diff --git a/examples/button.tsx b/examples/button.tsx
index a72479e..f664fa9 100644
--- a/examples/button.tsx
+++ b/examples/button.tsx
@@ -23,12 +23,12 @@ const Button = define('Button', {
 
   states: {
     ":not(:disabled):hover": {
-      transform: 'translateY(-2px) !important',
+      transform: 'translateY(-2px)',
       filter: 'brightness(1.05)'
     },
     ":not(:disabled):active": {
-      transform: 'translateY(1px) !important',
-      boxShadow: '0 2px 3px rgba(0, 0, 0, 0.2) !important'
+      transform: 'translateY(1px)',
+      boxShadow: '0 2px 3px rgba(0, 0, 0, 0.2)'
     },
   },
 
diff --git a/examples/form.tsx b/examples/form.tsx
new file mode 100644
index 0000000..e5c0370
--- /dev/null
+++ b/examples/form.tsx
@@ -0,0 +1,199 @@
+import { define } from '../src'
+import { ExampleSection } from './ssr/helpers'
+
+const Input = define('Input', {
+  base: 'input',
+
+  padding: '12px 16px',
+  fontSize: 16,
+  border: '2px solid #e5e7eb',
+  borderRadius: 8,
+  background: 'white',
+  color: '#111827',
+  transition: 'all 0.2s ease',
+  width: '100%',
+  boxSizing: 'border-box',
+
+  states: {
+    ':focus': {
+      outline: 'none',
+      borderColor: '#3b82f6',
+      boxShadow: '0 0 0 3px rgba(59, 130, 246, 0.1)'
+    },
+    ':disabled': {
+      background: '#f3f4f6',
+      color: '#9ca3af',
+      cursor: 'not-allowed'
+    }
+  },
+
+  variants: {
+    status: {
+      error: {
+        borderColor: '#ef4444',
+        states: {
+          ':focus': {
+            borderColor: '#ef4444',
+            boxShadow: '0 0 0 3px rgba(239, 68, 68, 0.1)'
+          }
+        }
+      },
+      success: {
+        borderColor: '#10b981',
+        states: {
+          ':focus': {
+            borderColor: '#10b981',
+            boxShadow: '0 0 0 3px rgba(16, 185, 129, 0.1)'
+          }
+        }
+      }
+    }
+  }
+})
+
+const Textarea = define('Textarea', {
+  base: 'textarea',
+
+  padding: '12px 16px',
+  fontSize: 16,
+  border: '2px solid #e5e7eb',
+  borderRadius: 8,
+  background: 'white',
+  color: '#111827',
+  transition: 'all 0.2s ease',
+  width: '100%',
+  minHeight: 120,
+  boxSizing: 'border-box',
+  fontFamily: 'inherit',
+  resize: 'vertical',
+
+  states: {
+    ':focus': {
+      outline: 'none',
+      borderColor: '#3b82f6',
+      boxShadow: '0 0 0 3px rgba(59, 130, 246, 0.1)'
+    }
+  }
+})
+
+const FormGroup = define('FormGroup', {
+  marginBottom: 24,
+
+  parts: {
+    Label: {
+      base: 'label',
+      display: 'block',
+      fontSize: 14,
+      fontWeight: 600,
+      color: '#374151',
+      marginBottom: 8
+    },
+    Helper: {
+      fontSize: 13,
+      color: '#6b7280',
+      marginTop: 6
+    },
+    Error: {
+      fontSize: 13,
+      color: '#ef4444',
+      marginTop: 6
+    }
+  },
+
+  render({ props, parts: { Root, Label, Helper, Error } }) {
+    return (
+      <Root>
+        {props.label && <Label>{props.label}</Label>}
+        {props.children}
+        {props.helper && <Helper>{props.helper}</Helper>}
+        {props.error && <Error>{props.error}</Error>}
+      </Root>
+    )
+  }
+})
+
+const Checkbox = define('Checkbox', {
+  parts: {
+    Input: {
+      base: 'input[type=checkbox]',
+      width: 20,
+      height: 20,
+      cursor: 'pointer'
+    },
+    Label: {
+      base: 'label',
+      display: 'flex',
+      alignItems: 'center',
+      gap: 12,
+      cursor: 'pointer',
+      fontSize: 16,
+      color: '#374151',
+
+      states: {
+        ':hover': {
+          color: '#111827'
+        }
+      },
+
+      selectors: {
+        '@Input:disabled + &': {
+          cursor: 'not-allowed',
+          color: '#9ca3af'
+        }
+      }
+    }
+  },
+
+  render({ props, parts: { Root, Input, Label } }) {
+    return (
+      <Root>
+        <Label>
+          <Input id={props.id} checked={props.checked} disabled={props.disabled} />
+          {props.label}
+        </Label>
+      </Root>
+    )
+  }
+})
+
+export const FormExamplesContent = () => (
+  <>
+    <ExampleSection title="Text Inputs">
+      <FormGroup label="Email" helper="We'll never share your email">
+        <Input type="email" placeholder="you@example.com" />
+      </FormGroup>
+
+      <FormGroup label="Password">
+        <Input type="password" placeholder="Enter your password" />
+      </FormGroup>
+
+      <FormGroup label="Disabled Input">
+        <Input value="This field is disabled" disabled />
+      </FormGroup>
+    </ExampleSection>
+
+    <ExampleSection title="Validation States">
+      <FormGroup label="Valid Email" helper="Looks good!">
+        <Input status="success" type="email" value="user@example.com" />
+      </FormGroup>
+
+      <FormGroup label="Invalid Email" error="Please enter a valid email address">
+        <Input status="error" type="email" value="not-an-email" />
+      </FormGroup>
+    </ExampleSection>
+
+    <ExampleSection title="Textarea">
+      <FormGroup label="Bio" helper="Tell us about yourself">
+        <Textarea placeholder="Write something interesting..." />
+      </FormGroup>
+    </ExampleSection>
+
+    <ExampleSection title="Checkboxes">
+      <FormGroup>
+        <Checkbox id="cb1" label="I agree to the terms and conditions" checked />
+        <Checkbox id="cb2" label="Subscribe to newsletter" />
+        <Checkbox id="cb3" label="This option is disabled" disabled />
+      </FormGroup>
+    </ExampleSection>
+  </>
+)
diff --git a/examples/spa/app.tsx b/examples/spa/app.tsx
index f4a659a..de80426 100644
--- a/examples/spa/app.tsx
+++ b/examples/spa/app.tsx
@@ -2,6 +2,7 @@ import { define } from '../../src'
 import { ButtonExamplesContent } from '../button'
 import { ProfileExamplesContent } from '../profile'
 import { NavigationExamplesContent } from '../navigation'
+import { FormExamplesContent } from '../form'
 
