:root{
  --bg:#f3f6f5;--card:#fff;--ink:#12201d;--mute:#64748b;--line:#e3e9e7;
  --pri:#0f766e;--pri-d:#0b5a54;--pri-l:#e3f4f1;
  --ok:#15803d;--ok-l:#e3f6e9;--warn:#b45309;--warn-l:#fdf1dc;--bad:#b91c1c;--bad-l:#fde8e8;--info:#1d4ed8;--info-l:#e6eefe;
  --r:14px;--sh:0 1px 2px rgba(16,32,29,.05),0 6px 20px rgba(16,32,29,.05);
  --ease:cubic-bezier(.3,.7,.3,1);
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font-family:Inter,"Hind Siliguri",system-ui,-apple-system,"Segoe UI",sans-serif;background:var(--bg);color:var(--ink);font-size:14.5px;line-height:1.5;-webkit-font-smoothing:antialiased}
html[lang=bn] body{font-family:"Hind Siliguri",Inter,system-ui,sans-serif;font-size:15.5px}
h1,h2,h3,h4,p{margin:0}
a{color:var(--pri);text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
.ic{width:19px;height:19px;flex:none;vertical-align:-4px}

/* layout */
.app{display:grid;grid-template-columns:248px 1fr;min-height:100vh}
.side{background:var(--side,#0c2925);color:#dbe7e4;display:flex;flex-direction:column;position:sticky;top:0;height:100vh;z-index:30}
.brand{display:flex;align-items:center;gap:10px;padding:18px 18px 14px;color:#fff;font-weight:700;font-size:18px}
.brand i{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--pri);color:#fff}
.inst{margin:0 14px 10px;padding:8px 12px;border-radius:10px;background:rgba(255,255,255,.07);font-size:12.5px;line-height:1.35}
.brand span{font-size:15.5px;line-height:1.25}
.brand .logo{width:38px;height:38px;border-radius:10px;object-fit:cover;flex:none;background:#fff}
.brand i{flex:none}
.inst b{display:block;color:#fff;font-size:13.5px}
.nav{flex:1;overflow:auto;padding:4px 10px 14px;scrollbar-width:thin}
.nav small{display:block;padding:14px 10px 6px;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:rgba(255,255,255,.5)}
.nav a{display:flex;align-items:center;gap:11px;padding:9px 11px;border-radius:10px;color:rgba(255,255,255,.82);transition:background .2s var(--ease),color .2s var(--ease)}
.nav a:hover{background:rgba(255,255,255,.07);color:#fff}
.nav a.on{background:var(--pri);color:#fff}
.side-foot{padding:12px 16px;border-top:1px solid rgba(255,255,255,.08);font-size:12px;color:rgba(255,255,255,.6);line-height:1.6}
.side-foot a,.side-foot b{color:#fff;font-weight:600}
.main{min-width:0;display:flex;flex-direction:column}
.top{display:flex;align-items:center;gap:10px;padding:12px 22px;background:rgba(243,246,245,.9);backdrop-filter:blur(8px);position:sticky;top:0;z-index:20;border-bottom:1px solid var(--line)}
.top h1{font-size:18px;flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.top .menu{display:none}
.me{flex:none;display:flex;align-items:center;gap:9px;padding:4px 10px 4px 4px;border:1px solid var(--line);border-radius:999px;background:#fff}
.me>span:not(.av){font-size:13px;font-weight:600;line-height:1.15}
.me small{display:block;font-weight:500;color:var(--mute);font-size:11.5px}
.page{padding:22px;max-width:1280px;width:100%;margin:0 auto;flex:1}
.page.in{animation:fade .35s var(--ease)}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.foot{padding:14px 22px 22px;text-align:center;color:var(--mute);font-size:12.5px}
.tabbar{display:none}
.scrim{display:none}

