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perf: Defer Bootstrap with inline critical CSS for LCP optimization

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- Add grid system (row, col-*) to critical-bootstrap.css to prevent CLS
- Add text utilities, sizing, spacing, and alert component to critical CSS
- Enable CriticalBootstrapService to inline critical Bootstrap in <head>
- Defer bootstrap-subset.min.css (21KB) via media=print + onload
- Fix preload pointing to wrong Bootstrap file (was 227KB, now 147KB)

Expected improvement: ~970ms reduction in render-blocking CSS

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
FrankZamora
2025-11-29 12:05:50 -06:00
parent 5d4523e49a
commit 62a0f17b21
4 changed files with 221 additions and 16 deletions
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193
Assets/css/critical-bootstrap.css
View File

@@ -84,6 +84,78 @@ button:focus:not(:focus-visible) {
.container { max-width: 1320px; } .container { max-width: 1320px; }
} }
/* ==========================================================================
GRID SYSTEM (Layout crítico - Previene CLS)
========================================================================== */
.row {
--bs-gutter-x: 1.5rem;
--bs-gutter-y: 0;
display: flex;
flex-wrap: wrap;
margin-top: calc(-1 * var(--bs-gutter-y));
margin-right: calc(-0.5 * var(--bs-gutter-x));
margin-left: calc(-0.5 * var(--bs-gutter-x));
}
.row > * {
flex-shrink: 0;
width: 100%;
max-width: 100%;
padding-right: calc(var(--bs-gutter-x) * 0.5);
padding-left: calc(var(--bs-gutter-x) * 0.5);
margin-top: var(--bs-gutter-y);
}
.col { flex: 1 0 0%; }
.col-auto { flex: 0 0 auto; width: auto; }
.col-1 { flex: 0 0 auto; width: 8.33333333%; }
.col-2 { flex: 0 0 auto; width: 16.66666667%; }
.col-3 { flex: 0 0 auto; width: 25%; }
.col-4 { flex: 0 0 auto; width: 33.33333333%; }
.col-5 { flex: 0 0 auto; width: 41.66666667%; }
.col-6 { flex: 0 0 auto; width: 50%; }
.col-7 { flex: 0 0 auto; width: 58.33333333%; }
.col-8 { flex: 0 0 auto; width: 66.66666667%; }
.col-9 { flex: 0 0 auto; width: 75%; }
.col-10 { flex: 0 0 auto; width: 83.33333333%; }
.col-11 { flex: 0 0 auto; width: 91.66666667%; }
.col-12 { flex: 0 0 auto; width: 100%; }
@media (min-width: 768px) {
.col-md-1 { flex: 0 0 auto; width: 8.33333333%; }
.col-md-2 { flex: 0 0 auto; width: 16.66666667%; }
.col-md-3 { flex: 0 0 auto; width: 25%; }
.col-md-4 { flex: 0 0 auto; width: 33.33333333%; }
.col-md-5 { flex: 0 0 auto; width: 41.66666667%; }
.col-md-6 { flex: 0 0 auto; width: 50%; }
.col-md-7 { flex: 0 0 auto; width: 58.33333333%; }
.col-md-8 { flex: 0 0 auto; width: 66.66666667%; }
.col-md-9 { flex: 0 0 auto; width: 75%; }
.col-md-10 { flex: 0 0 auto; width: 83.33333333%; }
.col-md-11 { flex: 0 0 auto; width: 91.66666667%; }
.col-md-12 { flex: 0 0 auto; width: 100%; }
}
@media (min-width: 992px) {
.col-lg-1 { flex: 0 0 auto; width: 8.33333333%; }
.col-lg-2 { flex: 0 0 auto; width: 16.66666667%; }
.col-lg-3 { flex: 0 0 auto; width: 25%; }
.col-lg-4 { flex: 0 0 auto; width: 33.33333333%; }
.col-lg-5 { flex: 0 0 auto; width: 41.66666667%; }
.col-lg-6 { flex: 0 0 auto; width: 50%; }
.col-lg-7 { flex: 0 0 auto; width: 58.33333333%; }
.col-lg-8 { flex: 0 0 auto; width: 66.66666667%; }
.col-lg-9 { flex: 0 0 auto; width: 75%; }
.col-lg-10 { flex: 0 0 auto; width: 83.33333333%; }
.col-lg-11 { flex: 0 0 auto; width: 91.66666667%; }
.col-lg-12 { flex: 0 0 auto; width: 100%; }
}
/* Gutter utilities */
.g-0, .gx-0 { --bs-gutter-x: 0; }
.g-0, .gy-0 { --bs-gutter-y: 0; }
.g-3, .gx-3 { --bs-gutter-x: 1rem; }
.g-3, .gy-3 { --bs-gutter-y: 1rem; }
/* ========================================================================== /* ==========================================================================
FLEXBOX UTILITIES (Layout crítico) FLEXBOX UTILITIES (Layout crítico)
========================================================================== */ ========================================================================== */
@@ -96,10 +168,16 @@ button:focus:not(:focus-visible) {
.d-block { .d-block {
display: block !important; display: block !important;
} }
.d-inline-block {
display: inline-block !important;
}
.flex-wrap { .flex-wrap {
flex-wrap: wrap !important; flex-wrap: wrap !important;
} }
.flex-column {
flex-direction: column !important;
}
.justify-content-center { .justify-content-center {
justify-content: center !important; justify-content: center !important;
@@ -107,31 +185,98 @@ button:focus:not(:focus-visible) {
.justify-content-between { .justify-content-between {
justify-content: space-between !important; justify-content: space-between !important;
} }
.justify-content-start {
justify-content: flex-start !important;
}
.justify-content-end {
justify-content: flex-end !important;
}
.align-items-center { .align-items-center {
align-items: center !important; align-items: center !important;
} }
.align-items-start {
align-items: flex-start !important;
}
.align-items-end {
align-items: flex-end !important;
}
.gap-2 { .gap-2 {
gap: 0.5rem !important; gap: 0.5rem !important;
} }
.gap-3 {
gap: 1rem !important;
