body {
    font-family: 'Roboto', sans-serif;
    color: #333;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

#uidDisplay, #uciDisplay {
    background-color: white;
    border: 1px solid #ddd;
    padding: 15px;
    margin-top: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

textarea {
    width: 100%;
    padding: 10px;
    margin-top: 10px;
    border-radius: 5px;
    border: 1px solid #ddd;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
    resize: vertical;
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
}

/* Button and Link Styles */
button, a.backButton {
    background-color: #0056b3;
    color: white;
    padding: 10px 15px;
    text-decoration: none;
    border: none;
    border-radius: 4px;
    transition: background-color 0.3s ease;
    cursor: pointer;
}

button:hover, a.backButton:hover {
    background-color: #003580;
}

/* Input Styles */
input[type="text"] {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border-radius: 4px;
    border: 1px solid #ddd;
    box-sizing: border-box;
}

/* Popup and Error Message Styles */
#popupMessage {
    background-color: #ff9800;
    color: white;
    padding: 15px;
    border-radius: 5px;
    position: fixed;
    top: 10px;
    left: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        width: 90%;
        margin: 10px auto;
        padding: 15px;
    }

    button, a.backButton {
        width: 100%;
    }
}


/* Content Styles for displayUID.php */
.uid-content {
    background-color: white;
    border: 1px solid #ddd;
    padding: 15px;
    margin-top: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    font-size: 16px;
}

/* Error Message Styles */
.error-message {
    color: #f44336;
    background-color: #ffebee;
    border: 1px solid #f44336;
    padding: 10px;
    margin-top: 20px;
    border-radius: 4px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}