:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;--bg-primary: #f5f5f5;--bg-secondary: #fff;--bg-tertiary: #e8e8e8;--bg-sidebar: #f8f9fa;--bg-header: #2c3e50;--text-primary: #333;--text-secondary: #666;--text-muted: #999;--border-color: #ddd;--border-light: #eee;--accent-color: #3498db;--accent-hover: #2980b9;--success-color: #00aa00;--error-color: #cc0000;--canvas-bg: #fff;--grid-color: #e0e0e0;--btn-bg: #fff;--btn-border: #ccc;--btn-hover: #e8e8e8;color-scheme:light;color:var(--text-primary);background-color:var(--bg-primary);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}[data-theme=dark]{--bg-primary: #1a1a2e;--bg-secondary: #16213e;--bg-tertiary: #2a2a4a;--bg-sidebar: #1f2940;--bg-header: #0f3460;--text-primary: #e8e8e8;--text-secondary: #b0b0b0;--text-muted: #777;--border-color: #3a3a5a;--border-light: #2a2a4a;--accent-color: #4fc3dc;--accent-hover: #3ba8bd;--success-color: #4caf50;--error-color: #ff6b6b;--canvas-bg: #252540;--grid-color: #3a3a5a;--btn-bg: #2a2a4a;--btn-border: #4a4a6a;--btn-hover: #3a3a5a;color-scheme:dark;color:var(--text-primary);background-color:var(--bg-primary)}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;min-width:320px;min-height:100vh}#root{width:100%;height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:4px;border:1px solid var(--btn-border);padding:.5em 1em;font-size:.9em;font-weight:500;font-family:inherit;background-color:var(--btn-bg);color:var(--text-primary);cursor:pointer;transition:all .2s}button:hover{background-color:var(--btn-hover);border-color:var(--accent-color)}button:focus,button:focus-visible{outline:2px solid var(--accent-color);outline-offset:1px}button:disabled{opacity:.5;cursor:not-allowed}select,input[type=number],input[type=text]{background-color:var(--btn-bg);color:var(--text-primary);border:1px solid var(--btn-border)}.wizard-overlay{position:fixed;inset:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:1000;backdrop-filter:blur(2px)}.wizard-modal{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:12px;width:90vw;max-width:900px;max-height:85vh;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 20px 60px #0000004d}.wizard-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border-color);background:var(--bg-sidebar)}.wizard-header h2{margin:0;font-size:18px;font-weight:600}.wizard-close{background:none;border:none;font-size:24px;color:var(--text-secondary);cursor:pointer;padding:0 8px;line-height:1}.wizard-close:hover{color:var(--text-primary)}.wizard-steps{display:flex;justify-content:center;gap:8px;padding:16px 20px;border-bottom:1px solid var(--border-color);background:var(--bg-secondary)}.wizard-step{display:flex;align-items:center;gap:8px;padding:8px 16px;border-radius:20px;font-size:13px;color:var(--text-secondary);cursor:default;transition:all .2s}.wizard-step.completed{color:var(--text-secondary);cursor:pointer}.wizard-step.completed:hover{background:var(--btn-hover)}.wizard-step.active{background:var(--accent-color);color:#fff}.step-number{width:24px;height:24px;border-radius:50%;background:var(--btn-bg);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600}.wizard-step.active .step-number{background:#fff3}.wizard-step.completed .step-number{background:#22c55e;color:#fff}.wizard-content{flex:1;overflow-y:auto;padding:20px}.step-content{min-height:300px}.step-description{margin-bottom:20px}.step-description h3{margin:0 0 8px;font-size:16px}.step-description p{margin:0;color:var(--text-secondary);font-size:13px}.wizard-footer{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-top:1px solid var(--border-color);background:var(--bg-sidebar)}.wizard-info{font-size:13px;color:var(--text-secondary)}.wizard-actions{display:flex;gap:10px}.wizard-btn{padding:10px 20px;border-radius:6px;font-size:13px;font-weight:500;cursor:pointer;transition:all .2s;border:none}.wizard-btn.primary{background:var(--accent-color);color:#fff}.wizard-btn.primary:hover:not(:disabled){filter:brightness(1.1)}.wizard-btn.primary:disabled{opacity:.5;cursor:not-allowed}.wizard-btn.secondary{background:var(--btn-bg);color:var(--text-primary);border:1px solid var(--border-color)}.wizard-btn.secondary:hover{background:var(--btn-hover)}.select-columns{display:grid;grid-template-columns:1fr 