@import"https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800;900&display=swap";:root{--bg-color: #ffffff;--text-dark: #3c3c3c;--text-secondary: #777777;--primary: #58cc02;--primary-hover: #46a302;--primary-shadow: #58a700;--secondary: #1cb0f6;--secondary-hover: #1899d6;--secondary-shadow: #1899d6;--danger: #ff4b4b;--danger-shadow: #ea2b2b;--warning: #ffc800;--warning-shadow: #e5b400;--card-bg: #ffffff;--card-border: #e5e5e5;--card-shadow: 0 4px 0 #e5e5e5;--surface-hover: #f7f7f7}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Nunito,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--text-dark);background-color:var(--bg-color);-webkit-font-smoothing:antialiased;min-height:100vh;display:flex;flex-direction:column}#root{flex:1;display:flex;flex-direction:column}.app-container{max-width:600px;margin:0 auto;padding:2rem 1.5rem;width:100%;flex:1;display:flex;flex-direction:column}.title{font-size:2rem;font-weight:800;text-align:center;margin-bottom:.5rem;color:var(--text-dark)}.subtitle{font-size:1.1rem;font-weight:600;text-align:center;color:var(--text-secondary);margin-bottom:2rem}.glass-card{background:var(--card-bg);border:2px solid var(--card-border);border-radius:16px;padding:2rem;box-shadow:var(--card-shadow);margin-bottom:1.5rem}button{font-family:Nunito,sans-serif;cursor:pointer;border:none;outline:none;transition:all .1s ease}button:disabled{opacity:.5;cursor:not-allowed;transform:none!important;box-shadow:none!important;margin-top:4px}.btn-3d{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;width:100%;padding:1rem 1.5rem;font-size:1.2rem;font-weight:800;border-radius:16px;text-transform:uppercase;letter-spacing:.5px;position:relative}.btn-3d:active:not(:disabled){transform:translateY(4px)}.btn-primary{background-color:var(--primary);color:#fff;border:2px solid transparent;box-shadow:0 4px 0 var(--primary-shadow)}.btn-primary:active:not(:disabled){box-shadow:0 0 0 var(--primary-shadow)}.btn-primary:hover:not(:disabled){background-color:var(--primary-hover)}.btn-secondary{background-color:var(--secondary);color:#fff;border:2px solid transparent;box-shadow:0 4px 0 var(--secondary-shadow)}.btn-secondary:active:not(:disabled){box-shadow:0 0 0 var(--secondary-shadow)}.btn-secondary:hover:not(:disabled){background-color:var(--secondary-hover)}.btn-outline{background-color:var(--card-bg);color:var(--text-dark);border:2px solid var(--card-border);box-shadow:0 4px 0 var(--card-border)}.btn-outline:hover:not(:disabled){background-color:var(--surface-hover)}.btn-outline:active:not(:disabled){box-shadow:0 0 0 var(--card-border)}.btn-outline.selected{border-color:var(--secondary);background-color:#ddf4ff;color:var(--secondary)}.btn-outline.correct{border-color:var(--primary);background-color:#d7ffb8;color:var(--primary)}.btn-outline.wrong{border-color:var(--danger);background-color:#ffdfe0;color:var(--danger)}.btn-nav{padding:.8rem 1.2rem;font-size:1rem}textarea{width:100%;background:var(--surface-hover);border:2px solid var(--card-border);border-radius:12px;padding:1rem;font-family:Nunito,sans-serif;font-size:1.1rem;font-weight:600;color:var(--text-dark);resize:vertical;margin-bottom:1.5rem;outline:none;transition:border-color .2s}textarea:focus{border-color:var(--secondary);background:#fff}textarea::placeholder{color:#b0b0b0;font-weight:600}.quiz-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-top:2rem}.tone-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:1.5rem 1rem;font-size:2rem;font-weight:800}.hint-box{margin-top:1.5rem;padding:1.5rem;background:#fff8d6;border:2px solid #ffc800;border-radius:16px;color:#8c6d00}.hint-box strong{color:#b38b00}.selection-grid{display:flex;flex-direction:column;gap:1rem;margin-top:1rem}.fade-in{animation:fadeIn .4s ease forwards}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.progress-container{width:100%;height:16px;background:var(--card-border);border-radius:8px;overflow:hidden;margin-bottom:1.5rem}.progress-bar{height:100%;background:var(--primary);border-radius:8px;transition:width .3s ease;position:relative}.game-instruction{font-size:1.4rem;font-weight:800;text-align:center;margin-bottom:2rem;color:var(--text-dark)}.sentence-container{padding:3rem 2rem;text-align:center}.sentence-text{font-size:1.8rem;font-weight:700;line-height:1.6;margin-bottom:1.5rem}.blank-space{display:inline-block;min-width:100px;border-bottom:4px dashed var(--card-border);margin:0 .5rem;color:var(--secondary);transition:all .3s;padding:0 10px}.blank-space.correct{color:var(--primary);border-bottom-color:var(--primary);border-bottom-style:solid}.blank-space.wrong{color:var(--danger);border-bottom-color:var(--danger);border-bottom-style:solid}.sentence-translation{font-size:1.2rem;font-weight:600;color:var(--text-secondary);font-style:italic}.word-tray{display:flex;flex-wrap:wrap;justify-content:center;gap:1rem;margin-top:3rem}.drag-word{cursor:grab;-webkit-user-select:none;user-select:none}.drag-word:active{cursor:grabbing}.drag-word.dragging{opacity:.3}.feedback-overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;display:flex;align-items:center;justify-content:center;z-index:1000;pointer-events:none}.feedback-toast{width:90%;max-width:400px;display:flex;flex-direction:column;align-items:center;gap:1.5rem;padding:3rem 2rem;border-radius:32px;font-weight:900;font-size:1.8rem;text-align:center;box-shadow:0 20px 50px #0000004d;animation:popCenter .4s cubic-bezier(.18,.89,.32,1.28) forwards;border:4px solid white}@keyframes popCenter{0%{transform:scale(.5);opacity:0}to{transform:scale(1);opacity:1}}.feedback-toast.correct{background-color:var(--primary);color:#fff}.feedback-toast.wrong{background-color:var(--danger);color:#fff}.feedback-toast .icon-circle{background:#ffffff40;padding:.6rem;border-radius:50%;display:flex;align-items:center;justify-content:center}.progress-bar:after{content:"";position:absolute;top:4px;left:4px;right:4px;height:4px;background:#ffffff4d;border-radius:2px}