:root {
  --bg: #fafafa;
  --fg: #1a1a1a;
  --muted: #666;
  --link: #0b5fff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111;
    --fg: #eee;
    --muted: #999;
    --link: #6ea0ff;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 16px;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
}

main { text-align: center; }
h1 { margin: 0 0 0.25em; font-size: clamp(2rem, 6vw, 3.5rem); }
p { margin: 0; color: var(--muted); }
a { color: var(--link); }

/* Home page: full-screen sea photo (CC0, Wikimedia Commons: "Calm-sea-haleiwa (Unsplash).jpg") */
.hero {
  background:
    linear-gradient(rgb(0 0 0 / 0.25), rgb(0 0 0 / 0.35)),
    url("/images/sea.jpg") center / cover no-repeat;
  background-color: #3a4250;
  color: #fff;
}
.hero h1 { letter-spacing: 0.02em; text-shadow: 0 2px 16px rgb(0 0 0 / 0.4); }
.hero p { color: rgb(255 255 255 / 0.85); }