/* ForgeSheet v1.0 · FORGE */
:root{
  --acero:#23292F; --acero-2:#313941; --acero-txt:#E9ECEF; --acero-dim:#9AA4AE;
  --brasa:#E8590C; --brasa-ink:#C2410C; --brasa-soft:rgba(232,89,12,.11); --brasa-line:rgba(232,89,12,.35);
  --canvas:#FFFFFF; --chrome:#F4F5F7; --ink:#1B1F23; --muted:#66707B; --line:#E1E4E8; --grid:#E7E9EC;
  --head:#F7F8F9; --head-hl:#FCEDE4; --hover:#E9ECEF; --bd:#3B434C; --err:#C92A2A; --ok:#2B8A3E; --pick:#1971C2;
  --shadow:0 10px 30px rgba(20,24,28,.16),0 2px 6px rgba(20,24,28,.08);
  --font:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --z:1;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --acero:#14181C; --acero-2:#22282E;
    --brasa:#FF7A2E; --brasa-ink:#FF9152; --brasa-soft:rgba(255,122,46,.15); --brasa-line:rgba(255,122,46,.4);
    --canvas:#171A1E; --chrome:#1E2227; --ink:#E6E8EB; --muted:#9AA3AD; --line:#2D3339; --grid:#262B31;
    --head:#1C2025; --head-hl:#3A2618; --hover:#2A3036; --bd:#C5CBD2; --err:#FF6B6B; --ok:#51CF66; --pick:#4DABF7;
    --shadow:0 10px 30px rgba(0,0,0,.5),0 2px 6px rgba(0,0,0,.4);
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --acero:#14181C; --acero-2:#22282E;
  --brasa:#FF7A2E; --brasa-ink:#FF9152; --brasa-soft:rgba(255,122,46,.15); --brasa-line:rgba(255,122,46,.4);
  --canvas:#171A1E; --chrome:#1E2227; --ink:#E6E8EB; --muted:#9AA3AD; --line:#2D3339; --grid:#262B31;
  --head:#1C2025; --head-hl:#3A2618; --hover:#2A3036; --bd:#C5CBD2; --err:#FF6B6B; --ok:#51CF66; --pick:#4DABF7;
  --shadow:0 10px 30px rgba(0,0,0,.5),0 2px 6px rgba(0,0,0,.4);
  color-scheme:dark;
}

*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{
  display:flex;flex-direction:column;overflow:hidden;
  font:400 14px/1.4 var(--font);color:var(--ink);background:var(--chrome);
  padding-left:env(safe-area-inset-left,0px);padding-right:env(safe-area-inset-right,0px);
  -webkit-tap-highlight-color:transparent;
}
button{font:inherit;color:inherit}
button:focus-visible,input:focus-visible{outline:2px solid var(--brasa);outline-offset:1px}
[hidden]{display:none!important}
svg.i{width:18px;height:18px;flex:0 0 auto;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* ---------- cabecera ---------- */
#hdr{
  display:flex;align-items:center;gap:6px;flex:0 0 auto;
  padding:calc(env(safe-area-inset-top,0px) + 6px) 10px 6px;
  background:var(--acero);color:var(--acero-txt);
}
.mark{width:28px;height:28px;flex:0 0 auto}
.mark svg{width:100%;height:100%;display:block}
.hbtn{
  height:36px;min-width:36px;padding:0 10px;border:0;border-radius:8px;background:transparent;color:var(--acero-txt);
  display:inline-flex;align-items:center;gap:6px;cursor:pointer;font-weight:500;white-space:nowrap
}
.hbtn:hover{background:var(--acero-2)}
.hbtn.ico{padding:0}
.hbtn.ico{justify-content:center}
.hbtn.title{font-weight:600;font-size:15px;max-width:34vw;overflow:hidden;text-overflow:ellipsis;display:block;line-height:36px}
.spacer{flex:1}
.save{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--acero-dim);margin-right:4px}
.save i{width:7px;height:7px;border-radius:50%;background:var(--ok)}
.save.busy i{background:var(--brasa)}

