diff --git a/src/App.tsx b/src/App.tsx
index 99556c0..45eba2a 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1,5 +1,5 @@
 import React, { useState, useEffect } from 'react';
-import { ChevronLeft, ChevronRight, Sun, Moon, Plus } from 'lucide-react';
+import { ChevronLeft, ChevronRight, Sun, Moon, Plus, Circle } from 'lucide-react';
 import { HabitList } from './components/HabitList';
 import { Calendar } from './components/Calendar';
 import { Sidebar } from './components/Sidebar';
@@ -87,8 +87,17 @@ function HabitTrackerContent() {
   };
 
   const renderHabitsView = () => (
-    <div className="flex-1">
-      <div className="max-w-5xl mx-auto">
+    <div className="flex-1 relative">
+      <div className="absolute inset-0 overflow-hidden pointer-events-none">
+        <div className="absolute top-[-10%] right-[-5%] w-[40%] h-[40%] opacity-[0.02] dark:opacity-[0.04]">
+          <Circle className="w-full h-full" />
+        </div>
+        <div className="absolute bottom-[-20%] left-[-10%] w-[50%] h-[50%] opacity-[0.015] dark:opacity-[0.03]">
+          <Circle className="w-full h-full" />
+        </div>
+      </div>
+
+      <div className="max-w-5xl mx-auto relative">
         <div className={`
           mb-8 p-4 md:p-6 
           rounded-lg shadow-md
@@ -200,17 +209,28 @@ function HabitTrackerContent() {
   );
 
   const renderCalendarView = () => (
-    <Calendar
-      currentMonth={currentMonth}
-      habits={habits}
-      onChangeMonth={changeMonth}
-      getDaysInMonth={(year, month) => new Date(year, month + 1, 0).getDate()}
-      getCompletedHabitsForDate={getCompletedHabitsForDate}
-      onToggleHabit={async (habitId, date) => {
-        await toggleHabit(habitId, date);
-        await fetchHabits();
-      }}
-    />
+    <div className="relative">
+      <div className="absolute inset-0 overflow-hidden pointer-events-none">
+        <div className="absolute top-[-15%] right-[-10%] w-[45%] h-[45%] opacity-[0.02] dark:opacity-[0.04]">
+          <Circle className="w-full h-full" />
+        </div>
+        <div className="absolute bottom-[-25%] left-[-15%] w-[55%] h-[55%] opacity-[0.015] dark:opacity-[0.03]">
+          <Circle className="w-full h-full" />
+        </div>
+      </div>
+
+      <Calendar
+        currentMonth={currentMonth}
+        habits={habits}
+        onChangeMonth={changeMonth}
+        getDaysInMonth={(year, month) => new Date(year, month + 1, 0).getDate()}
+        getCompletedHabitsForDate={getCompletedHabitsForDate}
+        onToggleHabit={async (habitId, date) => {
+          await toggleHabit(habitId, date);
+          await fetchHabits();
+        }}
+      />
+    </div>
   );
 
   if (loading) {
@@ -234,7 +254,7 @@ function HabitTrackerContent() {
         <div className="hidden md:block">
           <Sidebar activeView={activeView} setActiveView={setActiveView} />
         </div>
-        <main className="flex-1 p-4 md:p-8 overflow-y-auto pb-24 md:pb-8">
+        <main className="flex-1 p-4 md:p-8 overflow-y-auto pb-24 md:pb-8 relative">
           {activeView === 'habits' && renderHabitsView()}
           {activeView === 'calendar' && renderCalendarView()}
           {activeView === 'settings' && <SettingsView />}
diff --git a/src/styles/theme.ts b/src/styles/theme.ts
index 78d094f..3906a2b 100644
--- a/src/styles/theme.ts
+++ b/src/styles/theme.ts
@@ -1,8 +1,8 @@
 export const lightTheme = {
   // Background colors
-  background: 'bg-[#ffffff]',
-  cardBackground: 'bg-[#ffffff]',
-  sidebarBackground: 'bg-[#fbfbfa]',
+  background: 'bg-[#fafafa]',
+  cardBackground: 'bg-white/80 backdrop-blur-[2px]',
+  sidebarBackground: 'bg-white/90 backdrop-blur-[2px]',
   
   // Text colors
   text: 'text-[#37352f]',
@@ -31,11 +31,11 @@ export const lightTheme = {
   
