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108 lines
9.6 KiB
108 lines
9.6 KiB
# background — alcance de tema: análisis y propuesta
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> Generado por `node --import tsx/esm scripts/theming-census.ts --report`.
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> Lo **medido** y la **propuesta** se regeneran; el **Veredicto** (§5) se conserva.
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> Vista de conjunto: [README](./README.md) · método y protocolo:
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> [`PLAN-theming.md`](../../process/PLAN-theming.md) §1, §2, §7.
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- **Medido**: 2026-08-20 · **Alcance**: **35%** — 8 de 23 knobs por token público
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- **Knobs de apariencia**: 26 — público 8 · privado 6 · global 6 · literal 3 · sistema 3 _(fuera del ratio)_
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- **Contrato hoy** (`lib/recipes/base.ts`): 31 pública(s) — `pattern-rule`, `pattern-cell`, `pattern-dot-size`, `pattern-glow-size`, `pattern-glow-at`, `pattern-glow-strength`, `pattern-mesh-opacity`, `pattern-noise-opacity`, `pattern-vignette-strength`, `pattern-lines-width`, `pattern-lines-gap`, `pattern-lines-angle`, `pattern-rings-width`, `pattern-rings-gap`, `fade-size`, `fade-at`, `scrim-fg`, `scrim-fg-over-dark`, `scrim-fg-over-light`, `scrim-strength-xs`, `scrim-strength-sm`, `scrim-strength-md`, `scrim-strength-lg`, `scrim-strength-xl`, `gradient-drift-duration`, `pause-offset`, `pause-z`, `parallax-travel`, `spotlight-size`, `spotlight-strength`, `spotlight-fg`
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- **Eje `size`**: no · **ficheros**: `background.css`
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## 1. Knobs fuera de alcance
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### 1.1 Directo a primitivo global (6)
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| # | fichero:línea | selector | propiedad | valor |
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| ---: | --- | --- | --- | --- |
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| 1 | `background.css:192` | `[data-background-layer][data-pattern='mesh']` | `background-image` | `var(--gradient-aurora)` |
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| 2 | `background.css:379` | `[data-background-layer][data-kind='scrim'][data-blur='sm']` | `backdrop-filter` | `blur(var(--blur-sm))` |
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| 3 | `background.css:382` | `[data-background-layer][data-kind='scrim'][data-blur='md']` | `backdrop-filter` | `blur(var(--blur-md))` |
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| 4 | `background.css:385` | `[data-background-layer][data-kind='scrim'][data-blur='lg']` | `backdrop-filter` | `blur(var(--blur-lg))` |
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| 5 | `background.css:388` | `[data-background-layer][data-kind='scrim'][data-blur='xl']` | `backdrop-filter` | `blur(var(--blur-xl))` |
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| 6 | `background.css:391` | `[data-background-layer][data-kind='scrim'][data-blur='xxl']` | `backdrop-filter` | `blur(var(--blur-xxl))` |
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### 1.2 A través de un privado (6)
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| # | fichero:línea | selector | propiedad | valor |
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| ---: | --- | --- | --- | --- |
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| 1 | `background.css:197` | `[data-background-layer][data-pattern='grid']` | `background-image` | `linear-gradient(to right, var(--_background-rule) 1px, transparent 1px), linear-gradient(to bottom, var(--_background-rule) 1px, transparent 1px)` |
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| 2 | `background.css:264` | `[data-background-layer][data-kind='gradient']` | `background` | `var(--_background-gradient-image, transparent)` |
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| 3 | `background.css:303` | `[data-background-layer][data-kind='scrim']` | `background` | `color-mix( in oklch, var(--_background-scrim-ink) calc(var(--_background-scrim-weight) * 100%), transparent )` |
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| 4 | `background.css:345` | `[data-background-layer][data-kind='scrim'][data-gradient='to-t']` | `background` | `linear-gradient( to top, color-mix( in oklch, var(--_background-scrim-ink) calc(var(--_background-scrim-weight) * 100%), transparent ), transparent )` |
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| 5 | `background.css:356` | `[data-background-layer][data-kind='scrim'][data-gradient='to-b']` | `background` | `linear-gradient( to bottom, color-mix( in oklch, var(--_background-scrim-ink) calc(var(--_background-scrim-weight) * 100%), transparent ), transparent )` |
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| 6 | `background.css:367` | `[data-background-layer][data-kind='scrim'][data-gradient='radial']` | `background` | `radial-gradient( closest-side, transparent 30%, color-mix( in oklch, var(--_background-scrim-ink) calc(var(--_background-scrim-weight) * 100%), transparent ) )` |
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### 1.3 Literales (3)
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| # | fichero:línea | selector | propiedad | valor |
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| ---: | --- | --- | --- | --- |
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| 1 | `background.css:76` | `[data-background-layer] :where(img, video)` | `inline-size` | `100%` |
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| 2 | `background.css:77` | `[data-background-layer] :where(img, video)` | `block-size` | `100%` |
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| 3 | `background.css:239` | `[data-background-layer][data-pattern='noise']` | `background-image` | `url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E")` |
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## 2. Sistema transversal (3) — informativo, fuera del ratio
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Un tema los alcanza **a nivel de sistema**, por diseño (recipe-contract §2).
