:root {
  color-scheme: light dark;
  --bg: #0c0c0c;
  --fg: #f5f5f5;
  --accent: #ffb703;
  --muted: #bbbbbb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header,
nav,
main,
footer {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 1rem;
}

header {
  border-bottom: 2px solid var(--accent);
}

nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 1rem;
}

nav a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

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

main {
  flex: 1;
}

article {
  margin-bottom: 2rem;
}

h1,
h2,
h3 {
  color: var(--accent);
}

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

ul {
  padding-left: 1.25rem;
}

footer {
  border-top: 1px solid var(--accent);
  font-size: 0.9rem;
}