:root {
  --bg: #0c0e13;
  --panel: #15181f;
  --panel-2: #1a1d25;
  --border: #2a2f3a;
  --text: #e7eaf3;
  --muted: #8a92a6;
  --accent: #5fa8ff;
  --green: #5dd39e;
  --red: #ff6b8a;
  --amber: #ffb454;
  --violet: #b58cff;
  --code: #1a1d25;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
  min-height: 100vh;
}

header.app {
  padding: 12px 22px;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 24px;
  align-items: center;
  flex-wrap: wrap;
  background: linear-gradient(180deg, #0e1117 0%, #0c0e13 100%);
  position: sticky;
  top: 0;
  z-index: 50;
}
header.app h1 {
  font-size: 16px;
  margin: 0;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 10px;
}
header.app h1 .pulse {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 0 rgba(93,211,158,0.7);
  animation: pulse 2.4s infinite;
}
header.app h1 .pulse.lost { background: var(--red); animation: none; }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(93,211,158,0.55); }
  70% { box-shadow: 0 0 0 8px rgba(93,211,158,0); }
  100% { box-shadow: 0 0 0 0 rgba(93,211,158,0); }
}
header.app nav { display: flex; gap: 14px; flex-wrap: wrap; }
header.app nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
  padding: 4px 8px;
  border-radius: 4px;
}
header.app nav a:hover { color: var(--text); background: var(--panel); }
header.app nav a.active { color: var(--text); background: var(--panel-2); }

.spacer { flex: 1; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.muted { color: var(--muted); }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; }

main {
  padding: 20px;
  max-width: 1400px;
  margin: 0 auto;
}

.grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}
.grid.cards {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.grid.cards.cols-4 {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
}
.panel h2 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--muted);
  margin: 0 0 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.panel h2 .pill {
  font-size: 10px;
  background: var(--panel-2);
  padding: 1px 6px;
  border-radius: 10px;
  letter-spacing: 0.5px;
}
.panel.span-2 { grid-column: span 2; }
@media (max-width: 720px) { .panel.span-2 { grid-column: span 1; } }

.kpi {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.kpi .value {
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.5px;
}
.kpi .label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--muted);
}
.kpi .delta {
  font-size: 12px;
  color: var(--muted);
}
.kpi .delta.up { color: var(--green); }
.kpi .delta.down { color: var(--red); }

table { width: 100%; border-collapse: collapse; }
th, td {
  padding: 7px 8px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
th { color: var(--muted); font-weight: 500; }
tr:last-child td { border-bottom: 0; }
td.right, th.right { text-align: right; }

.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  background: #2a2f3a;
  color: var(--text);
  letter-spacing: 0.4px;
}
.tag.green { background: rgba(93, 211, 158, 0.15); color: var(--green); }
.tag.red { background: rgba(255, 107, 138, 0.15); color: var(--red); }
.tag.amber { background: rgba(255, 180, 84, 0.15); color: var(--amber); }
.tag.violet { background: rgba(181, 140, 255, 0.15); color: var(--violet); }
.tag.blue { background: rgba(95, 168, 255, 0.15); color: var(--accent); }

button, .btn {
  background: var(--accent);
  border: none;
  color: #0c0e13;
  padding: 7px 14px;
  border-radius: 5px;
  cursor: pointer;
  font: inherit;
  font-weight: 500;
}
button.ghost, .btn.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
button.danger, .btn.danger {
  background: var(--red);
  color: #0c0e13;
}
button.small, .btn.small { padding: 4px 9px; font-size: 12px; }
input, select, textarea {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 6px 9px;
  border-radius: 4px;
  font: inherit;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
}
textarea { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; min-height: 80px; }
label { font-size: 12px; color: var(--muted); display: block; margin-bottom: 4px; }

code, pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  background: var(--code);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 12px;
}
pre { padding: 10px; overflow-x: auto; white-space: pre-wrap; }

