diff --git a/src/App.css b/src/App.css
index 8a877a1..f2fd9d0 100644
--- a/src/App.css
+++ b/src/App.css
@@ -106,3 +106,55 @@
 .retry-button:hover {
   background-color: #6d28d9;
 }
+
+.nav-tabs {
+  display: flex;
+  gap: 0.5rem;
+  max-width: 1400px;
+  margin: 0 auto 2rem;
+  border-bottom: 2px solid #374151;
+}
+
+.nav-tab {
+  background: none;
+  border: none;
+  color: #9ca3af;
+  padding: 1rem 1.5rem;
+  font-family: "JetBrains Mono", monospace;
+  font-size: 0.875rem;
+  font-weight: 600;
+  cursor: pointer;
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  transition: all 0.2s;
+  border-bottom: 2px solid transparent;
+  margin-bottom: -2px;
+}
+
+.nav-tab:hover {
+  color: #d8b4fe;
+  background-color: rgba(124, 58, 237, 0.1);
+}
+
+.nav-tab.active {
+  color: #a78bfa;
+  border-bottom-color: #7c3aed;
+}
+
+.page-content {
+  max-width: 1400px;
+  margin: 0 auto;
+}
+
+@media (max-width: 768px) {
+  .nav-tabs {
+    overflow-x: auto;
+  }
+
+  .nav-tab {
+    padding: 0.75rem 1rem;
+    font-size: 0.75rem;
+    white-space: nowrap;
+  }
+}
\ No newline at end of file
diff --git a/src/App.jsx b/src/App.jsx
index 70fadf8..4ffeda2 100644
--- a/src/App.jsx
+++ b/src/App.jsx
@@ -1,6 +1,8 @@
 import { useState, useEffect } from 'react';
-import { AlertCircle } from 'lucide-react';
+import { AlertCircle, BarChart3, FileText, TableIcon } from 'lucide-react';
 import { GradesTable } from './components/GradesTable';
+import { AssignmentLogs } from './components/AssignmentLogs';
+import { Metrics } from './components/Metrics';
 import { LoadingSpinner } from './components/LoadingSpinner';
 import { AuthPage } from './components/AuthPage';
 import { useAuth } from './contexts/AuthContext';
@@ -12,6 +14,7 @@ function App() {
   const [data, setData] = useState(null);
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState(null);
+  const [currentPage, setCurrentPage] = useState('grades');
 
   useEffect(() => {
     if (user) {
@@ -44,12 +47,12 @@ function App() {
   }
 
   // Show loading spinner while fetching grades
-  if (loading) {
+  if (loading && currentPage === 'grades') {
     return <LoadingSpinner />;
   }
 
   // Show error state
-  if (error) {
+  if (error && currentPage === 'grades') {
     return (
       <div className="error-container">
         <div className="error-content">
@@ -73,16 +76,46 @@ function App() {
           </p>
         </div>
         <div style={{ display: 'flex', gap: '0.5rem' }}>
-          <button onClick={fetchGrades} className="refresh-button">
-            Refresh
-          </button>
+          {currentPage === 'grades' && (
+            <button onClick={fetchGrades} className="refresh-button">
+              Refresh
+            </button>
+          )}
           <button onClick={logout} className="refresh-button" style={{ background: '#dc2626' }}>
             Logout
           </button>
         </div>
       </div>
-      
-      <GradesTable data={data} />
+
+      <nav className="nav-tabs">
+        <button 
+          className={`nav-tab ${currentPage === 'grades' ? 'active' : ''}`}
+          onClick={() => setCurrentPage('grades')}
+        >
+          <TableIcon size={18} />
+          <span>Grades</span>
+        </button>
+        <button 
+          className={`nav-tab ${currentPage === 'logs' ? 'active' : ''}`}
+          onClick={() => setCurrentPage('logs')}
+        >
+          <FileText size={18} />
+          <span>Assignment Logs</span>
+        </button>
+        <button 
+          className={`nav-tab ${currentPage === 'metrics' ? 'active' : ''}`}
+          onClick={() => setCurrentPage('metrics')}
+        >
+          <BarChart3 size={18} />
