:root {
  /* Backgrounds */
  --bg-base:           #0c0c0c;
  --bg-surface:        #111111;
  --bg-elevated:       #1a1a1a;

  /* Accent — crimson red */
  --accent:            #e53935;
  --accent-bright:     #ef5350;
  --accent-dim:        rgba(229, 57, 53, 0.10);

  /* Text */
  --text-primary:      #f0f0f0;
  --text-secondary:    #888888;
  --text-muted:        #444444;

  /* Borders */
  --border:            #222222;
  --border-subtle:     #181818;

  /* Layout */
  --sidebar-width:     260px;
  --toc-width:         220px;
  --header-height:     70px;
}