.fov-circle {
    position: fixed;
    width: 150px;
    height: 150px;
    border: 2px solid rgba(255, 255, 255, 0.6);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: 
        opacity 0.3s ease,
        border-color 0.2s ease,
        width 0.2s ease,
        height 0.2s ease,
        transform 0.1s ease;
    box-shadow: 
        0 0 15px rgba(255, 255, 255, 0.4),
        inset 0 0 15px rgba(255, 255, 255, 0.1);
    opacity: 1;
}