+          <span>Metrics</span>
+        </button>
+      </nav>
+
+      <div className="page-content">
+        {currentPage === 'grades' && <GradesTable data={data} />}
+        {currentPage === 'logs' && <AssignmentLogs />}
+        {currentPage === 'metrics' && <Metrics />}
+      </div>
     </div>
   );
 }
diff --git a/src/components/AssignmentLogs.css b/src/components/AssignmentLogs.css
new file mode 100644
index 0000000..b797b66
--- /dev/null
+++ b/src/components/AssignmentLogs.css
@@ -0,0 +1,261 @@
+.logs-container {
+  max-width: 1200px;
+  margin: 0 auto;
+}
+
+.logs-header {
+  margin-bottom: 2rem;
+}
+
+.logs-header h2 {
+  font-size: 2rem;
+  font-weight: 700;
+  background: linear-gradient(to right, #a78bfa, #ec4899);
+  -webkit-background-clip: text;
+  -webkit-text-fill-color: transparent;
+  background-clip: text;
+  margin-bottom: 0.5rem;
+}
+
+.logs-subtitle {
+  color: #9ca3af;
+  font-size: 0.875rem;
+}
+
+.logs-loading,
+.logs-error,
+.logs-empty {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  padding: 4rem 2rem;
+  color: #9ca3af;
+  gap: 1rem;
+}
+
+.spinner {
+  width: 48px;
+  height: 48px;
+  border: 4px solid #374151;
+  border-top-color: #a78bfa;
+  border-radius: 50%;
+  animation: spin 1s linear infinite;
+}
+
+@keyframes spin {
+  to { transform: rotate(360deg); }
+}
+
+.retry-btn {
+  background-color: #7c3aed;
+  color: white;
+  padding: 0.5rem 1.5rem;
+  border: none;
+  border-radius: 0.375rem;
+  font-family: "JetBrains Mono", monospace;
+  cursor: pointer;
+  transition: background-color 0.2s;
+}
+
+.retry-btn:hover {
+  background-color: #6d28d9;
+}
+
+.logs-list {
+  display: flex;
+  flex-direction: column;
+  gap: 1rem;
+}
+
+.log-card {
+  background-color: #2b2b2b;
+  border: 1px solid #374151;
+  border-radius: 0.5rem;
+  padding: 1.25rem;
+  transition: all 0.2s;
+}
+
+.log-card:hover {
+  border-color: #7c3aed;
+  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.2);
+}
+
+.log-main {
+  display: flex;
+  justify-content: space-between;
+  align-items: start;
+  gap: 1rem;
+  margin-bottom: 0.75rem;
+}
+
+.log-info {
+  flex: 1;
+}
+
+.log-class {
+  color: #d8b4fe;
+  font-weight: 600;
+  font-size: 1.125rem;
+  margin-bottom: 0.25rem;
+}
+
+.log-assignment {
+  color: #e0e0e0;
+  font-size: 0.875rem;
+  margin-bottom: 0.5rem;
+}
+
+.log-meta {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  font-size: 0.75rem;
+  color: #9ca3af;
+}
+
+.log-category {
+  background-color: rgba(124, 58, 237, 0.2);
+  color: #c4b5fd;
+  padding: 0.125rem 0.5rem;
+  border-radius: 0.25rem;
+}
+
+.log-separator {
+  color: #4b5563;
+}
+
+.log-period {
+  color: #9ca3af;
+}
+
+.log-grade-info {
+  display: flex;
+  flex-direction: column;
+  align-items: flex-end;
+  gap: 0.5rem;
+}
+
+.log-grade {
+  font-size: 2rem;
+  font-weight: 700;
+  color: #4ade80;
+}
+
+.log-change {
+  display: flex;
+  align-items: center;
+  gap: 0.25rem;
+  padding: 0.25rem 0.5rem;
+  border-radius: 0.25rem;
+  font-size: 0.875rem;
+  font-weight: 600;
+}
+
+.change-positive {
+  background-color: rgba(74, 222, 128, 0.1);
+  color: #4ade80;
+}
+
+.change-negative {
+  background-color: rgba(248, 113, 113, 0.1);
+  color: #f87171;
+}
+
+.change-none {
+  background-color: rgba(156, 163, 175, 0.1);
+  color: #9ca3af;
+}
+
+.log-footer {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  padding-top: 0.75rem;
+  border-top: 1px solid #374151;
+  color: #6b7280;
+  font-size: 0.75rem;
+}
+
+.log-timestamp {
+  color: #9ca3af;
+}
+
+.log-due-date {
+  color: #fbbf24;
+  font-weight: 500;
+}
+
+@media (max-width: 768px) {
+  .log-main {
+    flex-direction: column;
+  }
+
