diff --git a/templates/login.html b/templates/login.html
new file mode 100644
index 0000000..b0b1acb
--- /dev/null
+++ b/templates/login.html
@@ -0,0 +1,171 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Sign In - CloudDriveLite</title>
+    <style>
+        * { 
+            margin: 0; 
+            padding: 0; 
+            box-sizing: border-box; 
+        }
+        
+        body {
+            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
+            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+            min-height: 100vh;
+            display: flex;
+            align-items: center;
+            justify-content: center;
+            padding: 20px;
+        }
+        
+        .login-container {
+            background: white;
+            padding: 40px;
+            border-radius: 10px;
+            box-shadow: 0 10px 40px rgba(0,0,0,0.2);
+            width: 100%;
+            max-width: 400px;
+            animation: slideIn 0.3s ease-out;
+        }
+        
+        @keyframes slideIn {
+            from {
+                opacity: 0;
+                transform: translateY(-20px);
+            }
+            to {
+                opacity: 1;
+                transform: translateY(0);
+            }
+        }
+        
+        .logo {
+            text-align: center;
+            margin-bottom: 10px;
+            font-size: 48px;
+        }
+        
+        h1 {
+            text-align: center;
+            margin-bottom: 30px;
+            color: #333;
+            font-size: 28px;
+        }
+        
+        .form-group {
+            margin-bottom: 20px;
+        }
+        
+        label {
+            display: block;
+            margin-bottom: 5px;
+            color: #555;
+            font-weight: 500;
+            font-size: 14px;
+        }
+        
+        input {
+            width: 100%;
+            padding: 12px 16px;
+            border: 2px solid #e0e0e0;
+            border-radius: 5px;
+            font-size: 14px;
+            transition: all 0.3s;
+        }
+        
+        input:focus {
+            outline: none;
+            border-color: #667eea;
+            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
+        }
+        
+        button {
+            width: 100%;
+            padding: 12px;
+            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+            color: white;
+            border: none;
+            border-radius: 5px;
+            font-size: 16px;
+            font-weight: 600;
+            cursor: pointer;
+            transition: all 0.3s;
+        }
+        
+        button:hover {
+            transform: translateY(-2px);
+            box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
+        }
+        
+        button:active {
+            transform: translateY(0);
+        }
+        
+        .error {
+            background: #fee;
+            color: #c33;
+            padding: 12px;
+            border-radius: 5px;
+            margin-bottom: 20px;
+            text-align: center;
+            font-size: 14px;
+            border: 1px solid #fcc;
+            animation: shake 0.5s;
+        }
+        
+        @keyframes shake {
+            0%, 100% { transform: translateX(0); }
+            25% { transform: translateX(-10px); }
+            75% { transform: translateX(10px); }
+        }
+        
+        .footer {
+            margin-top: 20px;
+            text-align: center;
+            font-size: 12px;
+            color: #999;
+        }
+    </style>
+</head>
+<body>
+    <div class="login-container">
+        <div class="logo">☁️</div>
+        <h1>CloudDriveLite</h1>
+        {{if .Error}}
+        <div class="error">
+            Invalid username or password
+        </div>
+        {{end}}
+        <form method="POST" action="/login">
+            <div class="form-group">
+                <label for="username">Username</label>
+                <input 
+                    type="text" 
+                    id="username" 
+                    name="username" 
+                    required 
+                    autofocus
+                    autocomplete="username"
+                >
+            </div>
+            <div class="form-group">
+                <label for="password">Password</label>
+                <input 
+                    type="password" 
+                    id="password" 
+                    name="password" 
+                    required
+                    autocomplete="current-password"
+                >
+            </div>
+            <button type="submit">Sign In</button>
+        </form>
+        <div class="footer">
+            CloudDriveLite © 2024
+        </div>
+    </div>
+</body>
+</html>
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