/* ─── Bottom Navigation Bar ──────────────────────────────────────────────── */
#bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: #111111;
  border-top: 1px solid var(--kith-border);
  z-index: 100;
  display: flex;
  align-items: center;
  padding: 0 16px;
}

.nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  text-decoration: none;
  color: var(--kith-text-muted);
  cursor: pointer;
  transition: color 0.15s;
  padding: 6px 0;
}

.nav-item.active {
  color: var(--kith-green);
}

.nav-item:hover:not(.active) {
  color: var(--kith-text);
}

.nav-icon {
  font-size: 1.2rem;
  line-height: 1;
}

.nav-label {
  font-size: 0.65rem;
  letter-spacing: 0.04em;
}

/* ─── Nav mic button (4th slot) ──────────────────────────────────────────── */
.nav-mic-item {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 6px 0;
}

.nav-mic-circle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--kith-green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  box-shadow: 0 0 12px rgba(29, 185, 84, 0.4);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  line-height: 1;
}

.nav-mic-item:hover .nav-mic-circle {
  transform: scale(1.06);
  box-shadow: 0 0 18px rgba(29, 185, 84, 0.55);
}

.nav-mic-item.recording .nav-mic-circle {
  background: var(--kith-red);
  box-shadow: 0 0 18px rgba(224, 49, 49, 0.5);
  animation: mic-pulse 1.2s infinite;
}

@keyframes mic-pulse {
  0%, 100% { transform: scale(1); }
  50%       { transform: scale(1.08); }
}