Add GSAP scroll-reveal animations (self-hosted, respects reduced motion)

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LSDgjk1Agjy9Z2UH2n8bc3

animations.js

@@ -0,0 +1,45 @@
+/* CycleWise AU - scroll animations (Step 1).
+   Purely cosmetic: if GSAP fails to load or the visitor prefers reduced
+   motion, this file does nothing and the page looks exactly as before. */
+(function(){
+  "use strict";
+  if (!window.gsap || !window.ScrollTrigger) return;
+  if (window.matchMedia("(prefers-reduced-motion: reduce)").matches) return;
+
+  gsap.registerPlugin(ScrollTrigger);
+
+  var done = new WeakSet();
+
+  function reveal(panel){
+    if (!panel || done.has(panel)) return;
+    done.add(panel);
+
+    // Top of the tab: hero text and picture fade up one after another.
+    gsap.from(panel.querySelectorAll(".hero > *"), {
+      opacity: 0, y: 24, duration: 0.7, stagger: 0.12, ease: "power2.out",
+      clearProps: "all"
+    });
+
+    // Everything below: fade up when it scrolls into view.
+    panel.querySelectorAll(
+      ".ref-heading, .ref-grid, .timeline, .week-panel, .filmstrip, .cal-card, .detail-card"
+    ).forEach(function(el){
+      gsap.from(el, {
+        opacity: 0, y: 32, duration: 0.7, ease: "power2.out",
+        clearProps: "all",
+        scrollTrigger: { trigger: el, start: "top 88%", once: true }
+      });
+    });
+  }
+
+  function activePanel(){ return document.querySelector(".mode-panel.active"); }
+
+  reveal(activePanel());
+
+  document.querySelectorAll(".mode-btn").forEach(function(btn){
+    btn.addEventListener("click", function(){
+      // Wait one tick so the page's own code switches the tab first.
+      setTimeout(function(){ reveal(activePanel()); ScrollTrigger.refresh(); }, 0);
+    });
+  });
+})();

index.html

@@ -1061,3 +1061,6 @@ footer.note{
   renderAll();
 })();
 </script>
+<script src="vendor/gsap.min.js"></script>
+<script src="vendor/ScrollTrigger.min.js"></script>
+<script src="animations.js"></script>

vendor/ScrollTrigger.min.js

@@ -0,0 +1,11 @@
+/*!
+ * ScrollTrigger 3.12.5
+ * https://gsap.com
+ * 
+ * @license Copyright 2024, GreenSock. All rights reserved.
+ * Subject to the terms at https://gsap.com/standard-license or for Club GSAP members, the agreement issued with that membership.
+ * @author: Jack Doyle, jack@greensock.com
+ */
+
+!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports):"function"==typeof define&&define.amd?define(["exports"],t):t((e=e||self).window=e.window||{})}(this,function(e){"use strict";function _defineProperties(e,t){for(var r=0;r<t.length;r++){var n=t[r];n.enumerable=n.enumerable||!1,n.configurable=!0,"value"in n&&(n.writable=!0),Object.defineProperty(e,n.key,n)}}function r(){return Ce||"undefined"!=typeof window&&(Ce=window.gsap)&&Ce.registerPlugin&&Ce}function z(e,t){return~Le.indexOf(e)&&Le[Le.indexOf(e)+1][t]}function A(e){return!!~t.indexOf(e)}function B(e,t,r,n,o){return e.addEventListener(t,r,{passive:!1!==n,capture:!!o})}function C(e,t,r,n){return e.removeEventListener(t,r,!!n)}function F(){return De&&De.isPressed||Ie.cache++}function G(r,n){function dd(e){if(e||0===e){o&&(Se.history.scrollRestoration="manual");var 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+

vendor/gsap.min.js

@@ -0,0 +1,11 @@
+/*!
+ * GSAP 3.12.5
+ * https://gsap.com
+ * 
+ * @license Copyright 2024, GreenSock. All rights reserved.
+ * Subject to the terms at https://gsap.com/standard-license or for Club GSAP members, the agreement issued with that membership.
+ * @author: Jack Doyle, jack@greensock.com
+ */
+
+!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports):"function"==typeof define&&define.amd?define(["exports"],e):e((t=t||self).window=t.window||{})}(this,function(e){"use strict";function _inheritsLoose(t,e){t.prototype=Object.create(e.prototype),(t.prototype.constructor=t).__proto__=e}function _assertThisInitialized(t){if(void 0===t)throw new ReferenceError("this hasn't been initialised - super() hasn't been called");return t}function r(t){return"string"==typeof t}function s(t){return"function"==typeof t}function t(t){return"number"==typeof t}function u(t){return void 0===t}function v(t){return"object"==typeof t}function w(t){return!1!==t}function x(){return"undefined"!=typeof window}function y(t){return s(t)||r(t)}function P(t){return(i=yt(t,ot))&&ze}function Q(t,e){return console.warn("Invalid property",t,"set to",e,"Missing plugin? gsap.registerPlugin()")}function R(t,e){return!e&&console.warn(t)}function S(t,e){return 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+