feat: update border styles to use CSS variables for consistency across components

src/app/features/componentes-test/pages/reutilizables-test-page/reutilizables-test-page.component.scss

@@ -77,7 +77,7 @@ h1 {
 
 .modal-showcase__result {
   padding: 0.875rem 1rem;
-  border: 1px dashed rgba(32, 32, 32, 0.14);
+  border: 1px dashed var(--border-color);
   border-radius: 0.875rem;
   background: linear-gradient(180deg, rgba(248, 248, 248, 0.92), rgba(255, 255, 255, 0.98));
   color: #495057;
@@ -231,7 +231,7 @@ h1 {
       justify-content: center;
       height: 120px;
       border-radius: 8px;
-      border: 1px solid #dee2e6;
+      border: 1px solid var(--border-color);
       padding: 1rem;
       overflow: hidden;
       box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
@@ -281,7 +281,7 @@ h1 {
     display: flex;
     flex-direction: column;
     border-radius: 8px;
-    border: 1px solid #dee2e6;
+    border: 1px solid var(--border-color);
     overflow: hidden;
     background-color: #ffffff;
     transition:
@@ -296,7 +296,7 @@ h1 {
     &__preview {
       height: 80px;
       width: 100%;
-      border-bottom: 1px solid #dee2e6;
+      border-bottom: 1px solid var(--border-color);
       transition: opacity 0.2s ease;
 
       &:hover {
@@ -337,7 +337,7 @@ h1 {
     background-color: #eaeaea;
     padding: 1.5rem;
     border-radius: 8px;
-    border: 1px solid #dee2e6;
+    border: 1px solid var(--border-color);
   }
 
   &__row {

src/app/features/store/components/product-attribute-selector/product-attribute-selector.component.scss

@@ -54,7 +54,7 @@
   }
 
   &__text-option {
-    border: 1px solid #dcdcdc;
+    border: 1px solid var(--border-color);
     background: #ffffff;
     color: #666666;
     transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;

src/app/features/store/pages/account-page/components/purchase-item/purchase-item.scss

@@ -1,6 +1,6 @@
 :host {
   display: block;
-  border-bottom: 1px solid #dddddd;
+  border-bottom: 1px solid var(--border-color);
 }
 
 :host(:last-child) {
@@ -24,7 +24,7 @@
   aspect-ratio: 4 / 3;
   border-radius: 5px 0 0 5px;
   background-color: #ffffff;
-  border: 1px solid #eaeaea;
+  border: 1px solid var(--border-color);
   overflow: hidden;
 
   img {

src/app/features/store/pages/account-page/components/purchase-list/purchase-list.scss

@@ -23,7 +23,7 @@
   justify-content: space-between;
   align-items: center;
   padding: 1rem 0;
-  border-bottom: 1px solid #DDDDDD;
+  border-bottom: 1px solid var(--border-color);
 }
 
 .skeleton-item:last-child {

src/app/features/store/pages/account-page/pages/tickets-page/tickets-page.scss

@@ -27,7 +27,7 @@
 .tickets-list__generating-spinner {
   width: 24px;
   height: 24px;
-  border: 3px solid #dce8e0;
+  border: 3px solid var(--border-color);
   border-top-color: var(--tenant-primary, #009933);
   border-radius: 50%;
   animation: tickets-spinner 0.75s linear infinite;
@@ -39,7 +39,7 @@
   align-items: center;
   justify-content: space-between;
   padding-bottom: 12px;
-  border-bottom: 1px solid #dddddd;
+  border-bottom: 1px solid var(--border-color);
 }
 
 .tickets-list__header--inactive {
@@ -89,7 +89,7 @@
 }
 
 .tickets-list app-ticket {
-  border-bottom: 1px solid #dddddd;
+  border-bottom: 1px solid var(--border-color);
 }
 
 .tickets-list__empty {
@@ -104,7 +104,7 @@
   align-items: center;
   justify-content: space-between;
   padding-bottom: 12px;
-  border-bottom: 1px solid #dddddd;
+  border-bottom: 1px solid var(--border-color);
 }
 
 .tickets-list__skeleton-selection,
@@ -130,7 +130,7 @@
   align-items: center;
   gap: 16px;
   padding: 16px 0;
-  border-bottom: 1px solid #dddddd;
+  border-bottom: 1px solid var(--border-color);
 }
 
 .tickets-list__skeleton-check,

src/app/features/store/pages/checkout-page/checkout-page.component.scss

@@ -64,7 +64,7 @@
 .checkout-page__spinner {
   width: 3rem;
   height: 3rem;
-  border: 0.25rem solid rgba(32, 32, 32, 0.08);
+  border: 0.25rem solid var(--border-color);
   border-top-color: var(--tenant-primary);
   border-radius: 50%;
   animation: checkout-page-spin 0.8s linear infinite;

src/app/features/store/pages/help-page/pages/faq-page/faq-page.scss

@@ -15,7 +15,7 @@
 
 .faq-page__empty {
   padding: 1rem 0;
-  border-bottom: 1px solid #dedede;
+  border-bottom: 1px solid var(--border-color);
   color: #888888;
   font-size: 0.8125rem;
 }

src/app/features/store/pages/login-page/login-page.component.scss

@@ -31,6 +31,6 @@
 .login-page__divider-dot {
   width: 16px;
   height: 16px;
-  border-color: #d9d9d9 !important;
+  border-color: var(--border-color) !important;
   background-color: #ffffff;
 }

src/app/features/store/pages/product-detail-page/product-detail-page.component.scss

@@ -14,7 +14,7 @@
   }
 
   &__divider {
-    border-top: 1px solid #e6e6e6;
+    border-top: 1px solid var(--border-color);
   }
 
   &__title {
@@ -25,7 +25,7 @@
   }
 
   &__title-price-divider {
-    border-top: 1px solid #e6e6e6;
+    border-top: 1px solid var(--border-color);
   }
 
   &__price-group {