/* IoTixLab Pulse — Never Dark scoreboard */
* { box-sizing: border-box; margin: 0; }
:root {
  --bg: #0d1117; --panel: #161c26; --line: #232b3a;
  --text: #e6edf3; --dim: #8b98a9;
  --green: #00e676; --amber: #ffb300; --red: #ff5252; --accent: #4dd0e1;
}
body { background: var(--bg); color: var(--text);
  font: 15px/1.45 -apple-system, "Segoe UI", Roboto, "Noto Sans Bengali", sans-serif; }
main { max-width: 1280px; margin: 0 auto; padding: 20px 24px 60px; }
a { color: var(--accent); text-decoration: none; }

.topbar { display: flex; align-items: center; gap: 28px; padding: 12px 24px;
  background: var(--panel); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 5; }
.brand { color: var(--text); font-size: 19px; letter-spacing: .3px; }
.brand b { color: var(--green); }
.pulse-dot { display: inline-block; width: 11px; height: 11px; border-radius: 50%;
  background: var(--green); margin-right: 6px; animation: beat 1.6s ease infinite; }
.brand-logo { height: 22px; width: 22px; margin-right: 6px; vertical-align: -4px; }
@keyframes beat { 0%,100% { transform: scale(1); opacity: 1 } 50% { transform: scale(1.45); opacity: .55 } }
.topbar nav { display: flex; gap: 4px; flex: 1; }
.topbar nav a { color: var(--dim); padding: 7px 13px; border-radius: 7px; }
.topbar nav a.on, .topbar nav a:hover { color: var(--text); background: #1f2836; }
.tagline { color: var(--green); font-weight: 700; letter-spacing: 3px; font-size: 12px; }

h1 { font-size: 22px; } h2 { font-size: 17px; margin: 26px 0 10px; }
h3.span { margin-top: 10px; font-size: 14px; color: var(--accent); }
.hint { color: var(--dim); font-weight: 400; font-size: 13px; }
.page-head { display: flex; align-items: center; justify-content: space-between;
  gap: 16px; margin-bottom: 16px; flex-wrap: wrap; }

.kpi-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 12px; margin: 14px 0; }
.kpi { background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
  padding: 14px 16px; }
.kpi.big .kpi-num { font-size: 40px; }
.kpi-num { font-size: 26px; font-weight: 700; letter-spacing: .5px; }
.kpi-num small { font-size: .55em; color: var(--dim); }
.kpi-label { color: var(--dim); font-size: 12.5px; margin-top: 2px; }
.kpi.good { border-color: #1d5c3d; } .kpi.good .kpi-num { color: var(--green); }
.kpi.warn { border-color: #6b5416; } .kpi.warn .kpi-num { color: var(--amber); }
.kpi.bad  { border-color: #6e2b2b; } .kpi.bad  .kpi-num { color: var(--red); }

