:root {
  --bg: #0E131A; --panel: #151C26; --panel2: #1B2431; --border: #263244; --text: #E6EDF5; --muted: #8494A9;
  --accent: #0DCC03; --accent-text: #0E131A; --ok: #2ECC71; --warn: #F5A623; --err: #FF5C5C; --info: #4FA3FF;
  --l1: #D2874E; --l2: #ECEFF4; --l3: #8EA3BE; --sum: #0DCC03;
  --radius: 10px; --nav-w: 200px; --top-h: 56px;
  --mono: "Consolas", "SFMono-Regular", ui-monospace, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.4 "Segoe UI", system-ui, -apple-system, Roboto, sans-serif; }
a { color: var(--accent); text-decoration: none; }
button, input, select, textarea { font: inherit; color: var(--text); }
.hidden { display: none !important; }

/* górny pasek */
.topbar { position: fixed; inset: 0 0 auto 0; height: var(--top-h); display: flex; align-items: center; gap: 14px;
  padding: 0 14px; padding-top: env(safe-area-inset-top); background: var(--panel); border-bottom: 1px solid var(--border); z-index: 20; }
.brand { display: flex; align-items: center; gap: 8px; color: var(--text); }
.brand img { height: 30px; }
.brand-sub { font-weight: 700; color: var(--muted); letter-spacing: .5px; }
.site { font-weight: 600; flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.topbar-right { display: flex; align-items: center; gap: 8px; }
.pill { border: 1px solid var(--border); border-radius: 14px; padding: 3px 10px; color: var(--muted); font-size: 13px; }
.pill.ok { color: var(--ok); border-color: var(--ok); }
.pill.warn { color: var(--warn); border-color: var(--warn); }
.pill.err { color: var(--err); border-color: var(--err); }
.icon-btn { background: none; border: 1px solid var(--border); border-radius: 8px; padding: 4px 9px; cursor: pointer; }

/* nawigacja: bok na komputerze, dół na telefonie */
.nav { position: fixed; top: var(--top-h); left: 0; bottom: 0; width: var(--nav-w); padding: 12px 8px;
  background: var(--panel); border-right: 1px solid var(--border); display: flex; flex-direction: column; gap: 4px; z-index: 15; }
.nav a { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 8px; color: var(--muted); font-weight: 600; }
.nav a span { width: 20px; text-align: center; font-size: 17px; }
.nav a.active { background: var(--panel2); color: var(--text); box-shadow: inset 3px 0 0 var(--accent); }
main { margin-left: var(--nav-w); padding: calc(var(--top-h) + 16px) 18px 24px; max-width: 1600px; }
@media (max-width: 820px) {
  .nav { top: auto; left: 0; right: 0; bottom: 0; width: auto; height: calc(60px + env(safe-area-inset-bottom));
    flex-direction: row; justify-content: space-around; padding: 4px 4px env(safe-area-inset-bottom);
    border-right: none; border-top: 1px solid var(--border); }
  .nav a { flex-direction: column; gap: 2px; padding: 6px 4px; font-size: 11px; flex: 1; text-align: center; }
  .nav a.active { box-shadow: inset 0 3px 0 var(--accent); }
  main { margin-left: 0; padding: calc(var(--top-h) + 12px) 10px calc(76px + env(safe-area-inset-bottom)); }
  .brand-sub, #conn-pill { display: none; }
}

