/* General Styles */
body {
    font-family: 'Poppins', sans-serif;
    text-align: center;
    background-color: #f9f9f9;
}

header {
    background: #ff4500;
    color: white;
    padding: 15px;
}

nav ul {
    list-style: none;
    padding: 0;
}

nav ul li {
    display: inline;
    margin: 0 15px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}

.game-container {
    margin-top: 20px;
}

.game-board {
    display: grid;
    grid-template-columns: repeat(4, 100px);
    gap: 10px;
    justify-content: center;
    margin: 20px auto;
}

.card {
    width: 100px;
    height: 100px;
    background-color: #ddd;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.3s;
}

.card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 8px;
}

.flipped {
    background-color: white;
}

.matched {
    opacity: 0.6;
    pointer-events: none;
}

#reset {
    padding: 10px 20px;
    font-size: 16px;
    background-color: #ff4500;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

#reset:hover {
    background-color: #e03e00;
}