:root{--bg-0: #0a0e14;--bg-1: #0f141c;--bg-2: #161c26;--bg-3: #1d2531;--bg-4: #2a3442;--bg-5: #38445a;--border: #283142;--border-light: #3a4660;--text: #e6e8ec;--text-dim: #9aa3b2;--text-mute: #6b7484;--accent: #3ba3ff;--accent-2: #5cdcff;--accent-3: #8b6cff;--warn: #ffb347;--danger: #ff5d5d;--good: #6dd17c;--wire: #ff3a3a;--selection: #ffd84d;--hover: #5cdcff;--grid-minor: #1a2230;--grid-major: #243044;--canvas-bg: #0a0e14;--shadow: 0 4px 16px rgba(0, 0, 0, .5);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .7);--font-mono: ui-monospace, "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;width:100%;overflow:hidden}body{font-family:var(--font-sans);font-size:13px;color:var(--text);background:var(--bg-0);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;-webkit-user-select:none;user-select:none}button{font-family:inherit;font-size:inherit;background:transparent;border:1px solid transparent;color:var(--text);cursor:pointer;padding:4px 8px;border-radius:4px;transition:background .12s,border-color .12s}button:hover{background:var(--bg-3);border-color:var(--border-light)}button:active{background:var(--bg-4)}button:disabled{opacity:.4;cursor:not-allowed}input,select,textarea{font-family:inherit;font-size:inherit;background:var(--bg-1);border:1px solid var(--border);color:var(--text);padding:4px 8px;border-radius:4px;outline:none}input:focus,select:focus,textarea:focus{border-color:var(--accent)}input[type=color]{padding:2px;width:32px;height:24px;cursor:pointer}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:var(--bg-1)}::-webkit-scrollbar-thumb{background:var(--bg-4);border-radius:5px;border:2px solid var(--bg-1)}::-webkit-scrollbar-thumb:hover{background:var(--bg-5)}.app{display:grid;grid-template-rows:32px 88px 1fr 24px;grid-template-columns:220px 1fr 280px;grid-template-areas:"menu menu menu" "ribbon ribbon ribbon" "left main right" "status status status";height:100vh;width:100vw;background:var(--bg-0);color:var(--text)}.menu-bar{grid-area:menu;display:flex;align-items:center;padding:0 12px;background:linear-gradient(180deg,var(--bg-2) 0%,var(--bg-1) 100%);border-bottom:1px solid var(--border);gap:4px;font-size:12px}.menu-brand{font-weight:600;margin-right:16px;display:flex;align-items:center;gap:8px;letter-spacing:.3px}.menu-brand .logo{width:18px;height:18px;background:linear-gradient(135deg,var(--accent),var(--accent-3));border-radius:3px;display:inline-flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;color:#fff}.menu-item{padding:4px 10px;border-radius:3px;cursor:pointer;position:relative}.menu-item:hover{background:var(--bg-3)}.menu-spacer{flex:1}.menu-info{color:var(--text-mute);font-size:11px;font-family:var(--font-mono)}.ribbon{grid-area:ribbon;display:flex;background:var(--bg-1);border-bottom:1px solid var(--border);padding:6px 10px;gap:6px;overflow-x:auto}.ribbon-group{display:flex;flex-direction:column;align-items:center;border-right:1px solid var(--border);padding:0 10px;gap:4px;min-width:80px}.ribbon-group:last-child{border-right:none}.ribbon-group-label{font-size:10px;color:var(--text-mute);text-transform:uppercase;letter-spacing:.5px;margin-top:auto}.ribbon-buttons{display:flex;gap:2px;flex-wrap:wrap}.tool-btn{display:inline-flex;flex-direction:column;align-items:center;gap:2px;padding:6px 8px;border-radius:4px;cursor:pointer;background:transparent;border:1px solid transparent;min-width:48px;color:var(--text-dim);transition:all .12s}.tool-btn:hover{background:var(--bg-3);color:var(--text)}.tool-btn.active{background:var(--bg-4);color:var(--accent);border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent),0 