diff --git a/dashboard/habits.html b/dashboard/habits.html
index e540835..1a236dd 100644
--- a/dashboard/habits.html
+++ b/dashboard/habits.html
@@ -86,6 +86,96 @@
             .filter-group {
                 width: 100%;
             }
+            
+            /* Mobile touch targets - minimum 44px */
+            .habit-card-action-btn {
+                min-width: 44px;
+                min-height: 44px;
+            }
+            
+            .habit-card-check-btn {
+                min-height: 48px;
+                font-size: var(--text-lg);
+            }
+            
+            .habit-card-skip-btn {
+                min-height: 44px;
+                padding: var(--space-2) var(--space-3);
+            }
+            
+            .modal-close {
+                min-width: 44px;
+                min-height: 44px;
+            }
+            
+            /* Stats row 2x2 on mobile */
+            .stats-row {
+                grid-template-columns: repeat(2, 1fr);
+            }
+            
+            /* Icon and color pickers wrap properly */
+            .color-picker-swatches {
+                grid-template-columns: repeat(4, 1fr);
+            }
+            
+            .icon-picker-grid {
+                grid-template-columns: repeat(4, 1fr);
+                max-height: 300px;
+            }
+            
+            /* Day checkboxes wrap on small screens */
+            .day-checkboxes {
+                grid-template-columns: repeat(4, 1fr);
+            }
+            
+            /* Modal padding adjustment */
+            .modal {
+                margin: var(--space-2);
+            }
+            
+            .modal-body,
+            .modal-header,
+            .modal-footer {
+                padding: var(--space-3);
+            }
+            
+            /* Touch-friendly form elements */
+            .form-input,
+            .form-select,
+            .form-textarea {
+                min-height: 44px;
+                font-size: var(--text-base);
+            }
+            
+            /* Larger touch targets for pickers */
+            .color-swatch {
+                min-height: 44px;
+            }
+            
+            .icon-option {
+                min-height: 44px;
+            }
+            
+            .icon-option svg {
+                width: 24px;
+                height: 24px;
+            }
+            
+            .day-checkbox-label {
+                min-height: 44px;
+                padding: var(--space-1);
+            }
+            
+            /* Mood and rating buttons */
+            .mood-btn {
+                min-width: 44px;
+                min-height: 44px;
+                font-size: 36px;
+            }
+            
+            .rating-star {
+                font-size: 36px;
+            }
         }
         
         /* Habits grid */
diff --git a/dashboard/swipe-nav.js b/dashboard/swipe-nav.js
index 728016b..5f0322a 100644
--- a/dashboard/swipe-nav.js
+++ b/dashboard/swipe-nav.js
@@ -3,7 +3,7 @@
  * Swipe left/right to navigate between pages
  */
 (function() {
-    const pages = ['index.html', 'notes.html', 'files.html'];
+    const pages = ['index.html', 'notes.html', 'habits.html', 'files.html', 'workspace.html'];
     
     // Get current page index
     function getCurrentIndex() {
diff --git a/dashboard/tests/test_habits_frontend.py b/dashboard/tests/test_habits_frontend.py
index 68fc7e2..b304776 100644
--- a/dashboard/tests/test_habits_frontend.py
+++ b/dashboard/tests/test_habits_frontend.py
@@ -8,6 +8,7 @@ Story US-010: Frontend - Check-in interaction (click and long-press)
 Story US-011: Frontend - Skip, lives display, and delete confirmation
 Story US-012: Frontend - Filter and sort controls
 Story US-013: Frontend - Stats section and weekly summary
+Story US-014: Frontend - Mobile responsive and touch optimization
 """
 
 import sys
@@ -1466,6 +1467,138 @@ def test_typecheck_us013():
     assert result == 0, "api.py should pass typecheck (syntax check)"
     print("✓ Test 89: Typecheck passes")
 
