Add comprehensive component library expansion with new UI components
This commit includes multiple new components and improvements to the UI essentials library: ## New Components Added: - **Accordion**: Expandable/collapsible content panels with full accessibility - **Alert**: Notification and messaging component with variants and dismiss functionality - **Popover**: Floating content containers with positioning and trigger options - **Timeline**: Chronological event display with customizable styling - **Tree View**: Hierarchical data display with expand/collapse functionality - **Toast**: Notification component (previously committed, includes style refinements) ## Component Features: - Full TypeScript implementation with Angular 19+ patterns - Comprehensive SCSS styling using semantic design tokens exclusively - Multiple size variants (sm, md, lg) and color variants (primary, success, warning, danger, info) - Accessibility support with ARIA attributes and keyboard navigation - Responsive design with mobile-first approach - Interactive demos showcasing all component features - Integration with existing design system and routing ## Demo Applications: - Created comprehensive demo components for each new component - Interactive examples with live code demonstrations - Integrated into main demo application routing and navigation ## Documentation: - Added COMPONENT_CREATION_TEMPLATE.md with detailed guidelines - Comprehensive component creation patterns and best practices - Design token usage guidelines and validation rules ## Code Quality: - Follows established Angular and SCSS conventions - Uses only verified semantic design tokens - Maintains consistency with existing component architecture - Comprehensive error handling and edge case management 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
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@use '../../../../../shared-ui/src/styles/semantic/index' as *;
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.demo-container {
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max-width: 1200px;
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margin: 0 auto;
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padding: $semantic-spacing-layout-section-md;
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}
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.demo-section {
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margin-bottom: $semantic-spacing-layout-section-lg;
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h2, h3, h4 {
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margin: 0 0 $semantic-spacing-component-lg 0;
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color: $semantic-color-text-primary;
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}
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h2 {
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font-family: map-get($semantic-typography-heading-h2, font-family);
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font-size: map-get($semantic-typography-heading-h2, font-size);
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font-weight: map-get($semantic-typography-heading-h2, font-weight);
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line-height: map-get($semantic-typography-heading-h2, line-height);
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border-bottom: $semantic-border-width-1 solid $semantic-color-border-subtle;
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padding-bottom: $semantic-spacing-component-md;
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}
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h3 {
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font-family: map-get($semantic-typography-heading-h3, font-family);
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font-size: map-get($semantic-typography-heading-h3, font-size);
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font-weight: map-get($semantic-typography-heading-h3, font-weight);
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line-height: map-get($semantic-typography-heading-h3, line-height);
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color: $semantic-color-text-secondary;
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margin-bottom: $semantic-spacing-component-md;
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}
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h4 {
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font-family: map-get($semantic-typography-heading-h4, font-family);
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font-size: map-get($semantic-typography-heading-h4, font-size);
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font-weight: map-get($semantic-typography-heading-h4, font-weight);
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line-height: map-get($semantic-typography-heading-h4, line-height);
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margin-bottom: $semantic-spacing-component-sm;
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}
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}
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.demo-column {
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display: flex;
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flex-direction: column;
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gap: $semantic-spacing-component-md;
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max-width: 800px;
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}
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.demo-grid {
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display: grid;
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grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
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gap: $semantic-spacing-layout-section-md;
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}
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.demo-variant-group {
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display: flex;
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flex-direction: column;
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gap: $semantic-spacing-component-sm;
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}
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.demo-message {
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padding: $semantic-spacing-component-md;
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background: $semantic-color-surface-secondary;
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border: $semantic-border-width-1 solid $semantic-color-border-subtle;
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border-radius: $semantic-border-card-radius;
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font-family: map-get($semantic-typography-body-medium, font-family);
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font-size: map-get($semantic-typography-body-medium, font-size);
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font-weight: map-get($semantic-typography-body-medium, font-weight);
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line-height: map-get($semantic-typography-body-medium, line-height);
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color: $semantic-color-text-secondary;
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margin: 0;
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}
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.demo-button {
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background: $semantic-color-primary;
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color: $semantic-color-on-primary;
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border: none;
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border-radius: $semantic-border-button-radius;
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padding: $semantic-spacing-interactive-button-padding-y $semantic-spacing-interactive-button-padding-x;
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font-family: map-get($semantic-typography-button-medium, font-family);
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font-size: map-get($semantic-typography-button-medium, font-size);
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font-weight: map-get($semantic-typography-button-medium, font-weight);
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line-height: map-get($semantic-typography-button-medium, line-height);
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cursor: pointer;
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transition: all $semantic-motion-duration-fast $semantic-motion-easing-ease;
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&:hover {
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box-shadow: $semantic-shadow-button-hover;
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}
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&:focus-visible {
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outline: 2px solid $semantic-color-focus;
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outline-offset: 2px;
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}
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&:active {
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box-shadow: $semantic-shadow-button-rest;
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}
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}
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.demo-info {
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background: $semantic-color-surface-elevated;
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border: $semantic-border-width-1 solid $semantic-color-border-subtle;
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border-radius: $semantic-border-card-radius;
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padding: $semantic-spacing-component-lg;
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ul {
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margin: 0;
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padding-left: $semantic-spacing-component-md;
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li {
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font-family: map-get($semantic-typography-body-medium, font-family);
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font-size: map-get($semantic-typography-body-medium, font-size);
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font-weight: map-get($semantic-typography-body-medium, font-weight);
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line-height: map-get($semantic-typography-body-medium, line-height);
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color: $semantic-color-text-secondary;
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margin-bottom: $semantic-spacing-component-xs;
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strong {
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color: $semantic-color-text-primary;
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font-weight: $semantic-typography-font-weight-semibold;
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}
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}
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}
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}
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// Responsive adjustments
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@media (max-width: $semantic-breakpoint-md - 1) {
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.demo-container {
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padding: $semantic-spacing-layout-section-sm;
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}
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.demo-grid {
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grid-template-columns: 1fr;
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gap: $semantic-spacing-layout-section-sm;
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}
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.demo-column {
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gap: $semantic-spacing-component-sm;
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}
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}
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@media (max-width: $semantic-breakpoint-sm - 1) {
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.demo-container {
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padding: $semantic-spacing-component-md;
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}
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.demo-section {
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margin-bottom: $semantic-spacing-layout-section-md;
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h2 {
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font-family: map-get($semantic-typography-heading-h3, font-family);
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font-size: map-get($semantic-typography-heading-h3, font-size);
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font-weight: map-get($semantic-typography-heading-h3, font-weight);
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line-height: map-get($semantic-typography-heading-h3, line-height);
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}
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h3 {
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font-family: map-get($semantic-typography-heading-h4, font-family);
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font-size: map-get($semantic-typography-heading-h4, font-size);
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font-weight: map-get($semantic-typography-heading-h4, font-weight);
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line-height: map-get($semantic-typography-heading-h4, line-height);
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}
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}
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}
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