:root {
  --theme-font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --theme-navbar-bg: #343a40;
  --theme-navbar-text: #ffffff;
  --theme-page-background: #ffffff;
  --theme-page-text: #212529;
  --theme-primary-button: #007bff;
  --theme-secondary-button: #6c757d;
}