/* =============================================
   Снегопад
   ============================================= */
#snowfall-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.snowflake {
    position: absolute;
    background: white;
    border-radius: 50%;
    will-change: transform;
    animation: snowfall linear infinite;
    animation-duration: var(--snowfall-duration, 5s);
    animation-delay: var(--snowfall-delay, 0s);
}

@keyframes snowfall {
    0% {
        transform: translateY(0) translateX(calc(var(--snowfall-drift, 0px) * 0));
        opacity: 1;
    }
    6.25% {
        transform: translateY(6.25vh) translateX(calc(var(--snowfall-drift, 0px) * 0.0625 + var(--snowfall-swing-amplitude, 20px) * 0.382683));
    }
    12.5% {
        transform: translateY(12.5vh) translateX(calc(var(--snowfall-drift, 0px) * 0.125 + var(--snowfall-swing-amplitude, 20px) * 0.707107));
    }
    18.75% {
        transform: translateY(18.75vh) translateX(calc(var(--snowfall-drift, 0px) * 0.1875 + var(--snowfall-swing-amplitude, 20px) * 0.92388));
    }
    25% {
        transform: translateY(25vh) translateX(calc(var(--snowfall-drift, 0px) * 0.25 + var(--snowfall-swing-amplitude, 20px) * 1));
    }
    31.25% {
        transform: translateY(31.25vh) translateX(calc(var(--snowfall-drift, 0px) * 0.3125 + var(--snowfall-swing-amplitude, 20px) * 0.92388));
    }
    37.5% {
        transform: translateY(37.5vh) translateX(calc(var(--snowfall-drift, 0px) * 0.375 + var(--snowfall-swing-amplitude, 20px) * 0.707107));
    }
    43.75% {
        transform: translateY(43.75vh) translateX(calc(var(--snowfall-drift, 0px) * 0.4375 + var(--snowfall-swing-amplitude, 20px) * 0.382683));
    }
    50% {
        transform: translateY(50vh) translateX(calc(var(--snowfall-drift, 0px) * 0.5));
    }
    56.25% {
        transform: translateY(56.25vh) translateX(calc(var(--snowfall-drift, 0px) * 0.5625 - var(--snowfall-swing-amplitude, 20px) * 0.382683));
    }
    62.5% {
        transform: translateY(62.5vh) translateX(calc(var(--snowfall-drift, 0px) * 0.625 - var(--snowfall-swing-amplitude, 20px) * 0.707107));
    }
    68.75% {
        transform: translateY(68.75vh) translateX(calc(var(--snowfall-drift, 0px) * 0.6875 - var(--snowfall-swing-amplitude, 20px) * 0.92388));
    }
    75% {
        transform: translateY(75vh) translateX(calc(var(--snowfall-drift, 0px) * 0.75 - var(--snowfall-swing-amplitude, 20px) * 1));
    }
    81.25% {
        transform: translateY(81.25vh) translateX(calc(var(--snowfall-drift, 0px) * 0.8125 - var(--snowfall-swing-amplitude, 20px) * 0.92388));
    }
    87.5% {
        transform: translateY(87.5vh) translateX(calc(var(--snowfall-drift, 0px) * 0.875 - var(--snowfall-swing-amplitude, 20px) * 0.707107));
    }
    93.75% {
        transform: translateY(93.75vh) translateX(calc(var(--snowfall-drift, 0px) * 0.9375 - var(--snowfall-swing-amplitude, 20px) * 0.382683));
    }
    100% {
        transform: translateY(100vh) translateX(calc(var(--snowfall-drift, 0px) * 1));
        opacity: 0.3;
    }
}