.game-board-container{display:flex;flex-direction:column;align-items:center;gap:2rem}.attempt-counter{font-size:1.2rem;font-weight:600;color:#4b5563;margin-top:1rem;text-align:center}.attempt-number{color:#667eea;font-size:1.4rem;font-weight:700}.start-button{padding:1rem 2rem;font-size:1.2rem;font-weight:700;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:8px;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 15px #667eea66}.start-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #667eea99}.start-button:active:not(:disabled){transform:translateY(0)}.start-button:disabled{opacity:.7;cursor:not-allowed}.game-board{display:grid;gap:1rem;max-width:500px;width:100%}.game-board.animating{pointer-events:none}.cell{aspect-ratio:1;background:linear-gradient(135deg,#f5f7fa,#c3cfe2);border:3px solid #667eea;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:3rem;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 10px #0000001a;position:relative;overflow:hidden}.cell:hover:not(:disabled){transform:scale(1.05);box-shadow:0 6px 15px #667eea4d;background:linear-gradient(135deg,#e0e7ff,#c7d2fe)}.cell.animated{animation:pulse .3s ease-in-out;background:linear-gradient(135deg,#fef3c7,#fde68a)}.cell.selected{background:linear-gradient(135deg,#fee2e2,#fecaca);border-color:#ef4444}.cell.revealed-success{background:linear-gradient(135deg,#d1fae5,#a7f3d0);border-color:#10b981;animation:reveal .5s ease-in-out}.cell.revealed-failure{background:linear-gradient(135deg,#fee2e2,#fecaca);border-color:#ef4444;animation:reveal .5s ease-in-out}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.1)}}@keyframes reveal{0%{transform:scale(1)}50%{transform:scale(1.2)}to{transform:scale(1)}}.floating-duck{position:absolute;left:25%;top:50%;transform:translate(-50%,-50%);display:inline-block;animation:swimRight 3s ease-in-out infinite}@keyframes swimRight{0%{transform:translate(0) translateY(-50%) translateY(0)}25%{transform:translate(calc(25% - .5rem)) translateY(-50%) translateY(-8px)}50%{transform:translate(calc(70% - .5rem)) translateY(-50%) translateY(-5px)}75%{transform:translate(calc(25% - .5rem)) translateY(-50%) translateY(-8px)}to{transform:translate(0) translateY(-50%) translateY(0)}}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .3s ease}.modal{background:#fff;padding:2rem 3rem;border-radius:16px;text-align:center;box-shadow:0 10px 40px #0000004d;animation:slideUp .3s ease;max-width:400px;width:90%}.modal.success{border-top:5px solid #10b981}.modal.failure{border-top:5px solid #ef4444}.modal h2{margin:0 0 1rem;font-size:2rem;color:#1f2937}.modal p{margin:0 0 1.5rem;font-size:1.1rem;color:#4b5563}.modal button{padding:.75rem 2rem;font-size:1rem;font-weight:700;background:#667eea;color:#fff;border:none;border-radius:8px;cursor:pointer;transition:all .3s ease}.modal button:hover{background:#5568d3;transform:translateY(-2px)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.app{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);padding:2rem}.container{text-align:center;background:#fff;padding:3rem;border-radius:20px;box-shadow:0 20px 60px #0000004d;max-width:800px;width:100%}.level-selector{display:flex;gap:.75rem;justify-content:center;flex-wrap:wrap;margin-bottom:2rem}.level-button{padding:.75rem 1.5rem;font-size:1rem;font-weight:600;background:#f3f4f6;color:#4b5563;border:2px solid #e5e7eb;border-radius:8px;cursor:pointer;transition:all .3s ease}.level-button:hover{background:#e5e7eb;transform:translateY(-2px);box-shadow:0 4px 8px #0000001a}.level-button.active{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-color:#667eea;box-shadow:0 4px 12px #667eea66}h1{margin:0 0 2rem;font-size:2.5rem;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-weight:700}@media (max-width: 600px){.container{padding:2rem 1.5rem}h1{font-size:2rem}.game-board{gap:.75rem}.cell{font-size:2rem}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}