*{margin:0;padding:0;box-sizing:border-box}html,body,#root{height:100%;width:100%;overflow:hidden}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:linear-gradient(135deg,#1a1a2e,#16213e);color:#e0e0e0}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:#1a1a2e}::-webkit-scrollbar-thumb{background:#4a4a6a;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#5a5a7a}.header{display:flex;align-items:center;justify-content:space-between;padding:8px 16px;background:#1a1a2ee6;border-bottom:1px solid #2a2a4a}.header-left{display:flex;align-items:center;gap:12px}.back-link{display:flex;align-items:center;gap:4px;color:#4ecdc4;text-decoration:none;font-size:13px;padding:4px 8px;border-radius:4px;transition:all .2s}.back-link:hover{background:#4ecdc41a;color:#6ee7df}.back-link svg{width:14px;height:14px}.header-center{flex:1;text-align:center}.title-link{color:#fff;text-decoration:none;font-size:18px;font-weight:600;transition:color .2s}.title-link:hover{color:#4ecdc4}.header-right{display:flex;align-items:center;gap:12px}.algorithm-btn{display:flex;align-items:center;gap:6px;padding:6px 12px;background:#4ecdc41a;border:1px solid #4ecdc4;border-radius:6px;color:#4ecdc4;font-size:13px;cursor:pointer;transition:all .2s}.algorithm-btn:hover{background:#4ecdc433}.algorithm-btn svg{width:16px;height:16px}.github-link{display:flex;align-items:center;gap:6px;color:#e0e0e0;text-decoration:none;padding:6px 10px;border-radius:6px;transition:all .2s}.github-link:hover{background:#ffffff1a;color:#fff}.github-link svg{width:20px;height:20px}.star-count{font-size:13px;color:gold}.input-panel{display:flex;align-items:center;gap:12px;padding:10px 16px;background:#1a1a2ecc;border-bottom:1px solid #2a2a4a;flex-wrap:wrap}.input-group{display:flex;align-items:center;gap:8px}.input-label{font-size:13px;color:#a0a0a0;white-space:nowrap}.input-field{width:280px;padding:6px 12px;background:#1a1a2e;border:1px solid #3a3a5a;border-radius:6px;color:#e0e0e0;font-size:14px;font-family:Monaco,Menlo,monospace;transition:border-color .2s}.input-field:focus{outline:none;border-color:#4ecdc4}.input-field.error{border-color:#ff6b6b}.apply-btn{padding:6px 16px;background:#4ecdc4;border:none;border-radius:6px;color:#1a1a2e;font-size:13px;font-weight:500;cursor:pointer;transition:all .2s}.apply-btn:hover{background:#6ee7df}.apply-btn:disabled{background:#3a3a5a;color:#6a6a8a;cursor:not-allowed}.examples-group{display:flex;align-items:center;gap:6px}.example-btn{padding:4px 10px;background:#4ecdc41a;border:1px solid #3a3a5a;border-radius:4px;color:#a0a0a0;font-size:12px;cursor:pointer;transition:all .2s}.example-btn:hover{border-color:#4ecdc4;color:#4ecdc4}.example-btn.active{background:#4ecdc433;border-color:#4ecdc4;color:#4ecdc4}.random-btn{display:flex;align-items:center;gap:4px;padding:4px 10px;background:#ffd7001a;border:1px solid #ffd700;border-radius:4px;color:gold;font-size:12px;cursor:pointer;transition:all .2s}.random-btn:hover{background:#ffd70033}.random-btn svg{width:12px;height:12px}.error-message{width:100%;padding:6px 12px;background:#ff6b6b1a;border:1px solid #ff6b6b;border-radius:4px;color:#ff6b6b;font-size:12px}.algorithm-tabs{display:flex;gap:4px;padding:8px 16px;background:#1a1a2eb3;border-bottom:1px solid #2a2a4a}.algorithm-tab{padding:8px 16px;background:transparent;border:1px solid transparent;border-radius:6px;color:#a0a0a0;font-size:13px;cursor:pointer;transition:all .2s}.algorithm-tab:hover{background:#4ecdc41a;color:#e0e0e0}.algorithm-tab.active{background:#4ecdc426;border-color:#4ecdc4;color:#4ecdc4}.algorithm-tab-info{display:flex;flex-direction:column;align-items:flex-start;gap:2px}.algorithm-tab-name{font-weight:500}.algorithm-tab-complexity{font-size:11px;color:#6a6a8a}.algorithm-tab.active .algorithm-tab-complexity{color:#4ecdc4;opacity:.7}.canvas-container{flex:1;position:relative;overflow:hidden;background:linear-gradient(180deg,#1a1a2e,#0f0f1a)}.canvas-svg{width:100%;height:100%;cursor:grab}.canvas-svg:active{cursor:grabbing}.canvas-controls{position:absolute;bottom:16px;right:16px;display:flex;flex-direction:column;gap:4px}.canvas-control-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:#1a1a2ee6;border:1px solid #3a3a5a;border-radius:6px;color:#a0a0a0;cursor:pointer;transition:all .2s}.canvas-control-btn:hover{background:#4ecdc41a;border-color:#4ecdc4;color:#4ecdc4}.canvas-control-btn svg{width:18px;height:18px}.step-description{position:absolute;top:16px;left:50%;transform:translate(-50%);padding:10px 20px;background:#1a1a2ef2;border:1px solid #3a3a5a;border-radius:8px;color:#e0e0e0;font-size:14px;max-width:80%;text-align:center;z-index:10}.legend{position:absolute;top:16px;left:16px;display:flex;gap:16px;padding:8px 12px;background:#1a1a2ee6;border:1px solid #3a3a5a;border-radius:6px}.legend-item{display:flex;align-items:center;gap:6px;font-size:12px;color:#a0a0a0}.legend-color{width:16px;height:16px;border-radius:4px}.legend-color.red{background:#ff6b6b}.legend-color.white{background:#f0f0f0}.legend-color.blue{background:#4ecdc4}.code-panel{width:380px;display:flex;flex-direction:column;background:#1a1a2ef2;border-left:1px solid #2a2a4a}.code-header{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;border-bottom:1px solid #2a2a4a}.code-title{font-size:13px;font-weight:500;color:#e0e0e0}.language-tabs{display:flex;gap:2px}.language-tab{padding:4px 10px;background:transparent;border:1px solid transparent;border-radius:4px;color:#6a6a8a;font-size:12px;cursor:pointer;transition:all .2s}.language-tab:hover{color:#a0a0a0}.language-tab.active{background:#4ecdc426;border-color:#4ecdc4;color:#4ecdc4}.code-content{flex:1;overflow:auto;padding:12px 0}.code-line{display:flex;padding:2px 12px;font-family:Monaco,Menlo,Consolas,monospace;font-size:12px;line-height:1.6;transition:background .2s}.code-line.highlighted{background:#4ecdc426}.code-line-number{width:32px;color:#4a4a6a;text-align:right;padding-right:12px;-webkit-user-select:none;user-select:none;flex-shrink:0}.code-line.highlighted .code-line-number{color:#4ecdc4}.code-line-content{flex:1;color:#e0e0e0;white-space:pre}.code-line-variable{margin-left:16px;padding:2px 8px;background:#ffd70026;border-radius:4px;color:gold;font-size:11px;white-space:nowrap}.code-keyword{color:#ff79c6}.code-type{color:#8be9fd}.code-number{color:#bd93f9}.code-string{color:#f1fa8c}.code-comment{color:#6272a4;font-style:italic}.code-function{color:#50fa7b}.code-operator{color:#ff79c6}.variables-panel{padding:12px;border-top:1px solid #2a2a4a;background:#0f0f1a80}.variables-title{font-size:12px;color:#6a6a8a;margin-bottom:8px}.variables-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(80px,1fr));gap:8px}.variable-item{display:flex;flex-direction:column;padding:6px 8px;background:#1a1a2ecc;border:1px solid #3a3a5a;border-radius:4px}.variable-name{font-size:11px;color:#6a6a8a}.variable-value{font-size:13px;color:#4ecdc4;font-family:Monaco,Menlo,monospace}.control-panel{display:flex;flex-direction:column;padding:12px 16px;background:#1a1a2ef2;border-top:1px solid #2a2a4a}.control-buttons{display:flex;align-items:center;justify-content:center;gap:8px;margin-bottom:12px}.control-btn{display:flex;align-items:center;justify-content:center;gap:6px;padding:8px 16px;background:#4ecdc41a;border:1px solid #3a3a5a;border-radius:6px;color:#e0e0e0;font-size:13px;cursor:pointer;transition:all .2s}.control-btn:hover{background:#4ecdc433;border-color:#4ecdc4}.control-btn:disabled{opacity:.5;cursor:not-allowed}.control-btn.primary{background:#4ecdc4;border-color:#4ecdc4;color:#1a1a2e}.control-btn.primary:hover{background:#6ee7df}.control-btn