body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f0f2f5;
    color: #333;
    display: flex;
    justify-content: center;
}
.container {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 600px;
}
h1, h2, h3 { color: #1d1d1f; }
h1 { text-align: center; margin-bottom: 25px; }
.section { margin-bottom: 20px; padding-bottom: 20px; border-bottom: 1px solid #e5e5e5;}
.profile-section { padding: 15px; background-color: #f9f9f9; border-radius: 6px; margin-top:15px; }
.profile-section:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 15px;}
label { display: block; margin-bottom: 8px; font-weight: 500; }
input[type="text"] {
    width: calc(100% - 22px);
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 16px;
}
button {
    background-color: #007aff;
    color: white;
    border: none;
    padding: 10px 18px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.2s;
    margin-top: 10px;
}
button:hover { background-color: #005bb5; }
button:disabled { background-color: #c7c7cc; cursor: not-allowed;}
.loader {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #007aff;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
    display: inline-block;
    margin-left: 10px;
    vertical-align: middle;
}
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }
.message-area {
    margin-top: 15px;
    padding: 12px;
    border-radius: 4px;
    font-weight: 500;
}
.message-success { background-color: #d4edda; color: #155724; border: 1px solid #c3e6cb;}
.message-error { background-color: #f8d7da; color: #721c24; border: 1px solid #f5c6cb;}
code { background-color: #eef; padding: 2px 4px; border-radius: 3px; }
/* ... (all your existing CSS) ... */

.certificate-info {
    margin-top: 15px;
    padding-top: 10px;
    border-top: 1px dashed #eee; /* Optional separator */
    font-size: 0.9em;
}

.certificate-info p {
    margin: 5px 0;
}

.certificate-info code {
    background-color: #f0f0f0;
    padding: 2px 5px;
    border-radius: 3px;
    font-family: "Courier New", Courier, monospace;
}