/* Loading spinner styles */
#loader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(128, 128, 128, 0.7); /* Semi-transparent gray overlay */
    backdrop-filter: blur(2px); /* Slight blur effect */
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease;
}
.logo-spinner {
    width: 96px;
    height: 96px;
    animation: spin 2s linear infinite;
    filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.7));
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}