#tt-smartphone-app {
    font-family: Arial, sans-serif;
    padding: 15px;
}

.tt-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.tt-grid button {
    padding: 14px;
    font-size: 15px;
    border: none;
    border-radius: 6px;
    background: #2563eb;
    color: #fff;
    cursor: pointer;
}

#tt-output {
    margin-top: 20px;
    padding: 10px;
    background: #f1f5f9;
    border-radius: 6px;
}

#tt-report {
    margin-top: 20px;
}

@media (min-width: 768px) {
    .tt-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}