svg{width:16px;height:16px}.shortcut-hint{font-size:11px;color:#6a6a8a;margin-left:4px}.control-btn.primary .shortcut-hint{color:#1a1a2eb3}.speed-control{display:flex;align-items:center;gap:12px;margin-bottom:12px;padding:0 20px}.speed-label{font-size:12px;color:#a0a0a0;white-space:nowrap}.speed-slider-container{flex:1;display:flex;align-items:center;gap:8px}.speed-slider{flex:1;height:4px;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:#3a3a5a;border-radius:2px;cursor:pointer}.speed-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:14px;height:14px;background:#4ecdc4;border-radius:50%;cursor:pointer;transition:transform .2s}.speed-slider::-webkit-slider-thumb:hover{transform:scale(1.2)}.speed-value{font-size:13px;color:#4ecdc4;min-width:40px;text-align:right}.progress-container{position:relative;height:24px;background:#2a2a4a;border-radius:4px;overflow:hidden;cursor:pointer}.progress-bar{height:100%;background:linear-gradient(90deg,#4ecdc4,#45b7aa);transition:width .1s ease-out}.progress-handle{position:absolute;top:50%;transform:translate(-50%,-50%);width:12px;height:12px;background:#fff;border-radius:50%;box-shadow:0 2px 4px #0000004d;cursor:grab;transition:transform .1s}.progress-handle:hover{transform:translate(-50%,-50%) scale(1.2)}.progress-handle:active{cursor:grabbing}.progress-info{display:flex;justify-content:space-between;margin-top:6px;font-size:11px;color:#6a6a8a}.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 .2s ease-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{width:90%;max-width:600px;max-height:80vh;background:#1a1a2e;border:1px solid #3a3a5a;border-radius:12px;overflow:hidden;animation:slideIn .2s ease-out}@keyframes slideIn{0%{transform:translateY(-20px);opacity:0}to{transform:translateY(0);opacity:1}}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid #2a2a4a}.modal-title{font-size:16px;font-weight:600;color:#e0e0e0}.modal-close{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:transparent;border:none;border-radius:6px;color:#6a6a8a;cursor:pointer;transition:all .2s}.modal-close:hover{background:#ff6b6b1a;color:#ff6b6b}.modal-close svg{width:20px;height:20px}.modal-body{padding:20px;overflow-y:auto;max-height:calc(80vh - 60px)}.modal-body h2{font-size:18px;color:#4ecdc4;margin-bottom:12px}.modal-body h3{font-size:14px;color:#e0e0e0;margin:16px 0 8px}.modal-body p{font-size:14px;color:#a0a0a0;line-height:1.6;margin-bottom:8px}.modal-body ul{margin-left:20px;margin-bottom:12px}.modal-body li{font-size:14px;color:#a0a0a0;line-height:1.6;margin-bottom:4px}.modal-body code{padding:2px 6px;background:#4ecdc41a;border-radius:4px;color:#4ecdc4;font-family:Monaco,Menlo,monospace;font-size:13px}.floating-ball{position:fixed;bottom:24px;right:24px;z-index:100}.floating-ball-btn{width:56px;height:56px;display:flex;flex-direction:column;align-items:center;justify-content:center;background:linear-gradient(135deg,#07c160,#06ad56);border:none;border-radius:50%;color:#fff;cursor:pointer;box-shadow:0 4px 12px #07c16066;transition:all .3s}.floating-ball-btn:hover{transform:scale(1.1);box-shadow:0 6px 16px #07c16080}.floating-ball-btn svg{width:24px;height:24px}.floating-ball-text{font-size:9px;margin-top:2px}.qrcode-popup{position:absolute;bottom:70px;right:0;padding:16px;background:#fff;border-radius:12px;box-shadow:0 8px 24px #0000004d;animation:popIn .2s ease-out}@keyframes popIn{0%{transform:scale(.9);opacity:0}to{transform:scale(1);opacity:1}}.qrcode-popup img{width:180px;height:auto;border-radius:8px}.qrcode-tip{margin-top:12px;font-size:12px;color:#666;text-align:center;line-height:1.5}.qrcode-tip strong{color:#07c160}.app{height:100vh;display:flex;flex-direction:column;overflow:hidden}.main-content{flex:1;display:flex;overflow:hidden}.visualization-area{flex:1;display:flex;flex-direction:column;overflow:hidden}