Enhance CSS animations and performance across seasonal styles; add will-change property for smoother transitions and optimize keyframes. [skip ci]

Jellyfin.Plugin.Seasonals/Web/autumn.css

@@ -21,15 +21,7 @@
   color: #fff;
   font-family: Arial, sans-serif;
   text-shadow: 0 0 5px #000;
-  user-select: none;
+  user-select: none;
-  -webkit-user-select: none;
-  cursor: default;
-  -webkit-animation-name: leaf-fall, leaf-shake;
-  -webkit-animation-duration: 7s, 4s;
-  -webkit-animation-timing-function: linear, ease-in-out;
-  -webkit-animation-iteration-count: infinite, infinite;
-  -webkit-user-select: none;
-  animation-name: leaf-fall, leaf-shake;
   cursor: default;
   animation-name: leaf-fall, leaf-shake;
   animation-duration: 7s, 4s;
@@ -41,15 +33,6 @@
 .no-rotation {
   --rotate-start: 0deg !important;
   --rotate-end: 0deg !important;
-@-webkit-keyframes leaf-fall {
-  0% {
-    translate: 0 -10vh;
-  }
-
-  100% {
-    translate: 0 100vh;
-  }
-}
 }
 
 
@@ -61,14 +44,6 @@
   100% {
     translate: 0 100vh;
   }
-@-webkit-keyframes leaf-shake {
-  0%, 100% {
-    transform: translateX(0) rotate(var(--rotate-start, -20deg));
-  }
-  50% {
-    transform: translateX(80px) rotate(var(--rotate-end, 20deg));
-  }
-}
 }
 
 

Jellyfin.Plugin.Seasonals/Web/birthday.css

@@ -8,9 +8,11 @@
     z-index: 9999;
     overflow: hidden;
     contain: strict;
+    contain: layout paint;
 }
 
 .birthday-symbol {
+    will-change: opacity;
     position: fixed;
     top: 0;
     left: 0;
@@ -29,7 +31,7 @@
 }
 
 .birthday-inner {
-    pointer-events: auto; /* Allow hover over the actual item */
+    pointer-events: auto;
     cursor: crosshair;
     display: inline-block;
 }
@@ -138,7 +140,7 @@
         opacity: 1;
     }
     100% {
-        transform: translateY(calc(var(--burst-y) + 150px)); /* Gravity pull downwards */
+        transform: translateY(calc(var(--burst-y) + 150px));
         opacity: 0;
     }
 }

Jellyfin.Plugin.Seasonals/Web/birthday.js

@@ -228,7 +228,19 @@ function createBirthday() {
                     // Ensure the burst container is appended to the main document body or the birthday container
                     createBalloonPopConfetti(document.body, cx, cy, balloonColors[randomItem]);
                 }
-            }, { once: true });
+            });
+
+            // Reset the balloon when it reappears at the bottom of the screen
+            symbol.addEventListener('animationiteration', function(e) {
+                // Ignore bubbling events from the inner sway animation
+                if (e.animationName === 'birthday-rise' || e.target === symbol) {
+                    if (innerDiv.classList.contains('popped')) {
+                        innerDiv.classList.remove('popped');
+                        innerDiv.style.animation = '';
+                        innerDiv.style.pointerEvents = 'auto';
+                    }
+                }
+            });
         }
 
         const startRot = (Math.random() * 20) - 10; // -10 to +10 spread

Jellyfin.Plugin.Seasonals/Web/christmas.css

@@ -22,39 +22,13 @@
   font-family: Arial, sans-serif;
   text-shadow: 0 0 5px #000;
   user-select: none;
-  cursor: default;
+  cursor: default;
-  -webkit-user-select: none;
-  -webkit-animation-name: christmas-fall, christmas-shake;
-  -webkit-animation-duration: 10s, 3s;
-  -webkit-animation-timing-function: linear, ease-in-out;
-  -webkit-animation-iteration-count: infinite, infinite;
-  animation-name: christmas-fall, christmas-shake;
   animation-name: christmas-fall, christmas-shake;
   animation-duration: 10s, 3s;
   animation-timing-function: linear, ease-in-out;
   animation-iteration-count: infinite, infinite;
 }
-@-webkit-keyframes christmas-fall {
-  0% {
-    translate: 0 -10vh;
-  }
 