}
/* ========================================================================== /* ==========================================================================
SPACING UTILITIES (Margin/Padding críticos) SPACING UTILITIES (Margin/Padding críticos)
========================================================================== */ ========================================================================== */
.m-0 { margin: 0 !important; }
.m-auto { margin: auto !important; }
.mb-0 { margin-bottom: 0 !important; } .mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: 0.25rem !important; }
.mb-2 { margin-bottom: 0.5rem !important; } .mb-2 { margin-bottom: 0.5rem !important; }
.mb-3 { margin-bottom: 1rem !important; } .mb-3 { margin-bottom: 1rem !important; }
.mb-4 { margin-bottom: 1.5rem !important; }
.mt-0 { margin-top: 0 !important; }
.mt-2 { margin-top: 0.5rem !important; }
.mt-3 { margin-top: 1rem !important; }
.me-1 { margin-right: 0.25rem !important; } .me-1 { margin-right: 0.25rem !important; }
.me-2 { margin-right: 0.5rem !important; } .me-2 { margin-right: 0.5rem !important; }
.me-3 { margin-right: 1rem !important; }
.ms-2 { margin-left: 0.5rem !important; } .ms-2 { margin-left: 0.5rem !important; }
.ms-3 { margin-left: 1rem !important; } .ms-3 { margin-left: 1rem !important; }
.py-3 { .mx-auto { margin-left: auto !important; margin-right: auto !important; }
padding-top: 1rem !important;
padding-bottom: 1rem !important; .p-0 { padding: 0 !important; }
.p-2 { padding: 0.5rem !important; }
.p-3 { padding: 1rem !important; }
.py-2 { padding-top: 0.5rem !important; padding-bottom: 0.5rem !important; }
.py-3 { padding-top: 1rem !important; padding-bottom: 1rem !important; }
.py-4 { padding-top: 1.5rem !important; padding-bottom: 1.5rem !important; }
.px-2 { padding-left: 0.5rem !important; padding-right: 0.5rem !important; }
.px-3 { padding-left: 1rem !important; padding-right: 1rem !important; }
.px-4 { padding-left: 1.5rem !important; padding-right: 1.5rem !important; }
/* ==========================================================================
SIZING UTILITIES (Width/Height críticos)
========================================================================== */
.w-100 { width: 100% !important; }
.w-auto { width: auto !important; }
.h-100 { height: 100% !important; }
.h-auto { height: auto !important; }
/* ==========================================================================
TEXT UTILITIES (Críticos para layout)
========================================================================== */
.text-center { text-align: center !important; }
.text-start { text-align: left !important; }
.text-end { text-align: right !important; }
.text-white { color: #fff !important; }
.text-muted { color: var(--bs-secondary-color, #6c757d) !important; }
.fw-normal { font-weight: 400 !important; }
.fw-medium { font-weight: 500 !important; }
.fw-semibold { font-weight: 600 !important; }
.fw-bold { font-weight: 700 !important; }
.fs-5 { font-size: 1.25rem !important; }
.fs-6 { font-size: 1rem !important; }
.small { font-size: 0.875em !important; }
@media (min-width: 768px) {
.text-md-start { text-align: left !important; }
.text-md-center { text-align: center !important; }
.text-md-end { text-align: right !important; }
} }
/* ========================================================================== /* ==========================================================================
@@ -384,6 +529,48 @@ button:focus:not(:focus-visible) {
.text-decoration-underline { .text-decoration-underline {
text-decoration: underline !important; text-decoration: underline !important;
} }
.text-decoration-none {
text-decoration: none !important;
}
/* ==========================================================================
IMAGE UTILITIES
========================================================================== */
.img-fluid {
max-width: 100%;
height: auto;
}
/* ==========================================================================
ALERT COMPONENT (Above-the-fold notifications)
========================================================================== */
.alert {
--bs-alert-padding-x: 1rem;
--bs-alert-padding-y: 1rem;
--bs-alert-margin-bottom: 1rem;
--bs-alert-border-radius: 0.375rem;
position: relative;
padding: var(--bs-alert-padding-y) var(--bs-alert-padding-x);
margin-bottom: var(--bs-alert-margin-bottom);
border: 1px solid transparent;
border-radius: var(--bs-alert-border-radius);
}
.alert-warning {
--bs-alert-color: #664d03;
--bs-alert-bg: #fff3cd;
--bs-alert-border-color: #ffecb5;
color: var(--bs-alert-color);
background-color: var(--bs-alert-bg);
border-color: var(--bs-alert-border-color);
}
.alert-info {
--bs-alert-color: #055160;
--bs-alert-bg: #cff4fc;
--bs-alert-border-color: #b6effb;
color: var(--bs-alert-color);
background-color: var(--bs-alert-bg);
border-color: var(--bs-alert-border-color);
}
/* ========================================================================== /* ==========================================================================
BUTTON CLOSE (Dismiss notification) BUTTON CLOSE (Dismiss notification)

