body {
    background-color: #f8f9fa;
    padding-top: 30px;
    padding-bottom: 50px;
}

.survey-container {
    max-width: 800px;
    margin: auto;
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.section-header {
    background-color: #e9ecef;
    padding: 10px 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    font-weight: bold;
    color: #495057;
}

.form-check {
    margin-bottom: 10px;
}

.btn-primary {
    background-color: #0d6efd;
    border: none;
    padding: 12px 30px;
}