.ppg-container {
    max-width: 700px;
    margin: 40px auto;
    padding: 30px;
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    font-family: Arial, sans-serif;
}

.ppg-container h2 {
    text-align: center;
    margin-bottom: 20px;
}

#ppg-form input, 
#ppg-form select {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
}

#ppg-form button {
    width: 100%;
    padding: 12px;
    background: #28a745;
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
}

#ppg-form button:hover {
    background: #218838;
}

#ppg-output {
    width: 100%;
    height: 350px;
    margin-top: 15px;
    padding: 15px;
    border-radius: 6px;
    border: 1px solid #ddd;
}

.popup {
    display:none;
    position:fixed;
    top:0;
    left:0;
    width:100%;
    height:100%;
    background:rgba(0,0,0,0.6);
    justify-content:center;
    align-items:center;
}

.popup-content {
    background:#fff;
    padding:30px;
    border-radius:10px;
    width:400px;
    text-align:center;
}

.popup-content input {
    width:100%;
    padding:12px;
    margin-bottom:15px;
}