:root{--bg-primary: #e8ecef;--bg-secondary: #d1d8dc;--bg-tertiary: #b8c0c6;--bg-panel: #ffffff;--bg-canvas: #f0f2f4;--rail-color: #1a2634;--rail-active: #1a8a3c;--accent: #2471a3;--accent-hover: #1f618d;--accent-active: #1a5276;--text-primary: #1a2634;--text-secondary: #4a5a6a;--text-muted: #7f8f9e;--success: #1a8a3c;--success-light: #2ecc71;--success-glow: rgba(26, 138, 60, .45);--success-glow-strong: rgba(26, 138, 60, .85);--warning: #d68910;--danger: #c0392b;--border-color: #c8d0d8;--border-strong: #a8b4be;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .14);--shadow-md: 0 2px 8px rgba(0, 0, 0, .16);--shadow-lg: 0 4px 16px rgba(0, 0, 0, .22);--wire-inactive: #6a7b8c;--wire-active: #1a8a3c;--rung-bg: rgba(255,255,255,.55);--rung-bg-alt: rgba(232,236,239,.6);--rung-number-bg: #1a2634;--rung-number-color: #e8ecef;--rung-height: 100px;--rail-width: 30px;--element-width: 64px;--element-height: 44px;--header-height: 48px;--footer-height: 28px}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{font-size:14px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:Segoe UI,-apple-system,BlinkMacSystemFont,Helvetica Neue,Arial,sans-serif;background:var(--bg-primary);color:var(--text-primary);min-height:100vh;display:flex;flex-direction:column;overflow:hidden}::selection{background:var(--accent);color:#fff}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:var(--bg-tertiary);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}@keyframes pulse-green{0%,to{filter:drop-shadow(0 0 3px var(--success-glow))}50%{filter:drop-shadow(0 0 10px var(--success-glow-strong))}}@keyframes wire-flow{0%{stroke-dashoffset:24}to{stroke-dashoffset:0}}@keyframes rail-flow{0%{stroke-dashoffset:0}to{stroke-dashoffset:-20}}.hidden{display:none!important}.app-container{display:flex;flex-direction:column;height:100vh;width:100vw;overflow:hidden}.header{height:var(--header-height);background:var(--bg-panel);border-bottom:2px solid var(--border-strong);padding:0 24px;display:flex;align-items:center;gap:16px;flex-shrink:0;box-shadow:var(--shadow-md);z-index:10}.header h1{font-size:15px;font-weight:700;color:var(--text-primary);letter-spacing:.04em;display:flex;align-items:center;gap:8px;text-transform:uppercase}.header h1:before{content:"⚡";font-size:16px}.header-controls{display:flex;gap:8px;margin-left:auto;align-items:center}.main{display:flex;flex:1;overflow:hidden}.toolbar{width:185px;min-width:185px;background:var(--bg-panel);border-right:2px solid var(--border-color);padding:12px;overflow-y:auto;flex-shrink:0;display:flex;flex-direction:column;gap:8px;box-shadow:2px 0 4px #0000000a}.toolbar h3{font-size:10px;text-transform:uppercase;color:var(--text-muted);margin-bottom:4px;letter-spacing:.08em;font-weight:700}.tool-group{display:flex;flex-direction:column;gap:4px}.canvas-container{flex:1;overflow:auto;padding:24px;background-image:radial-gradient(circle,rgba(0,0,0,.08) 1px,transparent 1px);background-size:24px 24px;background-color:var(--bg-canvas);display:flex;justify-content:center}.config-panel{width:300px;min-width:300px;background:var(--bg-panel);border-left:2px solid var(--border-color);overflow-y:auto;flex-shrink:0;display:flex;flex-direction:column;box-shadow:-3px 0 6px #0000000f}.config-panel-header{padding:12px 16px;border-bottom:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center;background:var(--bg-primary)}.config-panel-header h3{margin:0;font-size:11px;font-weight:700;color:var(--text-primary);text-transform:uppercase;letter-spacing:.06em}.config-panel-content{flex:1;overflow-y:auto;padding:16px}.config-panel-footer{padding:12px 16px;border-top:1px solid var(--border-color);background:var(--bg-primary);display:flex;gap:8px}.footer{height:var(--footer-height);padding:0 24px;background:var(--bg-panel);border-top:2px solid