/* Layout: left rail nav on desktop, bottom tab bar on phone; one working panel at a time. */
:root{
  --bg:#eceae6; --surface:#fbfaf8; --ink:#1d2430; --muted:#69707d; --line:#d9d5ce;
  --accent:#c2610c; --accent-ink:#fff; --accent-soft:#f6e3d2;
  --ok:#1f7a4d; --ok-soft:#dcf0e5; --warn:#a86a00; --warn-soft:#fbecc8; --bad:#b3261e; --bad-soft:#f8dcd9; --info:#255f9e; --info-soft:#dce9f7;
  --font-display:'Barlow Semi Condensed','Noto Sans Devanagari','Arial Narrow',system-ui,sans-serif;
  --font-body:'Barlow','Noto Sans Devanagari',system-ui,-apple-system,'Segoe UI',sans-serif;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#14181f; --surface:#1c222c; --ink:#e8e6e1; --muted:#98a0ac; --line:#2e3744; --accent:#e8873a; --accent-ink:#1a1006; --accent-soft:#3a2614;
  --ok:#5cc593; --ok-soft:#173528; --warn:#e5b04a; --warn-soft:#3a2d12; --bad:#f08a82; --bad-soft:#401d1b; --info:#7fb3ec; --info-soft:#18283b; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#14181f; --surface:#1c222c; --ink:#e8e6e1; --muted:#98a0ac; --line:#2e3744; --accent:#e8873a; --accent-ink:#1a1006; --accent-soft:#3a2614;
  --ok:#5cc593; --ok-soft:#173528; --warn:#e5b04a; --warn-soft:#3a2d12; --bad:#f08a82; --bad-soft:#401d1b; --info:#7fb3ec; --info-soft:#18283b; color-scheme:dark}
*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font:15px/1.45 var(--font-body);padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-block:16px 88px}
h1,h2,h3{font-family:var(--font-display);margin:0;font-weight:700;letter-spacing:.01em}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.app{max-width:1180px;margin:0 auto;display:grid;grid-template-columns:200px minmax(0,1fr);gap:24px}
.rail{position:sticky;top:16px;align-self:start;display:flex;flex-direction:column;gap:4px}
.brand{padding:4px 12px 14px}
.brand b{font:700 22px var(--font-display);display:block;line-height:1.1}
.brand span{color:var(--muted);font-size:12px}
.nav{display:flex;align-items:center;gap:10px;padding:10px 12px;border:0;background:none;border-radius:8px;cursor:pointer;text-align:left;font-weight:500;color:var(--muted)}
.nav:hover{background:var(--surface)}
.nav[aria-current="page"]{background:var(--ink);color:var(--bg)}
.nav .badge{margin-left:auto}
.nav svg{width:18px;height:18px;flex:none}
.main{min-width:0;display:flex;flex-direction:column;gap:16px}
.head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.head h1{font-size:28px}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.btn{border:1px solid var(--line);background:var(--surface);padding:9px 14px;border-radius:8px;cursor:pointer;font-weight:600;display:inline-flex;gap:6px;align-items:center;text-decoration:none;color:var(--ink);min-height:40px}
.btn:hover{border-color:var(--ink)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.wa{background:#1f8f4a;border-color:#1f8f4a;color:#fff}
.btn.danger{color:var(--bad)}
.btn.sm{padding:5px 10px;min-height:32px;font-size:13px}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:16px;min-width:0}
.panel h2{font-size:18px;margin-bottom:10px}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:14px}
.stat small{color:var(--muted);text-transform:uppercase;letter-spacing:.06em;font-size:11px;font-weight:600}
.stat b{display:block;font:700 28px var(--font-display);font-variant-numeric:tabular-nums;margin-top:2px}
.stat.alert b{color:var(--bad)}
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px}
.tablewrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}
th{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);text-align:left;padding:8px 10px;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:10px;border-bottom:1px solid var(--line);vertical-align:middle}
tr:last-child td{border-bottom:0}
td.num,th.num{text-align:right}
.badge{display:inline-block;padding:2px 9px;border-radius:99px;font-size:12px;font-weight:600;white-space:nowrap}
.b-ok{background:var(--ok-soft);color:var(--ok)}.b-low{background:var(--warn-soft);color:var(--warn)}.b-out{background:var(--bad-soft);color:var(--bad)}.b-high{background:var(--info-soft);color:var(--info)}.b-n{background:var(--bg);color:var(--muted)}
.toolbar{display:flex;gap:10px;flex-wrap:wrap}
.toolbar input,.toolbar select{flex:1 1 180px}
input,select,textarea{background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:9px 11px;min-height:40px;width:100%;min-width:0}
label{display:flex;flex-direction:column;gap:4px;font-size:12px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
