Control-Center/frontend/src/app/pages/hub/hub-page.component.scss

// ============================================================================
// Hub Page — Responsive AgentCard Grid
// Desktop (≥1024px): 2×2 grid
// Mobile (<1024px): single-column stack
// ============================================================================

@use 'tokens' as tokens;

.hub-page {
  display: grid;
  grid-template-columns: 1fr;
  gap: tokens.$cc-card-gap;
  padding: tokens.$cc-section-padding;
  min-height: 400px;
  overflow-x: hidden;
}

// Desktop / kiosk breakpoint — 2-column grid
@media (min-width: tokens.$cc-breakpoint-desktop) {
  .hub-page {
    grid-template-columns: repeat(2, 1fr);
  }
}

// ── Loading state ──
.hub-page__loading {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 48px 24px;
  color: var(--cc-on-surface-variant);
}

.hub-page__loading-icon {
  font-size: 40px;
  width: 40px;
  height: 40px;
  color: var(--status-active);
  animation: spin 1.5s linear infinite;
}

.hub-page__loading-text {
  font-size: 16px;
  color: var(--cc-on-surface-variant);
  margin: 0;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

// ── Empty state ──
.hub-page__empty {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 48px 24px;
  text-align: center;
}

.hub-page__empty-icon {
  font-size: 48px;
  width: 48px;
  height: 48px;
  color: var(--status-offline);
}

.hub-page__empty-text {
  font-size: 18px;
  font-weight: 500;
  color: var(--cc-on-surface);
  margin: 0;
}

.hub-page__empty-hint {
  font-size: 14px;
  color: var(--cc-on-surface-variant);
  margin: 0;
}

// ── Error state ──
.hub-page__error {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 24px;
  border: 1px solid var(--status-error);
  border-radius: tokens.$cc-card-border-radius;
  background-color: var(--status-error-bg);
}

.hub-page__error-icon {
  font-size: 32px;
  width: 32px;
  height: 32px;
  color: var(--status-error);
}

.hub-page__error-text {
  font-size: 14px;
  color: var(--status-error);
  margin: 0;
  text-align: center;
}

// ── Accessibility: reduced motion ──
@media (prefers-reduced-motion: reduce) {
  .hub-page__loading-icon {
    animation: none;
  }
}