:root{
  --bg:#f7f6f2;--surface:#ffffff;--ink:#1d2421;--muted:#6b7570;--line:#e6e4dc;--soft:#f0eee7;
  --brand:#12694b;--brand-ink:#ffffff;--brand-soft:#e3f1ea;--warn:#a15c00;--warn-soft:#fbefd9;--bad:#b3261e;--bad-soft:#fbe5e3;--ok:#1e7a46;
  --r:14px;--sh:0 1px 2px rgba(20,30,25,.04),0 8px 24px rgba(20,30,25,.05);
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#121614;--surface:#1b201d;--ink:#eceee9;--muted:#9aa49e;--line:#2a312d;--soft:#222824;
  --brand:#46b88a;--brand-ink:#0b1a13;--brand-soft:#1d3329;--warn:#e0a34a;--warn-soft:#33291a;--bad:#f08a82;--bad-soft:#3a2220;--ok:#6fd09a;--sh:none}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:400 16px/1.6 'Hind Siliguri','Anek Bangla',system-ui,sans-serif}
h1,h2,h3,h4{font-family:'Anek Bangla','Hind Siliguri',sans-serif;font-weight:600;margin:0;line-height:1.3}
button,input,select,textarea{font:inherit;color:inherit}
[hidden]{display:none!important}
.num{font-variant-numeric:tabular-nums}
small,.muted{color:var(--muted)}
small{font-size:13.5px}

/* shell */
#shell{display:grid;grid-template-columns:232px 1fr;min-height:100vh}
#nav{position:sticky;top:0;height:100vh;padding:32px 20px;border-right:1px solid var(--line);display:flex;flex-direction:column;gap:6px;background:var(--bg);overflow-y:auto}
.brand{font-family:'Anek Bangla';font-weight:700;font-size:20px;letter-spacing:.2px;margin:0 8px 28px}
.brand small{display:block;font-weight:400;font-size:12.5px;letter-spacing:0}
.nb{display:flex;align-items:center;gap:12px;padding:10px 12px;border:0;background:none;border-radius:10px;cursor:pointer;text-align:left;color:var(--muted);font-weight:500}
.nb:hover{background:var(--soft);color:var(--ink)}
.nb[aria-current="page"]{background:var(--brand-soft);color:var(--brand)}
.nb .cnt{margin-left:auto;font-size:12.5px;background:var(--brand);color:var(--brand-ink);border-radius:20px;padding:0 8px;min-width:22px;text-align:center}
.who{margin-top:auto;padding:12px 8px 0;border-top:1px solid var(--line);font-size:14px}
.who button{margin-top:8px}
main{padding:40px 48px 120px;max-width:1180px;width:100%}
#busy{position:fixed;top:0;left:0;height:3px;width:0;background:var(--brand);transition:width .6s ease;z-index:50}
#busy.on{width:70%}

.phead{margin-bottom:32px;display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap}
.phead h2{font-size:26px}
.phead .sub{margin:6px 0 0;color:var(--muted)}

/* controls */
.btn{border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:9px 16px;cursor:pointer;font-weight:500;transition:.15s}
.btn:hover{border-color:var(--muted)}
.btn.pri{background:var(--brand);border-color:var(--brand);color:var(--brand-ink)}
.btn.pri:hover{filter:brightness(1.06)}
.btn.bad{color:var(--bad);border-color:var(--bad-soft)}
.btn.sm{padding:5px 11px;font-size:14px}
.btn:disabled{opacity:.5;cursor:not-allowed}
.in{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--surface);outline:none}
.in:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
textarea.in{resize:vertical;min-height:72px}
label.f{display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--muted)}
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}
.row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.sp{justify-content:space-between}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{border:1px solid var(--line);background:var(--surface);padding:6px 14px;border-radius:20px;cursor:pointer;font-size:14.5px;color:var(--muted)}
.chip[aria-pressed="true"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.pane{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:28px;box-shadow:var(--sh)}
.pane h3{font-size:17px;margin-bottom:16px}
.stack>*+*{margin-top:20px}
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:16px;margin-bottom:28px}
.tile{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px 22px}
.tile small{display:block;margin-bottom:6px}
.tile b{font:600 24px 'Anek Bangla';display:block}
.tile em{display:block;font-style:normal;font-size:13px;color:var(--muted);margin-top:2px}
.badge{display:inline-block;padding:1px 10px;border-radius:20px;font-size:12.5px;background:var(--soft);color:var(--muted);white-space:nowrap}
.badge.ok{background:var(--brand-soft);color:var(--brand)}.badge.warn{background:var(--warn-soft);color:var(--warn)}.badge.bad{background:var(--bad-soft);color:var(--bad)}
.tags{display:flex;gap:6px;flex-wrap:wrap}
.empty{padding:56px 0;text-align:center;color:var(--muted)}
.foot{margin-top:28px;font-size:13.5px;color:var(--muted)}

/* table */
.tw{overflow-x:auto;padding:0}
table{width:100%;border-collapse:collapse;font-size:15px}
th{font-weight:500;color:var(--muted);text-align:left;padding:14px 18px;border-bottom:1px solid var(--line);font-size:13.5px;white-space:nowrap}
td{padding:14px 18px;border-bottom:1px solid var(--line);vertical-align:top}
tr:last-child td{border-bottom:0}
tbody tr.click{cursor:pointer}tbody tr.click:hover td{background:var(--soft)}
.r{text-align:right}
.linkb{border:0;background:none;color:var(--brand);cursor:pointer;padding:0;font-weight:500}

