body fuse-splash-screen {
    --neon-orange: #ff8a2a;
    --neon-orange-soft: #ffb35c;
    --neon-blue-light: #6fe3ff;
    --neon-blue-strong: #1c5dff;
    --neon-white: #f8fbff;
    --deep-space: #050a18;
    --deep-space-2: #08142c;

    position: fixed;
    inset: 0;
    display: grid;
    place-items: center;
    background:
        radial-gradient(900px 600px at 18% 12%, rgba(111, 227, 255, 0.18), transparent 65%),
        radial-gradient(1000px 700px at 84% 18%, rgba(28, 93, 255, 0.22), transparent 65%),
        radial-gradient(800px 700px at 50% 85%, rgba(255, 138, 42, 0.18), transparent 60%),
        linear-gradient(145deg, #040811, #07142b 45%, #03060f);
    color: var(--neon-white);
    z-index: 999999;
    pointer-events: none;
    overflow: hidden;
    opacity: 1;
    visibility: visible;
    transition: opacity 400ms cubic-bezier(0.4, 0, 0.2, 1);
    font-family: "IBM Plex Mono", "Inter", sans-serif;
}

body fuse-splash-screen::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(111, 227, 255, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(28, 93, 255, 0.07) 1px, transparent 1px);
    background-size: 140px 140px;
    opacity: 0.35;
    mix-blend-mode: screen;
}

body fuse-splash-screen::after {
    content: "";
    position: absolute;
    inset: -20%;
    background:
        radial-gradient(500px 500px at 30% 35%, rgba(255, 138, 42, 0.2), transparent 60%),
        radial-gradient(600px 600px at 70% 55%, rgba(111, 227, 255, 0.2), transparent 65%);
    animation: splash-bloom 10s ease-in-out infinite;
    opacity: 0.8;
}

body fuse-splash-screen .splash-universe {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
}

body fuse-splash-screen #splash-particles {
    position: absolute;
    inset: 0;
    z-index: 1;
}

body fuse-splash-screen #splash-particles canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

body fuse-splash-screen .splash-scanlines {
    position: absolute;
    inset: 0;
    z-index: 2;
    background: repeating-linear-gradient(
        180deg,
        rgba(255, 255, 255, 0.05) 0,
        rgba(255, 255, 255, 0.05) 1px,
        transparent 1px,
        transparent 7px
    );
    opacity: 0.25;
    mix-blend-mode: screen;
    animation: scanline-shift 9s linear infinite;
}

body fuse-splash-screen .splash-hud {
    position: absolute;
    top: 52%;
    left: 50%;
    width: 62vmin;
    height: 62vmin;
    border-radius: 50%;
    border: 1px solid rgba(111, 227, 255, 0.3);
    box-shadow:
        0 0 18px rgba(111, 227, 255, 0.25),
        inset 0 0 22px rgba(28, 93, 255, 0.15);
    transform: translate(-50%, -50%);
    z-index: 2;
    animation: hud-rotate 18s linear infinite;
}

body fuse-splash-screen .splash-hud--inner {
    width: 40vmin;
    height: 40vmin;
    border-style: dashed;
    border-color: rgba(255, 138, 42, 0.35);
    animation-duration: 14s;
    animation-direction: reverse;
}

body fuse-splash-screen .splash-crosshair {
    position: absolute;
    top: 52%;
    left: 50%;
    width: 70vmin;
    height: 70vmin;
    transform: translate(-50%, -50%);
    z-index: 2;
}

body fuse-splash-screen .splash-crosshair::before,
body fuse-splash-screen .splash-crosshair::after {
    content: "";
    position: absolute;
    background: linear-gradient(
        180deg,
        transparent,
        rgba(111, 227, 255, 0.45),
        transparent
    );
    opacity: 0.7;
}

body fuse-splash-screen .splash-crosshair::before {
    width: 2px;
    height: 100%;
    left: 50%;
    transform: translateX(-50%);
}

body fuse-splash-screen .splash-crosshair::after {
    width: 100%;
    height: 2px;
    top: 50%;
    transform: translateY(-50%);
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 138, 42, 0.5),
        transparent
    );
}