/* blocks */
.head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:10px 14px;margin-bottom:16px}
.head>div:first-child{flex:1;min-width:200px}
.head h2{font-size:21px}
.head p{color:var(--mute);margin-top:2px}
.acts{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.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))}
.g21{grid-template-columns:minmax(0,2fr) minmax(0,1fr)}
.mt{margin-top:14px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh);padding:16px;min-width:0}
.card h3{font-size:15px;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.card h3 .sp{flex:1}
.stat{display:flex;gap:12px;align-items:center}
.stat i{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--pri-l);color:var(--pri);flex:none}
.stat i.warn{background:var(--warn-l);color:var(--warn)}.stat i.bad{background:var(--bad-l);color:var(--bad)}.stat i.info{background:var(--info-l);color:var(--info)}.stat i.ok{background:var(--ok-l);color:var(--ok)}
.stat b{display:block;font-size:20px;line-height:1.2}
.stat span{color:var(--mute);font-size:12.5px}
.muted{color:var(--mute)}.small{font-size:12.5px}.right{text-align:right}.center{text-align:center}.nowrap{white-space:nowrap}.bold{font-weight:600}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:9px 14px;border-radius:10px;border:1px solid var(--line);background:#fff;font-weight:600;font-size:13.5px;transition:background .2s var(--ease),border-color .2s var(--ease),transform .15s var(--ease),box-shadow .2s var(--ease);white-space:nowrap}
.btn:hover{border-color:#c5d3cf;box-shadow:0 2px 8px rgba(16,32,29,.08)}
.btn:active{transform:scale(.97)}
.btn.pri{background:var(--pri);border-color:var(--pri);color:#fff}.btn.pri:hover{background:var(--pri-d)}
.btn.bad{color:var(--bad)}
.btn.sm{padding:6px 10px;font-size:12.5px;border-radius:8px}
.btn .ic{width:16px;height:16px}

.badge{display:inline-block;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:600;background:#eef2f1;color:#475569;white-space:nowrap}
.badge.ok{background:var(--ok-l);color:var(--ok)}.badge.warn{background:var(--warn-l);color:var(--warn)}.badge.bad{background:var(--bad-l);color:var(--bad)}.badge.info{background:var(--info-l);color:var(--info)}

.av{--s:36px;width:var(--s);height:var(--s);border-radius:50%;display:inline-grid;place-items:center;color:#fff;font-weight:700;font-size:calc(var(--s)*.38);flex:none;object-fit:cover;vertical-align:middle}
.who{display:flex;align-items:center;gap:10px;min-width:0}
td .who{min-width:150px}
.who b{display:block;font-weight:600;line-height:1.25}
.who small{color:var(--mute)}

.tw{overflow-x:auto;margin:0 -16px -16px;border-top:1px solid var(--line)}
.card>.tw:first-child{border-top:0;margin-top:-16px}
table{border-collapse:collapse;width:100%;font-size:13.5px}
th{text-align:left;font-size:11.5px;text-transform:uppercase;letter-spacing:.05em;color:var(--mute);font-weight:600;padding:10px 16px;background:#f8faf9;white-space:nowrap}
td{padding:10px 16px;border-top:1px solid var(--line);vertical-align:middle}
tr.link{cursor:pointer;transition:background .2s var(--ease)}
tr.link:hover{background:#f6faf9}
.empty{padding:28px 16px;text-align:center;color:var(--mute)}

.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
input,select,textarea{border:1px solid var(--line);border-radius:10px;padding:9px 11px;background:#fff;outline:none;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);min-width:0}
input:focus,select:focus,textarea:focus{border-color:var(--pri);box-shadow:0 0 0 3px rgba(15,118,110,.15)}
.field{display:block;margin-bottom:12px}
.field>span{display:block;font-size:12.5px;font-weight:600;margin-bottom:5px;color:#334155}
.field input,.field select,.field textarea{width:100%}
.field input[disabled]{background:#f3f6f5;color:var(--mute)}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}
.lockd{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--mute)}

.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.chip{display:inline-flex;align-items:center;gap:7px;padding:6px 12px;border-radius:999px;border:1px solid var(--line);background:#fff;font-weight:600;font-size:13px;transition:all .2s var(--ease)}
.chip.on{background:var(--pri);border-color:var(--pri);color:#fff}

.seg{display:inline-flex;border:1px solid var(--line);border-radius:9px;overflow:hidden}
.seg button{border:0;background:#fff;padding:6px 12px;font-weight:700;font-size:12.5px;color:var(--mute);transition:background .2s var(--ease),color .2s var(--ease)}
.seg button+button{border-left:1px solid var(--line)}
.seg button.on[data-v=P]{background:var(--ok);color:#fff}.seg button.on[data-v=A]{background:var(--bad);color:#fff}.seg button.on[data-v=L]{background:var(--warn);color:#fff}

.list{display:flex;flex-direction:column}
.row{display:flex;align-items:center;gap:12px;padding:10px 0;border-top:1px solid var(--line)}
.row:first-child{border-top:0;padding-top:0}
.row>.gr{flex:1;min-width:0}
.row b{font-weight:600}
.kv{display:grid;grid-template-columns:auto 1fr;gap:7px 16px;font-size:13.5px}
.kv dt{color:var(--mute)}.kv dd{margin:0;font-weight:500;word-break:break-word}

