body {
    font-family: 'Arial', sans-serif;
    text-align: center;
    background-color: #f0f8ff;
    margin: 0;
    padding: 20px;
}

header {
    margin-bottom: 20px;
}

h1 {
    color: #2c3e50;
}

.score-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-bottom: 15px;
}

button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #2980b9;
}

#grid {
    display: flex;
    flex-wrap: wrap;
    width: 530px;
    margin: 0 auto;
    justify-content: center;
    gap: 10px;
}

#grid img {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border: 2px solid #2c3e50;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.3s;
}

#grid img:hover {
    transform: scale(1.05);
}

#win-message {
    margin-top: 30px;
    padding: 20px;
    background-color: #e8f4f8;
    border-radius: 8px;
    border: 2px solid #27ae60;
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hidden {
    display: none !important;
}

.matched {
    opacity: 0.5;
    cursor: default;
    border-color: #27ae60 !important;
}