html, body{
    height: 100%;
    margin: 0;
    padding: 0;
}
body{
    background-image: url('attackback.jpg');
    background-size: cover;
    background-position: center;
    background-repeat:no-repeat;
    display: flex;
    justify-content: center;
    align-items: center;

}

.quiz-container{
    transform: scale(0.8);
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    max-width: 600px;
    width:90%;
    text-align: center;
}

.quiz-header{
    margin-bottom: 30px;
}

.quiz-title{
    font-size: 2.5rem;
    color:#333;
    margin-bottom: 10px;
}

.question-counter{
    font-size: 1.2rem;
    color:#666;
    margin-bottom: 20px;
}

.progress-bar{
    width: 100%;
    height: 8px;
    background: #e0e0e0;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 30px;
}


.progress-fill {
    height: 100%;
    background: linear-gradient(90deg,#667eea,#764ba2);
    transition: width 0.3s ease;
}

.question {
    font-size: 1.5rem;
    color:#333;
    margin-bottom: 30px;
    line-height: 1.6;
}

.answers {
    display: grid;
    gap:15px;
    margin-bottom: 30px;
}

.answer-btn {
    padding: 15px 20px;
    border:2px solid #e0e0e0;
    border-radius: 10px;
    background: white;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
}

.answer-btn:hover {
    border-color: #667eea;
    background: #f8f9ff;
    transform: translateY(-2px);
}

.answer-btn.selected{
    border-color: #667eea;
    background: #667eea;
    color: white
}

.next-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 15px 40px;
    border-radius: 25px;
    font-size:1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    opacity: 0.5;
    pointer-events:none;
}

.score-display {
    font-size:1.2rem;
    color: #333;
    margin-top:10px;
    font-weight:bold;

}
.next-btn.active{
    opacity: 1 ;
    pointer-events:auto;
}

.next-btn:hover.active{
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(69, 108, 165, 0.3);
}

@keyframes victoryReveal {
    0% {
        opacity:0;
        transform:scale(0.5) rotateY(180deg);
    }

    50% {
        opacity:1;
        transform:scale(1);
    }

    100% {
        opacity:1;
        transform:scale(1);
    }
}


@keyframes fadeInUp {
    0% {
        opacity:0;
        transform:translateY(50px);
    }

    100% {
        opacity:1;
        transform:translateY(0);
    }
}

.victory-glow {
    animation: victoryGlow 2s ease-in-out infinite alternate;
}

@keyframes victory-glow {
    0% {
        text-shadow: 0 0 20px #0ff000, 0 0 40px #00ff00, 0 0 60px #00ff00, 2px 2px 4px rgba(0,0,0,0.8);

    }

    100% {
        text-shadow: 0 0 30px #00ff00, 0 0 60px #00ff00, 0 0 90px #00ff00, 2px 2px 4px rgba(0,0,0,0.8);
    }
}