/* ---------- Themes (from the proposal) ---------- */
:root, [data-theme="kesari"] { --primary:#9b1c1c; --accent:#e88a1a; --bg:#fff8ea; --soft:#fdf1d6; --gold:#c8902e; --ink:#2a1a14; --muted:#7a6a60; --line:#ecdcbc; --card:#fff; --onprimary:#fff; --onaccent:#fff; }
[data-theme="mayur"]  { --primary:#0f3a57; --accent:#f0c35f; --bg:#f8f5e8; --soft:#efeadb; --gold:#0e6b6b; --ink:#10222f; --muted:#5f6d75; --line:#ddd7c2; --onaccent:#10222f; }
[data-theme="sangam"] { --primary:#0f3a57; --accent:#e88a1a; --bg:#fffaf0; --soft:#fbf0d8; --gold:#c8902e; --ink:#10222f; --muted:#5f6d75; --line:#eadfc3; --onaccent:#fff; }
[data-theme="tulsi"]  { --primary:#1b4a2c; --accent:#e88a1a; --bg:#fbf6ea; --soft:#f4ecd5; --gold:#f0c35f; --ink:#142619; --muted:#5d6b60; --line:#e3dabf; --onaccent:#fff; }
[data-theme="slate"]  { --primary:#0b1a33; --accent:#14b8a6; --bg:#f6f8fc; --soft:#e8eef8; --gold:#27528f; --ink:#0b1a33; --muted:#5d6a80; --line:#dbe3f0; --onaccent:#fff; }
:root { --ok:#1d7a4a; --okbg:#dff3e7; --warn:#8a4b00; --warnbg:#ffeccc; --bad:#b42318; --radius:12px; --shadow:0 1px 2px rgba(0,0,0,.05),0 6px 20px rgba(0,0,0,.06); }

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font:15px/1.5 "Segoe UI",system-ui,-apple-system,Roboto,sans-serif;background:var(--bg);color:var(--ink)}
h1,h2,h3{font-family:Georgia,"Times New Roman",serif;line-height:1.2;margin:0 0 .4em}
a{color:var(--primary)}
button,input,select{font:inherit;color:inherit}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.muted{color:var(--muted)} .right{text-align:right} .center{text-align:center}
.hide{display:none!important}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:6px;border:1px solid transparent;background:var(--primary);color:var(--onprimary);padding:9px 16px;border-radius:9px;cursor:pointer;font-weight:600;text-decoration:none;white-space:nowrap}
.btn:hover{filter:brightness(1.1)}
.btn.accent{background:var(--accent);color:var(--onaccent)}
.btn.ghost{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn.wa{background:#25d366;color:#06361a}
.btn.sm{padding:5px 10px;font-size:13px;border-radius:7px}
.btn.block{width:100%;justify-content:center}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* theme dots */
.dots{display:flex;gap:6px;align-items:center}
.dot{width:20px;height:20px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px rgba(0,0,0,.25);cursor:pointer;padding:0}
.dot.on{box-shadow:0 0 0 2px var(--accent)}