.bars{display:flex;align-items:flex-end;gap:10px;height:150px;padding-top:8px}
.bars div{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:5px;height:100%;font-size:11.5px;color:var(--mute);min-width:0}
.bars u{display:block;width:100%;max-width:44px;border-radius:7px 7px 3px 3px;background:linear-gradient(var(--pri),var(--acc,#14b8a6));min-height:3px;animation:grow .7s var(--ease) both;transform-origin:bottom;text-decoration:none}
.bars b{font-size:11.5px;color:var(--ink)}
@keyframes grow{from{transform:scaleY(0)}}
.prog{height:8px;border-radius:99px;background:#e8eeec;overflow:hidden}
.prog u{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--pri),var(--acc,#14b8a6));animation:wide .8s var(--ease) both;transform-origin:left}
@keyframes wide{from{transform:scaleX(0)}}

.rt{min-width:720px}
.rt td{vertical-align:top}
.cell{display:block;width:100%;text-align:left;border:0;background:var(--pri-l);border-radius:9px;padding:7px 9px;font-size:12.5px;line-height:1.3;transition:background .2s var(--ease)}
.cell b{display:block;color:var(--pri-d)}
.cell small{color:var(--mute)}
button.cell:hover{filter:brightness(.95)}
.cell.now{outline:2px solid var(--pri)}

.cal{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}
.cal span{aspect-ratio:1;display:grid;place-items:center;border-radius:10px;font-size:13px;font-weight:600;background:#f1f5f4;color:var(--mute)}
.cal span.P{background:var(--ok-l);color:var(--ok)}.cal span.A{background:var(--bad-l);color:var(--bad)}.cal span.L{background:var(--warn-l);color:var(--warn)}.cal span.H{background:transparent;color:#b6c2bf}.cal em{font-style:normal;font-size:11px;text-align:center;color:var(--mute)}
.dots{display:flex;flex-wrap:wrap;gap:4px}
.dots i{width:12px;height:12px;border-radius:4px;background:#e2e8e6}
.dots i.P{background:#4ade80}.dots i.A{background:#f87171}.dots i.L{background:#fbbf24}

.podium{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;align-items:end;margin-bottom:14px}
.podium .card{text-align:center;padding:16px 10px}
.podium .p1{padding-top:26px;border-color:#f3cf66;background:linear-gradient(#fffaf0,#fff)}
.podium em{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;background:#e2e8f0;font-style:normal;font-weight:700;margin-bottom:8px}
.podium .p1 em{background:#fbbf24;color:#4a3200}.podium .p3 em{background:#f0b68a}

.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:14px;overflow-x:auto}
.tabs button{border:0;background:none;padding:9px 14px;font-weight:600;color:var(--mute);border-bottom:2px solid transparent;white-space:nowrap;transition:color .2s var(--ease),border-color .2s var(--ease)}
.tabs button.on{color:var(--pri);border-color:var(--pri)}

.note{padding:11px 13px;border-radius:10px;background:var(--info-l);color:#1e3a8a;font-size:13px;margin-bottom:14px;display:flex;gap:9px;align-items:flex-start}
.note.warn{background:var(--warn-l);color:#7c3a06}
.device{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.device .scr{width:74px;height:92px;border-radius:12px;background:#12201d;color:#5eead4;display:grid;place-items:center;flex:none}
.pulse{display:inline-block;width:9px;height:9px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 0 rgba(34,197,94,.6);animation:pulse 1.8s infinite}
@keyframes pulse{to{box-shadow:0 0 0 9px rgba(34,197,94,0)}}

