body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background: var(--tg-theme-bg-color, #ffffff);
    color: var(--tg-theme-text-color, #000000);
}

#wrapper {
    padding: 16px;
}

header h1 {
    margin: 0;
    font-size: 20px;
}

header p {
    font-size: 14px;
    margin-top: 4px;
}

.btn {
    width: 100%;
    padding: 12px;
    margin-bottom: 10px;
    border: none;
    border-radius: 6px;
    background: #2d2d2d;
    color: #ffffff;
    cursor: pointer;
    font-size: 14px;
}

#output {
    background: var(--tg-theme-secondary-bg-color, #f1f1f1);
    padding: 10px;
    border-radius: 6px;
    margin-top: 20px;
    font-size: 13px;
    overflow-x: auto;
    max-height: 300px;
}

#closeBtn {
    width: 100%;
    margin-top: 20px;
    padding: 12px;
    background: #000000;
    border: none;
    border-radius: 6px;
    color: #ffffff;
    font-size: 14px;
    cursor: pointer;
}