body fuse-splash-screen .splash-sweep {
    position: absolute;
    top: 52%;
    left: 50%;
    width: 72vmin;
    height: 72vmin;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    background: conic-gradient(
        from 0deg,
        rgba(111, 227, 255, 0) 0deg,
        rgba(111, 227, 255, 0.18) 30deg,
        rgba(255, 138, 42, 0.1) 50deg,
        rgba(111, 227, 255, 0) 70deg,
        rgba(111, 227, 255, 0) 360deg
    );
    mix-blend-mode: screen;
    opacity: 0.8;
    z-index: 2;
    animation: sweep 10s linear infinite;
}

body fuse-splash-screen .splash-connection {
    position: absolute;
    height: 2px;
    width: 46vw;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(111, 227, 255, 0.7),
        rgba(255, 138, 42, 0.85),
        transparent
    );
    filter: drop-shadow(0 0 10px rgba(111, 227, 255, 0.4));
    opacity: 0.7;
    animation: connection-pulse 6s ease-in-out infinite;
}

body fuse-splash-screen .splash-connection-1 {
    top: 46%;
    left: 50%;
    transform: translateX(-50%) rotate(12deg);
}

body fuse-splash-screen .splash-connection-2 {
    top: 58%;
    left: 50%;
    transform: translateX(-50%) rotate(-18deg);
    animation-delay: -2s;
}

body fuse-splash-screen .atom {
    position: absolute;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.9;
    filter: drop-shadow(0 0 20px rgba(111, 227, 255, 0.35));
    animation: atom-float 9s ease-in-out infinite;
    z-index: 3;
}

body fuse-splash-screen .atom--primary {
    width: 420px;
    height: 420px;
    top: 52%;
    left: 50%;
    animation-duration: 10s;
}

body fuse-splash-screen .atom--primary::before {
    content: "";
    position: absolute;
    inset: 4%;
    border-radius: 50%;
    border: 1px dashed rgba(111, 227, 255, 0.45);
    opacity: 0.8;
    animation: ring-rotate 16s linear infinite;
}

body fuse-splash-screen .atom--primary::after {
    content: "";
    position: absolute;
    inset: 18%;
    border-radius: 50%;
    border: 1px solid rgba(255, 138, 42, 0.32);
    box-shadow: inset 0 0 18px rgba(255, 138, 42, 0.2);
}

body fuse-splash-screen .atom .nucleus {
    position: absolute;
    inset: 38%;
    border-radius: 50%;
    background: radial-gradient(
        circle,
        var(--neon-white) 0%,
        var(--neon-blue-light) 55%,
        rgba(255, 138, 42, 0.85) 100%
    );
    box-shadow:
        0 0 25px rgba(111, 227, 255, 0.6),
        0 0 50px rgba(255, 138, 42, 0.35);
    animation: nucleus-pulse 3s ease-in-out infinite;
}

body fuse-splash-screen .atom .orbit {
    position: absolute;
    inset: 12%;
    border: 1px solid rgba(111, 227, 255, 0.28);
    border-radius: 50%;
    --tilt: 20deg;
    --speed: 10s;
    --electron-color: var(--neon-blue-light);
    animation: orbit-spin var(--speed) linear infinite;
}

body fuse-splash-screen .atom .orbit--two {
    inset: 20%;
    border-color: rgba(28, 93, 255, 0.28);
    --tilt: 90deg;
    --speed: 12s;
    --electron-color: var(--neon-orange);
}

body fuse-splash-screen .atom .orbit--three {
    inset: 6%;
    border-color: rgba(255, 138, 42, 0.28);
    --tilt: 140deg;
    --speed: 8s;
    --electron-color: var(--neon-blue-strong);
}

body fuse-splash-screen .atom .orbit .electron {
    position: absolute;
    top: -6px;
    left: 50%;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: radial-gradient(
        circle,
        var(--neon-white) 0%,
        var(--electron-color) 60%,
        rgba(255, 255, 255, 0) 70%
    );
    box-shadow:
        0 0 8px var(--electron-color),
        0 0 18px rgba(255, 255, 255, 0.5);
    transform: translateX(-50%);
}

body fuse-splash-screen .splash-content {
    position: relative;
    z-index: 4;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
    padding: 28px 44px;
    background: linear-gradient(135deg, rgba(6, 16, 34, 0.75), rgba(6, 16, 34, 0.35));
    border: 1px solid rgba(111, 227, 255, 0.35);
    border-radius: 22px;
    box-shadow:
        0 0 25px rgba(28, 93, 255, 0.25),
        inset 0 0 20px rgba(255, 138, 42, 0.16);
    backdrop-filter: blur(10px);
    text-align: center;
}

