.solar-system {
    width: 100%;
    position: relative;
    width: 500px;
    height: 500px;
    transition: transform 0.5s ease-in-out;
}

.sun {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 80px;
    height: 80px;
    background: radial-gradient(circle, #fff700, #ffcc00); /* Dégradé du jaune clair au jaune plus foncé */
    border-radius: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 30px rgba(255, 204, 0, 0.8), 0 0 60px rgba(255, 204, 0, 0.5); /* Ombres plus prononcées */
    border: 2px solid rgba(255, 204, 0, 0.5); /* Bordure douce */
    animation: sunPulse 1.5s ease-in-out infinite; 
}

@keyframes sunPulse {
    0% {
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        transform: translate(-50%, -50%) scale(1.05);
    }
    100% {
        transform: translate(-50%, -50%) scale(1);
    }
}