 export const Main = define('SpaMain', {
   base: 'div',
@@ -146,6 +147,11 @@ const HomePage = () => (
         title="Navigation"
         desc="Navigation patterns including tabs, pills, vertical nav, and breadcrumbs"
       />
+
+      <ExampleCard href="/spa/form"
+        title="Forms"
+        desc="Form inputs with validation states, checkboxes, textareas, and buttons"
+      />
     </ExamplesGrid>
   </>
 )
@@ -153,6 +159,7 @@ const HomePage = () => (
 const ProfilePage = () => <ProfileExamplesContent />
 const ButtonsPage = () => <ButtonExamplesContent />
 const NavigationPage = () => <NavigationExamplesContent />
+const FormPage = () => <FormExamplesContent />
 
 export function route(path: string) {
   switch (path) {
@@ -165,6 +172,8 @@ export function route(path: string) {
       return <ButtonsPage />
     case '/spa/navigation':
       return <NavigationPage />
+    case '/spa/form':
+      return <FormPage />
     default:
       return <P>404 Not Found</P>
   }
@@ -182,6 +191,7 @@ export function App() {
           <Link href="/spa/profile" aria-current={path === '/spa/profile' ? 'page' : undefined}>Profile</Link>
           <Link href="/spa/buttons" aria-current={path === '/spa/buttons' ? 'page' : undefined}>Buttons</Link>
           <Link href="/spa/navigation" aria-current={path === '/spa/navigation' ? 'page' : undefined}>Navigation</Link>
+          <Link href="/spa/form" aria-current={path === '/spa/form' ? 'page' : undefined}>Forms</Link>
         </Nav>
         <div id="content">
           {route(path)}
diff --git a/examples/ssr/helpers.tsx b/examples/ssr/helpers.tsx
index 808736a..b7d8cf6 100644
--- a/examples/ssr/helpers.tsx
+++ b/examples/ssr/helpers.tsx
@@ -97,6 +97,7 @@ export const Layout = define({
               <NavLink href="/ssr/profile" aria-current={path === '/ssr/profile' ? 'page' : undefined}>Profile</NavLink>
               <NavLink href="/ssr/buttons" aria-current={path === '/ssr/buttons' ? 'page' : undefined}>Buttons</NavLink>
               <NavLink href="/ssr/navigation" aria-current={path === '/ssr/navigation' ? 'page' : undefined}>Navigation</NavLink>
+              <NavLink href="/ssr/form" aria-current={path === '/ssr/form' ? 'page' : undefined}>Forms</NavLink>
             </Nav>
             <Header>{props.title}</Header>
             {props.children}
diff --git a/examples/ssr/pages.tsx b/examples/ssr/pages.tsx
index 2483ee0..bf3b175 100644
--- a/examples/ssr/pages.tsx
+++ b/examples/ssr/pages.tsx
@@ -3,6 +3,7 @@ import { Layout } from './helpers'
 import { ButtonExamplesContent } from '../button'
 import { ProfileExamplesContent } from '../profile'
 import { NavigationExamplesContent } from '../navigation'
+import { FormExamplesContent } from '../form'
 
