/* ═══════════════════════════════════════════════════════════════
   CRT SCREEN EFFECTS - Scanlines, Flicker, Glow
   ═══════════════════════════════════════════════════════════════ */

/* CRT Scanlines Overlay */
body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(0deg,
            rgba(0, 0, 0, 0.15),
            rgba(0, 0, 0, 0.15) 1px,
            transparent 1px,
            transparent 2px);
    pointer-events: none;
    z-index: var(--z-scanlines);
    animation: scanlines 8s linear infinite;
}

@keyframes scanlines {
    0% {
        transform: translateY(0);
    }

    100% {
        transform: translateY(10px);
    }
}

/* Screen Flicker Effect */
body::after {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(18, 16, 16, 0.1);
    opacity: 0;
    z-index: var(--z-flicker);
    pointer-events: none;
    animation: flicker 0.15s infinite;
}

@keyframes flicker {
    0% {
        opacity: 0.27861;
    }

    5% {
        opacity: 0.34769;
    }

    10% {
        opacity: 0.23604;
    }

    15% {
        opacity: 0.90626;
    }

    20% {
        opacity: 0.18128;
    }

    25% {
        opacity: 0.83891;
    }

    30% {
        opacity: 0.65583;
    }

    35% {
        opacity: 0.67807;
    }

    40% {
        opacity: 0.26559;
    }

    45% {
        opacity: 0.84693;
    }

    50% {
        opacity: 0.96019;
    }

    55% {
        opacity: 0.08594;
    }

    60% {
        opacity: 0.20313;
    }

    65% {
        opacity: 0.71988;
    }

    70% {
        opacity: 0.53455;
    }

    75% {
        opacity: 0.37288;
    }

    80% {
        opacity: 0.71428;
    }

    85% {
        opacity: 0.70419;
    }

    90% {
        opacity: 0.7003;
    }

    95% {
        opacity: 0.36108;
    }

    100% {
        opacity: 0.24387;
    }
}

/* Cursor Blink Animation */
@keyframes cursor-blink {
    50% {
        opacity: 0;
    }
}

/* Mobile Performance - Disable heavy effects */
@media (max-width: 768px) {
    body::before {
        animation: none;
    }

    body::after {
        display: none;
    }
}