:root{--bg:#0b1320;--sidebar:#121f32;--line:#2d4056;--ink:#e7f1ff;--muted:#a6b9ce;--accent:#62d6f6}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:14px Prompt,system-ui,sans-serif}button,input,select{font:inherit}button{background:#1b3048;border:1px solid #38516c;color:var(--ink);padding:8px 12px;border-radius:9px;cursor:pointer}button:hover{background:#294663}button.active{background:#176184;border-color:#6ddcff}button:focus-visible,input:focus-visible{outline:2px solid #62d6f6;outline-offset:2px}.app{height:100dvh;display:grid;grid-template-rows:auto 1fr auto}.top{display:flex;align-items:center;gap:9px;padding:10px 14px;border-bottom:1px solid var(--line);flex-wrap:wrap}.brand{font-size:18px;font-weight:700;margin-right:16px;white-space:nowrap}.brand span{color:var(--accent)}.top input{max-width:190px;background:#101e31;color:white;border:1px solid var(--line);padding:9px;border-radius:8px}.spacer{flex:1}.layout{display:grid;grid-template-columns:220px 1fr 240px;min-height:0}.panel{background:var(--sidebar);padding:16px;border-right:1px solid var(--line);overflow:auto}.right{border-right:0;border-left:1px solid var(--line)}h3{font-size:13px;color:#91bcd2;text-transform:uppercase;letter-spacing:.07em;margin:6px 0 15px}.tool{width:100%;text-align:left;display:flex;align-items:center;gap:10px;margin:0 0 9px;padding:11px}.tool em{font-style:normal;font-size:19px;width:27px;color:#8de0fa}.tool small{font-size:11px;color:var(--muted);display:block}.work{position:relative;overflow:hidden;background:#f3f8fe}.workspace{width:100%;height:100%;display:block;touch-action:none;cursor:default}.work.mode-connect .workspace{cursor:crosshair}.field{display:block;margin-bottom:15px;color:#a9bfd7;font-size:12px}.field input,.field select{width:100%;display:block;margin-top:6px;border:1px solid #3e5973;border-radius:8px;padding:9px;color:white;background:#0a1a2c}.tip{padding:12px;border:1px solid #2a485f;border-radius:10px;background:#152b3d;color:#bcd3e8;line-height:1.7;font-size:12px}.bottom{background:#101d2e;border-top:1px solid var(--line);padding:6px 16px;font-size:11px;color:var(--muted);display:flex;justify-content:space-between}.mobile-btn{display:none}.node{cursor:move}.node.selected .shape{stroke:#ff9b32!important;stroke-width:3.2}.node text{pointer-events:none;user-select:none}.connector{pointer-events:stroke;cursor:pointer}.connector.selected{stroke:#ff8f3a}.hide{display:none!important}@media(max-width:1000px){.layout{grid-template-columns:170px 1fr}.right{display:none}.panel{padding:10px}.brand{font-size:16px}}@media(max-width:650px){.app{height:100dvh}.top{gap:6px;padding:7px}.top button{font-size:11px;padding:7px}.top input{max-width:105px}.layout{grid-template-columns:1fr}.left{display:none}.left.open{display:block;position:absolute;top:92px;bottom:25px;left:0;width:220px;z-index:2;box-shadow:15px 0 30px #1118}.mobile-btn{display:block}.brand{margin-right:2px}.bottom{font-size:10px}}


/* Drag & drop palette feedback */
.tool[data-add]{cursor:grab;touch-action:none;user-select:none;-webkit-user-select:none}
.tool[data-add]:active{cursor:grabbing}
.palette-ghost{display:none;position:fixed;left:0;top:0;transform:translate(14px,14px);z-index:9999;pointer-events:none;padding:12px 18px;border-radius:9px;background:#173959;color:#fff;border:2px dashed #74ccf3;box-shadow:0 12px 30px #0005;font-weight:600;white-space:nowrap}
.palette-ghost.visible{display:block}.palette-ghost.valid{background:#11638a;border-color:#6fe8bc}.palette-ghost.invalid{opacity:.72}
.work.drop-ready{outline:3px inset #3db8de;outline-offset:-3px}
.drop-hint{display:none;position:absolute;z-index:3;pointer-events:none;transform:translate(14px,-30px);background:#087e9a;color:white;padding:6px 10px;border-radius:7px;font-size:12px;white-space:nowrap}.drop-hint.visible{display:block}

