feat: add user and admin page

frontend/assets/css/style.css

@@ -0,0 +1,61 @@
+* {
+  box-sizing: border-box;
+  margin: 0;
+  padding: 0;
+}
+
+body {
+  font-family: Tahoma, sans-serif;
+  background: #f5f5f5;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  padding: 40px 20px;
+  gap: 20px;
+}
+
+h1 {
+  color: #2c3e50;
+  margin-bottom: 10px;
+}
+
+canvas {
+  border-radius: 50%;
+  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
+}
+
+button {
+  padding: 12px 30px;
+  font-size: 18px;
+  font-family: Tahoma, sans-serif;
+  background: #e74c3c;
+  color: white;
+  border: none;
+  border-radius: 8px;
+  cursor: pointer;
+}
+
+button:hover {
+  background: #c0392b;
+}
+
+button:disabled {
+  background: #aaa;
+  cursor: not-allowed;
+}
+
+#result {
+  font-size: 24px;
+  font-weight: bold;
+  color: #2c3e50;
+}
+
+/* ادمین */
+#add-section {
+  display: flex;
+  gap: 10px;
+  margin-bottom: 20px;
+}
+
+input {
+  padding: 10px;