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

#game-container {
    text-align: center;
    background-color: white;
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    max-width: 800px;
    width: 100%;
}

h1 {
    margin-top: 0;
    color: #333;
}

#instructions {
    margin-bottom: 20px;
    font-style: italic;
    color: #666;
}

#game-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 14px;
}

#game-area {
    display: flex;
    flex-direction: column;
    align-items: center;
}

#cards-area {
    height: 150px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 20px;
}

.card {
    width: 100px;
    height: 150px;
    background-color: white;
    border: 1px solid #000;
    border-radius: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 60px;
    cursor: move;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

#boxes-area {
    display: flex;
    justify-content: center;
}

.box {
    width: 120px;
    height: 180px;
    border: 2px solid #000;
    border-radius: 10px;
    margin: 0 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 40px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

#stats {
    margin-bottom: 20px;
    font-size: 18px;
    font-weight: bold;
}

#pass-count {
    color: blue;
    margin-right: 20px;
}

#fail-count {
    color: red;
}

#controls {
    margin-top: 20px;
}

button {
    font-size: 16px;
    padding: 10px 20px;
    margin: 0 10px;
    cursor: pointer;
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}