body {
    font-family: Arial, sans-serif;
    background: linear-gradient(to right, #f8f9fa, #e9ecef);
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: auto;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 20px;
}

h1, h2, h3 {
    color: #343a40;
}

button {
    margin-top: 10px;
}

.btn-custom {
    background-color: #007bff;
    color: white;
}

.btn-custom:hover {
    background-color: #0056b3;
}

.question {
    margin-bottom: 20px;
}

.option {
    display: block;
    margin: 5px 0;
}

.summary {
    margin-top: 20px;
    padding: 10px;
    border: 1px solid #dee2e6;
    border-radius: 5px;
    background-color: #e9ecef;
}

.card {
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    margin: 20px;
    padding: 20px;
}

.card-body {
    padding: 20px;
}

#instructions img {
    width: 100px;
}

#navigation-buttons .btn {
    margin: 0 10px;
}

#navigation-buttons {
    margin-top: 20px;
}

.chart-container {
    position: relative;
    height: 40vh;
    width: 40vw;
    margin: 0 auto;
}

#summary .card-body {
    margin: 20px;
}

#question-indicator {
    font-size: 1.2em;
    font-weight: bold;
}

.category-header {
    margin-top: 30px;
    margin-bottom: 10px;
}