feat(quiz): replace emojis with lucide-react icons

frontend/components/quiz/CountdownTimer.tsx

@@ -3,6 +3,7 @@
 import { useEffect, useState } from 'react';
 import { useTranslations } from 'next-intl';
 import { cn } from '@/lib/utils';
+import { AlertTriangle } from 'lucide-react';
 
 interface CountdownTimerProps {
   timeLimitSeconds: number;
@@ -105,7 +106,7 @@ export function CountdownTimer({
         <p className="text-xs mt-2 font-medium">
           {percentage <= 10 ? (
             <>
-              <span aria-hidden="true">⚠️</span> {t('almostDone')}
+              <AlertTriangle className="w-4 h-4 inline text-amber-500" /> {t('almostDone')}
             </>
           ) : (
             <>

frontend/components/quiz/QuizCard.tsx

@@ -3,6 +3,7 @@
 import { useTranslations } from 'next-intl';
 import { Link } from '@/i18n/routing';
 import { Badge } from '@/components/ui/badge';
+import { FileText, Clock } from 'lucide-react';
 
 interface QuizCardProps {
   quiz: {
@@ -44,12 +45,16 @@ export function QuizCard({ quiz, userProgress }: QuizCardProps) {
           {quiz.description}
         </p>
       )}
-      <div className="flex gap-3 text-xs text-gray-500 mb-3">
-        <span>📝 {quiz.questionsCount} {t('questions')}</span>
-        <span>
-          ⏱️ {Math.floor((quiz.timeLimitSeconds ?? quiz.questionsCount * 30) / 60)} {t('min')}
-        </span>
-      </div>
+        <div className="flex gap-3 text-xs text-gray-500 mb-3">
+          <span className="flex items-center gap-1">
+            <FileText className="w-3.5 h-3.5 text-blue-500 dark:text-blue-400" />
+            {quiz.questionsCount} {t('questions')}
+          </span>
+          <span className="flex items-center gap-1">
+            <Clock className="w-3.5 h-3.5 text-blue-500 dark:text-blue-400" />
+            {Math.floor((quiz.timeLimitSeconds ?? quiz.questionsCount * 30) / 60)} {t('min')}
+          </span>
+        </div>
       </div>
       {userProgress && (
     <div className="mb-6">

frontend/components/quiz/QuizContainer.tsx

@@ -17,6 +17,7 @@ import { savePendingQuizResult } from '@/lib/quiz/guest-quiz';
 import type { QuizQuestionClient } from '@/db/queries/quiz';
 import { ConfirmModal } from '@/components/ui/confirm-modal';
 import { Button } from '@/components/ui/button';
+import { FileText, Ban, AlertTriangle, Clock } from 'lucide-react';
 
 interface Answer {
   questionId: string;
@@ -380,8 +381,8 @@ const confirmQuit = () => {
         </h2>
 
         <div className="space-y-4 text-gray-700 dark:text-gray-300">
-          <div className="flex gap-3">
-            <span className="text-xl">📝</span>
+                   <div className="flex gap-3">
+            <FileText className="w-5 h-5 text-blue-500 dark:text-blue-400 flex-shrink-0 mt-0.5" />
             <div>
               <p className="font-medium">{tRules('general.title')}</p>
               <p className="text-sm text-gray-600 dark:text-gray-400">
@@ -391,7 +392,7 @@ const confirmQuit = () => {
           </div>
 
           <div className="flex gap-3">
-            <span className="text-xl">🚫</span>
+            <Ban className="w-5 h-5 text-red-500 dark:text-red-400 flex-shrink-0 mt-0.5" />
             <div>
               <p className="font-medium">{tRules('forbidden.title')}</p>
               <ul className="text-sm text-gray-600 dark:text-gray-400 list-disc list-inside space-y-1">
@@ -404,17 +405,16 @@ const confirmQuit = () => {
           </div>
 
