:root{--ink:#131b21;--muted:#57676f;--line:#c2ced4;--paper:#eef2f4;--surface:#fff;--surface-2:#e7edf0;--canvas-bg:#e7edf0;--accent:#175a8a;--accent-soft:#dbe9f2;--accent-ink:#0f4267;--ok:#2f7d4f;--warn:#9a5b00;--bad:#b3261e;--hvac:#3f7cc9;--plumb:#2f9e8f;--elec:#c98a1d;--fire:#c0432f;--other:#7c5cbf;--font-display:"Big Shoulders Display", sans-serif;--font-ui:"Chivo", sans-serif;--font-mono:"Martian Mono", monospace;--font-hand:"Architects Daughter", cursive}.mep-app{height:100%;font-family:var(--font-ui);color:var(--ink);background:var(--paper);flex-direction:column;display:flex;position:relative}.mep-header{background:var(--surface);border:2px solid var(--ink);border-bottom:2px solid var(--ink);flex:none;align-items:center;gap:10px;height:40px;padding:0 14px;display:flex;position:relative}.mep-header .mep-fill{flex:1}.mep-header .mep-title{font-size:12.5px;font-family:var(--font-mono);letter-spacing:.01em;color:var(--ink);opacity:.85;text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.mep-room-tools{border:1.5px solid var(--ink);border-radius:2px;display:flex;overflow:hidden}.mep-room-tools button{color:var(--muted);background:0 0;border:none;align-items:center;gap:5px;padding:4px 10px;font-size:11px;display:flex}.mep-room-tools button+button{border-left:1.5px solid var(--ink)}.mep-room-tools button.on{background:var(--accent);color:#fff}.mep-header-status{color:var(--muted);white-space:nowrap;text-overflow:ellipsis;max-width:40ch;font-size:11px;overflow:hidden}.mep-header-sheet{color:var(--ink);white-space:nowrap;text-overflow:ellipsis;max-width:60ch;font-size:11px;overflow:hidden}.mep-menu{flex:none;position:relative}.mep-menu-btn{border:1.5px solid var(--ink);background:var(--surface);color:var(--ink);font-family:var(--font-ui);border-radius:3px;align-items:center;gap:6px;padding:6px 10px;font-size:11.5px;font-weight:700;display:inline-flex}.mep-menu-dropdown{background:var(--surface);border:2px solid var(--ink);min-width:200px;box-shadow:3px 3px 0 var(--ink);z-index:50;border-radius:4px;flex-direction:column;padding:5px;display:flex;position:absolute;top:calc(100% + 6px);left:0}.mep-menu-item{color:var(--ink);font-family:var(--font-ui);text-align:left;background:0 0;border:none;border-radius:3px;align-items:center;gap:8px;padding:8px 10px;font-size:12px;font-weight:600;display:flex;position:relative;overflow:hidden}.mep-menu-item:hover:not(:disabled){background:var(--surface-2)}.mep-menu-item:disabled{color:var(--muted);opacity:.5}.mep-menu-item input[type=file]{opacity:0;cursor:pointer;position:absolute;inset:0}.mep-menu-divider{background:var(--line);height:1px;margin:4px 2px}.mep-doc-switcher{align-items:center;gap:6px;min-width:0;display:flex;position:relative}.mep-doc-switcher-btn{border:1.5px solid var(--ink);background:var(--surface);color:var(--ink);font-family:var(--font-ui);border-radius:3px;flex:none;align-items:center;gap:3px;padding:3px 6px;font-size:10.5px;font-weight:700;display:inline-flex}.mep-doc-switcher-btn:hover{background:var(--surface-2)}.mep-doc-switcher-dropdown{background:var(--surface);border:2px solid var(--ink);min-width:240px;max-height:320px;box-shadow:3px 3px 0 var(--ink);z-index:50;border-radius:4px;flex-direction:column;display:flex;position:absolute;top:calc(100% + 6px);left:0;overflow-y:auto}.mep-icon-btn{border:1.5px solid var(--line);background:var(--surface);color:var(--ink);font-family:var(--font-ui);white-space:nowrap;border-radius:3px;align-items:center;gap:6px;padding:5px 9px;font-size:11.5px;font-weight:600;display:inline-flex}.mep-icon-btn:hover:not(:disabled){border-color:var(--ink)}.mep-icon-btn:disabled{color:var(--muted);opacity:.5;cursor:default}.mep-file-btn{position:relative;overflow:hidden}.mep-file-btn