*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:       #0d1117;
  --surface:  #161b22;
  --border:   #21262d;
  --muted:    #8b949e;
  --text:     #e6edf3;
  --blue:     #58a6ff;
  --green:    #3fb950;
  --yellow:   #d29922;
  --red:      #f85149;
  --ph-bg:    #0d1117;
}

body {
  font-family: 'Roboto', sans-serif;
  background: var(--bg);
  color: var(--text);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ── Header ──────────────────────────────────────────── */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  gap: 10px;
}

.header-left  { display: flex; align-items: center; gap: 12px; }
.header-right { display: flex; align-items: center; gap: 10px; }

.back-link {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.75rem;
  transition: color .2s;
}
.back-link:hover { color: var(--blue); }

.header-title {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--blue);
}

.track-name {
  font-size: 0.72rem;
  color: var(--muted);
}

.badge {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 10px;
}
.badge.demo       { background: #1f2937; color: var(--muted);  border: 1px solid #374151; }
.badge.connected  { background: #1a3a2a; color: var(--green);  border: 1px solid var(--green); }
.badge.live       { background: #1a3a2a; color: var(--green);  border: 1px solid var(--green); }

.live-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.72rem;
  font-family: 'Roboto', sans-serif;
  padding: 3px 10px;
  border-radius: 5px;
  cursor: pointer;
  transition: all .2s;
}
.live-btn:hover  { border-color: var(--blue); color: var(--blue); }
.live-btn.active { border-color: var(--red);  color: var(--red); }

/* ── Main layout: map left (28%), data right (72%) ─── */
main {
  display: grid;
  grid-template-columns: 28% 1fr;
  flex: 1;
  min-height: 0;
  gap: 0;
}

/* ── Map ─────────────────────────────────────────────── */
#map-panel {
  border-right: 1px solid var(--border);
  min-height: 0;
  display: flex;
  flex-direction: column;
}

#map { flex: 1; }

/* ── Data panel ──────────────────────────────────────── */
#data-panel {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 1fr;
  gap: 1px;
  background: var(--border);
  overflow-y: auto;
}

/* ── Cards ───────────────────────────────────────────── */
.card {
  background: var(--surface);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.clabel {
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 4px;
}

.cval {
  font-size: 2.2rem;
  font-weight: 700;
  font-family: 'Roboto Mono', monospace;
  line-height: 1;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.cval.sm { font-size: 1.6rem; }

.cunit {
  font-size: 0.67rem;
  color: var(--muted);
  margin-top: 3px;
}

.accent-blue   .cval { color: var(--blue); }
.accent-green  .cval { color: var(--green); }
.accent-yellow .cval { color: var(--yellow); }

/* ── Weather card ────────────────────────────────────── */
.weather-row { display: flex; align-items: baseline; flex-wrap: wrap; gap: 2px; margin: 3px 0; }

/* ── Placeholder cards ───────────────────────────────── */
.placeholder {
  background: var(--ph-bg);
  border: 1px dashed #30363d;
  opacity: 0.55;
}

.cval.ph { font-size: 1.8rem; color: var(--muted); }

.ph-label { color: #444d56; font-style: italic; }

/* ── Tire layout grid ────────────────────────────────── */
.tire-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  margin: 4px 0;
}
.tire {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.7rem;
  color: var(--muted);
  background: #1c2128;
  padding: 3px 6px;
  border-radius: 3px;
  text-align: center;
  line-height: 1.4;
}

/* ── Leaflet car dot ─────────────────────────────────── */
.car-dot {
  width: 11px;
  height: 11px;
  background: #f78166;
  border: 2px solid #fff;
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(247,129,102,0.9);
}

/* ── Responsive ──────────────────────────────────────── */
@media (max-width: 700px) {
  body { overflow: auto; height: auto; }
  main { grid-template-columns: 1fr; grid-template-rows: 50vw auto; }
  #map-panel { border-right: none; border-bottom: 1px solid var(--border); }
  #data-panel { grid-template-columns: repeat(2, 1fr); }
  .card[style*="span 2"] { grid-column: span 2; }
}