diff --git a/src/app/(dashboard)/profile/page.tsx b/src/app/(dashboard)/profile/page.tsx
index f5bdb6b..e7b2567 100755
--- a/src/app/(dashboard)/profile/page.tsx
+++ b/src/app/(dashboard)/profile/page.tsx
@@ -43,7 +43,7 @@ function ProfileContent({ user }: { user: ProfileUser }) {
         {/* Profile Information */}
         <div className="space-y-6 lg:col-span-2">
           {/* Basic Information */}
-          <Card>
+          <Card className="hover:shadow-md transition-shadow duration-200">
             <CardHeader>
               <CardTitle>Basic Information</CardTitle>
               <CardDescription>
@@ -63,7 +63,7 @@ function ProfileContent({ user }: { user: ProfileUser }) {
           </Card>
 
           {/* Password Change */}
-          <Card>
+          <Card className="hover:shadow-md transition-shadow duration-200">
             <CardHeader>
               <CardTitle>Password</CardTitle>
               <CardDescription>Change your account password</CardDescription>
@@ -116,7 +116,7 @@ function ProfileContent({ user }: { user: ProfileUser }) {
         {/* Sidebar */}
         <div className="space-y-6">
           {/* User Summary */}
-          <Card>
+          <Card className="hover:shadow-md transition-shadow duration-200">
             <CardHeader>
               <CardTitle>Account Summary</CardTitle>
             </CardHeader>
diff --git a/src/app/(dashboard)/studies/[id]/experiments/[experimentId]/designer/DesignerPageClient.tsx b/src/app/(dashboard)/studies/[id]/experiments/[experimentId]/designer/DesignerPageClient.tsx
index aae68a5..fa108b8 100755
--- a/src/app/(dashboard)/studies/[id]/experiments/[experimentId]/designer/DesignerPageClient.tsx
+++ b/src/app/(dashboard)/studies/[id]/experiments/[experimentId]/designer/DesignerPageClient.tsx
@@ -56,6 +56,8 @@ export function DesignerPageClient({
   ]);
 
   return (
-    <DesignerRoot experimentId={experiment.id} initialDesign={initialDesign} />
+    <div className="h-[calc(100vh-4rem-2rem)] w-full overflow-hidden border rounded-lg bg-background">
+      <DesignerRoot experimentId={experiment.id} initialDesign={initialDesign} />
+    </div>
   );
 }
diff --git a/src/app/dashboard/page.tsx b/src/app/dashboard/page.tsx
index 2b1c5fa..5400aaa 100755
--- a/src/app/dashboard/page.tsx
+++ b/src/app/dashboard/page.tsx
@@ -185,7 +185,7 @@ export default function DashboardPage() {
               ) : (
                 <div className="space-y-4">
                   {scheduledTrials.map((trial) => (
-                    <div key={trial.id} className="flex items-center justify-between rounded-lg border p-3 hover:bg-muted/50 transition-colors">
+                    <div key={trial.id} className="flex items-center justify-between rounded-lg border p-3 bg-muted/10 hover:bg-muted/50 hover:shadow-sm transition-all duration-200">
                       <div className="flex items-center gap-4">
                         <div className="flex h-10 w-10 items-center justify-center rounded-full bg-blue-100 dark:bg-blue-900/30 text-blue-600 dark:text-blue-400">
                           <Calendar className="h-5 w-5" />
@@ -302,7 +302,7 @@ function StatsCard({
   trend?: string;
 }) {
   return (
-    <Card className="border-muted/40 shadow-sm">
+    <Card className="border-muted/40 shadow-sm hover:shadow-md transition-all duration-200 hover:border-primary/20">
       <CardHeader className="flex flex-row items-center justify-between space-y-0 pb-2">
         <CardTitle className="text-sm font-medium">{title}</CardTitle>
         <Icon className="h-4 w-4 text-muted-foreground" />
diff --git a/src/components/experiments/designer/layout/PanelsContainer.tsx b/src/components/experiments/designer/layout/PanelsContainer.tsx
index 8bf80da..327e603 100755
--- a/src/components/experiments/designer/layout/PanelsContainer.tsx
+++ b/src/components/experiments/designer/layout/PanelsContainer.tsx
@@ -2,7 +2,9 @@
 
