Jellyfin-Seasonals-Plugin/Jellyfin.Plugin.Seasonals/Web/spring.css

.spring-container {
    display: block;
    position: fixed;
    overflow: hidden;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    pointer-events: none;
    z-index: 1000; 
    contain: layout paint;
}

/* Pollen */
.spring-pollen {
    position: fixed;
    z-index: 14;
    background-color: #fffacd; 
    border-radius: 50%;
    opacity: 0.6;
    box-shadow: 0 0 4px rgba(255, 250, 205, 0.4);
    
    will-change: transform;
    animation-name: spring-float;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
}

/* Sunbeams */
.spring-sunbeam {
    position: fixed;
    top: -50%;
    height: 200%;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0), rgba(255, 255, 200, 0.08) 50%, rgba(255, 255, 255, 0));
    z-index: 5; 
    transform-origin: top center;
    pointer-events: none;
    opacity: 0; 
}

/* Grass Container (Wrapper) */
.spring-grass-container {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 80px; 
    pointer-events: none;
    transform-origin: bottom;
}

/* Grass Overlayer */
.spring-grass {
    position: absolute;
    bottom: 0;
    width: 3px; 
    border-radius: 100% 0 0 0; 
    transform-origin: bottom center;
    background-color: #4caf50;
    
    will-change: transform;
    animation-name: spring-grass-sway;
    animation-timing-function: ease-in-out;
    animation-iteration-count: infinite;
}

@keyframes spring-grass-sway {
    0% { transform: rotate(0deg); }
    50% { transform: rotate(8deg); }
    100% { transform: rotate(0deg); }
}

/* SVG Meadow Layer */
.spring-meadow-layer {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    animation: spring-grow-meadow 3s cubic-bezier(0.1, 0.8, 0.2, 1) forwards;
}

.spring-meadow {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

@keyframes spring-grow-meadow {
    0%   { transform: translateY(100%); opacity: 0; }
    100% { transform: translateY(0); opacity: 0.95; }
}

.spring-sway {
    transform-origin: bottom center;
    animation: spring-meadow-sway 4s ease-in-out infinite alternate;
}

@keyframes spring-meadow-sway {
    0%   { transform: skewX(-2deg); }
    100% { transform: skewX(2deg); }
}

/* Birds */
.spring-bird {
    position: static !important; 
    display: block;
    z-index: 1001;
    /* MARK: BIRD SIZE */
    width: 80px; 
    height: auto;
    will-change: transform;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
}

/* Butterflies */
.spring-butterfly {
    position: static !important;
    display: block;
    z-index: 1001;
    /* MARK: BUTTERFLY SIZE */
    width: 40px; 
    height: auto;
    will-change: transform;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
}

/* Bee */
.spring-bee {
    position: static !important;
    display: block;
    z-index: 1001;
    /* MARK: BEE SIZE */
    width: 30px; 
    height: auto;
    will-change: transform;
}

/* Ladybug */
.spring-ladybug-gif {
    position: static !important;
    display: block;
    /* MARK: LADYBUG SIZE */
    width: 30px; 
    height: auto;
    will-change: transform;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
    --bug-rotation: -55deg;
}

.spring-ladybug-wrapper {
    z-index: 1002;
}

.spring-anim-wrapper {
    position: fixed;
    z-index: 1001;
    will-change: transform;
    top: 0; left: 0;
}

.spring-align-y {
    width: 100%; height: 100%;
    will-change: transform;
}

.spring-mirror-wrapper {
    width: 100%; height: 100%;
    will-change: transform;
    transform-origin: center;
}


@keyframes spring-float {
    0% { transform: translateX(0) translateY(0); }
    25% { transform: translateX(20px) translateY(-10px); }
    50% { transform: translateX(40px) translateY(0); }
    75% { transform: translateX(20px) translateY(10px); }
    100% { transform: translateX(0) translateY(0); }
}

@keyframes spring-beam-pulse {
    0% { opacity: 0; transform: rotate(var(--beam-rotation, 45deg)) scaleX(0.8); }
    50% { opacity: 0.6; transform: rotate(var(--beam-rotation, 45deg)) scaleX(1.2); }
    100% { opacity: 0; transform: rotate(var(--beam-rotation, 45deg)) scaleX(0.8); }
}



/* Wrapper animations (Flight across screen) */
@keyframes spring-fly-right-wrapper {
    0% { transform: translateX(-10vw); }
    100% { transform: translateX(110vw); }
}

@keyframes spring-fly-left-wrapper {
    0% { transform: translateX(110vw); }
    100% { transform: translateX(-10vw); }
}

/* Vertical Drift for Sloped Flight */
@keyframes spring-vertical-drift {
    0% { transform: translateY(var(--start-y, 10vh)); }
    100% { transform: translateY(var(--end-y, 10vh)); }
}

/* Inner animations (Bobbing/Fluttering) */
@keyframes spring-bob {
    0% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0); }
}

@keyframes spring-flutter {
    0% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-5px) rotate(5deg); }
    50% { transform: translateY(0) rotate(0deg); }
    75% { transform: translateY(5px) rotate(-5deg); }
    100% { transform: translateY(0) rotate(0deg); }
}

/* Bee Buzz */
@keyframes spring-buzz {
    0% { transform: translate(0, 0); }
    25% { transform: translate(2px, -2px); }
    50% { transform: translate(0, 2px); }
    75% { transform: translate(-2px, -2px); }
    100% { transform: translate(0, 0); }
}

/* Ladybug Walk (Wrapper handles X) */
@keyframes spring-walk-right {
    0% { transform: translateX(-10vw); }
    100% { transform: translateX(110vw); }
}

@keyframes spring-walk-left {
    0% { transform: translateX(110vw); }
    100% { transform: translateX(-10vw); }
}

/* Ladybug Crawl (Inner Wobble) */
@keyframes spring-crawl {
    0% { transform: translateY(0) rotate(var(--bug-rotation, 0deg)); }
    25% { transform: translateY(-3px) rotate(calc(var(--bug-rotation, 0deg) + 8deg)); }
    50% { transform: translateY(0) rotate(var(--bug-rotation, 0deg)); }
    75% { transform: translateY(-3px) rotate(calc(var(--bug-rotation, 0deg) - 8deg)); }
    100% { transform: translateY(0) rotate(var(--bug-rotation, 0deg)); }
}