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Synthwave sunset · qwen3.8-max

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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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
Making a single-file HTML using canvas animation: synthwave sunset — sun with gradient, scanlines (Venetian blind effect), scrolling perspective grid, stars, horizon reflection. Alright, let's write it.
write /tmp/ws/index.html (9997 bytes)
toolResult

Successfully wrote 9997 bytes to /tmp/ws/index.html

assistant
thinking
Confirmed existence. Simple sanity check — there might be an unused variable warning, but no problem. Done.

Created `/tmp/ws/index.html` — a fully self-contained synthwave sunset with zero external resources. Everything renders on a single `<canvas>`: **Features:** - 🌅 **Glowing gradient sun** — yellow core fading into magenta, with a soft radial halo, classic retro **scanline bands** that widen toward the bottom and slowly crawl downward - 🌇 **Setting animation** — the sun drifts down toward the horizon on a smooth 40-second loop - 🔷 **Infinite neon grid** — perspective-correct horizon lines that scroll toward the viewer (`y = horizon + k/z` projection), glowing cyan verticals radiating from the vanishing point, magenta horizontals with distance-based brightness/blur - ✨ **Starfield** — twinkling stars that fade out near the bright horizon glow - 💫 **Reflected horizon** — a mirrored sun glow column on the grid with shimmering, wobbling reflection slats, plus a hot pink horizon glow line - 📺 **CRT overlay** — repeating scanline pattern and a radial vignette for that retro monitor feel - Neon flickering "SYNTHWAVE SUNSET" title in CSS It handles window resizing and devicePixelRatio scaling, and runs entirely offline.

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

modelqwen3.8-max
vendorQwen
harnesspi-agent
generated2026-08-03

EVALUATION

3/5 partial

Static synthwave sunset scene with retro grid and glowing text; visuals don't respond to click, drag, wheel, or keys.

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 motion6.3%
on click6.9%
on drag10.6%
on wheel7.4%
on enter + space6.3%
on arrow keys4.9%
on w/a/s/d2.9%
frame spread42.2 / 255
console errors0
js errors none

METRICS

runtime74.7s
tokens in7.2k
tokens out4.2k
cached2.0k
cost / run$0.0360