Added file upload support for GPX files

src/App.vue

@@ -11,8 +11,8 @@
         <MapView />
       </div>
       
-      <div class="text-center py-8 text-gray-500">
-        <p>Upload GPX files to see your tracks on the map</p>
+      <div class="mb-6">
+        <FileUpload @files-uploaded="handleFilesUploaded" />
       </div>
     </main>
   </div>
@@ -20,11 +20,19 @@
 
 <script>
 import MapView from './components/MapView.vue'
+import FileUpload from './components/FileUpload.vue'
 
 export default {
   name: 'App',
   components: {
-    MapView
+    MapView,
+    FileUpload
+  },
+  methods: {
+    handleFilesUploaded(files) {
+      console.log('Files uploaded:', files)
+      // TODO: Parse GPX files and display on map
+    }
   }
 }
 </script>

src/components/FileUpload.vue

@@ -0,0 +1,91 @@
+<template>
+  <div class="border-2 border-dashed border-gray-300 rounded-lg p-8 text-center hover:border-blue-400 transition-colors">
+    <div 
+      @drop.prevent="handleDrop"
+      @dragover.prevent
+      @dragenter.prevent
+      class="cursor-pointer"
+      @click="$refs.fileInput.click()"
+    >
+      <div class="mb-4">
+        <svg class="mx-auto h-12 w-12 text-gray-400" fill="none" viewBox="0 0 24 24" stroke="currentColor">
+          <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M7 16a4 4 0 01-.88-7.903A5 5 0 1115.9 6L16 6a5 5 0 011 9.9M15 13l-3-3m0 0l-3 3m3-3v12" />
+        </svg>
+      </div>
+      <div class="text-lg font-medium text-gray-900 mb-2">
+        Drop GPX files here or click to browse
+      </div>
+      <div class="text-sm text-gray-500">
+        Upload your cycling tracks to visualize them on the map
+      </div>
+    </div>
+    
+    <input
+      ref="fileInput"
+      type="file"
+      multiple
+      accept=".gpx"
+      class="hidden"
+      @change="handleFileSelect"
+    />
+    
+    <!-- File list -->
+    <div v-if="uploadedFiles.length > 0" class="mt-6 text-left">
+      <h3 class="font-medium text-gray-900 mb-3">Uploaded Files:</h3>
+      <div class="space-y-2">
+        <div 
+          v-for="file in uploadedFiles" 
+          :key="file.name"
+          class="flex items-center justify-between p-3 bg-gray-50 rounded-lg"
+        >
+          <div class="flex items-center">
+            <svg class="h-5 w-5 text-green-500 mr-2" fill="none" viewBox="0 0 24 24" stroke="currentColor">
+              <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z" />
+            </svg>
+            <span class="text-sm font-medium">{{ file.name }}</span>
+          </div>
+          <div class="text-xs text-gray-500">
+            {{ (file.size / 1024).toFixed(1) }} KB
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script>
+import { ref } from 'vue'
+
+export default {
+  name: 'FileUpload',
+  emits: ['files-uploaded'],
+  setup(props, { emit }) {
+    const uploadedFiles = ref([])
+
+    const handleDrop = (event) => {
+      const files = Array.from(event.dataTransfer.files).filter(file => 
+        file.name.toLowerCase().endsWith('.gpx')
+      )
+      processFiles(files)
+    }
+
+    const handleFileSelect = (event) => {
+      const files = Array.from(event.target.files)
+      processFiles(files)
+    }
+
+    const processFiles = (files) => {
+      if (files.length === 0) return
+
+      uploadedFiles.value = [...uploadedFiles.value, ...files]
+      emit('files-uploaded', files)
+    }
+
+    return {
+      uploadedFiles,
+      handleDrop,
+      handleFileSelect
+    }
+  }
+}
+</script>