Animated loader · deepseek-v4.1-flash

Let me check the current directory and the gsap file.

Let me build the index.html.

Design: dark background. A group of rounded geometric shapes (squares/rects with border-radius) that morph scale, position, corner radius. A row of five dots with staggered motion/opacity. GSAP timeline, repeat -1, duration 3-6s. Pause/Resume/Restart controls.

Let me write it.

Use gsap timeline with `repeat: -1`, `defaults: {ease: "power2.inOut"}`. Shapes: maybe 5 shapes arranged. Choreography: shapes move and rotate, border-radius changes.

For smooth loop without abrupt jump, make first and last states identical and use yoyo? Actually if first state == last state, repeat is seamless. I'll design each shape's timeline where the end equals start. Using a single timeline connecting from initial positions back.

Let me create shapes in a container. Each shape a div with class shape, with set CSS. GSAP animates x, y, scale, borderRadius.

For border radius via GSAP: `borderRadius: "50%"` works. Use px values maybe.

Dots: 5 dots, each stagger y and opacity. Since repeat -1 and stagger, the loop resets. To be seamless, use a repeating timeline where dots bob. Actually stagger within a repeating timeline: at the start dots at rest, each animates up and back. The reset to start is fine if each dot ends at rest. But stagger pattern: dot0 goes first... at end of timeline all rest. That's seamless.

Let me design timeline total 4.5s.

Shapes group:
- 3-4 shapes. Start arranged centered. Animate scale/position/radius.
- Shape A moves up-left etc.

Timeline with steps at fractions. Use keyframes? Simpler: multiple .to() calls.

Ensure end == start: I'll capture initial values and animate back at end. But easier to define explicit start positions in CSS and each shape returns.

Let me just write values.

Container 400x400. Shapes absolutely positioned, transform via gsap x/y.

Shape1: 90x90, top-left at some position, background color, borderRadius 50%.
Shape2: 70x70, etc.
Shape3: rounded rect.
Shape4: circle.

Maybe use SVG for true morph? Border-radius is fine and specified.

Timeline plan (4.5s):
- 0: shapes at base.
- phase1 (0-1.5s): shapes scale up/down, move apart, radius morph.
- phase2 (1.5-3s): rotate/move.
- phase3 (3-4.5s): return to base.
- dots over whole thing with stagger.

Let me write with explicit to() at positions. Use `gsap.timeline({repeat:-1, defaults:{ease:"power2.inOut"}})`. Set total via adding a dummy or use duration. Actually repeat with no repeatDelay. To make full sequence 4.5s, ensure last tween ends at 4.5.

I'll structure:
```
tl.to(shapes, {...}, 0)
  .to(...)
```
Let me just create a sequence.

I'll use per-shape tweens.

Base positions (container center at 0,0 with shapes centered using left/top 50% + margin). Simpler: container position relative 420x420, shapes position absolute centered via translate(-50%,-50%) with left/top 50%, then gsap x/y offsets.

CSS:
.shape { position:absolute; left:50%; top:50%; margin-left:-45px; margin-top:-45px; }
varying sizes... use each own via inline styles.

Actually let me use different left/top with transform translate(-50%,-50%), and gsap x/y for offsets. GSAP x/y adds transform, combined with translate(-50%,-50%)? gsap sets transform property, overriding. If I set left/top with translate in CSS, gsap's x/y writes `translate(x,y)` replacing? GSAP composes transform: it uses translate3d plus existing? By default gsap's transform includes x/y and will include translate(-50%,-50%) only if set via xPercent/yPercent. Better use xPercent:-50, yPercent:-50 via gsap.set, then x/y offsets.

So CSS positions each shape at left/top coordinates; gsap.set(shapes,{xPercent:-50,yPercent:-50}). Then animate x,y relative.

Let me define container 460x460.

Shapes:
1. square 100x100, color #ff6b6b, left 50% top 50%.
Actually let me place shapes at positions around center at base:
- s1: left:34% top:38%, 96px
- s2: left:66% top:38%, 72px
- s3: left:50% top:64%, 84px
- s4: left:20% top:68%, 56px
- s5: left:80% top:68%, 56px

Hmm "group of rounded geometric shapes". Let's do 4 shapes plus dots.

Let me code.

Timeline:
```
const tl = gsap.timeline({repeat:-1, defaults:{ease:'power2.inOut'}});
// t=0 base set
tl.to('#s1',{x:-40,y:-30,scale:1.35,rotation:45,borderRadius:'50%',duration:1.5},0)
  .to('#s2',{x:40,y:-30,scale:0.7,rotation:-45,borderRadius:'30%',duration:1.5},0)
  .to('#s3',{x:0,y:40,scale:1.2,rotation:20,borderRadius:'40%',duration:1.5},0)
  .to('#s4',{x:-30,y:10,scale:0.85,borderRadius:'50%',duration:1.5},0)
// phase 2 t=1.5
  .to('#s1',{x:30,y:20,scale:0.8,rotation:180,borderRadius:'20%',duration:1.5},1.5)
  ...
// phase3 return t=3
  .to(...base...,3)
```
Base values: x:0,y:0,scale:1,rotation:0,borderRadius original. Original border radius differs. I'll store. Simpler: give all shapes base borderRadius 24px? But circle needs 50%. Let me just set each shape's base radius via a dataset and animate to and back to explicit values.

