:root {
  --bg: #f4f6f9; --panel: #ffffff; --ink: #0f1d2e; --muted: #5d6b7e; --line: #e3e8ef;
  --nav: #0d1b2a; --nav-ink: #c9d4e3; --nav-active: #1b2d44;
  --brand: #0e9f8f; --brand-ink: #ffffff; --brand-soft: #e3f6f3;
  --ok: #16a34a; --ok-soft: #e8f7ee; --warn: #d97706; --warn-soft: #fdf3e2;
  --crit: #dc2626; --crit-soft: #fdecec; --info: #2563eb; --info-soft: #e8f0fe;
  --radius: 12px; --shadow: 0 1px 2px rgba(16, 29, 46, .06), 0 2px 8px rgba(16, 29, 46, .04);
  --font: "Inter", "IBM Plex Sans Arabic", system-ui, -apple-system, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body { font-family: var(--font); font-size: 14px; color: var(--ink); background: var(--bg); line-height: 1.45; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 22px; margin: 0; font-weight: 650; }
h2 { font-size: 15px; margin: 0 0 12px; font-weight: 620; }
h3 { font-size: 13px; margin: 0 0 8px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; }
pre { background: #0f1d2e; color: #d6e2f0; padding: 12px 14px; border-radius: 10px; overflow-x: auto; margin: 6px 0 14px; direction: ltr; text-align: left; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.mono { font-family: ui-monospace, Menlo, monospace; font-size: 12.5px; }
.nowrap { white-space: nowrap; }

/* ---------- layout ---------- */
.layout { display: grid; grid-template-columns: 236px 1fr; min-height: 100vh; }
.sidebar { background: var(--nav); color: var(--nav-ink); padding: 18px 12px; position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; }
.brand { display: flex; align-items: center; gap: 10px; padding: 4px 10px 18px; color: #fff; font-weight: 700; font-size: 15px; }
.brand .logo { width: 32px; height: 32px; border-radius: 9px; background: linear-gradient(135deg, #14b8a6, #0e7490); display: grid; place-items: center; }
.brand small { display: block; font-weight: 400; color: #8da2bb; font-size: 11px; }
.nav a { display: flex; align-items: center; gap: 10px; padding: 9px 12px; border-radius: 9px; color: var(--nav-ink); font-weight: 500; margin-bottom: 2px; }
.nav a:hover { background: var(--nav-active); text-decoration: none; color: #fff; }
.nav a.active { background: var(--nav-active); color: #fff; box-shadow: inset 3px 0 0 var(--brand); }
[dir=rtl] .nav a.active { box-shadow: inset -3px 0 0 var(--brand); }
.nav .sep { height: 1px; background: #1f3047; margin: 10px 8px; }
.nav .badge { margin-inline-start: auto; background: var(--crit); color: #fff; border-radius: 99px; padding: 0 7px; font-size: 11px; font-weight: 600; }
.sidebar .foot { margin-top: auto; font-size: 11.5px; color: #7f93ab; padding: 10px; }
.main { min-width: 0; }
.topbar { display: flex; align-items: center; gap: 12px; padding: 14px 28px; background: var(--panel); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 500; }
.topbar .title { flex: 1; min-width: 0; }
.topbar .title .crumbs { font-size: 12px; color: var(--muted); }
.content { padding: 22px 28px 40px; max-width: 1500px; }
.menu-btn { display: none; }

/* ---------- components ---------- */
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; min-width: 0; }
.card + .card { margin-top: 18px; }
.grid > .card + .card { margin-top: 0; }
.card-head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.card-head h2 { margin: 0; flex: 1; }
.grid { display: grid; gap: 18px; }
.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g-main { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); }
.kpis { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; margin-bottom: 18px; }
.kpi { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow); }
.kpi .label { font-size: 12px; color: var(--muted); font-weight: 500; display: flex; gap: 6px; align-items: center; }
.kpi .value { font-size: 26px; font-weight: 680; margin-top: 4px; letter-spacing: -.01em; }
.kpi .value small { font-size: 14px; color: var(--muted); font-weight: 500; }
.kpi .sub { font-size: 12px; color: var(--muted); margin-top: 2px; }
.kpi.alert .value { color: var(--crit); }

