body {
    font-family: sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: #f4f4f4;
    padding: 20px;
}
h1 { margin-bottom: 10px; }

/* Responsive Board Container */
#myBoard {
    width: 90%;
    max-width: 500px;
    margin: 20px auto;
}

/* Input Controls */
.input-container {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    width: 90%;
    max-width: 500px;
}

#moveInput {
    flex-grow: 1;
    padding: 12px;
    font-size: 18px;
    border: 2px solid #ccc;
    border-radius: 4px;
}

#submitBtn {
    padding: 10px 20px;
    font-size: 16px;
    background-color: #4CAF50;
    color: white;
    border: none;
    cursor: pointer;
    border-radius: 4px;
}

/* Status & History */
#status { font-weight: bold; margin-bottom: 10px; color: #333; }
#pgn-output { 
    background: #fff; 
    padding: 15px; 
    border: 1px solid #ddd; 
    width: 90%; 
    max-width: 500px; 
    min-height: 50px;
    font-family: monospace;
    font-size: 14px;
}