body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, sans-serif;
}

main {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 20px;
}

.with-bottom-nav {
  padding-bottom: 100px;
}