 const P = define('SSR_P', {
   color: '#6b7280',
@@ -76,6 +77,11 @@ export const IndexPage = ({ path }: any) => (
         title="Navigation"
         desc="Navigation patterns including tabs, pills, vertical nav, and breadcrumbs"
       />
+
+      <ExampleCard href="/ssr/form"
+        title="Forms"
+        desc="Form inputs with validation states, checkboxes, textareas, and buttons"
+      />
     </ExamplesGrid>
   </Layout>
 )
@@ -97,3 +103,9 @@ export const NavigationExamplesPage = ({ path }: any) => (
     <NavigationExamplesContent />
   </Layout>
 )
+
+export const FormExamplesPage = ({ path }: any) => (
+  <Layout title="Forge Form Examples" path={path}>
+    <FormExamplesContent />
+  </Layout>
+)
diff --git a/server.tsx b/server.tsx
index 1d9f6a2..d6b29fc 100644
--- a/server.tsx
+++ b/server.tsx
@@ -1,5 +1,5 @@
 import { Hono } from 'hono'
-import { IndexPage, ProfileExamplesPage, ButtonExamplesPage, NavigationExamplesPage } from './examples/ssr/pages'
+import { IndexPage, ProfileExamplesPage, ButtonExamplesPage, NavigationExamplesPage, FormExamplesPage } from './examples/ssr/pages'
 import { LandingPage } from './examples/ssr/landing'
 import { styles, stylesToCSS } from './src'
 
@@ -15,6 +15,8 @@ app.get('/ssr/buttons', c => c.html(<ButtonExamplesPage path="/ssr/buttons" />))
 
 app.get('/ssr/navigation', c => c.html(<NavigationExamplesPage path="/ssr/navigation" />))
 
+app.get('/ssr/form', c => c.html(<FormExamplesPage path="/ssr/form" />))
+
 app.get('/styles', c => c.text(stylesToCSS(styles)))
 
