:root{
  --brand:#0f766e; --brand-d:#0b5a54; --brand-l:#e6f4f2;
  --ink:#1e293b; --muted:#64748b; --line:#e2e8f0; --bg:#f4f6f9; --card:#fff; --side:#0f172a;
  --radius:10px;
}
html,body{background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans Bengali","Noto Sans",Arial,sans-serif;font-size:14.5px}
a{color:var(--brand)}
a:hover{color:var(--brand-d)}
.btn-primary{--bs-btn-bg:var(--brand);--bs-btn-border-color:var(--brand);--bs-btn-hover-bg:var(--brand-d);--bs-btn-hover-border-color:var(--brand-d);--bs-btn-active-bg:var(--brand-d);--bs-btn-active-border-color:var(--brand-d)}
.btn-outline-primary{--bs-btn-color:var(--brand);--bs-btn-border-color:var(--brand);--bs-btn-hover-bg:var(--brand);--bs-btn-hover-border-color:var(--brand)}

/* layout */
.app{display:flex;min-height:100vh}
.sidebar{width:248px;background:var(--side);color:#cbd5e1;flex:0 0 248px;position:fixed;inset:0 auto 0 0;overflow-y:auto;z-index:1030;transition:transform .2s}
.sidebar .brand{padding:18px 20px;font-weight:700;color:#fff;font-size:16px;border-bottom:1px solid #1e293b;display:flex;align-items:center;gap:10px}
.sidebar .brand span.dot{width:10px;height:10px;border-radius:50%;background:#34d399;display:inline-block}
.sidebar .sec{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:#64748b;padding:16px 20px 6px}
.sidebar a.nav-link{color:#cbd5e1;padding:8px 20px;display:flex;align-items:center;justify-content:space-between;border-left:3px solid transparent;font-size:14px}
.sidebar a.nav-link:hover{background:#111c33;color:#fff}
.sidebar a.nav-link.active{background:#13213d;color:#fff;border-left-color:#34d399}
.sidebar .badge{font-weight:600}
.main{margin-left:248px;flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{background:#fff;border-bottom:1px solid var(--line);padding:10px 22px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:1020}
.content{padding:22px;max-width:1280px;width:100%}
.menu-btn{display:none}
@media (max-width:991px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.open{transform:none;box-shadow:0 0 0 100vmax rgba(15,23,42,.45)}
  .main{margin-left:0}
  .menu-btn{display:inline-block}
  .content{padding:14px}
}

/* cards & tables */
.card{border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 1px 2px rgba(15,23,42,.04)}
.card-header{background:#fff;font-weight:600;border-bottom:1px solid var(--line)}
.stat{padding:14px 16px}
.stat .n{font-size:26px;font-weight:700;line-height:1.1}
.stat .l{color:var(--muted);font-size:12.5px;margin-top:2px}
.stat.warn .n{color:#b45309}
.stat.bad .n{color:#b91c1c}
.table{--bs-table-bg:transparent}
.table thead th{font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);border-bottom:1px solid var(--line);white-space:nowrap}
.table td{vertical-align:middle}
.page-title{font-size:20px;font-weight:700;margin:0}
.muted{color:var(--muted)}
.trunc{max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.wrap-pre{white-space:pre-wrap;word-break:break-word}
.form-label{font-weight:600;font-size:13px}
.filters .form-control,.filters .form-select{min-width:140px}
progress.bar{width:100%;height:10px;accent-color:var(--brand)}
.code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px}

/* chat */
.chat{background:#efeae2;border-radius:var(--radius);padding:16px;max-height:68vh;overflow-y:auto}
.bubble{max-width:78%;padding:8px 12px;border-radius:10px;margin-bottom:10px;box-shadow:0 1px 1px rgba(0,0,0,.08);word-break:break-word;white-space:pre-wrap}
.bubble.in{background:#fff;margin-right:auto}
.bubble.out{background:#d9fdd3;margin-left:auto}
.bubble .meta{font-size:11px;color:#667781;margin-top:4px;white-space:normal}
.wa-preview{background:#efeae2;border-radius:10px;padding:14px}
.wa-preview .bubble{margin:0;background:#d9fdd3;max-width:100%}

/* auth */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;background:linear-gradient(135deg,#0f172a,#0f766e)}
.auth-card{width:100%;max-width:410px;background:#fff;border-radius:14px;padding:30px;box-shadow:0 20px 50px rgba(0,0,0,.3)}
.auth-card h1{font-size:20px;font-weight:700}
.pager .page-link{color:var(--brand)}
.pager .active .page-link{background:var(--brand);border-color:var(--brand);color:#fff}
.hint{font-size:12.5px;color:var(--muted)}
.tag{display:inline-block;background:var(--brand-l);color:var(--brand-d);border-radius:20px;padding:1px 9px;font-size:12px;margin:1px 2px 1px 0}

.logbox{background:#0f172a;color:#e2e8f0;padding:.75rem 1rem;border-radius:.5rem;max-height:520px;overflow:auto;font-size:.78rem;white-space:pre-wrap;word-break:break-all}
tr.subrow>td{background:#f8fafc;border-top:0;padding-top:.35rem;padding-bottom:.6rem}
.auth-card.auth-wide{max-width:640px}