* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    overflow: hidden;
    background: radial-gradient(ellipse at bottom, #1B2735 0%, #090A0F 100%);
    font-family: 'Arial', sans-serif;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
}

/* Bintang-bintang */
#stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.star {
    position: absolute;
    background: white;
    border-radius: 50%;
    animation: twinkle var(--duration) infinite ease-in-out;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.2; }
    50% { opacity: 1; }
}

/* Efek Nebula */
.nebula {
    position: fixed;
    border-radius: 50%;
    filter: blur(50px);
    opacity: 0.3;
    mix-blend-mode: screen;
    z-index: 2;
}

#nebula1 {
    background: radial-gradient(circle, #9c27b0, transparent 70%);
    width: 300px;
    height: 300px;
    top: 20%;
    left: 30%;
    animation: float 25s infinite ease-in-out;
}

#nebula2 {
    background: radial-gradient(circle, #2196f3, transparent 70%);
    width: 400px;
    height: 400px;
    bottom: 15%;
    right: 25%;
    animation: float 30s infinite ease-in-out reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    25% { transform: translate(50px, 50px); }
    50% { transform: translate(-50px, 50px); }
    75% { transform: translate(-50px, -50px); }
}

/* Komet */
.comet {
    position: fixed;
    background: linear-gradient(to right, rgba(255,255,255,0) 0%, rgba(255,255,255,0.8) 50%, rgba(255,255,255,0) 100%);
    z-index: 3;
    transform-origin: left center;
    filter: blur(1px);
}

@media (max-width: 768px) {
    h1 {
        font-size: 1.8rem;
    }
    p {
        font-size: 1rem;
    }
}