/* Requirement 4: Sky blue background */
.fill-up-quiz-container {
    background-color: #f0f8ff; /* sky blue */
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #b0c4de;
}

#quiz-timer {
    text-align: right;
    font-size: 1.2em;
    margin-bottom: 20px;
    color: #333;
}

.quiz-question {
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid #ddd;
}

.question-text {
    font-size: 1.1em;
    font-weight: bold;
    margin-bottom: 15px;
}

.options-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.option-item {
    background-color: #fff;
    border: 1px solid #ccc;
    padding: 10px 15px;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
    flex-grow: 1;
    text-align: center;
}

.option-item:hover {
    background-color: #e9e9e9;
}

/* Requirement 2: Color feedback */
.option-item.correct {
    background-color: #28a745; /* green */
    color: white;
    border-color: #28a745;
}

.option-item.incorrect {
    background-color: #dc3545; /* red */
    color: white;
    border-color: #dc3545;
}

.option-item.disabled {
    pointer-events: none;
    opacity: 0.7;
}

/* Requirement 3: Explanation section */
.explanation {
    display: none;
    margin-top: 15px;
    padding: 10px;
    background-color: #eef2f7;
    border-left: 4px solid #1e90ff;
    font-style: italic;
}

#submit-quiz, #download-pdf {
    display: block;
    width: 100%;
    padding: 15px;
    font-size: 1.2em;
    background-color: #0073aa;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 20px;
}

#submit-quiz:hover, #download-pdf:hover {
    background-color: #005a87;
}

#quiz-results {
    display: none;
    text-align: center;
}

#quiz-results h2 {
    font-size: 2em;
    color: #333;
}

.social-share a {
    display: inline-block;
    margin: 10px;
    padding: 10px 20px;
    color: white;
    text-decoration: none;
    border-radius: 5px;
}
#share-whatsapp { background-color: #25D366; }
#share-facebook { background-color: #1877F2; }
#share-twitter { background-color: #1DA1F2; }