/* Fade transition styles for splash and startup screens */
#splash-screen {
    opacity: 1;
    transition: opacity 0.8s ease;
}
#splash-screen.fade-out {
    opacity: 0;
    pointer-events: none;
}
#startup-screen {
    opacity: 0;
    transition: opacity 0.8s ease;
    pointer-events: none;
}
#startup-screen.active {
    opacity: 1;
    pointer-events: auto;
}
/* Video intro styles */
#video-intro-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000;
    z-index: 9998;
    display: none;
}
#video-intro-container.active {
    opacity: 1;
    pointer-events: auto;
}
/* Background fade transition */
.background {
    transition: background-image 0.5s ease;
}
#starfield {
    transition: opacity 0.5s ease;
}