fix: button hover animations — PDF 45°, wiggle for info/keyboard/bot

static/css/04-interactive/_chat.css

@@ -38,8 +38,7 @@
 }
 
 .chat-toggle-btn:hover iconify-icon {
-    transform: rotate(90deg);
-    transition: transform 0.3s ease;
+    animation: iconWiggle 0.5s ease;
 }
 
 /* Icon swap: show mascot by default, close when active */

static/css/04-interactive/_scroll-behavior.css

@@ -142,16 +142,21 @@
     transition: transform 0.3s ease;
 }
 
-/* Rotate clockwise: PDF, leaf, info, theme, chat close */
-.download-btn:hover iconify-icon,
+/* Rotate 45°: PDF */
+.download-btn:hover iconify-icon {
+    transform: rotate(45deg);
+}
+
+/* Rotate 90°: leaf, theme */
 .print-friendly-btn:hover iconify-icon,
-.info-button:hover iconify-icon,
 .color-theme-switcher:hover iconify-icon {
     transform: rotate(90deg);
 }
 
-/* Wiggle: email envelope */
-.fixed-btn.contact-btn:hover iconify-icon {
+/* Wiggle: email, info, keyboard, chat bot */
+.fixed-btn.contact-btn:hover iconify-icon,
+.info-button:hover iconify-icon,
+.shortcuts-btn:hover iconify-icon {
     animation: iconWiggle 0.5s ease;
 }
 
@@ -164,17 +169,6 @@
     100% { transform: rotate(0deg); }
 }
 
-/* Scale pulse: keyboard */
-.shortcuts-btn:hover iconify-icon {
-    animation: iconPulse 0.4s ease;
-}
-
-@keyframes iconPulse {
-    0%   { transform: scale(1); }
-    50%  { transform: scale(1.25); }
-    100% { transform: scale(1); }
-}
-
 /* Bounce up: back-to-top arrow */
 .back-to-top:hover iconify-icon {
     animation: iconBounceUp 0.4s ease;