-  100% {
-    translate: 0 110vh;
-  }
-}
-
-@-webkit-keyframes christmas-shake {
-
-  0%,
-  100% {
-    transform: translateX(0);
-  }
-
-  50% {
-    transform: translateX(80px);
-  }
-}
 
 
 @keyframes christmas-fall {

Jellyfin.Plugin.Seasonals/Web/earthday.css

@@ -7,9 +7,11 @@
     pointer-events: none;
     z-index: 1000;
     overflow: hidden;
+    contain: layout paint;
 }
 
 .earthday-meadow {
+    will-change: transform;
     position: absolute;
     bottom: 0;
     left: 0;
@@ -25,6 +27,7 @@
 }
 
 .earthday-sway {
+    will-change: transform;
     transform-origin: bottom center;
     animation: sway-grass 4s ease-in-out infinite alternate;
 }

Jellyfin.Plugin.Seasonals/Web/easter.css

@@ -9,6 +9,7 @@
     z-index: 10000;
     contain: strict;
     overflow: hidden;
+    contain: layout paint;
 }
 
 .easter-grass-container {
@@ -38,6 +39,7 @@
 
 /* sway */
 .easter-sway {
+    will-change: transform;
     transform-origin: bottom center;
     animation: easter-wind-sway 6s ease-in-out infinite alternate;
 }

Jellyfin.Plugin.Seasonals/Web/eid.css

@@ -9,6 +9,7 @@
     z-index: 10;
     contain: strict;
     overflow: hidden;
+    contain: layout paint;
 }
 
 .eid-symbol {
@@ -18,12 +19,14 @@
 }
 
 .eid-symbol.floating-star {
+    will-change: opacity;
     opacity: 0;
     animation: eid-twinkle 4s ease-in-out infinite;
     mix-blend-mode: screen;
 }
 
 .lantern-rope {
+    will-change: transform;
     position: absolute;
     top: 0;
     width: 2px;

Jellyfin.Plugin.Seasonals/Web/filmnoir.css

@@ -22,8 +22,9 @@
 
 /* Film grain */
 .filmnoir-grain {
+    will-change: transform, opacity;
     position: absolute;
-    top: -50%;
+    top: 0;
     left: -50%;
     width: 200%;
     height: 200%;
@@ -32,6 +33,7 @@
     pointer-events: none;
     mix-blend-mode: overlay;
     opacity: 0.3;
+    translate: 0 -50vh;
 }
 
 /* Vignette */
@@ -48,6 +50,7 @@
 
 /* Occasional flicker and scratch */
 .filmnoir-scratches {
+    will-change: opacity;
     position: absolute;
     top: 0;
     left: 0;

Jellyfin.Plugin.Seasonals/Web/fireworks.css

@@ -11,9 +11,10 @@
 }
 
 .rocket-trail {
+  will-change: transform;
   position: absolute;
   left: var(--trailX);
-  top: var(--trailStartY);
+  top: 0;
   width: 4px;
 
   /* activate the following for rocket trail */
@@ -28,6 +29,7 @@
   box-shadow: 0 0 8px 2px white;*/
 
   animation: rocket-trail-animation 1s linear forwards;
+  translate: 0 var(--trailStartY);
 }
 
 @keyframes rocket-trail-animation {
@@ -56,6 +58,7 @@
 }
 
 .firework {
+  will-change: transform;
   position: absolute;
   width: 5px;
   height: 5px;

Jellyfin.Plugin.Seasonals/Web/frost.css

@@ -9,16 +9,17 @@
     z-index: 10;
     overflow: hidden;
     contain: strict;
+    contain: layout paint;
 }
 
 .frost-layer {
+    will-change: transform;
     position: absolute;
     top: 0;
     left: 0;
     width: 100%;
     height: 100%;
     pointer-events: none;
-    /* A glowing white-blue gradient from edges */
     background: radial-gradient(ellipse at center, transparent 60%, rgba(180, 220, 255, 0.4) 100%);
     box-shadow: inset 0 0 60px rgba(200, 230, 255, 0.5), inset 0 0 120px rgba(255, 255, 255, 0.3);
     
