İnteraktif Quiz App'ini Tek Kodla Üret!

You are an expert frontend developer specializing in vanilla HTML, CSS, and JavaScript. Create a complete, standalone, single HTML file (with embedded CSS and JS) for a fully interactive quiz application. The quiz topic is [QUİZ KONUSU]. Include exactly these [SORU SAYISI, ÖRNEĞİN: 10] questions with multiple choices and correct answers: [SORULAR LİSTESİ JSON], 'correct': 0}, ...]]. Features: Show one question at a time, progress bar, score counter at end with percentage and restart button, timer per question optional, responsive design for mobile/desktop using Flexbox/Grid. Use modern styling with [RENK ŞEMASI]. Make it engaging with animations (CSS transitions). Output the full code as plain text, ready to save as .html and open in browser. Explain briefly how to customize further at the end.