/* Dhanvantri AMRIT — shared tokens + panel shell (user & admin)
   Layout: fixed sidebar (collapses to drawer < 900px) + sticky topbar + content grid of cards */
:root{
  --bg:#f2f5f0; --paper:#ffffff; --sunk:#e8eee6; --ink:#14211a; --muted:#5b6a60; --line:#d6ded6;
  --leaf:#1d6b2a; --leaf-2:#2f8f3c; --leaf-soft:#e2f1e2; --gold:#b98a12; --gold-2:#e2b746; --gold-soft:#fbf1d4;
  --ok:#2e7d32; --warn:#c77700; --bad:#c62828; --info:#1565c0;
  --side:#0f3d1b; --side-ink:#dbe9dc; --side-hi:#e2b746;
  --display:"Tiro Devanagari Hindi","Noto Serif",Georgia,serif; --sans:"Hind","Noto Sans Devanagari",system-ui,sans-serif; --mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
  --r:12px; --shadow:0 1px 2px rgba(20,33,26,.05),0 8px 24px rgba(20,33,26,.07);
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){--bg:#0e1611;--paper:#162019;--sunk:#1c2820;--ink:#ecf3ec;--muted:#a3b2a7;--line:#2a372e;--leaf:#7fd08a;--leaf-2:#5fb86b;--leaf-soft:#1c3322;--gold:#e7bd52;--gold-2:#f1cf72;--gold-soft:#3a2f11;--ok:#66bb6a;--warn:#ffb74d;--bad:#ef7070;--info:#64b5f6;--side:#0a1c0f;--side-ink:#cfe0d1;--side-hi:#f1cf72;--shadow:0 1px 2px rgba(0,0,0,.4),0 10px 28px rgba(0,0,0,.35);color-scheme:dark}}
:root[data-theme="dark"]{--bg:#0e1611;--paper:#162019;--sunk:#1c2820;--ink:#ecf3ec;--muted:#a3b2a7;--line:#2a372e;--leaf:#7fd08a;--leaf-2:#5fb86b;--leaf-soft:#1c3322;--gold:#e7bd52;--gold-2:#f1cf72;--gold-soft:#3a2f11;--ok:#66bb6a;--warn:#ffb74d;--bad:#ef7070;--info:#64b5f6;--side:#0a1c0f;--side-ink:#cfe0d1;--side-hi:#f1cf72;--shadow:0 1px 2px rgba(0,0,0,.4),0 10px 28px rgba(0,0,0,.35);color-scheme:dark}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:15px;line-height:1.5}
h1,h2,h3{font-family:var(--display);font-weight:400;text-wrap:balance;margin:0}
a{color:var(--leaf)}
.num,.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
button{font:inherit;cursor:pointer}
:focus-visible{outline:3px solid color-mix(in srgb,var(--gold) 60%,transparent);outline-offset:2px}

/* shell */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:40;background:var(--side)}
.shell{display:grid;grid-template-columns:260px 1fr;min-height:100%}
.side{background:var(--side);color:var(--side-ink);position:sticky;top:0;height:100vh;overflow-y:auto;padding:16px 0 24px;padding-left:env(safe-area-inset-left,0px);z-index:30}
.side .brand{display:flex;align-items:center;gap:10px;padding:0 16px 14px;border-bottom:1px solid rgba(255,255,255,.08)}
.side .brand img{width:52px;height:auto;background:#fff;border-radius:10px;padding:3px}
.side .brand b{display:block;font-family:var(--display);font-size:17px;color:#fff;font-weight:400}
.side .brand small{font-size:11.5px;opacity:.75}
.who{display:flex;gap:10px;align-items:center;padding:14px 16px;border-bottom:1px solid rgba(255,255,255,.08)}
.who .av{width:42px;height:42px;border-radius:50%;background:var(--side-hi);color:#3a2a00;display:grid;place-items:center;font-weight:700}
.who b{display:block;color:#fff;font-size:14px}.who small{font-size:11.5px;opacity:.8}
.nav{list-style:none;margin:8px 0 0;padding:0}
.nav .grp{font-size:10.5px;text-transform:uppercase;letter-spacing:.12em;opacity:.55;padding:14px 18px 4px}
.nav a{display:flex;gap:10px;align-items:center;padding:8px 18px;color:var(--side-ink);text-decoration:none;font-size:14px;border-left:3px solid transparent}
.nav a:hover{background:rgba(255,255,255,.05)}
.nav a.on{background:rgba(226,183,70,.12);border-left-color:var(--side-hi);color:#fff}
.nav svg{width:17px;height:17px;flex:none;stroke:currentColor;fill:none;stroke-width:1.8;opacity:.85}
.main{min-width:0;display:flex;flex-direction:column}
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px;padding-block:10px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.top h1{font-size:22px;flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.burger{display:none;background:var(--paper);border:1px solid var(--line);border-radius:10px;width:40px;height:40px;color:var(--ink)}