.btn { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line); background: var(--panel); color: var(--ink); padding: 7px 13px; border-radius: 9px; font: inherit; font-weight: 550; cursor: pointer; line-height: 1.2; }
.btn:hover { background: #f1f4f8; text-decoration: none; }
.btn.primary { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); }
.btn.primary:hover { background: #0b8a7c; }
.btn.danger { color: var(--crit); border-color: #f3c4c4; }
.btn.danger:hover { background: var(--crit-soft); }
.btn.sm { padding: 4px 9px; font-size: 12.5px; border-radius: 7px; }
.btn[disabled] { opacity: .55; cursor: wait; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

form.inline { display: inline; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; align-items: end; }
label { display: block; font-size: 12px; font-weight: 550; color: var(--muted); margin-bottom: 4px; }
input, select, textarea { width: 100%; font: inherit; padding: 8px 10px; border: 1px solid #d3dae4; border-radius: 8px; background: #fff; color: var(--ink); }
input:focus, select:focus, textarea:focus { outline: 2px solid #9fe3d9; border-color: var(--brand); }
input[type=checkbox] { width: auto; }
textarea { min-height: 70px; }
.filters { display: flex; gap: 10px; flex-wrap: wrap; align-items: end; margin-bottom: 14px; }
.filters > div { min-width: 140px; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th { text-align: start; font-size: 11.5px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; padding: 8px 10px; border-bottom: 1px solid var(--line); white-space: nowrap; }
td { padding: 9px 10px; border-bottom: 1px solid #eef1f5; vertical-align: middle; }
tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #fafbfd; }
td.num, th.num { text-align: end; font-variant-numeric: tabular-nums; }

.pill { display: inline-flex; align-items: center; gap: 5px; padding: 2px 9px; border-radius: 99px; font-size: 11.5px; font-weight: 600; white-space: nowrap; background: #eef1f5; color: var(--muted); }
.pill.ok, .pill.online, .pill.active, .pill.resolved { background: var(--ok-soft); color: var(--ok); }
.pill.suspect, .pill.warning, .pill.ack, .pill.maintenance, .pill.provisioned { background: var(--warn-soft); color: var(--warn); }
.pill.invalid, .pill.critical, .pill.open, .pill.offline, .pill.retired { background: var(--crit-soft); color: var(--crit); }
.pill.info, .pill.lorawan { background: var(--info-soft); color: var(--info); }
.pill.zigbee { background: #f3e8ff; color: #7c3aed; }
.pill.logger { background: #e0f2fe; color: #0369a1; }
.pill.ip { background: var(--brand-soft); color: #0f766e; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; background: #b6c0cd; }
.dot.on { background: var(--ok); box-shadow: 0 0 0 3px var(--ok-soft); }
.dot.off { background: var(--crit); }

.flash { padding: 10px 14px; border-radius: 9px; margin-bottom: 14px; font-weight: 500; }
.flash.ok { background: var(--ok-soft); color: #166534; }
.flash.error { background: var(--crit-soft); color: #991b1b; }
.empty { padding: 26px; text-align: center; color: var(--muted); }

.chart-box { position: relative; height: 300px; }
.chart-box.sm { height: 210px; }
.map { height: 330px; border-radius: 10px; border: 1px solid var(--line); z-index: 1; }

.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
.tile { border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; cursor: pointer; background: #fff; }
.tile:hover, .tile.sel { border-color: var(--brand); background: var(--brand-soft); }
.tile .t-label { font-size: 12px; color: var(--muted); }
.tile .t-val { font-size: 20px; font-weight: 650; margin-top: 2px; }
.tile .t-val small { font-size: 12px; color: var(--muted); font-weight: 500; }

