/* dust.css */
#dustContainer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    overflow: hidden;
    z-index: 2000;
    transition: opacity 0.3s ease;
}

.dust-particle {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(
        circle at 32% 30%,
        rgba(255, 255, 255, 0.55) 0%,
        rgba(var(--primary-color-rgb), 0.22) 50%,
        rgba(var(--primary-color-rgb), 0.06) 100%
    );
    animation: float 20s infinite ease-in-out;
    box-shadow:
        0 0 4px rgba(255, 255, 255, 0.15),
        0 0 8px rgba(var(--primary-color-rgb), 0.12);
}

@keyframes float {
    0% {
        transform: translateX(0) translateY(0);
        opacity: 0;
    }
    50% {
        transform: translateX(var(--float-x)) translateY(var(--float-y));
        opacity: var(--dust-opacity-peak, 0.58);
    }
    100% {
        transform: translateX(calc(var(--float-x) * 2)) translateY(calc(var(--float-y) * 2));
        opacity: 0;
    }
}