.header {
  height: var(--header-height);
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
}

.header-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.3px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.header-btn {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.header-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.header-divider {
  width: 1px;
  height: 20px;
  background: var(--border-color);
  margin: 0 8px;
}

.header-user {
  display: flex;
  align-items: center;
  gap: 8px;
}

.user-name {
  font-size: 12px;
  color: var(--text-secondary);
}

.user-avatar {
  position: relative;
}

.avatar-circle {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
  color: white;
}

.status-dot {
  position: absolute;
  bottom: -1px;
  right: -1px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--bg-secondary);
}

.status-dot.online {
  background: var(--status-success);
}
