.converter-textarea {
    height: 180px;
    font-family: monospace;
    font-size: 14px;
    resize: vertical;
    border-radius: 12px !important;
    padding: 15px;
    border: 1px solid #d1d5db;
}
.converter-textarea:focus {
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}