 import * as React from "react";
 import { cn } from "~/lib/utils";
-
+import { Sheet, SheetContent, SheetTrigger } from "~/components/ui/sheet";
+import { Button } from "~/components/ui/button";
+import { PanelLeft, Settings2 } from "lucide-react";
 type Edge = "left" | "right";
 
 export interface PanelsContainerProps {
@@ -261,81 +263,128 @@ export function PanelsContainer({
 
 
   return (
-    <div
-      ref={rootRef}
-      aria-label={ariaLabel}
-      style={styleVars}
-      className={cn(
-        "relative grid h-full min-h-0 w-full overflow-hidden select-none",
-        gridCols,
-        className,
-      )}
-    >
-      {hasLeft && (
-        <Panel
-          panelClassName={panelClassName}
-          contentClassName={contentClassName}
-        >
-          {left}
-        </Panel>
-      )}
+    <>
+      {/* Mobile Layout (Flex + Sheets) */}
+      <div className={cn("flex flex-col h-full w-full md:hidden", className)}>
+        {/* Mobile Header/Toolbar for access to panels */}
+        <div className="flex items-center justify-between border-b px-4 py-2 bg-background">
+          <div className="flex items-center gap-2">
+            {hasLeft && (
+              <Sheet>
+                <SheetTrigger asChild>
+                  <Button variant="outline" size="icon" className="h-8 w-8">
+                    <PanelLeft className="h-4 w-4" />
+                  </Button>
+                </SheetTrigger>
+                <SheetContent side="left" className="w-[85vw] p-0 sm:max-w-md">
+                  <div className="h-full overflow-hidden">
+                    {left}
+                  </div>
+                </SheetContent>
+              </Sheet>
+            )}
+            <span className="text-sm font-medium">Designer</span>
+          </div>
 
-      {hasCenter && (
-        <Panel
-          className={centerDividers}
-          panelClassName={panelClassName}
-          contentClassName={contentClassName}
-        >
+          {hasRight && (
+            <Sheet>
+              <SheetTrigger asChild>
+                <Button variant="outline" size="icon" className="h-8 w-8">
+                  <Settings2 className="h-4 w-4" />
+                </Button>
+              </SheetTrigger>
+              <SheetContent side="right" className="w-[85vw] p-0 sm:max-w-md">
+                <div className="h-full overflow-hidden">
+                  {right}
+                </div>
+              </SheetContent>
+            </Sheet>
+          )}
+        </div>
+
+        {/* Main Content (Center) */}
+        <div className="flex-1 min-h-0 overflow-hidden relative">
           {center}
-        </Panel>
-      )}
+        </div>
+      </div>
 
-      {hasRight && (
-        <Panel
-          panelClassName={panelClassName}
-          contentClassName={contentClassName}
-        >
-          {right}
-        </Panel>
-      )}
+      {/* Desktop Layout (Grid) */}
+      <div
+        ref={rootRef}
+        aria-label={ariaLabel}
+        style={styleVars}
+        className={cn(
+          "relative hidden md:grid h-full min-h-0 w-full overflow-hidden select-none",
+          gridCols,
+          className,
+        )}
+      >
+        {hasLeft && (
+          <Panel
+            panelClassName={panelClassName}
+            contentClassName={contentClassName}
+          >
+            {left}
+          </Panel>
+        )}
 
-      {/* Resize handles (only render where applicable) */}
-      {hasCenter && hasLeft && (
-        <button
-          type="button"
-          role="separator"
-          aria-label="Resize left panel"
-          aria-orientation="vertical"
-          onPointerDown={startDrag("left")}
-          onKeyDown={onKeyResize("left")}
-          className={cn(
-            "absolute inset-y-0 z-10 w-1 cursor-col-resize outline-none",
-            "focus-visible:ring-ring focus-visible:ring-2",
-          )}
-          // Position at the boundary between left and center
-          style={{ left: "var(--col-left)", transform: "translateX(-0.5px)" }}
-          tabIndex={0}
-        />
-      )}
+        {hasCenter && (
+          <Panel
+            className={centerDividers}
+            panelClassName={panelClassName}
+            contentClassName={contentClassName}
+          >
+            {center}
+          </Panel>
+        )}
 
