.background {
    position: fixed;
    inset: 0;
    z-index: -2;
    overflow: hidden;
}

.slides img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    animation: slideShow 68s infinite;
}

@keyframes slideShow {
    0%   { opacity: 0; }
    10%  { opacity: 1; }
    40%  { opacity: 1; }
    50%  { opacity: 0; }
    100% { opacity: 0; }
}

.background::after {
    content: "";
    position: absolute;
    inset: 0;
    backdrop-filter: blur(8px);
    background: rgba(14,14,17,0.7);
}

/* efeito lateral */
body.has-side-effects::before,
body.has-side-effects::after {
    content: "";
    position: fixed;
    top: 0;
    width: 250px;
    height: 100vh;
    pointer-events: none;
    z-index: 0;
}

body.has-side-effects::before {
    left: 0;
    background: linear-gradient(to right, rgba(160,120,255,0.05), transparent);
}

body.has-side-effects::after {
    right: 0;
    background: linear-gradient(to left, rgba(160,120,255,0.05), transparent);
}