From 511d415b4ec07d435ea73ab8e5421949392d922d Mon Sep 17 00:00:00 2001
From: Adam Malczewski <github@tradam.dev>
Date: Wed, 21 Oct 2026 21:25:57 +0900
Subject: feat(tabs): 0.1s phases; ease-in close, ease-in-out move, ease-out
 open

---
 src/features/tabs/ui/tab-flip.ts | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

(limited to 'src/features/tabs/ui')

diff --git a/src/features/tabs/ui/tab-flip.ts b/src/features/tabs/ui/tab-flip.ts
index 53bef75..2de00ab 100644
--- a/src/features/tabs/ui/tab-flip.ts
+++ b/src/features/tabs/ui/tab-flip.ts
@@ -35,11 +35,15 @@ export interface TabFlip {
   play(): void;
 }
 
-const SHRINK = 0.05;
-const MOVE = 0.075;
-const GROW = 0.05;
-const SIZE_EASE = "power2.inOut";
-const MOVE_EASE = "power3.out";
+const SHRINK = 0.1;
+const MOVE = 0.1;
+const GROW = 0.1;
+/** Close: starts slow, finishes fast (accelerates away). */
+const SHRINK_EASE = "power2.in";
+/** Move: slow → fast → slow. */
+const MOVE_EASE = "power2.inOut";
+/** Open: starts fast, settles slowly (the mirror of close). */
+const GROW_EASE = "power2.out";
 const GHOST_ATTR = "data-tab-ghost";
 /** Fully clipped from the bottom edge up / fully revealed. */
 const CLIP_HIDDEN = "inset(0% 0% 100% 0%)";
@@ -103,7 +107,7 @@ export function createTabFlip(getScroller: () => HTMLElement | undefined): TabFl
             clipPath: CLIP_SHOWN,
             duration: GROW,
             delay: growAt,
-            ease: SIZE_EASE,
+            ease: GROW_EASE,
             clearProps: "clipPath",
           },
         );
@@ -211,7 +215,7 @@ function spawnGhost(scroller: HTMLElement, el: HTMLElement, isGroup: boolean): b
   gsap.to(ghost, {
     height: 0,
     duration: SHRINK,
-    ease: SIZE_EASE,
+    ease: SHRINK_EASE,
     onComplete: () => ghost.remove(),
   });
   return true;
-- 
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