:root{
  --side:#16263a; --side2:#1f3550; --side-text:#d6e0ea; --side-muted:#8ea3b8;
  --bg:#f3f5f8; --panel:#ffffff; --ink:#1b2632; --muted:#5b6b7b; --line:#dde3ea; --line2:#eef1f5;
  --accent:#1d6a88; --accent-d:#155269; --accent-soft:#e3f0f5;
  --ok:#0b7a4b; --ok-soft:#e5f5ec; --err:#b42318; --err-soft:#fdecea; --warn:#a15c07; --warn-soft:#fdf3e1;
  --radius:6px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:13.5px/1.45 "Segoe UI",Tahoma,system-ui,sans-serif}
a{color:var(--accent);text-decoration:none} a:hover{text-decoration:underline}
.app{display:grid;grid-template-columns:232px 1fr;min-height:100vh}
/* sidebar */
.side{background:var(--side);color:var(--side-text);padding:14px 0 24px;position:sticky;top:0;height:100vh;overflow-y:auto}
.side .brand{padding:0 16px 12px;border-bottom:1px solid #2a4260;margin-bottom:6px}
.side .brand b{display:block;font-size:15px;color:#fff;letter-spacing:.01em}
.side .brand span{font-size:11.5px;color:var(--side-muted)}
.side h6{margin:14px 16px 4px;font-size:10.5px;letter-spacing:.09em;text-transform:uppercase;color:var(--side-muted);font-weight:600}
.side a{display:flex;justify-content:space-between;align-items:center;padding:5px 16px;color:var(--side-text);font-size:13px}
.side a:hover{background:var(--side2);text-decoration:none;color:#fff}
.side a.on{background:var(--accent);color:#fff}
.side a .plus{color:var(--side-muted);font-weight:600;padding:0 4px;border-radius:4px}
.side a .plus:hover{background:#ffffff22;color:#fff}
/* top bar */
.top{display:flex;align-items:center;gap:14px;padding:9px 22px;background:var(--panel);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.top .co{display:flex;align-items:center;gap:8px}
.top .co select{font-weight:600}
.top .fy{color:var(--muted);font-size:12.5px}
.top .sp{flex:1}
.top .me{color:var(--muted);font-size:12.5px}
.app > div{min-width:0}
main{padding:18px 22px 40px;min-width:0}
.codecell{max-width:300px;overflow-wrap:anywhere;font-family:Consolas,"Cascadia Mono",monospace;font-size:12.5px}
h1{font-size:19px;margin:0 0 2px;font-weight:600}
.sub{color:var(--muted);margin:0 0 14px}
.head{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.head .actions{display:flex;gap:8px;flex-wrap:wrap}
/* panels */
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;margin-bottom:14px}
.panel h2{font-size:14px;margin:0 0 10px;font-weight:600}
.grid{display:grid;gap:14px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))} .g3{grid-template-columns:repeat(3,minmax(0,1fr))} .g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px}
.stat .l{color:var(--muted);font-size:12px} .stat .v{font-size:19px;font-weight:600;font-variant-numeric:tabular-nums;margin-top:2px}
/* forms */
label{display:block;font-size:12px;color:var(--muted);margin:0 0 3px;font-weight:500}
input,select,textarea{font:inherit;color:var(--ink);border:1px solid #c9d2dc;border-radius:5px;padding:6px 8px;background:#fff;width:100%}
input:focus,select:focus,textarea:focus{outline:2px solid #1d6a8855;border-color:var(--accent)}
input[type=checkbox]{width:auto;margin:0 6px 0 0;vertical-align:-2px}
textarea{min-height:58px}
.fields{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px 14px}
.fields .wide{grid-column:span 2} .fields .full{grid-column:1/-1}
.check{display:flex;align-items:center;font-size:13px;color:var(--ink);margin-top:20px}
.help{font-size:11.5px;color:var(--muted);margin-top:3px}
.bad{border-color:var(--err)!important;background:var(--err-soft)!important}
.num{text-align:right;font-variant-numeric:tabular-nums}
/* buttons */
.btn{display:inline-flex;align-items:center;gap:6px;border:1px solid #c3ccd6;background:#fff;color:var(--ink);border-radius:5px;padding:6px 12px;font:inherit;font-weight:500;cursor:pointer;text-decoration:none;white-space:nowrap}
