guter zwischenstand

firmware/libs/ble_mgmt/Kconfig

@@ -8,6 +8,12 @@ menuconfig BLE_MGMT
       Library for initializing and managing Bluetooth functionality.
 
 if BLE_MGMT
+    config BLE_MGMT_TX_QUEUE_DEPTH
+        int "BLE TX queue depth"
+        default 32
+        help
+          Number of notification payloads that can be queued in the BLE transport.
+
     config BLE_MGMT_DEFAULT_DEVICE_NAME
         string "Default Bluetooth Device Name"
         default "Edis Buzzer"
@@ -22,7 +28,6 @@ if BLE_MGMT
             help
                Maximal advertising interval. 160 equals to 100ms.
 
-# 1. MTU und Data Length (Maximale Paketgrößen)
     config BT_L2CAP_TX_MTU
         default 247
     config BT_BUF_ACL_RX_SIZE
@@ -33,14 +38,12 @@ if BLE_MGMT
         default 251
     config BT_USER_DATA_LEN_UPDATE
         default y
-
-    # 2. Physical Layer (Erlaubt 2M PHY)
     config BT_USER_PHY_UPDATE
         default y
-
-    # 3. Flow-Control und Queues (High Throughput, Host + SDC Controller synchronisiert)
     config BT_HCI_ACL_FLOW_CONTROL
         default y
+    config BT_BUF_CMD_TX_COUNT
+        default 24
     config BT_BUF_EVT_RX_COUNT
         default 22
     config BT_BUF_ACL_TX_COUNT
@@ -49,12 +52,12 @@ if BLE_MGMT
         default 20
     config BT_CONN_TX_MAX
         default 20
-
-    # 4. SDC Controller Buffering (an Host-Tiefen angeglichen)
     config BT_CTLR_SDC_TX_PACKET_COUNT
         default 20
     config BT_CTLR_SDC_RX_PACKET_COUNT
         default 20
+    config BT_MAX_CONN
+        default 2
         
     module = BLE_MGMT
     module-str = ble_mgmt

firmware/libs/buzz_proto/src/buzz_proto.c

@@ -74,7 +74,7 @@ void buzz_proto_buf_free(uint8_t **buf)
 {
     if (buf && *buf)
     {
-        k_mem_slab_free(&buzz_proto_slabs, (void **)*buf);
+        k_mem_slab_free(&buzz_proto_slabs, *buf);
         *buf = NULL;
     }
 }
@@ -84,6 +84,8 @@ int buzz_proto_submit_frame(struct buzz_frame_msg *msg)
     return k_msgq_put(&buzz_proto_msgq, msg, K_NO_WAIT);
 }
 
+static void send_stream_error(buzz_transport_reply_fn reply_cb, uint16_t error_code);
+
 static void send_error_frame(struct buzz_frame_msg *msg, uint16_t error_code)
 {
     struct buzz_proto_header *hdr = (struct buzz_proto_header *)msg->data_ptr;
@@ -99,6 +101,18 @@ static void send_error_frame(struct buzz_frame_msg *msg, uint16_t error_code)
     }
 }
 
+static void send_stream_error(buzz_transport_reply_fn reply_cb, uint16_t error_code)
+{
+    uint8_t *buf = NULL;
+    if (reply_cb == NULL || buzz_proto_buf_alloc(&buf) != 0)
+    {
+        return;
+    }
+    struct buzz_frame_msg err_msg = {.data_ptr = buf, .reply_cb = reply_cb};
+    send_error_frame(&err_msg, error_code);
+    buzz_proto_buf_free(&buf);
+}
+
 static void handle_proto_version_request(struct buzz_frame_msg *msg)
 {
     struct buzz_proto_header *hdr = (struct buzz_proto_header *)msg->data_ptr;
@@ -284,6 +298,8 @@ static void handle_file_get_request(struct buzz_frame_msg *msg)
             fs_mgmt_pm_close(&get_file_state.file);
             get_file_state.active = false;
             current_stream = STREAM_IDLE;
+            k_sleep(K_MSEC(10));
+            send_error_frame(msg, EIO);
             return;
         }
     }
@@ -363,16 +379,20 @@ static void process_file_get_stream(void)
         return;
     }
 