22
Inc/enqueue-scripts.php
View File

@@ -17,12 +17,16 @@ if (!defined('ABSPATH')) {
* Estos CSS se cargan con media="print" y onload="this.media='all'" * Estos CSS se cargan con media="print" y onload="this.media='all'"
* para evitar bloquear el renderizado inicial. * para evitar bloquear el renderizado inicial.
* *
* NOTA: Bootstrap NO está diferido porque causa CLS alto (0.954). * NOTA: Bootstrap AHORA está diferido porque CriticalBootstrapService
* Bootstrap debe cargar bloqueante para evitar layout shifts. * inyecta las clases críticas (grid, navbar, utilities) inline en <head>.
* Esto permite diferir el bootstrap-subset.min.css sin causar CLS.
* *
* @since 1.0.21 * @since 1.0.21
* @updated 1.0.23 - Bootstrap diferido gracias a critical-bootstrap.css
*/ */
define('ROI_DEFERRED_CSS', [ define('ROI_DEFERRED_CSS', [
// Bootstrap (diferido - critical inline via CriticalBootstrapService)
'roi-bootstrap',
// Componentes específicos (below the fold) // Componentes específicos (below the fold)
'roi-badges', 'roi-badges',
'roi-pagination', 'roi-pagination',
@@ -100,18 +104,24 @@ add_action('wp_enqueue_scripts', 'roi_enqueue_fonts', 1);
* - Reducción: 36% menos CSS para parsear * - Reducción: 36% menos CSS para parsear
* - Generado con PurgeCSS: node build-bootstrap-subset.js * - Generado con PurgeCSS: node build-bootstrap-subset.js
* *
* NOTA: Bootstrap debe cargar BLOQUEANTE (media='all'). * NOTA: Bootstrap AHORA es DIFERIDO (media='print' + onload).
* Diferirlo causa CLS alto (0.954) por layout shifts. * CriticalBootstrapService inyecta inline las clases críticas:
* - Grid system (row, col-*)
* - Navbar component
* - Flexbox utilities
* - Spacing utilities
* Esto evita CLS mientras mejora LCP significativamente.
*/ */
function roi_enqueue_bootstrap() { function roi_enqueue_bootstrap() {
// Bootstrap CSS SUBSET - BLOQUEANTE para evitar CLS // Bootstrap CSS SUBSET - DIFERIDO (critical CSS es inline)
// Original: 227KB -> Subset: 145KB (36% reducción) // Original: 227KB -> Subset: 145KB (36% reducción)
// Critical: ~20KB inline en <head> via CriticalBootstrapService
wp_enqueue_style( wp_enqueue_style(
'roi-bootstrap', 'roi-bootstrap',
get_template_directory_uri() . '/Assets/Vendor/Bootstrap/Css/bootstrap-subset.min.css', get_template_directory_uri() . '/Assets/Vendor/Bootstrap/Css/bootstrap-subset.min.css',
array('roi-fonts'), array('roi-fonts'),
'5.3.2-subset', '5.3.2-subset',
'all' // Bloqueante - diferirlo causa CLS alto 'print' // DIFERIDO - critical CSS inline evita CLS
); );
// Bootstrap Icons CSS - SUBSET OPTIMIZADO (Fase 4.1 PageSpeed) // Bootstrap Icons CSS - SUBSET OPTIMIZADO (Fase 4.1 PageSpeed)