/* ---------- Landing ---------- */
.site-head{background:var(--primary);color:var(--onprimary);position:sticky;top:0;z-index:20}
.site-head .wrap{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-family:Georgia,serif;font-weight:700;font-size:20px;color:inherit;text-decoration:none}
.logo{width:34px;height:34px;border-radius:10px;background:var(--accent);color:var(--onaccent);display:grid;place-items:center;font-weight:800;font-size:19px;font-family:Georgia,serif}
.brand small{display:block;font:400 11px "Segoe UI",sans-serif;opacity:.8;letter-spacing:.04em}
.nav{display:flex;gap:18px;margin-left:auto;align-items:center}
.nav a{color:inherit;text-decoration:none;opacity:.9;font-size:14px}
.nav a:hover{opacity:1;text-decoration:underline}
.hero{background:linear-gradient(135deg,var(--primary),color-mix(in srgb,var(--primary) 70%,#000));color:var(--onprimary);padding:76px 0 90px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,var(--accent) 0,transparent 68%);opacity:.35}
.hero .wrap{position:relative;z-index:1;display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center}
.eyebrow{color:var(--accent);font-weight:700;letter-spacing:.12em;font-size:12px;text-transform:uppercase}
.hero h1{font-size:clamp(34px,5vw,56px);margin:.2em 0}
.hero p{font-size:18px;opacity:.9;max-width:560px}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.hero .btn.ghost{color:#fff;border-color:rgba(255,255,255,.6)}
.mock{background:var(--card);color:var(--ink);border-radius:var(--radius);box-shadow:0 20px 50px rgba(0,0,0,.35);overflow:hidden;font-size:13px}
.mock .bar{background:var(--accent);color:var(--onaccent);padding:8px 14px;font-weight:700}
.mock table{width:100%;border-collapse:collapse}
.mock td,.mock th{padding:6px 14px;text-align:left}
.mock tr+tr td{border-top:1px solid var(--line)}
.mock .tot{background:var(--soft);font-weight:800;font-size:16px;color:var(--primary)}
section.block{padding:64px 0}
section.alt{background:var(--soft)}
.sec-title{text-align:center;max-width:680px;margin:0 auto 36px}
.sec-title h2{font-size:34px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.card h3{font-size:19px}
.num{width:34px;height:34px;border-radius:50%;background:var(--accent);color:var(--onaccent);display:grid;place-items:center;font-weight:800;margin-bottom:10px}
.steps{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.steps .card{text-align:center;padding:16px 10px}
.steps .num{margin:0 auto 8px}
.steps b{display:block;font-size:14px}
.steps small{color:var(--muted)}
.card ul{padding-left:18px;margin:8px 0 0}
.card li{margin:4px 0}
.theme-card{cursor:pointer;text-align:center}
.theme-card .sw{display:flex;height:46px;border-radius:8px;overflow:hidden;margin-bottom:10px}
.theme-card .sw i{flex:1}
.theme-card.on{outline:3px solid var(--accent)}
.foot{background:var(--primary);color:var(--onprimary);padding:28px 0;font-size:14px}
.foot .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* ---------- App shell ---------- */
.app-head{background:var(--primary);color:var(--onprimary);position:sticky;top:0;z-index:20}
.app-head .wrap{display:flex;align-items:center;gap:16px;min-height:60px;flex-wrap:wrap;padding-top:6px;padding-bottom:6px}
.who{margin-left:auto;display:flex;align-items:center;gap:14px;font-size:13px}
.role-pill{background:var(--accent);color:var(--onaccent);padding:2px 10px;border-radius:99px;font-weight:700;font-size:12px}
.tabs{background:var(--soft);border-bottom:1px solid var(--line);position:sticky;top:60px;z-index:15;overflow-x:auto}
.tabs .wrap{display:flex;gap:4px}
.tab{background:none;border:0;padding:12px 16px;cursor:pointer;color:var(--muted);font-weight:600;border-bottom:3px solid transparent;white-space:nowrap}
.tab.on{color:var(--primary);border-color:var(--accent)}
.badge{background:var(--bad);color:#fff;border-radius:99px;font-size:11px;padding:1px 7px;margin-left:5px}
main.wrap{padding-top:24px;padding-bottom:60px}
.page-h{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.page-h h2{margin:0;font-size:26px}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}

.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:18px}
.kpi{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px}
.kpi small{color:var(--muted);font-weight:700;font-size:11px;letter-spacing:.06em;text-transform:uppercase}
.kpi b{display:block;font-size:26px;color:var(--primary);font-family:Georgia,serif}
.two{display:grid;grid-template-columns:1.6fr 1fr;gap:16px}
.chart{display:flex;align-items:flex-end;gap:10px;height:190px;padding:10px 4px 0}
.chart .col{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%;font-size:11px;color:var(--muted)}
.chart .col i{display:block;width:100%;background:var(--primary);border-radius:6px 6px 0 0;min-height:2px}
.chart .col.max i{background:var(--accent)}
.chart .col span{margin-top:4px}
.top{list-style:none;margin:0;padding:0}
.top li{display:flex;align-items:center;gap:10px;padding:8px 0;border-bottom:1px solid var(--line)}
.top li:last-child{border:0}
.top .n{width:24px;height:24px;border-radius:50%;background:var(--primary);color:var(--onprimary);display:grid;place-items:center;font-size:12px;font-weight:700;flex:none}
.top .bar{height:5px;background:var(--accent);border-radius:3px;margin-top:3px}
.top .t{flex:1;min-width:0}

