#quiz-result-overlay {
    position: fixed; top:0; left:0; width:100%; height:100%; 
    background: rgba(0,0,0,0.85); display: none; align-items: center; justify-content: center; z-index: 10000;
}
.result-card {
    background: white; padding: 40px; border-radius: 20px; text-align: center; 
    max-width: 400px; width: 90%; box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}
.result-score { font-size: 64px; font-weight: 800; margin: 10px 0; }
.pass { color: #2ecc71; }
.fail { color: #e74c3c; }
.btn-next { 
    display: inline-block; padding: 12px 30px; background: #3182ce; color: white; 
    text-decoration: none; border-radius: 8px; margin-top: 20px; font-weight: 600;
}

#quiz-result-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.85);
    display: none; /* Controlled by JS */
    align-items: center; justify-content: center;
    z-index: 9999;
}

.result-card {
    background: white; padding: 40px; border-radius: 20px;
    text-align: center; max-width: 400px; width: 90%;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.result-score { font-size: 72px; font-weight: 800; margin: 15px 0; }
.result-score.pass { color: #2ecc71; }
.result-score.fail { color: #e74c3c; }

.btn-next {
    background: #3182ce; color: white; border: none;
    padding: 12px 25px; border-radius: 8px; cursor: pointer;
    font-size: 1rem; font-weight: 600; margin-top: 15px;
}