-    // Daten gelesen -> CRC aktualisieren und Chunk senden
+    // Chunk senden; CRC/Offset erst nach erfolgreichem Enqueue aktualisieren
-    get_file_state.crc32 = crc32_ieee_update(get_file_state.crc32, payload_ptr, read_len);
-    get_file_state.offset += read_len;
-
     hdr->frame_type = BUZZ_FRAME_FILE_CHUNK;
     hdr->payload_length = sys_cpu_to_le16(read_len);
 
     if (get_file_state.reply_cb)
     {
         int send_rc = get_file_state.reply_cb(buf, sizeof(*hdr) + read_len);
+        if (send_rc == -ENOMEM)
+        {
+            // BLE TX queue voll - Datei zurücksetzen, nächster Zyklus wiederholt den Chunk
+            fs_seek(&get_file_state.file, -(off_t)read_len, FS_SEEK_CUR);
+            buzz_proto_buf_free(&buf);
+            return;
+        }
         if (send_rc)
         {
             LOG_ERR("Failed to send FILE_CHUNK (err %d)", send_rc);
@@ -380,10 +400,15 @@ static void process_file_get_stream(void)
             get_file_state.active = false;
             current_stream = STREAM_IDLE;
             buzz_proto_buf_free(&buf);
+            k_sleep(K_MSEC(10));
+            send_stream_error(get_file_state.reply_cb, EIO);
             return;
         }
     }
 
+    // Erfolgreich eingereiht: State aktualisieren
+    get_file_state.crc32 = crc32_ieee_update(get_file_state.crc32, payload_ptr, read_len);
+    get_file_state.offset += read_len;
     get_file_state.credits--;
     get_file_state.retry_counter = 0;
     buzz_proto_buf_free(&buf);
@@ -590,6 +615,7 @@ static void buzz_proto_thread_fn(void *p1, void *p2, void *p3)
                 {
                     LOG_WRN("LS timeout waiting for ACK");
                     fs_mgmt_pm_closedir(&ls_state.dir);
+                    send_stream_error(ls_state.reply_cb, ETIMEDOUT);
                     ls_state.active = false;
                     current_stream = STREAM_IDLE;
                 }
@@ -608,6 +634,7 @@ static void buzz_proto_thread_fn(void *p1, void *p2, void *p3)
                 {
                     LOG_WRN("FILE_GET timeout waiting for ACK");
                     fs_close(&get_file_state.file);
+                    send_stream_error(get_file_state.reply_cb, ETIMEDOUT);
                     get_file_state.active = false;
                     current_stream = STREAM_IDLE;
                 }

firmware/prj.conf

@@ -3,22 +3,13 @@ CONFIG_LOG=y
 
 ### File System
 CONFIG_FS_MGMT=y
-CONFIG_FS_MGMT_LOG_LEVEL_DBG=y
+# CONFIG_FS_MGMT_LOG_LEVEL_DBG=y
 CONFIG_FS_LOG_LEVEL_WRN=y
 
 ### Bluetooth
 CONFIG_BLE_MGMT=y
 # CONFIG_BLE_MGMT_LOG_LEVEL_DBG=y
 
-# Explicit throughput tuning in project config (wins over competing defaults)
-CONFIG_BT_HCI_ACL_FLOW_CONTROL=y
-CONFIG_BT_BUF_CMD_TX_COUNT=24
-CONFIG_BT_BUF_ACL_TX_COUNT=20
-CONFIG_BT_L2CAP_TX_BUF_COUNT=20
-CONFIG_BT_CONN_TX_MAX=20
-CONFIG_BT_CTLR_SDC_TX_PACKET_COUNT=20
-CONFIG_BT_CTLR_SDC_RX_PACKET_COUNT=20
-
 # Advertising 500ms - 1s
 CONFIG_BLE_MGMT_ADV_INT_MIN=160
 CONFIG_BLE_MGMT_ADV_INT_MAX=320

webpage/package.json

@@ -9,9 +9,9 @@
     "astro": "astro"
   },
   "dependencies": {
-    "@astrojs/svelte": "^7.2.5",
+    "@astrojs/svelte": "^8.0.0",
     "@tailwindcss/vite": "^4.2.1",
-    "astro": "^5.17.1",
+    "astro": "^6.0.3",
     "prettier-plugin-svelte": "^3.5.1",
     "svelte": "^5.53.7",
     "tailwindcss": "^4.2.1",

