body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
}

.navbar-brand {
    font-weight: bold;
}

.card {
    border: none;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
}

.card-header {
    border-bottom: 1px solid #e3e6f0;
    background-color: #f8f9fc;
}

.table th {
    border-top: none;
    font-weight: 600;
    color: #6e707e;
}

.btn {
    border-radius: 5px;
}

.form-control, .form-select {
    border-radius: 5px;
    border: 1px solid #d1d3e2;
}

.form-control:focus, .form-select:focus {
    border-color: #bac8f3;
    box-shadow: 0 0 0 0.2rem rgba(78, 115, 223, 0.25);
}

.alert {
    border-radius: 5px;
}

footer {
    margin-top: auto;
}