:root {
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #334155;
  --strong: #0f172a;
  --live: #22c55e;
  --idle: #94a3b8;
  --skeleton: #e2e8f0;
  --skeleton-highlight: #f1f5f9;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --card: #1e293b;
    --text: #cbd5e1;
    --strong: #f8fafc;
    --idle: #64748b;
    --skeleton: #334155;
    --skeleton-highlight: #475569;
  }
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  box-sizing: border-box;
  min-height: 100vh;
  margin: 0;
  padding: 0 16px;
  background: var(--bg);
  font-family: system-ui, -apple-system, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
}

.badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 9999px;
  background: var(--card);
  box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  color: var(--text);
  font-size: 15px;
  white-space: nowrap;
}

/* Pulses green while connected to the broker. */
.dot {
  flex: none;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--idle);
  transition: background 0.3s;
}

.badge.live .dot {
  background: var(--live);
  animation: pulse 2s infinite;
}

.count {
  color: var(--strong);
  font-variant-numeric: tabular-nums;
}

/* Placeholder for the number until the first count arrives. */
.skeleton {
  display: inline-block;
  width: 3.2em;
  height: 1em;
  border-radius: 6px;
  vertical-align: -0.15em;
  background: linear-gradient(90deg, var(--skeleton) 0%, var(--skeleton-highlight) 50%, var(--skeleton) 100%);
  background-size: 200% 100%;
  animation: shimmer 1.2s infinite linear;
}

.label {
  transition: opacity 0.25s;
}

.label.is-changing {
  opacity: 0;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.9); }
}

@keyframes shimmer {
  from { background-position: 200% 0; }
  to { background-position: -200% 0; }
}

@media (prefers-reduced-motion: reduce) {
  .badge.live .dot,
  .skeleton {
    animation: none;
  }

  .label {
    transition: none;
  }
}