(SP: 7) [UI] Quiz UI polish: tabs styling, category accents, color scheme (#181, #193, #194)

.gitignore

@@ -64,7 +64,7 @@ next-env.d.ts
 # Documentation (development only)
 .claude/
 CLAUDE.md
-frontend/docs/
+frontend/_dev-notes/
 frontend/.env.bak
 
 

frontend/.gitignore

@@ -45,9 +45,5 @@ next-env.d.ts
 
 # Documentation (only for development)
 CLAUDE.md
-docs/
+_dev-notes/
 .claude
-
-!docs/
-!docs/security/
-!docs/security/origin-posture.md

frontend/app/[locale]/quizzes/page.tsx

@@ -2,6 +2,7 @@ import { getActiveQuizzes, getUserQuizzesProgress } from '@/db/queries/quiz';
 import { getCurrentUser } from '@/lib/auth';
 import { getTranslations } from 'next-intl/server';
 import QuizzesSection from '@/components/quiz/QuizzesSection';
+import { DynamicGridBackground } from '@/components/shared/DynamicGridBackground';
 
 type PageProps = { params: Promise<{ locale: string }> };
 
@@ -23,7 +24,7 @@ export default async function QuizzesPage({ params }: PageProps) {
 
   if (!quizzes.length) {
     return (
-      <div className="mx-auto max-w-5xl py-12">
+      <div className="mx-auto max-w-7xl py-12 px-4 sm:px-6 lg:px-8">
         <h1 className="text-3xl font-bold mb-4">{t('title')}</h1>
         <p className="text-gray-600 dark:text-gray-400">
           {t('noQuizzes')}
@@ -33,9 +34,10 @@ export default async function QuizzesPage({ params }: PageProps) {
   }
 
   return (
-    <div className="mx-auto max-w-5xl py-12">
+    <DynamicGridBackground className="min-h-screen bg-gray-50 transition-colors duration-300 dark:bg-transparent py-10">
+  <main className="relative z-10 mx-auto max-w-7xl px-4 sm:px-6 lg:px-8">
       <div className="mb-8">
-        <p className="text-sm text-blue-600 dark:text-blue-400 font-semibold">
+        <p className="text-sm text-[var(--accent-primary)] font-semibold">
           {t('practice')}
         </p>
         <h1 className="text-3xl font-bold">{t('title')}</h1>
@@ -45,6 +47,7 @@ export default async function QuizzesPage({ params }: PageProps) {
       </div>
 
       <QuizzesSection quizzes={quizzes} userProgressMap={userProgressMap} />
-    </div>
+    </main>
+</DynamicGridBackground>
   );
 }

frontend/components/q&a/AccordionList.tsx

@@ -7,7 +7,7 @@ import {
   AccordionTrigger,
   AccordionContent,
 } from '@/components/ui/accordion';
-import { qaTabStyles } from '@/data/qaTabs';
+import { categoryTabStyles } from '@/data/categoryStyles';
 
 import CodeBlock from '@/components/q&a/CodeBlock';
 import type {
@@ -241,7 +241,7 @@ export default function AccordionList({ items }: { items: QuestionEntry[] }) {
       {items.map((q, idx) => {
         const key = q.id ?? idx;
         const accent =
-          qaTabStyles[q.category as keyof typeof qaTabStyles]?.accent;
+          categoryTabStyles[q.category as keyof typeof categoryTabStyles]?.accent;
         return (
           <AccordionItem
             key={key}

frontend/components/q&a/QaSection.tsx

@@ -6,8 +6,8 @@ import { Pagination } from '@/components/q&a/Pagination';
 import { Tabs, TabsList, TabsContent } from '@/components/ui/tabs';
 import { categoryData } from '@/data/category';
 import { useQaTabs } from '@/components/q&a/useQaTabs';
-import { QaTabButton } from '@/components/q&a/QaTabButton';
-import { qaTabStyles } from '@/data/qaTabs';
+import { CategoryTabButton } from '@/components/shared/CategoryTabButton';
+import { categoryTabStyles } from '@/data/categoryStyles';
 import { cn } from '@/lib/utils';
 import type { CategorySlug } from '@/components/q&a/types';
 
@@ -29,18 +29,18 @@ export default function TabsSection() {
       <Tabs value={active} onValueChange={handleCategoryChange}>
         <TabsList className="!bg-transparent !p-0 !h-auto !w-full flex flex-wrap items-stretch justify-start gap-3 mb-6">
           {categoryData.map(category => {
-            const slug = category.slug as keyof typeof qaTabStyles;
+            const slug = category.slug as keyof typeof categoryTabStyles;
             const value = slug as CategorySlug;
             return (
-            <QaTabButton
+            <CategoryTabButton
               key={slug}
               value={value}
               label={
                 category.translations[localeKey] ??
                 category.translations.en ??
                 value
               }
-              style={qaTabStyles[slug]}
+              style={categoryTabStyles[slug]}
               isActive={active === value}
             />
             );
@@ -78,7 +78,7 @@ export default function TabsSection() {
           currentPage={currentPage}
           totalPages={totalPages}
           onPageChange={handlePageChange}
-          accentColor={qaTabStyles[active as keyof typeof qaTabStyles].accent}
+          accentColor={categoryTabStyles[active as keyof typeof categoryTabStyles].accent}
         />
       )}
     </div>

