;
  transition: opacity 0.2s, text-decoration-color 0.2s;
}

a:hover,
a:focus-visible {
  --ua: 100%;
  opacity: 1;
}

a:focus-visible {
  outline: 2px solid var(--blood);
  outline-offset: 3px;
  border-radius: 2px;
}

/* One quiet column. */
main {
  max-width: 720px;
  margin: 0 auto;
  padding: clamp(48px, 12vw, 136px) 24px 96px;
  display: grid;
  gap: clamp(56px, 9vw, 88px);
}

h1,
h2,
h3,
p,
ol,
ul,
dl,
dd {
  margin: 0;
  padding: 0;
}

ol,
ul {
  list-style: none;
}

h1 {
  font-size: 15px;
  font-weight: 500;
  font-stretch: 100%;
}

.muted {
  color: var(--muted);
}

/* Every page opens the same way: the name and headline, then one line in the serif. */
.name {
  font-weight: 500;
}

.intro {
  font-family: var(--serif);
  font-size: clamp(21px, 3.2vw, 26px);
  font-weight: 400;
  line-height: 1.35;
  letter-spacing: -0.005em;
  max-width: 30ch;
  text-wrap: pretty;
}

footer {
  width: min(672px, calc(100% - 48px));
  margin: 0 auto;
  padding: 24px 0 40px;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 24px;
  font-size: 13px;
  color: var(--muted);
}

footer small {
  font-size: inherit;
}

footer .sep {
  padding: 0 0.25em;
}

footer a {
  color: var(--ink);
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}

/* Print in light, whatever mode is on screen. */
@media print {
  :root:not(#print) {
    color-scheme: light;
    --paper: #fff;
    --ink: #161616;
    --muted: #6b6b6b;
    --rule: #dcdcd8;
    --blood: #8c1c24;
    --underline: #dba8ab;
    --aureo-1: #2f8f7f;
    --aureo-2: #b04f62;
    --aureo-3: #8f7f2f;
    --aureo-4: #337a9d;
    --aureo-5: #4f5fbf;
  }
}