webpage/src/components/App.svelte

@@ -0,0 +1,31 @@
+<script lang="ts">
+  import Header from "./components/Header.svelte";
+</script>
+
+<div class="flex flex-col min-h-screen">
+  <Header />
+
+  <main class="main-layout flex-grow">
+    
+    <section class="buzzer-card p-6 h-64">
+      <h3 class="text-sm font-bold text-slate-500 uppercase tracking-widest">Dateiverarbeitung</h3>
+      </section>
+
+    <section class="buzzer-card p-6 h-64">
+      <h3 class="text-sm font-bold text-slate-500 uppercase tracking-widest">Buzzer Status</h3>
+      </section>
+
+    <section class="buzzer-card p-6 h-96 lg:col-span-1">
+      <h3 class="text-sm font-bold text-slate-500 uppercase tracking-widest">Lokale Sounds</h3>
+    </section>
+
+    <section class="buzzer-card p-6 h-96 lg:col-span-1">
+      <h3 class="text-sm font-bold text-slate-500 uppercase tracking-widest">Buzzer Sounds</h3>
+    </section>
+
+  </main>
+
+  <footer class="hidden sm:flex justify-center items-center py-4 bg-slate-50 border-t border-slate-200 text-[10px] text-slate-400 uppercase tracking-widest">
+    &copy; 2026 Edis Buzzer Management Studio | Nerd Mode Active
+  </footer>
+</div>

webpage/src/components/AppGuard.svelte

@@ -1,61 +1,48 @@
 <script lang="ts">
   import { onMount } from "svelte";
-  import { isInitializing, isBluetoothSupported, isSerialSupported } from "../lib/store";
+  import { isInitializing, isBluetoothSupported } from "../lib/store";
-  import { performHardwareCheck, getBrowserName } from "../lib/init";
+  import { performHardwareCheck } from "../lib/init";
   import ToastContainer from "./ToastContainer.svelte";
-  import { injectDummyDevices } from "../lib/store";
 
-  let browserName = "";
+  onMount(async () => {
-  onMount(() => {
-    browserName = getBrowserName();
     performHardwareCheck();
-    injectDummyDevices(); // Fügt Dummy-Geräte für Testzwecke hinzu
+    
+    if ($isBluetoothSupported) {
+      const { restoreSession } = await import("../lib/bluetooth");
+      await restoreSession();
+    }
   });
 </script>
 
 {#if $isInitializing}
-  <div class="fixed inset-0 bg-slate-50 flex items-center justify-center z-[100]">
+  <div class="fixed inset-0 bg-surface flex items-center justify-center z-[100]">
-    <p class="text-slate-600 font-mono animate-pulse">SYSTEM_CHECK_RUNNING...</p>
+    <p class="text-on-surface font-mono animate-pulse text-base md:text-lg text-center">
-  </div>
+      Browserkompatibilität wird geprüft...
-{:else if !$isBluetoothSupported && !$isSerialSupported}
-  <div class="min-h-[60vh] flex items-center justify-center p-4">
-    <div class="max-w-md w-full bg-white border-2 border-red-600 shadow-2xl rounded-sm p-8 pb-4">
-      <h1 class="text-2xl font-black text-red-600 mb-4 uppercase italic">Inkompatibler Browser</h1>
-
-      <p class="text-slate-800 mb-6">
-        Du nutzt aktuell <strong>{browserName}</strong>
-        . Dieser Browser unterstützt weder Bluetooth noch serielle USB-Verbindungen.
     </p>
-
-      <div class="space-y-2 mb-4 text-sm font-mono">
-        <div class="flex justify-between border-b border-slate-100 pb-1">
-          <span>Web Bluetooth:</span>
-          <span class="text-red-600 font-bold">NICHT UNTERSTÜTZT</span>
   </div>
-        <div class="flex justify-between border-b border-slate-100 pb-1">
+{:else if !$isBluetoothSupported}
-          <span>Web Serial:</span>
+  <div
-          <span class="text-red-600 font-bold">NICHT UNTERSTÜTZT</span>
+    class="fixed lg:h-screen inset-0 flex flex-col items-center justify-center p-0 lg:p-4 z-[100] bg-white lg:bg-transparent" style="hyphens:auto;">
-        </div>
+    <div
-      </div>
+      class="w-full h-full lg:h-auto lg:max-w-md bg-red-50 lg:border border-red-600 lg:shadow-xl lg:rounded-lg p-6 lg:p-8 text-red-600 flex flex-col justify-center"
-
-      <p class="text-xs text-slate-500 mb-6 italic">
-        (Info: Firefox und Safari blockieren diese Hardware-Schnittstellen aus Prinzip.)
-      </p>
-
-      <a
-        href="https://www.google.com/chrome/"
-        class="block w-full text-center bg-blue-600 text-white py-3 font-bold hover:bg-blue-700 transition uppercase tracking-widest text-sm mb-4"
     >
-        Googles Glanzeisen installieren
+      <h1 class="text-2xl font-bold mb-2 text-center">Dein Browser ist... suboptimal</h1>
-      </a>
+      <div class="text-center text-7xl md:text-9xl font-bold mb-4">🥺</div>
 
