Bezbednost: ispravke kontrole pristupa u admin i handler sloju

web/templates/stranice/prodaja.html

@@ -4,11 +4,6 @@
 
 {{define "dodatni-css"}}
 <style>
-    @keyframes slideDown {
-        from { opacity: 0; transform: translateY(-10px); }
-        to   { opacity: 1; transform: translateY(0); }
-    }
-
     .poruka-animacija { animation: slideDown 0.3s ease forwards; }
 
     .prodaja-tabela tbody tr:nth-child(1)  { animation-delay: 0.04s; }
@@ -57,24 +52,12 @@
             <input type="text" name="pretraga" value="{{.Pretraga}}"
                 placeholder="Pretraži po broju naloga..."
                 style="flex:1;">
-            <button type="submit"
-                style="padding:8px 14px;background:var(--kartica);border:0.5px solid var(--ivica);border-radius:8px;font-size:13px;color:var(--tekst-sporedni);cursor:pointer;white-space:nowrap;transition:background 0.2s;"
-                onmouseover="this.style.background='var(--pozadina)'" onmouseout="this.style.background='var(--kartica)'">
-                Pretraži
-            </button>
+            <button type="submit" class="btn-sekundarno" style="white-space:nowrap;">Pretraži</button>
             {{if .Pretraga}}
-            <a href="/prodaja"
-                style="padding:8px 14px;border:0.5px solid var(--ivica);border-radius:8px;font-size:13px;color:var(--tekst-sporedni);text-decoration:none;white-space:nowrap;transition:background 0.2s;"
-                onmouseover="this.style.background='var(--pozadina)'" onmouseout="this.style.background=''">
-                ✕ Resetuj
-            </a>
+            <a href="/prodaja" class="btn-sekundarno" style="white-space:nowrap;">✕ Resetuj</a>
             {{end}}
         </form>
-        <a href="/prodaja/nova"
-            style="padding:8px 16px;background:var(--sb-akcent);color:#fff;border-radius:8px;font-size:14px;font-weight:500;text-decoration:none;white-space:nowrap;transition:opacity 0.2s;"
-            onmouseover="this.style.opacity='0.85'" onmouseout="this.style.opacity='1'">
-            + Nova prodaja
-        </a>
+        <a href="/prodaja/nova" class="btn-primarno">+ Nova prodaja</a>
     </div>
 
     <!-- desktop tabela -->
@@ -92,9 +75,7 @@
                 </thead>
                 <tbody>
                     {{range .Nalozi}}
-                    <tr class="animiraj" style="border-bottom:0.5px solid var(--ivica);transition:background 0.15s;"
-                        onmouseover="this.style.background='var(--pozadina)'"
-                        onmouseout="this.style.background=''">
+                    <tr class="animiraj red-tabele">
                         <td style="padding:12px 16px;font-size:13px;font-family:monospace;color:var(--tekst-glavni);">
                             {{.BrojNaloga}}
                         </td>