diff --git a/apps/sim/app/chat/[subdomain]/chat-client.tsx b/apps/sim/app/chat/[subdomain]/chat-client.tsx
index b28182c4dd6..1f5c087fcc0 100644
--- a/apps/sim/app/chat/[subdomain]/chat-client.tsx
+++ b/apps/sim/app/chat/[subdomain]/chat-client.tsx
@@ -570,8 +570,8 @@ export default function ChatClient({ subdomain }: { subdomain: string }) {
       />
 
       {/* Input area (free-standing at the bottom) */}
-      <div className='relative p-4 pb-6'>
-        <div className='relative mx-auto max-w-3xl'>
+      <div className='relative p-3 pb-4 md:p-4 md:pb-6'>
+        <div className='relative mx-auto max-w-3xl md:max-w-[748px]'>
           <ChatInput
             onSubmit={(value, isVoiceInput) => {
               void handleSendMessage(value, isVoiceInput)
diff --git a/apps/sim/app/chat/[subdomain]/components/header/header.tsx b/apps/sim/app/chat/[subdomain]/components/header/header.tsx
index 1680f50f0aa..d620104ebf9 100644
--- a/apps/sim/app/chat/[subdomain]/components/header/header.tsx
+++ b/apps/sim/app/chat/[subdomain]/components/header/header.tsx
@@ -1,6 +1,5 @@
 'use client'
 
-import { motion } from 'framer-motion'
 import { GithubIcon } from '@/components/icons'
 
 interface ChatHeaderProps {
@@ -19,7 +18,7 @@ export function ChatHeader({ chatConfig, starCount }: ChatHeaderProps) {
   const primaryColor = chatConfig?.customizations?.primaryColor || '#701FFC'
 
   return (
-    <div className='flex items-center justify-between border-border border-b bg-background/95 px-6 py-3 backdrop-blur supports-[backdrop-filter]:bg-background/60'>
+    <div className='flex items-center justify-between bg-background/95 px-5 py-3 pt-4 backdrop-blur supports-[backdrop-filter]:bg-background/60 md:px-6 md:pt-3'>
       <div className='flex items-center gap-3'>
         {chatConfig?.customizations?.logoUrl && (
           <img
@@ -32,21 +31,17 @@ export function ChatHeader({ chatConfig, starCount }: ChatHeaderProps) {
           {chatConfig?.customizations?.headerText || chatConfig?.title || 'Chat'}
         </h2>
       </div>
-      <div className='flex items-center gap-1'>
-        <motion.a
+      <div className='flex items-center gap-2'>
+        <a
           href='https://github.com/simstudioai/sim'
-          className='flex items-center gap-1 rounded-md px-1.5 py-1 text-foreground/70 transition-colors duration-200 hover:bg-foreground/5 hover:text-foreground'
+          className='flex items-center gap-1 text-foreground'
           aria-label='GitHub'
           target='_blank'
           rel='noopener noreferrer'
-          initial={{ opacity: 0, y: -5 }}
-          animate={{ opacity: 1, y: 0 }}
-          transition={{ duration: 0.3, ease: 'easeOut' }}
-          whileHover={{ scale: 1.02 }}
         >
           <GithubIcon className='h-[18px] w-[18px]' />
           <span className='hidden font-medium text-xs sm:inline-block'>{starCount}</span>
-        </motion.a>
+        </a>
         <a
           href='https://simstudio.ai'
           target='_blank'
diff --git a/apps/sim/app/chat/[subdomain]/components/input/input.tsx b/apps/sim/app/chat/[subdomain]/components/input/input.tsx
index c513965e079..83a1feb4ec0 100644
--- a/apps/sim/app/chat/[subdomain]/components/input/input.tsx
+++ b/apps/sim/app/chat/[subdomain]/components/input/input.tsx
@@ -9,18 +9,8 @@ import { VoiceInput } from './voice-input'
 
