:root {
    --teumo-brighter-blue: #24b1e2;
    --teumo-blond: #c7b81d;
    --teumo-brighter-pink: #e22f44;
    --teumo-nickle: #767c77;
    --teumo-brightest-nickle: #f5f6f5;
    --bg: #101211;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "IBM Plex Mono", monospace;
    font-weight: 300;
    background: var(--bg);
    color: var(--teumo-nickle);
    overflow: hidden;
}

#logo-source {
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
    pointer-events: none;
}

#constellation {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    cursor: default;
}

.stealth {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 2rem;
    user-select: none;
    pointer-events: none;
}

.stealth .mark {
    pointer-events: auto;
}

.signal {
    margin: 0;
    font-size: 1.3rem;
    letter-spacing: 0.35em;
    text-transform: lowercase;
    color: color-mix(in srgb, var(--teumo-nickle) 45%, transparent);
    animation: standby-pulse 3s ease-in-out infinite;
}

@keyframes standby-pulse {
    0%, 100% {
        opacity: 0.35;
    }

    50% {
        opacity: 0.9;
    }
}

.signal.active {
    color: var(--teumo-brighter-blue);
    letter-spacing: 0.45em;
    opacity: 1;
    animation: none;
}

.stealth.forming .signal:not(.active) {
    opacity: 0;
    animation: none;
    transition: opacity 1.4s ease;
}

.soon {
    position: fixed;
    left: 50%;
    top: var(--soon-top, 58%);
    transform: translateX(-50%);
    margin: 0;
    font-size: 1.3rem;
    letter-spacing: 0.28em;
    text-transform: lowercase;
    color: color-mix(in srgb, var(--teumo-nickle) 50%, transparent);
    opacity: 0;
    pointer-events: none;
    white-space: nowrap;
}

.stealth.forming .soon {
    opacity: 0.55;
    transition: opacity 1.6s ease 0.5s;
}

.stealth.dissolving .soon,
.stealth.revealed .soon {
    opacity: 0;
    transition: opacity 0.5s ease 0s;
}

.mark {
    position: fixed;
    bottom: 1.75rem;
    left: 50%;
    transform: translateX(-50%);
    padding: 0;
    border: none;
    background: none;
    cursor: default;
    opacity: 0.1;
    transition: opacity 0.5s ease;
}

.mark:hover,
.mark:focus-visible {
    opacity: 0.3;
    outline: none;
}

.mark img {
    display: block;
    width: 28px;
    height: 28px;
    border-radius: 3px;
    filter: grayscale(1) brightness(1.3);
}

.reveal {
    position: fixed;
    bottom: 4.5rem;
    left: 50%;
    transform: translateX(-50%);
    margin: 0;
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    color: var(--teumo-nickle);
    white-space: nowrap;
    pointer-events: none;
    animation: fade-in 1.4s ease forwards;
}

@keyframes fade-in {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(8px);
    }

    to {
        opacity: 0.55;
        transform: translateX(-50%) translateY(0);
    }
}