/* Sree Navaneetha Krishnan Agencies billing. Tokens and components follow docs/design/billing-design.html.
   Desktop: sidebar app. Phone (under 760px): bottom tab bar. */
:root{
  --bg:#f4f2ec; --card:#ffffff; --ink:#1d1b18; --mut:#6d685f; --line:#e3dfd5;
  --acc:#b4531f; --acc2:#fbede2; --onacc:#ffffff;
  --ok:#2d7a4b; --warn:#a86a00; --bad:#b3261e;
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans Tamil",sans-serif;
  --shadow:0 10px 30px rgba(0,0,0,.18); --shadow-strong:0 10px 30px rgba(0,0,0,.22);
  --scrim:rgba(0,0,0,.4); --onbad:#fff; --paper:#fff;
  --bn-h:58px;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#171613; --card:#211f1b; --ink:#efece5; --mut:#a29c90; --line:#37342d;
    --acc:#e0824a; --acc2:#35241a; --onacc:#1d1b18;
    --ok:#58b57a; --warn:#e0a63a; --bad:#f0776e; color-scheme:dark;
  }
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.45 var(--font)}
h1{font-size:18px;margin:0}
h2{font-size:17px;margin:0 0 12px}
h3{font-size:12px;margin:0 0 8px;color:var(--mut);text-transform:uppercase;letter-spacing:.05em}
a{color:var(--acc)}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--acc);outline-offset:1px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:-999px;top:0;background:var(--card);padding:8px 12px;z-index:100}
.skip:focus{left:8px}

/* shell */
.shell{display:flex;min-height:100vh;min-height:100dvh}
.nav{width:200px;background:var(--card);border-right:1px solid var(--line);padding:12px 10px;display:flex;flex-direction:column;gap:2px;flex:none;position:sticky;top:0;height:100vh;height:100dvh;overflow:auto}
.nav h4{margin:12px 8px 4px;font-size:11px;font-weight:600;color:var(--mut);text-transform:uppercase;letter-spacing:.06em}
.nav a,.nav button{display:block;text-align:left;border:0;background:none;padding:8px 10px;border-radius:8px;cursor:pointer;color:var(--ink);text-decoration:none;width:100%}
.nav a:hover,.nav button:hover{background:var(--bg)}
.nav a.on,.bn a.on{background:var(--acc2);color:var(--acc);font-weight:600}
.nav .navfoot{margin-top:auto;padding-top:12px;border-top:1px solid var(--line)}
.nav .who{font-size:12px;color:var(--mut);padding:4px 10px}
.brand{font-weight:700;padding:2px 8px 8px;color:var(--acc);line-height:1.25;text-decoration:none}
.brand small{display:block;color:var(--mut);font-weight:400}
.bn{display:none;position:fixed;left:0;right:0;bottom:0;z-index:40;border-top:1px solid var(--line);background:var(--card);padding:6px 6px calc(6px + env(safe-area-inset-bottom,0px));gap:4px}
.bn a{flex:1;text-align:center;padding:10px 2px;border-radius:10px;font-size:12px;color:var(--ink);text-decoration:none;min-height:40px}
main{flex:1;min-width:0;position:relative}
.pg{padding:18px;max-width:1120px}
.hd{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:10px;flex-wrap:wrap}.hd h2{margin:0}

