style(ui): maximize topic card images and fix RTL wizard arrows

Frontend-only application of prod_v2 (55e959b, 9e99b46).
Dev docker-compose.yml changes excluded.

frontend/src/components/TopicGrid.tsx

@@ -5,39 +5,62 @@ import { faNum } from "../lib/formatters";
 import { cn } from "../lib/utils";
 
 export interface TopicGridProps {
-  topics: Topic[]; // از store (API) می‌آید
+  topics: Topic[];
   selectedTopic?: string;
   onSelect: (topicName: string) => void;
-  showCounts?: boolean; // تعداد تأمین‌کننده‌های هر تاپیک
-  counts?: Record<string, number>; // topic name → count
+  showCounts?: boolean;
+  counts?: Record<string, number>;
 }
 
-// گرید تاپیک‌ها (از /material-categories — نه لیست ثابت)
 export function TopicGrid({ topics, selectedTopic, onSelect, showCounts = false, counts }: TopicGridProps) {
   if (!topics.length) {
     return <EmptyState emoji="🗂️" text="در حال بارگذاری دسته‌بندی‌ها…" />;
   }
+
   return (
-    <div className="grid grid-cols-2 gap-3 sm:grid-cols-3 lg:grid-cols-4">
+    <div className="grid grid-cols-2 gap-3 sm:gap-4 sm:grid-cols-3 lg:grid-cols-4">
       {topics.map((t) => {
         const selected = selectedTopic != null && normalize(selectedTopic) === normalize(t.name);
         const count = counts?.[t.name] ?? 0;
+
         return (
           <button
             type="button"
             key={t.key}
-            className={cn("topic-card flex flex-col items-center justify-center p-4", selected && "selected")}
             onClick={() => onSelect(t.name)}
+            className={cn(
+              "group relative flex flex-col items-center justify-between rounded-2xl border bg-white p-2.5 sm:p-4 text-center transition-all duration-200 cursor-pointer shadow-xs active:scale-[0.98] overflow-hidden",
+              selected
+                ? "border-blue-600 ring-2 ring-blue-600/25 shadow-md bg-blue-50/20"
+                : "border-slate-200 hover:border-blue-300 hover:shadow-md"
+            )}
           >
-            {/* استفاده از استایل اینلاین برای تضمین تغییر سایز و دور زدن CSSهای قبلی */}
+            {/* کادر تصویر بسیار بزرگ‌تر شده برای پر کردن تمام فضای مربع */}
+            <div className="flex h-36 sm:h-48 md:h-52 w-full items-center justify-center overflow-hidden rounded-xl bg-slate-50/50">
               <img
                 src={t.icon}
-              alt="" 
-              style={{ width: '130px', height: '80px', objectFit: 'contain' }}
-              className="mb-2" 
+                alt={t.name}
+                className="h-full w-full object-contain transform scale-115 group-hover:scale-125 transition-transform duration-300 drop-shadow-xs"
+                loading="lazy"
               />
-            <div className="t-name text-[13px] font-semibold">{t.name}</div>
-            {showCounts && <div className="t-count text-[11px] text-muted">{faNum(count)} تأمین‌کننده</div>}
+            </div>
+
+            {/* بخش عنوان و تعداد */}
+            <div className="mt-3 w-full pb-1">
+              <div
+                className={cn(
+                  "truncate text-[13px] sm:text-[15px] font-bold transition-colors",
+                  selected ? "text-blue-600" : "text-slate-800 group-hover:text-blue-600"
+                )}
+              >
+                {t.name}
+              </div>
+              {showCounts && (
+                <div className="mt-0.5 truncate text-[11px] sm:text-xs text-slate-400 font-medium">
+                  {faNum(count)} تأمین‌کننده
+                </div>
+              )}
+            </div>
           </button>
         );
       })}

frontend/src/pages/Wizard/WizardPage.tsx

@@ -1,5 +1,6 @@
 import { useEffect, useMemo, useState } from "react";
 import { Link, useNavigate, useSearchParams } from "react-router-dom";
+import { ChevronRight, ChevronLeft, Check } from "lucide-react";
 import { toast } from "sonner";
 import type { LineItem, Quote } from "../../lib/types";
 import { api, nextId } from "../../lib/api";
@@ -453,17 +454,17 @@ export function WizardPage() {
           </div>
         )}
 
