/* ============================================
   404CTO V2 - CRT / Scanline / Noise Effects
   ============================================ */

/* ── CRT Scanline Overlay ── */
.crt-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: var(--z-overlay);
    overflow: hidden;
}

.crt-overlay::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(0deg,
            transparent,
            transparent 2px,
            rgba(0, 0, 0, 0.03) 2px,
            rgba(0, 0, 0, 0.03) 4px);
    animation: scanlineShift 8s linear infinite;
}

/* ── Noise Texture ── */
.crt-overlay::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
    background-size: 256px 256px;
    opacity: 0.4;
    animation: noiseShift 0.5s steps(10) infinite;
}

/* ── Vignette Effect ── */
.vignette {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: calc(var(--z-overlay) - 1);
    background: radial-gradient(ellipse at center,
            transparent 60%,
            rgba(0, 0, 0, 0.4) 100%);
}

/* ── Flicker Effect (subtle) ── */
.crt-flicker {
    animation: crtFlicker 0.15s infinite;
}

/* ── Green Glow on Text ── */
.terminal-glow {
    text-shadow:
        0 0 5px var(--green-glow),
        0 0 10px var(--green-glow),
        0 0 20px rgba(0, 255, 136, 0.1);
}

/* ── Keyframes ── */
@keyframes scanlineShift {
    0% {
        transform: translateY(0);
    }

    100% {
        transform: translateY(4px);
    }
}

@keyframes noiseShift {
    0% {
        transform: translate(0, 0);
    }

    10% {
        transform: translate(-5%, -5%);
    }

    20% {
        transform: translate(-10%, 5%);
    }

    30% {
        transform: translate(5%, -10%);
    }

    40% {
        transform: translate(-5%, 15%);
    }

    50% {
        transform: translate(-10%, 5%);
    }

    60% {
        transform: translate(15%, 0);
    }

    70% {
        transform: translate(0, 10%);
    }

    80% {
        transform: translate(-15%, 0);
    }

    90% {
        transform: translate(10%, 5%);
    }

    100% {
        transform: translate(5%, 0);
    }
}

@keyframes crtFlicker {
    0% {
        opacity: 0.97;
    }

    5% {
        opacity: 0.95;
    }

    10% {
        opacity: 0.98;
    }

    15% {
        opacity: 0.96;
    }

    20% {
        opacity: 0.99;
    }

    50% {
        opacity: 0.97;
    }

    80% {
        opacity: 0.98;
    }

    90% {
        opacity: 0.96;
    }

    100% {
        opacity: 0.98;
    }
}