body {
    margin: 0;
    font-family: "Segoe UI", sans-serif;
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    color: white;
    text-align: center;
}

#header {
    padding: 20px;
}

#logo {
    width: 120px;
    margin-bottom: 10px;
}

#quiz-box {
    background: rgba(255,255,255,0.1);
    padding: 25px;
    width: 70%;
    margin: auto;
    border-radius: 15px;
    backdrop-filter: blur(6px);
}

#question {
    font-size: 1.6em;
    margin-bottom: 20px;
}

.answer {
    display: block;
    width: 80%;
    margin: 10px auto;
    padding: 12px;
    font-size: 1.2em;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    background: rgba(255,255,255,0.2);
    color: white;
    transition: 0.2s;
}

.answer:hover {
    background: rgba(255,255,255,0.35);
}

.correct {
    background: #4CAF50 !important;
}

.wrong {
    background: #E53935 !important;
}

#next {
    margin-top: 20px;
    padding: 12px 25px;
    font-size: 1.2em;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    background: #ffca28;
    color: #333;
    transition: 0.2s;
}

#next:hover {
    background: #ffd95b;
}