#loading {
    position: fixed;
    z-index: 50000;
    /* Inline SVG centered */
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.9); /* Light overlay */
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    margin: 0 auto;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
    transform: translateZ(0); /* Enable hardware acceleration */
}

.dark #loading {
    background-color: #020617;
}

#loading.hidden {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
}