.background-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.particles-container {
    position: absolute;
    width: 100%;
    height: 100%;
}

.gradient-overlay {
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg,
            rgba(0, 255, 255, 0.1),
            rgba(0, 0, 0, 0.3),
            rgba(0, 255, 255, 0.1));
    animation: gradientShift 15s ease infinite;
}

.vignette {
    position: absolute;
    width: 100%;
    height: 100%;
    box-shadow: inset 0 0 150px rgba(0, 0, 0, 0.7);
    pointer-events: none;
}

/* Effet de grille */
.grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background:
        linear-gradient(90deg, rgba(0, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(rgba(0, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: -1;
}

/* Effet scanline */
.scanline {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: repeating-linear-gradient(to bottom,
            transparent 0%,
            rgba(0, 255, 255, 0.02) 50%,
            transparent 100%);
    background-size: 100% 4px;
    pointer-events: none;
    z-index: -1;
}


@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}