-      {hasCenter && hasRight && (
-        <button
-          type="button"
-          role="separator"
-          aria-label="Resize right panel"
-          aria-orientation="vertical"
-          onPointerDown={startDrag("right")}
-          onKeyDown={onKeyResize("right")}
-          className={cn(
-            "absolute inset-y-0 z-10 w-1 cursor-col-resize outline-none",
-            "focus-visible:ring-ring focus-visible:ring-2",
-          )}
-          // Position at the boundary between center and right (offset from the right)
-          style={{ right: "var(--col-right)", transform: "translateX(0.5px)" }}
-          tabIndex={0}
-        />
-      )}
-    </div>
+        {hasRight && (
+          <Panel
+            panelClassName={panelClassName}
+            contentClassName={contentClassName}
+          >
+            {right}
+          </Panel>
+        )}
+
+        {/* Resize handles (only render where applicable) */}
+        {hasCenter && hasLeft && (
+          <button
+            type="button"
+            role="separator"
+            aria-label="Resize left panel"
+            aria-orientation="vertical"
+            onPointerDown={startDrag("left")}
+            onKeyDown={onKeyResize("left")}
+            className={cn(
+              "absolute inset-y-0 z-10 w-1 cursor-col-resize outline-none",
+              "focus-visible:ring-ring focus-visible:ring-2",
+            )}
+            // Position at the boundary between left and center
+            style={{ left: "var(--col-left)", transform: "translateX(-0.5px)" }}
+            tabIndex={0}
+          />
+        )}
+
+        {hasCenter && hasRight && (
+          <button
+            type="button"
+            role="separator"
+            aria-label="Resize right panel"
+            aria-orientation="vertical"
+            onPointerDown={startDrag("right")}
+            onKeyDown={onKeyResize("right")}
+            className={cn(
+              "absolute inset-y-0 z-10 w-1 cursor-col-resize outline-none",
+              "focus-visible:ring-ring focus-visible:ring-2",
+            )}
+            // Position at the boundary between center and right (offset from the right)
+            style={{ right: "var(--col-right)", transform: "translateX(0.5px)" }}
+            tabIndex={0}
+          />
+        )}
+      </div>
+    </>
   );
 }
 
diff --git a/src/components/ui/data-table.tsx b/src/components/ui/data-table.tsx
index b9d3a23..eb86883 100755
--- a/src/components/ui/data-table.tsx
+++ b/src/components/ui/data-table.tsx
@@ -211,7 +211,7 @@ export function DataTable<TData, TValue>({
           </DropdownMenu>
         </div>
       </div>
-      <div className="min-w-0 overflow-hidden rounded-md border">
+      <div className="min-w-0 overflow-hidden rounded-md border shadow-sm bg-card">
         <div className="min-w-0 overflow-x-auto overflow-y-hidden">
           <Table className="min-w-[600px]">
             <TableHeader>
diff --git a/src/components/ui/logo.tsx b/src/components/ui/logo.tsx
index 270be78..a991129 100755
--- a/src/components/ui/logo.tsx
+++ b/src/components/ui/logo.tsx
@@ -20,7 +20,7 @@ export function Logo({
 }: LogoProps) {
   return (
     <div className={cn("flex items-center gap-2", className)}>
-      <div className="bg-sidebar-primary text-sidebar-primary-foreground flex aspect-square items-center justify-center rounded-lg p-1">
+      <div className="bg-primary text-primary-foreground flex aspect-square items-center justify-center rounded-lg p-1">
         <Bot className={iconSizes[iconSize]} />
       </div>
       {showText && (
diff --git a/src/components/ui/table.tsx b/src/components/ui/table.tsx
index ba9feb1..46eec3a 100755
--- a/src/components/ui/table.tsx
+++ b/src/components/ui/table.tsx
@@ -18,7 +18,7 @@ function TableHeader({ className, ...props }: React.ComponentProps<"thead">) {
   return (
     <thead
       data-slot="table-header"
-      className={cn("[&_tr]:border-b", className)}
+      className={cn("[&_tr]:border-b bg-secondary/30", className)}
       {...props}
     />
   );
diff --git a/src/styles/globals.css b/src/styles/globals.css
index 7efc970..079ac0e 100755
--- a/src/styles/globals.css
+++ b/src/styles/globals.css
@@ -72,39 +72,48 @@
 }
 
