Synthwave sunset · muse-ember

Built `index.html` — a self-contained, full-screen synthwave canvas (no external assets/CDNs): - **Sun & sky:** Glowing radial-gradient sun (yellow→orange→pink) with widening horizontal scanline bands cut toward its base, purple→orange gradient sky, 220 seeded twinkling stars, and dark procedural mountain silhouettes at the horizon. - **Grid travel:** Perspective neon grid — radiating longitudinal lines from a central vanishing point and exponentially-spaced horizontal lines scrolling toward the viewer on a 2s cycle. - **Sun movement:** Sinusoidal sink over the loop — high at start, lowest (bottom just touching horizon) at mid-loop, rising back — so it stays fully visible. - **Reflection:** Below the horizon, a feathered, fragmented/shimmering column of horizontal streaks in the sun's colors (mirrored gradient, wobble + depth fade), clearly distinct from a second sun, with grid lines over it. - **Loop & controls:** 16s seamless loop (all sub-periods — grid 2s, glow 4s, scanline breathe 8s, star twinkles — divide 16s, and sun motion is sinusoidal, so no reset jump). Pause/Resume and Restart buttons (plus Space/R keys), loop progress bar and time readout. Canvas resizes to viewport with DPR handling. **Checked in browser:** inspected initial frame (console clean), motion frames to ~4s confirming grid lines rushing toward foreground and sun descending, clicked Pause (froze at t=3.0s, label → Resume), Resume (label → Pause), and Restart (returned to t=0.1s with the original starting composition). Fixed a hard-edged reflection rectangle and over-dense central grid lines found during inspection. **Not fully verified:** the exact 16s wrap moment and the mid-loop lowest sun position were not screenshot-sampled in real time (verified by the periodic math and by motion up to 4s instead); keyboard shortcuts were implemented but not exercised via the browser tool.