body fuse-splash-screen .splash-content::before {
    content: "";
    position: absolute;
    inset: 8px;
    border-radius: 16px;
    border: 1px solid rgba(111, 227, 255, 0.18);
    pointer-events: none;
}

body fuse-splash-screen .splash-logo {
    width: 220px;
    max-width: 70vw;
    filter: drop-shadow(0 0 12px rgba(111, 227, 255, 0.45));
}

body fuse-splash-screen .splash-status {
    display: flex;
    flex-direction: column;
    gap: 6px;
    text-transform: uppercase;
    text-shadow: 0 0 10px rgba(111, 227, 255, 0.45);
    letter-spacing: 0.32em;
    align-items: center;
}

body fuse-splash-screen .splash-status .status-title {
    font-size: 12px;
    color: var(--neon-blue-light);
}

body fuse-splash-screen .splash-status .status-subtitle {
    font-size: 10px;
    color: var(--neon-orange-soft);
    letter-spacing: 0.36em;
}

body fuse-splash-screen .splash-signal {
    display: flex;
    gap: 10px;
    align-items: flex-end;
}

body fuse-splash-screen .splash-signal span {
    width: 6px;
    height: 26px;
    border-radius: 999px;
    background: linear-gradient(180deg, var(--neon-blue-light), var(--neon-blue-strong));
    box-shadow: 0 0 12px rgba(111, 227, 255, 0.6);
    transform-origin: bottom;
    animation: signal 1.4s ease-in-out infinite;
}

body fuse-splash-screen .splash-signal span:nth-child(2) {
    animation-delay: 0.2s;
    background: linear-gradient(180deg, var(--neon-orange-soft), var(--neon-orange));
}

body fuse-splash-screen .splash-signal span:nth-child(3) {
    animation-delay: 0.4s;
}

body fuse-splash-screen .splash-signal span:nth-child(4) {
    animation-delay: 0.6s;
    background: linear-gradient(180deg, var(--neon-blue-light), var(--neon-orange));
}

@keyframes orbit-spin {
    from {
        transform: rotate(var(--tilt));
    }
    to {
        transform: rotate(calc(var(--tilt) + 360deg));
    }
}

@keyframes atom-float {
    0%, 100% {
        transform: translate(-50%, -50%) translateY(0);
    }
    50% {
        transform: translate(-50%, -50%) translateY(-18px);
    }
}

@keyframes nucleus-pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.9;
    }
    50% {
        transform: scale(1.15);
        opacity: 1;
    }
}

@keyframes signal {
    0%, 100% {
        transform: scaleY(0.45);
        opacity: 0.6;
    }
    50% {
        transform: scaleY(1.2);
        opacity: 1;
    }
}

@keyframes connection-pulse {
    0%, 100% {
        opacity: 0.35;
        filter: drop-shadow(0 0 4px rgba(111, 227, 255, 0.4));
    }
    50% {
        opacity: 0.9;
        filter: drop-shadow(0 0 14px rgba(111, 227, 255, 0.7));
    }
}

@keyframes splash-bloom {
    0%, 100% {
        transform: scale(1);
        opacity: 0.75;
    }
    50% {
        transform: scale(1.05);
        opacity: 1;
    }
}

@keyframes scanline-shift {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 0 140px;
    }
}

@keyframes hud-rotate {
    from {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

@keyframes sweep {
    from {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

@keyframes ring-rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@media (max-width: 900px) {
    body fuse-splash-screen .atom--primary {
        width: 320px;
        height: 320px;
    }

    body fuse-splash-screen .splash-connection {
        width: 60vw;
    }

    body fuse-splash-screen .splash-content {
        padding: 22px 30px;
    }

    body fuse-splash-screen .splash-status {
        letter-spacing: 0.24em;
    }
}

@media (max-width: 600px) {
    body fuse-splash-screen .atom--primary {
        width: 260px;
        height: 260px;
    }

    body fuse-splash-screen .splash-content {
        padding: 18px 24px;
    }

    body fuse-splash-screen .splash-logo {
        width: 180px;
    }

    body fuse-splash-screen .splash-status {
        letter-spacing: 0.2em;
    }
}

body:not(.fuse-splash-screen-hidden) {
    overflow: hidden;
}

body.fuse-splash-screen-hidden fuse-splash-screen {
    visibility: hidden;
    opacity: 0;
}