 :root {
-  --radius: 0rem;
-  --background: oklch(0.98 0.005 60);
-  --foreground: oklch(0.15 0.005 240);
-  --card: oklch(0.995 0.001 60);
-  --card-foreground: oklch(0.15 0.005 240);
-  --popover: oklch(0.99 0.002 60);
-  --popover-foreground: oklch(0.15 0.005 240);
-  --primary: oklch(0.55 0.08 240);
-  --primary-foreground: oklch(0.98 0.01 250);
-  --secondary: oklch(0.94 0.01 240);
-  --secondary-foreground: oklch(0.25 0.02 240);
-  --muted: oklch(0.95 0.008 240);
-  --muted-foreground: oklch(0.52 0.015 240);
-  --accent: oklch(0.92 0.015 240);
-  --accent-foreground: oklch(0.2 0.02 240);
-  --destructive: oklch(0.583 0.2387 28.4765);
-  --border: oklch(0.9 0.008 240);
-  --input: oklch(0.96 0.005 240);
-  --ring: oklch(0.55 0.08 240);
-  --chart-1: oklch(0.55 0.08 240);
-  --chart-2: oklch(0.6 0.1 200);
-  --chart-3: oklch(0.65 0.12 160);
-  --chart-4: oklch(0.7 0.1 120);
-  --chart-5: oklch(0.6 0.15 80);
-  --sidebar: oklch(0.97 0.015 250);
-  --sidebar-foreground: oklch(0.2 0.03 240);
-  --sidebar-primary: oklch(0.3 0.08 240);
-  --sidebar-primary-foreground: oklch(0.98 0.01 250);
-  --sidebar-accent: oklch(0.92 0.025 245);
-  --sidebar-accent-foreground: oklch(0.25 0.05 240);
-  --sidebar-border: oklch(0.85 0.03 245);
-  --sidebar-ring: oklch(0.6 0.05 240);
-  --destructive-foreground: oklch(0.9702 0 0);
+  /* Light Mode (Inverted: White BG, gray Cards) */
+  --radius: 0.5rem;
+  --background: hsl(0 0% 100%);
+  /* Pure White Background */
+  --foreground: hsl(240 10% 3.9%);
+  --card: hsl(240 4.8% 95.9%);
+  /* Light Gray Card */
+  --card-foreground: hsl(240 10% 3.9%);
+  --popover: hsl(0 0% 100%);
+  --popover-foreground: hsl(240 10% 3.9%);
+  --primary: hsl(221.2 83.2% 53.3%);
+  /* Indigo-600 */
+  --primary-foreground: hsl(210 40% 98%);
+  --secondary: hsl(210 40% 96.1%);
+  --secondary-foreground: hsl(222.2 47.4% 11.2%);
+  --muted: hsl(210 40% 96.1%);
+  --muted-foreground: hsl(215.4 16.3% 46.9%);
+  --accent: hsl(210 40% 96.1%);
+  --accent-foreground: hsl(222.2 47.4% 11.2%);
+  --destructive: hsl(0 84.2% 60.2%);
+  --destructive-foreground: hsl(210 40% 98%);
+  --border: hsl(214.3 31.8% 91.4%);
+  --input: hsl(214.3 31.8% 91.4%);
+  --ring: hsl(221.2 83.2% 53.3%);
+  --chart-1: hsl(221.2 83.2% 53.3%);
+  --chart-2: hsl(173 58% 39%);
+  --chart-3: hsl(197 37% 24%);
+  --chart-4: hsl(43 74% 66%);
+  --chart-5: hsl(27 87% 67%);
+  --sidebar: hsl(240 4.8% 95.9%);
+  /* Zinc-100: Distinct contrast against white BG */
+  --sidebar-foreground: hsl(240 10% 3.9%);
+  /* Dark Text */
+  --sidebar-primary: hsl(221.2 83.2% 53.3%);
+  /* Indigo Accent */
+  --sidebar-primary-foreground: hsl(0 0% 98%);
+  --sidebar-accent: hsl(240 5.9% 90%);
+  /* Zinc-200: Slightly darker for hover */
+  --sidebar-accent-foreground: hsl(240 5.9% 10%);
+  --sidebar-border: hsl(240 5.9% 90%);
+  /* Zinc-200 Border */
+  --sidebar-ring: hsl(217.2 91.2% 59.8%);
 
