修复selectDuration函数，确保套餐默认服务时间正确显示

pending_bookings.php

@@ -850,19 +850,18 @@ try {
                 customDurationInput.value = minutes;
             }
             
-            // 更新按钮选中状态
-            document.querySelectorAll(`[onclick="selectDuration(${submissionId}, ${minutes})"]`).forEach(btn => {
-                btn.classList.add('selected');
-            });
+            // 获取当前表单的所有时长按钮
+            const form = document.getElementById('selected_package_' + submissionId).closest('form');
+            const durationButtons = form.querySelectorAll('.duration-btn');
             
-            // 移除其他按钮的选中状态
-            document.querySelectorAll(`#selected_package_${submissionId}`).forEach(packageSelect => {
-                const formGroup = packageSelect.closest('form').querySelector('.form-group');
-                formGroup.querySelectorAll('.duration-btn').forEach(btn => {
-                    if (!btn.onclick || !btn.onclick.toString().includes(`selectDuration(${submissionId}, ${minutes})`)) {
-                        btn.classList.remove('selected');
-                    }
-                });
+            // 更新按钮选中状态
+            durationButtons.forEach(btn => {
+                // 检查按钮的onclick属性是否包含当前的分钟数
+                if (btn.onclick && btn.onclick.toString().includes(`selectDuration(${submissionId}, ${minutes})`)) {
+                    btn.classList.add('selected');
+                } else {
+                    btn.classList.remove('selected');
+                }
             });
         }