/* ---------- pestañas y cinta ---------- */
#tabs{display:flex;gap:2px;padding:0 8px;background:var(--chrome);border-bottom:1px solid var(--line);flex:0 0 auto;overflow-x:auto;scrollbar-width:none}
#tabs::-webkit-scrollbar{display:none}
#tabs button{
  border:0;background:none;padding:9px 12px 7px;font-weight:500;color:var(--muted);cursor:pointer;
  border-bottom:2px solid transparent;white-space:nowrap
}
#tabs button[aria-selected="true"]{color:var(--ink);border-bottom-color:var(--brasa)}
#ribbon{background:var(--canvas);border-bottom:1px solid var(--line);flex:0 0 auto}
.panel{display:flex;align-items:center;overflow-x:auto;padding:4px 4px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.panel::-webkit-scrollbar{display:none}
.grp{display:flex;align-items:center;gap:2px;padding:0 6px;border-right:1px solid var(--line);flex:0 0 auto}
.grp:last-child{border-right:0}
.rb{
  height:38px;min-width:38px;padding:0 8px;border:1px solid transparent;border-radius:7px;background:none;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;gap:6px;color:var(--ink);font-size:13px;font-weight:500;white-space:nowrap;flex:0 0 auto
}
.rb:hover{background:var(--hover)}
.rb.on{background:var(--brasa-soft);color:var(--brasa-ink);border-color:var(--brasa-line)}
.rb.txt b,.rb.txt u,.rb.txt s{font-size:16px}
.rb .ser{font-family:Georgia,"Times New Roman",serif;font-size:17px}
.rb .mini{font-size:13px;font-weight:600;letter-spacing:-.01em}
.rb .mini sub{font-size:10px;vertical-align:baseline;margin-left:1px}
.rb.drop::after{content:"";width:6px;height:6px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg) translate(-2px,-2px);opacity:.6}
.rb.wide{min-width:104px;justify-content:space-between}
.cicon{position:relative;font-weight:700;font-size:16px;line-height:1;padding-bottom:5px}
.cicon i{position:absolute;left:-2px;right:-2px;bottom:0;height:4px;border-radius:1px;background:var(--brasa)}
.fbar{position:absolute;width:14px;height:4px;border-radius:1px;transform:translate(-3px,11px);background:#FFF3BF}
.rb[data-cmd="fillColor"]{position:relative}

/* ---------- barra de fórmulas ---------- */
#fbar{display:flex;align-items:center;gap:6px;padding:6px 8px;background:var(--canvas);border-bottom:1px solid var(--line);flex:0 0 auto}
#nameBox{
  width:92px;height:36px;padding:0 8px;border:1px solid var(--line);border-radius:7px;background:var(--chrome);color:var(--ink);
  font:600 13px var(--font);text-align:center
}
#fxBtn{
  height:36px;width:38px;border:0;background:none;border-radius:7px;cursor:pointer;color:var(--muted);
  font:italic 600 15px Georgia,"Times New Roman",serif
}
#fxBtn:hover{background:var(--hover);color:var(--brasa)}
#formula{
  flex:1;min-width:0;height:36px;padding:0 12px;border:1px solid var(--line);border-radius:7px;background:var(--canvas);color:var(--ink);
  font:400 15px var(--font)
}
#formula:focus{border-color:var(--brasa);outline:none;box-shadow:0 0 0 3px var(--brasa-soft)}

#hint{display:flex;align-items:center;gap:12px;padding:8px 12px;background:var(--head-hl);border-bottom:1px solid var(--brasa-line);flex:0 0 auto}
#hint p{margin:0;flex:1;font-size:13px}
#hint button{border:0;background:var(--brasa);color:#fff;border-radius:7px;padding:7px 12px;font-weight:600;cursor:pointer}

/* ---------- cuadrícula ---------- */
#wrap{flex:1;min-height:0;overflow:auto;background:var(--canvas);-webkit-overflow-scrolling:touch;overscroll-behavior:contain;position:relative}
#sheet{
  position:relative;display:inline-block;min-width:100%;
  --rh:calc(34px * var(--z)); --hh:calc(28px * var(--z)); --rhw:calc(46px * var(--z)); --fs:calc(14px * var(--z)); --pad:calc(7px * var(--z));
}
#grid{border-collapse:separate;border-spacing:0;table-layout:fixed;font-size:var(--fs);font-variant-numeric:tabular-nums;color:var(--ink)}
#grid td{
  height:var(--rh);padding:0 var(--pad);background:var(--canvas);color:var(--ink);
  border-right:1px solid var(--grid);border-bottom:1px solid var(--grid);
  white-space:nowrap;overflow:hidden;text-overflow:clip;vertical-align:middle;cursor:cell
}
#grid td.n{text-align:right}
#grid td.b{text-align:center}
#grid td.e{text-align:center;color:var(--err);font-weight:600}
#grid td.ov{overflow:visible}
#grid td.wr{white-space:normal;word-break:break-word;line-height:1.3;padding-top:calc(4px*var(--z));padding-bottom:calc(4px*var(--z))}
#grid.nogrid td{border-color:transparent}
#grid th{
  background:var(--head);color:var(--muted);font-weight:500;font-size:calc(12px * var(--z));
  border-right:1px solid var(--line);border-bottom:1px solid var(--line);
  user-select:none;-webkit-user-select:none;padding:0;cursor:pointer
}
#grid thead th{position:sticky;top:0;z-index:4;height:var(--hh)}
#grid thead th.corner{left:0;z-index:7;cursor:pointer}
#grid tbody th{position:sticky;left:0;z-index:3;text-align:center}
#grid th.hl{background:var(--head-hl);color:var(--brasa-ink);font-weight:600}
#grid thead th{position:sticky}
.colh{position:relative;display:flex;align-items:center;justify-content:center;height:100%}
.grip{position:absolute;right:-7px;top:0;bottom:0;width:14px;cursor:col-resize;touch-action:none;z-index:1}
.grip::after{content:"";position:absolute;left:6px;top:25%;bottom:25%;width:2px;border-radius:1px;background:transparent}
th:hover .grip::after,.grip.active::after{background:var(--brasa)}

