/* Make the primary (top-bar) color pure black */
:root,
[data-md-color-scheme="default"] {
  --md-primary-fg-color:   #000000;  /* navbar background */
  --md-primary-bg-color:   #000000;  /* fallback */
  --md-primary-fg-color--light: #000000; /* mobile collapsed bar */
}

/* Optional: keep links/icons readable */
[data-md-color-scheme="default"] .md-header__title,
[data-md-color-scheme="default"] .md-header__button {
  color: #ffffff;
}