Neon on midnight, the styleguide.
The living reference for this site's design system: color tokens, type scale, controls, the glass surface and the light effects the home is built from. Light means running in production now; past work stays unlit.
Color tokens
Four brand primitives in @theme, and the shadcn semantic tokens in .dark that components actually use. Never hard-code a color.
midnight
#030407
Ground. Every page sits on it.
cobalt
#1558C9
Brand. Grids, glow cores, never small text.
neon
#2F6BFF
Light. Beams, the lit slab, the timeline rail.
neon-soft
#7AA6FF
Readable light. Accent words, links, focus.
Semantic tokens (shadcn)
--backgroundbg-background--foregroundbg-foreground--cardbg-card--mutedbg-muted--muted-foregroundbg-muted-foreground--primarybg-primary--borderbg-border--inputbg-input--ringbg-ring--destructivebg-destructive
Type scale
Geist for words, Geist Mono for measurements. Mono turns on tabular figures and a slashed zero so numbers line up.
- Display H1semibold · clamp(2.5rem → 6rem) · leading 0.98 · tracking −0.04em
Shipping to production.
- Section title H2medium · clamp(2rem → 3.5rem) · leading 1.05 · max 24ch
Measured in production, one engagement after another.
- Bodyregular · 1rem · muted-foreground · max 44–56ch
Measured results from systems I helped ship. Full role descriptions live in the experience history.
- Mono measurementGeist Mono · medium · tnum + slashed zero
−38% · 27 · 2020 – Present
Buttons and focus
Navigation that looks like a button is still a link: Link or a with buttonVariants. Press Tab to see the focus ring, a 2px neon-soft outline with an offset.
focus-visible
Static sample of the ring. Text links use the same outline and gain an underline on hover.
Glass surface
.glass-control: 6% white fill, a hairline edge and an 18px blur. It only sits on top of light; on bare midnight it reads as a grey box.
Glass over light
Used on the header, the dock and secondary buttons. The header uses a thicker frost with a lit top edge (.header-glass).
Light effects
Reusable effects in globals.css. Only work running in production now emits light; past work uses cold filaments.
.blueprint
Cobalt grid with a light pool at the start. Put it on a
relative isolatesection..filament-glow
Neon rule: the footer's top edge and the line under the about portrait.
.timeline-fill · .timeline-dot
The experience rail lights up to the middle of the viewport as you scroll, and each role's dot turns on when the light reaches it.
.ruler-ticks
72 month marks under the career ruler.
.css-beam
Vertical light without WebGL, the phone hero beam.
CostSlab
The only emitter: the featured result, Linda Lifetech's cloud bill after the migration, labelled Before 100% and Now 62% inside the bar. On the home its rounded box is the surface the hero beam lands on.
Cloud bill · Linda Lifetech · in production
−38%
Ledger rows
OutcomeLedger: metric in mono, the summary, the stack it ran on and who it was for. Hovering a row dims its siblings; every row links to its role in the experience history.
- 7developers I lead2026 – PresentInternal super app for Callink, HR first and then every department, on on-premises Kubernetes.Built with NestJS · TypeScript · Kubernetes · OpenTelemetryCallinkTech Lead at BuildboxNow · in production
- −38%cloud cost2025 – 2026Led a zero-downtime modernization of a live healthtech platform and moved its cloud from AWS to GCP.Built with Node.js · TypeScript · React Native · Kotlin · Google Cloud · TerraformLinda LifetechTech Lead at Buildbox
- −80%worst-case app load time2023 – 2024Took the worst-case load of the field-sales app behind about 97% of Grupo Petrópolis’ USD 4B yearly revenue from 8 minutes to 1 min 37 s.Built with React · React Native · Node.jsGrupo PetrópolisSoftware Engineer at Buildbox
- 27Brazilian states, one pricing platform2024 – 2025National pricing platform with regional tax rules for Lactalis, the largest dairy group in the world.Built with Node.js · TypeScriptLactalis GroupSoftware Engineer at Buildbox
- 0.5×the estimated delivery time2022 – 2023Shipped the internal web and mobile gamification platform for MSD Brazil with near-zero production defects.MSDSoftware Engineer at Buildbox
- 580+teaching units served2021 – 2022Go service that turns MP4 uploads into adaptive HLS streams for Poliedro, built for peak load.Built with Go · HLSPoliedroSoftware Engineer at Nkey
Career ruler
CareerRuler takes the timeline built from the experiences and today's date, so the current span keeps growing. Behind it, the floating lines background (desktop only).
- FreelanceJun 2020 – Jul 2021
- NkeyAug 2021 – Apr 2022
- BuildboxMay 2022 – Present
MSD · Grupo Petrópolis · Lactalis Group · Linda Lifetech · Callink
WebGL scenes
Vendored from React Bits into components/ui, tuned to the palette. Each one pauses with the header control.
LaserFlow
The beam. Falls on the cost slab in the hero and on the floor of the closing scene, wrapping a rounded surface.
Lanyard
The 3D badge in the hero: drops in with a soft bounce, sways, flips on click.
FloatingLines
Section lines behind the career ruler, the about page and the experience and technology heroes.
GhostFibers + Lightfall
The closing scene: fibres drifting through the middle while light rains behind the signature.
Motion rules
- Ambient motion (WebGL lines, beams, badge sway) holds still when the OS asks for reduced motion or the visitor presses the pause control in the header. Components read both through useStillMotion().
- WebGL scenes mount only when visible. The hero beam, the badge and the section lines are desktop only (DESKTOP_QUERY); phones get CSS light such as the beam above. The closing scene is the one exception and also renders on phones.
- Scroll-drawn effects (timeline rail, ruler spans, slab dimming) use CSS view timelines and are skipped under reduced motion; the static state is the final state.
- No loop plays without the pause path. Small effects stay in CSS.