/* ── HEADER (region A — top bar) ────────────────────────────────────── */
/* Slim, ~52px, near-invisible: wordmark left; live clock, connection dot,
   theme toggle right. redesign.md §2. */

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  height: 52px;
  padding: 0 24px;
  border-bottom: 1px solid var(--hairline);
  position: sticky;
  top: 0;
  background: var(--header-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 10;
}

.logo {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  line-height: 1.15;
}

.meta {
  margin-left: auto;
}

@media (max-width: 640px) {
  header { padding: 0 16px; }
}

.logo {
  opacity: 0.92;
}

.logo-word {
  font-family: 'Bitter', Georgia, serif;
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}

.logo-tagline {
  font-family: 'Inter', 'Nunito Sans', sans-serif;
  font-size: 9px;
  font-weight: 300;
  letter-spacing: 0.03em;
  color: var(--text-faint);
  padding-top: 4px;
  text-align: center;
}

.meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-clock {
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

@media (max-width: 480px) {
  .header-clock { display: none; }
}

/* Connection dot: green = fresh, amber = stale >10min, red = disconnected.
   Color communicates state; the title attribute carries it in text too. */
.conn-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ok);
  flex-shrink: 0;
  transition: background-color 0.3s, box-shadow 0.3s;
}
.conn-dot.is-fresh   { background: var(--ok); }
.conn-dot.is-stale   { background: var(--warn); }
.conn-dot.is-offline { background: var(--crit); }
.conn-dot.is-fetching { box-shadow: 0 0 0 3px var(--accent-soft); }