   // Calendar specific (expanded)
   calendar: {
-    background: 'bg-[#ffffff]',
+    background: 'bg-white/80 backdrop-blur-[2px]',
     header: 'text-[#37352f]',
     weekDay: 'text-[#787774]',
     day: {
-      default: 'bg-[#ffffff] hover:bg-[#f1f1ef] text-[#37352f] shadow-sm',
+      default: 'bg-white/90 hover:bg-[#f1f1ef] text-[#37352f] shadow-sm',
       selected: 'bg-[#37352f] text-white',
       today: 'ring-1 ring-inset ring-black/5 dark:ring-white/5',
       otherMonth: 'text-[#787774] bg-[#fafafa]'
@@ -45,7 +45,7 @@ export const lightTheme = {
       icon: 'h-5 w-5 text-[#37352f]'
     },
     tooltip: {
-      background: 'bg-[#ffffff]',
+      background: 'bg-white/95 backdrop-blur-[4px]',
       border: 'border-[#e9e9e8]',
       shadow: 'shadow-lg shadow-[#00000008]'
     }
@@ -61,60 +61,60 @@ export const lightTheme = {
 export const darkTheme = {
   // Background colors
   background: 'bg-[#191919]',
-  cardBackground: 'bg-[#2f2f2f]',
-  sidebarBackground: 'bg-[#191919]',
+  cardBackground: 'bg-[#232323]/80 backdrop-blur-[2px]',
+  sidebarBackground: 'bg-[#1d1d1d]/90 backdrop-blur-[2px]',
   
   // Text colors
-  text: 'text-[#ffffff]',
+  text: 'text-[#e6e6e6]',
   mutedText: 'text-[#999999]',
   
   // Border colors
-  border: 'border-[#393939]',
+  border: 'border-[#2a2a2a]',
   
   // Interactive elements
   button: {
-    primary: 'bg-[#ffffff] text-[#191919] hover:bg-[#e6e6e6]',
-    secondary: 'bg-[#363636] text-[#ffffff] hover:bg-[#424242]',
-    icon: 'hover:bg-[#363636] text-[#ffffff]'
+    primary: 'bg-[#e6e6e6] text-[#191919] hover:bg-[#d1d1d1]',
+    secondary: 'bg-[#2a2a2a] text-[#e6e6e6] hover:bg-[#333333]',
+    icon: 'hover:bg-[#2a2a2a] text-[#e6e6e6]'
   },
   
   // Input elements
-  input: 'bg-[#2f2f2f] border-[#393939] focus:border-[#525252] text-[#ffffff]',
+  input: 'bg-[#232323] border-[#2a2a2a] focus:border-[#404040] text-[#e6e6e6]',
   
   // Calendar specific
-  calendarDay: 'bg-[#2f2f2f] hover:bg-[#363636]',
-  calendarDaySelected: 'bg-[#ffffff] text-[#191919]',
+  calendarDay: 'bg-[#232323] hover:bg-[#2a2a2a]',
+  calendarDaySelected: 'bg-[#e6e6e6] text-[#191919]',
   
   // Habit list specific
-  habitItem: 'hover:bg-[#363636]',
-  habitCheckbox: 'border-[#393939] text-[#ffffff]',
+  habitItem: 'hover:bg-[#2a2a2a]',
+  habitCheckbox: 'border-[#2a2a2a] text-[#e6e6e6]',
   
   // Calendar specific (expanded)
   calendar: {
-    background: 'bg-[#191919]',
-    header: 'text-[#ffffff]',
+    background: 'bg-[#232323]/90 backdrop-blur-[2px]',
+    header: 'text-[#e6e6e6]',
     weekDay: 'text-[#999999]',
     day: {
-      default: 'bg-[#2f2f2f] hover:bg-[#363636] text-[#ffffff] shadow-md shadow-[#00000030]',
-      selected: 'bg-[#ffffff] text-[#191919]',
+      default: 'bg-[#232323]/90 hover:bg-[#2a2a2a] text-[#e6e6e6] shadow-sm shadow-[#00000015]',
+      selected: 'bg-[#e6e6e6] text-[#191919]',
       today: 'ring-1 ring-inset ring-white/10',
-      otherMonth: 'text-[#666666] bg-[#242424]'
+      otherMonth: 'text-[#666666] bg-[#1f1f1f]'
     },
     navigation: {
-      button: 'hover:bg-[#363636] text-[#ffffff]',
-      icon: 'h-5 w-5 text-[#ffffff]'
+      button: 'hover:bg-[#2a2a2a] text-[#e6e6e6]',
+      icon: 'h-5 w-5 text-[#e6e6e6]'
     },
     tooltip: {
-      background: 'bg-[#2f2f2f]',
-      border: 'border-[#393939]',
-      shadow: 'shadow-lg shadow-[#00000050]'
+      background: 'bg-[#232323]/95 backdrop-blur-[4px]',
+      border: 'border-[#2a2a2a]',
+      shadow: 'shadow-lg shadow-[#00000030]'
     }
   },
   
   // Navigation
   nav: {
-    active: 'bg-[#363636]/80 text-white shadow-inner',
-    inactive: 'text-white/70 hover:bg-[#363636]/50'
+    active: 'bg-[#2a2a2a]/80 text-[#e6e6e6] shadow-inner',
+    inactive: 'text-[#e6e6e6]/80 hover:bg-[#2a2a2a]/50'
   }
 };