   --shadow-color: hsl(0 0% 0%);
   --shadow-opacity: 0;
@@ -131,75 +140,81 @@
 
 @media (prefers-color-scheme: dark) {
   :root {
-    --background: oklch(0.12 0.008 250);
-    --foreground: oklch(0.95 0.005 250);
-    --card: oklch(0.18 0.008 250);
-    --card-foreground: oklch(0.95 0.005 250);
-    --popover: oklch(0.2 0.01 250);
-    --popover-foreground: oklch(0.95 0.005 250);
-    --primary: oklch(0.65 0.1 240);
-    --primary-foreground: oklch(0.08 0.02 250);
-    --secondary: oklch(0.25 0.015 245);
-    --secondary-foreground: oklch(0.92 0.008 250);
-    --muted: oklch(0.22 0.01 250);
-    --muted-foreground: oklch(0.65 0.02 245);
-    --accent: oklch(0.35 0.025 245);
-    --accent-foreground: oklch(0.92 0.008 250);
-    --destructive: oklch(0.7022 0.1892 22.2279);
-    --border: oklch(0.3 0.015 250);
-    --input: oklch(0.28 0.015 250);
-    --ring: oklch(0.65 0.1 240);
-    --chart-1: oklch(0.65 0.1 240);
-    --chart-2: oklch(0.7 0.12 200);
-    --chart-3: oklch(0.75 0.15 160);
-    --chart-4: oklch(0.8 0.12 120);
-    --chart-5: oklch(0.7 0.18 80);
-    --sidebar: oklch(0.14 0.025 250);
-    --sidebar-foreground: oklch(0.88 0.02 250);
-    --sidebar-primary: oklch(0.8 0.06 240);
-    --sidebar-primary-foreground: oklch(0.12 0.025 250);
-    --sidebar-accent: oklch(0.22 0.04 245);
-    --sidebar-accent-foreground: oklch(0.88 0.02 250);
-    --sidebar-border: oklch(0.32 0.035 250);
-    --sidebar-ring: oklch(0.55 0.08 240);
-    --destructive-foreground: oklch(0.95 0.01 250);
+    /* Dark Mode (Inverted: Lighter BG, Black Cards) */
+    --background: hsl(240 3.7% 15.9%);
+    /* Lighter Dark BG */
+    --foreground: hsl(0 0% 98%);
+    --card: hsl(240 10% 3.9%);
+    /* Deep Black Card */
+    --card-foreground: hsl(0 0% 98%);
+    --popover: hsl(240 10% 3.9%);
+    --popover-foreground: hsl(0 0% 98%);
+    --primary: hsl(0 0% 98%);
+    --primary-foreground: hsl(240 5.9% 10%);
+    --secondary: hsl(240 3.7% 15.9%);
+    --secondary-foreground: hsl(0 0% 98%);
+    --muted: hsl(240 3.7% 15.9%);
+    --muted-foreground: hsl(240 5% 64.9%);
+    --accent: hsl(240 3.7% 15.9%);
+    --accent-foreground: hsl(0 0% 98%);
+    --destructive: hsl(0 62.8% 30.6%);
+    --destructive-foreground: hsl(0 0% 98%);
+    --border: hsl(240 3.7% 15.9%);
+    --input: hsl(240 3.7% 15.9%);
+    --ring: hsl(240 4.9% 83.9%);
+    --chart-1: hsl(220 70% 50%);
+    --chart-2: hsl(160 60% 45%);
+    --chart-3: hsl(30 80% 55%);
+    --chart-4: hsl(280 65% 60%);
+    --chart-5: hsl(340 75% 55%);
+    --sidebar: hsl(240 5.9% 10%);
+    --sidebar-foreground: hsl(240 4.8% 95.9%);
+    --sidebar-primary: hsl(224.3 76.3% 48%);
+    --sidebar-primary-foreground: hsl(0 0% 100%);
+    --sidebar-accent: hsl(240 3.7% 15.9%);
+    --sidebar-accent-foreground: hsl(240 4.8% 95.9%);
+    --sidebar-border: hsl(240 3.7% 15.9%);
+    --sidebar-ring: hsl(217.2 91.2% 59.8%);
   }
 }
 
