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Synthwave sunset · mimo-v2.5-pro

Create an animated synthwave sunset: a glowing gradient sun with scanlines setting over an infinite neon grid that scrolls toward the viewer, with a starfield and a reflected horizon.

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transcript · 4 messages
user

Create an animated synthwave sunset: a glowing gradient sun with scanlines setting over an infinite neon grid that scrolls toward the viewer, with a starfield and a reflected horizon.

assistant
thinking
The user wants me to create a synthwave sunset animation as a single HTML file. This is a classic synthwave/vaporwave aesthetic with:

1. A glowing gradient sun setting on the horizon
2. Scanlines overlay on the sun
3. An infinite neon grid that scrolls toward the viewer
4. A starfield in the sky
5. A reflected horizon

Let me create this as a self-contained index.html with all CSS and JS inline.

I'll use canvas for the animation since it involves complex rendering like grids, reflections, and particle effects.

Let me plan the components:
1. **Starfield**: Random stars twinkling in the upper portion
2. **Sun**: Large circle with gradient (pink/purple/orange) with horizontal scanlines cut through it


3. **Sky gradient**: Deep purple/dark blue gradient from top
4. **Grid**: Perspective grid on the ground plane that scrolls toward viewer
5. **Horizon reflection**: Mirror effect below horizon line
6. **Mountains/city silhouette**: Optional but adds to the aesthetic

I'll build this with canvas for performance and smooth animation.
write /workspace/index.html (7941 bytes)
toolResult

Successfully wrote 7941 bytes to /workspace/index.html

assistant
thinking
The file is created. Let me verify it's there and looks good.

Done! `/workspace/index.html` is ready — a fully self-contained synthwave sunset with: - **Starfield** — twinkling stars across the dark upper sky - **Gradient sun** — yellow → hot pink → deep magenta with animated horizontal scanlines slicing through it - **Mountain silhouette** — undulating horizon line that dips at center to frame the sun - **Horizon glow** — warm radial light bloom where sun meets horizon - **Infinite neon grid** — purple perspective grid with a vanishing point, lines scrolling toward the viewer - **Sun reflection** — soft color wash reflected onto the grid plane - **CRT scanline overlay** — subtle full-screen scanlines for that retro feel All CSS and JS inline, zero external dependencies. Open `index.html` in any browser to watch the animation.

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

modelmimo-v2.5-pro
vendorXiaomi · MiMo
harnesspi-agent
generated2026-07-22

EVALUATION

4/5 working

Synthwave sun with scanlines, neon grid, starfield animate smoothly but no reaction to any input, as expected for a passive animation.

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 motion4.3%
on click4.8%
on drag4.1%
on wheel4.5%
on enter + space4.4%
on arrow keys4.4%
on w/a/s/d4.5%
frame spread27.9 / 255
console errors0
js errors none

METRICS

runtime45.5s
tokens in5.6k
tokens out3.4k
cached1.0k
cost / run$0.0054