.admin-shell {
  position: relative;
  z-index: 1;
  min-height: 100vh;
}

.admin-header {
  position: sticky;
  top: 0;
  z-index: 50;
  width: 100%;
  border-bottom: 1px solid var(--border-default);
  background: var(--surface-control-raised);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow-hairline);
}

.admin-header-inner {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto minmax(180px, 1fr);
  align-items: center;
  gap: 16px;
  width: min(1280px, calc(100vw - 32px));
  min-height: 64px;
  margin: 0 auto;
  padding: 10px 0;
}

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

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
  border-radius: var(--radius-sm);
  background: var(--surface-inverse);
  color: var(--text-inverse);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-black);
  box-shadow: var(--shadow-soft);
}

.admin-brand-text {
  display: grid;
  min-width: 0;
  gap: 2px;
}

.admin-brand-title {
  color: var(--text-primary);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-strong);
  line-height: var(--line-height-tight);
}

.admin-brand-subtitle {
  min-width: 0;
  overflow: hidden;
  color: var(--text-muted);
  font-size: var(--font-size-xs);
  line-height: var(--line-height-snug);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.admin-header-actions {
  display: inline-flex;
  justify-content: flex-end;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.admin-header-mobile {
  display: none;
}

.admin-mobile-select-wrap {
  position: relative;
}

.admin-main {
  width: min(1180px, calc(100vw - 32px));
  min-width: 0;
  margin: 0 auto;
  padding: 28px 0 56px;
}

.admin-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.admin-topbar h1 {
  color: var(--text-primary);
  font-size: var(--font-size-page-title);
  font-weight: var(--font-weight-page-title);
  line-height: var(--line-height-tight);
}

.admin-topbar-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

@media (max-width: 1120px) {
  .admin-header-inner {
    grid-template-columns: minmax(190px, 1fr) auto;
    grid-template-areas:
      "brand actions"
      "mobile mobile";
    gap: 10px 16px;
    min-height: 0;
    padding: 12px 0;
  }

  .admin-brand {
    grid-area: brand;
  }

  .admin-header-actions {
    grid-area: actions;
  }

  .admin-header-nav {
    display: none;
  }

  .admin-header-mobile {
    grid-area: mobile;
    display: block;
  }
}

@media (max-width: 640px) {
  .admin-header-inner,
  .admin-main {
    width: min(100% - 24px, 1280px);
  }

  .admin-header-inner {
    grid-template-columns: 1fr;
    grid-template-areas:
      "brand"
      "mobile"
      "actions";
    align-items: stretch;
  }

  .admin-header-actions {
    justify-content: flex-start;
  }

  .admin-header-actions .zuco-button,
  .admin-topbar-actions .zuco-button {
    flex: 1 1 0;
  }

  .admin-topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .admin-topbar-actions {
    justify-content: flex-start;
    width: 100%;
  }

}