-      <p class="text-xs text-slate-500 mb-6 italic">
+      <div class="space-y-4 text-base md:text-lg text-center md:text-left">
-        Gerüchten zufolge soll <b>Winzigweichs Kante</b>
+        <p>
-        -Browser diese Technologien auch unterstützen. Aber wer nutzt schon diese Weichware?
+          Leider unterstützt dein Browser die benötigten Bluetooth-Funktionen nicht. Bitte versuche
+          es mit einem aktuellen <span class="font-semibold">Chrome</span>
+          oder einem andern Chromium-basierten Browser.
+          <span class="font-semibold">Winzigweich Kante</span> soll gerüchteweise auch Chromium-basiert sein...
         </p>
+        <p>
+          Rundreise auf iOS unterstützt Bluetooth leider nicht, aber du kannst es mit einem vernünftigen Gerät oder Browser versuchen.
+        </p>
+      </div>
     </div>
   </div>
 {:else}
-  <ToastContainer client:load />
+  <ToastContainer />
   <slot />
 {/if}

webpage/src/components/BuzzerControl.svelte

@@ -9,9 +9,11 @@
     fsInfo,
     loadConnectionState,
     availableDevices,
+    transferStats,
+    resetTransferStats,
   } from "../lib/store";
   import { refreshRemote } from "../lib/sync";
-  import { fetchFileThroughputTest } from "../lib/transport";
+  import { getFile } from "../lib/transport";
 
   onMount(() => {
     restoreSession();
@@ -127,11 +129,40 @@
     {/if}
   </div>
   <button
-    class="mt-4 w-full text-left text-xs text-slate-500 hover:text-slate-700 transition"
+    class="mt-4 w-full text-left text-xs text-slate-500 hover:text-slate-700 transition-all"
-    on:click={() => {
+    on:click={async () => {
-      fetchFileThroughputTest("/lfs/a/countdown");
+      // 1. Alles auf Null setzen
+      resetTransferStats();
+
+      // 2. Gesamtgröße für beide Dateien zusammen setzen (z. B. 320000 + 224800)
+      const sizeFile1 = 320000;
+      const sizeFile2 = 224800;
+      transferStats.update((s) => ({
+        ...s,
+        overallTotal: sizeFile1 + sizeFile2,
+        currentFileName: "countdown",
+      }));
+
+      try {
+        // 3. Erste Datei laden und auf Abschluss warten
+        const success1 = await getFile("/lfs/a/countdown");
+
+        if (success1) {
+          // 4. Name für die zweite Datei aktualisieren
+          transferStats.update((s) => ({ ...s, currentFileName: "404" }));
+
+          // 5. Zweite Datei laden und auf Abschluss warten
+          await getFile("/lfs/a/404");
+          transferStats.update((s) => ({ ...s, overallDone: s.overallTotal }));
+        }
+      } catch (err) {
+        console.error("Fehler beim Test-Transfer:", err);
+      } finally {
+        await new Promise(r => setTimeout(r, 2000))
+        resetTransferStats();
+      }
     }}
   >
-    Durchsatztest mit /lfs/a/countdown
+    Durchsatztest (Mehrere Dateien)
   </button>
 </div>

webpage/src/components/DeviceInfo.svelte

@@ -0,0 +1,72 @@
+<script lang="ts">
+    import FlashUsage from "./FlashUsage.svelte"
+    import { BatteryEmptyIcon, BatteryLowIcon, BatteryMediumIcon, BatteryHighIcon, BatteryFullIcon, BatteryChargingIcon } from "phosphor-svelte"
+    
+</script>
+<div class="text-sm">
+    <table>
+        <tbody>
+            <tr>
+                <td class="key">
+                    Modell
+                </td>
+                <td class="value">
+                    nrf52840dk-prototyp
+                </td>
+            </tr>
+            <tr>
+                <td class="key">
+                    Version
+                </td>
+                <td class="value">
+                    2.3.22-debug
+                </td>
+            </tr>
+            <tr>
+                <td class="key">
+                    HW-ID
+                </td>
+                <td class="value">
+                    <span class="font-mono">DEAD-BEAF-0102-3456</span>
+                </td>
+            </tr>
+            <tr>
+                <td class="key">
+                    Batterie
+                </td>
+                <td class="value flex items-center gap-2">
+                    85% <BatteryChargingIcon weight="bold" class="w-5 h-5"/> 1200mAh
+                </td>
+            </tr>
+            <tr>
+                <td class="key">
+                    Speicher
+                </td>
+                <td class="value">
+                    <div class="py-1">
+                        <FlashUsage/>
+                    </div>
+                </td>
+            </tr>
+        </tbody>
+    </table>
+</div>
+
+<style>
+  @reference "../styles/app.css";
+
+  table {
+    @apply w-full text-left;
+  }
+
+  tr {
+    @apply even:bg-slate-100 border-b border-slate-200 last:border-0;
+  }
+
+  .key {
+    @apply p-1 pl-4 text-right text-text-muted;
+  }
+
+  .value {
+    @apply p-1 pr-4 font-semibold;
+  }

