:root{
  --bg:#1e242c; --bg2:#262e38; --bg3:#2f3844; --line:#3c4654;
  --fg:#e7ecf3; --fg-dim:#9aa7b7; --accent:#3d9bff; --accent2:#ffb020;
  --canvas:#ffffff; --ink:#111418;
  --topbar:44px;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0;overflow:hidden}
body{position:fixed;inset:0}
body{
  font:13px/1.35 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);color:var(--fg);overflow:hidden;
  -webkit-font-smoothing:antialiased;
}
button,input,select{font:inherit;color:inherit}

/* ---------- toolbar ---------- */
#toolbar::-webkit-scrollbar{height:5px}
#toolbar::-webkit-scrollbar-thumb{background:#4a5666;border-radius:3px}
#toolbar{
  height:var(--topbar);display:flex;align-items:center;gap:6px;padding:0 10px;
  background:var(--bg2);border-bottom:1px solid var(--line);position:relative;z-index:30;
  overflow-x:auto;overflow-y:visible;min-width:0;scrollbar-width:thin;
}
.brand{font-weight:700;letter-spacing:.5px;margin-right:6px;white-space:nowrap}
.brand span{color:var(--fg-dim);font-weight:400}
.spacer{flex:1;min-width:8px}
.tgroup{display:flex;align-items:center;gap:2px;padding:0 6px;border-left:1px solid var(--line);height:28px;flex:0 0 auto}
.tgroup:first-of-type{border-left:0}
.tbtn{
  min-width:28px;height:26px;padding:0 6px;border:1px solid transparent;border-radius:5px;
  background:transparent;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
}
.tbtn:hover{background:var(--bg3)}
.tbtn.wide{padding:0 10px}
.tbtn.active{background:var(--accent);color:#fff}
.tbtn.primary{background:var(--accent);color:#fff}
.tbtn:disabled{opacity:.35;cursor:default}
.chk{display:flex;align-items:center;gap:4px;color:var(--fg-dim);white-space:nowrap;cursor:pointer}
.num{display:flex;align-items:center;gap:4px;color:var(--fg-dim)}
select,input[type=text],input[type=number],input[type=search]{
  background:var(--bg3);border:1px solid var(--line);border-radius:5px;padding:3px 6px;
}
#zoom-label{min-width:44px;text-align:center;color:var(--fg-dim)}
.menu-wrap{position:relative}
.menu{
  position:fixed;background:var(--bg2);border:1px solid var(--line);z-index:60;
  border-radius:8px;padding:4px;display:none;min-width:190px;box-shadow:0 12px 30px #0008;
}
.menu.open{display:block}
.menu button{display:block;width:100%;text-align:left;background:none;border:0;padding:7px 10px;border-radius:5px;cursor:pointer}
.menu button:hover{background:var(--bg3)}

/* ---------- layout ---------- */
#workspace{display:flex;height:calc(100% - var(--topbar))}
aside{background:var(--bg2);display:flex;flex-direction:column;min-width:0}
#palette{width:232px;border-right:1px solid var(--line)}
#inspector{width:262px;border-left:1px solid var(--line);overflow:auto}
.panel-head{
  display:flex;align-items:center;gap:6px;padding:8px 10px;border-bottom:1px solid var(--line);
  font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.6px;color:var(--fg-dim);
}
.panel-head input{flex:1;min-width:0;text-transform:none;letter-spacing:0;font-weight:400}

/* ---------- palette ---------- */
#lib-list{flex:1;overflow:auto;padding:6px}
.lib-cat{margin-bottom:6px}
.lib-cat>h4{
  margin:0;padding:6px 6px;font-size:11px;letter-spacing:.6px;text-transform:uppercase;
  color:var(--fg-dim);cursor:pointer;display:flex;gap:6px;align-items:center;
}
.lib-cat>h4::before{content:"▾";font-size:9px}
.lib-cat.collapsed>h4::before{content:"▸"}
.lib-cat.collapsed .lib-grid{display:none}
.lib-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.lib-item{
  background:#fff;border:1px solid var(--line);border-radius:7px;padding:4px;cursor:grab;
  display:flex;flex-direction:column;align-items:center;position:relative;
}
.lib-item:hover{outline:2px solid var(--accent)}
.lib-item svg{width:100%;height:46px;display:block}
.lib-item span{
  font-size:10px;color:#333;text-align:center;line-height:1.15;margin-top:2px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%;
}
.lib-item .mini-actions{position:absolute;top:2px;right:2px;display:none;gap:2px}
.lib-item:hover .mini-actions{display:flex}
.mini-actions button{
  width:17px;height:17px;border-radius:4px;border:1px solid #bbb;background:#fff;color:#333;
  font-size:10px;line-height:1;cursor:pointer;padding:0;
}
.palette-foot{padding:6px 10px;border-top:1px solid var(--line);color:var(--fg-dim)}

