:root {
  --bg: #fff;
  --text: #111;
  --muted: #555;
  --rule: #e5e5e5;
  --link: #0645ad;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #111; --text: #e6e6e6; --muted: #9a9a9a; --rule: #2a2a2a; --link: #8ab4f8; }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
main, header, footer { max-width: 680px; margin: 0 auto; padding: 0 20px; }
@media (max-width: 480px) { main, header, footer { padding: 0 16px; } body { font-size: 16px; } }

a { color: var(--link); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

header { padding-top: 56px; }
header h1 { font-size: 28px; line-height: 1.2; margin: 0 0 6px; font-weight: 700; }
header h1 a { color: inherit; text-decoration: none; }
header p { margin: 0; color: var(--muted); }
nav { margin-top: 10px; }
nav a { margin-right: 14px; display: inline-block; }

h2 { font-size: 19px; margin: 44px 0 10px; padding-bottom: 6px; border-bottom: 1px solid var(--rule); }
h3 { font-size: 17px; margin: 0; }
p { margin: 0 0 14px; }
ul { margin: 0 0 14px; padding-left: 20px; }
li { margin: 4px 0; }

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

/* Work / project entries */
.entry { margin: 0 0 22px; }
.when { color: var(--muted); font-size: 15px; font-variant-numeric: tabular-nums; }
.entry p, .entry ul { margin: 4px 0 0; }
details { margin-top: 6px; }
summary { cursor: pointer; color: var(--link); font-size: 15px; }
details h4 { font-size: 16px; margin: 12px 0 2px; }

/* Date | text rows */
.rows { list-style: none; padding: 0; }
.rows li { display: grid; grid-template-columns: 92px 1fr; gap: 12px; margin: 6px 0; }
@media (max-width: 480px) { .rows li { grid-template-columns: 1fr; gap: 0; margin: 10px 0; } }

/* Certifications page */
.search { width: 100%; font: inherit; padding: 8px 10px; border: 1px solid var(--rule); border-radius: 4px; background: var(--bg); color: var(--text); margin: 4px 0 6px; }
.certs h3 { font-size: 16px; color: var(--muted); margin: 26px 0 4px; }
.certs ul { list-style: none; padding: 0; margin: 0; }
.certs li { margin: 6px 0; }

footer { margin-top: 56px; padding-top: 16px; padding-bottom: 48px; border-top: 1px solid var(--rule); color: var(--muted); font-size: 15px; }
footer p { margin: 0; }