/* CSS is how you can add style to your website, such as colors, fonts, and positioning of your
   HTML content. To learn how to do something, just try searching Google for questions like
   "how to change link color." */

body {
  background-color: white;
  color: black;
  font-family: Verdana;
}
:root{
  --bg: #fbfbfc;
  --text: #15171a;
  --muted: #5b616b;
  --card: #ffffff;
  --border: #e6e8ec;
  --link: #2b5cff;
  --max: 980px;
}

*{ box-sizing: border-box; }
body{
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
}
.wrap{
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 16px;
}
.site-header{
  border-bottom: 1px solid var(--border);
  background: var(--card);
}
.site-header .wrap{
  display: flex;
  gap: 16px;
  align-items: baseline;
  justify-content: space-between;
  padding: 18px 16px;
}
.brand h1{ margin: 0; font-size: 1.35rem; }
.subtitle{ margin: 2px 0 0; color: var(--muted); font-size: .95rem; }

.nav{
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.nav a{
  text-decoration: none;
  color: var(--muted);
  padding: 6px 10px;
  border-radius: 10px;
}
.nav a:hover{ background: #f2f4f7; color: var(--text); }
.nav a.active{ background: #eef2ff; color: var(--text); }

main.wrap{ padding: 22px 16px 40px; }

.card{
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px 18px;
  margin: 14px 0;
}
.card h2{ margin: 0 0 8px; font-size: 1.1rem; }
.card h3{ margin: 0 0 8px; font-size: 1.0rem; }

.grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 800px){
  .site-header .wrap{ flex-direction: column; align-items: flex-start; }
  .grid{ grid-template-columns: 1fr; }
}

a{ color: var(--link); }
.links a{ margin-right: 12px; }

.pubs{ padding-left: 18px; }
.site-footer{
  border-top: 1px solid var(--border);
  background: var(--card);
  padding: 18px 0;
  color: var(--muted);
}