:root {
  --bg: #0f172a;
  --surface: #ffffff;
  --text: #1e293b;
  --muted: #64748b;
  --accent: #2563eb;
  --maxw: 760px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: #f1f5f9;
}

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.hero {
  background: var(--bg);
  color: #fff;
  padding: 2.5rem 0 2rem;
}

.hero h1 {
  margin: 0;
  font-size: 2.25rem;
}

.hero .title {
  margin: 0.25rem 0 1rem;
  color: #93c5fd;
  font-size: 1.1rem;
}

.contact {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.95rem;
}

.contact a {
  color: #e2e8f0;
  text-decoration: none;
}

.contact a:hover,
.contact a:focus {
  text-decoration: underline;
}

main {
  background: var(--surface);
  margin: 1.5rem auto;
  padding: 1.5rem 1.25rem 0.5rem;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

h2 {
  font-size: 1.25rem;
  border-bottom: 2px solid #e2e8f0;
  padding-bottom: 0.35rem;
  margin-top: 1.75rem;
}

.skills {
  columns: 2;
  gap: 1.5rem;
  padding-left: 1.1rem;
}

.entry {
  margin-bottom: 1.25rem;
}

.entry-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.entry-head h3 {
  margin: 0;
  font-size: 1.05rem;
}

.dates {
  color: var(--muted);
  font-size: 0.9rem;
}

footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  padding: 1rem 0 2rem;
}

#visitor-count {
  font-weight: 700;
  color: var(--accent);
}

a {
  color: var(--accent);
}

@media (max-width: 520px) {
  .skills {
    columns: 1;
  }
  .hero h1 {
    font-size: 1.75rem;
  }
}