:root{
  --bg:#f3f5f9; --card:#fff; --ink:#18212f; --muted:#6b7686; --line:#e4e8ef;
  --pri:#1f6feb; --pri-ink:#fff; --pri-soft:#e8f0fe;
  --green:#14915b; --red:#d63c3c; --orange:#e07b12; --purple:#7c4ddb; --teal:#0e9488; --gray:#7a8494; --blue:#1f6feb;
  --r:12px; --shadow:0 1px 2px rgba(16,24,40,.05),0 1px 3px rgba(16,24,40,.06);
}
*{box-sizing:border-box}
html,body{margin:0}
body{font-family:Vazirmatn,"Noto Sans Arabic",Tahoma,sans-serif;background:var(--bg);color:var(--ink);font-size:15px;line-height:1.6}
a{color:var(--pri);text-decoration:none}
.ic{width:20px;height:20px;flex:none}
h1,h2,h3{margin:0 0 .6em;line-height:1.3}
h3{font-size:16px}
.muted{color:var(--muted)}
code{background:#eef1f6;padding:1px 6px;border-radius:6px;direction:ltr;display:inline-block}

/* ---------- shell ---------- */
.side{position:fixed;inset:0 0 0 auto;width:250px;background:var(--card);border-left:1px solid var(--line);display:flex;flex-direction:column;z-index:30;transition:transform .2s}
.brand{display:flex;gap:10px;align-items:center;padding:18px 16px;border-bottom:1px solid var(--line)}
.brand b{display:block;font-size:15px}.brand small{color:var(--muted);font-size:12px}
.logo{width:40px;height:40px;border-radius:10px;background:var(--pri);color:#fff;display:grid;place-items:center;font-weight:700;font-size:20px}
.logo.big{width:56px;height:56px;font-size:28px;margin:0 auto 10px}
.side nav{flex:1;overflow:auto;padding:10px}
.side nav a{display:flex;gap:10px;align-items:center;padding:9px 12px;border-radius:9px;color:var(--ink);font-weight:500;margin-bottom:2px}
.side nav a:hover{background:#f2f4f8}
.side nav a.on{background:var(--pri-soft);color:var(--pri)}
.me{display:flex;gap:10px;align-items:center;padding:12px 16px;border-top:1px solid var(--line)}
.me div{flex:1}.me b{display:block;font-size:14px}.me small{color:var(--muted);font-size:12px}
.me .out{color:var(--red)}
.main{margin-right:250px;min-height:100vh}
.top{display:flex;align-items:center;gap:12px;padding:14px 24px;background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.top h1{font-size:19px;margin:0;flex:1}
.top-r{display:flex;gap:10px;align-items:center}
.date{color:var(--muted);font-size:13px;direction:ltr}
.pill{display:inline-flex;gap:6px;align-items:center;padding:5px 12px;border-radius:99px;background:#fdecec;color:var(--red);font-size:13px;font-weight:600}
.pill .ic{width:16px;height:16px}
.pill-on{background:#e3f6ec;color:var(--green)}
.burger{display:none;background:none;border:0;padding:4px;cursor:pointer;color:var(--ink)}
.content{padding:22px 24px 40px;max-width:1400px}
.scrim{display:none}

/* ---------- components ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:18px}
.card + .card{margin-top:16px}
.card-h{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.card-h h3{margin:0}
.grid{display:grid;gap:16px}
.grid>*{min-width:0}
.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))}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.stat{display:flex;gap:14px;align-items:center}
.stat .si{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;flex:none}
.stat .si .ic{width:24px;height:24px}
.stat small{color:var(--muted);display:block;font-size:13px}
.stat b{font-size:22px;font-weight:700}
.si-blue{background:#e8f0fe;color:var(--blue)}.si-green{background:#e3f6ec;color:var(--green)}
.si-red{background:#fdecec;color:var(--red)}.si-orange{background:#fdf0e1;color:var(--orange)}
.si-purple{background:#efe9fc;color:var(--purple)}.si-teal{background:#e0f4f2;color:var(--teal)}

.btn{display:inline-flex;gap:6px;align-items:center;justify-content:center;background:var(--pri);color:var(--pri-ink);border:0;border-radius:9px;padding:9px 16px;font:inherit;font-weight:600;cursor:pointer;white-space:nowrap}
.btn:hover{filter:brightness(.95)}
.btn .ic{width:18px;height:18px}
.btn.sm{padding:5px 10px;font-size:13px}
.btn.ghost{background:#eef1f6;color:var(--ink)}
.btn.green{background:var(--green)}.btn.red{background:var(--red)}.btn.orange{background:var(--orange)}
.btn.wide{width:100%;margin-top:8px;padding:11px}
.actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}

label{display:block;font-size:13px;color:var(--muted);font-weight:500;margin-bottom:10px}
input,select,textarea{display:block;width:100%;margin-top:4px;padding:9px 11px;border:1px solid var(--line);border-radius:9px;font:inherit;color:var(--ink);background:#fff}
input:focus,select:focus,textarea:focus{outline:2px solid var(--pri-soft);border-color:var(--pri)}
textarea{min-height:80px;resize:vertical}
input[type=checkbox]{display:inline;width:auto;margin:0 0 0 6px}
.inline-form{display:flex;gap:8px;flex-wrap:wrap;align-items:flex-end}
.inline-form label{margin:0;min-width:140px}