.status-card {
  display: flex; flex-direction: column; gap: 8px;
  padding: 16px; background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; min-width: 0;
}
.status-card .device-row {
  display: flex; align-items: center; gap: 10px;
  font-size: 22px; font-weight: 600;
}
.status-card .battery {
  height: 8px; background: var(--panel-2); border-radius: 4px; overflow: hidden;
}
.status-card .battery > div {
  height: 100%;
  background: linear-gradient(90deg, var(--green), var(--accent));
  transition: width 0.4s ease;
}
.status-card .battery.low > div { background: var(--amber); }
.status-card .battery.critical > div { background: var(--red); }
.status-card .meta {
  display: flex; gap: 8px; flex-wrap: wrap;
  font-size: 12px; color: var(--muted);
}

.spark { width: 100%; height: 60px; display: block; }
.spark path.line { fill: none; stroke: var(--accent); stroke-width: 1.5; }
.spark path.area { fill: rgba(95, 168, 255, 0.12); stroke: none; }
.spark .baseline { stroke: var(--border); stroke-dasharray: 2,3; }
.spark.cue path.line { stroke: var(--green); }
.spark.cue path.area { fill: rgba(93, 211, 158, 0.12); }
.spark.dot path.line { stroke: var(--violet); }
.spark.dot path.area { fill: rgba(181, 140, 255, 0.12); }

.feed {
  max-height: 360px; overflow-y: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
}
.feed .entry {
  padding: 4px 0; border-bottom: 1px solid var(--border); display: flex; gap: 8px;
}
.feed .entry:last-child { border-bottom: 0; }
.feed .entry .t { color: var(--muted); white-space: nowrap; }
.feed .entry .d { color: var(--accent); }
.feed .entry .e { color: var(--text); }
.feed .entry.command\.completed .e { color: var(--green); }
.feed .entry.command\.failed .e { color: var(--red); }
.feed .entry.command\.cancelled .e { color: var(--amber); }

.palette-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,0.5);
  display: none; align-items: flex-start; justify-content: center;
  padding-top: 14vh; z-index: 100; backdrop-filter: blur(6px);
}
.palette-backdrop.open { display: flex; }
.palette {
  width: min(640px, 92vw);
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.palette input.q {
  width: 100%; font-size: 16px; padding: 10px 12px;
  background: transparent; border: 0; border-bottom: 1px solid var(--border);
  border-radius: 0;
}
.palette input.q:focus { outline: none; border-bottom-color: var(--accent); }
.palette .results {
  max-height: 50vh; overflow-y: auto; margin-top: 6px;
}
.palette .results .item {
  padding: 8px 12px; display: flex; gap: 8px; align-items: center;
  border-radius: 6px; cursor: pointer;
}
.palette .results .item.active { background: var(--panel-2); }
.palette .results .item .name { font-weight: 500; }
.palette .results .item .desc { color: var(--muted); font-size: 12px; }
.palette-hint {
  display: flex; gap: 8px; justify-content: flex-end;
  padding: 6px 4px; color: var(--muted); font-size: 11px;
}

.ws-indicator {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11px; color: var(--muted);
  padding: 3px 8px; border-radius: 10px; background: var(--panel-2);
  border: 1px solid var(--border);
}
.ws-indicator .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--muted); }
.ws-indicator.live .dot { background: var(--green); animation: pulse 2s infinite; }
.ws-indicator.lost .dot { background: var(--red); }
.ws-indicator.connecting .dot { background: var(--amber); }

.flash-error {
  background: rgba(255, 107, 138, 0.12);
  border: 1px solid rgba(255, 107, 138, 0.4);
  color: var(--red);
  padding: 10px 12px; border-radius: 6px; margin-bottom: 14px;
  font-size: 13px;
}
.flash-ok {
  background: rgba(93, 211, 158, 0.12);
  border: 1px solid rgba(93, 211, 158, 0.4);
  color: var(--green);
  padding: 10px 12px; border-radius: 6px; margin-bottom: 14px;
  font-size: 13px;
}

.empty {
  color: var(--muted); font-style: italic; padding: 16px; text-align: center;
}

@media (max-width: 640px) {
  header.app { padding: 10px 14px; gap: 12px; }
  header.app nav a { font-size: 12px; padding: 3px 6px; }
  main { padding: 14px; }
  .status-card .device-row { font-size: 18px; }
  .kpi .value { font-size: 22px; }
  table th, table td { padding: 5px 6px; font-size: 12px; }
}