input[type=file]{opacity:0;cursor:pointer;position:absolute;inset:0}.mep-flow-result{color:var(--muted);font-size:11.5px;font-family:var(--font-mono)}.mep-sheet-chip{background:var(--surface-2);border:1.5px solid var(--ink);font-size:12.5px;font-weight:600;font-family:var(--font-display);text-transform:uppercase;letter-spacing:.03em;color:var(--ink);text-overflow:ellipsis;white-space:nowrap;border-radius:2px;align-items:center;gap:7px;max-width:42ch;padding:8px 13px;display:flex;overflow:hidden}.mep-discipline{gap:8px;display:flex}.mep-discipline-btn{color:var(--muted);background:var(--surface);border:1.5px solid var(--ink);font-size:12.5px;font-weight:700;font-family:var(--font-display);text-transform:uppercase;letter-spacing:.03em;border-radius:3px;align-items:center;gap:6px;padding:7px 13px;display:flex}.mep-discipline-btn.on{background:var(--accent);color:#fff;border-color:var(--accent-ink);box-shadow:2px 2px #0f426759}.mep-stamps-filter{padding:10px 10px 0}.mep-stamps-filter .mep-discipline{flex-wrap:nowrap;gap:6px;padding-bottom:2px;overflow-x:auto}.mep-stamps-filter .mep-discipline-btn{white-space:nowrap;flex:none;padding:5px 9px;font-size:11px}.mep-stamps-filter-row2{flex-wrap:wrap;align-items:center;gap:8px;margin-top:6px;display:flex}.mep-toggle-btn{color:var(--ink);background:var(--surface-2);border:1.5px dashed var(--muted);font-size:11px;font-weight:700;font-family:var(--font-display);text-transform:uppercase;letter-spacing:.03em;cursor:pointer;border-radius:999px;align-items:center;gap:6px;padding:5px 11px;display:flex}.mep-toggle-btn:hover{border-color:var(--ink);border-style:solid}.mep-stamp-search{min-width:70px;font-size:11px;font-family:var(--font-ui);color:var(--ink);background:var(--surface);border:1.5px solid var(--line);border-radius:999px;flex:90px;padding:5px 9px}.mep-stamp-search:focus{border-color:var(--accent);outline:none}.mep-stamp-search::placeholder{color:var(--muted)}.mep-body{border-left:2px solid var(--ink);border-right:2px solid var(--ink);flex:1;min-height:0;display:flex;position:relative}.mep-canvas-wrap{background:var(--canvas-bg);flex:1;position:relative;overflow:hidden}.mep-canvas-init{color:var(--muted);font-size:12px;position:absolute;top:12px;left:12px}.mep-rail{z-index:9;background:var(--surface);border-right:2px solid var(--ink);flex-direction:column;align-items:center;gap:3px;width:44px;padding:8px 0;display:flex;position:absolute;top:0;bottom:0;left:0}.mep-rail-row{position:relative}.mep-rail-row-main{flex-direction:column;align-items:center;display:flex}.mep-rail-btn{width:32px;height:32px;color:var(--ink);background:0 0;border:none;border-radius:2px;justify-content:center;align-items:center;display:flex}.mep-rail-btn:hover:not(:disabled){background:var(--surface-2)}.mep-rail-btn.active{background:var(--accent);color:#fff;box-shadow:1.5px 1.5px 0 var(--accent-ink)}.mep-rail-btn:disabled{opacity:.35}.mep-rail-chev{width:32px;height:12px;color:var(--muted);background:0 0;border:none;justify-content:center;align-items:center;display:flex;transform:rotate(90deg)}.mep-rail-chev.open{color:var(--accent);transform:rotate(-90deg)}.mep-rail-divider{background:var(--line);width:24px;height:1px;margin:4px 0}.mep-rail-flyout{background:var(--surface);border:2px solid var(--ink);min-width:150px;box-shadow:3px 3px 0 var(--ink);z-index:20;border-radius:4px;flex-direction:column;padding:4px;display:flex;position:absolute;top:0;left:calc(100% + 6px)}.mep-rail-flyout-btn{color:var(--ink);font-family:var(--font-ui);text-align:left;white-space:nowrap;background:0 0;border:none;border-radius:3px;align-items:center;gap:8px;padding:6px 