.cnt{margin-left:auto;background:#ef4444;color:#fff;font-style:normal;font-size:11px;font-weight:700;min-width:19px;height:19px;border-radius:10px;display:grid;place-items:center;padding:0 5px;flex:none}
/* chat + assistant */
.chat{display:grid;grid-template-columns:300px minmax(0,1fr);padding:0;overflow:hidden;height:min(640px,calc(100vh - 210px));min-height:400px}
.clist{border-right:1px solid var(--line);overflow:auto}
.trow{display:flex;gap:10px;align-items:center;padding:12px 14px;border-bottom:1px solid var(--line);color:inherit;transition:background .2s var(--ease)}
.trow:hover,.trow.on{background:var(--pri-l)}
.trow .gr{flex:1;min-width:0}.trow b{display:block}
.tl{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.conv{display:flex;flex-direction:column;min-width:0;min-height:0}
.chead{display:flex;gap:10px;align-items:center;padding:10px 14px;border-bottom:1px solid var(--line)}
.chead .gr{flex:1;min-width:0}.chead .back{display:none}
.msgs{flex:1;overflow:auto;padding:14px;display:flex;flex-direction:column;gap:10px;background:#f6f9f8}
.msg{max-width:80%;display:flex;flex-direction:column;gap:3px;animation:fade .3s var(--ease)}
.msg.me{align-self:flex-end;align-items:flex-end}
.msg small{font-size:11px;color:var(--mute)}
.bub{padding:9px 13px;border-radius:14px;background:#fff;border:1px solid var(--line);line-height:1.5;word-break:break-word}
.msg.me .bub{background:var(--pri);color:#fff;border-color:var(--pri)}
.csend{display:flex;gap:8px;padding:10px 12px;border-top:1px solid var(--line)}
.csend input{flex:1}
.asst .msgs{min-height:120px;max-height:min(430px,52vh);flex:none;border-radius:12px;border:1px solid var(--line)}
.asst .csend{padding:0;border:0}
/* cameras + brand colours */
.cam .scr{position:relative;aspect-ratio:16/9;border-radius:10px;overflow:hidden;background:#101816;color:#7c938e}
.cam video{width:100%;height:100%;object-fit:cover;display:block}
.cam .ph{position:absolute;inset:0;display:grid;place-content:center;justify-items:center;gap:6px;font-size:12.5px}
.cam .live{position:absolute;left:8px;top:8px;background:rgba(0,0,0,.6);color:#fff;font-size:11px;font-weight:700;padding:3px 9px;border-radius:99px;display:flex;gap:6px;align-items:center}
.cam .live.off{color:#cbd5e1}
.sw{display:flex;flex-wrap:wrap;gap:9px;align-items:center}
.sw button{width:32px;height:32px;border-radius:50%;border:3px solid #fff;box-shadow:0 0 0 1px var(--line);transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
.sw button:hover{transform:scale(1.1)}
.sw button.on{box-shadow:0 0 0 2px var(--ink)}
.sw input{width:46px;height:36px;padding:2px}

/* modal + toast */
#modal{position:fixed;inset:0;z-index:60;display:none;align-items:center;justify-content:center;padding:16px;background:rgba(10,25,22,.45);opacity:0;transition:opacity .25s var(--ease)}
#modal.open{display:flex}#modal.show{opacity:1}
.dlg{background:#fff;border-radius:16px;width:min(520px,100%);max-height:calc(100vh - 32px);display:flex;flex-direction:column;transform:translateY(12px) scale(.98);transition:transform .28s var(--ease);box-shadow:0 20px 60px rgba(0,0,0,.25)}
.dlg.wide{width:min(760px,100%)}
#modal.show .dlg{transform:none}
.dlg header{display:flex;align-items:center;gap:10px;padding:14px 16px;border-bottom:1px solid var(--line)}
.dlg header h3{flex:1;font-size:16px}
.dlg header button{border:0;background:none;padding:6px;border-radius:8px;color:var(--mute)}
.dlg header button:hover{background:#f1f5f4}
.dlg .body{padding:16px;overflow:auto}
.dlg .ft{display:flex;justify-content:flex-end;gap:8px;margin-top:6px}
#toasts{position:fixed;left:50%;bottom:22px;transform:translateX(-50%);z-index:80;display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none;width:max-content;max-width:92vw}
.toast{background:#12201d;color:#fff;padding:10px 16px;border-radius:11px;font-size:13.5px;font-weight:500;box-shadow:0 8px 24px rgba(0,0,0,.25);animation:tin .3s var(--ease);transition:opacity .3s var(--ease),transform .3s var(--ease);display:flex;gap:8px;align-items:center}
.toast.bad{background:var(--bad)}.toast.out{opacity:0;transform:translateY(8px)}
@keyframes tin{from{opacity:0;transform:translateY(10px)}}

