:root{
  --bg1: 29, 78, 216; /* indigo-600 */
  --bg2: 59, 130, 246; /* blue-500 */
}
body.bg-gradient{
  background: linear-gradient(135deg, rgba(var(--bg1), .25), rgba(var(--bg2), .25));
  min-height: 100vh;
}
.navbar.glassy{
  background: rgba(0,0,0,.35);
  backdrop-filter: blur(6px);
}
.card{
  background: rgba(255,255,255,.9);
}