/* Diagram Tool — layout: tools column (left) | document pane(s) (centre) | file/zoom/save column (right of each pane) */
*{box-sizing:border-box}
[hidden]{display:none!important}
/* keyboard focus is always visible (508): a clear ring on buttons, inputs, selects, links and the canvas */
:focus-visible{outline:3px solid #2E73B8;outline-offset:1px}
svg.canvas:focus-visible{outline:3px solid #2E73B8;outline-offset:-3px}
body{margin:0;font:13px Arial,sans-serif;display:flex;flex-direction:column;height:100vh;overflow:hidden;background:#dfe0e6}

/* ---- slim title strip ---- */
#top{flex:0 0 28px;display:flex;align-items:center;gap:8px;padding:0 8px 0 10px;background:#2b2f36;color:#fff;border-bottom:2px solid #6b7280;white-space:nowrap;overflow:hidden}
#top .brand{font-weight:bold;font-size:13px;letter-spacing:.02em}
#top .ver{font-size:10px;color:#9aa3ad;margin-left:-4px}
#top .trialbadge{font-size:11px;color:#f5e6a8;background:#4a3d12;padding:1px 8px;border-radius:10px;flex:0 0 auto}
#top .trialbadge.ended{color:#fff;background:#8a2a2a}
#top .sub{font-size:11px;color:#c9ced6;overflow:hidden;text-overflow:ellipsis;flex:1;min-width:0}
#top .help{color:#fff;background:#4b5563;text-decoration:none;font-size:11px;padding:2px 8px;border-radius:10px;white-space:nowrap}#top .help:hover{background:#5b6573}
#top .menu.topmenu{position:relative;flex:0 0 auto}
#top .menu.topmenu .menubtn{width:auto}
#top .menu.topmenu .menulist{right:0;left:auto;min-width:180px;z-index:12;width:max-content}
#top .menu.topmenu .menulist a,#top .menu.topmenu .menulist button{display:block;width:100%;text-align:left;padding:6px 10px;border:0;border-radius:3px;background:transparent;color:#223;font:13px Arial,sans-serif;cursor:pointer;text-decoration:none;white-space:nowrap}
#top .menu.topmenu .menulist a:hover,#top .menu.topmenu .menulist button:hover{background:#e8eefc}
#top button{font:inherit;font-size:11px;padding:2px 8px;border:0;border-radius:10px;background:#4b5563;color:#fff;cursor:pointer;white-space:nowrap}
#top button:hover{background:#5b6573}
#top button.on,#focusbtn.on{background:#2a6}
#open2nd{background:#2a6}#open2nd:hover{background:#2b7}

/* ---- main row: tools | panes ---- */
#main{display:flex;flex-direction:row;flex:1;min-height:0;min-width:0}

/* ---- left tools column ---- */
#bar{flex:0 0 168px;display:flex;flex-direction:column;gap:8px;padding:8px 7px;background:#eef;border-right:1px solid #bbc;overflow-y:auto;position:relative}
#bar .grp{display:flex;flex-direction:column;gap:5px}
.gt{font-size:10px;font-weight:bold;letter-spacing:.06em;text-transform:uppercase;color:#667;margin:4px 0 2px;padding-bottom:2px;border-bottom:1px solid #ccd}
#bar .grp .gt:first-child{margin-top:0}
#bar button,.phead button{width:100%;padding:5px 4px;border:1px solid #99a;border-radius:4px;background:#fff;cursor:pointer;font:inherit;white-space:nowrap}
#bar button:hover,.phead button:hover{background:#f4f6ff}
#bar button.on,#libtoggle.on{background:#9cf;border-color:#58c}
#bar select,#bar input[type=number]{width:100%;font:inherit;padding:3px 4px;border:1px solid #99a;border-radius:4px;background:#fff}
#bar label,.phead label{display:flex;align-items:center;gap:6px;font-size:12px;white-space:nowrap;cursor:pointer;min-height:22px}
#bar label input[type=number]{width:58px;flex:0 0 auto}
#bar input[type=color]{width:28px;height:22px;padding:0;border:1px solid #99a;border-radius:3px;background:#fff}
.row{display:flex;gap:4px;align-items:center}.row>*{flex:1 1 0;min-width:0}
#bar .row>label{flex:2 1 0}
#bar .row>label input[type=number]{flex:1 1 0;width:auto;min-width:44px}
#bar .row>button{flex:1 1 0;min-width:34px;padding-left:2px;padding-right:2px}
.hint{color:#556;font-size:11px;line-height:1.3;margin-top:auto}
.iconbtn .ic{font-size:16px;line-height:1;vertical-align:-2px;margin-right:2px}
#undo:disabled,#redo:disabled{opacity:.45;cursor:default}
.selinfo{font-size:11px;color:#334;background:#fff;border:1px solid #ccd;border-radius:4px;padding:3px 6px;min-height:20px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* collapse controls */
.collapse-btn{flex:0 0 auto;width:24px;min-width:24px;height:22px;padding:0;border:1px solid #99a;border-radius:4px;background:#fff;cursor:pointer;font:12px/1 Arial,sans-serif;color:#445}
#bar>.collapse-btn{align-self:flex-end;width:24px;margin-bottom:-2px}
.phead>.collapse-btn{align-self:flex-start;width:24px;margin-bottom:2px}
.collapse-btn:hover{background:#f4f6ff}

