@font-face {
  font-family: "Geist Mono";
  src: url("/fonts/GeistMono-Variable.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --bg: #fbfaf7;
  --text: #1d1d1b;
  --dim: #6b6a65;
  --rule: #e3e0d8;
  --accent: #b4451f;
  --code-bg: #f1eee7;
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131312;
    --text: #e7e5df;
    --dim: #9a978f;
    --rule: #2b2a27;
    --accent: #ec8358;
    --code-bg: #1d1c1a;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.75 var(--mono);
  font-variant-ligatures: none;
}

main {
  max-width: 44rem;
  margin: 0 auto;
  padding: 4.5rem 1.25rem 3rem;
}

a {
  color: inherit;
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
}
a:hover { color: var(--accent); }

h1 {
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 0.35rem;
}

#field {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

.sub {
  font-size: 0.85rem;
  color: var(--dim);
  margin: 0 0 2.5rem;
}
.sub::after {
  content: "";
  display: inline-block;
  width: 0.55em;
  height: 1.1em;
  margin-left: 0.4em;
  vertical-align: -0.2em;
  background: var(--accent);
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) {
  .sub::after { animation: none; }
}

h2 {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--dim);
  margin: 2.75rem 0 0.75rem;
}
h2::before { content: "## "; color: var(--accent); }

p { margin: 0 0 1.1rem; }

ul { padding-left: 1.2rem; margin: 0 0 1.1rem; }
li { margin-bottom: 0.55rem; }
li::marker { color: var(--accent); }

.meta, .note {
  font-size: 0.8rem;
  color: var(--dim);
}

strong { font-weight: 600; }

code {
  font-size: 0.93em;
  background: var(--code-bg);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

nav {
  font-size: 0.85rem;
  margin-bottom: 3rem;
}
nav a { text-decoration: none; color: var(--dim); }
nav a:hover { color: var(--accent); }

footer {
  margin-top: 4rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  font-size: 0.75rem;
  color: var(--dim);
}
footer p { margin: 0 0 0.3rem; }

/* 404 */
.xid {
  font-size: 0.85rem;
  background: var(--code-bg);
  border-left: 3px solid var(--accent);
  padding: 0.9rem 1rem;
  overflow-x: auto;
  white-space: pre;
  margin: 0 0 1.5rem;
}

@media print {
  #field { display: none; }
}