@import"https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;700&display=swap";:root{--primary: #6366f1;--primary-hover: #4f46e5;--bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);--glass: rgba(255, 255, 255, .05);--glass-border: rgba(255, 255, 255, .1);--text-primary: #f8fafc;--text-secondary: #94a3b8;--success: #10b981;--error: #ef4444}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Outfit,sans-serif;background:var(--bg-gradient);color:var(--text-primary);min-height:100vh;-webkit-font-smoothing:antialiased}.app-container{max-width:500px;margin:0 auto;padding:1.5rem;display:flex;flex-direction:column;min-height:100vh}.glass-card{background:var(--glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:24px;padding:1.5rem;box-shadow:0 8px 32px #0000005e}.title{font-size:2rem;font-weight:700;text-align:center;margin-bottom:.5rem;background:linear-gradient(to right,#818cf8,#c084fc);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.subtitle{color:var(--text-secondary);text-align:center;font-size:.9rem;margin-bottom:2rem}button{cursor:pointer;transition:all .2s ease;border-radius:12px;border:none;font-family:inherit}.btn-primary{background:var(--primary);color:#fff;padding:.8rem 1.5rem;font-weight:600;width:100%}.btn-primary:active{transform:scale(.98)}textarea{width:100%;background:#0003;border:1px solid var(--glass-border);border-radius:16px;color:#fff;padding:1rem;font-family:inherit;font-size:1rem;resize:none;margin-bottom:1rem}textarea:focus{outline:none;border-color:var(--primary)}.quiz-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;margin-top:2rem}.tone-btn{background:var(--glass);border:1px solid var(--glass-border);color:#fff;padding:2rem 1rem;font-size:1.5rem;font-weight:600;display:flex;flex-direction:column;align-items:center}.tone-btn:hover{background:#ffffff1a}.correct{background:var(--success)!important;border-color:var(--success)}.wrong{background:var(--error)!important;border-color:var(--error)}.hint-box{background:#fff3cd1a;border-left:4px solid #f59e0b;padding:1rem;margin-top:1.5rem;border-radius:8px;line-height:1.5}.fade-in{animation:fadeIn .3s ease-in}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}