/* ============================================================
   Header — sticky glass, brand tile, header pills
   ============================================================ */
.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--overlay-chrome);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-muted);
}

.header-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.brand-badge {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

/* Brand tile: bordered mono tile instead of a gradient ring */
.avatar-ring {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-muted);
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.avatar-text {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--accent-primary);
}

.brand-titles { min-width: 0; }

.brand-titles .brand-name {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--header-color);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand-titles .brand-sub {
  font-size: 0.76rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.brand-titles .brand-sub span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.02em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

/* Header pills: ghost by default; .primary = live status (soft accent fill) */
.action-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 38px;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-md);
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: color var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast),
    transform var(--transition-fast);
}

.action-pill:hover {
  color: var(--text-primary);
  border-color: var(--border-color);
  background: var(--surface-raised);
}

.action-pill:active { transform: translateY(1px); }

.action-pill.primary {
  color: var(--status-ok-text);
  background: var(--status-ok-bg);
  border-color: var(--border-muted);
}

.action-pill.primary:hover {
  color: var(--status-ok-text);
  border-color: var(--status-ok-border);
}

/* Live status dot (green is reserved for status) */
.action-pill.primary .icon::before {
  content: '';
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 2px;
  border-radius: 50%;
  background-color: var(--status-ok-border);
  box-shadow: 0 0 0 3px var(--status-ok-bg);
  animation: lc-pulse-dot 2s ease-in-out infinite;
  vertical-align: middle;
}

@keyframes lc-pulse-dot {
  0%, 100% { box-shadow: 0 0 0 3px var(--status-ok-bg); }
  50%      { box-shadow: 0 0 0 5px var(--accent-glow); }
}