@@ -27,14 +28,13 @@
     animation: frost-creep 4s ease-out forwards;
 }
 
-/* Subtle repeating star/crystal pattern */
 .frost-crystals {
+    will-change: transform;
     position: absolute;
-    top: -5%;
+    top: 0;
     left: -5%;
     width: 110%;
     height: 110%;
-    /* Use multi-layered star patterns for a random, crystalline spread */
     background-image: 
         url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="60" height="60"><circle cx="10" cy="10" r="1.5" fill="rgba(255,255,255,0.2)"/><circle cx="40" cy="30" r="1" fill="rgba(255,255,255,0.15)"/><circle cx="20" cy="50" r="2" fill="rgba(255,255,255,0.1)"/><path d="M50 10 L51 15 L56 16 L51 17 L50 22 L49 17 L44 16 L49 15 Z" fill="rgba(255,255,255,0.2)"/></svg>'),
         url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="40" height="40"><circle cx="5" cy="20" r="1" fill="rgba(255,255,255,0.15)"/><circle cx="25" cy="5" r="1.5" fill="rgba(255,255,255,0.1)"/><path d="M20 20 L21 23 L24 24 L21 25 L20 28 L19 25 L16 24 L19 23 Z" fill="rgba(255,255,255,0.15)"/></svg>'),
@@ -43,12 +43,9 @@
     background-size: 110px 110px, 60px 60px, 30px 30px;
     background-position: 0 0, 15px 15px, 5px 10px;
     mix-blend-mode: overlay;
-    
-    /* Mask out the center so crystals only appear strongly on the edges */
-    -webkit-mask-image: radial-gradient(ellipse at center, transparent 50%, black 100%);
     mask-image: radial-gradient(ellipse at center, transparent 50%, black 100%);
-    
     animation: frost-shimmer 6s infinite alternate ease-in-out;
+    translate: 0 -5vh;
 }
 
 @keyframes frost-creep {

Jellyfin.Plugin.Seasonals/Web/halloween.css

@@ -12,20 +12,12 @@
 }
 
 .halloween {
+    will-change: transform;
     position: fixed;
     bottom: -10%;
     z-index: 15;
-    -webkit-user-select: none;
-    -moz-user-select: none;
-    -ms-user-select: none;
     user-select: none;
-    -webkit-user-select: none;
     cursor: default;
-    -webkit-animation-name: halloween-fall, halloween-shake;
-    -webkit-animation-duration: 10s, 3s;
-    -webkit-animation-timing-function: linear, ease-in-out;
-    -webkit-animation-iteration-count: infinite, infinite;
-    -webkit-animation-play-state: running, running;
     animation-name: halloween-fall, halloween-shake;
     animation-duration: 10s, 3s;
     animation-timing-function: linear, ease-in-out;
@@ -33,29 +25,7 @@
     animation-play-state: running, running
 }
 
-@-webkit-keyframes halloween-fall {
-    0% {
-        bottom: -10%;
-    }
 
-    100% {
-        bottom: 110%;
-    }
-}
-
-@-webkit-keyframes halloween-shake {
-
-    0%,
-    100% {
-        -webkit-transform: translateX(0);
-        transform: translateX(0)
-    }
-
-    50% {
-        -webkit-transform: translateX(80px);
-        transform: translateX(80px)
-    }
-}
 
 @keyframes halloween-fall {
     0% {
@@ -81,73 +51,61 @@
 
 .halloween:nth-of-type(0) {
     left: 1%;
-    -webkit-animation-delay: 0s, 0s;
     animation-delay: 0s, 0s;
 }
 
 .halloween:nth-of-type(1) {
     left: 10%;
-    -webkit-animation-delay: -1s, -1s;
     animation-delay: -1s, -1s;
 }
 
 .halloween:nth-of-type(2) {
     left: 20%;
-    -webkit-animation-delay: -2s, -2s;
     animation-delay: -2s, -2s;
 }
 
