:root {
  --bg: #14181d;
  --panel: #1d232b;
  --panel2: #232b35;
  --text: #dde4ec;
  --muted: #8895a5;
  --accent: #3fa7ff;
  --red: #e74c3c;
  --amber: #f39c12;
  --green: #2ecc71;
  --border: #2c3642;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 -apple-system, "Segoe UI", Roboto, sans-serif;
  display: flex;
  flex-direction: column;
}

header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 14px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
header h1 { font-size: 16px; margin: 0 10px 0 0; font-weight: 600; }
header .spacer { flex: 1; }
nav { display: flex; gap: 4px; }
nav button {
  background: transparent;
  color: var(--muted);
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 6px 12px;
  cursor: pointer;
  font-size: 14px;
}
nav button.active { background: var(--panel2); color: var(--text); border-color: var(--border); }
nav button:hover { color: var(--text); }
.badge {
  background: var(--red);
  color: #fff;
  border-radius: 9px;
  padding: 1px 7px;
  font-size: 11px;
  margin-left: 4px;
}

select, input[type="text"], input[type="search"], input[type="number"], input[type="datetime-local"] {
  background: var(--panel2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 8px;
}

/* header search */
#searchBox { position: relative; }
#search { width: 240px; }
#searchResults {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  width: 380px;
  max-height: 60vh;
  overflow-y: auto;
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 8px 24px #0008;
  z-index: 2000;
}
#searchResults .hit {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  font-size: 13px;
}
#searchResults .hit:last-child { border-bottom: none; }
#searchResults .hit:hover { background: var(--panel); }
.muted { color: var(--muted); }

/* download menu */
#dlMenu { position: relative; }
#dlMenu summary {
  list-style: none;
  cursor: pointer;
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 10px;
  user-select: none;
}
#dlMenu summary::-webkit-details-marker { display: none; }
#dlMenu[open] summary { border-color: var(--accent); }
#dlMenu .menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 230px;
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 8px 24px #0008;
  z-index: 2000;
  padding: 4px 0;
}
#dlMenu .menu a {
  display: block;
  padding: 7px 14px;
  color: var(--text);
  text-decoration: none;
  font-size: 13px;
}
#dlMenu .menu a:hover { background: var(--panel); color: var(--accent); }

main { flex: 1; min-height: 0; }
.tab { display: none; height: 100%; }
.tab.active { display: block; }

/* map */
#tab-map.active { display: flex; }
#map { flex: 1; background: #0d1114; }
#mapControls {
  width: 230px;
  padding: 12px;
  background: var(--panel);
  border-left: 1px solid var(--border);
  overflow-y: auto;
}
#mapControls label { display: block; margin-bottom: 8px; cursor: pointer; }
#tolLabel { color: var(--muted); font-size: 12px; }
.legend { margin-top: 14px; font-size: 12px; color: var(--muted); }
.legend .row { display: flex; align-items: center; gap: 8px; margin-bottom: 4px; }
.legend .swatch { width: 14px; height: 14px; border-radius: 50%; display: inline-block; }
.legend .ring { border: 3px solid var(--red); background: transparent; }

/* tables */
section h2 { font-size: 15px; margin: 18px 16px 8px; }
section h2 .sub { font-weight: normal; font-size: 12px; color: var(--muted); margin-left: 10px; }
table { border-collapse: collapse; width: calc(100% - 32px); margin: 0 16px 20px; }
th, td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
tbody tr:hover { background: var(--panel2); }
td button {
  background: var(--panel2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 3px 10px;
  cursor: pointer;
}
td button:hover { border-color: var(--accent); }
.t-open { color: var(--red); font-weight: 600; }
.t-closed { color: var(--muted); }
.t-fail { color: var(--amber); }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 6px; }
.dot.on { background: var(--green); }
.dot.off { background: var(--muted); }

#tab-faults, #tab-units, #tab-stats { overflow-y: auto; }

/* stat cards (stats + compare summary) */
.cards {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 14px 16px 0;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 16px;
  min-width: 110px;
}
.card .v { font-size: 22px; font-weight: 600; }
.card .l { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.card .s { color: var(--muted); font-size: 11px; margin-top: 2px; }
.card.good .v { color: var(--green); }
.card.bad .v { color: var(--red); }

/* stats grid */
.statGrid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  padding: 14px 16px 20px;
}
.statGrid .panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px 0 10px;
  min-height: 120px;
}
.statGrid .panel h2 { margin: 12px 16px 10px; }
.statGrid .panel table { width: calc(100% - 32px); margin-bottom: 4px; }
.statGrid .muted { padding: 0 16px; }

/* horizontal bars (rssi histogram) */
.bars { padding: 0 16px; }
.bars .bar { display: flex; align-items: center; gap: 8px; margin-bottom: 5px; font-size: 12px; }
.bars .lbl { width: 78px; color: var(--muted); text-align: right; }
.bars .track { flex: 1; background: var(--panel2); border-radius: 3px; height: 14px; overflow: hidden; }
.bars .fill { display: block; height: 100%; }
.bars .n { width: 60px; }

/* vertical columns (daily activity) */
.cols { display: flex; align-items: flex-end; gap: 6px; height: 130px; padding: 0 16px 4px; }
.cols .col { display: flex; flex-direction: column; align-items: center; justify-content: flex-end; height: 100%; flex: 1; max-width: 46px; }
.cols .fill { display: block; width: 100%; background: var(--accent); border-radius: 3px 3px 0 0; }
.cols .lbl { font-size: 10px; color: var(--muted); margin-top: 4px; white-space: nowrap; }

/* compare tab */
#tab-compare.active { display: flex; flex-direction: column; }
#cmpBar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}
#cmpBar label { color: var(--muted); font-size: 13px; }
#cmpBody { flex: 1; display: flex; min-height: 0; }
#cmpMap { flex: 1; background: #0d1114; }
#cmpSide {
  width: 400px;
  overflow-y: auto;
  background: var(--panel);
  border-left: 1px solid var(--border);
}
#cmpSummary { padding-bottom: 10px; border-bottom: 1px solid var(--border); background: var(--panel); }
button.primary {
  background: var(--accent);
  color: #08111a;
  border: none;
  border-radius: 6px;
  padding: 6px 16px;
  font-weight: 600;
  cursor: pointer;
}
button.primary:hover { filter: brightness(1.1); }
tr.click { cursor: pointer; }

/* search highlight pulse */
.pulse { animation: pulse 1.2s ease-out infinite; }
@keyframes pulse { 0% { stroke-opacity: 1; } 100% { stroke-opacity: .25; } }

/* login page */
.loginBody { align-items: center; justify-content: center; }
.loginCard {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px 32px;
  width: 320px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.loginCard h1 { font-size: 18px; margin: 0 0 6px; text-align: center; }
.loginCard label { display: flex; flex-direction: column; gap: 5px; color: var(--muted); font-size: 13px; }
.loginCard input {
  background: var(--panel2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  font-size: 14px;
}
.loginCard .err { color: var(--red); text-align: center; font-size: 13px; }

/* header logout */
#logoutBtn {
  background: var(--panel2);
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 10px;
  cursor: pointer;
}
#logoutBtn:hover { color: var(--text); border-color: var(--accent); }