.space {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.star {
    position: absolute;
    width: 2px;
    height: 2px;
    background: white;
    border-radius: 50%;
    animation: starTwinkle 5s infinite ease-in-out, starMove 10s linear infinite;
}

.planet {
    position: absolute;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5); 
    background-size: cover;
    background-position: center;
    animation: planetOrbit 20s infinite linear;
}

.planet-small {
    width: 30px;
    height: 30px;
    background-image: url('../assets/images/planet1.png');
}

.planet-medium {
    width: 60px;
    height: 60px;
    background-image: url('../assets/images/planet2.png');
}

.planet-large {
    width: 100px;
    height: 100px;
    background-image: url('../assets/images/planet3.png');
}

.planet-extra-large {
    width: 130px;
    height: 130px;
    background-image: url('../assets/images/planet4.png');
}

.planet-giant {
    width: 160px;
    height: 160px;
    background-image: url('../assets/images/planet5.png');
}


@keyframes starTwinkle {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

@keyframes starMove {
    0% {
        transform: translateX(100vw); 
    }
    100% {
        transform: translateX(-100vw); 
    }
}

@keyframes planetOrbit {
    0% { transform: translate(-200px, -200px) scale(1); }
    50% { transform: translate(200px, 200px) scale(1.2); }
    100% { transform: translate(-200px, -200px) scale(1); }
}