style: Karty firm i tagi zgodne ze źródłem (Sprint 6)

Zmiany:
- Karty firm: border-radius 8px → 0 (ostre rogi)
- Karty firm: border #e0e4eb → #E4E4E4
- Tagi kategorii: niebieski bg → szary (#EDF0F5)
- Tagi kategorii: biały tekst → ciemny (#464646)
- Text primary: #1e293b → #303030
- Text secondary: #64748b → #464646

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

templates/base.html

@@ -50,8 +50,8 @@
             --background: #EDF0F5;
             --section-bg: #EDF0F5;
             --surface: #ffffff;
-            --text-primary: #1e293b;
-            --text-secondary: #64748b;
+            --text-primary: #303030;
+            --text-secondary: #464646;
             --border: #e0e4eb;
 
             /* Spacing */

templates/index.html

@@ -675,9 +675,9 @@
 
     .company-card {
         background-color: var(--surface);
-        border-radius: 8px;
+        border-radius: 0;
         padding: var(--spacing-lg);
-        border: 1px solid #e0e4eb;
+        border: 1px solid #E4E4E4;
         transition: var(--transition);
         display: flex;
         flex-direction: column;
@@ -714,13 +714,13 @@
     .company-category {
         display: inline-block;
         padding: var(--spacing-xs) var(--spacing-sm);
-        background-color: var(--primary);
-        color: white;
-        font-size: 11px;
-        font-weight: 600;
+        background-color: #EDF0F5;
+        color: #464646;
+        font-size: 12px;
+        font-weight: 500;
         text-transform: uppercase;
         letter-spacing: 0.5px;
-        border-radius: var(--radius);
+        border-radius: 4px;
         margin-bottom: var(--spacing-sm);
     }