/* 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." */

: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 0;
}

.brand h1{ margin: 0; font-size: 1.35rem; }
.subtitle{ margin: 2px 0 0; color: var(--muted); font-size: .95rem; }

.about{
  display: flex;
  align-items: flex-start;
  gap: 1.5rem; /* space between image and text */
}

.about-photo{
  max-width: 160px;
  height: auto;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.10);
}

.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; }

.grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}


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

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);
}