.wall { display: grid; grid-template-columns: repeat(auto-fill, minmax(86px, 1fr));
  gap: 7px; margin-top: 10px; }
.tile { border-radius: 8px; padding: 9px 6px; text-align: center; font-size: 10.5px;
  font-weight: 600; letter-spacing: .3px; border: 1px solid transparent; cursor: default;
  display: flex; align-items: center; justify-content: center; min-height: 34px; }
.tile span { display: block; word-break: break-all; overflow-wrap: anywhere;
  line-height: 1.25; max-width: 100%; }
a.tile { cursor: pointer; }
a.tile:hover { filter: brightness(1.35); border-color: var(--accent); }
table.grid.kv td:first-child { color: var(--dim); width: 40%; }
/* --- device vitals: signal bars, battery, backlog --- */
.vitals { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px; margin: 10px 0 16px; }
.vital { background: #0f1420; border: 1px solid var(--line); border-radius: 12px;
  padding: 12px 14px; text-align: center; }
.vital-num { font-size: 26px; font-weight: 700; margin-top: 6px; }
.vital-num small { font-size: .55em; color: var(--dim); }
.vital-label { color: var(--dim); font-size: 11.5px; margin-top: 2px; line-height: 1.35; }
.vital.good { border-color: #1d5c3d; } .vital.good .vital-num { color: var(--green); }
.vital.warn { border-color: #6b5416; } .vital.warn .vital-num { color: var(--amber); }
.vital.bad  { border-color: #6e2b2b; } .vital.bad  .vital-num { color: var(--red); }
.sigbars { display: flex; align-items: flex-end; justify-content: center; gap: 4px;
  height: 34px; }
.sigbars i { width: 9px; border-radius: 2px; background: #263042; }
.sigbars i.fill { background: currentColor; }
.vital.good .sigbars i.fill { background: var(--green); }
.vital.warn .sigbars i.fill { background: var(--amber); }
.vital.bad  .sigbars i.fill { background: var(--red); }
.battery { position: relative; width: 74px; height: 30px; margin: 2px auto;
  border: 2px solid var(--dim); border-radius: 6px; padding: 3px; }
.battery::after { content: ""; position: absolute; right: -7px; top: 8px;
  width: 5px; height: 10px; background: var(--dim); border-radius: 0 2px 2px 0; }
.battery.ram::after { display: none; }
.batt-fill { height: 100%; border-radius: 3px; background: var(--green); min-width: 2px; }
.vital.warn .batt-fill { background: var(--amber); }
.vital.bad .batt-fill { background: var(--red); }
.vital-icon { font-size: 26px; height: 34px; line-height: 34px; }

th[data-sort] { cursor: pointer; user-select: none; }
th[data-sort]:hover { color: var(--text); }
th.sorted-asc::after { content: " ▲"; color: var(--accent); }
th.sorted-desc::after { content: " ▼"; color: var(--accent); }
.tile.green { background: #0c3d26; color: #7dffb8; border-color: #14532d; }
.tile.dark  { background: #111; color: #ff8a80; border-color: #4a1f1f;
  animation: alarm 1.2s ease infinite; }
@keyframes alarm { 50% { border-color: var(--red); } }
.tile.off { background: #1a1f28; color: #5b6675; }
.tile.bat { background: #3a2d08; color: #ffd54f; border-color: #6b5416;
  animation: sickpulse 2.4s ease infinite; }
.tile.sun { background: #2a2140; color: #b39ddb; border-color: #4a3d6b;
  animation: sickpulse 2.4s ease infinite; }
.tile.sen { background: #3a1c08; color: #ffab91; border-color: #6b3a16;
  animation: sickpulse 2.4s ease infinite; }
/* portable = healthy but off-grid by design: a muted shade of the green tile */
.tile.port { background: #16301e; color: #9fd3a8; border-color: #29543a; }
@keyframes sickpulse { 50% { border-color: currentColor; } }

table.grid { width: 100%; border-collapse: collapse; background: var(--panel);
  border: 1px solid var(--line); border-radius: 12px; overflow: hidden; font-size: 13.5px; }
.grid th { text-align: left; color: var(--dim); font-weight: 600; font-size: 12px;
  padding: 9px 10px; border-bottom: 1px solid var(--line); background: #131926; }
.grid td { padding: 8px 10px; border-bottom: 1px solid var(--line); }
.grid tbody tr[onclick] { cursor: pointer; }
.grid tbody tr[onclick]:hover { background: #1b2330; }
.grid .r { text-align: right; } .nowrap { white-space: nowrap; }
.grid tr.total td { color: var(--dim); font-weight: 600; border-top: 2px solid var(--line); }
.grid tr.total.big td { color: var(--green); font-size: 15px; }

.pill { padding: 2px 9px; border-radius: 20px; font-size: 11.5px; font-weight: 600;
  background: #263042; color: var(--dim); }
.pill.ok { background: #0c3d26; color: #7dffb8; }
.pill.no { background: #46201f; color: #ff8a80; }
.pill.warn { background: #4a3a10; color: #ffd54f; }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
  padding: 18px; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 12px 16px; }
.form-grid .span { grid-column: 1 / -1; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 12.5px; color: var(--dim); }
input, select { background: #0f1420; color: var(--text); border: 1px solid var(--line);
  border-radius: 8px; padding: 8px 10px; font-size: 14px; width: 100%; }
input:focus, select:focus { outline: none; border-color: var(--accent); }
input.num { max-width: 130px; display: inline-block; }
input[readonly] { opacity: .55; }