/* login */
.login{min-height:100vh;display:grid;grid-template-columns:1.05fr 1fr}
.login .hero{background:linear-gradient(150deg,var(--side,#0c2925),var(--pri));color:#fff;padding:48px;display:flex;flex-direction:column;justify-content:center;gap:18px}
.login .hero h1{font-size:34px;line-height:1.15;max-width:480px}
.login .hero p{color:#cfe9e4;max-width:460px;font-size:15.5px}
.login .hero ul{list-style:none;padding:0;margin:6px 0 0;display:grid;grid-template-columns:1fr 1fr;gap:9px 18px;max-width:480px;font-size:14px}
.login .hero li{display:flex;gap:8px;align-items:center}
.login .pane{padding:36px 28px;display:flex;flex-direction:column;justify-content:center;max-width:520px;width:100%;margin:0 auto}
.login .pane h2{font-size:22px;margin-bottom:4px}
.creds{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:16px 0}
.cred{text-align:left;border:1px solid var(--line);background:#fff;border-radius:12px;padding:11px 12px;transition:all .22s var(--ease);position:relative}
.cred:hover{border-color:var(--pri);box-shadow:0 4px 14px rgba(15,118,110,.14);transform:translateY(-1px)}
.cred b{display:flex;align-items:center;gap:7px;font-size:14px}
.cred code{display:block;font-size:12px;color:var(--mute);margin-top:4px;font-family:ui-monospace,Consolas,monospace}
.langsw{flex:none;display:inline-flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;background:#fff}
.langsw button{border:0;background:none;padding:6px 12px;font-size:12.5px;font-weight:700;color:var(--mute);transition:all .2s var(--ease)}
.langsw button.on{background:var(--pri);color:#fff}

/* print sheets */
.sheet{border:1px solid var(--line);border-radius:12px;padding:20px;background:#fff}
.sheet .sh{text-align:center;border-bottom:2px solid var(--pri);padding-bottom:10px;margin-bottom:12px}
.sheet .sh h2{font-size:19px;color:var(--pri-d)}
.sheet table th,.sheet table td{padding:7px 10px;border:1px solid var(--line)}
.idcard{width:250px;margin:0 auto;border-radius:14px;overflow:hidden;border:1px solid var(--line);text-align:center;background:#fff}
.idcard .tp{background:var(--pri);color:#fff;padding:12px 10px 34px;font-weight:700}
.idcard .av{margin-top:-28px;border:3px solid #fff}
.idcard .bd{padding:6px 14px 14px;font-size:12.5px}
.idcard .bd b{display:block;font-size:15px}

@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:900px){
  .app{grid-template-columns:1fr}
  .side{position:fixed;left:0;top:0;bottom:0;width:270px;transform:translateX(-102%);transition:transform .3s var(--ease);height:auto}
  .app.nav-open .side{transform:none}
  .scrim{display:block;position:fixed;inset:0;background:rgba(10,25,22,.45);z-index:25;opacity:0;pointer-events:none;transition:opacity .3s var(--ease)}
  .app.nav-open .scrim{opacity:1;pointer-events:auto}
  .top{padding:10px 14px}.top .menu{display:inline-flex;padding:8px}
  .me>span:not(.av){display:none}.me{padding:3px}
  .page{padding:14px 14px 90px}
  .foot{padding-bottom:92px}
  .g2,.g21{grid-template-columns:1fr}
  .tabbar{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;position:fixed;left:0;right:0;bottom:0;background:#fff;border-top:1px solid var(--line);z-index:22;padding:6px 4px calc(6px + env(safe-area-inset-bottom))}
  .tabbar a,.tabbar button{display:flex;flex-direction:column;align-items:center;gap:2px;font-size:10.5px;font-weight:600;color:var(--mute);border:0;background:none;padding:4px 2px;transition:color .2s var(--ease);min-width:0}
  .tabbar a.on{color:var(--pri)}
  .tabbar span{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  #toasts{bottom:84px}
  .chat{grid-template-columns:1fr;height:calc(100vh - 250px)}
  .chat.open .clist{display:none}
  .chat:not(.open) .conv{display:none}
  .chead .back{display:inline-flex}
  .login{grid-template-columns:1fr}
  .login .hero{padding:28px 22px}.login .hero h1{font-size:25px}.login .hero ul{display:none}
  .login .pane{padding:24px 18px 36px}
}
@media (max-width:560px){
  .g3,.g4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat{flex-direction:column;align-items:flex-start;gap:8px}
  .frow{grid-template-columns:1fr}
  .head h2{font-size:19px}
  .creds{grid-template-columns:1fr}
  td,th{padding:9px 12px}
  .podium{gap:8px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
@media print{
  body.printing>*:not(#modal){display:none!important}
  body.printing #modal{position:static;display:block;background:none;padding:0;opacity:1}
  body.printing .dlg{box-shadow:none;width:100%;max-height:none;transform:none}
  body.printing .dlg header,body.printing .noprint{display:none!important}
  body.printing .dlg .body{overflow:visible;padding:0}
}