*{margin:0;padding:0;box-sizing:border-box}:root{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;line-height:1.5;font-weight:400;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;min-width:320px;min-height:100vh;background:linear-gradient(135deg,#f0f4f8,#d9e2ec);color:#2d3748}#root{width:100%;min-height:100vh}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes slideIn{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}.app{max-width:1600px;margin:0 auto;padding:1.5rem 2rem;animation:fadeIn .5s ease;min-height:100vh;max-height:100vh;display:flex;flex-direction:column;overflow:hidden}.header{margin-bottom:2rem;animation:fadeIn .6s ease;text-align:center}.main-content{display:grid;grid-template-columns:560px 1fr;gap:2.5rem;align-items:start;flex:1}.left-panel{display:flex;flex-direction:column;gap:1.5rem;align-items:center}.right-panel{display:flex;flex-direction:column;height:fit-content;max-height:calc(100vh - 280px);overflow:hidden}h1{font-size:3rem;margin-bottom:.5rem;color:#1a202c;font-weight:800;letter-spacing:-1px;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1.1}.subtitle{font-size:1.05rem;color:#718096;font-weight:400;max-width:600px;margin:0 auto}.input-section{animation:fadeIn .7s ease;display:flex;flex-direction:column;align-items:center;gap:1.5rem;width:100%}.grid-container{position:relative;display:inline-block}.grid{display:inline-block;background:#fff;padding:1.5rem;border-radius:20px;box-shadow:0 20px 60px #0000001f;border:2px solid #e2e8f0;position:relative}.path-lines{position:absolute;top:1.5rem;left:1.5rem;width:376px;height:376px;pointer-events:none;z-index:100;overflow:visible}.path-line{animation:drawLine .4s ease-out}.path-marker{animation:markerPop .3s cubic-bezier(.68,-.55,.265,1.55)}@keyframes drawLine{0%{stroke-dasharray:1000;stroke-dashoffset:1000}to{stroke-dasharray:1000;stroke-dashoffset:0}}@keyframes markerPop{0%{transform:scale(0);opacity:0}50%{transform:scale(1.3)}to{transform:scale(1);opacity:1}}.grid-row{display:flex;gap:12px;margin-bottom:12px}.grid-row:last-child{margin-bottom:0}.grid-cell-wrapper{position:relative;transition:all .3s cubic-bezier(.4,0,.2,1);z-index:1}.grid-cell-wrapper.highlighted{z-index:2}.grid-cell-input{width:85px;height:85px;background:#f7fafc;border:3px solid #e2e8f0;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:2.75rem;font-weight:800;color:#2d3748;text-align:center;text-transform:uppercase;transition:all .3s cubic-bezier(.4,0,.2,1);outline:none}.grid-cell-input:focus{border-color:#667eea;background:#fff;box-shadow:0 0 0 4px #667eea26;transform:scale(1.08)}.grid-cell-input:not(:placeholder-shown){background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-color:#667eea}.grid-cell-wrapper.highlighted .grid-cell-input{color:#fff;box-shadow:0 0 20px #667eea80;transform:scale(1.08);transition:all .3s cubic-bezier(.4,0,.2,1)}.path-number{position:absolute;top:4px;right:4px;background:#fff;color:#2d3748;width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700;box-shadow:0 2px 8px #0000004d;z-index:20;border:2px solid #667eea}.searching-overlay{position:absolute;inset:0;background:#fffffff2;border-radius:20px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;z-index:100}.spinner{width:50px;height:50px;border:4px solid #e2e8f0;border-top-color:#667eea;border-radius:50%;animation:spin 1s linear infinite}.searching-overlay p{font-size:1.1rem;font-weight:600;color:#667eea}.button-group{display:flex;justify-content:center;width:100%}.clear-btn{padding:14px 40px;font-size:1.05rem;font-weight:600;background:#fff;color:#4a5568;border:2px solid #e2e8f0;border-radius:12px;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);width:100%;max-width:450px;box-shadow:0 2px 8px #0000000d}.clear-btn:hover{background:#f7fafc;border-color:#cbd5e0;transform:translateY(-2px);box-shadow:0 4px 12px #0000001a}.clear-btn:active{transform:translateY(0);box-shadow:0 2px 4px #0000000d}.stats-panel{display:grid;grid-template-columns:1fr 1fr;gap:1rem;animation:fadeIn .5s ease;width:100%;max-width:450px}.stat-compact{background:linear-gradient(135deg,#fff,#f7fafc);padding:1.5rem;border-radius:14px;box-shadow:0 4px 16px #0000000f;border:2px solid #e2e8f0;display:flex;flex-direction:column;align-items:center;gap:.5rem;transition:all .2s cubic-bezier(.4,0,.2,1)}.stat-compact:hover{box-shadow:0 6px 20px #0000001a;border-color:#667eea}.stat-value-compact{font-size:2.5rem;font-weight:800;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1}.stat-label{font-size:.85rem;color:#718096;font-weight:600;text-transform:uppercase;letter-spacing:.5px}.words-section{display:flex;flex-direction:column;max-height:100%;background:#fff;border-radius:20px;box-shadow:0 8px 32px #0000001a;border:2px solid #e2e8f0;overflow:hidden;animation:fadeIn .6s ease}.words-header{padding:1.5rem 1.75rem;border-bottom:2px solid #e2e8f0;display:flex;justify-content:space-between;align-items:center;background:linear-gradient(135deg,#f7fafc,#fff)}.words-header h2{font-size:1.75rem;color:#2d3748;font-weight:700;margin:0}.words-count{font-size:.95rem;color:#718096;font-weight:600;background:#e9ecff;padding:6px 14px;border-radius:20px}.words-list{flex:1;overflow-y:auto;overflow-x:hidden;padding:1rem 1rem 1rem .5rem;margin-left:.5rem}.words-list::-webkit-scrollbar{width:10px}.words-list::-webkit-scrollbar-track{background:#f7fafc;border-radius:10px}.words-list::-webkit-scrollbar-thumb{background:linear-gradient(135deg,#667eea,#764ba2);border-radius:10px}.words-list::-webkit-scrollbar-thumb:hover{background:linear-gradient(135deg,#5568d3,#653b8c)}.word-item{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.25rem;margin-bottom:.5rem;margin-right:.5rem;background:#f7fafc;border-radius:12px;border:2px solid #e2e8f0;transition:all .2s cubic-bezier(.4,0,.2,1);cursor:pointer;animation:slideIn .3s ease}.word-item.best-word{background:linear-gradient(135deg,#fef5e7,#fff9e6);border-color:#f59e0b;position:relative}.word-item.best-word:before{content:"⭐";position:absolute;left:8px;top:50%;transform:translateY(-50%);font-size:1.2rem}.word-item.best-word .word-rank{margin-left:1.5rem}.word-item:hover,.word-item.active{background:linear-gradient(135deg,#667eea,#764ba2);border-color:#667eea;transform:scale(1.01);box-shadow:0 4px 16px #667eea4d;margin-right:0}.word-item:hover .word-text,.word-item.active .word-text,.word-item:hover .word-rank,.word-item.active .word-rank{color:#fff}.word-item:hover .word-score,.word-item.active .word-score{background:#ffffff40;color:#fff;border-color:#ffffff4d}.word-item:last-child{margin-bottom:0}.word-info{display:flex;align-items:center;gap:1rem}.word-rank{font-size:.85rem;font-weight:700;color:#a0aec0;min-width:35px}.word-text{font-size:1.25rem;font-weight:700;color:#2d3748;text-transform:uppercase;letter-spacing:.5px}.word-stats{display:flex;align-items:center}.word-score{font-size:1.1rem;font-weight:800;color:#667eea;background:#e9ecff;padding:8px 18px;border-radius:20px;white-space:nowrap;border:2px solid #d6dcff;transition:all .25s ease}.more-words{border-top:2px solid #e2e8f0;padding:1.25rem 1.75rem;cursor:pointer;background:#f7fafc}.more-words summary{font-size:1rem;font-weight:600;color:#667eea;list-style:none;display:flex;align-items:center;justify-content:center;gap:.5rem;-webkit-user-select:none;user-select:none;transition:color .2s ease}.more-words summary::-webkit-details-marker{display:none}.more-words summary:before{content:"▼";font-size:.75rem;transition:transform .3s ease}.more-words[open] summary:before{transform:rotate(180deg)}.more-words summary:hover{color:#5568d3}.words-list-compact{margin-top:1.25rem;display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:.5rem;max-height:400px;overflow-y:auto;overflow-x:hidden;padding-right:.5rem}.word-item-compact{display:flex;justify-content:space-between;align-items:center;padding:.75rem 