 const PLACEHOLDER_MOBILE = 'Enter a message'
 const PLACEHOLDER_DESKTOP = 'Enter a message or click the mic to speak'
-const MAX_TEXTAREA_HEIGHT = 160 // Max height in pixels (e.g., for about 4-5 lines)
-
-const containerVariants = {
-  collapsed: {
-    height: '56px', // Fixed height when collapsed
-    boxShadow: '0 1px 6px 0 rgba(0,0,0,0.05)',
-  },
-  expanded: {
-    height: 'auto',
-    boxShadow: '0 2px 10px 0 rgba(0,0,0,0.1)',
-  },
-} as const
+const MAX_TEXTAREA_HEIGHT = 120 // Max height in pixels (e.g., for about 3-4 lines)
+const MAX_TEXTAREA_HEIGHT_MOBILE = 100 // Smaller for mobile
 
 export const ChatInput: React.FC<{
   onSubmit?: (value: string, isVoiceInput?: boolean) => void
@@ -45,8 +35,12 @@ export const ChatInput: React.FC<{
       el.style.height = 'auto' // Reset height to correctly calculate scrollHeight
       const scrollHeight = el.scrollHeight
 
-      if (scrollHeight > MAX_TEXTAREA_HEIGHT) {
-        el.style.height = `${MAX_TEXTAREA_HEIGHT}px`
+      // Use mobile height on mobile devices, desktop height on desktop
+      const isMobile = window.innerWidth < 768
+      const maxHeight = isMobile ? MAX_TEXTAREA_HEIGHT_MOBILE : MAX_TEXTAREA_HEIGHT
+
+      if (scrollHeight > maxHeight) {
+        el.style.height = `${maxHeight}px`
         el.style.overflowY = 'auto'
       } else {
         el.style.height = `${scrollHeight}px`
@@ -136,32 +130,28 @@ export const ChatInput: React.FC<{
 
   return (
     <>
-      <div className='fixed right-0 bottom-0 left-0 flex w-full items-center justify-center bg-gradient-to-t from-white to-transparent pb-4 text-black'>
-        <motion.div
-          ref={wrapperRef}
-          className='w-full max-w-3xl px-4'
-          variants={containerVariants}
-          animate={'expanded'}
-          initial='collapsed'
-          style={{
-            overflow: 'hidden',
-            borderRadius: 32,
-            background: '#fff',
-            border: '1px solid rgba(0,0,0,0.1)',
-            marginLeft: 'auto',
-            marginRight: 'auto',
-          }}
-          onClick={handleActivate}
-        >
-          <div className='flex h-full w-full items-center rounded-full p-2'>
-            {/* Voice Input with Tooltip */}
-            {isSttAvailable && (
-              <div className='mr-2'>
+      <div className='fixed right-0 bottom-0 left-0 flex w-full items-center justify-center bg-gradient-to-t from-white to-transparent px-4 pb-4 text-black md:px-0 md:pb-4'>
+        <div ref={wrapperRef} className='w-full max-w-3xl md:max-w-[748px]'>
+          {/* Text Input Area with Controls */}
+          <motion.div
+            className='rounded-2xl border border-gray-200 bg-white shadow-sm md:rounded-3xl'
+            onClick={handleActivate}
+            initial={{ opacity: 0, y: 10 }}
+            animate={{ opacity: 1, y: 0 }}
+            transition={{ duration: 0.2 }}
+          >
+            <div className='flex items-center gap-2 p-3 md:p-4'>
+              {/* Voice Input */}
