* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #333;
    padding: 20px;
    min-height: 100vh;
}

h1, h2, h3 {
    color: white;
    text-align: center;
    margin-bottom: 20px;
}

button {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    margin: 10px;
    transition: background 0.3s;
}

button:hover {
    background: #45a049;
}

button:disabled {
    background: #cccccc;
    cursor: not-allowed;
}

#participants, #scoreboard {
    background: rgba(255, 255, 255, 0.1);
    padding: 15px;
    border-radius: 10px;
    margin: 20px 0;
    color: white;
}

#scoreboard li {
    margin: 5px 0;
    padding: 8px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 6px;
}

#question, #result, #end {
    background: white;
    padding: 25px;
    border-radius: 12px;
    margin: 20px auto;
    max-width: 600px;
    text-align: center;
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

#question h2, #result p, #end h2 {
    margin-bottom: 20px;
    color: #333;
}

#options {
    list-style: none;
    margin: 20px auto;
    max-width: 500px;
}

#options li {
    margin: 10px 0;
}

#options button {
    width: 100%;
    text-align: left;
    padding: 15px;
    font-size: 18px;
    background: #f0f0f0;
    border: 1px solid #ddd;
    border-radius: 8px;
    transition: background 0.3s;
}

#options button:hover {
    background: #e0e0e0;
}

#timer {
    font-size: 20px;
    font-weight: bold;
    color: #e74c3c;
    margin: 15px 0;
}

#end {
    background: #2ecc71;
    color: white;
    padding: 40px;
}

#ip {
    font-weight: bold;
    color: #ffeb3b;
}

/* Responsive design */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    #question, #result, #end {
        margin: 15px auto;
        padding: 20px;
    }
    #options button {
        font-size: 16px;
        padding: 12px;
    }
    h1 {
        font-size: 24px;
    }
    button {
        padding: 10px 16px;
        font-size: 14px;
    }
}

/* Animasi halus */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

#question, #result, #end {
    animation: fadeIn 0.5s ease-out;
}