.alert-item { display: flex; gap: 10px; padding: 9px 0; border-bottom: 1px solid #eef1f5; align-items: flex-start; }
.alert-item:last-child { border-bottom: none; }
.alert-item .body { flex: 1; min-width: 0; }
.alert-item .msg { font-weight: 550; }

details.box { border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; background: #fff; }
details.box + details.box { margin-top: 10px; }
details.box summary { cursor: pointer; font-weight: 600; }
.kv { display: grid; grid-template-columns: 130px 1fr; gap: 6px 12px; font-size: 13px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; word-break: break-all; }
.copy { cursor: pointer; }

/* ---------- assistant ---------- */
.chat { display: flex; flex-direction: column; gap: 14px; min-height: 280px; }
.msg-q { align-self: flex-end; background: var(--brand); color: #fff; padding: 10px 14px; border-radius: 14px 14px 4px 14px; max-width: 75%; }
[dir=rtl] .msg-q { align-self: flex-start; border-radius: 14px 14px 14px 4px; }
.msg-a { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; max-width: 100%; }
.msg-a .answer { line-height: 1.55; }
.md h2:first-child, .md h3:first-child { margin-top: 0; }
.msg-a details { margin-top: 10px; }
.msg-a .err { color: var(--crit); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { border: 1px solid var(--line); border-radius: 99px; padding: 6px 12px; background: #fff; cursor: pointer; font-size: 13px; }
.chip:hover { border-color: var(--brand); color: var(--brand); }
.ask-bar { display: flex; gap: 10px; position: sticky; bottom: 0; background: var(--bg); padding: 12px 0; }
.ask-bar input { padding: 11px 14px; font-size: 15px; border-radius: 11px; }
.md h1, .md h2, .md h3 { margin: 14px 0 6px; text-transform: none; letter-spacing: 0; color: var(--ink); }
.md ul { padding-inline-start: 20px; }
.spinner { width: 16px; height: 16px; border: 2px solid #cfe9e5; border-top-color: var(--brand); border-radius: 50%; animation: spin .8s linear infinite; display: inline-block; vertical-align: middle; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- login ---------- */
.login-wrap { min-height: 100vh; display: grid; grid-template-columns: 1.1fr 1fr; }
.login-art { background: radial-gradient(circle at 20% 20%, #13405a 0, #0d1b2a 60%); color: #dbe7f3; padding: 56px; display: flex; flex-direction: column; justify-content: space-between; }
.login-art h1 { font-size: 34px; color: #fff; line-height: 1.15; margin: 16px 0 12px; }
.login-art ul { padding: 0; list-style: none; color: #a9bdd3; }
.login-art li { margin: 8px 0; display: flex; gap: 10px; }
.login-form { display: grid; place-items: center; padding: 40px; }
.login-form .card { width: 100%; max-width: 380px; padding: 28px; }

/* ---------- responsive ---------- */
@media (max-width: 1200px) { .kpis { grid-template-columns: repeat(3, minmax(0, 1fr)); } .g3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: fixed; inset: 0 auto 0 0; width: 250px; transform: translateX(-100%); transition: transform .2s; z-index: 1000; }
  [dir=rtl] .sidebar { inset: 0 0 0 auto; transform: translateX(100%); }
  .sidebar.open { transform: none; }
  .menu-btn { display: inline-flex; }
  .g2, .g3, .g-main { grid-template-columns: 1fr; }
  .kpis { grid-template-columns: 1fr 1fr; }
  .content, .topbar { padding-left: 16px; padding-right: 16px; }
  .login-wrap { grid-template-columns: 1fr; } .login-art { display: none; }
}

.period { display:flex; align-items:center; gap:6px; flex-wrap:wrap; }
.period input { width:auto; padding:4px 8px; font-size:12.5px; border-radius:7px; }