0 8px #3ba3ff33}.tool-btn .icon{font-size:18px;line-height:1}.tool-btn .label{font-size:10px}.tool-btn-small{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:4px;cursor:pointer;background:transparent;border:1px solid transparent;color:var(--text-dim)}.tool-btn-small:hover{background:var(--bg-3);color:var(--text)}.tool-btn-small.active{background:var(--bg-4);color:var(--accent);border-color:var(--accent)}.left-panel{grid-area:left;background:var(--bg-1);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden}.right-panel{grid-area:right;background:var(--bg-1);border-left:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden}.main{grid-area:main;position:relative;background:var(--canvas-bg);overflow:hidden;display:flex;flex-direction:column}.status-bar{grid-area:status;background:linear-gradient(180deg,var(--bg-2) 0%,var(--bg-1) 100%);border-top:1px solid var(--border);display:flex;align-items:center;padding:0 10px;font-size:11px;font-family:var(--font-mono);color:var(--text-dim);gap:14px}.status-section{display:flex;align-items:center;gap:6px;padding:0 6px;border-right:1px solid var(--border);height:100%}.status-section:last-child{border-right:none}.status-section.active{color:var(--accent)}.status-spacer{flex:1}.panel-section{display:flex;flex-direction:column;border-bottom:1px solid var(--border);flex-shrink:0}.panel-section.flex{flex:1;overflow:hidden}.panel-header{display:flex;align-items:center;padding:6px 10px;background:var(--bg-2);font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--text-dim);border-bottom:1px solid var(--border)}.panel-header .panel-actions{margin-left:auto;display:flex;gap:2px}.panel-body{flex:1;overflow-y:auto;padding:6px 0}.layer-row{display:flex;align-items:center;padding:3px 8px;cursor:pointer;gap:4px;font-size:12px}.layer-row:hover{background:var(--bg-2)}.layer-row.active{background:var(--bg-3)}.layer-row.active:before{content:"";position:absolute;left:0;width:3px;height:100%;background:var(--accent)}.layer-color{width:14px;height:14px;border-radius:2px;border:1px solid var(--border-light);flex-shrink:0;cursor:pointer}.layer-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.layer-toggle{width:20px;height:20px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-mute)}.layer-toggle:hover{color:var(--text)}.layer-toggle.active{color:var(--accent)}.symbol-categories{display:flex;flex-wrap:wrap;gap:2px;padding:4px 6px;border-bottom:1px solid var(--border);background:var(--bg-2)}.cat-pill{font-size:10px;padding:2px 6px;border-radius:10px;background:var(--bg-3);cursor:pointer;white-space:nowrap;border:1px solid var(--border);color:var(--text-dim)}.cat-pill:hover{background:var(--bg-4);color:var(--text)}.cat-pill.active{background:var(--accent);color:#000;border-color:var(--accent)}.symbol-search{padding:6px;border-bottom:1px solid var(--border)}.symbol-search input{width:100%}.symbol-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:4px;padding:6px}.symbol-tile{background:var(--bg-2);border:1px solid var(--border);border-radius:4px;padding:6px;display:flex;flex-direction:column;align-items:center;gap:4px;cursor:grab;transition:all .12s}.symbol-tile:hover{background:var(--bg-3);border-color:var(--accent);transform:translateY(-1px);box-shadow:var(--shadow)}.symbol-tile.active{background:var(--bg-4);border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.symbol-tile-preview{width:56px;height:56px;background:var(--canvas-bg);border-radius:3px;display:flex;align-items:center;justify-content:center}.symbol-tile-name{font-size:10px;color:var(--text-dim);line-height:1.1;height:22px;display:flex;align-items:center;text-align:center;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.prop-row{display:grid;grid-template-columns:90px 