:root {
  --red-200: #fecaca;
  --red-300: #fca5a5;
  --blue-700: #1d4ed8;
  --blue-500: #3b82f6;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --gray-100: #f3f4f6;
  --gray-700: #374151;
  --gray-900: #111827;
  --text: #0f172a;
  --bg: #ffffff;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --red-200: #7f1d1d;
    --red-300: #991b1b;
    --blue-700: #93c5fd;
    --blue-500: #bfdbfe;
    --slate-500: #94a3b8;
    --slate-600: #a5b1c2;
    --slate-700: #cbd5e1;
    --gray-100: #1f2937;
    --gray-700: #d1d5db;
    --gray-900: #f3f4f6;
    --text: #e5e7eb;
    --bg: #0b0f17;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  color: var(--text);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.6;
}

nav.main {
  width: 100%;
  padding: 0.5rem 0.5rem 0.25rem 0.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  border-bottom: 1px solid var(--gray-100);
  align-items: baseline;
  font-size: 0.875rem;
}

nav.main a {
  padding: 0.125rem 0.25rem;
  color: inherit;
  text-decoration: none;
  border-radius: 2px;
  transition: background-color 60ms linear;
}

nav.main a.brand {
  font-weight: 700;
  padding-right: 0.5rem;
}
nav.main a.brand:hover { color: var(--gray-700); }
nav.main a.active { background: var(--red-300); }
nav.main a:not(.active):not(.brand):hover { background: var(--red-200); }

main {
  max-width: 56rem;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

h1 { font-size: 1.5rem; font-weight: 700; margin: 2rem 0 1rem; }
h2 { font-size: 1.25rem; font-weight: 700; margin: 4rem 0 1rem; }
h3 { font-size: 1rem;    font-weight: 700; margin: 2rem 0 0.5rem; }

p { margin: 1rem 0; }

a {
  color: var(--blue-700);
  text-decoration: underline;
  text-underline-offset: 2px;
}
a:hover { color: var(--blue-500); }

.meta,
.date { color: var(--slate-500); font-size: 0.875rem; }

ul.list,
ol.list { padding-left: 1.25rem; }
ul.list li,
ol.list li { margin: 0.5rem 0; }

ul.bare { list-style: none; padding: 0; margin: 1rem 0; }
ul.bare li { margin: 0.75rem 0; }
ul.bare .date { display: inline-block; min-width: 7rem; }

hr {
  border: 0;
  border-top: 1px solid var(--gray-100);
  margin: 2.5rem 0;
}

footer {
  margin-top: 5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--gray-100);
  color: var(--slate-500);
  font-size: 0.875rem;
}

code,
kbd {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
  font-size: 0.9em;
  background: var(--gray-100);
  padding: 0.1em 0.3em;
  border-radius: 3px;
}

pre {
  background: var(--gray-100);
  padding: 0.75rem 1rem;
  border-radius: 4px;
  overflow-x: auto;
  font-size: 0.9em;
}
pre code { background: transparent; padding: 0; }

blockquote {
  margin: 1.5rem 0;
  padding: 0 1rem;
  border-left: 3px solid var(--gray-100);
  color: var(--slate-600);
}