body { background: #f4f6f9; }
.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #007bff 0%, #0056b3 100%); }
.login-card { width: 100%; max-width: 400px; border-radius: 0.75rem; box-shadow: 0 1rem 3rem rgba(0,0,0,.25); }
.brand-link { font-size: 1.25rem; font-weight: 600; }
.table-actions form { display: inline; margin-right: 4px; }
.qr-preview img { width: 200px; height: 200px; object-fit: contain; border: 1px solid #dee2e6; border-radius: .5rem; }
.flash { color: #cb211d; }