 app.get('/spa/*', async c => c.html(await Bun.file('./examples/spa/index.html').text()))
diff --git a/src/types.ts b/src/types.ts
index a68dc9a..6f8b817 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -6,69 +6,136 @@ export type TagDef = {
   parts?: Record<string, TagDef>
   variants?: Record<string, TagDef | Record<string, TagDef>>
   render?: (obj: any) => any
-
-  // layout-related
   alignContent?: 'normal' | 'flex-start' | 'flex-end' | 'center' | 'space-between' | 'space-around' | 'space-evenly' | 'stretch' | 'start' | 'end' | 'baseline'
   alignItems?: 'normal' | 'flex-start' | 'flex-end' | 'center' | 'stretch' | 'baseline' | 'start' | 'end' | 'self-start' | 'self-end'
   alignSelf?: 'auto' | 'normal' | 'flex-start' | 'flex-end' | 'center' | 'stretch' | 'baseline' | 'start' | 'end' | 'self-start' | 'self-end'
   aspectRatio?: number | string
+
   bottom?: number | string
+  left?: number | string
+  right?: number | string
+  top?: number | string
+  inset?: number | string
+
+  // logical positioning / sizing
+  insetBlock?: number | string
+  insetInline?: number | string
+  insetBlockStart?: number | string
+  insetBlockEnd?: number | string
+  insetInlineStart?: number | string
+  insetInlineEnd?: number | string
+
   boxSizing?: 'content-box' | 'border-box'
+
   columnGap?: number | string
+  rowGap?: number | string
+  gap?: number | string
+
   contain?: 'none' | 'strict' | 'content' | 'size' | 'layout' | 'style' | 'paint'
+
   display?: 'block' | 'inline' | 'inline-block' | 'flex' | 'inline-flex' | 'grid' | 'inline-grid' | 'flow-root' | 'none' | 'contents' | 'table' | 'table-row' | 'table-cell'
+
+  // float layout
+  float?: 'left' | 'right' | 'inline-start' | 'inline-end' | 'none'
+  clear?: 'left' | 'right' | 'both' | 'inline-start' | 'inline-end' | 'none'
+
   flex?: number | string
   flexBasis?: number | string
   flexDirection?: 'row' | 'row-reverse' | 'column' | 'column-reverse'
   flexGrow?: number
   flexShrink?: number
   flexWrap?: 'nowrap' | 'wrap' | 'wrap-reverse'
-  gap?: number | string
+  flexFlow?: string
+
   gridAutoFlow?: 'row' | 'column' | 'dense' | 'row dense' | 'column dense'
+  gridAutoColumns?: string
+  gridAutoRows?: string
   gridColumn?: string
-  gridGap?: number | string
+  gridColumnStart?: string | number
+  gridColumnEnd?: string | number
   gridRow?: string
+  gridRowStart?: string | number
+  gridRowEnd?: string | number
+  gridArea?: string
+  gridGap?: number | string
   gridTemplateColumns?: string
   gridTemplateRows?: string
+  gridTemplateAreas?: string
+
   height?: number | string
-  inset?: number | string
-  justifyContent?: 'normal' | 'flex-start' | 'flex-end' | 'center' | 'space-between' | 'space-around' | 'space-evenly' | 'start' | 'end' | 'left' | 'right' | 'stretch'
-  justifyItems?: 'normal' | 'flex-start' | 'flex-end' | 'center' | 'stretch' | 'baseline' | 'start' | 'end' | 'self-start' | 'self-end' | 'left' | 'right'
-  justifySelf?: 'auto' | 'normal' | 'flex-start' | 'flex-end' | 'center' | 'stretch' | 'baseline' | 'start' | 'end' | 'self-start' | 'self-end' | 'left' | 'right'