/* cards and grids */
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px;margin-bottom:12px}
.card.bad{border-color:var(--bad);box-shadow:inset 4px 0 0 var(--bad)}.card.bad h3{color:var(--bad)}
.g2,.g3,.g4{display:grid;gap:10px}
.g2{grid-template-columns:1fr 1fr}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
.g2>*,.g3>*,.g4>*{min-width:0}
.mb{margin-bottom:12px}.mt{margin-top:10px}
.span2{grid-column:span 2}
label{display:block;font-size:12px;color:var(--mut);margin-bottom:3px}
input,select,textarea{width:100%;padding:9px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);font:inherit;min-height:40px}
textarea{min-height:70px;resize:vertical}
input[type=checkbox]{width:auto;min-height:0}
input[type=file]{padding:7px}
input[readonly]{opacity:.8}
input.is-invalid,select.is-invalid,.dpb.is-invalid{border-color:var(--bad)}
.hint{font-size:12px;color:var(--mut);margin-top:3px}
.auto{background:var(--acc2);color:var(--acc);padding:1px 6px;border-radius:6px;font-size:11px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:4px;border:1px solid var(--line);background:var(--card);padding:9px 14px;border-radius:9px;cursor:pointer;min-height:40px;color:var(--ink);text-decoration:none;font:inherit;white-space:nowrap}
.btn:hover{border-color:var(--mut)}
.btn.p{background:var(--acc);border-color:var(--acc);color:var(--onacc);font-weight:600}
.btn.danger{color:var(--bad);border-color:var(--bad)}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.btn.sm{padding:4px 10px;min-height:32px;font-size:12px}
.btn.block{width:100%}
.warn{border:1px dashed var(--warn);color:var(--warn);border-radius:8px;padding:8px 10px;font-size:12px;margin-top:8px}
.err{color:var(--bad);font-size:12px}
.errbox{border:1px solid var(--bad);color:var(--bad);border-radius:8px;padding:8px 10px;font-size:13px;margin-bottom:12px}
.errbox ul{margin:4px 0 0;padding-left:18px}
.chips{display:flex;gap:6px;flex-wrap:wrap;margin:10px 0}
.chip{display:inline-block;padding:5px 11px;border:1px solid var(--line);border-radius:999px;font-size:12px;background:transparent;cursor:pointer;color:var(--ink);text-decoration:none;min-height:30px}
.chip.on{background:var(--acc2);color:var(--acc);border-color:var(--acc)}
.chip[disabled]{opacity:.4;cursor:not-allowed}
.st{font-size:11px;padding:2px 8px;border-radius:999px;border:1px solid;justify-self:start;white-space:nowrap;display:inline-block}
.st.i{color:var(--ok)}.st.d{color:var(--warn)}.st.c{color:var(--bad)}.st.m{color:var(--mut)}
.act{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.act form{margin:0}
.stat{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px}
.stat b{display:block;font-size:19px;font-variant-numeric:tabular-nums}.stat span{color:var(--mut);font-size:12px}
.num,.row,.amt,.tot,td,th{font-variant-numeric:tabular-nums}
.r{text-align:right}
.muted{color:var(--mut)}
.ok{color:var(--ok)}.bad{color:var(--bad)}
.inactive{opacity:.6}
.search{display:flex;gap:8px}
.search input{flex:1}

/* list rows */
.tbl{padding:0;overflow:hidden}
.row{display:grid;gap:8px;align-items:center;padding:10px 12px;border-bottom:1px solid var(--line)}
.row:last-child{border-bottom:0}.row.h{font-size:12px;color:var(--mut)}
.row>*{min-width:0;overflow-wrap:anywhere}
.row.empty{display:block;color:var(--mut)}
.r-bills{grid-template-columns:minmax(124px,1.3fr) minmax(86px,.9fr) minmax(0,1.6fr) minmax(76px,1fr) minmax(72px,.8fr) minmax(0,1.9fr)}
.r-bills>:nth-child(-n+2){white-space:nowrap}
.r-purs{grid-template-columns:.9fr .9fr 1.6fr 1fr 1.1fr 1.3fr}
.r-cust{grid-template-columns:1.6fr 2fr 1.5fr .8fr 140px}
.r-prod{grid-template-columns:1.8fr .8fr .7fr .7fr .8fr 140px}
.r-stk{grid-template-columns:1.8fr 1fr 1fr 1.1fr 1fr}
.r-lot{grid-template-columns:.5fr 1.8fr 1fr .9fr .9fr .8fr}
.r-reg{grid-template-columns:.9fr 1.5fr .7fr 1.6fr 1fr .9fr .9fr .9fr 1fr}
.r-rep{grid-template-columns:1.8fr .6fr 1fr 1fr 1fr 1fr 1fr}
.r-stv{grid-template-columns:1.8fr .6fr 1fr 1fr 1fr}
.r-prf{grid-template-columns:1.4fr 1.5fr 1fr 1fr 1fr .6fr}
.r-mv{grid-template-columns:.9fr 1.8fr 1fr 1.2fr}
.r-low{grid-template-columns:1fr auto auto;padding:6px 0}
.r-usr{grid-template-columns:1.4fr 1fr 1fr}
.r-bk{grid-template-columns:1fr .6fr .7fr 2fr}
label.chk{display:flex;align-items:center;gap:8px;margin-top:6px;font-size:13px;color:var(--ink)}
.r-plot{grid-template-columns:.6fr 1.6fr 1fr 1fr 1fr}
details.stk{border-bottom:1px solid var(--line)}details.stk:last-child{border:0}
details.stk>summary{list-style:none;cursor:pointer;position:relative}
details.stk>summary::-webkit-details-marker{display:none}
details.stk>summary::before{content:"▸";position:absolute;left:11px;top:11px;color:var(--mut)}
details.stk[open]>summary::before{content:"▾"}
.r-stk.h,details.stk>summary.row{padding-left:30px}
.lots{background:var(--bg);border-top:1px dashed var(--line);padding:4px 0}
.lots .row{padding:7px 12px 7px 26px;font-size:13px}
details.cx{display:inline-block;position:relative}
details.cx>summary{list-style:none}
details.cx>summary::-webkit-details-marker{display:none}
.cxform{position:absolute;right:0;top:calc(100% + 4px);z-index:30;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:10px;width:260px;box-shadow:var(--shadow)}
.cxform label{margin-top:0}
.cxform .act{margin-top:8px}
.pager{display:flex;gap:8px;align-items:center;justify-content:center;margin:10px 0}

