:root{
  --bg:#f6f7f9;--card:#fff;--text:#18181b;--muted:#6b7280;--line:#e5e7eb;--brand:#4f46e5;--brand-2:#4338ca;--brand-soft:#eef2ff;
  --ok:#059669;--ok-soft:#ecfdf5;--warn:#b45309;--warn-soft:#fffbeb;--err:#b91c1c;--err-soft:#fef2f2;--radius:12px;
}
*{box-sizing:border-box}
html,body{margin:0}
body{font:14.5px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans","Noto Sans Devanagari",sans-serif;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.25;margin:0 0 .5em}
h1{font-size:24px}h2{font-size:18px}h3{font-size:15px}
p{margin:0 0 .8em}
code,pre{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px}
pre{background:#0f172a;color:#e2e8f0;padding:14px 16px;border-radius:10px;overflow:auto;white-space:pre-wrap;word-break:break-all}
small,.muted{color:var(--muted)}
.mono{font-family:ui-monospace,Menlo,monospace}

/* Layout */
.shell{display:flex;min-height:100vh}
.side{width:236px;flex:none;background:#111827;color:#d1d5db;padding:18px 12px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.side .logo{display:flex;align-items:center;gap:9px;color:#fff;font-weight:700;font-size:17px;padding:4px 10px 18px}
.side .logo span{width:30px;height:30px;border-radius:9px;background:var(--brand);display:flex;align-items:center;justify-content:center;font-size:15px}
.side nav a{display:flex;align-items:center;justify-content:space-between;color:#d1d5db;padding:8px 10px;border-radius:8px;margin-bottom:2px;font-size:14px}
.side nav a:hover{background:#1f2937;text-decoration:none;color:#fff}
.side nav a.on{background:#1f2937;color:#fff;font-weight:600}
.side nav .sec{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:#6b7280;padding:14px 10px 6px}
.side .badge{background:#ef4444;color:#fff;border-radius:999px;font-size:11px;padding:0 7px;line-height:18px}
.side .foot{margin-top:auto;font-size:13px;padding:10px;border-top:1px solid #1f2937}
.side .foot button{background:none;border:0;color:#9ca3af;padding:0;cursor:pointer;font:inherit}
.main{flex:1;min-width:0;padding:26px 32px 60px;max-width:1180px}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px;flex-wrap:wrap}
.topbar h1{margin:0}
.banner{padding:11px 16px;border-radius:10px;margin-bottom:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.banner.warn{background:var(--warn-soft);color:var(--warn);border:1px solid #fde68a}
.banner.err{background:var(--err-soft);color:var(--err);border:1px solid #fecaca}
.banner.info{background:var(--brand-soft);color:var(--brand-2);border:1px solid #c7d2fe}
.mobile-nav{display:none}

/* Components */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin-bottom:18px}
.card h2{display:flex;align-items:center;justify-content:space-between;gap:10px}
.card-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:12px;flex-wrap:wrap}
.card-head h2{margin:0}
.grid{display:grid;gap:16px}
.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))}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}
.stat .k{font-size:12.5px;color:var(--muted);margin-bottom:4px}
.stat .v{font-size:24px;font-weight:700;letter-spacing:-.01em}
.stat .s{font-size:12.5px;color:var(--muted)}
.bar{height:8px;background:#eef0f3;border-radius:99px;overflow:hidden;margin-top:8px}
.bar i{display:block;height:100%;background:var(--brand);border-radius:99px}
.bar.hot i{background:#f59e0b}.bar.full i{background:#ef4444}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--brand);color:#fff;border:1px solid var(--brand);border-radius:9px;padding:8px 15px;font:inherit;font-weight:600;font-size:14px;cursor:pointer;text-decoration:none;white-space:nowrap}
.btn:hover{background:var(--brand-2);text-decoration:none}
.btn.sec{background:#fff;color:var(--text);border-color:var(--line)}
.btn.sec:hover{background:#f9fafb}
.btn.danger{background:#fff;color:var(--err);border-color:#fecaca}
.btn.danger:hover{background:var(--err-soft)}
.btn.sm{padding:5px 10px;font-size:13px;border-radius:7px}
.btn.lg{padding:12px 22px;font-size:15.5px}
.btn:disabled{opacity:.55;cursor:default}
.link-btn{background:none;border:0;color:var(--brand);font:inherit;cursor:pointer;padding:0}
.link-btn.danger{color:var(--err)}
form.inline{display:inline}

