body {
    background-color: #f8f9fa;
    padding-top: 40px;
}

.container {
    max-width: 600px;
    background-color: #ffffff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.header {
    text-align: center;
    margin-bottom: 30px;
    border-bottom: 1px solid #dee2e6;
    padding-bottom: 20px;
}

.header h2 {
    color: #343a40;
}

.form-group label {
    font-weight: bold;
}

.btn-primary {
    margin-top: 20px;
}

/* Fix for key generation button alignment */
.form-inline .key-gen-button {
    align-self: center;
}