main .panel {
    margin-bottom: 2rem;
    background: #fff;
    padding: 1rem;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

main .panel-heading {
    background: #0061f7;
    color: #fff;
    padding: 0.5rem 1rem;
    border-radius: 8px 8px 0 0;
}

main .panel-title {
    margin: 0;
    font-size: 1.5rem;
}

main .panel-body {
    padding: 1rem;
}

main h2 {
    color: #0061f7;
}

main h3 {
    color: #fff;
}

body.dark-mode main .panel {
    background: #333;
    color: #fff;
}

body.dark-mode main .panel-heading {
    background: #444;
}

body.dark-mode main .panel-body {
    color: #ddd;
}

body.dark-mode main h2, body.dark-mode main h3 {
    color: #ddd;
}