label{display:block;font-weight:600;font-size:13.5px;margin:0 0 5px}
.field{margin-bottom:15px}
.field .hint{font-size:12.5px;color:var(--muted);margin-top:4px;font-weight:400}
input[type=text],input[type=email],input[type=password],input[type=url],input[type=number],input[type=date],input[type=tel],input[type=search],select,textarea{
  width:100%;border:1px solid #d1d5db;border-radius:9px;padding:9px 12px;font:inherit;background:#fff;color:var(--text);outline:none}
input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(79,70,229,.12)}
textarea{resize:vertical;min-height:84px}
input[type=color]{width:52px;height:38px;border:1px solid #d1d5db;border-radius:9px;padding:3px;background:#fff}
.check{display:flex;align-items:center;gap:8px;font-weight:500}
.check input{width:16px;height:16px}
.row{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap}
.row>*{flex:1;min-width:140px}
.row>.none{flex:none;min-width:0}

table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);font-weight:600;background:#fafafa}
tr:last-child td{border-bottom:0}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
.table-wrap table th:first-child,.table-wrap table td:first-child{padding-left:16px}
td.num,th.num{text-align:right}
.trunc{max-width:340px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.pill{display:inline-block;font-size:12px;font-weight:600;padding:1px 9px;border-radius:999px;background:#f3f4f6;color:#374151;white-space:nowrap}
.pill.ok{background:var(--ok-soft);color:var(--ok)}
.pill.warn{background:var(--warn-soft);color:var(--warn)}
.pill.err{background:var(--err-soft);color:var(--err)}
.pill.info{background:var(--brand-soft);color:var(--brand-2)}

.flash{padding:11px 15px;border-radius:10px;margin-bottom:14px;font-weight:500}
.flash.success{background:var(--ok-soft);color:#065f46;border:1px solid #a7f3d0}
.flash.error{background:var(--err-soft);color:var(--err);border:1px solid #fecaca}
.flash.info{background:var(--brand-soft);color:var(--brand-2);border:1px solid #c7d2fe}

.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:20px;overflow-x:auto}
.tabs a{padding:9px 14px;color:var(--muted);font-weight:600;border-bottom:2px solid transparent;margin-bottom:-1px;white-space:nowrap}
.tabs a:hover{color:var(--text);text-decoration:none}
.tabs a.on{color:var(--brand);border-color:var(--brand)}

.empty{text-align:center;padding:34px 20px;color:var(--muted)}
.empty strong{display:block;color:var(--text);font-size:15px;margin-bottom:4px}
.steps{list-style:none;padding:0;margin:0}
.steps li{display:flex;gap:10px;align-items:center;padding:9px 0;border-bottom:1px dashed var(--line)}
.steps li:last-child{border:0}
.steps .tick{width:22px;height:22px;border-radius:50%;border:2px solid #d1d5db;flex:none;display:flex;align-items:center;justify-content:center;font-size:12px;color:#fff}
.steps li.done .tick{background:var(--ok);border-color:var(--ok)}
.steps li.done span.t{color:var(--muted);text-decoration:line-through}
.chart{display:flex;align-items:flex-end;gap:4px;height:120px;padding-top:8px}
.chart div{flex:1;background:var(--brand-soft);border-radius:4px 4px 0 0;position:relative;min-height:2px}
.chart div:hover{background:#c7d2fe}
.chart div span{position:absolute;bottom:100%;left:50%;transform:translateX(-50%);font-size:11px;color:var(--muted)}
.bubble{padding:10px 14px;border-radius:14px;max-width:78%;margin-bottom:8px;white-space:pre-wrap;word-wrap:break-word}
.bubble.user{background:var(--brand);color:#fff;margin-left:auto;border-bottom-right-radius:4px}
.bubble.assistant{background:#f3f4f6;border-bottom-left-radius:4px}
.bubble .meta{display:block;font-size:11px;opacity:.7;margin-top:4px}
details summary{cursor:pointer;font-weight:600}
.pager{display:flex;gap:6px;justify-content:center;margin-top:16px}
.kv{display:grid;grid-template-columns:160px 1fr;gap:6px 16px}
.kv dt{color:var(--muted)}.kv dd{margin:0}

/* Auth pages */
.auth{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:30px 16px;background:linear-gradient(160deg,#eef2ff,#f6f7f9 50%)}
.auth .box{width:100%;max-width:420px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px;box-shadow:0 10px 40px rgba(17,24,39,.06)}
.auth .logo{display:flex;align-items:center;gap:9px;font-weight:700;font-size:18px;margin-bottom:20px;color:var(--text)}
.auth .logo span{width:32px;height:32px;border-radius:9px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center}

@media (max-width:900px){
  .side{display:none}
  .mobile-nav{display:flex;gap:4px;overflow-x:auto;background:#111827;padding:10px 12px;position:sticky;top:0;z-index:5}
  .mobile-nav a{color:#d1d5db;padding:6px 10px;border-radius:7px;white-space:nowrap;font-size:13.5px}
  .mobile-nav a.on{background:#1f2937;color:#fff}
  .shell{display:block}
  .main{padding:18px 14px 50px}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .kv{grid-template-columns:1fr}
}
@media print{.side,.mobile-nav,.no-print{display:none!important}.main{padding:0}body{background:#fff}}
.hint code,.field code{word-break:break-all}