/* v1.2: pointer-aware palette preview, resize handles and connector ports */
.palette-ghost{display:none;align-items:center;gap:9px;min-width:120px;padding:8px 14px;background:#f6fcff;color:#103451;border:2px solid #18a1dd;box-shadow:0 10px 28px #0005;font-size:13px}
.palette-ghost.visible{display:flex}.palette-ghost.valid{background:#e2fff8;border-color:#15a48b}.palette-ghost.invalid{opacity:.65}
.ghost-symbol{display:grid;place-items:center;width:38px;height:34px;border:2px solid #448ec5;background:#dff2ff;color:#156caa;border-radius:4px;font-size:22px;font-weight:700}
.ghost-usecase{border-radius:50%}.ghost-decision{transform:rotate(45deg);width:27px;height:27px;margin:4px 7px}.ghost-decision::first-letter{transform:rotate(-45deg)}
.ghost-start,.ghost-end{border-radius:50%;width:32px;height:32px}.ghost-actor{background:transparent;border:0;font-size:31px}.ghost-note{background:#fff6cf}
.node{cursor:grab}.node:active{cursor:grabbing}.work.mode-connect .node{cursor:crosshair}
.resize-handle{cursor:nwse-resize;touch-action:none}.resize-handle[data-handle="n"],.resize-handle[data-handle="s"]{cursor:ns-resize}.resize-handle[data-handle="e"],.resize-handle[data-handle="w"]{cursor:ew-resize}.resize-handle[data-handle="ne"],.resize-handle[data-handle="sw"]{cursor:nesw-resize}
.port{cursor:crosshair;touch-action:none}.port:hover circle{fill:#bbfff4;stroke-width:3}.resize-handle:hover{fill:#c3eaff;stroke-width:3}

/* v1.3 drag-preview reliability: always above the editor panels */
body.palette-dragging,body.palette-dragging *{cursor:grabbing!important}
.palette-ghost{position:fixed!important;display:none!important;z-index:2147483647!important;pointer-events:none!important;transform:translate(18px,18px);visibility:visible!important;opacity:1;min-width:155px;min-height:52px;align-items:center;gap:12px;border-radius:11px;background:#e6f6ff!important;border:2px solid #1588cf!important;color:#11344f!important;box-shadow:0 14px 38px #0006!important}
.palette-ghost.visible{display:flex!important}
.palette-ghost.valid{background:#d8fff4!important;border-color:#0a9a79!important}
.palette-ghost.invalid{opacity:.85}
.palette-ghost .ghost-symbol{flex:none;min-width:40px;height:38px;font-size:25px}
.tool[data-add],.tool[data-add] *{touch-action:none;-webkit-user-drag:none;user-select:none;-webkit-user-select:none}

/* v1.4 UP process navigator */
.left{scroll-behavior:smooth}.up-brand{padding:1px 0 10px}.up-label{font-size:9px;letter-spacing:1.3px;color:#68d5ee;font-weight:700}.up-brand h3{margin:6px 0;color:#e8f7ff;font-size:17px}.up-brand p{font-size:11px;line-height:1.6;color:#a6bbcf;margin:0}.up-legend{display:flex;gap:9px;flex-wrap:wrap;font-size:10px;color:#bad0df;margin:5px 0 14px}.up-dot{display:inline-block;width:7px;height:7px;border-radius:50%;margin-right:4px}.up-dot.ready{background:#31caa6}.up-dot.future{background:#8a94a3}.up-jump{display:grid;grid-template-columns:1fr 1fr;gap:5px;margin-bottom:14px}.up-jump a{text-decoration:none;text-align:center;color:#baddf9;background:#1a3049;border:1px solid #375474;border-radius:7px;font-size:10px;padding:8px 2px}.up-jump a:hover{background:#275079;color:white}.up-phase{border:1px solid #36516b;border-radius:10px;margin-bottom:10px;background:#14253b;overflow:hidden;scroll-margin-top:12px}.up-phase>summary{display:flex;align-items:center;gap:9px;padding:12px 9px;cursor:pointer;list-style:none;user-select:none}.up-phase>summary::-webkit-details-marker{display:none}.up-phase>summary:after{content:'⌄';margin-left:auto;color:#83cfe9}.up-phase[open]>summary:after{content:'⌃'}.up-phase>summary strong{display:block;font-size:12px;color:#f0f8ff}.up-phase>summary small{display:block;font-size:10px;color:#a9c0d5;margin-top:3px;line-height:1.4}.up-num{display:grid;place-items:center;flex:none;width:29px;height:29px;background:#1d5276;border-radius:8px;font-size:11px;font-weight:700;color:#aff1ff}.up-phase-body{border-top:1px solid #30465e;padding:9px}.up-diagram{background:#192e46;border:1px solid #35516c;border-radius:9px;padding:9px;margin:0 0 9px}.up-diagram-head{display:flex;align-items:center;justify-content:space-between;gap:3px}.up-diagram-head b{font-size:11px;color:#e5f5ff}.up-state{font-size:9px;white-space:nowrap;color:#72e0c2}.up-diagram p{font-size:10px;line-height:1.6;color:#b5c9db;margin:6px 0 8px}.up-tools{display:grid;gap:6px}.up-tools .tool{display:flex;align-items:center;gap:8px;text-align:left;width:100%;padding:9px 7px!important;margin:0!important;font-size:11px}.up-tools .tool em{font-size:17px;flex:none;width:21px}.up-tools .tool span{font-size:11px}.up-tools .tool small{font-size:9px;margin-top:3px}.up-example{width:100%;font-size:10px;margin-top:8px;border:1px solid #3e7195;border-radius:7px;background:#1c4a67;color:#dff4ff;padding:7px;cursor:pointer}.up-example:hover{background:#28688b}.up-future{padding:8px;border:1px dashed #46607a;border-radius:7px;color:#aabed0;font-size:10px;line-height:1.6}.up-guide{border-left:3px solid #36b9d9;padding:8px 10px;background:#142b43;border-radius:5px;color:#e1f4ff;font-size:11px}.up-guide p{color:#bdd0df;font-size:10px;line-height:1.6;margin:5px 0 0}.up-help{margin-top:12px;line-height:1.7}

