.ppp-settings-container {
    display: flex;
    gap: 20px;
    margin-top: 20px;
}

.ppp-main-settings {
    flex: 0 0 600px;
    background: #fff;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.ppp-sidebar {
    flex: 0 0 300px;
}

.ppp-upgrade-notice {
    background: #fff;
    padding: 20px;
    border-radius: 5px;
    border-left: 4px solid #2271b1;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.ppp-upgrade-notice h3 {
    margin-top: 0;
    color: #2271b1;
    font-size: 1.3em;
}

.ppp-settings-section {
    margin-bottom: 30px;
}

.ppp-settings-section h2 {
    padding: 10px 0;
    border-bottom: 2px solid #2271b1;
    margin-bottom: 20px;
}

.form-table th {
    width: 250px;
    padding: 15px 10px;
}

.premium-feature-notice {
    background: #f0f6fc;
    color: #2271b1;
    padding: 2px 8px;
    border-radius: 3px;
    font-size: 0.9em;
    margin-left: 10px;
}

.ppp-upgrade-features {
    margin: 15px 0;
}

.ppp-upgrade-features li {
    margin-bottom: 8px;
    padding-left: 20px;
    position: relative;
}

.ppp-upgrade-features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #2271b1;
}

.button.button-upgrade {
    background: #2271b1;
    color: #fff;
    padding: 5px 20px;
    height: auto;
    display: inline-block;
    text-decoration: none;
    margin-top: 10px;
}

.button.button-upgrade:hover {
    background: #135e96;
    color: #fff;
}