8px;font-size:11.5px;font-weight:600;display:flex}.mep-rail-flyout-btn:hover:not(:disabled){background:var(--surface-2)}.mep-rail-flyout-btn.on{background:var(--surface-2);color:var(--accent);box-shadow:inset 3px 0 0 var(--accent)}.mep-rail-flyout-btn:disabled{color:var(--muted);opacity:.5}.mep-resize-handle{cursor:col-resize;border-left:2px dashed var(--ink);flex:none;justify-content:center;align-items:center;width:10px;display:flex}.mep-resize-handle .nub{background:var(--line);border-radius:999px;width:5px;height:44px}.mep-dock{background:var(--surface);border-left:2px solid var(--ink);flex-direction:column;flex:none;display:flex}.mep-dock-edge-tab{writing-mode:vertical-rl;border:1.5px solid var(--ink);background:var(--surface-2);font-family:var(--font-display);text-transform:uppercase;letter-spacing:.03em;color:var(--ink);border-right:none;padding:10px 6px;font-size:11px}.mep-dock-header{border-bottom:2px solid var(--ink);align-items:center;gap:4px;padding:8px 10px 0;display:flex}.mep-dock-header .mep-fill{flex:1}.mep-dock-tab{color:var(--muted);background:var(--surface-2);border:1.5px solid var(--ink);border-bottom:none;border-radius:5px 5px 0 0;align-items:center;gap:2px;padding:0 4px 0 11px;font-size:11px;font-weight:600;display:flex}.mep-dock-tab.on{color:var(--ink);background:var(--surface);z-index:2;position:relative;transform:translateY(2px)}.mep-dock-tab-label{color:inherit;font:inherit;font-family:var(--font-display);text-transform:uppercase;letter-spacing:.02em;background:0 0;border:none;padding:7px 0}.mep-dock-tab-close{color:inherit;opacity:.55;background:0 0;border:none;border-radius:2px;justify-content:center;align-items:center;width:16px;height:16px;display:flex}.mep-dock-tab-close:hover{background:var(--surface);opacity:1}.mep-dock-body{flex:1;min-height:0;padding:10px;overflow:auto}.mep-dock-menu-dropdown{left:auto;right:0}.mep-dock-mode-btn{border:1.5px solid var(--ink);width:22px;height:22px;color:var(--muted);background:0 0;border-radius:2px;flex:none;justify-content:center;align-items:center;display:flex}.mep-dock-mode-btn:hover{background:var(--surface-2);color:var(--ink)}.mep-elem-row{border-bottom:2px solid var(--ink);align-items:center;gap:9px;padding:10px 14px;display:flex}.mep-elem-row b{font-size:13px;font-weight:600;display:block}.mep-elem-row span{color:var(--muted);font-size:10.5px}.mep-elem-row.selectable{cursor:pointer}.mep-elem-row.selectable:hover{background:var(--surface-2)}.mep-elem-row .swatch{border:1px solid var(--ink);flex:none;width:10px;height:10px}.mep-elem-row.active{background:var(--accent-soft)}.mep-doc-dirty-dot{background:var(--fire);border-radius:50%;flex:none;width:7px;height:7px}.mep-doc-close{color:var(--muted);cursor:pointer;background:0 0;border:none;flex:none;padding:2px 4px;font-size:16px;line-height:1}.mep-doc-close:hover{color:var(--ink)}.mep-field-note{font-family:var(--font-hand);color:var(--muted);margin-left:6px;font-size:12px;transform:rotate(-3deg)}.mep-section{border-bottom:1px solid var(--line);padding:11px 14px}.mep-section h4{letter-spacing:.06em;color:var(--muted);font-size:10px;font-weight:600;font-family:var(--font-display);text-transform:uppercase;border-bottom:1px solid var(--line);margin:0 0 9px;padding-bottom:4px}.mep-field-row{justify-content:space-between;align-items:center;gap:10px;margin-bottom:8px;display:flex}.mep-field-row:last-child{margin-bottom:0}.mep-field-row label{color:var(--muted);font-size:9.5px;font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.02em}.mep-field-row input{width:104px;font-size:11.5px;font-family:var(--font-mono);color:var(--ink);text-align:right;border:none;border-bottom:1.5px dotted var(--ink);background:0 