webpage/src/components/FileList.svelte

@@ -0,0 +1,13 @@
+<script lang="ts">
+    import FileListItem from "./FileListItem.svelte";
+    import { buzzerAudioFiles } from "../lib/store";
+    import type { BuzzerFile  } from "../lib/types";
+
+    export let type: "local" | "buzzer" = "buzzer";
+</script>
+
+<div>
+    {#each $buzzerAudioFiles as file, index(index)}
+    <FileListItem bind:file={file}/>
+    {/each}
+</div>

webpage/src/components/FileListItem.svelte

@@ -0,0 +1,35 @@
+<script lang="ts">
+    import type { BuzzerFile } from "../lib/types";
+    import { FileAudioIcon } from "phosphor-svelte";
+    export let file: BuzzerFile;
+</script>
+<div>
+  <button
+    class="w-full text-left flex-1 px-3 py-1 flex items-center cursor-pointer border-l-4 transition-colors border-b border-b-border-card
+           {file.selected ? 'border-l-blue-600 bg-blue-50 hover:bg-blue-100' : 'border-l-transparent hover:bg-slate-100 hover:border-l-blue-200'} "
+           on:click={() => {file.selected = !file.selected;}}
+           >
+    <FileAudioIcon class="text-blue-600 mr-3 w-5 h-5" />
+     <div class="flex flex-col">
+      <span class="font-light">
+        {file.name || "Unbekannte Datei"}
+        {#if file.metaTags?.t}
+          &thinsp;-&thinsp;
+          <span class="font-medium">{file.metaTags.t}</span>
+        {/if}
+      </span>
+      <div class="text-xs">
+        <span class="font-light text-text-muted text-xs">
+            {parseFloat((file.size/1024).toFixed(1))}&thinsp;kB
+        </span>
+        <span>
+            {#if file.metaTags.a}<span class="text-text-muted"> | Author:</span>&thinsp;{file.metaTags.a}{/if}
+        </span>
+      </div>
+    </div>
+  </button>
+</div>
+
+<style>
+
+</style>

webpage/src/components/FileTransfer.svelte

@@ -1,27 +0,0 @@
-<script lang="ts">
-  import { storageUsage } from "../lib/store";
-</script>
-
-<div class="mt-4 w-full h-3 bg-slate-100 rounded-sm overflow-hidden flex shadow-inner">
-  <div
-    class="h-full bg-slate-400 transition-all duration-500"
-    style="width: {$storageUsage?.systemPercent ?? 0}%"
-  ></div>
-
-<div class="mt-1 text-xs text-slate-400 flex justify-between uppercase tracking-tighter font-medium">
-  {#if $storageUsage}
-    <div class="flex gap-4">
-      <div>
-        <span class="font-semibold text-slate-400">
-          Rate: {($storageUsage.systemBytes / 1048576).toFixed(2)} MB
-        </span>
-      </div>
-     <div>
-      <span class="font-semibold text-slate-400">
-        {($storageUsage.freeBytes / 1048576).toFixed(2)} Sekunden
-      </span>
-    </div>
-  {:else}
-    <div class="text-slate-400">Kein Transfer aktiv</div>
-  {/if}
-</div>

webpage/src/components/FlashUsage.svelte

@@ -2,39 +2,37 @@
   import { storageUsage } from "../lib/store";
 </script>
 
-<div class="mt-4 w-full h-3 bg-slate-100 rounded-sm overflow-hidden flex shadow-inner">
+<div class="w-full h-3 bg-slate-100 rounded-sm overflow-hidden flex shadow-inner shadow-sm">
   <div
-    class="h-full bg-slate-400 transition-all duration-500"
+    class="h-full bg-gradient-to-b from-slate-300 to-slate-400 transition-all duration-500"
     style="width: {$storageUsage?.systemPercent ?? 0}%"
   ></div>
 
