:root {
    /* TODO: chrome以外もサポートする。 */
    interpolate-size: allow-keywords;
}

body {
    margin: 0;
    padding: 0;
    color: rgba(255, 255, 255, 0.87);
    background-color: #000000;
}

#app {
    width: 100%;
    height: 100vh;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

#qr-modal-background {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
}

#qr-modal-background.visible {
    display: block;
}

#qr {
    /* display: none; */
    width: 0;
    height: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1000;
    background-color: #fff;
    transition: all 0.3s ease-in-out;
    overflow: hidden;
}

#qr canvas {
    width: 100%;
    height: 100%;
    /* position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%); */
}

#qr.visible {
    /* display: block; */
    padding: 10px;
    width: auto;
    height: auto;
    transition: all 0.3s ease-in-out;
}