:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;min-width:320px;min-height:100vh;overflow-x:hidden}*{box-sizing:border-box}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: 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1rem;color:#333}.word-input-display{font-size:2rem;font-weight:600;margin:1rem 0;min-height:3rem;display:flex;align-items:center;justify-content:center;font-family:monospace;cursor:text;padding:1rem;border:2px solid transparent;border-radius:12px;transition:border-color .2s;word-break:break-all;flex-wrap:wrap;max-width:100%}.word-input-display:hover{border-color:#ddd}.word-input-display:active{border-color:#007aff}.word-input{position:absolute;left:-9999px;opacity:0;pointer-events:none}.correct-text{color:#2a2}.incorrect-text{color:#c33}.cursor{color:#333;animation:blink 1s infinite}@keyframes blink{0%,50%{opacity:1}51%,to{opacity:0}}.success-feedback{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:#2a2;color:#fff;padding:1rem 2rem;border-radius:12px;font-size:1.5rem;font-weight:700;z-index:100;animation:fadeInOut .8s ease-in-out}@keyframes fadeInOut{0%{opacity:0;transform:translate(-50%,-50%) scale(.8)}30%{opacity:1;transform:translate(-50%,-50%) scale(1)}70%{opacity:1;transform:translate(-50%,-50%) scale(1)}to{opacity:0;transform:translate(-50%,-50%) scale(.8)}}.high-score-message{color:#2a2;font-weight:700;font-size:1.2rem;margin:1rem 0}.mode-toggle{display:flex;gap:.5rem;margin-bottom:2rem;align-items:center}.toggle-btn{padding:.5rem 1rem;border:2px solid #ddd;background:#fff;border-radius:8px;cursor:pointer;transition:all .2s;font-weight:600}.toggle-btn.active{background:#007aff;color:#fff;border-color:#007aff}.toggle-btn:hover:not(.active){border-color:#007aff}.progress-container{width:100%;max-width:400px;margin-bottom:2rem}.progress-bar{width:100%;height:1rem;background:#f0f0f0;border-radius:.5rem;overflow:hidden;margin-bottom:.5rem}.progress-fill{height:100%;background:#007aff;transition:width .3s ease}.progress-text{text-align:center;font-size:.9rem;color:#666;font-weight:600}.completion-message{text-align:center;margin:2rem 0}.completion-message h2{color:#2a2;margin-bottom:1rem}.completion-message p{margin-bottom:2rem;color:#666}.final-score{text-align:center;margin:2rem 0}.score-number{font-size:4rem;font-weight:700;color:#007aff;line-height:1;margin-bottom:.5rem}.score-label{font-size:1.2rem;color:#666;font-weight:600}.new-high-score{text-align:center;margin:1.5rem 0}.previous-best{color:#888;font-size:1rem;margin:.5rem 0}.high-score-display{text-align:center;margin:1.5rem 0}.best-label{color:#666;font-size:1rem;margin-bottom:.5rem}.best-score{font-size:2rem;font-weight:700;color:#007aff;margin:0}.letter-display{text-align:center;margin:2rem 0}.letter-to-produce{font-size:4rem;font-weight:700;color:#007aff;margin-bottom:1rem}.instruction{font-size:1.2rem;color:#666;margin-bottom:2rem}.braille-dot-container{display:flex;justify-content:center;margin:2rem 0}.dot-grid{display:flex;gap:1rem}.dot-column{display:flex;flex-direction:column;gap:.5rem}.braille-dot{width:3rem;height:3rem;border-radius:50%;border:3px solid #ddd;background:#fff;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center}.braille-dot.empty:hover{border-color:#007aff;background:#f8f9ff}.braille-dot.filled{background:#333;border-color:#333}.braille-dot.correct-dot{background:#2a2!important;border-color:#2a2!important}.braille-dot.extra-dot{background:#fff!important;border-color:#c33!important;border-width:4px!important}.braille-dot.missing-dot{background:#c33!important;border-color:#c33!important}.braille-dot.disabled{cursor:not-allowed;opacity:.8}.submit-button{font-size:1.2rem;padding:.8rem 2rem;background:#007aff;color:#fff;border:none;border-radius:8px;cursor:pointer;font-weight:600;transition:background-color .2s;margin-top:1rem}.submit-button:hover{background:#0056cc}.help-button{width:2.5rem;height:2.5rem;border-radius:50%;border:2px solid #ddd;background:#fff;font-size:1.2rem;font-weight:700;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center}.help-button:hover{background:#f0f0f0;border-color:#007aff}.help-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000}.help-content{background:#fff;border-radius:12px;padding:1.5rem;max-width:800px;max-height:80vh;overflow-y:auto;position:relative}.help-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.help-header h2{margin:0;color:#333}.close-button{background:none;border:none;font-size:1.5rem;cursor:pointer;color:#666;width:2rem;height:2rem;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:background-color .2s}.close-button:hover{background:#f0f0f0}.braille-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(60px,1fr));gap:.75rem;margin-bottom:1rem}.braille-item{display:flex;flex-direction:column;align-items:center;padding:.5rem;border:1px solid #eee;border-radius:6px;transition:border-color .2s}.braille-item:hover{border-color:#007aff}.braille-char{font-size:2.5rem;font-family:Braille,monospace;margin-bottom:.25rem}.letter-label{font-size:1rem;font-weight:600;color:#333}.help-footer{text-align:center;color:#666;font-size:.9rem}.help-footer kbd{background:#f0f0f0;border:1px solid #ccc;border-radius:4px;padding:.2em .4em;font-family:monospace;font-weight:700}@media (max-width: 768px){.app{padding:.5rem;min-height:100vh;justify-content:center}.mode-toggle{margin-bottom:1rem;gap:.25rem}.toggle-btn{padding:.4rem .8rem;font-size:.9rem}.game-header{gap:1rem;font-size:1.1rem;margin-bottom:1.5rem;flex-wrap:wrap;justify-content:center;width:100%}.progress-container{max-width:95%;margin-bottom:1rem}.braille-display{font-size:3.5rem;margin:1rem 0;height:auto;min-height:5rem;padding:.5rem;word-break:break-all;line-height:1.2;max-width:95%}.word-input-display{font-size:1.2rem;margin:.5rem 0;min-height:auto;padding:.5rem;line-height:1.4;max-width:95%}.help-button{width:2rem;height:2rem;font-size:1rem}.score-number{font-size:3rem}.score-label{font-size:1rem}.best-score{font-size:1.5rem}.letter-to-produce{font-size:3rem}.instruction{font-size:1rem}.dot-grid{gap:.75rem}.dot-column{gap:.4rem}.braille-dot{width:2.5rem;height:2.5rem}.submit-button{font-size:1rem;padding:.6rem 1.5rem}}