frontend/components/quiz/CountdownTimer.tsx

@@ -68,13 +68,13 @@ export function CountdownTimer({
     if (percentage <= 30) {
       return 'text-yellow-600 dark:text-yellow-400 bg-yellow-50 dark:bg-yellow-950/30 border-yellow-200 dark:border-yellow-800';
     }
-    return 'text-blue-600 dark:text-blue-400 bg-blue-50 dark:bg-blue-950/30 border-blue-200 dark:border-blue-800';
+return 'text-green-600 dark:text-green-400 bg-green-50 dark:bg-green-950/30 border-green-200 dark:border-green-800';
   };
 
   const getProgressBarColor = () => {
     if (percentage <= 10) return 'bg-red-600';
     if (percentage <= 30) return 'bg-yellow-600';
-    return 'bg-blue-600';
+    return 'bg-green-600';
   };
 
   if (!isActive) return null;

frontend/components/quiz/QuizCard.tsx

@@ -4,6 +4,7 @@ import { useTranslations } from 'next-intl';
 import { Link } from '@/i18n/routing';
 import { Badge } from '@/components/ui/badge';
 import { FileText, Clock } from 'lucide-react';
+import { categoryTabStyles } from '@/data/categoryStyles';
 
 interface QuizCardProps {
   quiz: {
@@ -14,6 +15,7 @@ interface QuizCardProps {
     questionsCount: number;
     timeLimitSeconds: number | null;
     categoryName: string | null;
+    categorySlug: string | null;
   };
   userProgress?: {
     bestScore: number;
@@ -24,16 +26,33 @@ interface QuizCardProps {
 
 export function QuizCard({ quiz, userProgress }: QuizCardProps) {
   const t = useTranslations('quiz.card');
+  const slug = quiz.categorySlug as keyof typeof categoryTabStyles | null;
+  const style = slug && categoryTabStyles[slug] ? categoryTabStyles[slug] : null;
+  const accentColor = style?.accent ?? '#3B82F6'; // fallback blue
+
   const percentage =
     userProgress && userProgress.totalQuestions > 0
       ? Math.round((userProgress.bestScore / userProgress.totalQuestions) * 100)
       : 0;
 
   return (
-    <div className="flex flex-col rounded-xl border border-gray-200 dark:border-neutral-800 bg-white dark:bg-neutral-900 p-5 shadow-sm hover:shadow-md transition-shadow">
+    <div 
+      className="group/card relative flex flex-col rounded-xl border border-black/10 dark:border-white/10 hover:!border-[var(--accent)] bg-white dark:bg-neutral-900 p-5 shadow-sm overflow-hidden transition-all duration-300 hover:-translate-y-1 hover:shadow-xl"
+      style={{ '--accent': `${accentColor}60` } as React.CSSProperties}
+    >
+      <span
+        className="pointer-events-none absolute -top-6 -right-6 w-24 h-24 rounded-full blur-[40px] opacity-0 group-hover/card:opacity-20 transition-opacity duration-500"
+        style={{ backgroundColor: accentColor }}
+      />
       <div className="flex-grow">
         <div className="flex gap-2 mb-3">
-          <Badge variant="blue">
+          <Badge
+            variant="default"
+            style={{
+              backgroundColor: `${accentColor}20`,
+              color: accentColor,
+            }}
+          >
             {quiz.categoryName ?? t('uncategorized')}
           </Badge>
           {userProgress && <Badge variant="success">{t('completed')}</Badge>}
@@ -48,11 +67,11 @@ export function QuizCard({ quiz, userProgress }: QuizCardProps) {
         )}
         <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" />
+           <FileText className="w-3.5 h-3.5" style={{ color: accentColor }} />
             {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" />
+            <Clock className="w-3.5 h-3.5" style={{ color: accentColor }} />
             {Math.floor(
               (quiz.timeLimitSeconds ?? quiz.questionsCount * 30) / 60
             )}{' '}
@@ -76,17 +95,26 @@ export function QuizCard({ quiz, userProgress }: QuizCardProps) {
           </div>
           <div className="h-1.5 bg-gray-200 dark:bg-neutral-800 rounded-full overflow-hidden">
             <div
-              className="h-full bg-blue-600 rounded-full transition-all"
-              style={{ width: `${percentage}%` }}
+              className="h-full rounded-full transition-all"
+              style={{ width: `${percentage}%`, backgroundColor: accentColor }}
             />
           </div>
         </div>
       )}
       <Link
         href={`/quiz/${quiz.slug}`}
-        className="btn block w-full text-center rounded-lg text-white px-4 py-2.5 text-sm font-medium transition-colors"
+        className="group relative block w-full overflow-hidden text-center rounded-xl border px-4 py-2.5 text-sm font-semibold transition-all duration-300"
+        style={{
+          borderColor: `${accentColor}50`,
+          backgroundColor: `${accentColor}15`,
+          color: accentColor,
+        }}
       >
         {userProgress ? t('retake') : t('start')}
+        <span
+          className="pointer-events-none absolute left-1/2 top-1/2 h-[150%] w-[80%] -translate-x-1/2 -translate-y-1/2 rounded-full blur-[20px] opacity-0 transition-opacity duration-300 group-hover:opacity-30"
+          style={{ backgroundColor: accentColor }}
+        />
       </Link>
     </div>
   );

