diff --git a/continue.md b/continue.md
index 02c453b6d..d17a42491 100644
--- a/continue.md
+++ b/continue.md
@@ -24,10 +24,12 @@ Actualizacion Eidos ecosystem 2026-05-16:
 - Validacion de config reforzada: documentos persistidos con `options`
   malformadas fallan como `EidosConfigValidationError` con issues de contrato,
   no como `TypeError` de runtime.
+- IDs de theme y nombres de escalas de color quedan validados como segmentos
+  CSS kebab-case antes de generar selectores o custom properties desde config.
 - Validado:
-  - `npx vitest run src/uix/eidos/active-eidos-config.test.ts` -> 27 tests OK.
+  - `npx vitest run src/uix/eidos/active-eidos-config.test.ts` -> 28 tests OK.
   - `npx vitest run src/uix/eidos/active-eidos.test.ts` -> 19 tests OK.
-  - `npx vitest run src/uix/eidos` -> 7 archivos, 67 tests OK.
+  - `npx vitest run src/uix/eidos` -> 7 archivos, 68 tests OK.
   - `npm run check` -> 0 errores, 0 warnings.
 
 Actualizacion permutation runner 2026-05-16:
diff --git a/src/uix/eidos/active-eidos-config.test.ts b/src/uix/eidos/active-eidos-config.test.ts
index 3c2df0349..b76424532 100644
--- a/src/uix/eidos/active-eidos-config.test.ts
+++ b/src/uix/eidos/active-eidos-config.test.ts
@@ -505,6 +505,30 @@ describe('ActiveEidos config', () => {
 		)
 	})
 
+	it('validates CSS-facing theme and color scale keys', () => {
+		const cfg = structuredClone(THEME_BASE_OPTIONS)
+
+		;(cfg.primitives as { color: { scales: Record<string, ColorScale> } }).color = {
+			scales: {
+				'bad scale': colorScale('bad-scale')
+			}
+		}
+		;(cfg.themes as Record<string, unknown>)['bad theme'] = cfg.themes!['base-light']
+		;(cfg.themes!['base-light'].color!.scales as Record<string, ColorScale>)['BadScale'] =
+			colorScale('bad-scale')
+
+		const report = createEidos(cfg).validate()
+
+		expect(report.ok).toBe(false)
+		expect(
+			report.issues.some((issue) => issue.path === 'primitives.color.scales.bad scale')
+		).toBe(true)
+		expect(report.issues.some((issue) => issue.path === 'themes.bad theme')).toBe(true)
+		expect(
+			report.issues.some((issue) => issue.path === 'themes.base-light.color.scales.BadScale')
+		).toBe(true)
+	})
+
 	it('validates explicit alpha color scales against their physical scale', () => {
 		const cfg = structuredClone(THEME_BASE_OPTIONS)
 		const color = cfg.themes!['base-light'].color as {
diff --git a/src/uix/eidos/lib/config.ts b/src/uix/eidos/lib/config.ts
index 8e7286d45..264d3b597 100644
--- a/src/uix/eidos/lib/config.ts
+++ b/src/uix/eidos/lib/config.ts
@@ -88,6 +88,7 @@ export function validateEidosConfig(options: EidosConfig): EidosValidationReport
 		}
 	}
 
+	validateThemeKeys(options, issues)
 	validateColorScales(options, issues)
 	validateColorRoles(options, issues)
 	validateTypography(options, issues)
@@ -239,14 +240,22 @@ function validateColorScales(options: EidosConfig, issues: EidosValidationIssue[
 	const scales = options.primitives.color?.scales ?? {}
 
 	for (const [name, scale] of Object.entries(scales)) {
+		validateCssTokenKey(`primitives.color.scales.${name}`, name, 'color scale', issues)
 		validateColorScale(`primitives.color.scales.${name}`, name, scale, issues)
 	}
 
 	for (const [themeId, theme] of Object.entries(options.themes ?? {})) {
 		for (const [name, scale] of Object.entries(theme.color?.scales ?? {})) {
+			validateCssTokenKey(`themes.${themeId}.color.scales.${name}`, name, 'color scale', issues)
 			validateColorScale(`themes.${themeId}.color.scales.${name}`, name, scale, issues)
 		}
 		for (const [name, scale] of Object.entries(theme.color?.alphaScales ?? {})) {
+			validateCssTokenKey(
+				`themes.${themeId}.color.alphaScales.${name}`,
+				name,
+				'alpha color scale',
+				issues
+			)
 			validateColorScale(`themes.${themeId}.color.alphaScales.${name}`, name, scale, issues)
 			if (
 				!hasOwn(options.primitives.color?.scales ?? {}, name) &&
@@ -261,6 +270,12 @@ function validateColorScales(options: EidosConfig, issues: EidosValidationIssue[
 	}
 }
 
+function validateThemeKeys(options: EidosConfig, issues: EidosValidationIssue[]): void {
+	for (const themeId of Object.keys(options.themes ?? {})) {
+		validateCssTokenKey(`themes.${themeId}`, themeId, 'theme id', issues)
+	}
+}
+
 function validateColorRoles(options: EidosConfig, issues: EidosValidationIssue[]): void {
 	const roles = options.semantics.color.roles
 	const globalScales = options.primitives.color?.scales ?? {}
@@ -741,6 +756,19 @@ function isTextMetric(value: unknown): value is TextMetric {
 	)
 }
 
+function validateCssTokenKey(
+	path: string,
+	value: string,
+	label: string,
+	issues: EidosValidationIssue[]
+): void {
+	if (isCssTokenSegment(value)) return
+	issues.push({
+		path,
+		message: `${label} must be a kebab-case CSS token segment`
+	})
+}
+
 function resolveRoleScaleName(
 	roleDef: string | ColorRoleDefinition | undefined
 ): string | undefined {