html {
    font-size: 14px;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-color: #f8f9fa;
}

main {
    flex: 1;
}

.card {
    border: none;
    border-radius: 0.75rem;
}

.card-header {
    border-radius: 0.75rem 0.75rem 0 0 !important;
}

.form-control:focus {
    border-color: #0d6efd;
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.15);
}

.alert {
    border-radius: 0.5rem;
}

.alert-success {
    background-color: #d1e7dd;
    border-color: #badbcc;
    color: #0f5132;
}

.alert-danger {
    background-color: #f8d7da;
    border-color: #f5c2c7;
    color: #842029;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: #ffecb5;
    color: #664d03;
}

@media (min-width: 768px) {
    html {
        font-size: 16px;
    }
}