/* paneles inmovilizados */
#grid.fr tbody tr:first-child > td{position:sticky;top:var(--hh);z-index:2;border-bottom:2px solid var(--muted)}
#grid.fr tbody tr:first-child > th{top:var(--hh);z-index:5;border-bottom:2px solid var(--muted)}
#grid.fc tbody td:nth-child(2){position:sticky;left:var(--rhw);z-index:2;border-right:2px solid var(--muted)}
#grid.fc thead th:nth-child(2){left:var(--rhw);z-index:5}
#grid.fr.fc tbody tr:first-child > td:nth-child(2){z-index:3}

/* selección y edición */
#selBox{position:absolute;z-index:2;pointer-events:none;border:2px solid var(--brasa);border-radius:1px;transition:none}
#selBox.multi{background:var(--brasa-soft)}
#handle{position:absolute;z-index:6;width:34px;height:34px;margin:-17px 0 0 -17px;touch-action:none;cursor:crosshair}
#handle::after{content:"";position:absolute;left:10px;top:10px;width:14px;height:14px;border-radius:50%;background:var(--brasa);border:2.5px solid var(--canvas);box-shadow:0 1px 3px rgba(0,0,0,.3)}
#pickBox{position:absolute;z-index:2;pointer-events:none;border:2px dashed var(--pick);background:color-mix(in srgb,var(--pick) 10%,transparent)}
#copyBox{position:absolute;z-index:2;pointer-events:none;border:2px dashed var(--brasa);animation:march 1s steps(4) infinite}
@keyframes march{50%{border-color:var(--brasa-line)}}
@media (prefers-reduced-motion:reduce){#copyBox{animation:none}}
#editor{
  position:absolute;z-index:5;margin:0;border:2px solid var(--brasa);border-radius:1px;background:var(--canvas);color:var(--ink);
  font-family:var(--font);padding:0 calc(var(--pad) - 1px);outline:none;box-shadow:var(--shadow)
}

/* ---------- pie: hojas y estado ---------- */
#foot{
  display:flex;align-items:stretch;gap:0;background:var(--chrome);border-top:1px solid var(--line);flex:0 0 auto;
  padding-bottom:env(safe-area-inset-bottom,0px);min-height:42px
}
#sheetTabs{display:flex;overflow-x:auto;scrollbar-width:none;max-width:60%}
#sheetTabs::-webkit-scrollbar{display:none}
.stab{
  border:0;border-right:1px solid var(--line);background:none;padding:0 16px;height:42px;cursor:pointer;white-space:nowrap;color:var(--muted);font-weight:500;
  border-top:2px solid transparent
}
.stab[aria-selected="true"]{background:var(--canvas);color:var(--ink);border-top-color:var(--brasa);font-weight:600}
#addSheetBtn{border:0;background:none;width:42px;cursor:pointer;color:var(--muted);display:inline-flex;align-items:center;justify-content:center}
#addSheetBtn:hover{color:var(--brasa)}
#status{flex:1;display:flex;align-items:center;justify-content:flex-end;gap:16px;padding:0 14px;font-size:12.5px;color:var(--muted);white-space:nowrap;overflow:hidden}
#status b{color:var(--ink);font-weight:600}
#status .err{color:var(--err);white-space:normal;line-height:1.25}

/* ---------- autocompletado, menús, avisos ---------- */
#ac{
  position:fixed;z-index:50;min-width:260px;max-width:min(380px,92vw);background:var(--canvas);border:1px solid var(--line);
  border-radius:10px;box-shadow:var(--shadow);overflow:hidden
}
#ac .opt{display:block;width:100%;text-align:left;border:0;background:none;padding:9px 12px;cursor:pointer}
#ac .opt:first-child,#ac .opt:hover{background:var(--hover)}
#ac .opt b{font-weight:600}
#ac .opt span{display:block;font-size:12px;color:var(--muted)}
#ac .sig{padding:9px 12px;font-size:13px}
#ac .sig em{font-style:normal;color:var(--muted)}

