fieldset {
    border: 2px solid #e9ecef;
    border-radius: 6px;
    padding: 15px;
    margin-bottom: 20px;
    background: #f8f9fa;
}
legend {
    color: #007acc;
    font-weight: bold;
    padding: 0 10px;
}
textarea {
    height: 200px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 10px;
    resize: vertical;
}
select {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    margin-left: 10px;
}
label {
    font-weight: 500;
    color: #495057;
}
#output {
    background: #1e1e1e;
    color: #d4d4d4;
    padding: 15px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    white-space: pre-wrap;
    min-height: 100px;
    border: 1px solid #ddd;
}
.settings-row {
    display: flex;
    gap: 20px;
    margin: 10px 0;
    align-items: center;
}
.token-usage {
    margin-top: 10px;
    font-size: 14px;
    color: #6c757d;
}
.error {
    color: #dc3545;
    background: #f8d7da;
    padding: 10px;
    border-radius: 4px;
    margin: 10px 0;
}