1fr;gap:20px}.select-column h4{margin:0 0 12px;font-size:13px;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px}.search-input{width:100%;padding:10px 12px;border:1px solid var(--border-color);border-radius:6px;background:var(--btn-bg);color:var(--text-primary);font-size:13px;margin-bottom:12px;box-sizing:border-box}.component-list{max-height:300px;overflow-y:auto;border:1px solid var(--border-color);border-radius:6px;background:var(--bg-secondary)}.component-item{display:flex;align-items:center;gap:10px;padding:10px 12px;cursor:pointer;border-bottom:1px solid var(--border-color);transition:background .15s}.component-item:last-child{border-bottom:none}.component-item:hover{background:var(--btn-hover)}.component-item.selected{background:var(--bg-primary)}.comp-icon{font-size:16px}.comp-name{flex:1;font-size:13px}.comp-add{color:var(--accent-color);font-weight:600;font-size:16px}.qty-controls{display:flex;align-items:center;gap:4px}.qty-controls button{width:24px;height:24px;border:1px solid var(--border-color);border-radius:4px;background:var(--btn-bg);color:var(--text-primary);cursor:pointer;font-size:14px;padding:3px}.qty-controls button:hover{background:var(--btn-hover)}.qty-controls .qty{min-width:24px;text-align:center;font-size:13px;font-weight:500}.remove-btn{background:none;border:none;color:#ef4444;font-size:18px;cursor:pointer;padding:0 4px}.empty-hint{color:var(--text-secondary);font-size:12px;text-align:center;padding:20px;margin:0}.connect-layout{display:grid;grid-template-columns:2fr 1fr;gap:20px}.components-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}.comp-card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:8px;padding:12px}.comp-card-header{display:flex;align-items:center;gap:8px;font-size:12px;margin-bottom:10px;color:var(--text-primary)}.pads-row{display:flex;flex-wrap:wrap;gap:6px}.pad-btn{width:28px;height:28px;border:2px solid 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10px;background:var(--btn-bg);border-radius:4px;margin-bottom:6px;font-size:12px}.conn-item button{background:none;border:none;color:#ef4444;cursor:pointer;font-size:16px}.arrangements-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}.arrangement-card{background:var(--bg-secondary);border:2px solid var(--border-color);border-radius:10px;padding:16px;cursor:pointer;transition:all .2s}.arrangement-card:hover{border-color:var(--accent-color)}.arrangement-card.selected{border-color:var(--accent-color);background:#4a9eff1a}.arr-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.arr-header h4{margin:0;font-size:14px}.arr-score{background:var(--accent-color);color:#fff;padding:2px 8px;border-radius:10px;font-size:12px;font-weight:600}.arr-desc{margin:0 0 12px;font-size:12px;color:var(--text-secondary)}.arr-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:12px}.metric{text-align:center}.metric-label{display:block;font-size:10px;color:var(--text-secondary);text-transform:uppercase}.metric-value{font-size:13px;font-weight:500}.arr-preview{display:flex;justify-content:center}.enclosure-toggle{display:flex;align-items:center;gap:8px;margin-top:12px;font-size:13px;cursor:pointer}.arrange-step.loading{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:300px}.loading-spinner{font-size:48px;animation:spin 2s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.preview-summary{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:20px}.summary-card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:8px;padding:16px;text-align:center}.summary-card h4{margin:0 0 8px;font-size:14px}.summary-card p{margin:0;font-size:20px;font-weight:600;color:var(--accent-color)}.preview-large{display:flex;justify-content:center;margin-bottom:20px}.preview-details{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:8px;padding:16px}.preview-details h4{margin:0 0 12px;font-size:13px}.preview-details ul{margin:0;padding:0 0 0 20px;font-size:12px;max-height:150px;overflow-y:auto}.preview-details li{margin-bottom:4px}.mini-preview{background:var(--bg-primary);border-radius:6px}.mini-preview.empty{display:flex;align-items:center;justify-content:center;height:100px;color:var(--text-secondary);font-size:12px}.mini-preview.large{border:1px solid