/* list rows */
.li{display:flex;gap:16px;align-items:center;justify-content:space-between;padding:16px 0;border-bottom:1px solid var(--line)}
.li:last-child{border-bottom:0}
.li .t{font-weight:500}
.li.click{cursor:pointer}.li.click:hover .t{color:var(--brand)}

/* POS */
.pos{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:28px;align-items:start}
.pos .cart{position:sticky;top:24px}
.plist{max-height:62vh;overflow:auto;margin-top:16px}
.pi{display:flex;justify-content:space-between;gap:12px;padding:12px 4px;border-bottom:1px solid var(--line);cursor:pointer;align-items:center}
.pi:hover{background:var(--soft)}
.pi .n{font-weight:500}.pi .low{color:var(--bad)}
.line{display:grid;grid-template-columns:1fr 64px 84px 76px 24px;gap:10px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}
.line .in{padding:7px 8px}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.seg button{border:0;background:var(--surface);padding:8px 18px;cursor:pointer;color:var(--muted)}
.seg button[aria-pressed="true"]{background:var(--brand);color:var(--brand-ink)}
.tot{display:flex;justify-content:space-between;padding:6px 0}
.tot.big{font:600 20px 'Anek Bangla';padding-top:14px;border-top:1px solid var(--line);margin-top:8px}
.warn-box{background:var(--warn-soft);color:var(--warn);padding:10px 14px;border-radius:10px;font-size:14px}
.note-box{background:var(--soft);padding:12px 16px;border-radius:10px;font-size:14.5px}

/* bars */
.bar{display:grid;grid-template-columns:minmax(80px,38%) 1fr auto;gap:12px;align-items:center;padding:6px 0;font-size:14.5px}
.bar i{display:block;height:8px;border-radius:8px;background:var(--brand);opacity:.85;min-width:3px}
.bar span:first-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* modal / drawer */
#modal{position:fixed;inset:0;background:rgba(15,20,17,.45);z-index:40;display:flex;justify-content:flex-end}
#modal .box{background:var(--bg);width:min(620px,100%);height:100%;overflow:auto;padding:36px 36px 80px;animation:in .2s ease}
#modal.center{justify-content:center;align-items:center}
#modal.center .box{height:auto;max-height:90vh;border-radius:var(--r);width:min(520px,94%);padding:32px}
@keyframes in{from{transform:translateX(24px);opacity:0}to{transform:none;opacity:1}}
.x{float:right;border:0;background:none;font-size:26px;cursor:pointer;color:var(--muted);line-height:1}
.tl{border-left:2px solid var(--line);margin-left:6px;padding-left:22px}
.tl .ev{position:relative;padding-bottom:22px}
.tl .ev::before{content:'';position:absolute;left:-29px;top:8px;width:10px;height:10px;border-radius:50%;background:var(--brand)}
.tl .ev.fu::before{background:var(--warn)}.tl .ev.rv::before{background:var(--muted)}.tl .ev.bad::before{background:var(--bad)}
.tl .when{font-size:13px;color:var(--muted)}

#toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);z-index:60;display:flex;flex-direction:column;gap:8px;align-items:center}
#toast div{background:var(--ink);color:var(--bg);padding:10px 18px;border-radius:12px;font-size:14.5px;box-shadow:var(--sh)}
#toast div.err{background:var(--bad);color:#fff}

/* login */
#login{min-height:100vh;display:grid;place-items:center;padding:24px}
#login form{width:min(380px,100%)}
#login h1{font-size:28px;margin-bottom:6px}
#login .in{margin-top:6px}

/* memo print */
.memo{font:13px/1.45 'Hind Siliguri',sans-serif;color:#000;background:#fff;margin:0 auto;padding:10px;border:1px dashed var(--line)}
.memo.w58{width:219px}.memo.w80{width:302px}
.memo h4{text-align:center;font-size:15px;margin-bottom:2px}.memo .c{text-align:center}
.memo hr{border:0;border-top:1px dashed #000;margin:6px 0}
.memo .l{display:flex;justify-content:space-between;gap:8px}
#print{display:none}
@media print{body>*:not(#print){display:none!important}#print{display:block}#print .memo{border:0;padding:0}}

@media (max-width:900px){
  #shell{grid-template-columns:1fr}
  #nav{position:static;height:auto;flex-direction:row;overflow-x:auto;padding:12px 16px;border-right:0;border-bottom:1px solid var(--line);gap:4px}
  .brand{display:none}.nb{white-space:nowrap;padding:8px 12px}
  .who{margin:0 0 0 auto;padding:0 0 0 12px;border-top:0;border-left:1px solid var(--line);display:flex;align-items:center;gap:10px;white-space:nowrap;flex:none}.who small{display:none}.who .row{margin:0}.who button{margin:0}
  main{padding:24px 16px 100px}
  .pane{padding:20px}
  .pos{grid-template-columns:1fr}.pos .cart{position:static}
  .g2,.g3{grid-template-columns:1fr}
  #modal .box{padding:28px 20px 80px}
  .line{grid-template-columns:1fr 56px 72px 64px 22px}
}