/* left rail when the tools column is collapsed — Library stays one click away */
#bar.collapsed{flex:0 0 44px;padding:6px 4px;gap:6px;overflow-x:hidden}
#bar.collapsed .bar-hide,#bar.collapsed .selinfo,#bar.collapsed .gt{display:none}
#bar.collapsed button{padding:6px 0;font-size:11px}
#bar.collapsed .iconbtn .blab{display:none}
#bar.collapsed .iconbtn .ic{margin:0}
#bar.collapsed>.collapse-btn{align-self:center}

/* ---- panes ---- */
#panes{display:flex;flex:1;min-width:0;min-height:0}
.pane{display:flex;flex-direction:row;flex:1 1 0;min-width:160px;border-left:3px solid transparent;border-top:3px solid transparent}
.pane.active{border-left-color:#2a6;border-top-color:#2a6}
.pane[hidden],#divider[hidden]{display:none}
#divider{flex:0 0 7px;cursor:col-resize;background:#556}#divider:hover{background:#2a6}
.pbody{display:flex;flex-direction:column;flex:1 1 0;min-width:0;min-height:0}

/* canvas area: scrolls when big, centred when small */
#wrap,.wrap{flex:1;overflow:auto;background:#6e6f78;position:relative;display:flex;user-select:none;-webkit-user-select:none}
svg.canvas{background:#fff;display:block;margin:auto;flex:0 0 auto;box-shadow:0 2px 10px #0006}

/* empty-state overlay */
#drop,.drop{position:absolute;inset:24px;border:3px dashed #fff;color:#fff;background:#0008;font-size:16px;line-height:1.45;display:flex;align-items:center;justify-content:center;text-align:center;pointer-events:none;border-radius:8px;text-shadow:0 1px 2px #000;padding:20px}
.drop .drop-msg{display:flex;flex-direction:column;gap:8px;align-items:center;max-width:28em}
.drop strong{font-size:22px;font-weight:700;line-height:1.25}
.drop .drop-fmts{font-size:13px;opacity:.95;letter-spacing:.02em}
.drop .k-dropopen,.drop .k-sampleopen{pointer-events:auto;font:inherit;font-weight:bold;font-size:14px;color:#fff;background:#2a6;border:0;border-radius:16px;padding:5px 14px;cursor:pointer;text-shadow:none}
.drop .k-dropopen:hover,.drop .k-sampleopen:hover{background:#2b7}

#status,.status{padding:2px 8px;background:#ffd;min-height:18px;font-size:12px;border-top:1px solid #cc9;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.statusbar{display:flex;align-items:stretch;background:#ffd;border-top:1px solid #cc9;flex:0 0 auto;min-height:18px}
.statusbar .status{flex:1;min-width:0;border-top:0;background:transparent;min-height:0}
.statusbar .legal{flex:0 0 auto;display:flex;align-items:center;gap:8px;padding:0 8px 0 4px;font-size:11px;white-space:nowrap;color:#667}
.statusbar .legal a{color:#445;text-decoration:none}
.statusbar .legal a:hover{text-decoration:underline}

