body {
    margin: 0;
    overflow: hidden;
    background-color: #000;
    color: #fff;
    font-family: 'Courier New', Courier, monospace;
}

#game-canvas {
    display: block;
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 10;
}

#ui-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 5;
}

#hud {
    position: absolute;
    top: 20px;
    left: 20px;
    right: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    opacity: 0;
    transition: opacity 0.5s;
}

#score,
#multiplier,
#speedometer {
    font-size: 24px;
    text-shadow: 0 0 5px #0ff, 0 0 10px #0ff;
}

#speedometer {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
}

#energy-container {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    width: 300px;
    height: 20px;
    border: 2px solid #0ff;
    border-radius: 5px;
    background-color: rgba(0, 255, 255, 0.1);
}

#energy-bar {
    width: 100%;
    height: 100%;
    background-color: #0ff;
    box-shadow: 0 0 10px #0ff, 0 0 15px #0ff;
    transition: width 0.1s linear;
}

.title-text {
    font-size: 64px;
    margin: 0;
    text-shadow: 0 0 10px #f0f, 0 0 20px #f0f;
}

.info-text {
    font-size: 20px;
    margin: 20px;
    max-width: 500px;
    line-height: 1.5;
    text-shadow: 0 0 5px #fff;
}

.action-button {
    font-size: 24px;
    padding: 10px 20px;
    background-color: transparent;
    border: 2px solid #0ff;
    color: #0ff;
    cursor: pointer;
    text-shadow: 0 0 5px #0ff;
    transition: background-color 0.3s, color 0.3s;
    pointer-events: all;
}

.action-button:hover {
    background-color: #0ff;
    color: #000;
}

#game-over h1 {
    text-shadow: 0 0 10px #f00, 0 0 20px #f00;
}

#high-score {
    font-size: 24px;
    margin-top: 10px;
    color: #f0f;
    text-shadow: 0 0 5px #f0f;
}

#pause-button {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 18px;
    padding: 5px 15px;
    z-index: 15;
    display: none; /* Hidden by default */
}

/* Styling for dat.gui */
.dg.main .close-button {
    background-color: #333 !important;
}

.dg.main .close-button:hover {
    background-color: #444 !important;
}

.dg li:not(.folder) {
    background: #232323;
    border-bottom: 1px solid #333;
}

.dg .cr.function:hover, .dg .cr.boolean:hover {
    background: #383838;
}