.btn:hover{background:#f1f4f7;text-decoration:none}
.btn.pri{background:var(--accent);border-color:var(--accent);color:#fff} .btn.pri:hover{background:var(--accent-d)}
.btn.danger{color:var(--err);border-color:#e7b4ae} .btn.danger:hover{background:var(--err-soft)}
.btn.sm{padding:3px 8px;font-size:12px}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.bar{display:flex;gap:8px;flex-wrap:wrap;align-items:flex-end;margin-bottom:12px}
.bar > div{min-width:130px}
/* tables */
.tbl-wrap{overflow-x:auto;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius)}
table{border-collapse:collapse;width:100%}
th,td{padding:6px 9px;border-bottom:1px solid var(--line2);text-align:left;vertical-align:top}
th{background:#f7f9fb;font-size:12px;color:var(--muted);font-weight:600;position:sticky;top:0;white-space:nowrap}
tbody tr:hover td{background:#fafcfd}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
tr.grp td{font-weight:600;background:#fbfcfd}
tr.tot td{font-weight:700;border-top:2px solid var(--line);background:#f7f9fb}
tr.void td{color:#98a2ad;text-decoration:line-through}
.ind{display:inline-block}
.tag{display:inline-block;font-size:11px;padding:1px 7px;border-radius:10px;background:var(--line2);color:var(--muted);font-weight:600;white-space:nowrap}
.tag.ok{background:var(--ok-soft);color:var(--ok)} .tag.err{background:var(--err-soft);color:var(--err)} .tag.warn{background:var(--warn-soft);color:var(--warn)} .tag.acc{background:var(--accent-soft);color:var(--accent-d)}
.muted{color:var(--muted)} .code{font-family:Consolas,"Cascadia Mono",monospace;font-size:12.5px}
/* flash */
.flash{padding:9px 12px;border-radius:5px;margin-bottom:12px;border:1px solid}
.flash.ok{background:var(--ok-soft);border-color:#b7e2c9;color:#064d31}
.flash.error{background:var(--err-soft);border-color:#f2c1bb;color:#7a1a12}
/* entry grids */
.lines td{padding:4px 5px;vertical-align:middle}
.lines input,.lines select{padding:5px 6px}
.lines .rm{border:0;background:none;color:#9aa6b2;cursor:pointer;font-size:16px;padding:2px 6px}
.lines .rm:hover{color:var(--err)}
.totals{display:flex;justify-content:flex-end;gap:22px;padding:10px 12px;font-variant-numeric:tabular-nums}
.totals b{font-size:15px}
.diff-bad{color:var(--err);font-weight:700} .diff-ok{color:var(--ok);font-weight:700}
.savebar{display:flex;gap:8px;justify-content:flex-end;align-items:center;margin-top:12px}
/* login */
.center{min-height:100vh;display:grid;place-items:center;padding:20px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:26px 28px;width:min(420px,100%);box-shadow:0 10px 30px #16263a14}
.card h1{margin-bottom:4px}
/* documents (print) */
.doc{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 26px}
.doc .dh{display:flex;justify-content:space-between;gap:20px;border-bottom:2px solid var(--ink);padding-bottom:10px;margin-bottom:12px}
.doc .dh h2{margin:0;font-size:18px}
.doc .title{font-size:16px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;text-align:right}
.doc .meta{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 24px;margin-bottom:12px}
.doc .meta div span{color:var(--muted);display:inline-block;min-width:110px}
.doc .sign{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-top:48px;text-align:center;color:var(--muted)}
.doc .sign div{border-top:1px solid #888;padding-top:4px}
.tree-toggle{cursor:pointer;color:var(--muted);display:inline-block;width:14px}
@media (max-width:900px){.app{grid-template-columns:1fr}.side{position:static;height:auto}.g2,.g3,.g4{grid-template-columns:1fr}}
@media print{
  .side,.top,.noprint,.head .actions,.flash{display:none!important}
  .app{display:block} main{padding:0} body{background:#fff}
  .doc,.panel,.tbl-wrap{border:0;padding:0}
  th{position:static}
  a{color:inherit}
}