/* v1.5 workspace & professional inspector */
.layout{grid-template-columns:minmax(280px,320px) minmax(0,1fr) minmax(265px,298px)}
.left{border-right:1px solid #314962}.left .up-brand h3{font-size:18px;letter-spacing:.015em;margin:5px 0;color:#eef8ff}.left .up-phase{border-radius:12px;overflow:hidden}.left .up-phase summary{transition:background .2s}.left .up-phase summary:hover{background:#27415c}
.up-note{font-size:10px;letter-spacing:.11em;color:#8ba7c7;font-weight:700;display:flex;justify-content:space-between;margin:14px 0 8px}.up-note span{color:#65cbe9}
.up-uml-reference{background:#132b43;padding:13px;border:1px solid #335474;border-radius:12px;margin:14px 0;color:#c7dded;line-height:1.65;font-size:11px}.up-uml-reference strong{font-size:12px;color:#a0e8ff}.up-uml-reference p{margin:7px 0}.up-uml-reference small{color:#90adc6}
.work{overflow:auto!important;min-width:0;min-height:0;overscroll-behavior:contain;scrollbar-color:#8bb4d0 #dce9f5;scrollbar-width:auto}
.work .workspace{width:2400px;height:1600px;max-width:none;max-height:none;display:block;flex-shrink:0;touch-action:none}
.work::-webkit-scrollbar{width:15px;height:15px}.work::-webkit-scrollbar-track{background:#dfeaf5}.work::-webkit-scrollbar-thumb{background:#91b0c9;border:3px solid #dfeaf5;border-radius:12px}
.canvas-scroll-hint{position:sticky;top:9px;left:12px;display:table;width:max-content;z-index:1;pointer-events:none;margin-bottom:-30px;padding:5px 11px;background:#ffffffed;color:#486683;border:1px solid #cfdeec;border-radius:20px;font-size:11px;box-shadow:0 2px 8px #2342}
.right{padding:18px 16px!important}.inspector-heading{display:flex;gap:11px;align-items:center;padding:3px 0 8px}.inspector-heading h3{font-size:17px;margin:0;color:#f0f8ff;letter-spacing:0;text-transform:none}.inspector-heading small{color:#7db9db;font-size:10px;letter-spacing:.1em}.inspector-mark{background:#1d5776;color:#adf0ff;font-size:19px;border-radius:12px;padding:8px 12px}.inspector-sub{color:#93abc1;font-size:11px;margin-bottom:18px;line-height:1.7}.inspector-section{display:flex;align-items:center;gap:8px;margin:20px 0 12px;color:#81c9e5;font-weight:700;font-size:11px;letter-spacing:.06em}.inspector-section:after{content:'';height:1px;flex:1;background:#304b64}.object-kind{display:inline-flex;padding:6px 10px;border:1px solid #42708a;background:#1c354c;color:#a9e8ff;border-radius:20px;font-size:11px;margin-bottom:12px}.right .field{margin-bottom:13px;font-size:12px;font-weight:500}.right input:not([type=color]),.right textarea,.right select{background:#0b1b2d!important;color:#f3f8ff!important;border:1px solid #405a75!important;border-radius:9px!important;padding:10px!important;min-width:0}.right input:focus,.right textarea:focus,.right select:focus{border-color:#6cd4f5!important;box-shadow:0 0 0 2px #3cb8da38}.right textarea{resize:vertical;line-height:1.55}.right input[type=color]{height:40px;cursor:pointer}.dimension-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:9px}.dimension-row .field{min-width:0}.dimension-row input{width:100%!important}.size-hint{font-size:11px;color:#9ab6ce;line-height:1.5;margin:-2px 0 14px}.danger-action{width:100%;color:#ffc4c4;background:#39263a;border:1px solid #834956;margin-top:8px}.danger-action:hover{background:#583044}.inspector-help{margin-top:22px}
@media(max-width:1200px){.layout{grid-template-columns:265px minmax(0,1fr) 262px}}
@media(max-width:850px){.layout{grid-template-columns:230px minmax(0,1fr)}.right{display:none}}
@media(max-width:650px){.layout{grid-template-columns:minmax(0,1fr)}.left.open{width:min(86vw,310px);z-index:6}}