var(--border-color);color:var(--text-secondary);font-size:11px;display:flex;justify-content:space-between;align-items:center;flex-shrink:0}.footer .status{display:flex;align-items:center;gap:6px;font-weight:600}.footer .status:before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--text-muted)}.footer .status.running:before{background:var(--success);animation:pulse-green 2s ease-in-out infinite}.footer .cycle{font-family:SF Mono,Consolas,Menlo,monospace;color:var(--text-muted)}.btn{padding:6px 14px;border:1px solid var(--border-color);border-radius:4px;background:var(--bg-panel);color:var(--text-primary);font-family:inherit;font-size:12px;font-weight:500;cursor:pointer;transition:all .15s ease;display:inline-flex;align-items:center;gap:6px;white-space:nowrap}.btn:hover{background:var(--bg-primary);border-color:var(--accent);color:var(--accent)}.btn:active{background:var(--accent);color:#fff;border-color:var(--accent)}.btn-sm{padding:4px 8px;font-size:11px}.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover);color:#fff}.btn-danger{background:var(--danger);color:#fff;border-color:var(--danger)}.btn-danger:hover{background:#a93226;border-color:#a93226}.btn-success{background:var(--success);color:#fff;border-color:var(--success)}.btn-success:hover{background:#157a33;border-color:#157a33}.btn-close{background:none;border:none;font-size:18px;line-height:1;color:var(--text-muted);cursor:pointer;padding:2px 6px;border-radius:3px;transition:all .15s ease}.btn-close:hover{background:var(--bg-primary);color:var(--danger)}.toolbar{display:flex;flex-direction:column;gap:8px}.toolbar h3{font-size:10px;text-transform:uppercase;color:var(--text-muted);font-weight:700;letter-spacing:.06em;margin:0 0 4px;padding:0}.tool-group{display:flex;flex-direction:column;gap:2px}.tool-item{padding:6px 10px;margin-bottom:0;border-radius:4px;font-size:12px;font-weight:500;cursor:grab;background:var(--bg-primary);border:1px solid var(--border-color);transition:all .15s ease;-webkit-user-select:none;user-select:none;color:var(--text-primary);display:flex;align-items:center;gap:8px}.tool-item:hover{border-color:var(--accent);background:#def;color:var(--accent);box-shadow:var(--shadow-sm)}.tool-item:active{cursor:grabbing}.tool-item .tool-icon{display:flex;align-items:center;justify-content:center;width:20px;height:16px;flex-shrink:0;color:var(--text-primary)}.tool-item:hover .tool-icon{color:var(--accent)}.tool-label{font-size:11px;line-height:1.2;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.config-form{display:flex;flex-direction:column}.config-group{background:var(--bg-panel);border-radius:4px;margin-bottom:12px;overflow:hidden;border:1px solid var(--border-color)}.config-group-header{background:var(--bg-secondary);padding:6px 12px;font-size:10px;text-transform:uppercase;font-weight:700;color:var(--text-secondary);letter-spacing:.06em;border-bottom:1px solid var(--border-color)}.config-group-content{padding:12px;display:flex;flex-direction:column;gap:12px}.config-field{display:flex;flex-direction:column;gap:4px}.config-field label{font-size:11px;text-transform:uppercase;color:var(--text-secondary);font-weight:600;letter-spacing:.03em}.config-field input,.config-field select{background:var(--bg-panel);border:1px solid var(--border-color);color:var(--text-primary);padding:6px 8px;border-radius:4px;font-family:SF Mono,Consolas,Menlo,monospace;font-size:12px;transition:border-color .15s ease}.config-field input:focus,.config-field select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px #2471a32e}.program-manager{position:relative;display:inline-block}.program-list-dropdown{position:absolute;top:calc(100% + 8px);right:0;width:280px;background:var(--bg-panel);border:1px solid var(--border-color);border-radius:6px;box-shadow:var(--shadow-lg);z-index:1000;display:flex;flex-direction:column;max-height:400px;overflow:hidden}.list-header{padding:10px 