body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
}

.container {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    text-align: center;
}

.board {
    margin: 20px auto;
    border: 4px solid #333;
    width: max-content;
}

.case {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-blanche {
    background-color: #f0d9b5;
}

.case-noire {
    background-color: #b58863;
}

.pion {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: inset 0 2px 4px rgba(255,255,255,0.4), 0 2px 4px rgba(0,0,0,0.3);
}

.pion-blanc {
    background-color: #f0f0f0;
    border: 2px solid #ccc;
}

.pion-noir {
    background-color: #333;
    border: 2px solid #111;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    margin: 5px;
    color: white;
    background-color: #007bff;
    text-decoration: none;
    border-radius: 4px;
    border: none;
    cursor: pointer;
}

.btn-danger {
    background-color: #dc3545;
}