/* Breadcrumbs Component */

/* Component-specific custom properties */
.c-breadcrumbs {
  /* Base properties */
  --c-breadcrumbs-background: transparent;
  --c-breadcrumbs-padding: var(--ds-space-xs) 0;
  --c-breadcrumbs-gap: var(--ds-space-xs);
  --c-breadcrumbs-font-size: var(--ds-font-size-m);
  --c-breadcrumbs-line-height: var(--ds-line-height-m);
  
  /* List */
  --c-breadcrumbs-list-display: flex;
  --c-breadcrumbs-list-align: center;
  --c-breadcrumbs-list-wrap: wrap;
  --c-breadcrumbs-list-gap: var(--ds-space-xs);
  
  /* Item */
  --c-breadcrumbs-item-display: flex;
  --c-breadcrumbs-item-align: center;
  --c-breadcrumbs-item-gap: var(--ds-space-xs);
  
  /* Link */
  --c-breadcrumbs-link-color: var(--ds-color-text-weak);
  --c-breadcrumbs-link-color-hover: var(--ds-color-text);
  --c-breadcrumbs-link-color-focus: var(--ds-color-accent);
  --c-breadcrumbs-link-background-hover: var(--ds-color-button-hover);
  --c-breadcrumbs-link-padding: var(--ds-space-xs) var(--ds-space-s);
  --c-breadcrumbs-link-border-radius: var(--ds-radius-s);
  --c-breadcrumbs-link-text-decoration: none;
  --c-breadcrumbs-link-transition: all var(--ds-duration-fast) var(--ds-ease-out);
  
  /* Current page */
  --c-breadcrumbs-current-color: var(--ds-color-text);
  --c-breadcrumbs-current-font-weight: var(--ds-font-weight-medium);
  --c-breadcrumbs-current-padding: var(--ds-space-xs) var(--ds-space-s);
  
  /* Separator */
  --c-breadcrumbs-separator-color: var(--ds-color-text-weaker);
  --c-breadcrumbs-separator-font-size: var(--ds-font-size-s);
  --c-breadcrumbs-separator-margin: 0 var(--ds-space-xs);
  
  /* External icon */
  --c-breadcrumbs-external-icon-size: 0.75rem;
  --c-breadcrumbs-external-icon-margin: 0 0 0 var(--ds-space-xs);
  --c-breadcrumbs-external-icon-color: currentColor;
  
  /* Collapse */
  --c-breadcrumbs-collapse-button-background: var(--ds-color-surface-raised);
  --c-breadcrumbs-collapse-button-border: 1px solid var(--ds-color-border);
  --c-breadcrumbs-collapse-button-border-radius: var(--ds-radius-s);
  --c-breadcrumbs-collapse-button-padding: var(--ds-space-xs) var(--ds-space-s);
  --c-breadcrumbs-collapse-button-color: var(--ds-color-text-weak);
  --c-breadcrumbs-collapse-button-color-hover: var(--ds-color-text);
  
  /* Focus ring */
  --c-breadcrumbs-focus-ring: var(--ds-focus-ring);
}

/* Base breadcrumbs styles */
.c-breadcrumbs {
  background-color: var(--c-breadcrumbs-background);
  padding: var(--c-breadcrumbs-padding);
  font-size: var(--c-breadcrumbs-font-size);
  line-height: var(--c-breadcrumbs-line-height);
}

/* List */
.c-breadcrumbs__list {
  display: var(--c-breadcrumbs-list-display);
  align-items: var(--c-breadcrumbs-list-align);
  flex-wrap: var(--c-breadcrumbs-list-wrap);
  gap: var(--c-breadcrumbs-list-gap);
  margin: 0;
  padding: 0;
  list-style: none;
}

/* Item */
.c-breadcrumbs__item {
  display: var(--c-breadcrumbs-item-display);
  align-items: var(--c-breadcrumbs-item-align);
  gap: var(--c-breadcrumbs-item-gap);
  flex-shrink: 0;
}

