body { min-height:100vh; }
.login-bg { background: linear-gradient(135deg,#e9f1ff,#f8f9fa); }
.card { border-radius: 16px; }
.stat-card { border-left:5px solid #0d6efd; }
.video-wrap { position:relative; padding-bottom:56.25%; height:0; overflow:hidden; border-radius:12px; background:#000; }
.video-wrap iframe { position:absolute; inset:0; width:100%; height:100%; border:0; }
.certificate { background:#fff; border:12px double #0d6efd; padding:55px; min-height:600px; text-align:center; }
@media print {
  nav, .no-print, .btn { display:none!important; }
  body { background:#fff!important; }
  .certificate { border:12px double #000; }
}