diff --git a/packages/utils/src/config.ts b/packages/utils/src/config.ts
index c79458f..1c8333c 100644
--- a/packages/utils/src/config.ts
+++ b/packages/utils/src/config.ts
@@ -8,7 +8,7 @@ export interface AppConfig {
   appName: string;
   appVersion: string;
   environment: 'development' | 'staging' | 'production';
-  port: number;
+  port?: number;
   
   // Institution
   institutionBIC: string;
@@ -58,39 +58,39 @@ export function loadConfig(): AppConfig {
   return {
     appName: process.env.APP_NAME || 'Brazil SWIFT Operations',
     appVersion: process.env.APP_VERSION || '1.0.0',
-    environment: (process.env.NODE_ENV as any) || 'development',
-    port: parseInt(process.env.PORT || '3000', 10),
+    environment: ((typeof process !== 'undefined' ? process.env?.NODE_ENV : undefined) as any) || 'development',
+    port: typeof process !== 'undefined' ? parseInt(process.env?.PORT || '3000', 10) : 3000,
     
-    institutionBIC: process.env.INSTITUTION_BIC || 'ESTRBRRJ',
-    institutionName: process.env.INSTITUTION_NAME || 'Strategy Investimentos S/A CVC',
-    institutionCountry: process.env.INSTITUTION_COUNTRY || 'BR',
+    institutionBIC: (typeof process !== 'undefined' ? process.env?.INSTITUTION_BIC : undefined) || 'ESTRBRRJ',
+    institutionName: (typeof process !== 'undefined' ? process.env?.INSTITUTION_NAME : undefined) || 'Strategy Investimentos S/A CVC',
+    institutionCountry: (typeof process !== 'undefined' ? process.env?.INSTITUTION_COUNTRY : undefined) || 'BR',
     
-    reportingThresholdUSD: parseFloat(process.env.REPORTING_THRESHOLD_USD || '10000'),
-    amlStructuringThresholdUSD: parseFloat(process.env.AML_STRUCTURING_THRESHOLD_USD || '10000'),
-    amlStructuringWindowDays: parseInt(process.env.AML_STRUCTURING_WINDOW_DAYS || '30', 10),
+    reportingThresholdUSD: parseFloat((typeof process !== 'undefined' ? process.env?.REPORTING_THRESHOLD_USD : undefined) || '10000'),
+    amlStructuringThresholdUSD: parseFloat((typeof process !== 'undefined' ? process.env?.AML_STRUCTURING_THRESHOLD_USD : undefined) || '10000'),
+    amlStructuringWindowDays: parseInt((typeof process !== 'undefined' ? process.env?.AML_STRUCTURING_WINDOW_DAYS : undefined) || '30', 10),
     
-    iofRateInbound: parseFloat(process.env.IOF_RATE_INBOUND || '0.0038'),
-    iofRateOutbound: parseFloat(process.env.IOF_RATE_OUTBOUND || '0.035'),
+    iofRateInbound: parseFloat((typeof process !== 'undefined' ? process.env?.IOF_RATE_INBOUND : undefined) || '0.0038'),
+    iofRateOutbound: parseFloat((typeof process !== 'undefined' ? process.env?.IOF_RATE_OUTBOUND : undefined) || '0.035'),
     
-    fxRateProvider: (process.env.FX_RATE_PROVIDER as any) || 'hardcoded',
-    fxRateCacheTTL: parseInt(process.env.FX_RATE_CACHE_TTL || '3600', 10),
+    fxRateProvider: ((typeof process !== 'undefined' ? process.env?.FX_RATE_PROVIDER : undefined) as any) || 'hardcoded',
+    fxRateCacheTTL: parseInt((typeof process !== 'undefined' ? process.env?.FX_RATE_CACHE_TTL : undefined) || '3600', 10),
     
-    databaseUrl: process.env.DATABASE_URL,
-    databasePoolSize: parseInt(process.env.DATABASE_POOL_SIZE || '10', 10),
+    databaseUrl: typeof process !== 'undefined' ? process.env?.DATABASE_URL : undefined,
+    databasePoolSize: parseInt((typeof process !== 'undefined' ? process.env?.DATABASE_POOL_SIZE : undefined) || '10', 10),
     
-    logLevel: (process.env.LOG_LEVEL as any) || 'info',
-    logFormat: (process.env.LOG_FORMAT as any) || 'json',
+    logLevel: ((typeof process !== 'undefined' ? process.env?.LOG_LEVEL : undefined) as any) || 'info',
+    logFormat: ((typeof process !== 'undefined' ? process.env?.LOG_FORMAT : undefined) as any) || 'json',
     
-    enableAuth: process.env.ENABLE_AUTH === 'true',
-    sessionSecret: process.env.SESSION_SECRET,
-    jwtSecret: process.env.JWT_SECRET,
+    enableAuth: (typeof process !== 'undefined' ? process.env?.ENABLE_AUTH : undefined) === 'true',
+    sessionSecret: typeof process !== 'undefined' ? process.env?.SESSION_SECRET : undefined,
+    jwtSecret: typeof process !== 'undefined' ? process.env?.JWT_SECRET : undefined,
     
-    bcbReportingEnabled: process.env.BCB_REPORTING_ENABLED === 'true',
-    bcbReportingApiUrl: process.env.BCB_REPORTING_API_URL,
-    bcbReportingApiKey: process.env.BCB_REPORTING_API_KEY,
+    bcbReportingEnabled: (typeof process !== 'undefined' ? process.env?.BCB_REPORTING_ENABLED : undefined) === 'true',
+    bcbReportingApiUrl: typeof process !== 'undefined' ? process.env?.BCB_REPORTING_API_URL : undefined,
+    bcbReportingApiKey: typeof process !== 'undefined' ? process.env?.BCB_REPORTING_API_KEY : undefined,
     
-    auditRetentionDays: parseInt(process.env.AUDIT_RETENTION_DAYS || '2555', 10), // 7 years
-    auditAutoDelete: process.env.AUDIT_AUTO_DELETE === 'true',
+    auditRetentionDays: parseInt((typeof process !== 'undefined' ? process.env?.AUDIT_RETENTION_DAYS : undefined) || '2555', 10), // 7 years
+    auditAutoDelete: (typeof process !== 'undefined' ? process.env?.AUDIT_AUTO_DELETE : undefined) === 'true',
   };
 }