:root[data-theme='tstp_dark'] {
  --tstp-bg: #0c0c0e;
  --tstp-surface: #16161a;
  --tstp-text: #e8e8ed;
  --tstp-text_muted: #888888;
  --tstp-accent: #ff4500;
  --tstp-border: #2a2a30;
  --tstp-focus_ring: #ff4500;
  --tstp-shadow: #00000080;
}