body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 20px;
    background-color: #f0f2f5;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.progress {
    margin-bottom: 20px;
    padding: 10px;
    background-color: #f8f9fa;
    border-radius: 4px;
}

.question h2 {
    margin-bottom: 20px;
}

.question-text {
    font-size: 1em;
    line-height: 1.4;
    margin-bottom: 20px;
    font-weight: bold;
    white-space: pre-line;
}

.question-text br {
    display: block;
    margin: 0.5em 0;
    content: "";
}

.answers {
    margin-bottom: 20px;
}

.answer {
    margin-bottom: 10px;
    padding: 10px;
    border: 1px solid #dee2e6;
    border-radius: 4px;
    transition: background-color 0.2s ease;
    cursor: pointer;
}

.answer:hover {
    background-color: #f8f9fa;
    border-color: #007bff;
}

.answer label {
    display: block;
    width: 100%;
    cursor: pointer;
}

.answer-label {
    font-weight: bold;
    margin-right: 10px;
}

.input-area {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin: 20px 0;
}

input[type="text"] {
    padding: 8px;
    border: 1px solid #dee2e6;
    border-radius: 4px;
}

button, .button {
    padding: 8px 16px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
}

button:hover, .button:hover {
    background-color: #0056b3;
}

.form-group {
    margin-bottom: 15px;
}

.feedback {
    margin-bottom: 20px;
}

.alert {
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 4px;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-info {
    background-color: #cce5ff;
    color: #004085;
    border: 1px solid #b8daff;
}

.navigation-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #dee2e6;
}

.nav-button {
    padding: 8px 16px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-button:hover:not(.disabled) {
    background-color: #0056b3;
}

.nav-button.disabled {
    background-color: #6c757d;
    cursor: not-allowed;
    opacity: 0.65;
}

.nav-button.finish {
    background-color: #28a745;
}

.nav-button.finish:hover {
    background-color: #218838;
}

.question-number {
    font-size: 1.1em;
    color: #6c757d;
}

.selected {
    background-color: #e3f2fd;
    border-color: #007bff;
}

.selected:hover {
    background-color: #e3f2fd !important;
}

.incorrect {
    background-color: #ffe6e6;  /* Light red background */
    border-color: #dc3545;      /* Red border */
    animation: shake 0.5s;       /* Add a shake animation */
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.submit-button {
    padding: 8px 24px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.submit-button:hover {
    background-color: #0056b3;
}