/* bill rows */
.ir{display:grid;grid-template-columns:2.2fr .8fr .9fr .9fr 1.1fr;gap:8px;align-items:start;padding:10px 0;border-bottom:1px solid var(--line)}
.ir:last-of-type{border-bottom:0}
.ih{display:grid;grid-template-columns:2.2fr .8fr .9fr .9fr 1.1fr;gap:8px;font-size:12px;color:var(--mut)}
.ih span:last-child{text-align:right}
.ir.pu,.ih.pu{grid-template-columns:2.2fr .9fr .9fr .9fr .7fr 1.1fr}
.ir>*{min-width:0}
.l{display:none}
.amt{font-weight:600;text-align:right;padding:10px 0}
.lotbox{grid-column:1/-1;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:10px}
.lotbox .top2{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,2fr);gap:10px;align-items:start}
.split{display:flex;gap:6px;flex-wrap:wrap;margin-top:4px}
.split span{border:1px solid var(--line);border-radius:8px;padding:3px 8px;font-size:12px;background:var(--card)}
.split b{color:var(--acc)}
.row .pos{color:var(--ok)}.row .neg{color:var(--bad)}
.cst{margin-top:6px;font-size:12px;color:var(--mut)}.cst b{color:var(--ink)}.cst .pf2{color:var(--ok)}.cst .pf2.neg{color:var(--bad)}
.irfoot{display:flex;justify-content:space-between;gap:8px;align-items:center;margin-top:8px;flex-wrap:wrap}
.tot{margin-left:auto;max-width:330px}
.tot div{display:flex;justify-content:space-between;padding:3px 0;gap:12px}
.tot .gt{font-size:18px;font-weight:700;border-top:1px solid var(--line);margin-top:4px;padding-top:8px}
.bar{position:sticky;bottom:0;z-index:20;margin:12px -18px -18px;background:var(--card);border-top:1px solid var(--line);padding:10px 18px;display:flex;gap:8px;align-items:center;justify-content:flex-end;flex-wrap:wrap}
.bar .t{margin-right:auto;font-weight:700;font-size:17px;font-variant-numeric:tabular-nums}
.custinfo{margin-top:8px}

/* date picker */
.dpb{width:100%;display:flex;justify-content:space-between;align-items:center;min-height:40px;padding:9px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);cursor:pointer;font-variant-numeric:tabular-nums;color:var(--ink)}
.dpq{display:flex;gap:6px;margin-top:6px;flex-wrap:wrap}
.dp-pop{position:absolute;z-index:50;background:var(--card);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-strong);padding:12px;width:292px}
.dp-bd{position:fixed;inset:0;background:var(--scrim);z-index:49}
.ph{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}
.ph button{border:1px solid var(--line);background:var(--bg);border-radius:8px;width:36px;height:36px;cursor:pointer;font-size:18px}
.ph button[disabled]{opacity:.35;cursor:not-allowed}
.cal{display:grid;grid-template-columns:repeat(7,1fr);gap:2px;text-align:center}
.cal .wd{font-size:11px;color:var(--mut);padding:4px 0}
.cal button{border:0;background:none;border-radius:8px;min-height:38px;cursor:pointer;font-variant-numeric:tabular-nums}
.cal button.today{outline:1px solid var(--acc)}
.cal button.sel{background:var(--acc);color:var(--onacc);font-weight:600}
.cal button:disabled{opacity:.3;cursor:not-allowed}
.pfoot{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:8px}

