/* 1-Bit Gambit web pages: black and white, like the game's 1988 Macintosh look. */
:root {
  color-scheme: light dark;
  --ink: #000;
  --paper: #fff;
  --muted: #444;
}
@media (prefers-color-scheme: dark) {
  :root { --ink: #fff; --paper: #000; --muted: #bbb; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
main { max-width: 44rem; margin: 0 auto; padding: 2.5rem 1.25rem 4rem; }
.chip {
  display: inline-block;
  font: 800 0.95rem/1 ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  letter-spacing: 0.15em;
  padding: 0.45rem 0.7rem;
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  margin-bottom: 1.5rem;
}
nav { margin: -0.5rem 0 2rem; font: 0.95rem ui-monospace, "SF Mono", Menlo, Consolas, monospace; }
nav a { margin-right: 1.25rem; }
h1 {
  font: 700 1.8rem/1.2 ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  margin: 0 0 0.4rem;
}
.sub { color: var(--muted); margin: 0 0 2rem; font-size: 0.95rem; }
h2 {
  font: 700 1.1rem/1.3 ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  margin: 2.5rem 0 0.6rem;
  padding-top: 1.5rem;
  border-top: 2px dotted var(--ink);
}
.lead { border: 2px solid var(--ink); padding: 1rem 1.2rem; margin: 0 0 1rem; }
.lead p { margin: 0; }
ul { padding-left: 1.2rem; }
li { margin: 0.4rem 0; }
dt { font-weight: 700; margin-top: 1rem; }
dd { margin: 0.25rem 0 0; }
a { color: var(--ink); text-decoration-thickness: 2px; text-underline-offset: 3px; }
a:focus-visible { outline: 3px solid var(--ink); outline-offset: 2px; }
footer {
  margin-top: 3rem; padding-top: 1rem;
  border-top: 2px solid var(--ink);
  color: var(--muted); font-size: 0.9rem;
}