.chipbtn{background:var(--paper);border:1px solid var(--line);border-radius:99px;padding:6px 12px;color:var(--ink);font-size:13px;display:inline-flex;gap:6px;align-items:center}
.content{padding-block:18px 40px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));display:grid;gap:16px;align-content:start}
.crumb{font-size:12.5px;color:var(--muted)}
@media (max-width:900px){.shell{grid-template-columns:1fr}.side{position:fixed;inset:0 auto 0 0;width:280px;transform:translateX(-102%);transition:transform .25s}.side.open{transform:none;box-shadow:0 0 0 100vmax rgba(0,0,0,.45)}.burger{display:grid;place-items:center}}

/* cards & grids */
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:16px;min-width:0}
.card h2{font-size:19px;margin-bottom:10px}
.card h3{font-size:16px;margin-bottom:8px}
.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))}
@media (max-width:1100px){.g4{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.g2,.g3,.g4{grid-template-columns:1fr}}
.stat{display:grid;gap:2px;padding:14px 16px;border-radius:var(--r);background:var(--paper);border:1px solid var(--line);min-width:0;position:relative;overflow:hidden}
.stat .lab{font-size:11.5px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.stat .val{font-family:var(--mono);font-size:24px;font-weight:500;font-variant-numeric:tabular-nums;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.stat .sub{font-size:12.5px;color:var(--muted)}
.stat.hero{background:linear-gradient(135deg,var(--leaf),color-mix(in srgb,var(--leaf) 60%,#000));color:#fff;border:0}
.stat.hero .lab,.stat.hero .sub{color:rgba(255,255,255,.8)}
.stat.gold{background:var(--gold-soft);border-color:color-mix(in srgb,var(--gold) 40%,transparent)}
.stat svg.spark{position:absolute;right:10px;bottom:10px;width:90px;height:30px;opacity:.9}
.pill{display:inline-block;font-size:11.5px;font-weight:600;padding:2px 9px;border-radius:99px;background:var(--sunk);color:var(--muted);white-space:nowrap}
.pill.ok{background:color-mix(in srgb,var(--ok) 16%,transparent);color:var(--ok)}.pill.warn{background:color-mix(in srgb,var(--warn) 18%,transparent);color:var(--warn)}.pill.bad{background:color-mix(in srgb,var(--bad) 15%,transparent);color:var(--bad)}.pill.info{background:color-mix(in srgb,var(--info) 15%,transparent);color:var(--info)}.pill.gold{background:var(--gold-soft);color:var(--gold)}
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:10px}
table.t{width:100%;border-collapse:collapse;font-size:13.5px}
table.t td.r{white-space:nowrap}
table.t th{background:var(--sunk);text-align:left;font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);padding:9px 10px;position:sticky;top:0}
table.t td{padding:9px 10px;border-top:1px solid var(--line);vertical-align:top}
table.t td.r,table.t th.r{text-align:right}
table.t td.num{font-family:var(--mono)}
table.t tr:hover td{background:color-mix(in srgb,var(--leaf-soft) 50%,transparent)}
.btn{display:inline-flex;align-items:center;gap:6px;border-radius:10px;padding:9px 14px;border:1px solid var(--leaf);background:var(--leaf);color:#fff;font-weight:600;text-decoration:none;font-size:14px}
:root .btn{color:#fff}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .btn{color:#0e1611}}
:root[data-theme="dark"] .btn{color:#0e1611}
.btn.ghost{background:transparent;color:var(--leaf)}
.btn.gold{background:var(--gold);border-color:var(--gold);color:#2a1e00}
.btn.sm{padding:5px 10px;font-size:12.5px;border-radius:8px}
.btn.bad{background:var(--bad);border-color:var(--bad);color:#fff}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.spacer{flex:1}
label.f{display:grid;gap:4px;font-size:13px;color:var(--muted);min-width:0}
.in,select.in,textarea.in{font:inherit;color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:9px 11px;width:100%}
.form{display:grid;gap:12px;grid-template-columns:repeat(2,minmax(0,1fr))}
@media (max-width:640px){.form{grid-template-columns:1fr}}
.kv{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;margin:0;font-size:13.5px}
