/* Reset */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f9f9f9;
  padding: 2rem;
}

header {
  text-align: center;
  margin-bottom: 2rem;
}

/* Default: logo is black */
header .logo {
  width: 60%;
  max-width: 300px;
  height: auto;
  display: block;
  margin: 0 auto 1rem;
  filter: none;
}

h1 {
  font-size: 2rem;
}

main {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.links {
  margin-top: 2rem;
}

.button {
  display: inline-block;
  margin: 0.5rem;
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  background-color: #007acc;
  color: white;
  border-radius: 5px;
  font-weight: bold;
}

.button:hover {
  background-color: #005fa3;
}

footer {
  margin-top: 3rem;
  text-align: center;
  font-size: 0.875rem;
  color: #666;
}

/* Dark mode: logo becomes white */
@media (prefers-color-scheme: dark) {
  body {
    background-color: #333;
    color: #f9f9f9;
  }

  a {
    color: #1e90ff; /* optional: links in blue for contrast */
  }

  footer {
    color: #999;
  }
}