/* v1.6 Professional Workspace */
.layout{grid-template-columns:var(--left-size,330px) 7px minmax(0,1fr) 290px!important}
.sidebar-resizer{background:#163049;cursor:col-resize;border-left:1px solid #2d5368;border-right:1px solid #2d5368;position:relative;z-index:2}
.sidebar-resizer:hover,.sidebar-resizer:focus{background:#27bbdc;outline:0}
.diagram-selector{padding:12px;margin:12px 0;background:#132d43;border:1px solid #365c75;border-radius:12px;color:#d9f3ff}
.diagram-selector label{display:block;font-weight:700;font-size:12px;margin-bottom:9px}
.diagram-selector select{width:100%;border:1px solid #447595;background:#0c2033;color:white;padding:9px;border-radius:9px}
.diagram-selector small{display:block;color:#a8c7d8;font-size:10px;margin-top:7px;line-height:1.5}
.tool.diagram-hidden{display:none!important}
.minimap{position:sticky;bottom:14px;margin:-168px 16px 16px auto;width:216px;height:144px;background:rgba(255,255,255,.96);border:2px solid #8ab3ce;border-radius:11px;z-index:2;box-shadow:0 9px 32px #1a476044;overflow:hidden;cursor:crosshair}
.minimap svg{width:100%;height:100%}
.workspace .node{cursor:grab}.workspace .node:active{cursor:grabbing}
.group-selected .shape{stroke:#8b5cf6!important;stroke-width:3!important}
@media(max-width:1200px){.layout{grid-template-columns:var(--left-size,260px) 6px minmax(0,1fr) 255px!important}}
@media(max-width:850px){.layout{grid-template-columns:230px minmax(0,1fr)!important}.sidebar-resizer{display:none}.minimap{width:150px;height:102px;margin-top:-125px}}
@media(max-width:650px){.layout{grid-template-columns:minmax(0,1fr)!important}.minimap{width:134px;height:94px;margin-top:-110px}}

/* v1.6.2 — live connection preview visual hints */
#connection-preview{pointer-events:none!important}
.work.mode-connect .workspace{cursor:crosshair}

/* v1.7 Smart Connector Engine */
.endpoint-handle{fill:#fff;stroke:#00a9ad;stroke-width:3;cursor:crosshair;pointer-events:all}
.waypoint-handle{fill:#fff;stroke:#e08a16;stroke-width:2.5;cursor:move;pointer-events:all}
.edge-floating{position:fixed;z-index:25;top:115px;left:50%;transform:translateX(-50%);display:flex;gap:7px;align-items:center;border-radius:12px;background:#10273e;color:#eaf7ff;border:1px solid #3d738b;padding:9px 12px;box-shadow:0 10px 25px #0004}
.edge-floating[hidden],.editor-context[hidden]{display:none!important}
.edge-floating button,.editor-context button,.inspector-actions button{border:1px solid #49718c;background:#1b3d59;border-radius:8px;color:#f0faff;padding:7px 10px;cursor:pointer;font:inherit;font-size:12px}
.edge-floating button:hover,.editor-context button:hover,.inspector-actions button:hover{background:#1a648a}
.editor-context{position:fixed;z-index:100;background:#102338;border:1px solid #41637c;border-radius:11px;min-width:210px;box-shadow:0 16px 40px #0007;padding:8px;display:flex;flex-direction:column;gap:4px}
.editor-context button{text-align:left;border:0;background:transparent}
.inspector-actions{display:flex;gap:5px;flex-wrap:wrap;margin:8px 0 12px}
.inspector-resizer{position:absolute;right:var(--inspector-width,285px);top:110px;bottom:26px;width:7px;cursor:col-resize;z-index:12;background:transparent}
.inspector-resizer:hover{background:#27aee066}
.panel.right{min-width:230px;max-width:560px}
.panel.right select,.panel.right input{min-width:0;max-width:100%}
@media(max-width:1000px){.edge-floating{top:auto;bottom:42px;max-width:95vw;flex-wrap:wrap}.inspector-resizer{display:none}}

.layout>.inspector-resizer{position:relative;right:auto;top:auto;bottom:auto;flex:0 0 7px;width:7px;min-width:7px;background:#1a3952;touch-action:none;}

/* v1.7.1: five explicit grid tracks: left | left splitter | canvas | right splitter | inspector. */
.layout{
  display:grid!important;
  grid-template-columns:minmax(225px,var(--left-size,330px)) 7px minmax(0,1fr) 7px minmax(235px,var(--inspector-width,290px))!important;
  grid-template-rows:minmax(0,1fr)!important;
  min-height:0;min-width:0;overflow:hidden;
}
.layout>.left,.layout>.work,.layout>.right{min-width:0;min-height:0;max-width:none;grid-row:1}
.layout>.left{grid-column:1}
.layout>.sidebar-resizer{grid-column:2}
.layout>.work{grid-column:3;position:relative;overflow:auto!important}
.layout>.inspector-resizer{grid-column:4;display:block;position:relative;inset:auto;width:7px;min-width:7px;z-index:3;background:#163049;cursor:col-resize}
.layout>.right{grid-column:5;width:auto!important;max-width:none!important;display:block;padding:18px 16px!important;overflow:auto}
.app{min-height:0;height:100dvh;overflow:hidden}
.top{min-width:0}.bottom{min-width:0}
@media(max-width:1000px){
 .layout{grid-template-columns:minmax(200px,var(--left-size,245px)) 6px minmax(0,1fr) 6px minmax(225px,var(--inspector-width,250px))!important}
 .layout>.inspector-resizer{display:block}
}
@media(max-width:800px){
 .layout{grid-template-columns:minmax(195px,var(--left-size,220px)) 6px minmax(0,1fr)!important}
 .layout>.right,.layout>.inspector-resizer{display:none!important}
}
@media(max-width:650px){
 .layout{grid-template-columns:minmax(0,1fr)!important}
 .layout>.left{display:none}
 .layout>.left.open{display:block;position:absolute;top:85px;bottom:25px;left:0;width:min(85vw,310px);z-index:10}
 .layout>.sidebar-resizer{display:none}
 .layout>.work{grid-column:1}
}