/* Link */
.c-breadcrumbs__link {
  color: var(--c-breadcrumbs-link-color);
  text-decoration: var(--c-breadcrumbs-link-text-decoration);
  padding: var(--c-breadcrumbs-link-padding);
  border-radius: var(--c-breadcrumbs-link-border-radius);
  transition: var(--c-breadcrumbs-link-transition);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: var(--ds-space-xs);
}

.c-breadcrumbs__link:hover {
  color: var(--c-breadcrumbs-link-color-hover);
  background-color: var(--c-breadcrumbs-link-background-hover);
}

.c-breadcrumbs__link:focus {
  outline: none;
  box-shadow: var(--c-breadcrumbs-focus-ring);
  color: var(--c-breadcrumbs-link-color-focus);
}

/* External link styles */
.c-breadcrumbs__link--external {
  /* Additional styles for external links if needed */
}

/* Current page */
.c-breadcrumbs__current {
  color: var(--c-breadcrumbs-current-color);
  font-weight: var(--c-breadcrumbs-current-font-weight);
  padding: var(--c-breadcrumbs-current-padding);
  white-space: nowrap;
}

/* Separator */
.c-breadcrumbs__separator {
  color: var(--c-breadcrumbs-separator-color);
  font-size: var(--c-breadcrumbs-separator-font-size);
  margin: var(--c-breadcrumbs-separator-margin);
  user-select: none;
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

/* External icon */
.c-breadcrumbs__external-icon {
  width: var(--c-breadcrumbs-external-icon-size);
  height: var(--c-breadcrumbs-external-icon-size);
  margin: var(--c-breadcrumbs-external-icon-margin);
  color: var(--c-breadcrumbs-external-icon-color);
  flex-shrink: 0;
}

/* Collapse functionality */
.c-breadcrumbs--collapsible .c-breadcrumbs__item.c-breadcrumbs__item--hidden {
  display: none;
}

.c-breadcrumbs__collapse-button {
  background-color: var(--c-breadcrumbs-collapse-button-background);
  border: var(--c-breadcrumbs-collapse-button-border);
  border-radius: var(--c-breadcrumbs-collapse-button-border-radius);
  padding: var(--c-breadcrumbs-collapse-button-padding);
  color: var(--c-breadcrumbs-collapse-button-color);
  cursor: pointer;
  transition: var(--c-breadcrumbs-link-transition);
  font-size: inherit;
  line-height: inherit;
  white-space: nowrap;
}

.c-breadcrumbs__collapse-button:hover {
  color: var(--c-breadcrumbs-collapse-button-color-hover);
  background-color: var(--c-breadcrumbs-link-background-hover);
}

.c-breadcrumbs__collapse-button:focus {
  outline: none;
  box-shadow: var(--c-breadcrumbs-focus-ring);
}

/* Size variants */
.c-breadcrumbs--size-s {
  --c-breadcrumbs-font-size: var(--ds-font-size-s);
  --c-breadcrumbs-link-padding: calc(var(--ds-space-xs) / 2) var(--ds-space-xs);
  --c-breadcrumbs-current-padding: calc(var(--ds-space-xs) / 2) var(--ds-space-xs);
  --c-breadcrumbs-separator-font-size: calc(var(--ds-font-size-s) * 0.9);
  --c-breadcrumbs-external-icon-size: 0.625rem;
}

.c-breadcrumbs--size-l {
  --c-breadcrumbs-font-size: var(--ds-font-size-l);
  --c-breadcrumbs-link-padding: var(--ds-space-s) var(--ds-space-m);
  --c-breadcrumbs-current-padding: var(--ds-space-s) var(--ds-space-m);
  --c-breadcrumbs-separator-font-size: var(--ds-font-size-m);
  --c-breadcrumbs-external-icon-size: 1rem;
}

/* Responsive behavior */
@media (max-width: 768px) {
  .c-breadcrumbs {
    --c-breadcrumbs-font-size: var(--ds-font-size-s);
    --c-breadcrumbs-link-padding: var(--ds-space-xs);
    --c-breadcrumbs-current-padding: var(--ds-space-xs);
  }
  
