body {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    font-family: 'Arial', sans-serif;
    margin: 0;
    background-image: url(pics/bg2.webp);
    background-size: cover;
}

#player-names {
    display: flex;
    margin: 10px;
    font-size: 18px; /* Slightly smaller font size for player names */
}

.player {
    background-color: #ffffff;
    font-size: 15px;
    padding: 5px 15px; /* Reduced padding for smaller screens */
    border-radius: 5px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    color: #333;
    text-align: center;
    margin: 0px 10px;
}

.player.active {
    transform: scale(1.3);
    background-color: #9af29a;
}

#gameboard {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    grid-template-rows: repeat(8, 1fr);
    border: 2px solid #333;
    width: 100%;
    max-width: 480px; /* Limit the width on larger screens */
}

.square {
    width: 100%;
    height: auto;
    padding-bottom: 100%; /* Makes the squares responsive and maintain aspect ratio */
    position: relative; /* To maintain the square layout */
    border: 1px solid #333;
}

.square .piece {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3.5vw; /* Responsive font size for pieces */
}

.white {
    background-color: #e4e4e4;
}

.black {
    background-color: #b58863;
}

.square {
    position: relative;
}

.highlight::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    background-color: rgb(183, 227, 72) !important;
    border-radius: 50%;
    transform: translate(-50%, -50%);
}

.piece {
    cursor: grab;
    line-height: 1;
    position: relative;
}

.piece-white {
    color: white;
    filter: drop-shadow(0px 0px 1px black);
}

.piece-black {
    color: black;
}

.selected {
    color: rgb(183, 227, 72);
}

#winner {
    margin-top: 20px;
    font-size: 20px;
    color: red;
}

/* Modal styles */
#modal, #check-modal {
    display: none; 
    position: fixed; 
    z-index: 1; 
    left: 0;
    top: 0;
    width: 100%; 
    height: 100%; 
    overflow: auto; 
    background-color: rgba(0,0,0,0.4); 
    padding-top: 60px; 
}

#modal-content, #check-modal-content {
    background-color: white;
    margin: 5% auto; 
    padding: 20px;
    border: 1px solid #888;
    width: 90%; 
    max-width: 300px; 
    text-align: center;
    border-radius: 10px;
}

#modal-content h2, #check-modal-content h2 {
    margin: 0;
    color: #333;
}

#modal-content p, #check-modal-content p {
    margin: 15px 0;
}

#restart-btn {
    margin-top: 10px;
    padding: 10px 20px;
    font-size: 16px;
    color: white;
    background-color: #4CAF50; /* Green */
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

#restart-btn:hover {
    background-color: #45a049;
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

.close:hover,
.close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

/* Check alert specific styles */
#check-modal-content {
    background-color: #ffeb3b; /* Yellow background for alert */
    color: #000;
    border: 2px solid #fbc02d; /* Darker yellow border */
}

/* Checkmate Indicator */
.checkmate-indicator::after {
    content: "⚔️"; /* Crossed swords emoji */
    font-size: 3vw;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* Media queries for smaller screens */
@media (max-width: 600px) {
    body {
        background-image: url(pics/bg3.webp);
    }
    #player-names {
        font-size: 16px; /* Reduce font size for players on small screens */
        margin: 80px 0px 40px;
    }

    .player {
        padding: 5px 10px; /* Smaller padding for mobile */
    }

    .square .piece {
        font-size: 10vw; /* Larger piece font size for smaller screens */
    }

    .close {
        font-size: 24px; /* Adjust close button size */
    }

    .checkmate-indicator::after {
        font-size: 10vw;
    }
}