*{box-sizing:border-box;margin:0;padding:0;font-family:Arial,sans-serif}body{display:flex;flex-direction:column;justify-content:space-evenly;align-items:center;min-height:100vh;color:#fff}.video-container{position:absolute;top:0;left:0;width:100vw;height:100vh;object-fit:cover;z-index:-2}.header{font-size:20px;text-align:center}.header h2{font-size:15px}.title-image{position:absolute;z-index:0}#quiz-container{width:100%;max-width:95vw;padding:20px;box-shadow:0 4px 10px #0003;border-radius:8px;text-align:center;transition:transform .3s ease;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px)}#start-screen{padding:20px}#start-screen h1{font-size:2.5em;margin-bottom:10px;color:#00c9bb}#start-screen p{margin-bottom:20px;font-size:1.2em;color:#fff}#name-form input{background-color:#fefedf;border:none;height:25px;font-size:18px;border-radius:5px;padding-left:5px}button{margin:5px;padding:10px 20px;font-size:1em;cursor:pointer;border:none;border-radius:5px;background-color:#fefedf;color:#000;transition:background-color .3s ease,transform .2s ease}button:hover{background-color:#ffc0ff;transform:scale(1.05)}#instructions-screen{background:#2f2f2f;border:2px solid #ccc;padding:20px;border-radius:8px;position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);width:90vw;height:90vh;overflow-y:auto;z-index:10;line-height:1.6}#instructions-screen h2,h3{margin-top:20px;margin-bottom:10px}#instructions-screen ol,ul{margin-left:20px;margin-bottom:15px}#instructions-screen li{margin-bottom:15px}#close-instructions-btn{margin-top:20px}#quiz-screen{display:flex;flex-direction:column;gap:15px}#lifelines{display:flex;gap:10px;justify-content:center;margin-bottom:15px}#lifelines button{background-color:#00c9bb}#lifelines button:hover{background-color:#fefedf}#lifelines button:disabled{background-color:#ccc;cursor:not-allowed;color:#fff}#question-section{text-align:center}#question-text{font-size:1.5em;margin-bottom:15px}#answer-options{display:flex;flex-direction:column;align-content:center;gap:10px;margin-top:10px}.answer-btn{padding:12px;font-size:1em;border:2px solid #8e539d;border-radius:5px;background-color:#ffc0ff;cursor:pointer;transition:background-color .3s ease,color .3s ease}.answer-btn:hover{background-color:#fefedf}.answer-btn.correct{background-color:#28a745;color:#fff;border-color:#28a745}.answer-btn.incorrect{background-color:#dc3545;color:#fff;border-color:#dc3545;animation-name:vibrate;animation-duration:.1s;animation-timing-function:linear;animation-iteration-count:4}.highlight{background-color:gold;color:#fff;border-color:gold}@keyframes vibrate{0%{transform:translate(0)}25%{transform:translate(-1px,1px)}50%{transform:translate(1px,-1px)}75%{transform:translate(-1px,1px)}to{transform:translate(1px,-1px)}}#hint-display{margin:10px}#next-btn{padding:10px 15px;margin-top:15px;display:inline-block;font-size:1em;background-color:#8e539d;border:none;color:#fff;border-radius:5px;cursor:pointer;transition:background-color .3s ease}#next-btn:hover{background-color:#fefedf;color:#000}#progress{display:flex;justify-content:space-between;font-size:1.1em;color:#fff;margin-top:15px}#end-screen{text-align:center}#end-screen h2{font-size:2em;color:#00c9bb;margin-bottom:15px}#end-screen p{font-size:1.2em;margin-bottom:20px;color:#fff}#restart-btn{background-color:#ffc0ff}#restart-btn:hover,#result-btn:hover{background-color:#00c9bb}#popupDialog{display:none;width:80vw;aspect-ratio:640 / 426;position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background-position:center;background-image:url(/assets/certificate-CXGgi3_r.png);background-size:cover;background-color:#fff;padding:15px;border:2px solid white;border-radius:5px;box-shadow:5px 5px 10px #d3d3d3;z-index:1001;max-width:90vw;max-height:80vh}#popupDialog p{margin-top:10%;font-family:cursive;font-size:15px;padding:10px;color:#000}#overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;z-index:1000}#popupDialog button{background-color:#fff;font-size:20px;color:#65676b;cursor:pointer;border:1px solid #65676b;border-radius:50%}#leaderboard{display:none;width:200px;padding:20px;background-color:#fff;box-shadow:0 4px 10px #0003;border-radius:8px;text-align:center;transition:transform .3s ease;margin-left:10px;color:#000}.leaderboard-button{display:none;background-color:#00c9bb;font-size:14px;padding:2px 10px;margin-left:35px;border:none;border-radius:5px;z-index:1001}.leaderboard-button:hover{background-color:#fefedf}@media (min-width: 480px){.header{font-size:30px}#quiz-container{width:100%;max-width:600px;padding:20px;box-shadow:0 4px 10px #0003;border-radius:8px;text-align:center;transition:transform .3s ease;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px)}#answer-options{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:10px}#popupDialog p{font-size:30px}}