#preloader {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: #F9F9F9;
display: flex;
justify-content: center;
align-items: center;
z-index: 9999;
transition: opacity 0.8s ease-in-out;
}
#loader-logo {
width: 200px;
opacity: 0;
animation: fadeInOut 1.5s infinite alternate;
}
@keyframes fadeInOut {
0% { opacity: 0.1; }
100% { opacity: 1; }
}
.hidden {
opacity: 0;
pointer-events: none;
}