           <div className="flex gap-3">
-            <span className="text-xl">⚠️</span>
+            <AlertTriangle className="w-5 h-5 text-amber-500 dark:text-amber-400 flex-shrink-0 mt-0.5" />
             <div>
               <p className="font-medium">{tRules('control.title')}</p>
               <p className="text-sm text-gray-600 dark:text-gray-400">
                 {tRules('control.description')}
               </p>
             </div>
           </div>
-
           <div className="flex gap-3">
-            <span className="text-xl">⏱️</span>
+            <Clock className="w-5 h-5 text-blue-500 dark:text-blue-400 flex-shrink-0 mt-0.5" />
             <div>
               <p className="font-medium">{tRules('time.title')}</p>
               <p className="text-sm text-gray-600 dark:text-gray-400">

frontend/components/quiz/QuizProgress.tsx

@@ -2,6 +2,7 @@
 
 import { useTranslations } from 'next-intl';
 import { cn } from '@/lib/utils';
+import { Check, X } from 'lucide-react';
 
 interface Answer {
   questionId: string;
@@ -90,7 +91,7 @@ export function QuizProgress({ current, total, answers }: QuizProgressProps) {
             >
               {isAnswered ? (
                 <span className="text-white font-bold">
-                  {isCorrect ? '✓' : '✗'}
+                  {isCorrect ? <Check className="w-3 h-3" /> : <X className="w-3 h-3" />}
                 </span>
               ) : (
                 <span

frontend/components/quiz/QuizQuestion.tsx

@@ -6,6 +6,7 @@ import { RadioGroup, RadioGroupItem } from '@/components/ui/radio-group';
 import { Button } from '@/components/ui/button';
 import ExplanationRenderer from './ExplanationRenderer';
 import { cn } from '@/lib/utils';
+import { Check, X, Lightbulb } from 'lucide-react';
 
 interface QuizQuestionProps {
   question: QuizQuestionClient;
@@ -66,12 +67,12 @@ export function QuizQuestion({
               <span className="flex-1 text-base">{answer.answerText}</span>
               {showCorrect && (
                 <span className="text-green-600 dark:text-green-400 text-sm font-medium">
-                  ✓ {t('correct')}
+                  <Check className="w-4 h-4 inline" /> {t('correct')}
                 </span>
               )}
               {showIncorrect && (
                 <span className="text-red-600 dark:text-red-400 text-sm font-medium">
-                  ✗ {t('incorrect')}
+                 <X className="w-4 h-4 inline" /> {t('incorrect')}
                 </span>
               )}
             </label>
@@ -99,7 +100,7 @@ export function QuizQuestion({
           )}
         >
           <div className="flex items-start gap-3">
-            <div className="text-2xl">💡</div>
+            <Lightbulb className="w-6 h-6 text-amber-500 flex-shrink-0" />
             <div className="flex-1">
               <h4 className="font-semibold text-gray-900 dark:text-gray-100 mb-1">
                 {t('recommendation.title')}

frontend/components/quiz/QuizResult.tsx

@@ -3,6 +3,7 @@
 import { useLocale, useTranslations } from 'next-intl';
 import { cn } from '@/lib/utils';
 import { Button } from '@/components/ui/button';
+import { Clock, BookOpen, TrendingUp, Trophy, AlertTriangle } from 'lucide-react';
 
 interface QuizResultProps {
   score: number;
@@ -35,49 +36,48 @@ export function QuizResult({
   const t = useTranslations('quiz.result');
   const getMotivationalMessage = () => {
     if (isIncomplete && answeredCount > 0) {
-    return {
-      emoji: '⏱️',
-      title: 'Час вийшов',
-      message: `Ви відповіли на ${answeredCount} з ${total} питань. Результат не зараховано.`,
-      color: 'text-orange-600 dark:text-orange-400',
-    };
-  }
-
+      return {
+        icon: <Clock className="w-14 h-14 text-orange-500" />,
+        title: t('incomplete.title'),
+        message: t('incomplete.message', { answeredCount, total }),
+        color: 'text-orange-600 dark:text-orange-400',
+      };
+    }
     if (score === 0 && answeredCount === 0) {
-    return {
-      emoji: '⏱️',
-      title: t('timeUp.title'),
-      message: t('timeUp.message'),
-      color: 'text-gray-600 dark:text-gray-400',
-    };
-  }
+      return {
+        icon: <Clock className="w-14 h-14 text-gray-500" />,
+        title: t('timeUp.title'),
+        message: t('timeUp.message'),
+        color: 'text-gray-600 dark:text-gray-400',
+      };
+    }
 
