metabuilder/scss/components/feedback.scss

// Feedback components — alerts, skeletons, empty states, progress, banners
// Uses MD3 CSS custom properties from var(--mat-sys-*)

// ─── Alert ──────────────────────────────────────────────────────────────────

.alert {
  display: flex;
  gap: 12px;
  padding: 16px;
  border-radius: 8px;
  border: 1px solid;

  &--info {
    background: color-mix(in srgb, var(--mat-sys-primary) 8%, transparent);
    border-color: color-mix(in srgb, var(--mat-sys-primary) 30%, transparent);
    color: var(--mat-sys-on-surface);
  }

  &--warning {
    background: color-mix(in srgb, #f59e0b 8%, transparent);
    border-color: color-mix(in srgb, #f59e0b 30%, transparent);
    color: #92400e;
  }

  &--success {
    background: color-mix(in srgb, #16a34a 8%, transparent);
    border-color: color-mix(in srgb, #16a34a 30%, transparent);
    color: #14532d;
  }

  &--error {
    background: color-mix(in srgb, var(--mat-sys-error) 8%, transparent);
    border-color: color-mix(in srgb, var(--mat-sys-error) 30%, transparent);
    color: var(--mat-sys-error);
  }

  &__icon {
    flex-shrink: 0;
    margin-top: 2px;
  }

  &__content {
    flex: 1;
  }

  &__title {
    font-weight: 600;
    margin-bottom: 4px;
  }

  &__message {
    font-size: 14px;
  }
}

// ─── Skeleton ───────────────────────────────────────────────────────────────

@keyframes skeleton-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.skeleton {
  background: var(--mat-sys-surface-variant, color-mix(in srgb, var(--mat-sys-on-surface) 12%, transparent));
  animation: skeleton-pulse 1.5s ease-in-out infinite;

  &--text {
    border-radius: 4px;
    height: 16px;
  }

  &--rectangular {
    border-radius: 0;
  }

  &--rounded {
    border-radius: 8px;
  }

  &--avatar {
    border-radius: 50%;
  }
}

// ─── Loading fallback ────────────────────────────────────────────────────────

.loading-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  width: 100%;

  &__content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }

  &__message {
    font-size: 14px;
    color: var(--mat-sys-on-surface-variant);
  }
}

// ─── Empty state (feedback variant) ─────────────────────────────────────────

.empty-state-feedback {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px;
  height: 100%;
  text-align: center;
  gap: 0;

  &__icon {
    color: var(--mat-sys-on-surface-variant);
    margin-bottom: 16px;
  }

  &__actions {
    display: flex;
    flex-direction: row;
    gap: 12px;
    margin-top: 16px;
  }
}

// ─── Search empty state ──────────────────────────────────────────────────────

.search-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 24px 0;

  &__icon {
    color: var(--mat-sys-on-surface-variant);
  }

  &__message {
    font-size: 14px;
    color: var(--mat-sys-on-surface-variant);
  }
}

// ─── Offline banner ──────────────────────────────────────────────────────────

.offline-banner {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: color-mix(in srgb, var(--mat-sys-error) 8%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--mat-sys-error) 30%, transparent);
  color: var(--mat-sys-error);
  font-size: 14px;
  font-weight: 500;

  &__icon {
    flex-shrink: 0;
  }

  &__message {
    flex: 1;
  }
}

// ─── Circular progress ───────────────────────────────────────────────────────

.circular-progress {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;

  &__track {
    color: var(--mat-sys-on-surface-variant);
    opacity: 0.2;
  }

  &__fill {
    color: var(--mat-sys-primary);
    transition: stroke-dashoffset 300ms ease;
  }

  &__svg {
    transform: rotate(-90deg);
  }

  &__label {
    position: absolute;
    font-weight: 600;
    color: var(--mat-sys-on-surface);

    &--sm { font-size: 12px; }
    &--md { font-size: 14px; }
    &--lg { font-size: 16px; }
    &--xl { font-size: 18px; }
  }
}

// ─── Error panel empty state ─────────────────────────────────────────────────

.error-panel-empty-state {
  &__scanning-icon {
    animation: skeleton-pulse 1.5s ease-in-out infinite;
  }

  &__success-icon {
    color: #16a34a;
  }
}