/* ---------- canvas ---------- */
#canvas-wrap{flex:1;position:relative;background:var(--canvas);overflow:hidden}
#canvas{width:100%;height:100%;display:block;cursor:default;touch-action:none}
#canvas.tool-wire{cursor:crosshair}
#canvas.tool-pan,#canvas.panning{cursor:grab}
#canvas.panning{cursor:grabbing}
#status{
  position:absolute;left:0;bottom:0;display:flex;gap:14px;padding:3px 10px;
  background:#00000010;color:#43506080;font-size:11px;font-variant-numeric:tabular-nums;pointer-events:none;
}
#hint{
  position:absolute;left:50%;transform:translateX(-50%);bottom:10px;background:#111c;color:#fff;
  padding:5px 12px;border-radius:20px;font-size:12px;pointer-events:none;opacity:0;transition:opacity .2s;
}
#hint.show{opacity:1}

/* svg scene */
.comp{cursor:move}
.comp .hit{fill:transparent;stroke:transparent;stroke-width:8}
.sel-box{fill:none;stroke:var(--accent);stroke-width:1;stroke-dasharray:4 3;pointer-events:none}
.pin-dot{fill:#d63a3a;opacity:0;pointer-events:none}
#canvas.show-pins .pin-dot{opacity:.75}
.pin-hot{fill:#d63a3a;opacity:1!important}
.wire{fill:none;stroke:var(--ink);stroke-width:1.2;stroke-linejoin:round;stroke-linecap:round}
.wire-halo{fill:none;stroke:var(--accent);stroke-width:5;opacity:.35;stroke-linejoin:round;stroke-linecap:round;pointer-events:none}
.wire-hit{fill:none;stroke:transparent;stroke-width:9;cursor:pointer}
.marquee{fill:#3d9bff22;stroke:var(--accent);stroke-width:1;stroke-dasharray:3 2}
.preview{opacity:.55}
.handle{fill:#fff;stroke:var(--accent);stroke-width:1.2;cursor:nwse-resize}

/* ---------- inspector ---------- */
#insp-body{padding:10px;display:flex;flex-direction:column;gap:10px}
#insp-body .empty{color:var(--fg-dim);text-align:center;margin-top:20px}
.field{display:flex;flex-direction:column;gap:3px}
.field>label{font-size:11px;color:var(--fg-dim);text-transform:uppercase;letter-spacing:.5px}
.field input,.field select,.field textarea{
  background:var(--bg3);border:1px solid var(--line);border-radius:5px;padding:5px 7px;width:100%;
}
.field.two{flex-direction:row;gap:8px}
.field.two>div{flex:1;display:flex;flex-direction:column;gap:3px}
.field.two label{font-size:11px;color:var(--fg-dim)}
.row{display:flex;gap:6px;flex-wrap:wrap}
.row .tbtn{border:1px solid var(--line)}
hr{border:0;border-top:1px solid var(--line);margin:4px 0;width:100%}
.sec-title{font-size:11px;text-transform:uppercase;letter-spacing:.6px;color:var(--fg-dim);margin-top:2px}
.pin-row{display:flex;gap:6px;align-items:center}
.pin-row b{width:56px;font-weight:500;color:var(--fg-dim);font-size:11px;overflow:hidden;text-overflow:ellipsis}
.pin-row input{flex:1}

/* ---------- modal / symbol editor ---------- */
.modal{position:fixed;inset:0;background:#000a;display:flex;align-items:center;justify-content:center;z-index:100}
.modal.hidden{display:none}
.modal-box{
  width:min(1100px,94vw);height:min(720px,92vh);background:var(--bg);border:1px solid var(--line);
  border-radius:12px;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 30px 80px #000a;
}
.modal-box>header{display:flex;align-items:center;gap:8px;padding:10px 12px;border-bottom:1px solid var(--line);background:var(--bg2)}
.modal-box>header .tbtn{border:1px solid var(--line)}
.symed-body{flex:1;display:flex;min-height:0}
.symed-tools{width:260px;border-right:1px solid var(--line);padding:10px;display:flex;flex-direction:column;gap:8px;overflow:auto}
.tool-list{display:flex;gap:4px;flex-wrap:wrap}
.tool-list .tbtn{border:1px solid var(--line);width:34px;height:30px}
.symed-canvas-wrap{flex:1;background:#fff;min-width:0}
#symed-canvas{width:100%;height:100%;display:block;touch-action:none}
.tip{color:var(--fg-dim);font-size:11px;line-height:1.4}
.se-shape{cursor:move}
.se-sel{stroke:var(--accent)!important;stroke-width:1.6!important}
.se-bounds{fill:none;stroke:#d63a3a;stroke-width:1;stroke-dasharray:5 4}
.se-pin{fill:#d63a3a}
.se-pin-label{font-family:'Courier New',monospace;fill:#d63a3a}