+              {isSttAvailable && (
                 <TooltipProvider>
                   <Tooltip>
                     <TooltipTrigger asChild>
                       <div>
-                        <VoiceInput onVoiceStart={handleVoiceStart} disabled={isStreaming} />
+                        <VoiceInput
+                          onVoiceStart={handleVoiceStart}
+                          disabled={isStreaming}
+                          minimal
+                        />
                       </div>
                     </TooltipTrigger>
                     <TooltipContent side='top'>
@@ -170,97 +160,87 @@ export const ChatInput: React.FC<{
                     </TooltipContent>
                   </Tooltip>
                 </TooltipProvider>
+              )}
+
+              {/* Text Input Container */}
+              <div className='relative flex-1'>
+                <textarea
+                  ref={textareaRef}
+                  value={inputValue}
+                  onChange={handleInputChange}
+                  className='flex w-full resize-none items-center overflow-hidden bg-transparent text-sm outline-none placeholder:text-gray-400 md:font-[330] md:text-base'
+                  placeholder={isActive ? '' : ''}
+                  rows={1}
+                  style={{
+                    minHeight: window.innerWidth >= 768 ? '24px' : '28px',
+                    lineHeight: '1.4',
+                    paddingTop: window.innerWidth >= 768 ? '4px' : '3px',
+                    paddingBottom: window.innerWidth >= 768 ? '4px' : '3px',
+                  }}
+                  onKeyDown={(e) => {
+                    if (e.key === 'Enter' && !e.shiftKey) {
+                      e.preventDefault()
+                      handleSubmit()
+                    }
+                  }}
+                />
+
+                {/* Placeholder */}
+                <div className='pointer-events-none absolute top-0 left-0 flex h-full w-full items-center'>
+                  {!isActive && !inputValue && (
+                    <>
+                      {/* Mobile placeholder */}
+                      <div
+                        className='-translate-y-1/2 absolute top-1/2 left-0 transform select-none text-gray-400 text-sm md:hidden md:text-base'
+                        style={{ paddingTop: '3px', paddingBottom: '3px' }}
+                      >
+                        {PLACEHOLDER_MOBILE}
+                      </div>
+                      {/* Desktop placeholder */}
+                      <div
+                        className='-translate-y-1/2 absolute top-1/2 left-0 hidden transform select-none font-[330] text-gray-400 text-sm md:block md:text-base'
+                        style={{ paddingTop: '4px', paddingBottom: '4px' }}
+                      >
+                        {PLACEHOLDER_DESKTOP}
+                      </div>
+                    </>
+                  )}
+                </div>
               </div>
-            )}
 