-  if (score === 0 && answeredCount > 0) {
-    return {
-      emoji: '📚',
-      title: t('allWrong.title'),
-      message: t('allWrong.message'),
-      color: 'text-red-600 dark:text-red-400',
-    };
-  }
+    if (score === 0 && answeredCount > 0) {
+      return {
+        icon: <BookOpen className="w-14 h-14 text-red-500" />,
+        title: t('allWrong.title'),
+        message: t('allWrong.message'),
+        color: 'text-red-600 dark:text-red-400',
+      };
+    }
 
     if (percentage < 50) {
       return {
-        emoji: '📚',
+        icon: <BookOpen className="w-14 h-14 text-red-500" />,
         title: t('needPractice.title'),
         message: t('needPractice.message'),
         color: 'text-red-600 dark:text-red-400',
       };
     } else if (percentage < 80) {
       return {
-        emoji: '💪',
+        icon: <TrendingUp className="w-14 h-14 text-orange-500" />,
         title: t('goodJob.title'),
         message: t('goodJob.message'),
         color: 'text-orange-600 dark:text-orange-400',
       };
     } else {
       return {
-        emoji: '🎉',
+        icon: <Trophy className="w-14 h-14 text-amber-500" />,
         title: t('excellent.title'),
         message: t('excellent.message'),
         color: 'text-green-600 dark:text-green-400',
@@ -89,7 +89,7 @@ export function QuizResult({
 
   return (
     <div className="max-w-2xl mx-auto space-y-8">
-      <div className="text-center text-6xl">{motivation.emoji}</div>
+      <div className="flex justify-center">{motivation.icon}</div>
       {!isIncomplete && (
         <>
           <div className="text-center space-y-2">
@@ -124,7 +124,7 @@ export function QuizResult({
 {violationsCount >= 3 && (
         <div className="p-4 rounded-xl bg-orange-50 dark:bg-orange-900/20 border border-orange-200 dark:border-orange-800">
           <p className="text-center text-orange-800 dark:text-orange-200 font-medium">
-            <span aria-hidden="true">⚠️</span> {t('violations', { count: violationsCount })}
+            <AlertTriangle className="w-4 h-4 inline" /> {t('violations', { count: violationsCount })}
           </p>
         </div>
       )}

frontend/messages/en.json

@@ -130,6 +130,10 @@
         "title": "Excellent Work!",
         "message": "You have mastered the material well"
       },
+      "incomplete": {
+        "title": "Time's up",
+        "message": "You answered {answeredCount} out of {total} questions. Result not counted."
+      },
       "violations": "Quiz completed with rule violations ({count} violations). Result not counted towards leaderboard.",
       "pointsAwarded": "+{points} points added to rating",
       "noPointsAwarded": "No points awarded (result not improved)",

frontend/messages/pl.json

@@ -130,6 +130,10 @@
         "title": "Doskonała Praca!",
         "message": "Dobrze opanowałeś materiał"
       },
+      "incomplete": {
+        "title": "Czas minął",
+        "message": "Odpowiedzi udzielono na {answeredCount} z {total} pytań. Wynik nie został zaliczony."
+      },
       "violations": "Quiz ukończony z naruszeniami zasad ({count} naruszeń). Wynik nie zaliczony do rankingu.",
       "pointsAwarded": "+{points} punktów dodanych do oceny",
       "noPointsAwarded": "Nie przyznano punktów (wynik nie poprawiony)",

frontend/messages/uk.json

@@ -130,6 +130,10 @@
         "title": "Чудова робота!",
         "message": "Ви добре засвоїли матеріал"
       },
+      "incomplete": {
+        "title": "Час вийшов",
+        "message": "Ви відповіли на {answeredCount} з {total} питань. Результат не зараховано."
+      },
       "violations": "Квіз завершено з порушеннями правил ({count} порушень). Результат не зараховано до рейтингу.",
       "pointsAwarded": "+{points} балів додано до рейтингу",
       "noPointsAwarded": "Бали не нараховано (результат не покращено)",