/* right-hand pane column: open / zoom / save */
.phead{flex:0 0 156px;display:flex;flex-direction:column;gap:5px;padding:8px 7px;background:#e4e4ea;border-left:1px solid #bbc;overflow-y:auto;position:relative}
.pane.active .phead{background:#d6ecdf}
.ptitle{font-size:13px;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.psub{margin:0 0 2px;font-size:10px;line-height:1.3;color:#445;white-space:normal}
.btn{display:block;text-align:center;border:1px solid #888;padding:5px 6px;border-radius:4px;background:#fff;cursor:pointer}
.primary{background:#2a6;color:#fff;border-color:#185}.primary:hover{background:#2b7}
.k-pagebox{display:flex;align-items:center;gap:3px;font-size:12px}
.k-pagebox button{flex:0 0 28px;width:28px;padding:5px 0;font-size:11px}
.k-pagebox input{flex:1 1 0;min-width:0;width:40px;font:inherit;padding:4px 2px;text-align:center;border:1px solid #99a;border-radius:4px}
.k-pagebox .k-pcount{flex:0 0 auto;color:#556;white-space:nowrap}
.phead select[hidden]{display:none}
.phead input.k-find{width:100%;font:inherit;padding:4px 6px;border:1px solid #99a;border-radius:4px}
.phead select.k-found{font-size:11px;padding:2px;margin-bottom:2px}.phead select.k-found option{padding:2px 4px}
.phead button.primary{background:#2a6;color:#fff;border-color:#185}.phead button[hidden]{display:none}
.phead select{width:100%;font:inherit;padding:3px;border:1px solid #99a;border-radius:4px;background:#fff;margin-bottom:2px}
.pane.dragsrc{cursor:copy}

/* collapsed right panel: a slim strip, one click to reopen */
.phead.collapsed{flex:0 0 26px;padding:4px 2px;overflow:hidden;gap:0;align-items:center}
.phead.collapsed>:not(.phead-toggle){display:none}
.phead.collapsed>.phead-toggle{align-self:center;width:22px;margin:0}

/* dropdown menus (Save as, Page) — overlay, don't stretch the column */
.menu{position:relative}
.menubtn{width:100%}
.menulist{position:absolute;right:0;top:calc(100% + 2px);z-index:8;min-width:100%;width:max-content;max-width:240px;background:#fff;border:1px solid #99a;border-radius:4px;box-shadow:0 4px 16px #0003;padding:4px;display:none}
.menu.open .menulist{display:block}
.menu.open .menubtn{background:#f4f6ff}
.menulist[hidden]{display:none}
.menu.open .menulist[hidden]{display:block}
.menulist button,.phead .menulist button{display:block;width:100%;text-align:left;padding:6px 8px;border:0;border-radius:3px;background:transparent;font:inherit;cursor:pointer;white-space:nowrap}
.menulist button:hover,.phead .menulist button:hover{background:#e8eefc}
.menulist button.on{background:#d7ebff}
.menulabel{display:flex;align-items:center;gap:6px;padding:4px 8px;font-size:12px;white-space:nowrap}
.menulabel select{width:auto;flex:1;margin:0}
.menusep{height:1px;background:#ccd;margin:4px 6px}

/* focus mode: the diagram takes the whole window; a small button exits */
#focusexit{position:fixed;top:8px;right:8px;z-index:20;padding:6px 12px;border:0;border-radius:16px;background:#2b2f36;color:#fff;font:12px Arial,sans-serif;cursor:pointer;box-shadow:0 2px 8px #0006}
#focusexit:hover{background:#3a4048}
#focusexit[hidden]{display:none}
body.focus-mode #top,
body.focus-mode #bar,
body.focus-mode .phead,
body.focus-mode #divider{display:none!important}
body.focus-mode .pane:not(.active){display:none!important}
body.focus-mode #focusexit{display:block!important}

/* text hit areas on the canvas */
.txthit{fill:transparent;stroke:none;cursor:move}.txthit:hover{fill:#0099ff14;stroke:#09f;stroke-width:1px;stroke-dasharray:3 2;vector-effect:non-scaling-stroke}