.kv dt{color:var(--muted)}.kv dd{margin:0;text-align:right;font-family:var(--mono);font-variant-numeric:tabular-nums}
.kv dd.t{font-family:var(--sans)}
.bar{height:10px;border-radius:99px;background:var(--sunk);overflow:hidden}
.bar>i{display:block;height:100%;background:linear-gradient(90deg,var(--leaf-2),var(--gold-2));border-radius:99px;transition:width .6s}
.note{font-size:12.5px;color:var(--muted)}
.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:10px;font-size:14px;z-index:60;box-shadow:var(--shadow)}
.empty{padding:28px;text-align:center;color:var(--muted)}

/* binary tree */
.tw-totals{display:grid;grid-template-columns:1fr auto 1fr;gap:10px;align-items:center;padding-bottom:12px;border-bottom:1px solid var(--line)}
.tw-tot{display:grid;gap:1px;font-size:12px}.tw-tot b{font-family:var(--mono);font-size:15px;font-weight:500}.tw-tot .l{color:var(--muted);font-size:10.5px;text-transform:uppercase;letter-spacing:.06em}.tw-tot.r{text-align:right}
.tw-pair{background:var(--gold-soft);border:1px solid color-mix(in srgb,var(--gold) 45%,transparent);border-radius:12px;padding:8px 14px;text-align:center;min-width:150px}
.tw-pair b{display:block;font-family:var(--mono);font-size:22px;font-weight:500}.tw-pair .l{font-size:10.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}.tw-pair .rk{font-size:12.5px;color:var(--leaf);font-weight:700}
.tw-scroll{overflow-x:auto}
.tw-stage{position:relative;min-width:560px;height:400px;margin-top:10px}
.tw-stage>svg{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.tw-node{position:absolute;transform:translateX(-50%);width:116px;text-align:center;background:none;border:0;padding:0;color:var(--ink)}
.tw-node .av{width:56px;height:56px;margin:0 auto;border-radius:50%;display:grid;place-items:center;transition:transform .15s;position:relative}
.tw-node .av svg{width:60%;height:60%;fill:#fff}
.tw-node.root .av{width:70px;height:70px;box-shadow:0 0 0 4px var(--gold-soft),0 0 0 6px var(--gold)}
.tw-node.kit .av{background:var(--ok)}.tw-node.half .av{background:var(--gold-2)}.tw-node.reg .av{background:var(--bad)}
.tw-node.add .av{border:2px dashed var(--muted);background:transparent}.tw-node.add .av svg{fill:var(--muted)}
.tw-node:hover .av{transform:scale(1.07)}
.tw-node .id{display:block;margin-top:6px;font-family:var(--mono);font-size:12.5px;color:var(--leaf);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tw-node .nm{display:block;font-size:11px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tw-node .rk{display:inline-block;margin-top:2px;font-size:10px;font-weight:700;padding:1px 7px;border-radius:99px;background:var(--leaf-soft);color:var(--leaf)}
.tw-node.gc{width:104px}.tw-node.gc .av{width:46px;height:46px}
.tw-tip{position:fixed;z-index:70;width:300px;max-width:calc(100vw - 24px);background:var(--paper);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:12px 14px;font-size:12.5px;pointer-events:none}
.tw-tip h4{margin:0 0 6px;font-family:var(--mono);font-weight:500;font-size:14px;color:var(--leaf)}
.tw-legend{display:flex;flex-wrap:wrap;gap:6px 16px;font-size:12px;color:var(--muted);padding-top:10px;border-top:1px solid var(--line)}
.tw-legend i{display:inline-block;width:11px;height:11px;border-radius:50%;margin-right:5px;vertical-align:-1px}
.tw-crumbs{display:flex;gap:4px;overflow-x:auto;white-space:nowrap;font-size:12.5px;color:var(--muted);align-items:center}
.tw-crumbs button{background:none;border:0;color:var(--leaf);font-weight:600;padding:2px 4px;border-radius:5px}
.tw-crumbs button:hover{background:var(--leaf-soft)}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

/* v1.0 additions: modal, badges, loading, tabs, skip link, cart lines */
.skip{position:absolute;left:-999px;top:8px;background:var(--paper);padding:8px 12px;border-radius:8px;z-index:90}.skip:focus{left:8px}
.nav a span{flex:1}
.nav .badge{background:var(--side-hi);color:#3a2a00;font-size:11px;font-weight:700;border-radius:99px;padding:0 7px;min-width:20px;text-align:center}
