* {
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    background-color: #282c34;
    color: #61dafb;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

#game-container {
    text-align: center;
    background: #20232a;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

#card-grid {
    display: grid;
    grid-template-columns: repeat(4, 100px);
    gap: 10px;
    justify-content: center;
    margin: 20px 0;
}

.card {
    width: 100px;
    height: 100px;
    background-color: #61dafb;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 5px;
    cursor: pointer;
    font-size: 24px;
    color: #282c34;
    transition: transform 0.3s;
}

.card.flipped {
    transform: rotateY(180deg);
    background-color: #3b3b3b;
    color: white;
}

button {
    padding: 10px 15px;
    border: none;
    border-radius: 5px;
    background-color: #61dafb;
    color: #282c34;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #21a1f1;
}

#status {
    margin-top: 10px;
    font-size: 18px;
    color: white;
}