diff --git a/Public/AdsensePlacement/Infrastructure/Services/ContentAdInjector.php b/Public/AdsensePlacement/Infrastructure/Services/ContentAdInjector.php
index c9e40677..7b02df25 100644
--- a/Public/AdsensePlacement/Infrastructure/Services/ContentAdInjector.php
+++ b/Public/AdsensePlacement/Infrastructure/Services/ContentAdInjector.php
@@ -52,11 +52,20 @@ final class ContentAdInjector
         // Determinar modo de operacion
         $mode = $this->settings['incontent_advanced']['incontent_mode'] ?? 'paragraphs_only';
 
+        // DEBUG TEMPORAL
+        $forbiddenZones = $this->mapForbiddenZones($content);
+        $debugInfo = sprintf(
+            '<!-- ROI_DEBUG: mode=%s, forbidden_zones=%d, content_len=%d -->',
+            $mode,
+            count($forbiddenZones),
+            strlen($content)
+        );
+
         if ($mode === 'paragraphs_only') {
-            return $this->injectParagraphsOnly($content);
+            return $debugInfo . $this->injectParagraphsOnly($content);
         }
 
-        return $this->injectAdvanced($content);
+        return $debugInfo . $this->injectAdvanced($content);
     }
 
     /**
@@ -231,50 +240,55 @@ final class ContentAdInjector
     private function mapForbiddenZones(string $content): array
     {
         $zones = [];
+        $contentLength = strlen($content);
 
-        // Tablas: <table>...</table>
-        if (preg_match_all('/<table[^>]*>.*?<\/table>/is', $content, $matches, PREG_OFFSET_CAPTURE)) {
-            foreach ($matches[0] as $match) {
-                $zones[] = [
-                    'start' => $match[1],
-                    'end' => $match[1] + strlen($match[0]),
-                ];
-            }
-        }
+        // Tablas: buscar cada <table> y su </table> correspondiente
+        $this->findMatchingTags($content, 'table', $zones);
 
-        // Iframes (YouTube, Vimeo, etc): <iframe>...</iframe>
-        if (preg_match_all('/<iframe[^>]*>.*?<\/iframe>/is', $content, $matches, PREG_OFFSET_CAPTURE)) {
-            foreach ($matches[0] as $match) {
-                $zones[] = [
-                    'start' => $match[1],
-                    'end' => $match[1] + strlen($match[0]),
-                ];
-            }
-        }
+        // Iframes (YouTube, Vimeo, etc)
+        $this->findMatchingTags($content, 'iframe', $zones);
 
-        // Divs con clase de embed/video (wp-block-embed, youtube, video-container, etc)
-        if (preg_match_all('/<div[^>]*class="[^"]*(?:embed|video|youtube|vimeo|player)[^"]*"[^>]*>.*?<\/div>/is', $content, $matches, PREG_OFFSET_CAPTURE)) {
+        // Figure con clase wp-block-embed (embeds de WordPress)
+        if (preg_match_all('/<figure[^>]*class="[^"]*wp-block-embed[^"]*"[^>]*>/i', $content, $matches, PREG_OFFSET_CAPTURE)) {
             foreach ($matches[0] as $match) {
-                $zones[] = [
-                    'start' => $match[1],
-                    'end' => $match[1] + strlen($match[0]),
-                ];
-            }
-        }
-
-        // Figure con iframe (embeds de WordPress)
-        if (preg_match_all('/<figure[^>]*class="[^"]*wp-block-embed[^"]*"[^>]*>.*?<\/figure>/is', $content, $matches, PREG_OFFSET_CAPTURE)) {
-            foreach ($matches[0] as $match) {
-                $zones[] = [
-                    'start' => $match[1],
-                    'end' => $match[1] + strlen($match[0]),
-                ];
+                $startPos = $match[1];
+                $closePos = strpos($content, '</figure>', $startPos);
+                if ($closePos !== false) {
+                    $zones[] = [
+                        'start' => $startPos,
+                        'end' => $closePos + strlen('</figure>'),
+                    ];
+                }
             }
         }
 
         return $zones;
     }
 
+    /**
+     * Encuentra tags de apertura y cierre correspondientes
+     */
+    private function findMatchingTags(string $content, string $tagName, array &$zones): void
+    {
+        $openTag = '<' . $tagName;
+        $closeTag = '</' . $tagName . '>';
+        $offset = 0;
+
+        while (($startPos = stripos($content, $openTag, $offset)) !== false) {
+            // Buscar el cierre correspondiente
+            $closePos = stripos($content, $closeTag, $startPos);
+            if ($closePos !== false) {
+                $zones[] = [
+                    'start' => $startPos,
+                    'end' => $closePos + strlen($closeTag),
+                ];
+                $offset = $closePos + strlen($closeTag);
+            } else {
+                break;
+            }
+        }
+    }
+
     /**
      * Verifica si una posicion esta dentro de una zona prohibida
      */