dialog.modal{border:0;border-radius:16px;padding:0;width:min(560px,calc(100vw - 24px));max-height:calc(100vh - 40px);background:var(--paper);color:var(--ink);box-shadow:0 20px 60px rgba(0,0,0,.35)}
dialog.modal.wide{width:min(920px,calc(100vw - 24px))}
dialog.modal::backdrop{background:rgba(10,20,14,.55);backdrop-filter:blur(2px)}
.modal-in{padding:18px;display:block}
.modal-body{margin-top:12px;display:grid;gap:12px}
.loading{display:flex;gap:10px;align-items:center;color:var(--muted)}
.spin{width:18px;height:18px;border-radius:50%;border:2px solid var(--line);border-top-color:var(--leaf);animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.tabs{display:flex;gap:6px;flex-wrap:wrap}
.tabs button{border:1px solid var(--line);background:var(--paper);color:var(--ink);border-radius:99px;padding:6px 12px;font-size:13px}
.tabs button.on{background:var(--leaf);border-color:var(--leaf);color:#fff}
.cartline{display:grid;grid-template-columns:1fr auto auto;gap:10px;align-items:center;padding:8px 0;border-top:1px solid var(--line);font-size:14px}
.kvgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px}
.kvgrid div{background:var(--sunk);border-radius:10px;padding:8px 10px;font-size:13px}.kvgrid b{display:block;font-family:var(--mono);font-weight:500;font-size:15px}
.secret{font-family:var(--mono);background:var(--gold-soft);border:1px dashed var(--gold);border-radius:10px;padding:10px 12px;font-size:15px}
.gauge{display:grid;gap:4px;font-size:13px}.gauge .bar>i.over{background:var(--bad)}
.inline-form{display:flex;gap:8px;flex-wrap:wrap;align-items:end}
.inline-form label.f{min-width:140px}
.tw-node[disabled]{cursor:default}
@media (max-width:640px){
  .g4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat{padding:11px 12px}.stat .val{font-size:19px}.stat .lab{font-size:10.5px}
  .tw-totals{grid-template-columns:1fr 1fr}.tw-pair{grid-column:1/-1;order:-1}
  .tw-tot b{font-size:13.5px}
  .top h1{font-size:19px}.top .chipbtn{padding:5px 10px;font-size:12.5px}
  .content{gap:12px}
}
@media (max-width:640px){.tw-stage{min-width:380px;height:370px}.tw-node{width:92px}.tw-node .av{width:46px;height:46px}.tw-node.root .av{width:56px;height:56px}.tw-node.gc{width:84px}.tw-node.gc .av{width:38px;height:38px}.tw-node .id{font-size:11px}.tw-node .nm{font-size:10px}}
.tw-node .av svg{display:block;width:58%;height:58%}

/* GST invoice */
#inv{position:fixed;inset:0;z-index:95;background:rgba(10,20,14,.55);overflow:auto;padding:16px}
#inv .inv-bar{max-width:900px;margin:0 auto 10px;display:flex;gap:8px;align-items:center;color:#fff}
#inv .inv-page{max-width:900px;margin:0 auto;background:#fff;color:#1a1a1a;border-radius:12px;padding:26px;font-size:13.5px}
#inv .inv-head{display:grid;grid-template-columns:auto 1fr auto;gap:16px;align-items:start;border-bottom:2px solid #2e7d32;padding-bottom:12px}
#inv .inv-head img{height:72px}#inv .inv-head h2{margin:0;font-size:20px;color:#1b4d20}#inv .inv-head p{margin:2px 0;color:#444}
#inv .inv-title{font-weight:700;font-size:18px;text-align:right;color:#1b4d20}#inv .inv-title small{display:block;font-weight:400;font-size:11px;color:#666}
#inv .inv-meta{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px;margin:14px 0}#inv .inv-meta p{margin:2px 0}
#inv .inv-t{width:100%;background:#fff;color:#1a1a1a}#inv .inv-t th{background:#eef5ee;color:#1a1a1a}#inv .inv-t td,#inv .inv-t th{border-bottom:1px solid #ddd}
#inv .inv-sum{display:grid;grid-template-columns:1fr 280px;gap:16px;margin-top:12px}#inv .inv-sum .kv dd{font-family:var(--mono)}
#inv .note{color:#666}#inv .inv-sign{text-align:right;margin-top:24px}
@media (max-width:640px){#inv .inv-head{grid-template-columns:1fr}#inv .inv-title{text-align:left}#inv .inv-sum{grid-template-columns:1fr}#inv .inv-page{padding:16px}}
@media print{body.inv-print>*:not(#inv){display:none!important}body.inv-print #inv{position:static;background:none;padding:0;overflow:visible}body.inv-print .inv-bar{display:none}body.inv-print .inv-page{border-radius:0;padding:0;max-width:none}}