14px;border-bottom:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center}.list-title{font-size:11px;font-weight:700;text-transform:uppercase;color:var(--text-secondary);letter-spacing:.04em}.list-items{overflow-y:auto;flex:1;max-height:300px}.list-item{padding:8px 14px;display:flex;justify-content:space-between;align-items:center;cursor:pointer;font-size:13px;border-bottom:1px solid var(--border-color);transition:background .15s ease}.list-item:hover{background:var(--bg-primary)}.list-item:last-child{border-bottom:none}.item-name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-right:8px;color:var(--text-primary)}.item-name.active{color:var(--accent);font-weight:600}.item-actions{display:flex;gap:4px}.btn-icon{background:none;border:none;cursor:pointer;font-size:13px;padding:3px;border-radius:3px;opacity:.5;transition:all .15s ease}.btn-icon:hover{opacity:1;background:var(--bg-primary)}.list-footer{padding:8px 12px;border-top:1px solid var(--border-color);display:flex;justify-content:flex-end;gap:8px;background:var(--bg-primary)}.empty-list{padding:20px;text-align:center;color:var(--text-muted);font-size:12px}.rename-dialog{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);width:320px;background:var(--bg-panel);border:1px solid var(--border-color);border-radius:8px;padding:24px;z-index:2000;display:flex;flex-direction:column;gap:16px;box-shadow:var(--shadow-lg)}.rename-dialog h4{font-size:15px;margin-bottom:4px;color:var(--text-primary)}.rename-dialog input{background:var(--bg-primary);border:1px solid var(--border-color);color:var(--text-primary);padding:8px 12px;border-radius:4px;font-family:inherit;font-size:13px}.rename-dialog input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px #2471a32e}.dialog-actions{display:flex;justify-content:flex-end;gap:8px}.element-plate{transition:opacity .12s ease}.element-plate:hover .element-bg{stroke:var(--accent);stroke-width:1.5;fill:#f0f7ff}.element-plate.selected .element-bg{stroke:var(--accent);stroke-width:2.5;fill:#e0f0ff}.element-plate.active .element-bg{stroke:var(--success);stroke-width:2;fill:#e6f9ee}.element-bg{fill:var(--bg-panel);stroke:var(--border-strong);stroke-width:1;filter:drop-shadow(0 1px 3px rgba(0,0,0,.1));transition:all .15s ease}.element-plate.active .element-bg{filter:drop-shadow(0 0 8px var(--success-glow));animation:pulse-green 1.8s ease-in-out infinite}.element-symbol{fill:var(--text-primary);pointer-events:none}.element-plate.active .element-symbol{fill:var(--success)}.element-label{fill:var(--text-secondary);font-family:SF Mono,Consolas,Menlo,monospace;font-size:9px;pointer-events:none}.element-label-above{fill:var(--text-primary);font-family:SF Mono,Consolas,Menlo,monospace;font-size:9px;pointer-events:none;font-weight:600}.element-plate.active .element-label,.element-plate.active .element-label-above{fill:var(--success);font-weight:700}.ladder-rail{stroke:var(--rail-color);stroke-width:6;stroke-linecap:butt}.ladder-rail.active{stroke:var(--success);filter:drop-shadow(0 0 4px var(--success-glow))}.ladder-wire{stroke:var(--wire-inactive);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.ladder-wire.active{stroke:var(--wire-active);stroke-width:2.5;filter:drop-shadow(0 0 3px var(--success-glow))}.rung-bg{opacity:1}.ladder-rung-number-bg{fill:var(--rung-number-bg)}.ladder-rung-number{fill:var(--rung-number-color);font-family:SF Mono,Consolas,Menlo,monospace;font-size:10px;font-weight:700;letter-spacing:.02em}.branch-bus{stroke-linecap:round}.wire-dot{fill:var(--wire-inactive)}.wire-dot.active{fill:var(--wire-active);filter:drop-shadow(0 0 2px var(--success-glow))}.no-program{display:flex;align-items:center;justify-content:center;width:100%;height:100%;color:var(--text-muted);font-size:14px}