#pop{
  position:fixed;z-index:60;min-width:200px;max-width:92vw;max-height:70vh;overflow:auto;background:var(--canvas);
  border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow);padding:6px
}
#pop .mi{
  display:flex;align-items:center;gap:10px;width:100%;border:0;background:none;padding:10px 12px;border-radius:7px;text-align:left;cursor:pointer;color:var(--ink)
}
#pop .mi:hover{background:var(--hover)}
#pop .mi.on{color:var(--brasa-ink);font-weight:600}
#pop .mi .k{margin-left:auto;font-size:12px;color:var(--muted)}
#pop .mi.danger{color:var(--err)}
#pop hr{border:0;border-top:1px solid var(--line);margin:6px 4px}
#pop .sws{display:grid;grid-template-columns:repeat(5,36px);gap:8px;padding:8px}
#pop .sw{width:36px;height:36px;border-radius:8px;border:1px solid var(--line);cursor:pointer;padding:0}
#pop .sw.on{outline:2px solid var(--brasa);outline-offset:2px}
#pop .swauto{grid-column:1 / -1;height:36px;border-radius:8px;border:1px solid var(--line);background:none;cursor:pointer;color:var(--ink)}

#toast{
  position:fixed;left:50%;bottom:calc(58px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);z-index:70;
  background:var(--acero);color:var(--acero-txt);padding:10px 16px;border-radius:9px;box-shadow:var(--shadow);font-size:13.5px;max-width:90vw
}

dialog{
  border:1px solid var(--line);border-radius:14px;padding:0;background:var(--canvas);color:var(--ink);box-shadow:var(--shadow);
  width:min(440px,94vw);max-height:84vh
}
dialog::backdrop{background:rgba(15,18,22,.45)}
dialog.floating{position:fixed;inset:auto 12px auto auto;top:calc(env(safe-area-inset-top,0px) + 150px);margin:0;width:min(360px,94vw)}
.dlg-h{display:flex;align-items:center;justify-content:space-between;padding:14px 16px 6px}
.dlg-h h2{margin:0;font-size:16px;font-weight:600}
.dlg-x{border:0;background:none;width:34px;height:34px;border-radius:8px;cursor:pointer;color:var(--muted);display:inline-flex;align-items:center;justify-content:center}
.dlg-x:hover{background:var(--hover)}
.dlg-b{padding:6px 16px 10px}
.dlg-b p{margin:0 0 10px;color:var(--muted)}
.dlg-b label{display:block;font-size:12.5px;color:var(--muted);margin:8px 0 4px}
.dlg-b input[type=text],.dlg-b input[type=search]{
  width:100%;height:40px;padding:0 12px;border:1px solid var(--line);border-radius:8px;background:var(--canvas);color:var(--ink);font:400 15px var(--font)
}
.dlg-b input:focus{border-color:var(--brasa);outline:none;box-shadow:0 0 0 3px var(--brasa-soft)}
.dlg-f{display:flex;gap:8px;justify-content:flex-end;padding:8px 16px 16px;flex-wrap:wrap}
.btn{height:38px;padding:0 14px;border-radius:8px;border:1px solid var(--line);background:var(--canvas);cursor:pointer;font-weight:500}
.btn:hover{background:var(--hover)}
.btn.pri{background:var(--brasa);border-color:var(--brasa);color:#fff}
.btn.pri:hover{background:var(--brasa-ink)}
.btn.dan{background:var(--err);border-color:var(--err);color:#fff}
.fnlist{max-height:52vh;overflow:auto;margin:8px -16px 0;border-top:1px solid var(--line)}
.fncat{padding:10px 16px 4px;font-size:12px;font-weight:600;color:var(--brasa-ink)}
.fnitem{display:block;width:100%;text-align:left;border:0;background:none;padding:8px 16px;cursor:pointer}
.fnitem:hover{background:var(--hover)}
.fnitem b{font-weight:600}
.fnitem code{font:12.5px var(--font);color:var(--muted);margin-left:6px}
.fnitem span{display:block;font-size:12.5px;color:var(--muted)}

/* ---------- pantallas táctiles y pequeñas ---------- */
@media (pointer:coarse){
  .rb{height:42px;min-width:42px}
  #tabs button{padding:11px 14px 9px}
}
@media (max-width:640px){
  .hide-sm{display:none}
  #fileBtn span{display:none}
  .hbtn.title{max-width:42vw;font-size:14px}
  #nameBox{width:66px}
  #fxBtn{width:32px}
  #formula{font-size:16px}
  #sheetTabs{max-width:55%}
  .stab{padding:0 12px}
  #status{gap:10px;padding:0 10px}
  #status .x{display:none}
}
@media print{
  #hdr,#tabs,#ribbon,#fbar,#foot,#hint,#selBox,#handle{display:none!important}
  body{overflow:visible;height:auto}
  #wrap{overflow:visible}
}