/* v1.7.2 stabilized chrome + attribution + usage statistics */
.site-logo{height:30px;max-width:110px;width:auto;object-fit:contain;vertical-align:middle;margin-right:6px}.site-wordmark{display:inline-block;vertical-align:middle}
.top{align-content:center;gap:7px}.top button{white-space:nowrap}.app{min-height:0}.layout{min-height:0;height:100%;overflow:hidden}.layout > *{min-height:0}.work{contain:layout style;min-width:0}.panel{min-width:0}.right{overflow:auto}
.bottom{display:flex;gap:12px;align-items:center;flex-wrap:wrap;line-height:1.5;min-height:34px}.bottom #status{flex:1;min-width:160px}.site-metrics{display:flex;align-items:center;gap:11px;flex-wrap:wrap;padding:3px 10px;border:1px solid #31516c;border-radius:8px;background:#11273c;color:#d9efff}.site-metrics span{white-space:nowrap}.site-metrics b{color:#fff;font-size:12px}.site-metrics small{font-size:10px;color:#8db8d4}.online-dot{display:inline-block;width:7px;height:7px;background:#28cca4;border-radius:50%;margin-right:3px}.dev-credit{white-space:nowrap;color:#9ebbd1;font-size:10px}.dev-credit strong{color:#d9f3ff;font-weight:600}
@media(max-width:1250px){.bottom{gap:6px}.site-metrics{gap:7px}.dev-credit{font-size:9px}}
@media(max-width:850px){.bottom #status{width:100%}.site-metrics{flex:1}.dev-credit{white-space:normal}}

/* v1.7.4 menu bar, workspace controls, logo and focus */
.top{display:flex!important;align-items:center!important;gap:7px!important;flex-wrap:nowrap!important;min-height:62px!important;overflow:visible!important;padding:7px 12px!important;position:relative;z-index:19}
.top>.brand{flex:none;min-width:185px}.top>.brand .site-logo{height:38px;max-width:90px;object-fit:contain}.top>.brand .site-wordmark{font-size:16px}
.top>#filename{flex:1 1 180px;min-width:120px;max-width:250px}.top>button{flex:none;font-size:12px;padding:9px 11px}.top button:hover{filter:brightness(1.16)}
.workshop-menus{display:flex;gap:3px;flex:none;position:relative}.menu-drop{position:relative}.menu-drop summary{list-style:none;cursor:pointer;background:#1a334d;color:#e8f5ff;border:1px solid #34536e;border-radius:7px;padding:10px 11px;font-size:12px}.menu-drop summary::-webkit-details-marker{display:none}.menu-drop summary:hover,.menu-drop[open] summary{background:#266486}
.menu-entries{position:absolute;left:0;top:calc(100% + 5px);min-width:184px;padding:8px;display:grid;gap:5px;border-radius:10px;background:#11253b;border:1px solid #3b617c;box-shadow:0 14px 30px #0008;z-index:35}.menu-entries button{width:100%;text-align:left!important;white-space:nowrap}
.uml-help-dialog{background:#14263e;color:#e7f5ff;border:1px solid #48708d;border-radius:13px;max-width:440px;padding:22px;line-height:1.8}.uml-help-dialog::backdrop{background:#0008}
.app.focus-mode .layout{grid-template-columns:0 0 minmax(0,1fr) 0 0!important}.app.focus-mode .layout>.left,.app.focus-mode .layout>.right,.app.focus-mode .layout>.sidebar-resizer,.app.focus-mode .layout>.inspector-resizer{display:none!important}.app.focus-mode .layout>.work{grid-column:3}.app.hide-inspector .layout{grid-template-columns:minmax(225px,var(--left-size,330px)) 7px minmax(0,1fr) 0 0!important}.app.hide-inspector .layout>.right,.app.hide-inspector .layout>.inspector-resizer{display:none!important}
.app.hide-minimap .minimap{display:none!important}.uml-online-stat{white-space:nowrap;color:#ccf7eb}
@media(max-width:1400px){.top{flex-wrap:wrap!important;overflow:visible!important}.top>.brand{min-width:155px}}
@media(max-width:800px){.top{gap:5px!important}.top>.brand{min-width:125px}.top>.brand .site-logo{display:none}.top>.brand .site-wordmark{font-size:14px}.app.hide-inspector .layout{grid-template-columns:minmax(195px,var(--left-size,220px)) 6px minmax(0,1fr)!important}}
@media(max-width:650px){.app.hide-inspector .layout{grid-template-columns: minmax(0,1fr)!important}}