/* ---------- muestrario de color ---------- */
.swatches{display:flex;flex-wrap:wrap;gap:3px}
.sw{
  width:18px;height:18px;padding:0;border-radius:4px;border:1px solid #00000040;cursor:pointer;
  box-shadow:inset 0 0 0 1px #ffffff18;
}
.sw:hover{transform:scale(1.12)}
.sw.on{outline:2px solid var(--accent);outline-offset:1px}
.sw-none{
  background:var(--bg3);position:relative;
  background-image:linear-gradient(45deg,transparent 45%,#e05252 45%,#e05252 55%,transparent 55%);
}
.sw-custom{width:24px;height:18px;padding:0;border:1px solid var(--line);background:var(--bg3);cursor:pointer}

/* ---------- gestor de diagramas ---------- */
.menu hr{margin:4px 2px}
.menu-row{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:5px 10px;color:var(--fg-dim);
}
.menu-row select{background:var(--bg3);border:1px solid var(--line);border-radius:5px;padding:2px 6px}
.muted{color:var(--fg-dim);font-weight:400}
.docs-box{width:min(1000px,94vw);height:min(660px,90vh)}
.docs-body{flex:1;overflow:auto;padding:14px;min-height:0}
#docs-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(228px,1fr));gap:12px}
.doc-card{
  background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:10px;
  display:flex;flex-direction:column;gap:4px;position:relative;
}
.doc-card.current{border-color:var(--accent)}
.doc-thumb{
  height:132px;background:#fff;border-radius:6px;display:flex;align-items:center;justify-content:center;
  overflow:hidden;margin-bottom:6px;
}
.doc-thumb svg{max-width:100%;max-height:100%}
.doc-name{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.doc-meta{font-size:11px;color:var(--fg-dim)}
.doc-badge{
  position:absolute;top:16px;right:16px;background:var(--accent);color:#fff;
  font-size:10px;padding:2px 7px;border-radius:20px;
}
.doc-acts{display:flex;flex-wrap:wrap;gap:4px;margin-top:6px}
.doc-acts .tbtn{border:1px solid var(--line);font-size:12px;height:24px}
.doc-acts .tbtn.danger:hover{background:#c62828;color:#fff;border-color:#c62828}

/* ---------- sesión y modo de guardado ---------- */
#docs-mode{display:flex;align-items:center;gap:4px;font-weight:400;font-size:12px}
.mode{font-size:12px}
.mode.ok{color:#4caf50}
.mode.warn{color:var(--accent2)}
#btn-docs.server-on{box-shadow:inset 0 -2px 0 #4caf50}
.doc-owner{font-size:11px;color:var(--fg-dim);margin-top:4px;border-top:1px solid var(--line);padding-top:5px}
.tbtn.dim{opacity:.45}
.login-box{width:min(420px,94vw);height:auto}
.login-body{padding:16px;display:flex;flex-direction:column;gap:10px}
.login-body .row{margin-top:4px}
.login-body .row .tbtn{flex:1;height:32px}
.login-error{color:#ff8a80;min-height:16px;margin:0;font-size:12px}

/* ---------- catálogo de los manuales en la paleta ---------- */
.cat-box>h4{color:var(--accent)}
.lib-item.cat-type{background:#f7f9fc}
.cat-count{
  font-size:9px;color:#fff;background:var(--accent);border-radius:9px;
  padding:1px 6px;margin-top:2px;font-weight:600;
}
.cat-back{
  width:100%;justify-content:flex-start;border:1px solid var(--line);
  margin-bottom:6px;height:28px;
}
.cat-head{
  font-size:11px;color:var(--fg-dim);text-transform:uppercase;letter-spacing:.5px;
  padding:0 4px 6px;
}

/* ---------- edición de texto sobre el lienzo ---------- */
.inline-edit{
  position:absolute;z-index:20;margin:0;padding:1px 3px;resize:none;
  font-family:'Courier New','DejaVu Sans Mono',monospace;line-height:1.2;
  color:#111418;background:#fff;border:1px solid var(--accent);border-radius:3px;
  box-shadow:0 0 0 3px #3d9bff33;outline:none;letter-spacing:.8px;
}