:root {
            --hue: 223;
            --bg: hsl(var(--hue), 90%, 95%);
            --fg: hsl(var(--hue), 90%, 5%);
            --trans-dur: 0.3s;
        }

        .loading-screen {
            position: fixed;
            left: 0px;
            top: 0px;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.9);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 9999;
            opacity: 1;
            transition: opacity var(--trans-dur);
        }

        .loading-screen.fade-out {
            opacity: 0;
            pointer-events: none;
        }

        .loading-screen.fade-in {
            opacity: 1;
            pointer-events: auto;
        }

        .loading-screen.hidden {
            opacity: 0;
            pointer-events: none;
        }

        .ip {
            width: 16em;
            height: 8em;
        }

        .ip__track {
            stroke: hsl(var(--hue), 90%, 90%);
            transition: stroke var(--trans-dur);
        }

        .ip__worm1,
        .ip__worm2 {
            animation: worm1 2s linear infinite;
        }

        .ip__worm2 {
            animation-name: worm2;
        }

        /* Dark theme */
        @media (prefers-color-scheme: dark) {
            :root {
                --bg: hsl(var(--hue), 90%, 5%);
                --fg: hsl(var(--hue), 90%, 95%);
            }

            .ip__track {
                stroke: hsl(var(--hue), 90%, 15%);
            }
        }

        /* Animation */
        @keyframes worm1 {
            from {
                stroke-dashoffset: 0;
            }

            50% {
                animation-timing-function: steps(1);
                stroke-dashoffset: -358;
            }

            50.01% {
                animation-timing-function: linear;
                stroke-dashoffset: 358;
            }

            to {
                stroke-dashoffset: 0;
            }
        }

        @keyframes worm2 {
            from {
                stroke-dashoffset: 358;
            }

            50% {
                stroke-dashoffset: 0;
            }

            to {
                stroke-dashoffset: -358;
            }
        }