.btn { display: inline-block; background: var(--green); color: #04160c; border: none;
  padding: 9px 18px; border-radius: 9px; font-size: 14px; font-weight: 700; cursor: pointer; }
.btn:hover { filter: brightness(1.12); }
.btn.ghost { background: transparent; color: var(--dim); border: 1px solid var(--line); }
.btn.small { padding: 4px 10px; font-size: 12px; }
.btn.danger { background: transparent; color: var(--red); border: 1px solid #6e2b2b; margin-top: 14px; }
.actions { display: flex; gap: 10px; }

/* --- v2: auth, customer boxes, assignment --- */
.whoami { margin-left: auto; color: var(--dim); font-size: 13px; text-align: right;
  display: flex; flex-direction: column; line-height: 1.25; }
.whoami b { color: var(--text); }
a.whoami:hover b { color: var(--accent); text-decoration: underline; }
.whoami small { font-size: 11px; }
.login-wrap { display: flex; justify-content: center; padding-top: 9vh; }
.login-card { width: 360px; }
.login-card h1 { margin-bottom: 4px; }

.cust-box { background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 14px 16px 16px; margin: 14px 0; }
.cust-box.trouble { border-color: #6e2b2b; }
.cust-box.mine { border-left: 3px solid var(--green); }
.cust-head { display: flex; align-items: baseline; justify-content: space-between;
  gap: 14px; flex-wrap: wrap; margin-bottom: 10px; }
.cust-name { font-size: 16px; font-weight: 700; letter-spacing: .3px; }
.cust-box .wall { margin-top: 0; }

.mine-row td:first-child { border-left: 3px solid var(--green); }
/* scoreboard health donut tile */
.kpi-donut { display: flex; align-items: center; gap: 14px; }
.kpi-donut svg { flex: none; }

/* fleet header charts */
.chart-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 14px; margin-bottom: 18px; }
.chart-tile h3 { margin: 0 0 10px; font-size: 14px; }
.chart-flex { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.donut-num { fill: var(--text); font-size: 26px; font-weight: 700; }
.donut-cap { fill: var(--dim); font-size: 11px; }
.chart-legend { list-style: none; padding: 0; margin: 0; font-size: 13px; flex: 1; min-width: 130px; }
.chart-legend li { display: flex; align-items: center; gap: 7px; padding: 2px 0; color: var(--text); }
.chart-legend .chip { width: 10px; height: 10px; border-radius: 3px; flex: none; }
.cover-num { font-size: 40px; font-weight: 700; line-height: 1.1; }
.cover-cap { color: var(--dim); margin-bottom: 12px; }
.meter { height: 10px; border-radius: 5px; background: var(--line); overflow: hidden; }
.meter-fill { height: 100%; border-radius: 5px; background: #3987e5; }
.cover-sub { color: var(--dim); font-size: 13px; margin-top: 8px; }

.assign-pool { max-height: 340px; overflow-y: auto; }
.assign-group { display: grid; grid-template-columns: repeat(auto-fill, minmax(175px, 1fr));
  gap: 6px; margin-bottom: 14px; }
.assign-group-head { grid-column: 1 / -1; padding-bottom: 4px; border-bottom: 1px solid var(--line); }
.assign-group-head a { font-size: 12px; }
.modal-backdrop { position: fixed; inset: 0; background: rgba(5, 8, 14, .72);
  display: flex; align-items: center; justify-content: center; z-index: 20; }
.modal { width: min(720px, 92vw); max-height: 84vh; overflow-y: auto; }
.modal-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
label.check { flex-direction: row; align-items: center; gap: 8px; color: var(--text);
  font-size: 13px; }
label.check input { width: auto; }
.page-head form.actions input, .page-head form.actions select { width: auto; }

.two-col { display: grid; grid-template-columns: 340px 1fr; gap: 26px; align-items: start; }
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; } }
.note { background: #131926; border-left: 3px solid var(--accent); padding: 10px 14px;
  border-radius: 0 8px 8px 0; color: var(--dim); font-size: 13px; margin: 12px 0; }