/* Snowfall Effect */
.snowfall-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.snowflake {
    position: absolute;
    top: -20px;
    left: var(--start-x, 50%);
    color: #fff;
    pointer-events: none;
    user-select: none;
    will-change: transform, opacity;
    animation: snowfall var(--duration, 5s) linear infinite;
    animation-delay: var(--delay, 0s);
}

.snowflake svg {
    display: block;
    pointer-events: none;
}

/* Light theme snowflake color */
body.light .snowflake,
body:not(.dark) .snowflake {
    color: #79C5F5;
    filter: drop-shadow(0 0 3px rgba(121, 197, 245, 0.6));
}

/* Dark theme snowflake color */
body.dark .snowflake {
    color: #B2AFAF;
    filter: drop-shadow(0 0 3px rgba(178, 175, 175, 0.6));
}

@keyframes snowfall {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 1;
    }
    50% {
        opacity: 0.9;
    }
    80% {
        opacity: 0.5;
    }
    100% {
        transform: translate(var(--drift, 0px), calc(100% + 50px)) rotate(360deg);
        opacity: 0;
    }
}

@keyframes snowfall-sway-1 {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-20px);
    }
    75% {
        transform: translateX(20px);
    }
}

@keyframes snowfall-sway-2 {
    0%, 100% {
        transform: translateX(0);
    }
    33% {
        transform: translateX(-15px);
    }
    66% {
        transform: translateX(15px);
    }
}

@keyframes snowfall-sway-3 {
    0%, 100% {
        transform: translateX(0);
    }
    40% {
        transform: translateX(-25px);
    }
    80% {
        transform: translateX(25px);
    }
}

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
    .snowflake {
        animation: none;
        display: none;
    }
}

/* Mobile optimization - fewer snowflakes on small screens */
@media (max-width: 768px) {
    .snowflake:nth-child(n+31) {
        display: none;
    }
}

/* Ensure header has relative positioning for snowfall container */
.page_header {
    position: relative;
}