*{box-sizing:border-box;margin:0;padding:0}:root{--bg-page:#f8f9fa;--bg-card:#fff;--bg-input:#fff;--bg-info:#f8f9fa;--bg-aliases:#f1f3f5;--text-primary:#212529;--text-secondary:#495057;--text-muted:#6c757d;--text-aliases:#868e96;--border-color:#dee2e6;--border-light:#e9ecef;--shadow-card:0 1px 3px #0000001a;--focus-ring:#0d6efd40;--svg-bg:#fff;--grid-line:#e9ecef;--btn-outline-bg:#fff;--btn-outline-hover-bg:#0d6efd;--btn-outline-hover-color:#fff;--btn-disabled-bg:#6c757d}[data-theme=dark]{--bg-page:#1a1a2e;--bg-card:#16213e;--bg-input:#1a1a2e;--bg-info:#0f3460;--bg-aliases:#1a1a2e;--text-primary:#e4e6eb;--text-secondary:#b0b3b8;--text-muted:#8a8d91;--text-aliases:#8a8d91;--border-color:#3a3f47;--border-light:#2d3139;--shadow-card:0 1px 3px #0000004d;--focus-ring:#4285f459;--svg-bg:#1e293b;--grid-line:#2d3748;--btn-outline-bg:transparent;--btn-outline-hover-bg:#0d6efd;--btn-outline-hover-color:#fff;--btn-disabled-bg:#4a4f57}body{background:var(--bg-page);color:var(--text-primary);min-height:100vh;transition:background-color .3s,color .3s;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif}.app{max-width:1200px;margin:0 auto;padding:clamp(12px,3vw,24px)}.app-header{display:flex;position:relative;justify-content:center;align-items: center;margin-bottom:clamp(16px,3vw,24px)}.app-header h1{color:var(--text-primary);text-align:center;font-size:clamp(1.25rem,4vw,1.5rem);font-weight:600}.theme-toggle{position:absolute;background:var(--bg-card);border:1px solid var(--border-color);display:flex;cursor:pointer;color:var(--text-primary);box-shadow:var(--shadow-card);border-radius:8px;justify-content:center;align-items: center;width:36px;height:36px;transition:background-color .2s,border-color .2s;font-size:1.1rem;line-height:1;top:50%;right:0;transform:translateY(-50%)}.theme-toggle:hover{border-color:#0d6efd}.theme-toggle:active:not(:disabled){transform:translateY(-50%)scale(.98)}.controls{display:flex;background:var(--bg-card);box-shadow:var(--shadow-card);border-radius:8px;flex-wrap:wrap;justify-content:center;align-items: flex-end;gap:clamp(8px,2vw,16px);margin-bottom:clamp(16px,3vw,24px);padding:clamp(12px,2vw,16px);transition:background-color .3s,box-shadow .3s}.control-group{display:flex;flex-direction:column;gap:4px}.control-group label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;font-size:.75rem;font-weight:500}.control-group input,.control-group select{border:1px solid var(--border-color);background:var(--bg-input);color:var(--text-primary);border-radius:6px;min-width:80px;max-width:120px;height:36px;padding:8px 12px;transition:border-color .2s,background-color .3s;font-size:.875rem}.control-group input:focus,.control-group select:focus{outline:none;box-shadow:0 0 0 2px var(--focus-ring);border-color:#0d6efd}.control-group input:disabled,.control-group select:disabled{opacity:.5;cursor:not-allowed;background:var(--bg-info)}.buttons{display:flex;align-items: flex-end;gap:8px}button{cursor:pointer;border:none;border-radius:6px;height:36px;padding:8px 16px;transition:background-color .2s,transform .1s,opacity .2s;font-size:.875rem;font-weight:500}button:active:not(:disabled){transform:scale(.98)}.btn-primary{color:#fff;background:#0d6efd}.btn-primary:hover:not(:disabled){background:#0b5ed7}.btn-primary:disabled{background:var(--btn-disabled-bg);cursor:not-allowed;opacity:.65}.btn-secondary{color:#fff;background:#6c757d}.btn-secondary:hover:not(:disabled){background:#5c636a}.btn-secondary.btn-active{background:#198754}.btn-outline{background:var(--btn-outline-bg);color:#0d6efd;border:1px solid #0d6efd}.btn-outline:hover:not(:disabled){background:var(--btn-outline-hover-bg);color:var(--btn-outline-hover-color)}.btn-outline:disabled{opacity:.5;cursor:not-allowed;background:var(--btn-outline-bg);color:var(--text-muted);border-color:var(--text-muted)}.btn-outline:disabled:hover{background:var(--btn-outline-bg);color:var(--text-muted)}.speed-control{display:flex;align-items: