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

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #0a0a0f;
}

#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.aurora {
    position: fixed;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.15;
    z-index: 1;
    pointer-events: none;
    animation: auroraFloat 15s ease-in-out infinite;
}

.aurora-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, #818cf8, transparent 70%);
    top: -200px;
    right: -100px;
}

.aurora-2 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, #c084fc, transparent 70%);
    bottom: -200px;
    left: -100px;
    animation-delay: -5s;
}

.aurora-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #f472b6, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.08;
    animation-delay: -10s;
}

@keyframes auroraFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -40px) scale(1.1); }
    50% { transform: translate(-20px, 20px) scale(0.95); }
    75% { transform: translate(40px, 10px) scale(1.05); }
}

.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 256px 256px;
}