table.t{width:100%;border-collapse:collapse;background:var(--card)}
.tw{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:auto}
table.t th{background:var(--soft);text-align:left;font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);padding:10px 12px;white-space:nowrap}
table.t td{padding:10px 12px;border-top:1px solid var(--line);vertical-align:middle}
table.t tr:hover td{background:color-mix(in srgb,var(--soft) 45%,transparent)}
.tag{display:inline-block;padding:2px 10px;border-radius:99px;font-size:12px;font-weight:700}
.tag.ok{background:var(--okbg);color:var(--ok)} .tag.low{background:var(--warnbg);color:var(--warn)} .tag.out{background:#fde0dd;color:var(--bad)}
.alert{display:flex;gap:10px;align-items:center;background:var(--warnbg);color:var(--warn);border:1px solid #f1c27a;border-radius:10px;padding:10px 14px;margin-bottom:14px;font-weight:600}
.alert.good{background:var(--okbg);color:var(--ok);border-color:#a9dcbf}

/* billing */
.bill-grid{display:grid;grid-template-columns:1.7fr 1fr;gap:16px;align-items:start}
.scan{display:flex;gap:8px;margin-bottom:12px}
.scan input{flex:1}
input,select{border:1px solid var(--line);background:#fff;border-radius:9px;padding:9px 11px;width:100%;color:var(--ink)}
input:focus,select:focus{outline:2px solid var(--accent);border-color:transparent}
.scan input{font-size:17px;padding:12px 14px;border:2px solid var(--primary)}
label{display:block;font-size:12px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.05em;margin:10px 0 4px}
.qty{width:76px;text-align:center}
.side{background:var(--soft);border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.sumrow{display:flex;justify-content:space-between;padding:3px 0}
.grand{display:flex;justify-content:space-between;align-items:baseline;border-top:1px solid var(--line);margin-top:8px;padding-top:10px}
.grand b{font-size:32px;color:var(--primary);font-family:Georgia,serif}
.x{background:none;border:0;color:var(--bad);cursor:pointer;font-size:18px}
.empty{padding:34px;text-align:center;color:var(--muted)}

/* modal / toast */
.modal-bg{position:fixed;inset:0;background:rgba(20,10,5,.55);display:grid;place-items:center;z-index:50;padding:16px;overflow:auto}
.modal{background:var(--card);border-radius:14px;width:min(560px,100%);max-height:92vh;overflow:auto;padding:22px;box-shadow:0 30px 80px rgba(0,0,0,.4)}
.modal.wide{width:min(760px,100%)}
.modal h3{font-size:22px}
.modal .acts{display:flex;gap:8px;justify-content:flex-end;margin-top:16px;flex-wrap:wrap}
.form2{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}
.hint{background:var(--soft);border-radius:8px;padding:8px 10px;font-size:13px;margin:8px 0;color:var(--muted)}
.hint a{cursor:pointer;font-weight:700}
.seg{display:flex;border:1px solid var(--primary);border-radius:9px;overflow:hidden;margin-bottom:6px}
.seg button{flex:1;background:#fff;border:0;padding:9px;cursor:pointer;font-weight:600;color:var(--primary)}
.seg button.on{background:var(--primary);color:var(--onprimary)}
#toast-root{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);z-index:90;display:grid;gap:8px}
.toast{background:var(--ink);color:#fff;padding:10px 18px;border-radius:10px;box-shadow:var(--shadow);max-width:90vw}
.toast.warn{background:var(--warn)} .toast.good{background:var(--ok)}
video{width:100%;border-radius:10px;background:#000}

/* invoice */
.inv{background:#fff;color:#1b1b1b;border:1px solid #ddd;border-radius:8px;overflow:hidden;font-size:13px}
.inv-h{background:var(--primary);color:var(--onprimary);display:flex;justify-content:space-between;padding:14px 16px;gap:12px}
.inv-h h2{margin:0;font-size:20px;color:inherit}
.inv-h small{opacity:.85;display:block}
.inv-no{text-align:right;color:var(--accent)} .inv-no b{display:block;font-size:20px;color:var(--onprimary)}
.inv-body{padding:12px 16px}
.inv table{width:100%;border-collapse:collapse}
.inv th{background:var(--soft);text-align:left;padding:6px 8px;font-size:11px;text-transform:uppercase}
.inv td{padding:6px 8px;border-bottom:1px solid #eee}
.inv .tot{background:var(--accent);color:var(--onaccent);display:flex;justify-content:space-between;padding:10px 12px;font-weight:800;font-size:18px;margin-top:10px;border-radius:6px}
.inv .ty{text-align:center;color:var(--primary);font-weight:700;margin-top:14px}
.inv .fine{text-align:center;color:#888;font-size:11px;margin-top:2px}
#printArea{display:none}