+  .log-grade-info {
+    align-items: flex-start;
+    flex-direction: row;
+    gap: 1rem;
+  }
+
+  .log-grade {
+    font-size: 1.5rem;
+  }
+}
+
+.logs-header {
+  margin-bottom: 2rem;
+  display: flex;
+  justify-content: space-between;
+  align-items: start;
+  gap: 2rem;
+}
+
+.sort-controls {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  color: #9ca3af;
+}
+
+.sort-dropdown {
+  background-color: #2b2b2b;
+  border: 1px solid #374151;
+  color: #e0e0e0;
+  padding: 0.5rem 1rem;
+  border-radius: 0.375rem;
+  font-family: "JetBrains Mono", monospace;
+  font-size: 0.875rem;
+  cursor: pointer;
+  transition: all 0.2s;
+}
+
+.sort-dropdown:hover {
+  border-color: #7c3aed;
+}
+
+.sort-dropdown:focus {
+  outline: none;
+  border-color: #7c3aed;
+  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
+}
+
+.log-due-date {
+  color: #fbbf24;
+  font-weight: 500;
+}
+
+@media (max-width: 768px) {
+  .logs-header {
+    flex-direction: column;
+    gap: 1rem;
+  }
+  
+  .sort-controls {
+    width: 100%;
+  }
+  
+  .sort-dropdown {
+    flex: 1;
+    width: 100%;
+  }
+}
\ No newline at end of file
diff --git a/src/components/AssignmentLogs.jsx b/src/components/AssignmentLogs.jsx
new file mode 100644
index 0000000..abe4ef3
--- /dev/null
+++ b/src/components/AssignmentLogs.jsx
@@ -0,0 +1,260 @@
+import { useState, useEffect } from 'react';
+import { Clock, TrendingUp, TrendingDown, Minus, ArrowUpDown } from 'lucide-react';
+import { api } from '../services/api';
+import { useAuth } from '../contexts/AuthContext';
+import './AssignmentLogs.css';
+
+export const AssignmentLogs = () => {
+  const { user } = useAuth();
+  const [logs, setLogs] = useState([]);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState(null);
+  const [sortBy, setSortBy] = useState('due-newest');
+
+  useEffect(() => {
+    fetchLogs();
+  // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+
+  const fetchLogs = async () => {
+    setLoading(true);
+    setError(null);
+    try {
+      const result = await api.getGrades(user.username);
+      
+      // Transform classes into logs
+      const allLogs = [];
+      result.user.classes.forEach(cls => {
+        cls.assignments.forEach(assignment => {
+          allLogs.push({
+            className: cls.className,
+            assignmentName: assignment.name,
+            category: cls.category,
+            period: cls.period,
+            newGrade: assignment.score,
+            gradeChange: 0,
+            timestamp: assignment.createdAt,
+            dueDate: assignment.dueDate,
+            classId: cls.id,
+          });
+        });
+      });
+      
+      setLogs(allLogs);
+    } catch (err) {
+      setError(err.message);
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const sortLogs = (logsToSort, sortType) => {
+    const sorted = [...logsToSort];
+    
+    switch(sortType) {
+      case 'due-newest':
+        sorted.sort((a, b) => new Date(b.dueDate) - new Date(a.dueDate));
+        break;
+        
+      case 'due-oldest':
+        sorted.sort((a, b) => new Date(a.dueDate) - new Date(b.dueDate));
+        break;
+        
+      case 'time-newest':
+        sorted.sort((a, b) => {
+          const timeDiff = new Date(b.timestamp) - new Date(a.timestamp);
+          // Tie-break with due date
+          if (timeDiff === 0) {
+            return new Date(b.dueDate) - new Date(a.dueDate);
+          }
+          return timeDiff;
+        });
+        break;
+        
+      case 'time-oldest':
+        sorted.sort((a, b) => {
+          const timeDiff = new Date(a.timestamp) - new Date(b.timestamp);
+          // Tie-break with due date