  .c-breadcrumbs__list {
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--ds-color-border) transparent;
  }
  
  .c-breadcrumbs__list::-webkit-scrollbar {
    height: 4px;
  }
  
  .c-breadcrumbs__list::-webkit-scrollbar-track {
    background: transparent;
  }
  
  .c-breadcrumbs__list::-webkit-scrollbar-thumb {
    background-color: var(--ds-color-border);
    border-radius: var(--ds-radius-s);
  }
  
  /* Auto-collapse on mobile */
  .c-breadcrumbs:not(.c-breadcrumbs--no-auto-collapse) .c-breadcrumbs__item:not(:first-child):not(:last-child):not(:nth-last-child(2)) {
    display: none;
  }
  
  .c-breadcrumbs:not(.c-breadcrumbs--no-auto-collapse) .c-breadcrumbs__item:nth-child(2)::before {
    content: "...";
    color: var(--c-breadcrumbs-separator-color);
    margin-right: var(--ds-space-xs);
  }
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
  .c-breadcrumbs__link,
  .c-breadcrumbs__collapse-button {
    transition: none;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .c-breadcrumbs {
    --c-breadcrumbs-link-color: ButtonText;
    --c-breadcrumbs-link-color-hover: HighlightText;
    --c-breadcrumbs-link-background-hover: Highlight;
    --c-breadcrumbs-current-color: ButtonText;
    --c-breadcrumbs-separator-color: ButtonText;
  }
  
  .c-breadcrumbs__link:focus {
    outline: 2px solid ButtonText;
    outline-offset: 2px;
  }
}

/* Dark mode support (if implemented) */
@media (prefers-color-scheme: dark) {
  .c-breadcrumbs {
    --c-breadcrumbs-link-color: var(--ds-color-text-weak-dark, var(--ds-color-text-weak));
    --c-breadcrumbs-link-color-hover: var(--ds-color-text-dark, var(--ds-color-text));
    --c-breadcrumbs-current-color: var(--ds-color-text-dark, var(--ds-color-text));
    --c-breadcrumbs-separator-color: var(--ds-color-text-weaker-dark, var(--ds-color-text-weaker));
  }
}

/* Print styles */
@media print {
  .c-breadcrumbs {
    font-size: 10pt;
    margin-bottom: 12pt;
  }
  
  .c-breadcrumbs__link {
    color: #000 !important;
    text-decoration: underline !important;
    background: none !important;
  }
  
  .c-breadcrumbs__current {
    color: #000 !important;
    font-weight: bold !important;
  }
  
  .c-breadcrumbs__separator {
    color: #666 !important;
  }
  
  .c-breadcrumbs__external-icon {
    display: none;
  }
  
  .c-breadcrumbs__collapse-button {
    display: none;
  }
  
  /* Show all items when printing */
  .c-breadcrumbs__item.c-breadcrumbs__item--hidden {
    display: flex !important;
  }
}

/* RTL support */
[dir="rtl"] .c-breadcrumbs__external-icon {
  margin: var(--c-breadcrumbs-external-icon-margin);
  margin-left: 0;
  margin-right: var(--ds-space-xs);
}

[dir="rtl"] .c-breadcrumbs__separator svg {
  transform: scaleX(-1);
}

/* Focus management for keyboard navigation */
.c-breadcrumbs__link:focus-visible,
.c-breadcrumbs__collapse-button:focus-visible {
  box-shadow: var(--c-breadcrumbs-focus-ring);
}

/* Ensure proper spacing in flex layout */
.c-breadcrumbs__item:not(:last-child) .c-breadcrumbs__link,
.c-breadcrumbs__item:not(:last-child) .c-breadcrumbs__current {
  margin-right: 0;
}

/* Animation for collapse/expand */
.c-breadcrumbs__item {
  transition: opacity var(--ds-duration-fast) var(--ds-ease-out);
}

.c-breadcrumbs__item--hidden {
  opacity: 0;
  pointer-events: none;
}