:root{--bg-primary:#101828;--bg-secondary:#1d2939;--bg-card:#283547;--text-primary:#f0f4ff;--text-secondary:#a0acc0;--accent:#7c5cfc;--accent-hover:#6b4be6;--correct:#22c55e;--incorrect:#ef4444;--border:#3d4a5c;--font-main:"Segoe UI", system-ui, -apple-system, sans-serif;--radius:12px;--radius-sm:8px}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;margin:0;padding:0}html,body,#root{width:100%;height:100%;overflow:hidden}body{font-family:var(--font-main);background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;touch-action:manipulation;-webkit-user-select:none;user-select:none}.app{flex-direction:column;gap:16px;max-width:480px;height:100%;margin:0 auto;padding:16px;display:flex}.header{justify-content:space-between;align-items:center;padding:8px 0;display:flex}.header h1{letter-spacing:-.02em;color:var(--text-primary);font-size:1.25rem;font-weight:700}.header .subtitle{color:var(--text-secondary);font-size:.75rem;font-weight:500}.progress-bar{gap:6px;padding:4px 0;display:flex}.progress-dot{background:var(--border);border-radius:4px;flex:1;width:0;height:4px;transition:background .2s}.progress-dot.active{background:var(--accent)}.progress-dot.correct{background:var(--correct)}.progress-dot.incorrect{background:var(--incorrect)}.progress-label{color:var(--text-secondary);text-align:center;margin-top:4px;font-size:.75rem}.start-screen{text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:24px;padding:20px;display:flex}.start-screen .logo{background:var(--accent);color:#fff;border-radius:20px;justify-content:center;align-items:center;width:72px;height:72px;font-size:2rem;display:flex}.start-screen h2{letter-spacing:-.03em;font-size:1.75rem;font-weight:800}.start-screen p{color:var(--text-secondary);max-width:300px;font-size:.95rem;line-height:1.5}.question-area{-webkit-overflow-scrolling:touch;flex-direction:column;flex:1;gap:12px;display:flex;overflow-y:auto}.game-label{text-transform:uppercase;letter-spacing:.08em;color:var(--accent);font-size:.7rem;font-weight:600}.prompt-card{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);text-align:center;justify-content:center;align-items:center;min-height:100px;padding:24px 20px;font-size:1.25rem;font-weight:600;line-height:1.5;display:flex}.answer-grid{grid-template-columns:1fr 1fr;gap:10px;margin-top:auto;padding:0;display:grid}.answer-btn{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);color:var(--text-primary);cursor:pointer;touch-action:manipulation;-webkit-touch-callout:none;min-height:60px;padding:18px 12px;font-size:1.1rem;font-weight:600;transition:all .15s}.answer-btn:active{background:var(--border);transform:scale(.97)}.answer-btn.selected-correct{background:var(--correct);border-color:var(--correct);color:#fff}.answer-btn.selected-incorrect{background:var(--incorrect);border-color:var(--incorrect);color:#fff}.answer-btn.reveal-correct{border-color:var(--correct)}.answer-btn:disabled{cursor:default;opacity:.85}.answer-btn.answer-label{flex-direction:column;align-items:center;gap:4px;display:flex}.answer-label .label{color:var(--text-secondary);text-transform:uppercase;font-size:.7rem;font-weight:400}.answer-btn.selected-correct .label,.answer-btn.selected-incorrect .label{color:#ffffffb3}.feedback-area{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-sm);flex-direction:column;gap:6px;min-height:60px;padding:14px 16px;animation:.2s fadeIn;display:flex}@keyframes fadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.feedback-area .feedback-status{font-size:.95rem;font-weight:700}.feedback-area .feedback-status.correct{color:var(--correct)}.feedback-area .feedback-status.incorrect{color:var(--incorrect)}.feedback-area .feedback-explain{color:var(--text-secondary);font-size:.85rem;line-height:1.4}.continue-btn{background:var(--accent);color:#fff;border-radius:var(--radius);cursor:pointer;touch-action:manipulation;border:none;margin-top:8px;padding:14px 24px;font-size:1rem;font-weight:600;transition:background .15s}.continue-btn:active{background:var(--accent-hover)}.end-screen{text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:20px;padding:20px;display:flex}.end-screen .end-icon{font-size:3rem}.end-screen h2{font-size:1.5rem;font-weight:800}.results-grid{flex-direction:column;gap:12px;width:100%;margin:8px 0;display:flex}.result-row{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);justify-content:space-between;align-items:center;padding:14px 16px;display:flex}.result-row .game-name{font-size:.95rem;font-weight:600}.result-row .game-score{color:var(--text-secondary);font-size:.9rem}.result-row .game-accuracy{font-size:1rem;font-weight:700}.accuracy-good{color:var(--correct)}.accuracy-ok{color:#eab308}.accuracy-low{color:var(--incorrect)}.total-score{font-size:1.1rem;font-weight:700}.primary-btn{background:var(--accent);color:#fff;border-radius:var(--radius);cursor:pointer;touch-action:manipulation;border:none;width:100%;padding:16px 32px;font-size:1.1rem;font-weight:700;transition:background .15s}.primary-btn:active{background:var(--accent-hover)}.secondary-btn{color:var(--text-secondary);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;touch-action:manipulation;background:0 0;width:100%;padding:12px 24px;font-size:.95rem;font-weight:500;transition:all .15s}.secondary-btn:active{background:var(--bg-secondary)}.button-group{flex-direction:column;gap:10px;width:100%;display:flex}