+          if (timeDiff === 0) {
+            return new Date(a.dueDate) - new Date(b.dueDate);
+          }
+          return timeDiff;
+        });
+        break;
+        
+      case 'class-az':
+        sorted.sort((a, b) => {
+          const classCompare = a.className.localeCompare(b.className);
+          // Within same class, sort assignments A-Z
+          if (classCompare === 0) {
+            return a.assignmentName.localeCompare(b.assignmentName);
+          }
+          return classCompare;
+        });
+        break;
+        
+      case 'class-za':
+        sorted.sort((a, b) => {
+          const classCompare = b.className.localeCompare(a.className);
+          // Within same class, sort assignments Z-A
+          if (classCompare === 0) {
+            return b.assignmentName.localeCompare(a.assignmentName);
+          }
+          return classCompare;
+        });
+        break;
+        
+      case 'assignment-az':
+        sorted.sort((a, b) => a.assignmentName.localeCompare(b.assignmentName));
+        break;
+        
+      case 'assignment-za':
+        sorted.sort((a, b) => b.assignmentName.localeCompare(a.assignmentName));
+        break;
+        
+      default:
+        break;
+    }
+    
+    return sorted;
+  };
+
+  const calculateGradeChanges = (sortedLogs) => {
+    return sortedLogs.map((log, index) => {
+      // Look for an older version of the same assignment
+      const olderVersion = sortedLogs.slice(index + 1).find(
+        oldLog => 
+          oldLog.assignmentName === log.assignmentName && 
+          oldLog.className === log.className &&
+          oldLog.category === log.category
+      );
+      
+      if (olderVersion) {
+        // Parse scores (remove % if present)
+        const newScore = parseFloat(log.newGrade.toString().replace('%', ''));
+        const oldScore = parseFloat(olderVersion.newGrade.toString().replace('%', ''));
+        return { ...log, gradeChange: newScore - oldScore };
+      }
+      
+      return log;
+    });
+  };
+
+  const formatDate = (timestamp) => {
+    const date = new Date(timestamp);
+    return date.toLocaleString('en-US', {
+      month: 'short',
+      day: 'numeric',
+      year: 'numeric',
+      hour: 'numeric',
+      minute: '2-digit',
+      hour12: true
+    });
+  };
+
+  const getChangeIcon = (change) => {
+    if (!change) return <Minus size={16} />;
+    if (change > 0) return <TrendingUp size={16} />;
+    return <TrendingDown size={16} />;
+  };
+
+  const getChangeClass = (change) => {
+    if (!change) return 'change-none';
+    if (change > 0) return 'change-positive';
+    return 'change-negative';
+  };
+
+  if (loading) {
+    return (
+      <div className="logs-loading">
+        <div className="spinner"></div>
+        <p>Loading assignment logs...</p>
+      </div>
+    );
+  }
+
+  if (error) {
+    return (
+      <div className="logs-error">
+        <p>Error loading logs: {error}</p>
+        <button onClick={fetchLogs} className="retry-btn">Retry</button>
+      </div>
+    );
+  }
+
+  const sortedLogs = sortLogs(logs, sortBy);
+  const processedLogs = calculateGradeChanges(sortedLogs);
+
+  return (
+    <div className="logs-container">
+      <div className="logs-header">
+        <div>
+          <h2>Assignment Logs</h2>
+          <p className="logs-subtitle">Track all grade updates and changes</p>
+        </div>
+        
+        <div className="sort-controls">
+          <ArrowUpDown size={18} />
+          <select 
+            value={sortBy} 
+            onChange={(e) => setSortBy(e.target.value)}
+            className="sort-dropdown"
+          >
+            <option value="due-newest">Due Date (Newest First)</option>