1fr;gap:6px;padding:3px 10px;align-items:center}.prop-label{font-size:11px;color:var(--text-dim)}.prop-value input,.prop-value select{width:100%;font-size:12px}.sheet-tabs{display:flex;background:var(--bg-1);border-top:1px solid var(--border);padding:0 4px;height:26px;align-items:stretch;flex-shrink:0}.sheet-tab{display:flex;align-items:center;padding:0 12px;font-size:11px;cursor:pointer;color:var(--text-dim);border-right:1px solid var(--border);gap:6px}.sheet-tab:hover{background:var(--bg-2);color:var(--text)}.sheet-tab.active{background:var(--canvas-bg);color:var(--accent);border-bottom:2px solid var(--accent)}.sheet-tab .num{font-family:var(--font-mono);color:var(--text-mute);font-size:10px}.sheet-tab-add{display:inline-flex;align-items:center;justify-content:center;width:26px;cursor:pointer;color:var(--text-mute);font-size:16px}.sheet-tab-add:hover{color:var(--accent);background:var(--bg-2)}.canvas-container{flex:1;position:relative;overflow:hidden;display:flex}.canvas-2d{flex:1;display:block;cursor:crosshair}.canvas-2d.tool-pan{cursor:grab}.canvas-2d.tool-pan.panning{cursor:grabbing}.canvas-2d.tool-select{cursor:default}.canvas-3d{border-left:1px solid var(--border);background:linear-gradient(180deg,#0c1420,#1a2638);position:relative}.splitter{width:5px;flex-shrink:0;cursor:col-resize;background:var(--border);transition:background .15s;position:relative}.splitter:hover,.splitter:active{background:var(--accent)}.splitter:after{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:2px;height:30px;background:var(--text-mute);border-radius:1px;opacity:.4}.canvas-3d-overlay{position:absolute;top:8px;left:8px;font-size:10px;color:var(--text-mute);font-family:var(--font-mono);padding:4px 8px;background:#0006;border-radius:3px;pointer-events:none}.canvas-overlay{position:absolute;top:8px;left:8px;font-size:10px;color:var(--text-mute);font-family:var(--font-mono);padding:4px 8px;background:#00000080;border-radius:3px;pointer-events:none}.coord-readout{position:absolute;top:8px;right:8px;font-family:var(--font-mono);font-size:11px;color:var(--text-dim);background:#0009;padding:4px 8px;border-radius:3px;pointer-events:none;border:1px solid var(--border)}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:100}.modal{background:var(--bg-1);border:1px solid var(--border-light);border-radius:6px;box-shadow:var(--shadow-lg);min-width:400px;max-width:80vw;max-height:80vh;display:flex;flex-direction:column}.modal-header{padding:12px 16px;border-bottom:1px solid var(--border);font-weight:600;display:flex;align-items:center}.modal-header .close{margin-left:auto;cursor:pointer;color:var(--text-mute)}.modal-body{padding:16px;overflow:auto}.modal-footer{padding:12px 16px;border-top:1px solid var(--border);display:flex;gap:8px;justify-content:flex-end}.btn-primary{background:var(--accent);color:#000;border:1px solid var(--accent);padding:6px 14px;font-weight:600}.btn-primary:hover{background:var(--accent-2);border-color:var(--accent-2)}.btn-ghost{background:transparent;border:1px solid var(--border-light)}.bom-table{width:100%;border-collapse:collapse;font-size:11px}.bom-table th,.bom-table td{text-align:left;padding:4px 8px;border-bottom:1px solid var(--border)}.bom-table th{background:var(--bg-2);color:var(--text-dim);font-weight:600;text-transform:uppercase;font-size:10px;letter-spacing:.5px;position:sticky;top:0}.bom-table