src/ccDarkTheme/layout/_main.scss

.main {
  color: var(--TWPT-primary-text)!important;
}

// Border color for the page title bar (most pages use .title-bar although
// some use .page-header).
main .title-bar, main .page-header {
  border-bottom-color: var(--TWPT-subtle-border)!important;
}

main .title-bar .title, main .page-header h1, main .header h1 {
  color: var(--TWPT-primary-text)!important;
}

.card {
  background-color: var(--TWPT-secondary-background)!important;
  color: var(--TWPT-primary-text)!important;
  border-color: var(--TWPT-card-border)!important;
}

.card .card-title, .card, .card-section-title {
  color: var(--TWPT-primary-text)!important;
}

.card .card-section-hint, .card .card-section-checkbox-hint {
  color: var(--TWPT-secondary-text)!important;
}