+            <option value="due-oldest">Due Date (Oldest First)</option>
+            <option value="time-newest">Time Added (Newest First)</option>
+            <option value="time-oldest">Time Added (Oldest First)</option>
+            <option value="class-az">Class Name (A-Z)</option>
+            <option value="class-za">Class Name (Z-A)</option>
+            <option value="assignment-az">Assignment Name (A-Z)</option>
+            <option value="assignment-za">Assignment Name (Z-A)</option>
+          </select>
+        </div>
+      </div>
+
+      {processedLogs.length === 0 ? (
+        <div className="logs-empty">
+          <Clock size={48} />
+          <p>No assignment logs found</p>
+        </div>
+      ) : (
+        <div className="logs-list">
+          {processedLogs.map((log, idx) => (
+            <div key={idx} className="log-card">
+              <div className="log-main">
+                <div className="log-info">
+                  <div className="log-class">{log.className}</div>
+                  <div className="log-assignment">{log.assignmentName}</div>
+                  <div className="log-meta">
+                    <span className="log-category">{log.category}</span>
+                    <span className="log-separator">•</span>
+                    <span className="log-period">{log.period}</span>
+                    {log.dueDate && (
+                      <>
+                        <span className="log-separator">•</span>
+                        <span className="log-due-date">Due: {log.dueDate}</span>
+                      </>
+                    )}
+                  </div>
+                </div>
+                <div className="log-grade-info">
+                  <div className="log-grade">{log.newGrade}</div>
+                  {log.gradeChange !== 0 && (
+                    <div className={`log-change ${getChangeClass(log.gradeChange)}`}>
+                      {getChangeIcon(log.gradeChange)}
+                      <span>{Math.abs(log.gradeChange).toFixed(2)}</span>
+                    </div>
+                  )}
+                </div>
+              </div>
+              <div className="log-footer">
+                <Clock size={14} />
+                <span className="log-timestamp">{formatDate(log.timestamp)}</span>
+              </div>
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+};
\ No newline at end of file
diff --git a/src/components/ClassDetail.jsx b/src/components/ClassDetail.jsx
index 2f83a57..90027ff 100644
--- a/src/components/ClassDetail.jsx
+++ b/src/components/ClassDetail.jsx
@@ -52,22 +52,7 @@ export const ClassDetail = ({ classData, onClose }) => {
               </div>
             </div>
           </div>
-          
-          {/* Action buttons */}
-          <div className="action-buttons">
-            <button className="action-btn">
-              <Calculator size={16} />
-              Calculations
-            </button>
-            <button className="action-btn">
-              <Scale size={16} />
-              Grading Scale
-            </button>
-            <button className="action-btn">
-              <Printer size={16} />
-              Print
-            </button>
-          </div>
+
         </div>
 
         {/* Assignments Table */}
diff --git a/src/components/Metrics.css b/src/components/Metrics.css
new file mode 100644
index 0000000..b42e267
--- /dev/null
+++ b/src/components/Metrics.css
@@ -0,0 +1,41 @@
+.metrics-container {
+  max-width: 1200px;
+  margin: 0 auto;
+}
+
+.metrics-header {
+  margin-bottom: 2rem;
+}
+
+.metrics-header h2 {
+  font-size: 2rem;
+  font-weight: 700;