var(--border-color)}.auto-detect-section{display:flex;gap:10px;margin-top:12px}.auto-detect-btn{background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff;border:none;padding:8px 16px;border-radius:6px;font-size:13px;font-weight:500;cursor:pointer;transition:all .2s}.auto-detect-btn:hover{filter:brightness(1.1);transform:translateY(-1px)}.clear-auto-btn{background:var(--btn-bg);color:var(--text-secondary);border:1px solid var(--border-color);padding:8px 12px;border-radius:6px;font-size:12px;cursor:pointer}.clear-auto-btn:hover{background:var(--btn-hover);color:#ef4444}.detection-stats{margin-top:10px;padding:8px 12px;background:#22c55e1a;border:1px solid rgba(34,197,94,.3);border-radius:6px;font-size:12px;color:#22c55e}.detection-stats .unknown-warn{color:#f59e0b}.component-item.expanded{flex-direction:column;align-items:stretch;padding:10px 12px}.comp-main-row{display:flex;align-items:center;gap:10px}.comp-role-badge{font-size:10px;padding:2px 6px;border-radius:10px;background:var(--btn-bg);color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px}.comp-constraints-row{display:flex;gap:12px;margin-top:8px;padding-top:8px;border-top:1px solid var(--border-color)}.constraint-label{display:flex;align-items:center;gap:6px;font-size:11px;color:var(--text-secondary)}.constraint-label select{padding:4px 8px;border:1px solid var(--border-color);border-radius:4px;background:var(--btn-bg);color:var(--text-primary);font-size:11px;cursor:pointer}.constraint-label select:focus{outline:none;border-color:var(--accent-color)}.conn-item.auto{background:#f59e0b1a;border-left:3px solid #f59e0b}.conn-item.power{background:#ef44441a;border-left:3px solid #ef4444}.conn-item.ground{background:#22c55e1a;border-left:3px solid #22c55e}.conn-details{flex:1;display:flex;flex-direction:column;gap:4px}.conn-path{font-size:11px}.net-name-input{width:100px;padding:3px 6px;border:1px solid var(--border-color);border-radius:3px;background:var(--bg-primary);color:var(--text-primary);font-size:11px}.net-name-input::placeholder{color:var(--text-secondary);opacity:.6}.net-name-input:focus{outline:none;border-color:var(--accent-color)}.pad-btn.power{background:#ef4444;border-color:#ef4444;color:#fff}.pad-btn.ground{background:#22c55e;border-color:#22c55e;color:#fff}.arrange-options{display:flex;flex-direction:column;gap:8px;margin-top:12px}.option-toggle{display:flex;align-items:center;gap:8px;font-size:13px;cursor:pointer}.option-toggle input[type=checkbox]{width:16px;height:16px;accent-color:var(--accent-color)}.notification-container{position:fixed;top:20px;right:20px;z-index:10000;display:flex;flex-direction:column;gap:12px;pointer-events:none}.notification{display:flex;align-items:center;gap:12px;min-width:300px;max-width:500px;padding:16px 20px;background:var(--bg-secondary);border-radius:8px;box-shadow:0 4px 12px #0000004d;border-left:4px solid;cursor:pointer;pointer-events:all;animation:slideIn .3s ease-out;transition:transform .2s,opacity .2s}.notification:hover{transform:translate(-4px)}@keyframes slideIn{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.notification-icon{font-size:20px;font-weight:700;flex-shrink:0;width:24px;height:24px;display:flex;align-items:center;justify-content:center;border-radius:50%}.notification-message{flex:1;color:var(--text-primary);font-size:14px;line-height:1.4}.notification-close{background:none;border:none;color:var(--text-secondary);font-size:18px;cursor:pointer;padding:4px;line-height:1;opacity:.6;transition:opacity .2s;flex-shrink:0}.notification-close:hover{opacity:1}.notification-success{border-left-color:#10b981}.notification-success .notification-icon{color:#10b981;background:#10b9811a}.notification-error{border-left-color:#ef4444}.notification-error .notification-icon{color:#ef4444;background:#ef44441a}.notification-warning{border-left-color:#f59e0b}.notification-warning .notification-icon{color:#f59e0b;background:#f59e0b1a}.notification-info{border-left-color:#3b82f6}.notification-info .notification-icon{color:#3b82f6;background:#3b82f61a}.dialog-overlay{position:fixed;inset:0;z-index:10001;pointer-events:all}.dialog-backdrop{position:fixed;inset:0;background:#0009;backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;animation:fadeIn .2s