/* text edit dialog */
#modal,#about{position:fixed;inset:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:10}#modal>div,#about>div{background:#fff;padding:12px;border-radius:6px;box-shadow:0 4px 24px #0005;max-width:min(92vw,440px)}
#about p{margin:0 0 10px;line-height:1.45;color:#223}
#about .about-links{margin:0 0 10px;padding:0;list-style:none}
#about .about-links li{margin:0 0 6px}
#about a{color:#1a4d8c}
#about .about-note{font-size:11px;color:#667;margin-bottom:12px}
#modal .mtitle,#about .mtitle{font-weight:bold;margin-bottom:6px}#modal .mtitle,#about .mtitle small{font-weight:normal;color:#667;margin-left:8px}
#modal textarea{font:13px/1.4 Arial,sans-serif;padding:6px;border:1px solid #99a;border-radius:4px;width:min(70vw,640px);margin-bottom:8px}
#modal button,#about button{padding:5px 14px;border:1px solid #888;border-radius:4px;background:#fff;cursor:pointer;font:inherit}#modal button.primary,#about button.primary{background:#2a6;color:#fff;border-color:#185}
.tfmt{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:8px;padding:6px 8px;background:#f3f4f8;border:1px solid #dde;border-radius:4px;font-size:12px}
.tfmt select,.tfmt input[type=number]{font:inherit;padding:3px;border:1px solid #99a;border-radius:4px}.tfmt input[type=number]{width:58px}
.tfmt label{display:flex;align-items:center;gap:4px}.tfmt input[type=color]{width:28px;height:24px;padding:0;border:1px solid #99a;border-radius:3px}
.tfmt button.tog{padding:3px 9px;min-width:32px}.tfmt button.tog.on{background:#9cf;border-color:#58c}.tfmt .seg{display:inline-flex}.tfmt .seg button{border-radius:0}.tfmt .seg button:first-child{border-radius:4px 0 0 4px}.tfmt .seg button:last-child{border-radius:0 4px 4px 0}
#tfmt[hidden]{display:none}
#modal[hidden],#about[hidden]{display:none}

@media print{
  body{display:block;height:auto;overflow:visible;background:#fff}
  #top,#bar,.phead,.status,.statusbar,.drop,#modal,#about,#divider,.pane:not(.active),#focusexit,.collapse-btn,.menulist{display:none!important}
  #main,#panes{display:block}.pane,.pbody{display:block;border:0}
  .wrap{overflow:visible;background:#fff;display:block}svg.canvas{margin:0;box-shadow:none}
}

/* icon-set request: a text link in the Library pane, no extra chrome */
.phead .k-iconreq.linkish{width:100%;border:0;background:transparent;color:#1a4d8c;text-align:left;padding:4px 2px;font-size:11px;cursor:pointer;text-decoration:underline;border-radius:0}
.phead .k-iconreq.linkish:hover{background:transparent;color:#123a6a}

/* About: tour / sample actions sit in the existing dialog */
#about .about-actions{margin:0 0 12px;display:flex;gap:8px;flex-wrap:wrap}
#about .about-actions button{padding:5px 12px}

/* first-run tour: overlay only, hidden when closed (no canvas space) */
#tour{position:fixed;inset:0;z-index:30}
#tour[hidden]{display:none!important}
#tour-backdrop{position:absolute;inset:0;background:#0006;pointer-events:auto}
#tour-ring{position:absolute;border:2px solid #7cbcff;border-radius:6px;box-shadow:0 0 0 9999px #0005;pointer-events:none;z-index:1}
#tour-card{position:absolute;z-index:2;width:min(360px,calc(100vw - 24px));background:#fff;color:#223;padding:14px 16px 12px;border-radius:8px;box-shadow:0 8px 28px #0005;font:13px/1.45 Arial,sans-serif}
#tour-step{font-size:11px;color:#667;letter-spacing:.04em;text-transform:uppercase;margin-bottom:4px}
#tour-title{font-size:16px;margin:0 0 6px}
#tour-text{margin:0 0 12px;color:#223}
#tour-text b{font-weight:700}
.tour-actions{display:flex;align-items:center;justify-content:space-between;gap:8px}
.tour-nav{display:flex;gap:6px}
#tour-card button{font:inherit;padding:5px 12px;border:1px solid #888;border-radius:4px;background:#fff;cursor:pointer}
#tour-card button.primary{background:#2a6;color:#fff;border-color:#185}
#tour-card button:disabled{opacity:.45;cursor:default}
#tour-skip{background:transparent;border-color:transparent;color:#556;padding-left:4px}

@media print{
  #tour{display:none!important}
}