+  background: linear-gradient(to right, #a78bfa, #ec4899);
+  -webkit-background-clip: text;
+  -webkit-text-fill-color: transparent;
+  background-clip: text;
+  margin-bottom: 0.5rem;
+}
+
+.metrics-subtitle {
+  color: #9ca3af;
+  font-size: 0.875rem;
+}
+
+.metrics-placeholder {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  padding: 6rem 2rem;
+  background-color: #2b2b2b;
+  border: 2px dashed #374151;
+  border-radius: 0.5rem;
+  color: #9ca3af;
+  gap: 1rem;
+}
+
+.placeholder-icon {
+  font-size: 4rem;
+  opacity: 0.5;
+}
\ No newline at end of file
diff --git a/src/components/Metrics.jsx b/src/components/Metrics.jsx
new file mode 100644
index 0000000..f517398
--- /dev/null
+++ b/src/components/Metrics.jsx
@@ -0,0 +1,17 @@
+import './Metrics.css';
+
+export const Metrics = () => {
+  return (
+    <div className="metrics-container">
+      <div className="metrics-header">
+        <h2>Metrics</h2>
+        <p className="metrics-subtitle">Coming soon...</p>
+      </div>
+      
+      <div className="metrics-placeholder">
+        <div className="placeholder-icon">📊</div>
+        <p>Grade analytics and insights will appear here</p>
+      </div>
+    </div>
+  );
+};
\ No newline at end of file
diff --git a/src/index.css b/src/index.css
index c3030a2..afb9acb 100644
--- a/src/index.css
+++ b/src/index.css
@@ -1,4 +1,4 @@
-@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&display=swap');
+@import url("https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&display=swap");
 
 * {
   margin: 0;
@@ -7,7 +7,7 @@
 }
 
 body {
-  font-family: 'JetBrains Mono', monospace;
+  font-family: "JetBrains Mono", monospace;
   background-color: #1e1e1e;
   color: #e0e0e0;
   line-height: 1.6;
@@ -16,7 +16,7 @@ body {
 }
 
 #root {
-  min-height: 10a0vh;
+  min-height: 100vh;
 }
 
 /* Custom scrollbar */
@@ -36,4 +36,128 @@ body {
 
 ::-webkit-scrollbar-thumb:hover {
   background: #5a5a5a;
-}
\ No newline at end of file
+}
+
+/* Mobile Responsiveness */
+@media (max-width: 768px) {
+  .app-container {
+    padding: 1rem;
+  }
+
+  .app-header {
+    flex-direction: column;
+    gap: 1rem;
+    text-align: center;
+  }
+
+  .app-title {
+    font-size: 1.75rem;
+  }
+
+  .grades-table-container {
+    overflow-x: auto;
+  }
+
+  .grades-table {
+    font-size: 0.75rem;
+  }
+
+  .grades-table th,
+  .grades-table td {
+    padding: 0.5rem;
+  }
+
+  .header-class {
+    min-width: 120px;
+  }
+
+  .header-category {
+    min-width: 60px;
+  }
+
+  .class-name {
+    font-size: 0.875rem;
+  }
+
+  .class-period,
+  .class-teacher {
+    font-size: 0.65rem;
+  }
+
+  .grade-btn {
+    font-size: 0.875rem;
+    padding: 0.25rem 0.5rem;
+  }
+
+  .modal-content {
+    max-width: 95vw;
+    max-height: 95vh;
+  }
+
+  .modal-header {
+    padding: 1rem;
+  }
+
+  .class-name {
+    font-size: 1.5rem;
+  }
+
+  .final-grade {
+    font-size: 2.5rem;
+  }
+
+  .action-buttons {
+    flex-direction: column;
+  }
+
+  .action-btn {
+    width: 100%;
+    justify-content: center;
+  }
+
+  .assignments-table {
+    font-size: 0.75rem;
+  }
+
+  .assignments-table th,
+  .assignments-table td {
+    padding: 0.5rem;
+  }
+
+  .auth-card {
+    padding: 2rem 1.5rem;
+  }
+
+  .auth-title {
+    font-size: 1.5rem;
+  }
+}
+
+@media (max-width: 480px) {
+  .app-title {
+    font-size: 1.5rem;
+  }
+
+  .grades-table {
+    font-size: 0.7rem;
+  }
+
+  .header-category {
+    min-width: 50px;
+  }
+
+  .grade-btn {
+    font-size: 0.75rem;
+    padding: 0.25rem;
+  }
+
+  .final-grade {
+    font-size: 2rem;
+  }
+
+  .class-info {
+    flex-direction: column;
+    align-items: flex-start;
+    gap: 0.5rem;
+  }
+}