.tbl-wrap{overflow-x:auto;margin:0 -18px;padding:0 18px}
table{width:100%;border-collapse:collapse;font-size:14px}
th{text-align:right;font-weight:600;color:var(--muted);font-size:13px;padding:9px 10px;border-bottom:1px solid var(--line);white-space:nowrap;background:#fafbfd}
td{padding:10px;border-bottom:1px solid var(--line);vertical-align:middle}
tr:last-child td{border-bottom:0}
tbody tr:hover{background:#fafbfd}
td.num,th.num{text-align:left;direction:ltr;white-space:nowrap;font-variant-numeric:tabular-nums}
tfoot td{font-weight:700;background:#fafbfd}

.badge{display:inline-block;padding:2px 10px;border-radius:99px;font-size:12px;font-weight:600;white-space:nowrap}
.b-blue{background:#e8f0fe;color:var(--blue)}.b-purple{background:#efe9fc;color:var(--purple)}
.b-orange{background:#fdf0e1;color:var(--orange)}.b-teal{background:#e0f4f2;color:var(--teal)}
.b-green{background:#e3f6ec;color:var(--green)}.b-gray{background:#eef0f3;color:var(--gray)}.b-red{background:#fdecec;color:var(--red)}
.red{color:var(--red)}.green{color:var(--green)}

.flash{padding:10px 14px;border-radius:9px;margin-bottom:14px;font-weight:500}
.flash-ok{background:#e3f6ec;color:#0c6b41}.flash-err{background:#fdecec;color:#a82828}
.empty{text-align:center;padding:36px 10px;color:var(--muted)}
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:14px}
.tabs a{padding:6px 14px;border-radius:99px;background:#fff;border:1px solid var(--line);color:var(--ink);font-size:14px}
.tabs a.on{background:var(--pri);border-color:var(--pri);color:#fff}
.tabs a span{opacity:.7;margin-right:4px}
.kv{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;font-size:14px}
.kv dt{color:var(--muted)}.kv dd{margin:0;font-weight:500}

/* bars */
.bars{display:flex;align-items:flex-end;gap:10px;height:180px;padding-top:10px}
.bars .bar{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%;gap:6px;font-size:12px;color:var(--muted)}
.bars .bar i{display:block;width:100%;max-width:38px;background:var(--pri);border-radius:6px 6px 2px 2px;min-height:2px}
.bars .bar em{font-style:normal;color:var(--ink);font-size:11px;direction:ltr}
.hbar{display:flex;align-items:center;gap:10px;margin-bottom:8px;font-size:14px}
.hbar span{width:110px;flex:none;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hbar div{flex:1;background:#eef1f6;border-radius:99px;height:10px;overflow:hidden}
.hbar div i{display:block;height:100%;background:var(--orange);border-radius:99px}
.hbar b{width:40px;text-align:left;font-size:13px}

/* POS */
.pos{display:grid;grid-template-columns:1fr 400px;gap:16px;align-items:start}
.pgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.pitem{border:1px solid var(--line);border-radius:10px;padding:12px;background:#fff;cursor:pointer;text-align:right;font:inherit}
.pitem:hover{border-color:var(--pri)}
.pitem b{display:block;font-size:14px}.pitem small{color:var(--muted)}
.pitem .pr{color:var(--pri);font-weight:700;margin-top:4px;display:block}
.cart-row{display:grid;grid-template-columns:1fr 70px 90px 28px;gap:6px;align-items:center;padding:6px 0;border-bottom:1px solid var(--line);font-size:14px}
.cart-row input{margin:0;padding:5px 7px}
.cart-row button{background:none;border:0;color:var(--red);cursor:pointer;font-size:18px}
.total-line{display:flex;justify-content:space-between;padding:6px 0;font-size:15px}
.total-line.big{font-size:20px;font-weight:700;border-top:2px solid var(--line);margin-top:6px;padding-top:10px}

/* login */
.login-body{display:grid;place-items:center;min-height:100vh;padding:16px;background:linear-gradient(135deg,#e8f0fe,#f3f5f9)}
.login{width:100%;max-width:380px;text-align:center}
.login form,.login label{text-align:right}
.login h1{font-size:22px;margin-bottom:2px}

/* invoice */
.invoice{max-width:800px;margin:20px auto;background:#fff;padding:32px;border-radius:12px;border:1px solid var(--line)}
.inv-h{display:flex;justify-content:space-between;align-items:flex-start;border-bottom:2px solid var(--ink);padding-bottom:14px;margin-bottom:16px}
.inv-h h1{font-size:24px;margin:0}
.noprint{margin:16px auto;max-width:800px;display:flex;gap:8px}