1rem;background:#f7fafc;border-radius:8px;border:1px solid #e2e8f0;transition:all .15s ease;cursor:pointer}.word-item-compact:hover,.word-item-compact.active{background:linear-gradient(135deg,#667eea,#764ba2);border-color:#667eea}.word-item-compact:hover .word-text-compact,.word-item-compact.active .word-text-compact,.word-item-compact:hover .word-score-compact,.word-item-compact.active .word-score-compact{color:#fff}.word-text-compact{font-size:1rem;font-weight:600;color:#2d3748;text-transform:uppercase;letter-spacing:.3px}.word-score-compact{font-size:.9rem;font-weight:700;color:#667eea}.no-words{margin-top:3rem;padding:3rem;background:#fff;border-radius:16px;box-shadow:0 8px 24px #00000014;border:2px solid #e2e8f0;animation:fadeIn .5s ease}.no-words p{font-size:1.2rem;color:#718096;font-weight:500}.instructions-compact{padding:2rem;background:linear-gradient(135deg,#e9ecff,#f7fafc);border-radius:16px;border:2px solid #d6dcff;animation:fadeIn .6s ease;width:100%;max-width:450px;text-align:center}.instructions-compact h3{font-size:1.35rem;margin-bottom:1rem;color:#2d3748;font-weight:700}.instructions-compact p{font-size:1rem;color:#4a5568;line-height:1.6;margin-bottom:.75rem}.instructions-compact p:last-child{margin-bottom:0}.instructions-compact .tip{font-size:.95rem;color:#667eea;font-weight:600;margin-top:1rem}.path-legend{display:flex;gap:1.5rem;justify-content:center;padding:1rem;background:linear-gradient(135deg,#f7fafc,#e9ecff);border-radius:12px;border:2px solid #e2e8f0;max-width:450px;width:100%}.legend-item{display:flex;align-items:center;gap:.5rem;font-size:.9rem;font-weight:600;color:#4a5568}.legend-dot{width:14px;height:14px;border-radius:50%;border:2px solid white;box-shadow:0 2px 4px #0003}.start-dot{background:#10b981}.end-dot{background:#ef4444}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2.5rem 2rem;background:#fff;border-radius:20px;box-shadow:0 8px 32px #0000001a;border:2px solid #e2e8f0;animation:fadeIn .5s ease;min-height:250px}.empty-icon{font-size:3rem;margin-bottom:1rem;opacity:.5}.empty-state p{font-size:1.1rem;color:#718096;font-weight:500}.footer{text-align:center;padding:1.5rem 0 .5rem;margin-top:auto;border-top:2px solid #e2e8f0;animation:fadeIn .8s ease;flex-shrink:0}.footer p{font-size:.95rem;color:#718096;font-weight:500}.footer a{color:#667eea;text-decoration:none;font-weight:600;transition:color .2s ease}.footer a:hover{color:#5568d3;text-decoration:underline}@media(max-width:1200px){.main-content{grid-template-columns:1fr;gap:2rem}.right-panel{max-height:none}.words-section{max-height:600px}.footer{margin-top:2rem}}@media(max-width:768px){.app{padding:1rem}h1{font-size:2.5rem}.subtitle{font-size:1rem}.header{margin-bottom:1.5rem}.main-content{gap:1.5rem}.grid-cell-input{width:70px;height:70px;font-size:2.25rem}.path-number{width:20px;height:20px;font-size:.65rem}.stat-compact{padding:1.25rem}.stat-value-compact{font-size:2rem}.word-text{font-size:1.1rem}.word-rank{min-width:30px;font-size:.8rem}.words-list-compact{grid-template-columns:1fr}}@media(max-width:480px){.app{padding:1rem}h1{font-size:2rem}.header{margin-bottom:1rem}.main-content{gap:1rem}.grid{padding:1rem}.grid-cell-input{width:60px;height:60px;font-size:1.75rem;border-width:2px}.grid-row{gap:8px}.path-number{width:18px;height:18px;font-size:.6rem;top:2px;right:2px}.stats-panel{gap:.75rem}.stat-compact{padding:1rem}.stat-value-compact{font-size:1.75rem}.word-item{padding:.875rem 1rem}.word-item:hover,.word-item.active{transform:scale(1.02)}.word-text{font-size:1rem}.word-score{font-size:.95rem;padding:6px 14px}.instructions-compact{padding:1.5rem}.instructions-compact h3{font-size:1.2rem}.instructions-compact p{font-size:.95rem}.empty-icon{font-size:3rem}.empty-state p{font-size:1.1rem}}