body.dark-mode {
  --bg-color: #0b1120;
  --surface-color: #1e293b;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --accent-color: #3b82f6; 
  --border-color: #334155;

  
  --shadow-sm: 0 1px 2px 0 rgba(0,0,0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0, 0.4), inset 0 1px 0 rgba(255,255,255,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0, 0.5), inset 0 1px 0 rgba(255,255,255,0.05);
  --shadow-hover: 0 20px 25px -5px rgba(0,0,0, 0.6), inset 0 1px 0 rgba(255,255,255,0.05);
  --shadow-inset: inset 0 2px 4px 0 rgba(0,0,0,0.5);
}


body.dark-mode .brand-logo { filter: brightness(0) invert(1); }
body.dark-mode .modal-overlay { background-color: rgba(0, 0, 0, 0.8); }
body.dark-mode .daily-targets { background-color: #0b1120; }
body.dark-mode .progress-bar-bg { background-color: #334155; }
body.dark-mode select, body.dark-mode input { 
  background-color: #0f172a; 
  color: #f8fafc; 
  border-color: #334155; 
}