Depth engine — Fase 2 (mode-adaptive mezcla):
- New `halo` cue per plane: a top-edge rim-light computed in oklab
(color-mix(in oklab, white N%, transparent); 5/7/8% on raised/overlay/modal).
The `[data-depth]` box-shadow now composes `shadow, halo`. Invisible on light
surfaces (the drop shadow leads), the lift cue on dark surfaces (where the drop
shadow barely shows) — the mode-adaptive answer to "shadow lies in dark",
scoped to the depth channel (global --shadow-* untouched).
- Wired through config-types (DepthPlane.halo) + render-css (declare + compose)
+ config validation + STATIC_DEPTH + regenerated generated/base.css.
Showcase — /temas/profundidad to reference depth (4 -> 9 sections): matches
Material elevation catalog breadth and adds the two axes it lacks (eventful +
open cage):
- Responde a cada estado — dynamic elevation, live interactive control
- La escalera de planos — z-stack of the 5 planes
- Catalogo de planos en reposo — the resting-elevation spec table, our vocabulary
- Luz vs sombra — light/dark side-by-side showing the halo mechanism
- Accesibilidad — never the only channel, reduced-motion, forced-colors, contrast
- Fix: mirror data-theme onto <html> so :root depth tokens stay mode-aware
Docs: DEPTH_ENGINE_RFC (Fase 2 + 5 done, token contract + halo), THEMING 29.
Verified: npm run check 0 errors; depth tests 50/50 (updated the box-shadow
assertion to the shadow,halo composition). Pre-existing `words` recipe-contract
failures unrelated.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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