/* Shared stylesheet for every lesson and reference page in this workspace. */
:root {
  --paper: #fbfaf7;
  --ink: #1d1d1b;
  --muted: #6b6a64;
  --rule: #dedbd2;
  --accent: #9a3b1b;
  --ok: #2f6b3a;
  --bad: #9a2b1b;
  --code-bg: #f1efe8;
  --serif: "Iowan Old Style", "Palatino Linotype", Charter, Georgia, serif;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root { --paper: #161614; --ink: #e8e6df; --muted: #9a988f; --rule: #34332e; --accent: #e08a62; --ok: #7cc28a; --bad: #e0866f; --code-bg: #22211e; }
}
* { box-sizing: border-box; }
html { background: var(--paper); color: var(--ink); }
body { margin: 0; font: 18px/1.6 var(--serif); }
main { max-width: 680px; margin: 0 auto; padding: 48px 20px 96px; }
header.lesson { border-bottom: 1px solid var(--rule); margin-bottom: 32px; padding-bottom: 16px; }
.kicker { font: 600 12px/1.4 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
h1 { font-weight: 400; font-size: 34px; line-height: 1.2; margin: 8px 0 8px; }
h2 { font-weight: 400; font-size: 24px; margin: 44px 0 8px; }
h3 { font: 600 15px/1.4 var(--sans); margin: 28px 0 6px; }
p, li { hyphens: auto; }
.lede { font-size: 20px; color: var(--muted); }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
code, kbd, pre { font-family: var(--mono); font-size: .86em; }
code { background: var(--code-bg); padding: 1px 4px; border-radius: 3px; }
pre { background: var(--code-bg); padding: 12px 14px; border-radius: 4px; overflow-x: auto; line-height: 1.45; }
pre code { background: none; padding: 0; }
cite.src { font: 12px/1.4 var(--sans); color: var(--muted); font-style: normal; }
cite.src a { color: var(--muted); }
.note { border-left: 3px solid var(--accent); padding: 4px 0 4px 14px; margin: 20px 0; }
.box { border: 1px solid var(--rule); border-radius: 6px; padding: 14px 18px; margin: 20px 0; }
table { border-collapse: collapse; width: 100%; font: 14px/1.45 var(--sans); margin: 16px 0; }
th, td { text-align: left; vertical-align: top; padding: 7px 8px; border-bottom: 1px solid var(--rule); }
th { font-weight: 600; color: var(--muted); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; }
figure { margin: 24px 0; }
figure svg { width: 100%; height: auto; }
figcaption { font: 13px/1.45 var(--sans); color: var(--muted); margin-top: 6px; }
.nav { display: flex; justify-content: space-between; gap: 16px; font: 14px var(--sans); border-top: 1px solid var(--rule); margin-top: 48px; padding-top: 16px; }
.ask { font: 15px/1.5 var(--sans); background: var(--code-bg); border-radius: 6px; padding: 12px 16px; margin-top: 32px; }
details.answer summary { cursor: pointer; font: 14px var(--sans); color: var(--accent); }
.desktop { font: 600 12px/1.4 var(--sans); letter-spacing: .06em; color: var(--muted); border: 1px solid var(--rule); border-radius: 999px; padding: 2px 8px; vertical-align: middle; margin-left: 6px; }
@media (max-width: 600px) {
  body { font-size: 17px; }
  main { padding: 28px 16px 72px; }
  h1 { font-size: 28px; }
  h2 { font-size: 21px; margin-top: 36px; }
  .lede { font-size: 18px; }
  /* wide tables scroll sideways inside themselves instead of pushing the page */
  table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  pre { font-size: 12.5px; }
  .nav { flex-direction: column; }
}
@media print {
  :root { --paper: #fff; --ink: #000; }
  main { max-width: none; padding: 0; }
  .quiz button { border-color: #999; }
  .nav, .ask { display: none; }
  a { color: inherit; }
}