 .halloween:nth-of-type(3) {
     left: 30%;
-    -webkit-animation-delay: -3s, -3s;
     animation-delay: -3s, -3s;
 }
 
 .halloween:nth-of-type(4) {
     left: 40%;
-    -webkit-animation-delay: -4s, -4s;
     animation-delay: -4s, -4s;
 }
 
 .halloween:nth-of-type(5) {
     left: 50%;
-    -webkit-animation-delay: -5s, -5s;
     animation-delay: -5s, -5s;
 }
 
 .halloween:nth-of-type(6) {
     left: 60%;
-    -webkit-animation-delay: -6s, -6s;
     animation-delay: -6s, -6s;
 }
 
 .halloween:nth-of-type(7) {
     left: 70%;
-    -webkit-animation-delay: -7s, -7s;
     animation-delay: -7s, -7s;
 }
 
 .halloween:nth-of-type(8) {
     left: 80%;
-    -webkit-animation-delay: -8s, -8s;
     animation-delay: -8s, -8s;
 }
 
 .halloween:nth-of-type(9) {
     left: 90%;
-    -webkit-animation-delay: -9s, -9s;
     animation-delay: -9s, -9s;
 }
 
 .halloween:nth-of-type(10) {
     left: 25%;
-    -webkit-animation-delay: -10s, -10s;
     animation-delay: -10s, -10s;
 }
 
 .halloween:nth-of-type(11) {
     left: 65%;
-    -webkit-animation-delay: -11s, -11s;
     animation-delay: -11s, -11s;
 }
 
@@ -162,7 +120,6 @@
     z-index: 1000;
     overflow: hidden;
     mask-image: linear-gradient(to top, black, transparent);
-    -webkit-mask-image: linear-gradient(to top, black, transparent);
 }
 .halloween-fog-blob {
     position: absolute;
@@ -174,10 +131,12 @@
     filter: blur(15px);
 }
 .halloween-fog-blob:nth-child(1) {
+    will-change: transform;
     left: -20vw;
     animation: fog-float1 25s ease-in-out infinite alternate;
 }
 .halloween-fog-blob:nth-child(2) {
+    will-change: transform;
     left: -50vw;
     background: radial-gradient(ellipse at center, rgba(100, 110, 120, 0.3) 0%, transparent 65%);
     animation: fog-float2 35s ease-in-out infinite alternate;
@@ -196,7 +155,7 @@
 /* --- Spiders --- */
 .halloween-spider-wrapper {
     position: absolute;
-    top: -50px;
+    top: 0;
     display: flex;
     flex-direction: column;
     align-items: center;
@@ -204,8 +163,10 @@
     transform-origin: top;
     will-change: transform;
     pointer-events: auto;
-    padding: 20px; /* Increase hit area safely */
+    padding: 20px; /* Increase hit area */
+   translate: 0 -50px;
 }
+
 .halloween-thread {
     width: 30px; /* Wider hit area for mouse interaction */
     height: 100vh;
@@ -223,12 +184,12 @@
     background: linear-gradient(to bottom, rgba(200, 200, 200, 0.1), rgba(200, 200, 200, 0.6));
 }
 .halloween-spider {
+    will-change: transform;
     animation: spider-swing 3s ease-in-out infinite alternate;
     transform-origin: top center;
 }
 
 /* MARK: SPIDER SWAY CONFIGURATION */
-/* Adjust degrees in 'rotate(...)' to change how far spider and thread swing in wind. */
 @keyframes wind-sway {
     0% { transform: rotate(0deg); }
     25% { transform: rotate(2deg); }

Jellyfin.Plugin.Seasonals/Web/hearts.css

@@ -12,48 +12,21 @@
 }
 
 .heart {
+    will-change: transform;
     position: fixed;
     bottom: -10%;
     z-index: 15;
-    -webkit-user-select: none;
     -moz-user-select: none;
     -ms-user-select: none;
     user-select: none;
-    -webkit-user-select: none;
     cursor: default;
-    -webkit-animation-name: heart-fall, heart-shake;
-    -webkit-animation-duration: 14s, 5s;
-    -webkit-animation-timing-function: linear, ease-in-out;
-    -webkit-animation-iteration-count: infinite, infinite;
     animation-name: heart-fall, heart-shake;
     animation-duration: 14s, 5s;
     animation-timing-function: linear, ease-in-out;
     animation-iteration-count: infinite, infinite;
 }
 
