.app-header {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--app-spacing-md);
  padding: var(--app-spacing-sm) var(--app-spacing-md);
  padding-top: calc(var(--app-spacing-sm) + env(safe-area-inset-top, 0));
  background: var(--app-color-primary);
  color: var(--app-color-text-inverse);
  min-height: calc(var(--app-touch-target) + env(safe-area-inset-top, 0));
  box-shadow: var(--app-shadow-sm);
}

.app-header__left {
  display: flex;
  align-items: center;
  gap: var(--app-spacing-sm);
  min-width: 0;
}

.app-header__back {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--app-touch-target);
  height: var(--app-touch-target);
  margin-left: calc(-1 * var(--app-spacing-sm));
  border-radius: var(--app-radius-full);
  color: inherit;
  flex: 0 0 auto;
}

.app-header__back:active {
  background: rgba(255, 255, 255, 0.15);
}

.app-header__back svg {
  width: 20px;
  height: 20px;
}

.app-header__title {
  font-size: var(--app-font-size-lg);
  font-weight: 700;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: 0.3px;
}

.app-header__pseudo {
  display: inline-flex;
  align-items: center;
  gap: var(--app-spacing-sm);
  padding: var(--app-spacing-xs) var(--app-spacing-sm);
  border-radius: var(--app-radius-full);
  background: rgba(255, 255, 255, 0.18);
  color: inherit;
  min-height: 36px;
  max-width: 50%;
  overflow: hidden;
  flex: 0 0 auto;
}

.app-header__pseudo:active {
  background: rgba(255, 255, 255, 0.28);
}

.app-header__pseudo-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--app-radius-full);
  background: var(--app-color-text-inverse);
  color: var(--app-color-primary);
  font-size: var(--app-font-size-xs);
  font-weight: 700;
  flex: 0 0 auto;
}

.app-header__pseudo-label {
  font-size: var(--app-font-size-sm);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

@media (max-width: 360px) {
  .app-header__pseudo-label { display: none; }
  .app-header__pseudo { padding: var(--app-spacing-xs); }
}