+def test_mobile_grid_responsive():
+    """Test 90: Grid shows 1 column on screens below 768px"""
+    habits_path = Path(__file__).parent.parent / 'habits.html'
+    content = habits_path.read_text()
+    
+    # Check for mobile breakpoint
+    assert '@media (max-width: 768px)' in content, "Should have mobile breakpoint"
+    assert 'grid-template-columns: 1fr' in content, "Should use 1 column on mobile"
+    print("✓ Test 90: Grid is responsive for mobile (1 column)")
+
+def test_tablet_grid_responsive():
+    """Test 91: Grid shows 2 columns between 768px and 1200px"""
+    habits_path = Path(__file__).parent.parent / 'habits.html'
+    content = habits_path.read_text()
+    
+    # Check for tablet breakpoint
+    assert '@media (min-width: 769px) and (max-width: 1200px)' in content, "Should have tablet breakpoint"
+    assert 'repeat(2, 1fr)' in content, "Should use 2 columns on tablet"
+    print("✓ Test 91: Grid shows 2 columns on tablet screens")
+
+def test_touch_targets_44px():
+    """Test 92: All buttons and interactive elements have minimum 44px touch target"""
+    habits_path = Path(__file__).parent.parent / 'habits.html'
+    content = habits_path.read_text()
+    
+    # Check for minimum touch target sizes in mobile styles
+    assert 'min-width: 44px' in content, "Should have min-width 44px for touch targets"
+    assert 'min-height: 44px' in content, "Should have min-height 44px for touch targets"
+    assert 'min-height: 48px' in content, "Check-in button should have min-height 48px"
+    print("✓ Test 92: Touch targets meet 44px minimum on mobile")
+
+def test_modals_scrollable_mobile():
+    """Test 93: Modals are scrollable with max-height 90vh on small screens"""
+    habits_path = Path(__file__).parent.parent / 'habits.html'
+    content = habits_path.read_text()
+    
+    # Check modal has max-height and overflow
+    assert 'max-height: 90vh' in content, "Modal should have max-height 90vh"
+    assert 'overflow-y: auto' in content, "Modal should have overflow-y auto for scrolling"
+    print("✓ Test 93: Modals are scrollable on small screens")
+
+def test_pickers_wrap_mobile():
+    """Test 94: Icon and color pickers wrap properly on mobile"""
+    habits_path = Path(__file__).parent.parent / 'habits.html'
+    content = habits_path.read_text()
+    
+    # Check for mobile grid adjustments in @media query
+    mobile_section = content[content.find('@media (max-width: 768px)'):content.find('@media (max-width: 768px)') + 3000]
+    
+    assert 'grid-template-columns: repeat(4, 1fr)' in mobile_section, "Pickers should use 4 columns on mobile"
+    print("✓ Test 94: Icon and color pickers wrap properly on mobile")
+
+def test_filter_bar_stacks_mobile():
+    """Test 95: Filter bar stacks vertically on mobile"""
+    habits_path = Path(__file__).parent.parent / 'habits.html'
+    content = habits_path.read_text()
+    
+    # Check for filter bar mobile styles
+    mobile_section = content[content.find('@media (max-width: 768px)'):content.find('@media (max-width: 768px)') + 3000]
+    
+    assert '.filter-bar' in mobile_section, "Should have filter-bar mobile styles"
+    assert 'flex-direction: column' in mobile_section, "Filter bar should stack vertically"
+    print("✓ Test 95: Filter bar stacks vertically on mobile")
+
+def test_stats_2x2_mobile():
+    """Test 96: Stats row shows 2x2 grid on mobile"""
+    habits_path = Path(__file__).parent.parent / 'habits.html'
+    content = habits_path.read_text()
+    
+    # Check for stats row mobile layout
+    mobile_section = content[content.find('@media (max-width: 768px)'):content.find('@media (max-width: 768px)') + 3000]
+    
+    assert '.stats-row' in mobile_section, "Should have stats-row mobile styles"
