body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
}

#quiz-container {
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    width: 80%;
    max-width: 600px;
    text-align: center;
}

button {
    padding: 10px 20px;
    margin: 5px;
    border: none;
    border-radius: 5px;
    background-color: #007BFF;
    color: white;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}

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

.answer-btn {
    display: block;
    width: 100%;
    margin: 10px 0;
}

.correct {
    background-color: #28a745;
}

.wrong {
    background-color: #dc3545;
}

#feedback {
    margin-top: 10px;
    font-weight: bold;
}

#feedback.correct {
    color: #28a745;
}

#feedback.wrong {
    color: #dc3545;
}

#coins {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 18px;
}

#power-ups {
    margin: 10px 0;
}

#power-ups button {
    background-color: #17a2b8;
}

#power-ups button:hover {
    background-color: #138496;
}

#user-info, #streak-info {
    font-size: 14px;
    margin: 5px 0;
}