.diu-wrapper {
    max-width: 520px;
    margin: 2rem auto;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.diu-dropzone {
    border: 2px dashed #cbd5e1;
    border-radius: 16px;
    background: #f8fafc;
    padding: 3rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.25s ease;
}

.diu-dropzone:hover,
.diu-dropzone.dragover {
    border-color: #3b82f6;
    background: #eff6ff;
}

.diu-dropzone-inner svg {
    color: #64748b;
    margin-bottom: 1rem;
}

.diu-dropzone p {
    margin: 0;
    color: #475569;
    font-size: 1.05rem;
    line-height: 1.5;
}

.diu-dropzone span {
    color: #3b82f6;
    text-decoration: underline;
}

.diu-status {
    margin-top: 1.25rem;
    font-size: 0.95rem;
    text-align: center;
}

.diu-status.success {
    color: #16a34a;
}

.diu-status.error {
    color: #dc2626;
}