-  left?: number | string
+  width?: number | string
+  maxHeight?: number | string
+  maxWidth?: number | string
+  minHeight?: number | string
+  minWidth?: number | string
+
+  // logical sizes
+  blockSize?: number | string
+  inlineSize?: number | string
+  minBlockSize?: number | string
+  maxBlockSize?: number | string
+  minInlineSize?: number | string
+  maxInlineSize?: number | string
+
   margin?: number | string
   marginBottom?: number | string
   marginLeft?: number | string
   marginRight?: number | string
   marginTop?: number | string
-  maxHeight?: number | string
-  maxWidth?: number | string
-  minHeight?: number | string
-  minWidth?: number | string
-  order?: number
-  overflow?: 'visible' | 'hidden' | 'scroll' | 'auto' | 'clip'
-  overflowX?: 'visible' | 'hidden' | 'scroll' | 'auto' | 'clip'
-  overflowY?: 'visible' | 'hidden' | 'scroll' | 'auto' | 'clip'
+
   padding?: number | string
   paddingBottom?: number | string
   paddingLeft?: number | string
   paddingRight?: number | string
   paddingTop?: number | string
+
+  order?: number
+
+  overflow?: 'visible' | 'hidden' | 'scroll' | 'auto' | 'clip'
+  overflowX?: 'visible' | 'hidden' | 'scroll' | 'auto' | 'clip'
+  overflowY?: 'visible' | 'hidden' | 'scroll' | 'auto' | 'clip'
+  overflowWrap?: 'normal' | 'break-word' | 'anywhere'
+
+  // overscroll / snap / scrolling ergonomics
+  overscrollBehavior?: 'auto' | 'contain' | 'none'
+  overscrollBehaviorX?: 'auto' | 'contain' | 'none'
+  overscrollBehaviorY?: 'auto' | 'contain' | 'none'
+  scrollBehavior?: 'auto' | 'smooth'
+  scrollSnapType?: 'none' | 'x' | 'y' | 'block' | 'inline' | 'both' | string
+  scrollSnapAlign?: 'none' | 'start' | 'end' | 'center'
+  scrollSnapStop?: 'normal' | 'always'
+  scrollMargin?: number | string
+  scrollMarginTop?: number | string
+  scrollMarginRight?: number | string
+  scrollMarginBottom?: number | string
+  scrollMarginLeft?: number | string
+  scrollPadding?: number | string
+  scrollPaddingTop?: number | string
+  scrollPaddingRight?: number | string
+  scrollPaddingBottom?: number | string
+  scrollPaddingLeft?: number | string
+  scrollbarWidth?: 'auto' | 'thin' | 'none'
+  scrollbarColor?: string
+
   placeContent?: string
   placeItems?: string
   placeSelf?: string
+
   position?: 'static' | 'relative' | 'absolute' | 'fixed' | 'sticky'
-  right?: number | string
-  rowGap?: number | string
-  top?: number | string
+
+  justifyContent?: 'normal' | 'flex-start' | 'flex-end' | 'center' | 'space-between' | 'space-around' | 'space-evenly' | 'start' | 'end' | 'left' | 'right' | 'stretch'
+  justifyItems?: 'normal' | 'flex-start' | 'flex-end' | 'center' | 'stretch' | 'baseline' | 'start' | 'end' | 'self-start' | 'self-end' | 'left' | 'right'
+  justifySelf?: 'auto' | 'normal' | 'flex-start' | 'flex-end' | 'center' | 'stretch' | 'baseline' | 'start' | 'end' | 'self-start' | 'self-end' | 'left' | 'right'
+
   verticalAlign?: 'baseline' | 'top' | 'middle' | 'bottom' | 'text-top' | 'text-bottom' | 'sub' | 'super'
-  width?: number | string
+
   zIndex?: number
 
