/* App Shell, Header, and Breadcrumb Styles */
/* Supplementary styles for shell components */

/* CSS Custom Properties for shell */
:root {
  --header-height: 48px;
  --breadcrumb-height: 32px;
  --shell-bg: var(--bg-primary, #ffffff);
  --header-bg: var(--bg-secondary, #f5f5f5);
  --border-color: #e0e0e0;
  --text-secondary: #666666;
  --text-tertiary: #999999;
  --accent-hover: #0052a3;
  --bg-hover: rgba(0, 0, 0, 0.05);
}

/* Dark mode support (future) */
@media (prefers-color-scheme: dark) {
  :root {
    --shell-bg: #1a1a1a;
    --header-bg: #2a2a2a;
    --border-color: #404040;
    --text-secondary: #999999;
    --text-tertiary: #666666;
    --bg-hover: rgba(255, 255, 255, 0.05);
  }
}

/* Global transitions for route changes */
app-shell main > * {
  transition: opacity 0.15s ease;
}

app-shell main > *.active {
  opacity: 1;
}

/* Focus styles for navigation */
app-header .nav-link:focus,
app-breadcrumb .breadcrumb-link:focus {
  outline: 2px solid var(--accent-color, #0066cc);
  outline-offset: 2px;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent-color, #0066cc);
  color: white;
  padding: 8px 16px;
  z-index: 100;
  text-decoration: none;
}

.skip-link:focus {
  top: 0;
}

/* Print styles */
@media print {
  app-header,
  app-breadcrumb {
    display: none !important;
  }

  app-shell main {
    display: block !important;
  }

  app-shell main > * {
    display: none !important;
  }

  app-shell main > *.active {
    display: block !important;
  }
}

/* Responsive adjustments */
@media (max-width: 480px) {
  :root {
    --header-height: 44px;
    --breadcrumb-height: 28px;
  }
}