:root {
  color-scheme: light dark;
}

/* Light mode (default) */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  margin: 20px;
  background-color: #ffffff;
  color: #000000;
  transition: background-color 0.3s, color 0.3s;
}

textarea {
  background-color: #ffffff;
  color: #000000;
  border: 1px solid #ccc;
  transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

fieldset {
  border: 1px solid #ccc;
  transition: border-color 0.3s;
}

select, button {
  background-color: #ffffff;
  color: #000000;
  border: 1px solid #ccc;
  cursor: pointer;
  transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

button:hover {
  background-color: #f5f5f5;
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
  body {
    background-color: #1a1a1a;
    color: #e0e0e0;
  }

  textarea {
    background-color: #2a2a2a;
    color: #e0e0e0;
    border: 1px solid #444;
  }

  fieldset {
    border: 1px solid #444;
  }

  legend {
    color: #e0e0e0;
  }

  select, button {
    background-color: #2a2a2a;
    color: #e0e0e0;
    border: 1px solid #444;
  }

  button:hover {
    background-color: #3a3a3a;
  }
}

/* GitHub link styling */
.github-link {
  position: fixed;
  bottom: 10px;
  left: 10px;
  font-size: 12px;
  opacity: 0.5;
  transition: opacity 0.3s;
  z-index: 1000;
}

.github-link:hover {
  opacity: 1;
}

.github-link a {
  color: inherit;
  text-decoration: none;
}

.github-link a:hover {
  text-decoration: underline;
}