body { background:#f4f6f9; }
.card { border:0; border-radius:14px; }
.card-metric { color:white; overflow:hidden; }
.bg-gradient-primary { background:linear-gradient(135deg,#007bff,#0056b3); }
.bg-gradient-success { background:linear-gradient(135deg,#28a745,#168039); }
.bg-gradient-danger { background:linear-gradient(135deg,#dc3545,#9f1e2c); }
.bg-gradient-warning { background:linear-gradient(135deg,#ffc107,#d39e00); }
.table td, .table th { vertical-align: middle; }
.form-control, .btn { border-radius:10px; }
.page-title { font-weight:700; color:#263238; }