:root {
    --bg-0: #e0e0e0;
    --on-bg-0: #303030;
    --on-bg-1: #606060;
    --on-bg-2: #808080;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-0: #202020;
        --on-bg-0: #e0e0e0;
        --on-bg-1: #c0c0c0;
        --on-bg-2: #808080;
    }
}

body {
    margin: 0;
    padding: 0;

    width: 100%;
    height: 100vh;

    font-family: "Inter", "Arial", sans-serif;
    font-size: 32px;

    color: var(--on-bg-0);
    background-color: var(--bg-0);

    transition: color 1s, background-color 1s;
}

#app {
    width: 100%;
    height: 100%;

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.vignette {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-image: radial-gradient(transparent, black);
    opacity: .1;
    pointer-events: none;
}

.title {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: end;
}

.title h1, .title h2 {
    margin: 0;
}

.title h1 {
    font-size: 2em;
    margin-bottom: -.2em;
}

.title h2 {
    font-size: 1.25em;
    color: var(--on-bg-2);
    animation: pulse .5s alternate ease-in-out infinite;
}

@keyframes pulse {
    from { opacity: 1; }
    to { opacity: .5; }
}

header {
    position: fixed;
    top: 0;
}

footer {
    position: fixed;
    bottom: 0;
}

header,
footer {
    width: calc(100vw - 2.8em);
    padding: 1em 1.4em;
    display: flex;
    flex-direction: row;
    justify-content: space-between;

    color: var(--on-bg-2);
}

header h3,
footer h3 {
    margin: 0;
    font-family: "Monaspace Argon", monospace;
}

#time {
    font-family: "Monaspace Argon", monospace;
}

#cover {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: var(--bg-0);
    transition: opacity 1s ease-out;
}

#cover.hidden {
    opacity: 0;
    pointer-events: none;
}