body{font-family:'Segoe UI',sans-serif;background:#f5f6fa;}
.navbar{background:#111;}
.card{border-radius:14px;box-shadow:0 6px 20px rgba(0,0,0,.08);}
.btn-primary{background:#0d6efd;border:none;}
.admin-box{max-width:420px;margin:auto;margin-top:80px;}