* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Comic Sans MS', cursive, sans-serif;
    background-color: #f0f9ff;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    color: #333;
}

#game-container {
    width: 100%;
    max-width: 900px;
    background-color: #ffffff;
    border-radius: 20px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    position: relative;
    min-height: 600px;
}

.screen {
    display: none;
    width: 100%;
    height: 100%;
    padding: 30px;
    text-align: center;
    position: relative;
}

.screen.active {
    display: block;
}

.butterfly-container {
    position: absolute;
    top: 20px;
    right: 30px;
    width: 100px;
    height: 100px;
}

.butterfly {
    width: 100%;
    height: auto;
}

h1, h2 {
    color: #3a5cbe;
    margin-bottom: 20px;
}

.question-container {
    margin: 40px 0;
}

.options-container {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.option {
    width: 300px;
    height: 300px;
    border-radius: 15px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 4px solid #e0e0e0;
}

.option:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.option img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.btn {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 12px 30px;
    font-size: 18px;
    border-radius: 30px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
    font-family: inherit;
    margin-top: 20px;
}

.btn:hover {
    background-color: #3e8e41;
    transform: scale(1.05);
}

#feedback-message {
    font-size: 24px;
    margin: 40px 0;
}

.correct {
    border: 4px solid #4CAF50;
}

.incorrect {
    border: 4px solid #f44336;
}

.shake {
    animation: shake 0.5s;
}

.completion-message {
    margin-top: 100px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .options-container {
        flex-direction: column;
        align-items: center;
    }
    
    .option {
        width: 250px;
        height: 250px;
    }
}