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Animated loader · step-3.7-flash

Using the pre-provided gsap.min.js (global gsap), create a looping animated loading sequence on a dark background: morphing rounded shapes and a staggered row of dots orchestrated on a GSAP timeline with smooth easing.

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user

Using the pre-provided gsap.min.js (global gsap), create a looping animated loading sequence on a dark background: morphing rounded shapes and a staggered row of dots orchestrated on a GSAP timeline with smooth easing.

assistant
thinking
Let me analyze the requirements:

1. Use the pre-provided `gsap.min.js` in the current directory
2. Create a single self-contained HTML file with CSS and JS inline
3. Loop through animations
4. Dark background
5. Morphing rounded shapes
6. Staggered row of dots orchestrated on a GSAP timeline
7. Smooth easing

I should first check what files exist in the current directory, particularly gsap.min.js.
bash {"command":"ls -la /workspace"}
toolResult

total 132 drwxrwxrwx 3 node node 96 Jul 22 17:03 . drwxr-xr-x 1 root root 4096 Jul 22 17:03 .. -rw-r--r-- 1 node node 72214 Jul 22 17:03 gsap.min.js

assistant
thinking
Good, gsap.min.js exists. Now let me create a beautiful single-page loading animation with:

1. Morphing rounded shapes (blobs/circles that change shape, size, position) using SVG or CSS border-radius morphing or actual SVG morphing with GSAP
2. Staggered row of dots that pulse/bounce
3. Dark background
4. Self-contained HTML with inline CSS and JS
5. Looping GSAP timeline

I'll use SVG circles that morph their path data or use scale/rotation/movement to create organic-looking shapes, plus a row of dots with staggered animations.

For morphing shapes, I can use SVG path morphing with GSAP. GSAP's MorphSVGPlugin is a paid plugin, so I'll use `attr` tweening on path data directly, or better yet, I can create the effect using CSS transforms (scale, rotation, border-radius changes) and SVG animations. Actually, for a cool morphing effect without paid plugins, I can:

- Use multiple SVG circles/groups that scale, rotate, and move on a timeline
- Use CSS shapes with border-radius that animate between different values
- Use SVG filter effects like feTurbulence for organic blob morphing (but that might be too complex)

A cleaner approach: Create several rounded divs or SVG circles. For morphing, I can animate their `border-radius` values using CSS or GSAP. "Morphing rounded shapes" sounds like blobs - organic shapes.

Let me create:
- 3-4 organic blob shapes colored differently
- They scale, rotate, and translate on the timeline
- Use CSS `border-radius` with GSAP to morph the corners
- 5-6 dots in a row underneath, staggered

Let me write the complete HTML file.

Here's my plan:
- Use SVG for the blobs so I can control their shape precisely
- Actually, use HTML divs with border-radius and transform
- GSAP timeline with repeat: -1 for infinite loop
- Smooth ease functions (power2, power3, elastic, back.out, etc.)

For the blob morphing effect, I can:
- Define keyframe border-radius values like "60% 40% 30% 70% / 60% 30% 70% 40%"
- Animate between different border-radius values using GSAP's `borderRadius` plugin or just CSS attr tweens

Wait, GSAP's MotionPathPlugin or MorphSVGPlugin require registration but MorphSVG is Club GreenSock. However, animating borderRadius is supported natively in GSAP 3!

I'll create:
- A section with 3 morphing blob shapes
- A section with 5 dots
- Dark gradient background
- Use GSAP timeline orchestrating everything

Let me write a really polished, visually appealing version.
write /workspace/index.html (5099 bytes)
toolResult

Successfully wrote 5099 bytes to /workspace/index.html

assistant
thinking
The file was written successfully. Let me verify it exists and works correctly by reading it back quickly.
bash {"command":"ls -la /workspace/index.html && echo \"---\" && head -n 5 /workspace/index.html"}
toolResult

-rw-r--r-- 1 node node 5099 Jul 22 17:04 /workspace/index.html --- <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" />

assistant
thinking
The file is created successfully at /workspace/index.html. Let me summarize what was built for the user.

Created `/workspace/index.html`. Here's what's inside: - **Self-contained**: All CSS and JS are inline; the only external `<script>` is `gsap.min.js` loaded from the local filesystem. - **Dark stage**: Deep `#0f1115` background with a centered stage. - **Morphing blobs**: Three layered `div` blobs with colored radial gradients and soft box-shadows. Their `border-radius` is tweened through multiple organic keyframe values on a shared timeline, while they also oscillate with gentle `scale`, `rotation`, and `x/y` translations at staggered offsets — giving a continuous blobby, morphing feel. - **Staggered dots row**: Five `.dot` elements beneath the blobs, animated with a GSAP timeline `stagger: { from: "center" }` for a ripple-like bounce in/out, then a secondary tap-like ripple a moment later. - **Orchestration**: A single `tl` timeline (`repeat: -1`) sequences the blob morphs, scaling movements, dot pulsing, and a subtle label opacity fade so everything feels neatly choreographed. No network requests, no extra files — just save and open `index.html` locally.

TAKE IT TO CODE

A single self-contained HTML file — copy it and open in any browser, or reuse the prompt with your own pi-agent run.

RUN

modelstep-3.7-flash
vendorStepFun
harnesspi-agent
generated2026-07-22

EVALUATION

3/5 working

Morphing shapes with a glow and staggered dot row loop continuously, but inputs cause no additional change beyond the animation itself.

Vision grade · anthropic/claude-sonnet-5

MEASUREMENTS

Raw readings from the capture, not a verdict — the grade above is the only judgement. Percentages are how much of the screen changed; the measure under-reports sparse motion on a dark background.

idle motion3.5%
on click3.0%
on drag3.1%
on wheel3.4%
on enter + space3.4%
on arrow keys3.4%
on w/a/s/d3.4%
frame spread34.8 / 255
console errors0
js errors none

METRICS

runtime34.1s
tokens in7.2k
tokens out3.1k
cached5.4k
cost / run$0.0052