/* ── conn-overlay.css — connection status banner ────────────────────────
   Thin top banner. Slides down when visible, up when hidden.
   Used for: WS reconnect, server booting, no internet (offline mode).
   z-index 99 — below splash (100), above cards (50) and app (1).
────────────────────────────────────────────────────────────────────────── */

#conn-overlay {
  position: fixed;
  top: 0; left: 0; right: 0;
  margin: 1rem 7.5rem 0rem 7.5rem;
  z-index: 99;
  transform: translateY(-150%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
  overflow: hidden;
  border: 1px solid var(--border-md);
  border-radius: var(--radius-lg);
}
#conn-overlay.visible {
  transform: translateY(0);
  pointer-events: all;
}

#conn-inner {
  background: var(--surface);
  padding: 0.5rem 1rem 0.5rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

#conn-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: lowercase;
  color: var(--muted);
}

/* ── Progress bar ────────────────────────────────────────────── */
#conn-bar-track {
  width: 100%;
  height: 3px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
  overflow: hidden;
}
@media (prefers-color-scheme: light) {
  #conn-bar-track { background: rgba(0, 0, 0, 0.08); }
}

#conn-bar {
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 3px;
  transition: width 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* Indeterminate — server boot / unknown-duration waits */
#conn-bar.indeterminate {
  width: 100% !important;
  transition: none;
  transform-origin: left;
  animation: conn-indeterminate 1.8s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}
@keyframes conn-indeterminate {
  0%   { transform: scaleX(0);   transform-origin: left; }
  40%  { transform: scaleX(0.5); transform-origin: left; }
  60%  { transform: scaleX(0.5); transform-origin: right; }
  100% { transform: scaleX(0);   transform-origin: right; }
}

/* ── Offline mode — no internet / server unreachable ─────────── */
#conn-overlay.offline #conn-label    { color: var(--warning); }
#conn-overlay.offline #conn-bar-track { display: none; }