I'll define base radii: s1 '24px', s2 '50%', s3 '30px', s4 '50%'.

End phase3 returns to those.

Dots: 5 dots, each animates y:-14 and opacity 1->0.4, staggered. Put in a separate timeline nested? For seamless loop, dot timeline should also be 4.5s. Use stagger with repeat? Better:
```
tl.to('.dot', {y:-16, scale:1.4, duration:0.45, stagger:{each:0.15, yoyo:true, repeat:1}, ease:'sine.inOut'}, 0)
```
Hmm yoyo with repeat 1 per dot means each dot goes up and back over 0.9s, staggered 0.15. But then all done by ~1.5s, rest 3s. That's fine but dots only move at start. Maybe better spread dots' motion throughout. Could use repeat on the dot tween across whole 4.5: `repeat:4, yoyo:true`? That gives each dot 5 up-downs but stagger relative.

Alternative: create dot pulse repeating via a nested timeline with repeat:-1 but that creates separate instances—requirement says "without a growing number of animation instances." Nested infinite timeline created once is fine, only one instance. But coordinating pause: child timelines pause with parent. Actually a child with repeat:-1 inside parent: parent's repeat -1 and child repeat -1 could get weird (child has its own duration). Better keep single timeline.

I'll spread dot animations at different times: each dot does a pulse at staggered offsets across the loop, and returns to rest. e.g. dot i pulses at t = i*0.4 within a 2s window, then again later? Let's just stagger all near start but make each pulse duration longer so staggered motion visible, and add a second wave.

Actually simpler and clearly visible: dots animate y up/down with stagger and repeat throughout using keyframes? Let me do:
```
tl.to('.dot', {keyframes:[{y:-14,opacity:1,duration:0.35},{y:0,opacity:0.45,duration:0.35}], stagger:0.18}, 0)
```
This plays wave at start. Then add another wave at 2.25s. That fills the loop and returns to rest. Good.

Total duration must be 4.5s. Last dot finishes: 4*0.18 + 0.7 = 1.42. Second wave at 2.25 ends 3.67. Fine, under 4.5. But timeline duration is determined by the max end time = phase3 shapes ending at 4.5. Good.

However on repeat, at t=4.5 shapes at base, dots at rest, then jumps to t=0 base — same => seamless.

But there's subtlety: repeat restarts and the dot at start is opacity 0.45 y 0. If I set initial CSS opacity 0.45 and y 0, consistent. Good.

Let me set dots initial opacity 0.45.

Controls: Pause/Resume toggle button, Restart button. Update button label. Use tl.pause(), tl.resume(), tl.restart().

Also expose timeline for testing maybe window.__tl.

Let me write file.

Colors: dark bg #0d1117, shapes: #ff6b6b (coral), #4ecdc4 (teal), #ffd93d (yellow), #a78bfa (purple). Dots #61dafb.

Add a subtle glow.

Let me write.

For borderRadius animation with gsap, string values fine.

Center composition: flex center body, container 460px. Also add title maybe. Keep visible at viewport.

Let me write the HTML.

Now let me test in browser. Reload and inspect console, sample timeline.

Initial state is good, centered. Now let me sample the timeline at various moments. Use inspect or motion. Let me pause at specific times using JS via browser? The browser tool doesn't have eval. But I can use inspect which may return DOM only. I can test by clicking and screenshots.

Let me use motion to see frames. Actually let me check timeline duration and states by injecting? No eval tool. I could add a temporary query param? Simpler: use browser motion action to capture frames over time.

Let me do motion.

The animation works: shapes change scale, position, corner radius; dots show staggered motion (frame 4 shows dot 3 raised/brighter than others). Good.

Now test Pause/Resume and Restart. Click Pause, then screenshot twice to confirm frozen, then Resume, then Restart.

Let me click Pause. Coordinates: Pause button around x=543,y=636.

The button now says Resume. The animated position seems near base (maybe it paused at a moment near loop start). Hard to tell if frozen. Let me take a screenshot now after some delay, then motion won't run if paused. Let me use inspect? It won't give positions. Let me just screenshot again — but the previous image was the click result. I need a fresh screenshot to compare after time passed.

The composition is identical to the paused moment (same pixel positions) — frozen. Good.

Now resume and verify it continues (different positions), then restart. Click Resume.

Label back to Pause. Let me screenshot after a moment to confirm it moved from paused state.

Resume continued from paused state and animation is running with dramatically changed composition (shapes scaled, rotated, corner radius morphed). Good.

Now test Restart. Click Restart.

Restart returned to the beginning composition (matches initial). Everything verified. Console clean.

One thing to verify: restart after being resumed while running - it worked. Pause/resume worked.

Let me also confirm no console errors — console empty throughout.

I'm done. Save final file already present.

Let me report.