/* v1.7.5 Local draft recovery */
.autosave-state{font-size:11px;white-space:nowrap;padding:8px 10px;border:1px solid #30516d;border-radius:9px;background:#102841;color:#acd9ee}.autosave-state[data-state="saved"]{color:#87efc7;border-color:#246b5c}.autosave-state[data-state="error"]{color:#ffd4a1;border-color:#a76b31}.recovery-dialog{border:1px solid #42617e;border-radius:16px;background:#12263e;color:#eff7ff;max-width:min(490px,92vw);padding:0;box-shadow:0 25px 100px #0009}.recovery-dialog::backdrop{background:#020914b8}.recovery-content{padding:24px}.recovery-content h2{margin:8px 0 10px;font-size:22px}.recovery-content p{line-height:1.7;color:#c5d8e9}.recovery-icon{font-size:34px;color:#77d9fc}.recovery-meta{font-size:13px;padding:12px;background:#0c1c30;border-radius:8px;line-height:1.7}.recovery-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}.recovery-actions button{border:1px solid #456681;color:#eaf6ff;background:#23415e;border-radius:8px;padding:10px 12px;cursor:pointer}.recovery-actions .recovery-primary{background:#087fa4;border-color:#45c7e9;font-weight:700}@media(max-width:1200px){.autosave-state{order:2}}

/* v1.7.6 Project Explorer and worksheet tabs */
.app{grid-template-rows:auto minmax(0,1fr) 40px auto!important}
.sheets-bar{grid-row:auto;display:flex;align-items:center;gap:8px;min-width:0;min-height:40px;padding:4px 10px;background:#101f32;color:#d9f1ff;border-top:1px solid #31536d;z-index:8}
.sheets-bar button{border:1px solid #355873;color:#dff2ff;background:#203950;cursor:pointer;border-radius:6px;padding:5px 10px;font-family:inherit;font-size:12px;white-space:nowrap}
.sheets-bar button:hover,.sheets-bar button:focus-visible{background:#256388;outline:1px solid #60c5eb}
.project-mini{display:flex;gap:4px;flex-shrink:0}.project-mini #projectToggleBtn{max-width:180px;text-overflow:ellipsis;overflow:hidden}
.sheets-strip{display:flex;gap:4px;overflow:auto;min-width:0;flex:1;scrollbar-width:thin;padding:2px 0}
.sheets-strip .sheet-tab{position:relative;display:flex;align-items:center;gap:6px;border-radius:8px 8px 3px 3px;padding:7px 12px 6px;max-width:220px;flex:none;user-select:none;color:#bed7eb;background:#1d344b}
.sheet-tab .sheet-text{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:165px}.sheet-tab[aria-selected="true"]{background:#e4f4ff;color:#0d3552;border-color:#81badb;font-weight:700;border-bottom:3px solid #19a4cb}
.sheet-tab[aria-selected="true"] i{color:#007ca4}.sheet-tab[draggable="true"]{cursor:grab}.sheet-tab.drag-over{box-shadow:inset 3px 0 #40c8fd}
.sheets-bar .sheet-add{background:#18779b;border-color:#4aabd1;font-size:17px;padding:4px 12px}.sheet-count{font-size:10px;color:#a3cce4;white-space:nowrap}
.sheet-tab-rename{width:148px;padding:4px 7px;border:1px solid #329ccd;border-radius:5px;font:inherit}
.sheet-menu{position:fixed;z-index:2000;background:#12263c;border:1px solid #4b7492;padding:6px;border-radius:10px;min-width:200px;box-shadow:0 15px 35px #0008;display:grid;gap:3px}
.sheet-menu[hidden],.project-explorer[hidden]{display:none!important}.sheet-menu button{border:0;background:transparent;color:#e3f6ff;text-align:left;padding:9px;border-radius:6px;cursor:pointer}.sheet-menu button:hover{background:#27516f}.sheet-menu button:disabled{opacity:.45;cursor:not-allowed}.sheet-menu hr{border:0;border-top:1px solid #3d6078;margin:3px}
.project-explorer{background:#101e31;border:1px solid #375671;border-radius:10px;margin:10px 12px;padding:10px;color:#deefff}
.project-explorer header{display:flex;align-items:center;justify-content:space-between;gap:5px;font-size:12px}.project-explorer header button{background:none;color:#badff4;border:0;cursor:pointer}.project-name{font-weight:700;word-break:break-word;padding:9px 3px;color:#6bd9f7;font-size:13px}
.project-tree{display:grid;gap:8px}.project-phase{border:1px solid #33516a;border-radius:8px;padding:5px}.project-phase>summary{cursor:pointer;font-size:12px;font-weight:700;padding:5px;color:#cceaff}
.project-tree-item{display:flex;width:100%;align-items:center;gap:7px;border:0;text-align:left;background:transparent;color:#c3d7e7;cursor:pointer;font:inherit;padding:7px;border-radius:6px;font-size:11px}.project-tree-item:hover,.project-tree-item.active{background:#205273;color:white}.project-tree-item span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.project-add{width:100%;border:1px solid #367ea1;background:#1b4c69;color:white;padding:9px;border-radius:7px;cursor:pointer;margin-top:9px}
.menu-entries button i{font-size:14px;margin-right:7px}.top .brand .site-logo{height:42px;max-width:108px}
@media(max-width:860px){.project-mini #projectToggleBtn span,.sheet-count{display:none}.sheets-bar{gap:4px;padding:3px 5px}.sheets-strip .sheet-tab{max-width:150px}.top .brand .site-logo{max-width:78px}}

