:host { display: block; }
.hb-page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--hb-spacing-md) var(--hb-spacing-lg);
  background: var(--hb-color-bg-container);
  border-bottom: 1px solid var(--hb-color-border-secondary);
  border-radius: var(--hb-border-radius-sm);
}
.hb-page-header--ghost { background: transparent; border-bottom: none; }
.hb-page-header__main { display: flex; align-items: center; gap: var(--hb-spacing-sm); min-width: 0; }
.hb-page-header__back {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--hb-color-text);
  font-size: var(--hb-font-size-lg);
  line-height: 1;
  cursor: pointer;
  border-radius: var(--hb-border-radius-sm);
  transition: background 0.2s;
}
.hb-page-header__back:hover { background: var(--hb-color-fill-secondary); }
.hb-page-header__back-arrow { display: inline-block; }
.hb-page-header__titles { display: flex; align-items: baseline; gap: var(--hb-spacing-sm); min-width: 0; }
.hb-page-header__title {
  font-size: var(--hb-font-size-xl);
  font-weight: 600;
  color: var(--hb-color-text-primary);
  line-height: 1.4;
}
.hb-page-header__subtitle { font-size: var(--hb-font-size-sm); color: var(--hb-color-text-secondary); }
.hb-page-header__extra { display: flex; align-items: center; gap: var(--hb-spacing-sm); flex-shrink: 0; }