@media (max-width:900px){
  .hero .wrap,.two,.bill-grid{grid-template-columns:1fr}
  .grid3,.grid4{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:repeat(3,1fr)}
  .kpis{grid-template-columns:1fr 1fr}
  .nav a.hide-m{display:none}
  .tabs{top:0;position:static}
}
@media (max-width:560px){
  .grid3,.grid4{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  .form2{grid-template-columns:1fr}
  .who span.u{display:none}
}
@media print{
  body>*:not(#printArea){display:none!important}
  #printArea{display:block!important}
  body{background:#fff}
  .inv{border:0;max-width:720px;margin:0 auto}
  .inv-h,.inv .tot,.inv th{-webkit-print-color-adjust:exact;print-color-adjust:exact}
  .rep-table{width:100%;border-collapse:collapse}
  .rep-table th,.rep-table td{border:1px solid #ccc;padding:6px 8px;text-align:left}
}

/* ---------- Scan-to-bill emphasis (all sizes) ---------- */
.g2{grid-template-columns:1fr 1fr}
.g5{grid-template-columns:repeat(5,1fr)}
.two.eq{grid-template-columns:1fr 1fr}
.tab.primary{background:var(--accent);color:var(--onaccent);border-radius:99px;margin:6px 4px;padding:6px 16px;border-bottom:0}
.tab.primary.on{box-shadow:0 0 0 2px var(--primary) inset}
.cta-card{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;background:linear-gradient(135deg,var(--primary),color-mix(in srgb,var(--primary) 70%,#000));color:var(--onprimary);border-radius:var(--radius);padding:18px 22px;margin-bottom:18px;box-shadow:var(--shadow)}
.cta-card h3{margin:0 0 4px;font-size:22px}
.cta-card p{margin:0;opacity:.88;max-width:520px}
.cta-card .btn.ghost{color:#fff;border-color:rgba(255,255,255,.7)}
.btn.big{padding:13px 20px;font-size:16px}
.bnav{display:none}

/* ---------- Mobile ---------- */
@media (max-width:700px){
  body{font-size:16px}
  body.has-nav{padding-bottom:calc(76px + env(safe-area-inset-bottom))}
  .wrap{padding:0 14px}
  input,select{font-size:16px;padding:11px 12px}
  .btn{min-height:44px;justify-content:center}
  .btn.sm{min-height:38px}
  .g2,.g5,.two.eq{grid-template-columns:1fr}
  .g5{grid-template-columns:1fr 1fr}
  .hero{padding:44px 0 56px}
  .hero .cta .btn{flex:1}
  section.block{padding:40px 0}
  .sec-title h2{font-size:26px}
  .site-head .wrap{gap:10px}
  .site-head .dots{display:none}
  .nav{gap:10px}
  .brand small{display:none}

  /* app header + navigation */
  .app-head .wrap{min-height:54px}
  .who .dots,.who span.u,.who .btn{display:none}
  .tabs{display:none}
  .bnav{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:30;background:var(--card);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);box-shadow:0 -4px 18px rgba(0,0,0,.1)}
  .bnav button{flex:1;background:none;border:0;padding:7px 2px 6px;font-size:11px;color:var(--muted);display:flex;flex-direction:column;align-items:center;gap:1px;position:relative;cursor:pointer;min-width:0;white-space:nowrap}
  .bnav button i{font-style:normal;font-size:20px;line-height:1.2}
  .bnav button.on{color:var(--primary);font-weight:700}
  .bnav button.primary{color:var(--ink);font-weight:700}
  .bnav button.primary i{background:var(--accent);width:46px;height:46px;border-radius:50%;display:grid;place-items:center;margin-top:-20px;box-shadow:0 4px 12px rgba(0,0,0,.25);border:3px solid var(--card);font-size:22px}
  .bnav .badge{position:absolute;top:2px;left:55%}
  main.wrap{padding-top:16px}
  .page-h h2{font-size:22px}
  .page-h .row,.page-h input{width:100%}
  .page-h input#search{width:100%!important}
  .kpis{grid-template-columns:1fr 1fr;gap:10px}
  .kpi b{font-size:21px}
  .cta-card{padding:16px}
  .cta-card .row,.cta-card .btn{width:100%}
  .chart{height:150px;gap:6px}