0;font-weight:600}.mep-field-row input:disabled{color:var(--muted);opacity:.6;border-bottom-style:dotted}.mep-field-row input.mep-field-inherited{color:var(--muted);border-bottom-style:dashed;font-style:italic}.mep-inherit-reset{color:var(--muted);cursor:pointer;background:0 0;border:none;flex:none;padding:0 0 0 4px;font-size:11px}.mep-inherit-reset:hover{color:var(--accent)}.mep-rotate-nudge{align-items:center;gap:4px;display:flex}.mep-rotate-nudge input{width:64px}.mep-rotate-nudge button{color:var(--muted);cursor:pointer;background:0 0;border:none;padding:2px;display:flex}.mep-rotate-nudge button:hover{color:var(--ink)}.mep-rotate-nudge button.flip{transform:scaleX(-1)}.mep-color-picker{position:relative}.mep-color-picker-swatch{border:1.5px solid var(--ink);cursor:pointer;background:var(--surface);border-radius:2px;justify-content:center;align-items:center;width:28px;height:20px;padding:0;display:flex}.mep-color-picker-varies{color:var(--muted);font-size:10px;font-weight:700}.mep-color-picker-popover{background:var(--surface);border:2px solid var(--ink);min-width:180px;box-shadow:3px 3px 0 var(--ink);z-index:60;border-radius:4px;padding:10px;position:absolute;top:calc(100% + 6px);right:0}.mep-color-picker-label{color:var(--muted);font-size:9.5px;font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.02em;margin-bottom:5px}.mep-color-picker-label:not(:first-child){margin-top:8px}.mep-color-picker-grid{grid-template-columns:repeat(5,1fr);gap:4px;display:grid}.mep-color-picker-swatch-sm{border:1.5px solid var(--ink);cursor:pointer;border-radius:2px;width:22px;height:22px;padding:0}.mep-color-picker-swatch-sm:hover{outline:2px solid var(--accent);outline-offset:1px}.mep-color-picker-custom{border-top:1px solid var(--line);justify-content:space-between;align-items:center;gap:8px;margin-top:10px;padding-top:8px;display:flex}.mep-color-picker-custom label{color:var(--muted);font-size:9.5px;font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.02em}.mep-color-picker-custom input[type=color]{border:1.5px solid var(--ink);cursor:pointer;border-radius:2px;width:36px;height:20px;padding:0}.mep-seg2{border:1.5px solid var(--ink);border-radius:2px;width:104px;display:flex;overflow:hidden}.mep-seg2 button{color:var(--muted);background:0 0;border:none;flex:1;padding:5px 0;font-size:10.5px}.mep-seg2 button.on{background:var(--accent);color:#fff}.mep-empty-panel{color:var(--muted);padding:20px 14px;font-size:12px}.mep-hint{color:var(--muted);margin:0 0 8px;font-size:11px;line-height:1.4}.mep-routing-field{align-items:center;gap:6px;min-width:0;display:flex}.mep-routing-field select{max-width:150px}.mep-routing-swatch{border-top:3px solid var(--ink);flex:none;width:18px;height:0}.mep-routing-swatch.none{border-top:1.5px dotted var(--muted)}.mep-field-row input.mep-routing-segment{width:170px}.mep-routing-check{align-items:center;gap:8px;margin:4px 0 8px;display:flex}.mep-checkbox-row{color:var(--ink);cursor:pointer;align-items:center;gap:8px;margin-bottom:6px;font-size:11.5px;display:flex}.mep-checkbox-row:last-child{margin-bottom:0}.mep-stamp-grid{grid-template-columns:repeat(2,1fr);gap:8px;padding:10px;display:grid}.mep-stamp-tile{border:1.5px solid var(--line);background:var(--surface);color:var(--ink);text-align:center;border-radius:3px;flex-direction:column;align-items:center;gap:6px;padding:10px 6px;font-size:10.5px;font-weight:600;display:flex}.mep-stamp-tile:hover{border-color:var(--ink)}.mep-stamp-tile.active{border-color:var(--accent);background:var(--accent-soft);box-shadow:2px 2px 0 var(--accent)}.mep-stamp-tile img{object-fit:contain;width:36px;height:36px}.mep-stamp-tile-wrap{position:relative}.mep-stamp-tile-wrap .mep-stamp-tile{width:100%}.mep-stamp-tile-duplicate{border:1.5px solid var(--line);background:var(--surface);width:18px;height:18px;color:var(--muted);cursor:pointer;border-radius:50%;justify-content:center;align-items:center;padding:0;display:flex;position:absolute;top:4px;right:4px}.mep-stamp-tile-duplicate:hover{border-color:var(--ink);color:var(--ink)}.mep-stamp-tile-delete{border:1.5px solid var(--line);background:var(--surface);width:18px;height:18px;color:var(--muted);cursor:pointer;border-radius:50%;justify-content:center;align-items:center;padding:0;display:flex;position:absolute;top:4px;right:24px}.mep-stamp-tile-delete:hover{border-color:var(--ink);color:var(--ink)}.mep-stamps-subtabs{gap:4px;padding:10px 10px 0;display:flex}.mep-stamps-subtab-btn{color:var(--muted);background:var(--surface-2);border:1.5px solid var(--ink);font-size:10.5px;font-weight:700;font-family:var(--font-display);text-transform:uppercase;letter-spacing:.02em;border-radius:3px;flex:1;padding:6px 8px}.mep-stamps-subtab-btn.on{background:var(--accent);color:#fff;border-color:var(--accent-ink);box-shadow:2px 2px #0f426759}.mep-networktype-grid{grid-template-columns:repeat(2,1fr);gap:8px;padding:10px;display:grid}.mep-networktype-tile{border:1.5px solid var(--line);border-left:3px solid var(--line);background:var(--surface);border-radius:3px;align-items:center;display:flex;position:relative}.mep-networktype-tile.mep-discipline-hvac{border-left-color:var(--hvac)}.mep-networktype-tile.mep-discipline-plumbing{border-left-color:var(--plumb)}.mep-networktype-tile.mep-discipline-electrical{border-left-color:var(--elec)}.mep-networktype-tile.mep-discipline-fire{border-left-color:var(--fire)}.mep-networktype-tile.mep-discipline-other{border-left-color:var(--other)}.mep-networktype-tile.active{border-color:var(--accent);background:var(--accent-soft);box-shadow:2px 2px 0 var(--accent)}.mep-networktype-pick{text-align:left;background:0 0;border:none;flex-direction:column;flex:1;align-items:flex-start;gap:1px;min-width:0;padding:8px;display:flex}.mep-networktype-name{color:var(--ink);text-overflow:ellipsis;white-space:nowrap;max-width:100%;font-size:11px;font-weight:600;overflow:hidden}.mep-networktype-units{font-size:9.5px;font-family:var(--font-mono);color:var(--muted)}.mep-networktype-visuals{border:1.5px solid var(--line);cursor:pointer;border-radius:50%;flex:none;width:14px;height:14px;margin-right:2px;padding:0}.mep-networktype-visuals:hover{border-color:var(--ink)}.mep-net-tree{padding:6px 0}.mep-net-tree-row{box-sizing:border-box;text-align:left;width:100%;color:var(--ink);background:0 0;border:none;border-radius:2px;align-items:center;gap:6px;padding:5px 10px;display:flex}.mep-net-tree-row-discipline{font-family:var(--font-display);letter-spacing:.05em;text-transform:uppercase;color:var(--muted);font-size:10px;font-weight:600}.mep-net-tree-row-network{padding-left:20px}.mep-net-tree-toggle{color:var(--muted);background:0 0;border:none;flex:none;justify-content:center;align-items:center;padding:0;display:flex}.mep-net-tree-row-element{padding-left:40px;font-size:11.5px}.mep-net-tree-row-element.on{background:var(--accent-soft);color:var(--accent)}.mep-net-tree-row-element:hover{background:var(--surface-2)}.mep-net-tree-label{text-overflow:ellipsis;white-space:nowrap;font-size:11.5px;overflow:hidden}.mep-net-tree-count{font-size:9.5px;font-family:var(--font-mono);color:var(--muted)}.mep-net-tree-children{flex-direction:column;display:flex}.mep-net-tree-empty{color:var(--muted);padding:4px 10px 4px 40px;font-size:11px}.mep-net-tree-row-panel{padding-left:30px}.mep-net-tree-row-panel 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