@media (max-width:1100px){.g4{grid-template-columns:repeat(2,minmax(0,1fr))}.pos{grid-template-columns:1fr}}
@media (max-width:860px){
  .side{transform:translateX(100%)}
  .side.open{transform:none;box-shadow:-8px 0 30px rgba(0,0,0,.15)}
  .side.open ~ .scrim{display:block}
  .scrim{position:fixed;inset:0;background:rgba(0,0,0,.3);z-index:20}
  .main{margin-right:0}
  .burger{display:block}
  .content{padding:16px}
  .top{padding:12px 16px}
  .g2,.g3{grid-template-columns:1fr}
  .grid2,.grid3{grid-template-columns:1fr}
  .date{display:none}
}
@media (max-width:520px){.g4{grid-template-columns:1fr}}
@media print{
  body{background:#fff}
  .noprint,.side,.top{display:none!important}
  .invoice{border:0;margin:0;padding:0;max-width:none}
}
.bars .bar{min-width:0;white-space:nowrap}
.bars .bar span{max-width:100%;overflow:hidden;text-overflow:ellipsis}
@media (max-width:520px){.bars{gap:4px}.bars .bar{font-size:10px}}
.btn.green,.btn.red,.btn.orange{color:#fff}
.grid>.card+.card{margin-top:0}

/* ---------- formal documents ---------- */
.nav-g{font-size:11px;font-weight:700;color:var(--muted);padding:12px 12px 4px;letter-spacing:.02em}
.doc-body{background:#e9edf3}
.invoice{max-width:820px;margin:16px auto 40px;background:#fff;padding:36px 40px;border-radius:6px;border:1px solid var(--line);box-shadow:0 4px 24px rgba(16,24,40,.08)}
.inv-h{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;border-bottom:3px solid var(--pri);padding-bottom:18px;margin-bottom:18px}
.inv-shop{display:flex;gap:14px;align-items:flex-start}
.inv-shop .logo{width:56px;height:56px;font-size:28px}
.inv-shop h1{font-size:22px;margin:0 0 2px}
.inv-shop .muted{font-size:13px}
.inv-meta{min-width:220px}
.inv-title{background:var(--pri);color:#fff;font-weight:700;font-size:18px;padding:6px 14px;border-radius:6px;text-align:center;margin-bottom:8px}
.inv-meta table td{padding:3px 6px;border:0;font-size:14px}
.inv-meta table td:first-child{color:var(--muted)}
.inv-to{display:flex;justify-content:space-between;gap:16px;background:#f6f8fb;border-radius:8px;padding:12px 16px;margin-bottom:18px}
.inv-to small{display:block}
.inv-tbl{margin-bottom:16px}
.inv-tbl th{background:#f1f4f9;color:var(--ink)}
.inv-tbl td,.inv-tbl th{border:1px solid var(--line)}
.inv-bottom{display:flex;justify-content:space-between;gap:24px;align-items:flex-start}
.inv-notes{flex:1;font-size:14px}
.inv-sum{width:320px;flex:none}
.inv-sum td{padding:7px 10px}
.inv-sum tr.grand td{background:var(--pri);color:#fff;font-weight:700;font-size:16px}
.inv-sign{display:flex;justify-content:space-between;margin-top:56px;gap:40px}
.inv-sign div{flex:1;border-top:1px dashed #9aa3b2;padding-top:6px;text-align:center;color:var(--muted);font-size:13px}
.inv-foot{text-align:center;color:var(--muted);margin-top:24px;font-size:13px}
@media (max-width:640px){.invoice{padding:18px}.inv-h,.inv-bottom,.inv-to{flex-direction:column}.inv-sum{width:100%}}
@media print{.doc-body{background:#fff}.invoice{box-shadow:none;border:0;margin:0;padding:0}.inv-title,.inv-sum tr.grand td{-webkit-print-color-adjust:exact;print-color-adjust:exact}}
.acc-tree td.l1{font-weight:700;background:#fafbfd}
.acc-tree td.l2{padding-right:28px}
.acc-tree td.l3{padding-right:48px}
.bal-ok{color:var(--green);font-weight:700}.bal-bad{color:var(--red);font-weight:700}
/* line-item editors stack into cards on phones */
@media (max-width:640px){
  table.lines thead{display:none}
  table.lines tbody tr{display:grid;grid-template-columns:1fr 1fr 1fr;gap:6px;padding:12px 0;border-bottom:1px solid var(--line)}
  table.lines td{border:0;padding:0}
  table.lines td:nth-child(1),table.lines td:nth-child(2){grid-column:1/-1}
  table.lines td.lt{align-self:center;font-weight:700}
  table.lines td:last-child{grid-column:1/-1;text-align:left}
  table.lines td input,table.lines td select{margin:0}
}