  /* billing: sticky scan bar, big targets */
  .scan{position:sticky;top:54px;z-index:12;background:var(--bg);padding:8px 0;margin:0 0 6px}
  .scan input{font-size:18px}
  .scan .btn.accent{padding:0 14px}
  .qty{width:84px;font-size:18px}
  .grand b{font-size:28px}

  /* tables become cards */
  .tw{overflow:visible;background:transparent;border:0}
  table.t,table.t tbody,table.t tr,table.t td{display:block;width:100%}
  table.t tr:has(th){display:none}
  table.t tr{background:var(--card);border:1px solid var(--line);border-radius:12px;margin-bottom:10px;padding:10px 12px}
  table.t td{border:0!important;padding:3px 0;text-align:left!important;background:none!important}
  table.t td::before{content:attr(data-l);display:inline-block;min-width:92px;color:var(--muted);font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;margin-right:8px}
  table.t td:first-child{font-size:16px}
  table.t td:first-child::before,table.t td:not([data-l])::before,table.t td[data-l=""]::before{display:none}
  table.t td.span{text-align:center!important}
  table.t td .btn{margin:6px 6px 0 0}
  table.t td .qty{display:inline-block;width:90px}
  .tw{max-height:none!important}

  /* modals become bottom sheets */
  .modal-bg{align-items:end;padding:0}
  .modal,.modal.wide{width:100%;max-height:92vh;border-radius:18px 18px 0 0;padding:18px 16px calc(18px + env(safe-area-inset-bottom))}
  .modal .acts .btn{flex:1}
  .inv-h{flex-direction:column}
  .inv-no{text-align:left}
  #toast-root{bottom:calc(86px + env(safe-area-inset-bottom));width:calc(100% - 28px)}
  .toast{text-align:center}
}
.hero .wrap>*,.grid3>*,.grid4>*,.two>*,.bill-grid>*,.steps>*{min-width:0}
@media (max-width:900px){.hero .wrap,.two,.bill-grid{grid-template-columns:minmax(0,1fr)}}
@media (max-width:700px){.mock{font-size:12px}.mock td,.mock th{padding:6px 8px}.hero h1{font-size:32px}html,body{overflow-x:hidden}}
video.flash-ok{outline:6px solid #25d366;outline-offset:-6px}
video.flash-bad{outline:6px solid #e53935;outline-offset:-6px}

/* ---------- thermal receipt ---------- */
.rcpt{font:12px/1.35 "Courier New",Consolas,monospace;color:#000;background:#fff;padding:3mm 2mm;box-sizing:border-box;width:100%}
.rcpt .c{text-align:center} .rcpt .b{font-weight:700} .rcpt .sm{font-size:10px} .rcpt .big{font-size:16px;line-height:1.2}
.rcpt hr{border:0;border-top:1px dashed #000;margin:5px 0}
.rcpt hr.dbl{border-top:2px solid #000;margin:4px 0}
.rcpt .rw{display:flex;justify-content:space-between;gap:6px}
.rcpt .tot{font-size:17px;font-weight:800}
.rcpt .cut{color:#fff;height:8mm}
.rcpt-prev{margin:8px auto;border:1px dashed #999;box-shadow:var(--shadow)}
.rcpt-prev.w58{width:58mm} .rcpt-prev.w80{width:80mm}
@media print{
  html,body{margin:0!important;padding:0!important;background:#fff!important}
  body[data-fmt="80"] .rcpt{font-size:14px} body[data-fmt="58"] .rcpt{font-size:12px}
  #printArea .rcpt{width:100%;padding:2mm 1.5mm}
}
.btn.danger{background:var(--bad);color:#fff;border-color:var(--bad)}
.btn.ghost.danger{background:transparent;color:var(--bad);border-color:var(--bad)}
.combo{position:relative}
.combo-list{position:absolute;left:0;right:0;top:100%;z-index:25;background:var(--card);border:1px solid var(--line);border-radius:10px;max-height:260px;overflow:auto;box-shadow:var(--shadow);margin-top:4px}
.combo-item{display:block;width:100%;text-align:left;background:none;border:0;border-bottom:1px solid var(--line);padding:11px 12px;cursor:pointer;font-size:15px}
.combo-item:hover,.combo-item:focus{background:var(--soft)}
.inv .fine.pq{margin-top:10px;padding-top:8px;border-top:1px dashed #ccc;font-size:12px;color:#444;letter-spacing:.03em}