   // visual/theme-related
   animation?: string
   appearance?: 'none' | 'auto' | 'button' | 'textfield' | 'searchfield' | 'textarea' | 'checkbox' | 'radio'
   backdropFilter?: string
+
   background?: string
   backgroundAttachment?: 'scroll' | 'fixed' | 'local'
   backgroundClip?: 'border-box' | 'padding-box' | 'content-box' | 'text'
@@ -77,6 +144,7 @@ export type TagDef = {
   backgroundPosition?: string
   backgroundRepeat?: 'repeat' | 'repeat-x' | 'repeat-y' | 'no-repeat' | 'space' | 'round'
   backgroundSize?: 'auto' | 'cover' | 'contain'
+
   border?: string
   borderBottom?: string
   borderBottomColor?: string
@@ -102,54 +170,110 @@ export type TagDef = {
   borderTopStyle?: 'none' | 'solid' | 'dashed' | 'dotted' | 'double' | 'groove' | 'ridge' | 'inset' | 'outset' | 'hidden'
   borderTopWidth?: number | string
   borderWidth?: number | string
+
+  // table-ish
+  borderCollapse?: 'collapse' | 'separate'
+  borderSpacing?: number | string
+  captionSide?: 'top' | 'bottom'
+  emptyCells?: 'show' | 'hide'
+  tableLayout?: 'auto' | 'fixed'
+
   boxShadow?: string
   clipPath?: string
+
   color?: string
   content?: string
   cursor?: 'auto' | 'default' | 'none' | 'context-menu' | 'help' | 'pointer' | 'progress' | 'wait' | 'cell' | 'crosshair' | 'text' | 'vertical-text' | 'alias' | 'copy' | 'move' | 'no-drop' | 'not-allowed' | 'grab' | 'grabbing' | 'e-resize' | 'n-resize' | 'ne-resize' | 'nw-resize' | 's-resize' | 'se-resize' | 'sw-resize' | 'w-resize' | 'ew-resize' | 'ns-resize' | 'nesw-resize' | 'nwse-resize' | 'col-resize' | 'row-resize' | 'all-scroll' | 'zoom-in' | 'zoom-out'
+
   filter?: string
+
+  font?: string
   fontFamily?: string
   fontSize?: number | string
   fontStyle?: 'normal' | 'italic' | 'oblique'
   fontWeight?: 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900 | 'normal' | 'bold' | 'bolder' | 'lighter' | number
+  fontStretch?: string
+  fontVariant?: string
+  fontKerning?: 'auto' | 'normal' | 'none'
+
   isolation?: 'auto' | 'isolate'
   letterSpacing?: number | string
   lineHeight?: number | string
+
   listStyle?: string
   listStyleImage?: string
   listStylePosition?: 'inside' | 'outside'
   listStyleType?: 'none' | 'disc' | 'circle' | 'square' | 'decimal' | 'decimal-leading-zero' | 'lower-roman' | 'upper-roman' | 'lower-alpha' | 'upper-alpha' | 'lower-greek' | 'lower-latin' | 'upper-latin'
+
   mixBlendMode?: 'normal' | 'multiply' | 'screen' | 'overlay' | 'darken' | 'lighten' | 'color-dodge' | 'color-burn' | 'hard-light' | 'soft-light' | 'difference' | 'exclusion' | 'hue' | 'saturation' | 'color' | 'luminosity'
+
   objectFit?: 'fill' | 'contain' | 'cover' | 'none' | 'scale-down'
+
   opacity?: number
+
   outline?: string
   outlineColor?: string
   outlineOffset?: number | string
   outlineStyle?: 'none' | 'solid' | 'dashed' | 'dotted' | 'double' | 'groove' | 'ridge' | 'inset' | 'outset'
   outlineWidth?: number | string
+
+  // form / selection / interaction
+  caretColor?: string
+  accentColor?: string
   pointerEvents?: 'auto' | 'none' | 'visiblePainted' | 'visibleFill' | 'visibleStroke' | 'visible' | 'painted' | 'fill' | 'stroke' | 'all'
   resize?: 'none' | 'both' | 'horizontal' | 'vertical' | 'block' | 'inline'
-  scrollBehavior?: 'auto' | 'smooth'
+  touchAction?: 'auto' | 'none' | 'pan-x' | 'pan-y' | 'manipulation' | string
+  userSelect?: 'auto' | 'none' | 'text' | 'contain' | 'all'
+
+  // writing / bidi / hyphenation
+  direction?: 'ltr' | 'rtl'
+  writingMode?: 'horizontal-tb' | 'vertical-rl' | 'vertical-lr' | string
+  unicodeBidi?: 'normal' | 'embed' | 'bidi-override' | 'isolate' | 'isolate-override' | 'plaintext'
+  hyphens?: 'none' | 'manual' | 'auto'
+  tabSize?: number | string
+
   textAlign?: 'left' | 'right' | 'center' | 'justify' | 'start' | 'end'
   textDecoration?: string
   textDecorationColor?: string
   textDecorationLine?: 'none' | 'underline' | 'overline' | 'line-through' | 'blink'
   textDecorationStyle?: 'solid' | 'double' | 'dotted' | 'dashed' | 'wavy'
   textDecorationThickness?: number | string
+  textUnderlineOffset?: number | string
   textIndent?: number | string
   textOverflow?: 'clip' | 'ellipsis' | string
   textShadow?: string
   textTransform?: 'none' | 'capitalize' | 'uppercase' | 'lowercase' | 'full-width' | 'full-size-kana'
-  transform?: string
-  transition?: string
-  userSelect?: 'auto' | 'none' | 'text' | 'contain' | 'all'
-  visibility?: 'visible' | 'hidden' | 'collapse'
   whiteSpace?: 'normal' | 'nowrap' | 'pre' | 'pre-wrap' | 'pre-line' | 'break-spaces'
-  willChange?: 'auto' | 'scroll-position' | 'contents'
   wordBreak?: 'normal' | 'break-all' | 'keep-all' | 'break-word'
   wordSpacing?: number | string
   wordWrap?: 'normal' | 'break-word' | 'anywhere'
-  overflowWrap?: 'normal' | 'break-word' | 'anywhere'
+
+  transform?: string
+  transformOrigin?: string
+  transformStyle?: 'flat' | 'preserve-3d'
+  perspective?: number | string
+  perspectiveOrigin?: string
+  backfaceVisibility?: 'visible' | 'hidden'
+
+  transition?: string
+  visibility?: 'visible' | 'hidden' | 'collapse'
+  willChange?: 'auto' | 'scroll-position' | 'contents'
+
+  // masks (if you want modern visual effects)
+  mask?: string
+  maskImage?: string
+  maskSize?: string
+  maskPosition?: string
+  maskRepeat?: string
+
+  // svg styling (if you want these supported)
+  fill?: string
+  stroke?: string
+  strokeWidth?: number | string
+  strokeLinecap?: 'butt' | 'round' | 'square'
+  strokeLinejoin?: 'miter' | 'round' | 'bevel'
+  strokeDasharray?: number | string
+  strokeDashoffset?: number | string
 }
 
 export const NonStyleKeys = new Set([