/* v1.7.7 Project and Worksheet UX */
.tabs-scroll{flex:0 0 auto;min-width:28px;padding:5px!important;background:#193047!important}
.new-diagram-dialog{border:1px solid #416889;border-radius:16px;background:#10243a;color:#ecf8ff;padding:0;width:min(490px,calc(100vw - 24px));max-height:90vh;box-shadow:0 30px 90px #0008;font-family:inherit}
.new-diagram-dialog::backdrop{background:rgba(2,10,20,.74)}.new-diagram-dialog form{padding:23px;display:grid;gap:11px}
.new-diagram-dialog header{display:flex;justify-content:space-between;gap:12px}.new-diagram-dialog h2{margin:4px 0;font-size:21px}.new-diagram-dialog p{color:#a7c4dc;font-size:12px;margin:5px 0 15px}
.new-diagram-eyebrow{color:#70d4f1;font-size:11px;letter-spacing:.1em}.new-diagram-dialog label{font-size:12px;color:#bedbf0;font-weight:600}.new-diagram-dialog input,.new-diagram-dialog select{width:100%;background:#081b30;color:#fff;border:1px solid #48708d;border-radius:9px;padding:11px;font:inherit;box-sizing:border-box}
.new-diagram-dialog button{cursor:pointer;border:1px solid #4a6680;color:#e5f5ff;background:#223d58;border-radius:9px;padding:9px 13px;font:inherit}.new-diagram-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:15px}.new-diagram-actions #createDiagramBtn{background:#137ba7;border-color:#37a4ca;font-weight:700}.new-diagram-dialog #newDiagramClose{background:transparent;border:0;height:34px}
.project-search-wrap{display:flex;align-items:center;gap:7px;padding:6px 10px;border:1px solid #43607a;border-radius:8px;margin:9px 0;background:#0b2035;color:#a5cfe5}.project-search-wrap input{width:100%;min-width:0;background:transparent;border:0;outline:0;color:#f5fbff;font-size:12px;font-family:inherit}
.workshop-menus .menu-drop summary i,.menu-drop button i{margin-right:7px}.project-phase summary i{margin-right:7px}
@media(max-width:720px){.sheets-bar{max-width:100vw}.tabs-scroll{padding:5px!important}.new-diagram-dialog form{padding:15px}}

/* v1.8 UML advanced diagrams */
.v18-library{border:1px solid #375472;background:#142b43;border-radius:10px;padding:12px;margin:14px 10px;color:#cce9ff}.v18-library h3{font-size:14px;color:#7ddcfa;margin:16px 0 4px}.v18-library p{font-size:11px;color:#a5c5e0}.v18-tools{display:grid;grid-template-columns:1fr 1fr;gap:6px}.v18-tools .tool{min-height:54px;border:1px solid #345877;border-radius:8px;background:#203d59;color:#e6f7ff;font:500 11px Prompt,sans-serif;display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:grab;touch-action:none}.v18-tools .tool i{font-size:20px;color:#67d2f3}.v18-tools .tool:hover{background:#275373}.v18-library .up-example{margin-top:8px;width:100%}.v18-library .diagram-hidden{display:none!important}.v18-node-fields.hide,.v18-message.hide{display:none!important}

/* v1.8.1: sequence messages are vertically draggable; increased inspector legibility */
.sequence-message {cursor:ns-resize;} .v18-message input{min-height:38px;} .up-diagram .tool{touch-action:none;}

/* v1.8.2 sidebar tabs and integrity UI */
.left-tab-bar{position:sticky;top:0;z-index:15;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:5px;padding:10px;background:#0e1c30;border-bottom:1px solid #335575}
.left-tab-button{display:flex;align-items:center;justify-content:center;gap:4px;border:1px solid #345b7a;border-radius:8px;background:#1a334c;color:#c8e7fa;padding:11px 3px;font-family:inherit;font-size:12px;cursor:pointer}.left-tab-button[aria-selected="true"]{background:#087da5;color:white;border-color:#40c0ec;font-weight:700}
.left-tab-pane[hidden],.project-explorer[hidden]{display:none!important}.left-tab-pane{padding:0 9px 22px}.left-tab-pane#upWorkspacePane{padding:0}.left-tab-pane#projectWorkspacePane .project-explorer{display:block!important;margin-top:10px}
.shape-tool-host{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}.shape-tool-host .tool{display:flex;min-width:0;padding:10px 5px;text-align:left}.shape-tool-host .tool span{overflow-wrap:anywhere}.shape-tool-host .tool.diagram-hidden{display:none!important}
.integrity-status{margin-top:16px;padding:12px;background:#123d38;border:1px solid #327a68;border-radius:8px;font-size:12px;color:#baf8dc}.integrity-status.has-issues{background:#3b2b19;border-color:#b88b34;color:#ffe2a5}.integrity-banner{position:sticky;top:50px;z-index:9;margin:4px 16px;padding:10px 14px;border:1px solid #c3943d;border-radius:8px;background:#fff3d5;color:#744c10;font-size:13px;box-shadow:0 5px 18px #0002}.integrity-banner[hidden]{display:none!important}