   <div
-    class="h-full bg-indigo-500 transition-all duration-500"
+    class="h-full bg-gradient-to-b from-indigo-300 to-indigo-500 transition-all duration-500"
     style="width: {$storageUsage?.audioPercent ?? 0}%"
   ></div>
 
   <div
-    class="h-full bg-emerald-500 transition-all duration-500"
+    class="h-full bg-gradient-to-b from-emerald-300 to-emerald-500 transition-all duration-500"
     style="width: {$storageUsage?.freePercent ?? 0}%"
   ></div>
 </div>
 
-<div class="mt-1 text-xs text-slate-400 flex justify-between uppercase tracking-tighter font-medium">
+<div class="text-xs text-slate-400 flex justify-between">
   {#if $storageUsage}
     <div class="flex gap-4">
       <div>
         <span class="font-semibold text-slate-400">System:
-        {($storageUsage.systemBytes / 1048576).toFixed(2)} MB</span>
+        {($storageUsage.systemBytes / 1048576).toFixed(2)}&thinsp;MB</span>
-      </div>
-      <div>
         <span class="font-semibold text-indigo-500">Audio:
-        {($storageUsage.audioBytes / 1048576).toFixed(2)} MB</span>
+        {($storageUsage.audioBytes / 1048576).toFixed(2)}&thinsp;MB</span>
       </div>
     </div>
 
     <div>
       <span class="font-semibold text-emerald-500">Frei:
-      {($storageUsage.freeBytes / 1048576).toFixed(2)} MB</span>
+      {($storageUsage.freeBytes / 1048576).toFixed(2)}&thinsp;MB</span>
     </div>
   {:else}
     <div class="text-slate-400">Speicherdaten nicht verfügbar</div>