ease-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.dialog{background:var(--bg-secondary);border-radius:12px;box-shadow:0 8px 32px #0006;min-width:400px;max-width:500px;max-height:90vh;overflow:hidden;animation:slideUp .3s ease-out;border:1px solid var(--border-color)}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.dialog-header{padding:20px 24px 16px;border-bottom:1px solid var(--border-color)}.dialog-title{margin:0;font-size:18px;font-weight:600;color:var(--text-primary)}.dialog-body{padding:24px}.dialog-message{margin:0 0 16px;color:var(--text-secondary);font-size:14px;line-height:1.5;white-space:pre-wrap}.dialog-input{width:100%;padding:10px 12px;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:6px;color:var(--text-primary);font-size:14px;font-family:inherit;outline:none;transition:border-color .2s}.dialog-input:focus{border-color:var(--accent-color);box-shadow:0 0 0 3px #3b82f61a}.dialog-footer{padding:16px 24px;border-top:1px solid var(--border-color);display:flex;gap:12px;justify-content:flex-end}.dialog-button{padding:10px 20px;border:none;border-radius:6px;font-size:14px;font-weight:500;cursor:pointer;transition:all .2s;min-width:80px}.dialog-button-cancel{background:var(--bg-primary);color:var(--text-secondary);border:1px solid var(--border-color)}.dialog-button-cancel:hover{background:var(--bg-tertiary);border-color:var(--text-secondary)}.dialog-button-confirm{background:var(--accent-color);color:#fff}.dialog-button-confirm:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 4px 12px #3b82f64d}.dialog-button-confirm:active{transform:translateY(0)}.app{display:flex;flex-direction:column;height:100vh;font-family:system-ui,-apple-system,sans-serif;background:var(--bg-primary);color:var(--text-primary)}.app-header{display:flex;align-items:center;padding:0 12px;gap:8px;background:var(--bg-sidebar);border-bottom:1px solid var(--border-color)}.app-header h1{margin:0;font-size:20px}.app-logo{height:28px}:root .app-logo{filter:invert(1)}[data-theme=dark] .app-logo{filter:none}.header-spacer{flex:1}.app-content{display:flex;flex:1;overflow:hidden}.sidebar-left,.sidebar-right{background:var(--bg-sidebar);border-right:1px solid var(--border-color);overflow-y:auto}.sidebar-left{width:220px;flex-shrink:0;padding:0;color:var(--text-primary)}.sidebar-left::-webkit-scrollbar{width:6px}.sidebar-left::-webkit-scrollbar-track{background:transparent}.sidebar-left::-webkit-scrollbar-thumb{background:#64646466;border-radius:3px}.sidebar-left::-webkit-scrollbar-thumb:hover{background:#64646499}.sidebar-right{width:320px;flex-shrink:0;border-right:none;border-left:1px solid var(--border-color);color:var(--text-primary);transition:width .2s ease,min-width .2s ease}.sidebar-right.collapsed{width:0;min-width:0;overflow:hidden;border-left:none}.sidebar-hint{color:var(--text-secondary);font-size:12px}.main-area{flex:1;min-width:0;display:flex;flex-direction:column;background:var(--bg-secondary);overflow:hidden}.view-tabs{display:flex;gap:0;background:var(--bg-primary);border-bottom:1px solid var(--border-color)}.view-tab{padding:10px 20px;border:none;border-radius:0;background:transparent;color:var(--text-secondary);font-size:13px;font-weight:500;cursor:pointer;border-bottom:2px solid transparent;transition:all .2s}.view-tab:hover{background:var(--btn-hover);color:var(--text-primary)}.view-tab.active{background:var(--bg-secondary);color:var(--accent-color);border-bottom:2px solid var(--accent-color)}.view-content{flex:1;display:flex;overflow:hidden;min-height:0}.canvas-container{flex:1;min-width:0;padding:0;display:flex;overflow:hidden;background:var(--bg-primary)}.three-fullscreen{flex:1;width:100%;height:100%}.app-footer{padding:10px 20px;background:var(--bg-sidebar);border-top:1px solid var(--border-color);text-align:center;font-size:12px;color:var(--text-secondary)}.sidebar-toggle{position:absolute;top:50%;left:-22px;transform:translateY(-50%);width:24px;height:48px;background:var(--bg-sidebar);border:1px solid var(--border-color);border-right:none;border-radius:6px 0 0 6px;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:10px;color:var(--text-secondary);z-index:10}.sidebar-toggle:hover{background:var(--btn-hover);color:var(--text-primary)}.sidebar-right-wrapper{position:relative;display:flex}