.dt-chart-box {
    margin: 0.6rem auto;
    padding: 0.6rem;
    border: 2px dashed #cbd5e1;
    border-radius: 16px;
    background: #f8fafc;
    display: flex;
    justify-content: center;
    width: min(340px, 92%);
}

.dt-chart-box svg {
    width: 100%;
    height: auto;
}

.dt-prompt {
    font-size: 1.4rem;
    font-weight: 700;
    text-align: center;
    margin: 0.8rem 0 0.4rem;
}

.dt-options {
    display: flex;
    gap: 0.6rem;
    justify-content: center;
    flex-wrap: wrap;
    margin: 0.8rem 0;
}

.dt-option {
    min-width: 72px;
    font-size: 1.8rem;
    font-weight: 700;
    color: #1e293b;
    background: #ffffff;
    border: 2px solid #cbd5e1;
    border-radius: 14px;
    padding: 0.5rem 0.8rem;
    cursor: pointer;
    transition: transform 0.1s ease, border-color 0.1s ease;
}

.dt-option:hover {
    transform: scale(1.05);
    border-color: #94a3b8;
}

.dt-option:disabled {
    opacity: 0.7;
}