/* v1.8.3 use case & activity symbol catalog */
.v183-shape-catalog{padding:12px 10px;border-top:1px solid #314d66;margin-top:10px;color:#d9efff}.v183-shape-catalog[hidden],.v183-shape-grid[hidden],.v183-hide{display:none!important}.v183-shape-catalog h4{font-size:12px;color:#77d9ff;margin:10px 0}.v183-shape-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.v183-shape-grid .tool{min-height:68px;display:flex;gap:8px;align-items:center;text-align:left;background:#1d3550;border:1px solid #385c77;color:#e9f7ff;border-radius:9px;padding:8px;cursor:grab}.v183-shape-grid .tool em{color:#61dfff;font-size:19px}.v183-shape-grid .tool small{display:block;font-size:10px;color:#a9cde7}.v183-shape-grid .tool:hover{border-color:#55d0ee;background:#254766}.v183-shape-hint{font-size:11px;color:#a2c9e3;line-height:1.6}

/* v2 modular palette */
.uml-v2-palette[hidden]{display:none!important}.uml-v2-palette h4{color:#7dd3fc;margin:12px 0 8px}.uml-v2-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.uml-v2-button{border:1px solid #395777;background:#1d3650;color:#eff9ff;padding:12px 7px;border-radius:9px;min-height:66px;cursor:grab;text-align:center;font:inherit;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px}.uml-v2-button:hover{background:#215478;border-color:#39bdec}.uml-v2-button .bi{font-size:20px;color:#7bdeff}.uml-v2-palette .v2-hint{font-size:12px;opacity:.85;margin:10px 0}.uml-v2-compat-msg{font-size:11px;color:#bdd5e9}
.uml-v2-validation{padding:14px 8px;border-top:1px solid #41617c;margin-top:18px;color:#c5edff}.uml-v2-validation button{margin:8px 0;background:#187f9c;border:1px solid #65afc7;border-radius:7px;padding:9px;color:white;cursor:pointer}.uml-v2-validation p{font-size:12px;line-height:1.5}

/* v2.0.1 New Diagram wizard refinement */
#newDiagramTemplate{cursor:pointer}

/* v2.0.2 Class Toolkit */
.class-toolkit-block{margin:12px 12px 18px;padding:13px;border:1px solid #31536f;border-radius:10px;background:#142840;color:#d9f4ff}
.class-toolkit-block h4{font-size:13px;margin:8px 0 10px;color:#81dafa}
.class-toolkit-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.class-toolkit-grid button{min-height:46px;border:1px solid #40617c;background:#1d3751;color:#e5f5ff;border-radius:7px;text-align:left;cursor:pointer;padding:8px;font:inherit;font-size:12px}
.class-toolkit-grid button:hover,.class-toolkit-grid button.active{background:#08729b;border-color:#64d3fb}
.class-toolkit-info{font-size:11px;color:#add3eb;line-height:1.7}
#classMeta .field input[type=checkbox]{width:auto;display:inline-block;margin-right:6px}

/* v2.0.3 Use Case Toolkit */
#usecaseToolkit{margin:14px 0;padding:12px;border-top:1px solid #385470;color:#d7ecfc}#usecaseToolkit h4{margin:12px 0 9px;color:#7edbff}#usecaseToolkit .class-toolkit-grid{display:grid;grid-template-columns:1fr 1fr;gap:7px}#usecaseCases{display:grid;grid-template-columns:1fr;gap:7px}#usecaseToolkit button{min-height:39px}#usecaseAuditResult{font-size:12px;line-height:1.6;margin-top:9px;color:#a9d5ef}#usecaseExtensionPoints{width:100%;min-height:70px;background:#0a1a2c;color:#fff;border:1px solid #3e5973;border-radius:8px;padding:8px}#usecaseToolkit[hidden]{display:none!important}

/* 2.0.4 preview modal */
.layout-preview-dialog{border:1px solid #4179a2;border-radius:16px;background:#102238;color:#e4f3ff;max-width:430px;width:calc(100% - 40px);padding:0;box-shadow:0 18px 75px #0008}.layout-preview-dialog::backdrop{background:#0818279a}.layout-preview-content{padding:24px}.layout-preview-content h2{margin:0 0 10px;font-size:20px}.layout-preview-content p{line-height:1.5;color:#b5d8f4}.layout-preview-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:20px}.layout-preview-actions button{background:#1e3a57;color:#fff;border:1px solid #507ba0;border-radius:8px;padding:10px 16px;cursor:pointer}.layout-preview-actions #layoutApplyBtn{background:#0d87ab}