:root {
  color-scheme: dark;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #100720;
  color: #f7f2ff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 2rem 1.5rem;
  background: radial-gradient(ellipse at top, #392073 0%, #100720 70%);
}

main { width: min(100%, 36rem); text-align: center; }
.moon { display: block; color: #c6a6ff; font-size: 4rem; line-height: 1; }
h1 { margin: 1.5rem 0 1rem; font-size: clamp(3rem, 10vw, 4.5rem); font-weight: 600; letter-spacing: -0.04em; }
p { margin: 0; color: #ded0f4; font-size: 1.125rem; line-height: 1.7; overflow-wrap: anywhere; }

.open-button { display: inline-block; margin-top: 2rem; padding: 0.875rem 1.5rem; border-radius: 999px; background: #c6a6ff; color: #100720; text-decoration: none; font-weight: 600; }
.open-button[hidden] { display: none; }
.open-button:focus-visible { outline: 3px solid #f7f2ff; outline-offset: 4px; }