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

main { flex: 1; }

.question-card { transition: box-shadow .15s; }
.question-card:hover { box-shadow: 0 4px 12px rgba(0,0,0,.08) !important; }

.likert-label {
    min-width: 64px;
    text-align: center;
    cursor: pointer;
    transition: background .15s, color .15s;
}
input[type=radio]:checked + .likert-label {
    background: var(--bs-primary);
    color: #fff;
    border-color: var(--bs-primary);
}