frontend/components/quiz/QuizContainer.tsx

@@ -18,6 +18,7 @@ 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';
+import { categoryTabStyles } from '@/data/categoryStyles';
 
 interface Answer {
   questionId: string;
@@ -149,6 +150,8 @@ export function QuizContainer({
   const tRules = useTranslations('quiz.rules');
   const tExit = useTranslations('quiz.exitModal');
   const tQuestion = useTranslations('quiz.question');
+  const categoryStyle = categorySlug ? categoryTabStyles[categorySlug as keyof typeof categoryTabStyles] : null;
+  const accentColor = categoryStyle?.accent ?? '#3B82F6';
   const [isPending, startTransition] = useTransition();
   const [state, dispatch] = useReducer(quizReducer, {
     status: 'rules',
@@ -195,7 +198,6 @@ const { markQuitting } = useQuizGuards({
   resetViolations,
 });
 
-
   // Sync seed to URL for language switch persistence
   useEffect(() => {
     if (!searchParams.has('seed')) {
@@ -369,7 +371,7 @@ const confirmQuit = () => {
     if (onBackToTopics) {
       onBackToTopics();
     } else {
-      window.location.href = `/${locale}/`;
+      window.location.href = `/${locale}/q&a`;
     }
   };
 
@@ -423,10 +425,21 @@ const confirmQuit = () => {
             </div>
           </div>
         </div>
-
-        <Button onClick={handleStart} className="w-full" size="md">
-          {tRules('startButton')}
-        </Button>
+          <button
+            onClick={handleStart}
+            className="group relative w-full overflow-hidden text-center rounded-xl border px-6 py-3 text-base font-semibold transition-all duration-300"
+            style={{
+              borderColor: `${accentColor}50`,
+              backgroundColor: `${accentColor}15`,
+              color: accentColor,
+            }}
+          >
+            {tRules('startButton')}
+            <span
+              className="pointer-events-none absolute left-1/2 top-1/2 h-[150%] w-[80%] -translate-x-1/2 -translate-y-1/2 rounded-full blur-[20px] opacity-0 transition-opacity duration-300 group-hover:opacity-30"
+              style={{ backgroundColor: accentColor }}
+            />
+          </button>
       </div>
     );
   }
@@ -493,6 +506,7 @@ const confirmQuit = () => {
         onAnswer={handleAnswer}
         onNext={handleNext}
         isLoading={isPending}
+        accentColor={accentColor}
       />
       <ConfirmModal
         isOpen={showExitModal}

frontend/components/quiz/QuizProgress.tsx

@@ -82,11 +82,11 @@ export function QuizProgress({ current, total, answers }: QuizProgressProps) {
             <div
               key={index}
               className={cn(
-                'relative flex items-center justify-center w-9 h-9 rounded-full transition-all border-2 text-sm font-medium',
-                isCurrent && !isAnswered && 'border-blue-500 bg-blue-50 dark:bg-blue-950',
-                isAnswered && isCorrect && 'border-green-500 bg-green-500',
-                isAnswered && !isCorrect && 'border-red-500 bg-red-500',
-                !isAnswered && !isCurrent && 'border-gray-300 dark:border-gray-600 bg-white dark:bg-gray-900'
+                'relative flex items-center justify-center w-9 h-9 rounded-full transition-all border text-sm font-medium',
+                isCurrent && !isAnswered && 'border-blue-500 bg-blue-500/20 dark:bg-blue-500/20',
+                isAnswered && isCorrect && 'border-green-500 bg-green-500/20 dark:bg-green-500/20',
+                isAnswered && !isCorrect && 'border-red-500 bg-red-500/20 dark:bg-red-500/20',
+                !isAnswered && !isCurrent && 'border-gray-300 dark:border-gray-600 bg-white/90 dark:bg-neutral-900/80'
               )}
             >
               {isAnswered ? (
@@ -103,7 +103,14 @@ export function QuizProgress({ current, total, answers }: QuizProgressProps) {
                 </span>
               )}
               {isCurrent && (
-                <div className="absolute inset-0 rounded-full border-2 border-blue-500 animate-pulse" />
+                <div 
+                  className={cn(
+                    "absolute inset-0 rounded-full border-1 animate-pulse",
+                    !isAnswered && "border-blue-500",
+                    isAnswered && isCorrect && "border-green-500",
+                    isAnswered && !isCorrect && "border-red-500"
+                  )} 
+                />
               )}
             </div>
           );