+    assert 'grid-template-columns: repeat(2, 1fr)' in mobile_section, "Stats should use 2x2 grid on mobile"
+    print("✓ Test 96: Stats row shows 2x2 grid on mobile")
+
+def test_swipe_nav_integration():
+    """Test 97: swipe-nav.js is integrated for page navigation"""
+    habits_path = Path(__file__).parent.parent / 'habits.html'
+    content = habits_path.read_text()
+    
+    # Check swipe-nav.js is included
+    assert 'src="/echo/swipe-nav.js"' in content, "Should include swipe-nav.js"
+    
+    # Check swipe-nav.js has habits.html in pages array
+    swipe_nav_path = Path(__file__).parent.parent / 'swipe-nav.js'
+    if swipe_nav_path.exists():
+        swipe_content = swipe_nav_path.read_text()
+        assert 'habits.html' in swipe_content, "swipe-nav.js should include habits.html in pages array"
+    
+    print("✓ Test 97: swipe-nav.js is integrated")
+
+def test_mobile_form_inputs():
+    """Test 98: Form inputs are touch-friendly on mobile"""
+    habits_path = Path(__file__).parent.parent / 'habits.html'
+    content = habits_path.read_text()
+    
+    # Check for form input mobile styles
+    mobile_section = content[content.find('@media (max-width: 768px)'):content.find('@media (max-width: 768px)') + 3000]
+    
+    assert '.form-input' in mobile_section or 'min-height: 44px' in mobile_section, "Form inputs should have mobile styles"
+    print("✓ Test 98: Form inputs are touch-friendly on mobile")
+
+def test_mobile_no_console_errors():
+    """Test 99: No obvious console error sources in mobile-specific code"""
+    habits_path = Path(__file__).parent.parent / 'habits.html'
+    content = habits_path.read_text()
+    
+    # Basic sanity checks
+    assert '<style>' in content, "Should have style tags"
+    assert '@media' in content, "Should have media queries"
+    assert '</style>' in content, "Style tags should be closed"
+    print("✓ Test 99: No obvious console error sources")
+
+def test_typecheck_us014():
+    """Test 100: Typecheck passes after US-014 changes"""
+    api_path = Path(__file__).parent.parent / 'api.py'
+    result = os.system(f'python3 -m py_compile {api_path}')
+    assert result == 0, "api.py should pass typecheck"
+    print("✓ Test 100: Typecheck passes")
+
+def test_mobile_day_checkboxes_wrap():
+    """Test 101: Day checkboxes wrap properly on mobile"""
+    habits_path = Path(__file__).parent.parent / 'habits.html'
+    content = habits_path.read_text()
+    
+    # Check for day checkboxes mobile styles
+    mobile_section = content[content.find('@media (max-width: 768px)'):content.find('@media (max-width: 768px)') + 3000]
+    
+    assert '.day-checkboxes' in mobile_section, "Should have day-checkboxes mobile styles"
+    print("✓ Test 101: Day checkboxes wrap properly on mobile")
+
 def run_all_tests():
     """Run all tests in sequence"""
     tests = [
@@ -1566,9 +1699,22 @@ def run_all_tests():
         test_stats_css_styling,
         test_stats_no_console_errors,
         test_typecheck_us013,
+        # US-014 tests
+        test_mobile_grid_responsive,
+        test_tablet_grid_responsive,
+        test_touch_targets_44px,
+        test_modals_scrollable_mobile,
+        test_pickers_wrap_mobile,
+        test_filter_bar_stacks_mobile,
+        test_stats_2x2_mobile,
+        test_swipe_nav_integration,
+        test_mobile_form_inputs,
+        test_mobile_no_console_errors,
+        test_typecheck_us014,
+        test_mobile_day_checkboxes_wrap,
     ]
     
-    print(f"\nRunning {len(tests)} frontend tests for US-006 through US-013...\n")
+    print(f"\nRunning {len(tests)} frontend tests for US-006 through US-014...\n")
     
     failed = []
     for test in tests: