body {
    background-color: #f8f9fa;
}

.card {
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.navbar {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.footer {
    box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.1);
}

.table td, .table th {
    vertical-align: middle;
}

.qr-code {
    width: 150px;
    height: 150px;
    margin: 0 auto;
    display: block;
}

.status-badge {
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}