-            {/* Text Input & Placeholder */}
-            <div className='relative min-h-[40px] flex-1'>
-              <textarea
-                ref={textareaRef}
-                value={inputValue}
-                onChange={handleInputChange}
-                className='w-full resize-none overflow-hidden bg-transparent px-3 py-3 text-base outline-none placeholder:text-gray-400'
-                placeholder={isActive ? '' : ''}
-                rows={1}
-                style={{
-                  minHeight: '40px',
-                  lineHeight: '1.4',
-                }}
-                onKeyDown={(e) => {
-                  if (e.key === 'Enter' && !e.shiftKey) {
-                    e.preventDefault()
+              {/* Send Button */}
+              <button
+                className={`flex items-center justify-center rounded-full p-1.5 text-white transition-colors md:p-2 ${
+                  inputValue.trim()
+                    ? 'bg-black hover:bg-zinc-700'
+                    : 'cursor-default bg-gray-300 hover:bg-gray-400'
+                }`}
+                title={isStreaming ? 'Stop' : 'Send'}
+                type='button'
+                onClick={(e) => {
+                  e.stopPropagation()
+                  if (isStreaming) {
+                    onStopStreaming?.()
+                  } else {
                     handleSubmit()
                   }
                 }}
-              />
-
-              <div className='pointer-events-none absolute top-0 left-0 flex h-full w-full items-center'>
-                {!isActive && !inputValue && (
+              >
+                {isStreaming ? (
+                  <>
+                    <Square size={16} className='md:hidden' />
+                    <Square size={18} className='hidden md:block' />
+                  </>
+                ) : (
                   <>
-                    {/* Mobile placeholder */}
-                    <div
-                      className='-translate-y-1/2 absolute top-1/2 left-3 select-none text-gray-400 md:hidden'
-                      style={{
-                        whiteSpace: 'nowrap',
-                        zIndex: 0,
-                        background:
-                          'linear-gradient(90deg, rgba(150,150,150,0.2) 0%, rgba(150,150,150,0.8) 50%, rgba(150,150,150,0.2) 100%)',
-                        backgroundSize: '200% 100%',
-                        WebkitBackgroundClip: 'text',
-                        WebkitTextFillColor: 'transparent',
-                        animation: 'shimmer 10s infinite linear',
-                      }}
-                    >
-                      {PLACEHOLDER_MOBILE}
-                    </div>
-                    {/* Desktop placeholder */}
-                    <div
-                      className='-translate-y-1/2 absolute top-1/2 left-3 hidden select-none text-gray-400 md:block'
-                      style={{
-                        whiteSpace: 'nowrap',
-                        zIndex: 0,
-                        background:
-                          'linear-gradient(90deg, rgba(150,150,150,0.2) 0%, rgba(150,150,150,0.8) 50%, rgba(150,150,150,0.2) 100%)',
-                        backgroundSize: '200% 100%',
-                        WebkitBackgroundClip: 'text',
-                        WebkitTextFillColor: 'transparent',
-                        animation: 'shimmer 10s infinite linear',
-                      }}
-                    >
-                      {PLACEHOLDER_DESKTOP}
-                      <style jsx global>{`
-                        @keyframes shimmer {
-                          0% {
-                            background-position: 200% 0;
-                          }
-                          100% {
-                            background-position: -200% 0;
-                          }
-                        }
-                      `}</style>
-                    </div>
+                    <Send size={16} className='md:hidden' />
+                    <Send size={18} className='hidden md:block' />
                   </>
                 )}
-              </div>
+              </button>
             </div>
-
-            <button
-              className='flex items-center justify-center rounded-full bg-black p-3 text-white hover:bg-zinc-700'
-              title={isStreaming ? 'Stop' : 'Send'}
-              type='button'
-              onClick={(e) => {
-                e.stopPropagation()
-                if (isStreaming) {
-                  onStopStreaming?.()
-                } else {
-                  handleSubmit()
-                }
-              }}
-            >
-              {isStreaming ? <Square size={18} /> : <Send size={18} />}
-            </button>
-          </div>
-        </motion.div>
+          </motion.div>
+        </div>
       </div>
     </>
   )
diff --git a/apps/sim/app/chat/[subdomain]/components/input/voice-input.tsx b/apps/sim/app/chat/[subdomain]/components/input/voice-input.tsx
index 2eda962ca90..3092457ec07 100644
--- a/apps/sim/app/chat/[subdomain]/components/input/voice-input.tsx
+++ b/apps/sim/app/chat/[subdomain]/components/input/voice-input.tsx
@@ -43,6 +43,7 @@ interface VoiceInputProps {
   isListening?: boolean
   disabled?: boolean
   large?: boolean
+  minimal?: boolean
 }
 