label input,label select,label textarea{text-transform:none;letter-spacing:0;font-weight:400;color:var(--ink);font-size:15px}
.form{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px}
.alerts{display:flex;flex-direction:column;gap:8px}
.alert-row{display:flex;gap:10px;align-items:center;justify-content:space-between;padding:10px 12px;border-radius:8px;background:var(--bg);flex-wrap:wrap}
.alert-row b{display:block}.alert-row small{color:var(--muted)}
.empty{color:var(--muted);padding:18px 4px;text-align:center}
.modal-bg{position:fixed;inset:0;background:rgba(10,14,20,.55);display:flex;align-items:flex-start;justify-content:center;padding:max(16px,env(safe-area-inset-top,0px)) 12px 16px;overflow:auto;z-index:50}
.modal{background:var(--surface);border-radius:12px;padding:18px;width:min(640px,100%);display:flex;flex-direction:column;gap:14px;margin:auto 0}
.modal h2{font-size:22px}
.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(84px + env(safe-area-inset-bottom,0px));background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:8px;z-index:60;max-width:90vw}
.sync{font-size:12px;color:var(--muted)}
.bill-lines td input{min-height:34px;padding:5px 8px}
.bill-lines .qty{width:70px}.bill-lines .rate{width:100px}
.totals{margin-left:auto;width:min(300px,100%);display:flex;flex-direction:column;gap:6px;font-variant-numeric:tabular-nums}
.totals div{display:flex;justify-content:space-between}
.totals .grand{font:700 22px var(--font-display);border-top:1px solid var(--line);padding-top:8px}
.preview{white-space:pre-wrap;background:var(--bg);border-radius:8px;padding:12px;font:13px/1.5 ui-monospace,Menlo,Consolas,monospace;max-height:260px;overflow:auto}
.tabbar{display:none}
@media (max-width:760px){
  .app{grid-template-columns:minmax(0,1fr)}
  .rail{display:none}
  .tabbar{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;left:0;right:0;bottom:0;background:var(--surface);border-top:1px solid var(--line);padding:6px max(6px,env(safe-area-inset-right,0px)) calc(6px + env(safe-area-inset-bottom,0px)) max(6px,env(safe-area-inset-left,0px));z-index:40}
  .tabbar .nav{flex-direction:column;gap:2px;font-size:11px;padding:6px 2px;align-items:center;position:relative}
  .tabbar .nav .badge{position:absolute;top:0;right:12px;margin:0;padding:0 6px}
  .head h1{font-size:24px}
}
@media (prefers-reduced-motion:no-preference){.modal{animation:pop .15s ease-out}@keyframes pop{from{transform:translateY(8px);opacity:0}}}

#printarea{display:none}
@media print{
  body{background:#fff!important;color:#000!important;padding:0!important}
  .app,.tabbar,#overlay,#overlay2,.toast{display:none!important}
  #printarea{display:block;color:#000;background:#fff;font:12px/1.4 Arial,sans-serif}
  .pr h1{font-size:20px;margin:0 0 4px}.pr h2{font-size:16px;margin:0 0 4px}
  .pr-h{display:flex;justify-content:space-between;gap:20px;margin:8px 0}
  .pr table{width:100%;border-collapse:collapse;margin:10px 0}
  .pr th,.pr td{border:1px solid #999;padding:4px 6px;text-align:left}.pr th{background:#eee}
  .pr-t{margin-left:auto;width:260px}.pr-t div{display:flex;justify-content:space-between;padding:2px 0}
  .pr-g{font-size:15px;font-weight:700;border-top:1px solid #000;margin-top:4px;padding-top:4px!important}
  .pr-m{color:#555;font-size:11px}
}
.auth{min-height:70vh;display:flex;align-items:center;justify-content:center}
.auth .panel{width:min(420px,100%);display:flex;flex-direction:column;gap:12px}
.auth h1{font-size:28px}
.langsel{display:flex;gap:6px;justify-content:center}
.langsel button{border:1px solid var(--line);background:var(--surface);border-radius:99px;padding:5px 12px;cursor:pointer;font-weight:600}
.langsel button[aria-pressed="true"]{background:var(--ink);color:var(--bg)}

body:not(.signed-in) .app,body:not(.signed-in) .tabbar{display:none}
.userbar{display:flex;flex-direction:column;gap:8px;padding:12px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.userbar b{color:var(--ink)}
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px 0;position:relative}
.auth-lang{position:absolute;top:8px;right:0}
.auth-card{width:min(440px,100%);background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:24px;display:flex;flex-direction:column;gap:14px}
.auth-card h1{font-size:28px}
.auth-sub,.auth-note{margin:0;color:var(--muted);font-size:13px}
.auth-err{background:var(--bad-soft);color:var(--bad);padding:10px 12px;border-radius:8px;font-weight:500}