body {
    background-color: #585858;
}

main {
    position: relative;
    margin-left: auto;
    margin-right: auto;
    width: 1024px;
}

#gameCanvas {
    background: white;
    border: 1px solid black;
}

#infoBox {
    background: white;
    width: 1024px;
}

#infoBox * {
    padding: 8px;
    margin-top: 0px;
}

#debugBox {
    background: #b6b6b6
}

#debugBox * {
    padding: 8px;
}

.debug {
    visibility: hidden;
}

#aboutScreen {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    width: 1024px;
    height: 768px;
    background-color: #fefefe;
    z-index: 10;
    border-bottom: 5px solid #fefefe;
    box-sizing: border-box;
    padding: 0;
    font-family: Arial, sans-serif;
}

.about-header {
    background-color: black;
    color: white;
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.about-header h2 {
    margin: 0;
}

.about-content {
    padding: 30px 50px;
    overflow-y: auto;
    height: calc(100% - 80px);
    box-sizing: border-box;
}

.story-section h3, .rules-section h3 {
    border-bottom: 2px solid #eee;
    padding-bottom: 5px;
    color: black;
}

.info-grid {
    display: flex;
    gap: 40px;
    margin-top: 20px;
    background-color: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
}

.info-column { flex: 1; }
.info-column ul { padding-left: 20px; }

.game-btn {
    padding: 10px 25px;
    font-size: 16px;
    cursor: pointer;
    background-color: white;
    color: black;
    border: 2px solid white;
    border-radius: 5px;
    font-weight: bold;
}
.game-btn:hover {
    background-color: black;
    color: white;
}

.music-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    z-index: 5;
    padding: 8px 15px;
    font-size: 16px;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    border: 2px solid white;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    transition: background-color 0.2s;
}

.music-btn:hover {
    background-color: #4CAF50;
    color: white;
}

#difficulty-selector {
    text-align: center;
    margin-bottom: 20px;
    display: none;
}