:root {
  --bg: #0D1117;
  --bg-grid: rgba(255,255,255,0.025);
  --panel: #151B24;
  --panel-alt: #1B222D;
  --border: #262F3B;
  --border-soft: #1E2630;
  --text: #E7EAEF;
  --text-muted: #7E8A9B;
  --text-dim: #576277;

  --cyan: #4FD1C5;
  --cyan-dim: rgba(79,209,197,0.14);
  --amber: #E8B23D;
  --amber-dim: rgba(232,178,61,0.14);
  --orange: #E8863D;
  --orange-dim: rgba(232,134,61,0.14);
  --red: #E4483A;
  --red-dim: rgba(228,72,58,0.16);

  --font-display: 'Rajdhani', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background:
    linear-gradient(var(--bg-grid) 1px, transparent 1px) 0 0 / 100% 28px,
    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px) 0 0 / 28px 100%,
    var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  min-height: 100vh;
}

::selection { background: var(--cyan-dim); color: var(--cyan); }

/* Radar scan line across the top */
.scan-line {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity: 0.55;
  animation: sweep 5s linear infinite;
  z-index: 50;
}
@keyframes sweep {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}
@media (prefers-reduced-motion: reduce) {
  .scan-line { animation: none; display: none; }
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding: 28px 32px 18px;
  border-bottom: 1px solid var(--border);
}
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--text-dim);
  margin-bottom: 6px;
}
.title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 28px;
  letter-spacing: 0.02em;
  margin: 0;
  color: var(--text);
}
.title-sub {
  display: block;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
  letter-spacing: 0;
}
.topbar-right {
  display: flex;
  align-items: center;
  gap: 18px;
}
.status-pill {
  display: flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  border: 1px solid var(--cyan-dim);
  background: var(--cyan-dim);
  padding: 5px 12px;
  border-radius: 3px;
}
.status-pill .dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
  0%,100% { opacity: 1; }
  50% { opacity: 0.35; }
}
.clock {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-muted);
}

.kpi-strip {
  display: flex;
  gap: 1px;
  background: var(--border);
  border-bottom: 1px solid var(--border);
}
.kpi {
  flex: 1;
  background: var(--panel);
  padding: 16px 22px;
}
.kpi-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.kpi-value {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 600;
  color: var(--text);
}
.kpi-critical .kpi-value { color: var(--red); }
.kpi-alert .kpi-value { color: var(--orange); }
.kpi-watch .kpi-value { color: var(--amber); }
.kpi-actions {
  background: var(--panel);
  display: flex;
  align-items: center;
  padding: 0 22px;
}

.btn {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  padding: 8px 14px;
  border-radius: 3px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
}
.btn:hover { border-color: var(--cyan); color: var(--cyan); }
.btn-ghost { background: var(--panel-alt); }
.btn-spike {
  font-size: 10px;
  padding: 5px 9px;
}
.btn-spike:hover { border-color: var(--orange); color: var(--orange); }

.layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 1px;
  background: var(--border);
}

.fleet-panel, .side-panel {
  background: var(--bg);
  padding: 22px 26px;
}

.panel-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-soft);
}
.panel-header h2 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  margin: 0;
  letter-spacing: 0.01em;
}
.panel-sub {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-dim);
}
.log-header { margin-top: 22px; }

.fleet-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 14px;
}

.asset-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--text-dim);
  border-radius: 4px;
  padding: 16px;
  cursor: pointer;
  transition: border-color 0.2s ease, transform 0.12s ease;
}
.asset-card:hover { transform: translateY(-1px); border-color: var(--cyan-dim); }
.asset-card.selected { border-color: var(--cyan); box-shadow: 0 0 0 1px var(--cyan-dim); }

.asset-card.level-CRITICAL { border-left-color: var(--red); }
.asset-card.level-ALERT { border-left-color: var(--orange); }
.asset-card.level-WATCH { border-left-color: var(--amber); }
.asset-card.level-MONITOR { border-left-color: var(--cyan); }

.asset-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
}
.asset-id {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-dim);
}
.asset-name {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.25;
  margin-top: 2px;
}

.gauge {
  width: 52px; height: 52px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.gauge::before {
  content: '';
  position: absolute;
  inset: 5px;
  border-radius: 50%;
  background: var(--panel);
}
.gauge-value {
  position: relative;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  z-index: 1;
}

.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  padding: 3px 8px;
  border-radius: 2px;
  margin-bottom: 10px;
}
.badge-CRITICAL { background: var(--red-dim); color: var(--red); }
.badge-ALERT { background: var(--orange-dim); color: var(--orange); }
.badge-WATCH { background: var(--amber-dim); color: var(--amber); }
.badge-MONITOR { background: var(--cyan-dim); color: var(--cyan); }

.telemetry-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 10px;
}
.telemetry-row span b {
  color: var(--text);
  font-weight: 500;
}

.action-text {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.4;
  margin-bottom: 10px;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.rul {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-dim);
}

.detail-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 16px;
  min-height: 160px;
  margin-bottom: 8px;
}
.detail-empty {
  color: var(--text-dim);
  font-size: 12.5px;
  font-family: var(--font-mono);
  padding: 20px 4px;
}
.detail-title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 4px;
}
.detail-id {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-dim);
  margin-bottom: 14px;
}
.detail-row {
  display: flex;
  justify-content: space-between;
  font-size: 12.5px;
  padding: 6px 0;
  border-bottom: 1px solid var(--border-soft);
}
.detail-row b { font-family: var(--font-mono); color: var(--text); }
.factors-title {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  margin: 14px 0 6px;
  text-transform: uppercase;
}
.factor-chip {
  display: inline-block;
  font-size: 11.5px;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  padding: 4px 9px;
  border-radius: 3px;
  margin: 0 6px 6px 0;
  color: var(--text-muted);
}

.log-feed {
  font-family: var(--font-mono);
  font-size: 11.5px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 260px;
  overflow-y: auto;
}
.log-entry {
  padding: 7px 10px;
  background: var(--panel);
  border-left: 2px solid var(--text-dim);
  border-radius: 2px;
  color: var(--text-muted);
  animation: fadein 0.3s ease;
}
.log-entry.lvl-CRITICAL { border-left-color: var(--red); }
.log-entry.lvl-ALERT { border-left-color: var(--orange); }
.log-entry.lvl-WATCH { border-left-color: var(--amber); }
@keyframes fadein { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: translateY(0); } }

.foot-note {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-dim);
  padding: 18px;
}

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .kpi-strip { flex-wrap: wrap; }
  .kpi { min-width: 45%; }
}

button:focus-visible, .asset-card:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}