body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background-color: #ffffff;
}

main {
    flex: 1;
}

.card {
    background-color: #fff;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    border-radius: 15px;
}

.card-title {
    color: #007bff;
}

.form-label {
    font-weight: bold;
}

.form-control {
    border-radius: 5px;
}

.table {
    margin-top: 20px;
}

.btn-primary {
    background-color: #007bff;
    border-color: #007bff;
}

.btn-primary:hover {
    background-color: #0056b3;
    border-color: #0056b3;
}

.btn-secondary {
    background-color: #6c757d;
    border-color: #6c757d;
}

.btn-secondary:hover {
    background-color: #5a6268;
    border-color: #545b62;
}

.btn-danger {
    background-color: #dc3545;
    border-color: #dc3545;
}

.btn-danger:hover {
    background-color: #c82333;
    border-color: #bd2130;
}

.footer {
    margin-top: auto;
}