-        {/* پاورقی ویزارد — طراحی بازسازی‌شده با ناوبری استاندارد */}
+        {/* پاورقی ویزارد — با آیکون‌های استاندارد و جهت‌گیری دقیق RTL */}
         <div className="mt-5 flex items-center justify-between rounded-xl border border-line bg-panel p-3.5 shadow-sm">
-          {/* دکمه مرحله قبلی */}
+          {/* دکمه مرحله قبلی (فلش رو به راست = بازگشت در فارسی) */}
           <div>
             {currentStep > 1 && (
               <button
                 type="button"
                 onClick={() => goToStep(currentStep - 1)}
-                className="inline-flex items-center gap-1.5 px-4 py-2 rounded-xl border border-gray-300 dark:border-zinc-700 bg-white dark:bg-zinc-800 text-gray-700 dark:text-zinc-200 hover:bg-gray-50 dark:hover:bg-zinc-700 text-sm font-medium transition-colors shadow-xs"
+                className="inline-flex items-center gap-1.5 px-4 py-2 rounded-xl border border-slate-200 dark:border-zinc-700 bg-white dark:bg-zinc-800 text-slate-700 dark:text-zinc-200 hover:bg-slate-50 dark:hover:bg-zinc-700 text-sm font-medium transition-colors shadow-xs cursor-pointer"
               >
-                <span>›</span>
+                <ChevronRight className="h-4 w-4" />
                 <span>قبلی</span>
               </button>
             )}
@@ -473,19 +474,20 @@ export function WizardPage() {
           <div className="flex items-center gap-3">
             <Link
               to="/"
-              className="inline-flex items-center justify-center px-4 py-2 rounded-xl text-sm font-medium text-gray-500 hover:text-gray-700 hover:bg-gray-100 dark:text-zinc-400 dark:hover:text-zinc-200 dark:hover:bg-zinc-800 transition-colors no-underline"
+              className="inline-flex items-center justify-center px-4 py-2 rounded-xl text-sm font-medium text-slate-500 hover:text-slate-700 hover:bg-slate-100 dark:text-zinc-400 dark:hover:text-zinc-200 dark:hover:bg-zinc-800 transition-colors no-underline"
             >
               انصراف
             </Link>
 
+            {/* دکمه مرحله بعدی (فلش رو به چپ = پیشروی در فارسی) */}
             {currentStep < TOTAL_STEPS && (
               <button
                 type="button"
                 onClick={next}
-                className="inline-flex items-center gap-2 px-6 py-2 rounded-xl bg-blue-600 hover:bg-blue-700 active:bg-blue-800 text-white text-sm font-semibold shadow-sm hover:shadow transition-all duration-150"
+                className="inline-flex items-center gap-1.5 px-6 py-2 rounded-xl bg-blue-600 hover:bg-blue-700 active:bg-blue-800 text-white text-sm font-semibold shadow-sm hover:shadow transition-all duration-150 cursor-pointer"
               >
                 <span>بعدی</span>
-                <span className="text-xs">‹</span>
+                <ChevronLeft className="h-4 w-4" />
               </button>
             )}
 
@@ -493,10 +495,10 @@ export function WizardPage() {
               <button
                 type="button"
                 onClick={() => void save()}
-                className="inline-flex items-center gap-2 px-6 py-2 rounded-xl bg-emerald-600 hover:bg-emerald-700 active:bg-emerald-800 text-white text-sm font-semibold shadow-sm hover:shadow transition-all duration-150"
+                className="inline-flex items-center gap-1.5 px-6 py-2 rounded-xl bg-emerald-600 hover:bg-emerald-700 active:bg-emerald-800 text-white text-sm font-semibold shadow-sm hover:shadow transition-all duration-150 cursor-pointer"
               >
                 <span>ذخیره پیشنهاد</span>
-                <span className="text-xs">✓</span>
+                <Check className="h-4 w-4" />
               </button>
             )}
           </div>