* {
    box-sizing: border-box;
}

html,
body {
    width: 100%;
    min-height: 100%;
    margin: 0;
    background: #081226;
    color: #fff;
    font-family: Arial, sans-serif;
}

body {
    display: grid;
    place-items: center;
    overflow: hidden;
}

#game-shell {
    width: min(100vw, 960px);
    margin: auto;
}

header {
    display: flex;
    justify-content: space-between;
    padding: 8px 12px;
    font-size: 15px;
}

canvas {
    display: block;
    width: 100%;
    height: auto;
    max-height: calc(100vh - 90px);
    background: #07152c;
    touch-action: none;
}

#controls {
    display: flex;
    justify-content: center;
    gap: 24px;
    padding: 7px;
}

button {
    width: 92px;
    height: 42px;
    border: 0;
    border-radius: 12px;
    font-size: 24px;
    color: #fff;
    background: #1d4f91;
    touch-action: none;
}