/* elementy */
h1 { font-size: 20px; margin: 0 0 12px; } h2 { font-size: 15px; margin: 0 0 10px; color: var(--muted); text-transform: uppercase; letter-spacing: .4px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; margin-bottom: 14px; }
.grid { display: grid; gap: 12px; }
.tiles { grid-template-columns: repeat(auto-fill, minmax(165px, 1fr)); }
.cards { grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); }
.tile { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 14px; border-left: 4px solid var(--accent); }
.tile .t { color: var(--muted); font-size: 12px; font-weight: 600; text-transform: uppercase; }
.tile .v { font-size: 26px; font-weight: 650; margin-top: 2px; white-space: nowrap; }
.tile .u { color: var(--muted); font-size: 14px; margin-left: 4px; font-weight: 400; }
.tile .s { color: var(--muted); font-size: 12px; }
.dev { cursor: pointer; transition: border-color .15s; }
.dev:hover { border-color: var(--accent); }
.dev-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; margin-bottom: 8px; }
.dev-name { font-weight: 650; }
.dev-cat { color: var(--muted); font-size: 12px; }
.kv { display: grid; grid-template-columns: 1fr auto; gap: 3px 12px; font-size: 14px; }
.kv .k { color: var(--muted); } .kv .v { font-family: var(--mono); text-align: right; }
.badge { display: inline-block; border-radius: 10px; padding: 1px 8px; font-size: 12px; font-weight: 600; border: 1px solid; }
.badge.ok { color: var(--ok); } .badge.err { color: var(--err); } .badge.warn { color: var(--warn); } .badge.muted { color: var(--muted); }
.sev-critical { color: var(--err); } .sev-warning { color: var(--warn); } .sev-info { color: var(--info); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; color: var(--muted); font-weight: 600; padding: 6px 8px; border-bottom: 1px solid var(--border); white-space: nowrap; }
td { padding: 6px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
td.num { font-family: var(--mono); text-align: right; white-space: nowrap; }
.table-wrap { overflow-x: auto; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
.muted { color: var(--muted); } .small { font-size: 12px; } .mono { font-family: var(--mono); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { border: 1px solid var(--border); background: var(--panel2); border-radius: 16px; padding: 4px 12px; cursor: pointer; font-size: 13px; color: var(--muted); }
.chip.on { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 600; }
.btn { background: var(--panel2); border: 1px solid var(--border); border-radius: 8px; padding: 7px 14px; cursor: pointer; }
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); font-weight: 650; }
.btn.danger { color: var(--err); border-color: var(--err); }
.btn:disabled { opacity: .5; cursor: default; }
input, select, textarea { background: var(--panel2); border: 1px solid var(--border); border-radius: 8px; padding: 7px 9px; width: 100%; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
input[type=checkbox] { width: auto; accent-color: var(--accent); }
label { display: block; font-size: 13px; color: var(--muted); margin: 8px 0 3px; }
.form { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 0 14px; }
.check { display: flex; gap: 8px; align-items: center; color: var(--text); font-size: 14px; margin-top: 12px; }
.chart-box { position: relative; height: 320px; }
.chart-box canvas { width: 100%; height: 100%; display: block; touch-action: pan-y; }
@media (max-width: 820px) { .chart-box { height: 240px; } }
.legend { display: flex; flex-wrap: wrap; gap: 10px; font-size: 13px; margin-top: 6px; }
.legend span { cursor: pointer; display: inline-flex; align-items: center; gap: 5px; }
.legend i { width: 14px; height: 3px; display: inline-block; border-radius: 2px; }
.legend .off { opacity: .35; }
.notice { border-left: 4px solid var(--warn); background: var(--panel2); padding: 10px 12px; border-radius: 6px; margin-bottom: 12px; font-size: 14px; }
.notice.err { border-color: var(--err); } .notice.ok { border-color: var(--ok); }
.loading { color: var(--muted); padding: 40px; text-align: center; }
.toast { position: fixed; left: 50%; bottom: 90px; transform: translateX(-50%); background: var(--panel2); border: 1px solid var(--border);
  padding: 10px 16px; border-radius: 8px; opacity: 0; transition: opacity .2s; pointer-events: none; z-index: 50; max-width: 90vw; }
.toast.show { opacity: 1; }
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: flex; align-items: flex-start; justify-content: center;
  padding: 60px 10px 20px; z-index: 40; overflow-y: auto; }
.modal-card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; width: min(720px, 100%); }
.login { max-width: 380px; margin: 12vh auto 0; }
.login img { height: 44px; margin-bottom: 8px; }
.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
.section-title { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-bottom: 8px; }
.vgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 0 24px; }
.vrow { display: flex; justify-content: space-between; gap: 10px; padding: 5px 2px; border-bottom: 1px solid var(--border); font-size: 14px; }
.vrow .v { font-family: var(--mono); white-space: nowrap; text-align: right; }
summary { cursor: pointer; }
.stale { color: var(--muted); font-style: italic; }