 export function VoiceInput({
@@ -50,6 +51,7 @@ export function VoiceInput({
   isListening = false,
   disabled = false,
   large = false,
+  minimal = false,
 }: VoiceInputProps) {
   const [isSupported, setIsSupported] = useState(false)
 
@@ -68,6 +70,24 @@ export function VoiceInput({
     return null
   }
 
+  if (minimal) {
+    return (
+      <motion.button
+        type='button'
+        onClick={handleVoiceClick}
+        disabled={disabled}
+        className={`flex items-center justify-center p-1 transition-colors duration-200 ${
+          disabled ? 'cursor-not-allowed opacity-50' : 'cursor-pointer hover:text-gray-600'
+        }`}
+        whileHover={{ scale: 1.05 }}
+        whileTap={{ scale: 0.95 }}
+        title='Start voice conversation'
+      >
+        <Mic size={18} className='text-gray-500' />
+      </motion.button>
+    )
+  }
+
   if (large) {
     return (
       <div className='flex flex-col items-center'>
@@ -93,21 +113,22 @@ export function VoiceInput({
 
   return (
     <div className='flex items-center'>
-      {/* Voice Button */}
+      {/* Voice Button - Now matches send button styling */}
       <motion.button
         type='button'
         onClick={handleVoiceClick}
         disabled={disabled}
-        className={`flex items-center justify-center rounded-full p-2 transition-all duration-200 ${
+        className={`flex items-center justify-center rounded-full p-2.5 transition-all duration-200 md:p-3 ${
           isListening
             ? 'bg-red-500 text-white hover:bg-red-600'
-            : 'bg-gray-100 text-gray-600 hover:bg-gray-200'
+            : 'bg-black text-white hover:bg-zinc-700'
         } ${disabled ? 'cursor-not-allowed opacity-50' : 'cursor-pointer'}`}
         whileHover={{ scale: 1.05 }}
         whileTap={{ scale: 0.95 }}
         title='Start voice conversation'
       >
-        <Mic size={16} />
+        <Mic size={16} className='md:hidden' />
+        <Mic size={18} className='hidden md:block' />
       </motion.button>
     </div>
   )
diff --git a/apps/sim/app/chat/[subdomain]/components/voice-interface/components/particles.tsx b/apps/sim/app/chat/[subdomain]/components/voice-interface/components/particles.tsx
index 806f8be3efb..ab698f9be27 100644
--- a/apps/sim/app/chat/[subdomain]/components/voice-interface/components/particles.tsx
+++ b/apps/sim/app/chat/[subdomain]/components/voice-interface/components/particles.tsx
@@ -402,37 +402,37 @@ export function ParticlesVisualization({
       avgLevel: number
     ) => {
       if (isMuted) {
-        // Muted: dim gray-blue
-        uniforms.u_red.value = 0.4
-        uniforms.u_green.value = 0.4
-        uniforms.u_blue.value = 0.6
+        // Muted: dim purple-gray
+        uniforms.u_red.value = 0.25
+        uniforms.u_green.value = 0.1
+        uniforms.u_blue.value = 0.5
       } else if (isProcessingInterruption) {
-        // Interruption: bright orange/yellow
-        uniforms.u_red.value = 1.0
-        uniforms.u_green.value = 0.7
-        uniforms.u_blue.value = 0.2
-      } else if (isPlayingAudio) {
-        // AI speaking: bright blue-purple
+        // Interruption: bright purple
         uniforms.u_red.value = 0.6
-        uniforms.u_green.value = 0.4
-        uniforms.u_blue.value = 1.0
+        uniforms.u_green.value = 0.2
+        uniforms.u_blue.value = 0.9
+      } else if (isPlayingAudio) {
+        // AI speaking: brand purple (#701FFC)
+        uniforms.u_red.value = 0.44
+        uniforms.u_green.value = 0.12
+        uniforms.u_blue.value = 0.99
       } else if (isListening && avgLevel > 10) {
-        // User speaking: bright green-blue with intensity-based variation
+        // User speaking: lighter purple with intensity-based variation
         const intensity = Math.min(avgLevel / 50, 1)
-        uniforms.u_red.value = 0.2 + intensity * 0.3
-        uniforms.u_green.value = 0.8 + intensity * 0.2
-        uniforms.u_blue.value = 0.6 + intensity * 0.4
+        uniforms.u_red.value = 0.35 + intensity * 0.15
+        uniforms.u_green.value = 0.1 + intensity * 0.1
+        uniforms.u_blue.value = 0.8 + intensity * 0.2
       } else if (isStreaming) {
-        // AI thinking: pulsing purple
+        // AI thinking: pulsing brand purple
         const pulse = (Math.sin(elapsedTime * 2) + 1) / 2
-        uniforms.u_red.value = 0.7 + pulse * 0.3
-        uniforms.u_green.value = 0.3
-        uniforms.u_blue.value = 0.9 + pulse * 0.1
+        uniforms.u_red.value = 0.35 + pulse * 0.15
+        uniforms.u_green.value = 0.08 + pulse * 0.08
+        uniforms.u_blue.value = 0.95 + pulse * 0.05
       } else {
-        // Default idle: soft blue-purple
-        uniforms.u_red.value = 0.8
-        uniforms.u_green.value = 0.6
-        uniforms.u_blue.value = 1.0
+        // Default idle: soft brand purple
+        uniforms.u_red.value = 0.4
+        uniforms.u_green.value = 0.15
+        uniforms.u_blue.value = 0.9
       }
     }