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sufi-blazor/docs/components/surfaces/SbSurface.md
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2026-05-18 15:53:59 +03:30

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# SbSurface
A low-level container component for creating elevated or outlined surfaces with customizable styling. Useful as a building block for custom components or when you need more control than SbCard provides.
## Parameters
| Parameter | Type | Default | Description |
|-----------|------|---------|-------------|
| Elevation | int | 1 | Shadow depth level (0-5) |
| Outlined | bool | false | Adds a border instead of relying solely on elevation |
| Background | string? | null | Custom background color (CSS value) |
| BorderRadius | string? | null | Custom border radius (CSS value) |
| Padding | string? | null | Custom padding (CSS value) |
| Class | string? | null | Additional CSS classes |
## Templates / Slots
| Slot | Type | Description |
|------|------|-------------|
| ChildContent | RenderFragment? | Content to render inside the surface |
## CSS Classes
- `sb-surface` - Base class
- `sb-surface--elevation-0` through `sb-surface--elevation-5` - Shadow levels
## Examples
### Basic Surface
```razor
<SbSurface>
<p>Content inside a surface</p>
</SbSurface>
```
### Elevation Levels
```razor
<SbSurface Elevation="0">Flat (no shadow)</SbSurface>
<SbSurface Elevation="1">Subtle shadow</SbSurface>
<SbSurface Elevation="2">Light shadow</SbSurface>
<SbSurface Elevation="3">Medium shadow</SbSurface>
<SbSurface Elevation="4">Strong shadow</SbSurface>
<SbSurface Elevation="5">Heavy shadow</SbSurface>
```
### Outlined Surface
```razor
<SbSurface Outlined="true" Elevation="0">
<p>This surface has a border.</p>
</SbSurface>
```
### Custom Background
```razor
<SbSurface Background="#f5f5f5" Padding="24px">
<p>Gray background surface</p>
</SbSurface>
<SbSurface Background="var(--sb-primary-light)" Padding="24px">
<p>Using CSS variable for background</p>
</SbSurface>
```
### Custom Border Radius
```razor
<SbSurface BorderRadius="16px" Padding="24px">
<p>Rounded corners</p>
</SbSurface>
<SbSurface BorderRadius="50%" Padding="48px">
<p>Circle</p>
</SbSurface>
```
### Custom Padding
```razor
<SbSurface Padding="8px">Compact padding</SbSurface>
<SbSurface Padding="16px">Default-like padding</SbSurface>
<SbSurface Padding="32px">Spacious padding</SbSurface>
<SbSurface Padding="16px 32px">Horizontal emphasis</SbSurface>
```
### Combined Styling
```razor
<SbSurface
Elevation="2"
Background="#ffffff"
BorderRadius="12px"
Padding="24px">
<SbHeading Level="4">Custom Surface</SbHeading>
<p>A fully customized surface component.</p>
</SbSurface>
```
### Building Custom Components
```razor
@* Custom tooltip-like element *@
<SbSurface
Elevation="3"
Background="#333"
BorderRadius="4px"
Padding="8px 12px"
Class="custom-tooltip">
<SbText Color="SbColor.Light">Tooltip content</SbText>
</SbSurface>
@* Custom floating action panel *@
<SbSurface
Elevation="4"
BorderRadius="24px"
Padding="16px"
Class="floating-panel">
<SbStack Direction="SbDirection.Row" Gap="SbSpacing.Sm">
<SbIconButton Icon="edit" />
<SbIconButton Icon="share" />
<SbIconButton Icon="delete" />
</SbStack>
</SbSurface>
```
### Nested Surfaces
```razor
<SbSurface Elevation="1" Padding="24px">
<SbHeading Level="4">Outer Surface</SbHeading>
<SbSurface Elevation="2" Padding="16px" Background="#f9f9f9">
<p>Nested inner surface with different elevation</p>
</SbSurface>
</SbSurface>
```
### Dashboard Widget
```razor
<SbSurface
Elevation="1"
BorderRadius="8px"
Padding="20px"
Class="dashboard-widget">
<div class="widget-header">
<SbText Variant="SbTextVariant.Caption">Monthly Sales</SbText>
<SbIconButton Icon="more-vertical" Size="SbSize.Sm" />
</div>
<SbHeading Level="2">$12,450</SbHeading>
<SbProgress Value="75" ShowLabel="true" />
</SbSurface>
```
### Comparison with SbCard
Use `SbSurface` when you need:
- More control over styling (background, radius, padding)
- A simpler container without header/footer structure
- Building blocks for custom components
Use `SbCard` when you need:
- Structured header/body/footer sections
- Clickable or linkable cards
- Standard card patterns