*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;background:#000;color:#fff;overflow:hidden}.app{width:100vw;height:100vh;display:flex;flex-direction:column;background:#000}.control-panel{position:absolute;top:20px;left:20px;z-index:100;display:flex;flex-direction:column;gap:12px;background:#000000d9;padding:20px;border-radius:12px;border:1px solid rgba(0,255,255,.3);backdrop-filter:blur(10px);max-width:320px}.control-panel h1{font-size:18px;font-weight:600;color:#0ff;text-shadow:0 0 10px rgba(0,255,255,.5);margin-bottom:8px}.control-group{display:flex;flex-direction:column;gap:6px}.control-group label{font-size:12px;color:#ffffffb3;text-transform:uppercase;letter-spacing:.5px}.city-search{display:flex;gap:8px}.city-search input{flex:1;padding:10px 14px;background:#ffffff1a;border:1px solid rgba(0,255,255,.3);border-radius:6px;color:#fff;font-size:14px;outline:none;transition:border-color .2s}.city-search input:focus{border-color:#0ff;box-shadow:0 0 10px #00ffff4d}.city-search input::placeholder{color:#fff6}.btn{padding:10px 16px;background:linear-gradient(135deg,#0ff3,#00ffff1a);border:1px solid rgba(0,255,255,.5);border-radius:6px;color:#0ff;font-size:14px;font-weight:500;cursor:pointer;transition:all .2s}.btn:hover:not(:disabled){background:linear-gradient(135deg,#00ffff4d,#0ff3);box-shadow:0 0 20px #00ffff4d}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg,#0ff6,#00c8ff4d)}.btn-danger{background:linear-gradient(135deg,#ff008033,#ff00801a);border-color:#ff008080;color:#ff0080}.btn-danger:hover:not(:disabled){background:linear-gradient(135deg,#ff00804d,#ff008033);box-shadow:0 0 20px #ff00804d}select{padding:10px 14px;background:#ffffff1a;border:1px solid rgba(0,255,255,.3);border-radius:6px;color:#fff;font-size:14px;outline:none;cursor:pointer;transition:border-color .2s}select:focus{border-color:#0ff}select 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rgba(0,255,255,.2);font-size:12px}.legend-item{display:flex;align-items:center;gap:10px}.legend-color{width:24px;height:4px;border-radius:2px}.legend-color.roads{background:#fff9}.legend-color.visited{background:#0ff6;box-shadow:0 0 8px #00ffff80}.legend-color.path{background:#0ff;box-shadow:0 0 12px #0ffc}.legend-color.start{width:12px;height:12px;border-radius:50%;background:#0f0;box-shadow:0 0 10px #0f09}.legend-color.end{width:12px;height:12px;border-radius:50%;background:#ff0080;box-shadow:0 0 10px #ff008099}.canvas-container{flex:1;position:relative;overflow:hidden}.loading-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#000c;z-index:200}.loading-spinner{display:flex;flex-direction:column;align-items:center;gap:16px}.spinner{width:48px;height:48px;border:3px solid rgba(0,255,255,.2);border-top-color:#0ff;border-radius:50%;animation:spin 1s linear infinite}@keyframes 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0 12px currentColor}.color-swatch.active{border-color:#fff;box-shadow:0 0 12px currentColor}.color-swatch:disabled{opacity:.5;cursor:not-allowed}.color-input{width:24px;height:24px;padding:0;border:none;border-radius:4px;cursor:pointer;background:transparent}.color-input::-webkit-color-swatch-wrapper{padding:0}.color-input::-webkit-color-swatch{border:1px solid rgba(255,255,255,.3);border-radius:4px}.zoom-controls{position:absolute;bottom:20px;right:20px;z-index:100;display:flex;flex-direction:column;gap:4px;background:#000000d9;padding:8px;border-radius:8px;border:1px solid rgba(0,255,255,.3);backdrop-filter:blur(10px)}.zoom-controls button{width:36px;height:36px;background:#ffffff1a;border:1px solid rgba(0,255,255,.3);border-radius:6px;color:#0ff;font-size:18px;font-weight:600;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center}.zoom-controls button:hover{background:#0ff3;border-color:#00ffff80;box-shadow:0 0 15px #00ffff4d}.zoom-controls 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