 @layer base {
   .dark {
-    --background: oklch(0.12 0.008 250);
-    --foreground: oklch(0.95 0.005 250);
-    --card: oklch(0.18 0.008 250);
-    --card-foreground: oklch(0.95 0.005 250);
-    --popover: oklch(0.2 0.01 250);
-    --popover-foreground: oklch(0.95 0.005 250);
-    --primary: oklch(0.65 0.1 240);
-    --primary-foreground: oklch(0.08 0.02 250);
-    --secondary: oklch(0.25 0.015 245);
-    --secondary-foreground: oklch(0.92 0.008 250);
-    --muted: oklch(0.22 0.01 250);
-    --muted-foreground: oklch(0.65 0.02 245);
-    --accent: oklch(0.35 0.025 245);
-    --accent-foreground: oklch(0.92 0.008 250);
-    --destructive: oklch(0.7022 0.1892 22.2279);
-    --border: oklch(0.3 0.015 250);
-    --input: oklch(0.28 0.015 250);
-    --ring: oklch(0.65 0.1 240);
-    --chart-1: oklch(0.65 0.1 240);
-    --chart-2: oklch(0.7 0.12 200);
-    --chart-3: oklch(0.75 0.15 160);
-    --chart-4: oklch(0.8 0.12 120);
-    --chart-5: oklch(0.7 0.18 80);
-    --sidebar: oklch(0.14 0.025 250);
-    --sidebar-foreground: oklch(0.88 0.02 250);
-    --sidebar-primary: oklch(0.8 0.06 240);
-    --sidebar-primary-foreground: oklch(0.12 0.025 250);
-    --sidebar-accent: oklch(0.22 0.04 245);
-    --sidebar-accent-foreground: oklch(0.88 0.02 250);
-    --sidebar-border: oklch(0.32 0.035 250);
-    --sidebar-ring: oklch(0.55 0.08 240);
-    --destructive-foreground: oklch(0.95 0.01 250);
+    /* Dark Mode (Zinc) */
+    --background: hsl(240 10% 3.9%);
+    --foreground: hsl(0 0% 98%);
+    --card: hsl(240 3.7% 15.9%);
+    --card-foreground: hsl(0 0% 98%);
+    --popover: hsl(240 10% 3.9%);
+    --popover-foreground: hsl(0 0% 98%);
+    --primary: hsl(217.2 91.2% 59.8%);
+    /* Indigo-400 */
+    --primary-foreground: hsl(222.2 47.4% 11.2%);
+    --secondary: hsl(217.2 32.6% 17.5%);
+    --secondary-foreground: hsl(210 40% 98%);
+    --muted: hsl(217.2 32.6% 17.5%);
+    --muted-foreground: hsl(215 20.2% 65.1%);
+    --accent: hsl(217.2 32.6% 17.5%);
+    --accent-foreground: hsl(210 40% 98%);
+    --destructive: hsl(0 62.8% 30.6%);
+    --destructive-foreground: hsl(210 40% 98%);
+    --border: hsl(217.2 32.6% 17.5%);
+    --input: hsl(217.2 32.6% 17.5%);
+    --ring: hsl(217.2 91.2% 59.8%);
+    --chart-1: hsl(220 70% 50%);
+    --chart-2: hsl(160 60% 45%);
+    --chart-3: hsl(30 80% 55%);
+    --chart-4: hsl(280 65% 60%);
+    --chart-5: hsl(340 75% 55%);
+    --sidebar: hsl(240 5.9% 10%);
+    --sidebar-foreground: hsl(240 4.8% 95.9%);
+    --sidebar-primary: hsl(224.3 76.3% 48%);
+    --sidebar-primary-foreground: hsl(0 0% 100%);
+    --sidebar-accent: hsl(240 3.7% 15.9%);
+    --sidebar-accent-foreground: hsl(240 4.8% 95.9%);
+    --sidebar-border: hsl(240 3.7% 15.9%);
+    --sidebar-ring: hsl(217.2 91.2% 59.8%);
+
   }
 }
 
@@ -207,6 +222,7 @@
   * {
     @apply border-border outline-ring/50;
   }
+
   body {
     @apply bg-background text-foreground;
     letter-spacing: var(--tracking-normal);
@@ -224,4 +240,4 @@
   [data-slot="tabs-trigger"][data-state="active"] {
     @apply bg-background text-foreground shadow;
   }
-}
+}
\ No newline at end of file