5
Inc/performance.php
View File

@@ -336,10 +336,11 @@ add_filter( 'wp_resource_hints', 'roi_add_resource_hints', 10, 2 );
function roi_preload_critical_resources() { function roi_preload_critical_resources() {
$theme_uri = get_template_directory_uri(); $theme_uri = get_template_directory_uri();
// Preload del CSS de Bootstrap (crítico para el layout) // Preload del CSS de Bootstrap SUBSET (crítico para el layout)
// IMPORTANTE: Debe coincidir con el archivo encolado en enqueue-scripts.php
printf( printf(
'<link rel="preload" href="%s" as="style">' . "\n", '<link rel="preload" href="%s" as="style">' . "\n",
esc_url( $theme_uri . '/Assets/Vendor/Bootstrap/Css/bootstrap.min.css' ) esc_url( $theme_uri . '/Assets/Vendor/Bootstrap/Css/bootstrap-subset.min.css' )
); );
// Preload del CSS de fuentes (crítico para evitar FOIT/FOUT) // Preload del CSS de fuentes (crítico para evitar FOIT/FOUT)

17
functions-addon.php
View File

@@ -283,17 +283,24 @@ function roi_render_component(string $componentName): string {
* Registra hooks para inyectar CSS crítico en <head> * Registra hooks para inyectar CSS crítico en <head>
* *
* FLUJO: * FLUJO:
* 1. wp_head (priority 1) → CriticalCSSService::render() * 1. wp_head (priority 0) → CriticalBootstrapService::render()
* - Inyecta critical-bootstrap.css inline (grid, navbar, utilities)
* - Permite diferir bootstrap-subset.min.css
*
* 2. wp_head (priority 1) → CriticalCSSService::render()
* - Consulta BD por componentes con is_critical=true * - Consulta BD por componentes con is_critical=true
* - Genera CSS usando los métodos públicos generateCSS() de los Renderers * - Genera CSS usando los métodos públicos generateCSS() de los Renderers
* - Output: <style id="roi-critical-css">...</style> * - Output: <style id="roi-critical-css">...</style>
* *
* NOTA: CriticalBootstrapService está DESHABILITADO porque diferir * IMPORTANTE: CriticalBootstrapService HABILITADO para mejorar LCP.
* Bootstrap causa CLS alto (0.954). Bootstrap carga bloqueante. * critical-bootstrap.css incluye grid system para evitar CLS.
*
* Cuando los Renderers ejecutan, detectan is_critical y omiten CSS inline.
*/ */
add_action('after_setup_theme', function() { add_action('after_setup_theme', function() {
// 1. Critical Bootstrap CSS (priority 0) - inline bootstrap crítico
$criticalBootstrapService = \ROITheme\Shared\Infrastructure\Services\CriticalBootstrapService::getInstance();
add_action('wp_head', [$criticalBootstrapService, 'render'], 0);
// 2. Critical Component CSS (priority 1) - CSS de componentes críticos
$criticalCSSService = roi_get_critical_css_service(); $criticalCSSService = roi_get_critical_css_service();
$hooksRegistrar = new \ROITheme\Shared\Infrastructure\Wordpress\CriticalCSSHooksRegistrar($criticalCSSService); $hooksRegistrar = new \ROITheme\Shared\Infrastructure\Wordpress\CriticalCSSHooksRegistrar($criticalCSSService);
$hooksRegistrar->register(); $hooksRegistrar->register();