ui-essentials/projects/demo-ui-essentials/src/app/demos/center-demo/center-demo.component.scss

@use 'ui-design-system/src/styles/semantic/index' as *;

.demo-container {
  padding: $semantic-spacing-layout-section-md;
}

.demo-section {
  margin-bottom: $semantic-spacing-layout-section-lg;
  
  h3 {
    font-family: map-get($semantic-typography-heading-h3, font-family);
    font-size: map-get($semantic-typography-heading-h3, font-size);
    font-weight: map-get($semantic-typography-heading-h3, font-weight);
    line-height: map-get($semantic-typography-heading-h3, line-height);
    color: $semantic-color-text-primary;
    margin-bottom: $semantic-spacing-content-heading;
  }
}

.demo-row {
  display: flex;
  gap: $semantic-spacing-grid-gap-md;
  flex-wrap: wrap;
}

.demo-column {
  display: flex;
  flex-direction: column;
  gap: $semantic-spacing-stack-md;
}

.demo-example {
  flex: 1;
  min-width: 250px;
  
  h4 {
    font-family: map-get($semantic-typography-heading-h4, font-family);
    font-size: map-get($semantic-typography-heading-h4, font-size);
    font-weight: map-get($semantic-typography-heading-h4, font-weight);
    line-height: map-get($semantic-typography-heading-h4, line-height);
    color: $semantic-color-text-primary;
    margin-bottom: $semantic-spacing-component-sm;
  }
}

.demo-boundary {
  border: 2px dashed $semantic-color-border-secondary;
  background-color: rgba(128, 128, 128, 0.1);
  min-height: 100px;
  width: 100%;
}

.demo-content {
  background: $semantic-color-surface-elevated;
  padding: $semantic-spacing-component-md;
  border-radius: $semantic-border-radius-md;
  border: 1px solid $semantic-color-border-primary;
  box-shadow: $semantic-shadow-elevation-1;
  color: $semantic-color-text-primary;
  text-align: center;
  
  font-family: map-get($semantic-typography-body-medium, font-family);
  font-size: map-get($semantic-typography-body-medium, font-size);
  font-weight: map-get($semantic-typography-body-medium, font-weight);
  line-height: map-get($semantic-typography-body-medium, line-height);
}

.demo-content-small {
  background: $semantic-color-primary;
  color: $semantic-color-on-primary;
  padding: $semantic-spacing-component-xs;
  border-radius: $semantic-border-radius-sm;
  font-size: $semantic-typography-font-size-sm;
  font-weight: $semantic-typography-font-weight-medium;
}

.demo-inline {
  margin: 0 $semantic-spacing-component-xs;
}

.demo-card {
  background: $semantic-color-surface-primary;
  padding: $semantic-spacing-component-xl;
  border-radius: $semantic-border-radius-lg;
  box-shadow: $semantic-shadow-elevation-2;
  border: 1px solid $semantic-color-border-subtle;
  text-align: center;
  max-width: 400px;
  
  h3 {
    font-family: map-get($semantic-typography-heading-h3, font-family);
    font-size: map-get($semantic-typography-heading-h3, font-size);
    font-weight: map-get($semantic-typography-heading-h3, font-weight);
    line-height: map-get($semantic-typography-heading-h3, line-height);
    color: $semantic-color-text-primary;
    margin-bottom: $semantic-spacing-content-paragraph;
  }
  
  p {
    font-family: map-get($semantic-typography-body-medium, font-family);
    font-size: map-get($semantic-typography-body-medium, font-size);
    font-weight: map-get($semantic-typography-body-medium, font-weight);
    line-height: map-get($semantic-typography-body-medium, line-height);
    color: $semantic-color-text-secondary;
    margin-bottom: $semantic-spacing-component-lg;
  }
}

.demo-loading {
  text-align: center;
  
  .demo-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid $semantic-color-border-subtle;
    border-top: 4px solid $semantic-color-primary;
    border-radius: $semantic-border-radius-full;
    animation: spin 1s linear infinite;
    margin: 0 auto $semantic-spacing-component-md auto;
  }
  
  p {
    font-family: map-get($semantic-typography-body-medium, font-family);
    font-size: map-get($semantic-typography-body-medium, font-size);
    font-weight: map-get($semantic-typography-body-medium, font-weight);
    line-height: map-get($semantic-typography-body-medium, line-height);
    color: $semantic-color-text-secondary;
  }
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.demo-hero {
  text-align: center;
  
  h2 {
    font-family: map-get($semantic-typography-heading-h2, font-family);
    font-size: map-get($semantic-typography-heading-h2, font-size);
    font-weight: map-get($semantic-typography-heading-h2, font-weight);
    line-height: map-get($semantic-typography-heading-h2, line-height);
    color: $semantic-color-text-primary;
    margin-bottom: $semantic-spacing-content-heading;
  }
  
  p {
    font-family: map-get($semantic-typography-body-large, font-family);
    font-size: map-get($semantic-typography-body-large, font-size);
    font-weight: map-get($semantic-typography-body-large, font-weight);
    line-height: map-get($semantic-typography-body-large, line-height);
    color: $semantic-color-text-secondary;
    margin-bottom: $semantic-spacing-component-xl;
  }
}

.demo-button {
  background: $semantic-color-surface-secondary;
  color: $semantic-color-text-primary;
  border: 1px solid $semantic-color-border-primary;
  padding: $semantic-spacing-interactive-button-padding-y $semantic-spacing-interactive-button-padding-x;
  border-radius: $semantic-border-button-radius;
  
  font-family: map-get($semantic-typography-button-medium, font-family);
  font-size: map-get($semantic-typography-button-medium, font-size);
  font-weight: map-get($semantic-typography-button-medium, font-weight);
  line-height: map-get($semantic-typography-button-medium, line-height);
  
  cursor: pointer;
  transition: all $semantic-motion-duration-fast $semantic-motion-easing-ease;
  
  &:hover {
    background: $semantic-color-surface-elevated;
    box-shadow: $semantic-shadow-button-hover;
  }
  
  &--primary {
    background: $semantic-color-primary;
    color: $semantic-color-on-primary;
    border-color: $semantic-color-primary;
    
    &:hover {
      opacity: $semantic-opacity-hover;
    }
  }
}

@media (max-width: 768px) {
  .demo-row {
    flex-direction: column;
  }
  
  .demo-example {
    min-width: auto;
  }
}