tr:hover{background:var(--bg-2)}.kbd{font-family:var(--font-mono);font-size:10px;background:var(--bg-3);border:1px solid var(--border);border-bottom-width:2px;padding:1px 4px;border-radius:3px;color:var(--text-dim)}.divider{border-top:1px solid var(--border);margin:4px 0}.context-menu{position:absolute;background:var(--bg-2);border:1px solid var(--border-light);border-radius:4px;box-shadow:var(--shadow-lg);z-index:50;min-width:180px;padding:4px 0}.context-menu .item{padding:6px 12px;cursor:pointer;font-size:12px;display:flex;align-items:center;gap:8px}.context-menu .item:hover{background:var(--bg-3)}.context-menu .item .key{margin-left:auto;color:var(--text-mute);font-size:10px;font-family:var(--font-mono)}.command-bar{position:absolute;bottom:8px;left:50%;transform:translate(-50%);background:#0f141ceb;border:1px solid var(--border-light);border-radius:4px;padding:4px 10px;font-family:var(--font-mono);font-size:11px;color:var(--accent);box-shadow:var(--shadow);pointer-events:none;display:flex;align-items:center;gap:8px;max-width:70%}.command-bar .prompt{color:var(--text-mute)}.mobile-fab{display:none}@media (max-width: 900px){.app{grid-template-rows:36px 60px 1fr 22px;grid-template-columns:1fr;grid-template-areas:"menu" "ribbon" "main" "status"}.menu-bar{padding:0 8px;font-size:12px}.menu-brand{margin-right:8px}.menu-info{display:none}.ribbon{padding:4px 6px;overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch}.ribbon-group{padding:0 6px;min-width:auto}.ribbon-group-label{display:none}.tool-btn{padding:4px 6px;min-width:38px}.tool-btn .label{font-size:9px}.tool-btn .icon svg{width:18px;height:18px}.left-panel,.right-panel{position:fixed;top:96px;bottom:22px;width:min(86vw,320px);z-index:40;box-shadow:var(--shadow-lg);transition:transform .22s ease;border-left:1px solid var(--border);border-right:1px solid var(--border)}.left-panel{left:0;transform:translate(-105%)}.right-panel{right:0;transform:translate(105%)}.left-panel.open,.right-panel.open{transform:translate(0)}.drawer-backdrop{position:fixed;top:96px;right:0;bottom:22px;left:0;background:#0006;z-index:35;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.canvas-3d{width:100%!important;border-left:none;border-top:1px solid var(--border)}.splitter{display:none}.main>div:first-child{flex-direction:column!important}.mobile-fab{display:flex;position:fixed;z-index:30;width:44px;height:44px;border-radius:50%;align-items:center;justify-content:center;background:var(--bg-3);border:1px solid var(--border-light);box-shadow:var(--shadow);color:var(--text);cursor:pointer;font-size:20px}.mobile-fab:active{background:var(--bg-4);transform:scale(.95)}.mobile-fab.fab-left{left:10px;bottom:38px}.mobile-fab.fab-right{right:10px;bottom:38px}.mobile-fab.fab-zoomin{right:10px;bottom:92px}.mobile-fab.fab-zoomout{right:10px;bottom:144px}.mobile-fab.fab-fit{right:10px;bottom:196px}.status-bar{font-size:10px;gap:6px;overflow-x:auto;white-space:nowrap}.status-section{padding:0 4px;flex-shrink:0}.coord-readout,.canvas-overlay{font-size:9px;padding:3px 6px}.sheet-tabs{overflow-x:auto;-webkit-overflow-scrolling:touch}.sheet-tab{flex-shrink:0;padding:0 10px;font-size:10px}.symbol-grid{grid-template-columns:repeat(3,1fr);gap:3px;padding:4px}.symbol-tile-preview{width:44px;height:44px}.symbol-tile-name{font-size:9px;height:18px}.modal{min-width:90vw!important;max-width:96vw!important}}@media (max-width: 420px){.menu-item{padding:4px 6px;font-size:11px}.tool-btn{min-width:34px}.tool-btn .label{display:none}.symbol-grid{grid-template-columns:repeat(2,1fr)}}