-@-webkit-keyframes heart-fall {
-    0% {
-        bottom: -10%;
-    }
 
-    100% {
-        bottom: 110%;
-    }
-}
-
-@-webkit-keyframes heart-shake {
-
-    0%,
-    100% {
-        -webkit-transform: translateX(0);
-        transform: translateX(0)
-    }
-
-    50% {
-        -webkit-transform: translateX(80px);
-        transform: translateX(80px)
-    }
-}
 
 @keyframes heart-fall {
     0% {
@@ -79,72 +52,60 @@
 
 .heart:nth-of-type(0) {
     left: 1%;
-    -webkit-animation-delay: 0s, 0s;
     animation-delay: 0s, 0s
 }
 
 .heart:nth-of-type(1) {
     left: 10%;
-    -webkit-animation-delay: 1s, 1s;
     animation-delay: 1s, 1s
 }
 
 .heart:nth-of-type(2) {
     left: 20%;
-    -webkit-animation-delay: 6s, .5s;
     animation-delay: 6s, .5s
 }
 
 .heart:nth-of-type(3) {
     left: 30%;
-    -webkit-animation-delay: 4s, 2s;
     animation-delay: 4s, 2s
 }
 
 .heart:nth-of-type(4) {
     left: 40%;
-    -webkit-animation-delay: 2s, 2s;
     animation-delay: 2s, 2s
 }
 
 .heart:nth-of-type(5) {
     left: 50%;
-    -webkit-animation-delay: 8s, 3s;
     animation-delay: 8s, 3s
 }
 
 .heart:nth-of-type(6) {
     left: 60%;
-    -webkit-animation-delay: 6s, 2s;
     animation-delay: 6s, 2s
 }
 
 .heart:nth-of-type(7) {
     left: 70%;
-    -webkit-animation-delay: 2.5s, 1s;
     animation-delay: 2.5s, 1s
 }
 
 .heart:nth-of-type(8) {
     left: 80%;
-    -webkit-animation-delay: 1s, 0s;
     animation-delay: 1s, 0s
 }
 
 .heart:nth-of-type(9) {
     left: 90%;
-    -webkit-animation-delay: 3s, 1.5s;
     animation-delay: 3s, 1.5s
 }
 
 .heart:nth-of-type(10) {
     left: 25%;
-    -webkit-animation-delay: 2s, 0s;
     animation-delay: 2s, 0s
 }
 
 .heart:nth-of-type(11) {
     left: 65%;
-    -webkit-animation-delay: 4s, 2.5s;
     animation-delay: 4s, 2.5s
 }

Jellyfin.Plugin.Seasonals/Web/marioday.css

@@ -29,11 +29,13 @@
 }
 
 .mario-jump {
+    will-change: transform;
     animation: jump-arc 0.8s ease-in-out;
 }
 
 /* 8-bit coin styling */
 .mario-coin {
+    will-change: transform;
     position: absolute;
     width: 32px;
     height: 32px;
@@ -47,11 +49,12 @@
 .mario-coin::after {
     content: '';
     position: absolute;
-    top: 6px;
+    top: 0;
     left: 10px;
     width: 4px;
     height: 12px;
     background: #daa520;
+    translate: 0 6px;
 }
 
 @keyframes mario-run {

Jellyfin.Plugin.Seasonals/Web/oktoberfest.css

@@ -12,13 +12,15 @@
 }
 
 .oktoberfest-symbol {
+    will-change: transform;
     position: absolute;
-    top: -10%;
+    top: 0;
     font-size: 2.2em;
     user-select: none;
     animation-name: oktoberfest-fall, oktoberfest-sway;
     animation-timing-function: linear, ease-in-out;
     animation-iteration-count: infinite, infinite;
+    translate: 0 -10vh;
 }
 
 @keyframes oktoberfest-fall {