:root {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.5;
  font-weight: 400;

  color-scheme: light dark;
  color: rgba(255, 255, 255, 0.87);
  background-color: #0B0B0D;

  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html, body {
  height: 100%;
}

body {
  overflow: hidden;
  margin: 0;
  min-width: 320px;
}

.btn {
  display: inline-block;
  padding: 0.8em 1.6em;
  font-size: 1.1em;
  font-weight: 500;
  text-decoration: none;
  color: #ffffff;
  background-color: #3b82f6;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s;
}

.btn:hover {
  background-color: #2563eb;
}