webpage/src/components/Header.svelte

@@ -0,0 +1,205 @@
+<script lang="ts">
+  import HeaderDeviceListItem from "./HeaderDeviceListItem.svelte";
+  import {
+    PlugsIcon,
+    PlugsConnectedIcon,
+    BluetoothIcon,
+    CaretDownIcon,
+    LinkIcon,
+    UsbIcon,
+    SquareIcon,
+    CheckSquareIcon,
+  } from "phosphor-svelte";
+  import { slide } from "svelte/transition";
+  import { 
+    isConnected, isConnecting, availableDevices, pairedDevices, 
+    activeDeviceId, autoConnect, loadConnectionState, fsInfo
+  } from "../lib/store";
+  import { connectBuzzer, disconnectBuzzer, pairBuzzer, forgetDevice, getPairedDevices } from "../lib/bluetooth";
+
+  let showDropdown = false;
+
+  $: lastDeviceId = loadConnectionState()?.deviceId;
+  $: targetDevice = $pairedDevices.find(d => d.id === lastDeviceId);
+  $: canQuickConnect = targetDevice ? $availableDevices.has(targetDevice.id) : false;
+  $: autoConnectIcon = $autoConnect ? CheckSquareIcon : SquareIcon;
+
+  async function handleMainAction() {
+    showDropdown = false;
+    if ($isConnected) {
+      disconnectBuzzer();
+    } else if (canQuickConnect && targetDevice) {
+      await connectBuzzer(targetDevice);
+    } else {
+      await pairBuzzer();
+    }
+  }
+
+  function clickOutside(node: HTMLElement) {
+    const handleClick = (event: MouseEvent) => {
+      if (!node.contains(event.target as Node) && !event.defaultPrevented) {
+        node.dispatchEvent(new CustomEvent("outclick"));
+      }
+    };
+
+    document.addEventListener("click", handleClick, true);
+
+    return {
+      destroy() {
+        document.removeEventListener("click", handleClick, true);
+      },
+    };
+  }
+</script>
+
+<header
+  class="fixed top-0 left-0 w-full h-16 bg-surface-card border-b border-border-card z-50 flex items-center justify-between px-4 lg:px-8 bg-gradient-to-b from-white to-slate-100"
+>
+  <div class="flex items-center">
+    <span class="text-lg uppercase text-brand">
+      <span class="font-extrabold">Edis&nbsp;Buzzer</span>
+      &nbsp;
+      <span class="font-light">CONTROL</span>
+    </span>
+  </div>
+
+  <div class="relative" class:disabled={$isConnecting} use:clickOutside on:outclick={() => (showDropdown = false)}>
+    <div
+      class="btn-connect-group"
+      class:connected={$isConnected}
+      class:last-available={!$isConnected && canQuickConnect}
+      class:last-unavailable={!$isConnected && !canQuickConnect}
+    >
+      <button class="btn-main" on:click={handleMainAction} disabled={$isConnecting}>
+        {#if $isConnected}
+          <PlugsIcon weight="fill" class="w-4 h-4" />
+          <span class="hidden sm:inline">Trennen</span>
+        {:else if canQuickConnect}
+          <PlugsConnectedIcon weight="fill" class="w-4 h-4" />
+          <span class="hidden sm:inline">Verbinden</span>
+        {:else}
+          <LinkIcon weight="bold" class="w-4 h-4" />
+          <span class="hidden sm:inline">Neues Gerät</span>
+        {/if}
+      </button>
+
+      <button class="btn-dropdown" on:click={() => (showDropdown = !showDropdown)} disabled={$isConnecting}>
+        <CaretDownIcon
+          weight="bold"
+          class="w-4 h-4 transition-transform duration-300 {showDropdown ? '-scale-y-100' : ''}"
+        />
+      </button>
+    </div>
+
+    {#if showDropdown}
+      <div
+        transition:slide={{ duration: 300 }}
+        class="absolute right-0 top-12 bg-surface-card shadow-xl rounded-lg border border-border-card p-0 z-50 overflow-hidden
+        w-max max-w-[calc(100vw-2rem)] sm:max-w-md min-w-[16rem]"
+      >
+        {#each $pairedDevices as dev (dev.id)}
+          <HeaderDeviceListItem
+            device={dev}
+            name={dev.name || ''}
+            isConnected={$activeDeviceId === dev.id}
+            isLastConnectedDevice={lastDeviceId === dev.id}
+            isAvailable={$availableDevices.has(dev.id)}
+            on:connect={(e) => { connectBuzzer(e.detail); showDropdown = false; }}
+            on:forget={(e) => forgetDevice(e.detail)}
+          />
+        {/each}
+
+        {#if $pairedDevices.length === 0}
+          <div class="px-4 py-3 text-xs text-text-muted text-center italic border-b border-border-card">
+            Keine Geräte gekoppelt
+          </div>
+        {/if}
+
+        <div
+          class="flex-1 pr-3 pl-4 py-1 flex items-center menu-connect relative before:absolute before:left-0 before:top-0 before:bottom-0 before:w-1"
+        >
+          <button class="flex items-center w-full text-left" on:click={() => { pairBuzzer(); showDropdown = false; }}>
+            <LinkIcon weight="bold" class="mr-2 w-5 h-5" />
+            <div class="flex-1">
+              <div class="flex flex-col">
+                <span class="py-2">
+                  Buzzer über Bluetooth <BluetoothIcon weight="bold" class="w-4 h-4 flex inline" /> verbinden
+                </span>
+              </div>
+            </div>
+          </button>
+        </div>
+        <div
+          class="flex-1 pr-3 pl-4 py-1 flex items-center menu-connect relative before:absolute before:left-0 before:top-0 before:bottom-0 before:w-1"
+        >
+          <button class="flex items-center w-full text-left">
+            <LinkIcon weight="bold" class="mr-2 w-5 h-5 opacity-50" />
+            <div class="flex-1 opacity-50">
+              <div class="flex flex-col">
+                <span class="py-2">
+                  Buzzer über USB <UsbIcon weight="bold" class="w-4 h-4 flex inline" /> verbinden
+                </span>
+              </div>
+            </div>
+          </button>
+        </div>
+        <div
+          class="flex-1 pr-3 pl-4 py-1 flex items-center menu-auto relative before:absolute before:left-0 before:top-0 before:bottom-0 before:w-1"
+        >
+          <button class="flex items-center w-full text-left" on:click={() => $autoConnect = !$autoConnect}>
+            <svelte:component this={autoConnectIcon} class="mr-2 w-5 h-5" />
+            <div class="flex-1">
+              <div class="flex flex-col">
+                <span class="py-2">Automatisch verbinden</span>
+              </div>
+            </div>
+          </button>
+        </div>
+      </div>
+    {/if}
+  </div>
+</header>
+
+<style>
+  @reference "../styles/app.css";
+
+  .connected { 
+    @apply border-border-card;
+  }
+
+  .connected .btn-main, .connected .btn-dropdown {
+    @apply hover:bg-surface-hover text-slate-700;
+  }
+
+  .last-available, .last-unavailable {
+    @apply border-transparent;
+  }
+
+  .last-available .btn-main, .last-available .btn-dropdown {
+    @apply bg-emerald-600 hover:bg-emerald-700 text-white;
+  }
+
+  .last-unavailable .btn-main, .last-unavailable .btn-dropdown {
+    @apply bg-indigo-600 hover:bg-indigo-700 text-white;
+  }
+
+  .btn-connect-group {
+    @apply flex items-stretch rounded-lg overflow-hidden shadow-sm border;
+  }
+
+  .btn-main {
+    @apply flex items-center gap-2 p-2 text-sm font-semibold transition-colors outline-none cursor-pointer disabled:opacity-50;
+  }
+
+  .btn-dropdown {
+    @apply flex items-center justify-center px-2 py-2 transition-colors outline-none cursor-pointer disabled:opacity-50;
+  }
+
+  .menu-connect {
+    @apply text-blue-700 hover:bg-surface-hover font-semibold border-b last:border-b-0 border-border-card cursor-pointer;
+  }
+
+  .menu-auto {
+    @apply hover:bg-surface-hover font-semibold border-b last:border-b-0 border-border-card cursor-pointer;
+  }
+</style>