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| # | fichero:línea | selector | propiedad | valor |
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| ---: | --- | --- | --- | --- |
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| 1 | `background.css:100` | `[data-background-layer][data-opacity='subtle']` | `opacity` | `var(--opacity-subtle)` |
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| 2 | `background.css:103` | `[data-background-layer][data-opacity='muted']` | `opacity` | `var(--opacity-muted)` |
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| 3 | `background.css:106` | `[data-background-layer][data-opacity='ghost']` | `opacity` | `var(--opacity-ghost)` |
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## 3. Privados de la receta — ¿de dónde sale su valor?
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| privado | declaraciones | valor(es) | origen | ¿deriva de un público? |
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| --- | ---: | --- | --- | :-: |
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| `--_background-tint` | 2 | `var(--color-primary-solid)`, `var(--palette-solid, var(--color-primary-solid))` | global | no |
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| `--_background-rule` | 1 | `var(--background-pattern-rule)` | public | **sí** |
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| `--_background-cell` | 1 | `var(--background-pattern-cell)` | public | **sí** |
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| `--_background-scrim-ink` | 4 | `var(--background-scrim-fg)`, `var(--background-scrim-fg-over-dark)`, `var(--background-scrim-fg-over-light)`, `var(--palette-solid, var(--background-scrim-fg))` | public | **sí** |
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| `--_background-scrim-weight` | 5 | `var(--background-scrim-strength-md)`, `var(--background-scrim-strength-xs)`, `var(--background-scrim-strength-sm)`, `var(--background-scrim-strength-lg)`, `var(--background-scrim-strength-xl)` | public | **sí** |
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| `--_background-parallax-offset` | 3 | `calc(var(--_background-parallax-travel) * -1)`, `var(--_background-parallax-travel)`, `calc( (var(--background-progress, 0.5) - 0.5) * 2 * var(--_background-parallax-travel) )` | private, public | no |
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| `--_background-parallax-travel` | 1 | `calc( var(--background-parallax-travel) * var(--_background-speed, 0) )` | public | **sí** |
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| `--_background-bleed-size` | 1 | `var( --_background-bleed, max(var(--_background-parallax-travel), var(--_background-parallax-travel) * -1) )` | private | no |
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| `--_background-spotlight-ink` | 2 | `var(--background-spotlight-fg)`, `var(--palette-solid, var(--background-spotlight-fg))` | public | **sí** |
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Consumidos y **no declarados en el CSS** (vienen de `base.ts` o de un estilo inline del wrapper): `--_background-bleed`, `--_background-depth`, `--_background-gradient-image`, `--_background-speed`.
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## 4. Propuesta de corrección
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### 4.1 Tokens a declarar en `lib/recipes/base.ts` (2)
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Valor **verbatim** del CSS de hoy: el default no se mueve, sólo cambia quién
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puede moverlo. Nombres derivados de recipe-contract §1 (ejes lógicos, talla
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al final) y theming §6.7 (slots de color, modificador delante). Un token con
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DOS valores distintos es una colisión de nombre: son dos knobs, o el nombre
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no distingue lo que debería — se marca `⚠`.
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| token (`--background-…`) | scope TSC | valor propuesto | usos |
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| --- | --- | --- | ---: |
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| `layer-backdrop-filter` | `root` | ⚠ `blur(var(--blur-sm))` / `blur(var(--blur-md))` / `blur(var(--blur-lg))` / `blur(var(--blur-xl))` / `blur(var(--blur-xxl))` | 5 |
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| `layer-bg-image` | `root` | ⚠ `var(--gradient-aurora)` / `url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E")` | 2 |
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### 4.2 Sin nombre mecánico (8)
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- **⚠ decisión: `100%` es un valor identidad o geometría de layout, no un knob de tema — el perímetro de «knob» es D-TH.2, sin firmar** — 2: `inline-size`, `block-size`.
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- **ya alcanzable: el privado `--_background-rule` deriva de un público (`var(--background-pattern-rule)`) — sin acción; el censo lo cuenta como no alcanzable por el límite del regex** — 1: `background-image`.
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- **⚠ decisión: el privado que alimenta este knob no se declara en el CSS (viene de `base.ts` o de un estilo inline) — hay que resolverlo antes de nombrarlo** — 1: `background`.
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- **ya alcanzable: el privado `--_background-scrim-ink` deriva de un público (`var(--background-scrim-fg)`, `var(--background-scrim-fg-over-dark)`, `var(--background-scrim-fg-over-light)`, `var(--palette-solid, var(--background-scrim-fg))`) — sin acción; el censo lo cuenta como no alcanzable por el límite del regex** — 4: `background`.
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### 4.4 Lo que hay que comprobar a mano (PLAN-theming §1.3 · §7.4)
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- [ ] **Privado que no deriva de un público** — §3 lo marca; el privado debe leer el público o desaparecer.
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- [ ] **Velo o acento en el nodo equivocado** (`archetype: 'item'` en un envoltorio, un `background` en shorthand que mata la capa de estado) — se mide desde el píxel hacia arriba.
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- [ ] **Doble animación** al mover un sello a una superficie con animación propia — registro de `animationstart`/`animationend`.
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- [ ] **Diff de computed = 0** en reposo · hover · abierto · disabled · foco, por talla, antes y después.
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- [ ] **Centinela por token nuevo**: valor imposible en el root → el nodo lo sigue. Si no, el token miente.
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## 5. Veredicto
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<!-- veredicto:start -->
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_(pendiente — lo escribe el autor; se conserva al regenerar)_
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<!-- veredicto:end -->
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