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rotate(360deg);opacity:0}}@keyframes driftDown{0%{transform:translateY(-20px) rotate(0);opacity:0}10%{opacity:.8}90%{opacity:.8}to{transform:translateY(120vh) rotate(360deg);opacity:0}}@keyframes driftSide{0%{transform:translate(-50px) translateY(0);opacity:0}10%{opacity:.8}90%{opacity:.8}to{transform:translate(120vw) translateY(10vh);opacity:0}}@keyframes pulseFog{0%{opacity:.1}to{opacity:.3}}.leaves .particle{background-color:#4ade80;border-radius:0 50% 50%;animation:driftDown var(--duration) linear infinite;top:-20px;bottom:auto}.snow .particle{background-color:#fff;animation:driftDown var(--duration) linear infinite;top:-20px;bottom:auto}.bubbles .particle{border:2px solid rgba(255,255,255,.5);background:#ffffff1a;animation:floatUp var(--duration) ease-in infinite}.sand .particle{background-color:#fca311;width:calc(var(--size) / 2);height:calc(var(--size) / 2);animation:driftSide var(--duration) linear infinite;left:-20px;top:calc(var(--left))}.embers .particle{background-color:#ff5400;width:calc(var(--size) / 2);height:calc(var(--size) / 2);animation:floatUp var(--duration) ease-in infinite}.fireflies .particle{background-color:#cddc39;width:5px;height:5px;animation:floatUp var(--duration) ease-in-out infinite alternate}.neon .particle{background:transparent;border:2px solid #f72585;border-radius:0;animation:driftDown var(--duration) linear infinite;top:-20px;bottom:auto}.stars .particle{background-color:#fff;width:3px;height:3px;animation:floatUp var(--duration) linear infinite}.fog .overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(circle,transparent 20%,rgba(200,200,200,.2) 100%);animation:pulseFog 4s infinite alternate}.fog .particle{display:none}.clouds .particle{background:#fff3;border-radius:50%;width:calc(var(--size) * 4);height:calc(var(--size) * 2);animation:driftSide var(--duration) linear infinite;left:-150px;top:calc(var(--left))}.sparkles .particle{background-color:#f472b6;width:4px;height:4px;animation:floatUp var(--duration) ease-in-out infinite}.matrix .particle{color:#0f0;font-family:monospace;font-size:var(--size);background:none;border-radius:0;animation:driftDown var(--duration) linear infinite;top:-50px;bottom:auto}.spores .particle{background-color:#39ff14;width:calc(var(--size) * .8);height:calc(var(--size) * .8);animation:floatUp var(--duration) ease-in-out infinite;border-radius:30% 70% 70% 30%/30% 30% 70% 70%}