center;gap:8px;height:36px}.speed-control span{color:var(--text-secondary);flex-shrink:0;font-size:.8rem}.speed-control input[type=range]{-webkit-appearance:none;appearance:none;width:100px;margin:0;padding:0}.visualization-container{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,400px),1fr));gap:clamp(16px,3vw,24px)}.visualization{background:var(--bg-card);box-shadow:var(--shadow-card);overflow:hidden;border-radius:8px;transition:background-color .3s,box-shadow .3s}.visualization-header{border-bottom:1px solid var(--border-color);display:flex;justify-content:space-between;align-items: center;gap:8px;padding:12px 16px}.algorithm-select{border:1px solid var(--border-color);color:var(--text-primary);background:var(--bg-input);cursor:pointer;border-radius:6px;min-width:120px;padding:6px 10px;transition:border-color .2s,background-color .3s;font-size:clamp(.8rem,2vw,.9rem);font-weight:600}.algorithm-select:disabled{opacity:.5;cursor:not-allowed}.algorithm-select:focus{outline:none;box-shadow:0 0 0 2px var(--focus-ring);border-color:#0d6efd}.visualization-stats{color:var(--text-muted);white-space:nowrap;font-size:.75rem}.algorithm-aliases{color:var(--text-aliases);background:var(--bg-aliases);text-align:center;padding:6px 16px;transition:background-color .3s;font-size:clamp(.6rem,1.5vw,.7rem);font-style:italic}.canvas-wrapper{display:flex;overflow:hidden;justify-content:center;align-items: center;padding:clamp(8px,2vw,16px)}canvas,svg{border:1px solid var(--border-color);border-radius:6px;max-width:100%;height:auto}.tsp-svg{background:var(--svg-bg);transition:background-color .3s}.grid-line{stroke:var(--grid-line)}.point-label{fill:var(--text-secondary)}.step-info{border-top:1px solid var(--border-color);color:var(--text-secondary);background:var(--bg-info);min-height:42px;padding:12px 16px;transition:background-color .3s,color .3s;font-size:.875rem}.manual-actions{display:flex;border-top:1px solid var(--border-color);justify-content:center;gap:8px;padding:8px 16px}.btn-small{height:28px;padding:4px 12px;font-size:.8rem}.manual-speed-label{font-style:italic}.legend{display:flex;border-top:1px solid var(--border-color);color:var(--text-secondary);flex-wrap:wrap;justify-content:center;gap:clamp(8px,2vw,16px);padding:clamp(8px,2vw,12px) clamp(12px,2vw,16px);font-size:clamp(.65rem,1.5vw,.75rem)}.legend-item{display:flex;align-items: center;gap:6px}.legend-color{border-radius:3px;flex-shrink:0;width:12px;height:12px}.tooltip-wrapper{position:relative;display:inline-block}.tooltip-wrapper[data-tooltip]:hover:after{content:attr(data-tooltip);position:absolute;background:var(--text-primary);color:var(--bg-card);white-space:nowrap;z-index:10;pointer-events:none;border-radius:4px;padding:4px 8px;font-size:.75rem;bottom:calc(100% + 6px);left:50%;transform:translate(-50%)}.language-selector{position:absolute;top:50%;left:0;transform:translateY(-50%)}.language-selector select{background:var(--bg-card);border:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;box-shadow:var(--shadow-card);border-radius:8px;height:36px;padding:6px 8px;font-size:.8rem}.language-selector select:focus{outline:none;box-shadow:0 0 0 2px var(--focus-ring);border-color:#0d6efd}@media (max-width:480px){.controls{flex-direction:column;align-items:stretch}.control-group{width:100%}.control-group input,.control-group select{width:100%;max-width:none}.buttons{flex-wrap:wrap;justify-content:center;width:100%}.speed-control{justify-content:space-between;width:100%}.speed-control input[type=range]{flex:1;width:auto}.visualization-header{text-align:center;flex-direction:column;gap:4px}.app-header h1{padding-right:40px}}@media (min-width:481px) and (max-width:768px){.controls{justify-content:space-around}}@media (max-width:768px){.visualization-container{grid-template-columns:1fr}}