/* toast */
.toast{position:fixed;left:50%;bottom:18px;transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:10px 14px;border-radius:10px;font-size:13px;z-index:60;max-width:90%;text-align:center}
.toast.error{background:var(--bad);color:var(--onbad)}

/* dashboard */
.bars{display:flex;gap:8px;align-items:flex-end;height:110px;padding-top:6px}
.bars div{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:4px;height:100%;font-size:11px;color:var(--mut)}
.bars i{display:block;width:100%;border-radius:4px 4px 0 0;background:var(--acc);height:var(--h);min-height:2px;opacity:.85}
.bars div.td i{opacity:1}
.bars div.td{color:var(--ink);font-weight:600}
.mi{display:flex;flex-direction:column;gap:6px}
.mi a,.mi button{display:block;text-align:left;padding:12px;border:1px solid var(--line);background:var(--card);border-radius:10px;cursor:pointer;color:var(--ink);text-decoration:none;width:100%}
.mi form{margin:0}
.lg{max-width:360px;margin:60px auto}
.login-page{min-height:100vh;padding:16px}
.sc{overflow-x:auto}
.kv{display:grid;grid-template-columns:max-content 1fr;gap:4px 12px}
.kv dt{color:var(--mut);font-size:12px}.kv dd{margin:0}
.thumb{max-height:60px;max-width:180px;border:1px solid var(--line);border-radius:6px;background:var(--paper);padding:2px}
table.simple{width:100%;border-collapse:collapse}
table.simple th,table.simple td{border-bottom:1px solid var(--line);padding:6px 8px;text-align:left}
table.simple th{font-size:12px;color:var(--mut);font-weight:500}
@media (prefers-reduced-motion:no-preference){.chip,.btn,.dpb{transition:background .12s,border-color .12s}}

/* phone */
@media (max-width:759.98px){
  .nav{display:none}
  .bn{display:flex}
  main{padding-bottom:calc(var(--bn-h) + env(safe-area-inset-bottom,0px))}
  .pg{padding:12px}
  .g2,.g3{grid-template-columns:1fr}.g4{grid-template-columns:1fr 1fr}
  .span2{grid-column:auto}
  .row.h{display:none}
  .row{display:flex;flex-wrap:wrap;align-items:center;gap:4px 12px}
  .row>:first-child{flex:1 1 55%}
  .row .act,.row>.btn{flex-basis:auto}
  .row .act{flex-basis:100%}
  .row>[data-l]::before{content:attr(data-l) " ";color:var(--mut);font-size:11px}
  details.stk>summary.row>:first-child{flex:1 1 100%}
  .lots .row{padding-left:12px}
  .l{display:block;font-size:12px;color:var(--mut);margin-bottom:3px}
  .ih{display:none}
  .ir,.ir.pu{grid-template-columns:1fr 1fr;border:1px solid var(--line);border-radius:10px;padding:10px;margin-bottom:8px}
  .ir>:first-child,.ir>.lotbox{grid-column:1/-1}
  .amt{text-align:left;padding:0}
  .lotbox .top2{grid-template-columns:1fr}
  .tot{max-width:none}
  .bar{margin:12px -12px -12px;padding:8px 12px;bottom:calc(var(--bn-h) + env(safe-area-inset-bottom,0px))}
  .dp-pop{position:fixed;left:0!important;right:0;top:auto!important;bottom:0;width:auto;border-radius:18px 18px 0 0;padding:16px 16px calc(16px + env(safe-area-inset-bottom,0px))}
  .toast{bottom:calc(76px + env(safe-area-inset-bottom,0px))}
  .lg{margin:30px auto}
  .cxform{position:fixed;left:12px;right:12px;top:auto;bottom:calc(var(--bn-h) + 12px);width:auto}
  .kv{grid-template-columns:1fr}
}

/* utilities: keep last so they win over component rules */
.mt0{margin-top:0}.mt6{margin-top:6px}.mt8{margin-top:8px}.mt12{margin-top:12px}
.end{align-self:end}.sp10{height:10px}.sp12{height:12px}.sp14{height:14px}