webpage/src/components/HeaderDeviceListItem.svelte

@@ -0,0 +1,66 @@
+<!-- HeaderDeviceListItem.svelte -->
+<script lang="ts">
+  import { BluetoothIcon, BluetoothSlashIcon, LinkBreakIcon } from "phosphor-svelte";
+  import { createEventDispatcher } from "svelte";
+
+  export let device: any = null;
+  export let isAvailable: boolean = false;
+  export let isLastConnectedDevice: boolean = false;
+  export let isConnected: boolean = false;
+  export let name: string = "";
+  export let type: string = "ble";
+
+  let isHovered = false;
+  const dispatch = createEventDispatcher();
+</script>
+
+<div
+  class="flex-1 pr-3 pl-4 py-1 flex items-center relative
+    border-b border-border-card
+    before:absolute before:left-0 before:top-0 before:bottom-0 before:w-1
+    {isAvailable || isConnected ? '' : 'text-text-muted cursor-not-allowed'}
+    {isConnected && isLastConnectedDevice ? 'bg-bg-selected ' : ''}
+    {isAvailable && !isConnected ? 'hover:bg-surface-hover' : ''}
+    {isLastConnectedDevice ? 'before:bg-border-selected' : ''}
+  "
+>
+  <button
+    class="flex-1 flex items-center text-left min-2-0"
+    on:click={() => dispatch("connect", device)}
+    disabled={!isAvailable || isConnected}
+  >
+    {#if type === "ble"}
+      {#if isAvailable || isConnected}
+        <BluetoothIcon class="text-blue-600 mr-2 w-5 h-5" />
+      {:else}
+        <BluetoothSlashIcon class="mr-2 w-5 h-5" />
+      {/if}
+    {/if}
+
+    <div class="flex-1 min-w-0">
+      <div class="flex flex-col">
+        <span class="font-medium text-sm truncate">
+          {name || "Unbekanntes Gerät"}
+        </span>
+        {#if isConnected}
+          <span class="text-xs font-semibold">Verbunden</span>
+        {:else if isAvailable}
+          <span class="text-xs">In Reichweite</span>
+        {:else if !isAvailable}
+          <span class="text-xs">Nicht in Reichweite</span>
+        {/if}
+      </div>
+    </div>
+  </button>
+  <button
+    on:mouseenter={() => (isHovered = true)}
+    on:mouseleave={() => (isHovered = false)}
+    title="'{name}' entfernen"
+    class="flex-shrink-0"
+  >
+    <LinkBreakIcon
+      weight={isHovered ? "bold" : "regular"}
+      class="w-7 h-7 p-1 ml-3 rounded text-red-600 hover:bg-red-600 hover:text-white"
+    />
+  </button>
+</div>

webpage/src/components/MainGrid.svelte

@@ -0,0 +1,301 @@
+<script lang="ts">
+  import { isConnected, fsInfo } from "../lib/store";
+  import {
+    GearIcon,
+    CloudArrowUpIcon,
+    ListIcon,
+    ArrowClockwiseIcon,
+    DotsThreeVerticalIcon,
+    CheckSquareOffsetIcon,
+    SquareIcon,
+    DownloadIcon,
+    XIcon,
+  } from "phosphor-svelte";
+  import FileList from "./FileList.svelte";
+  import DeviceInfo from "./DeviceInfo.svelte";
+  import { refreshRemote, downloadSelectedFiles } from "../lib/sync";
+  import {
+    buzzerAudioFiles,
+    buzzerFilesCount,
+    selectedBuzzerFilesCount,
+    transferStats,
+    isFetchingRemote,
+    pairedDevices,
+    activeDeviceId,
+    transferDetails,
+  } from "../lib/store";
+  import { SETTINGS } from "../lib/settings";
+  import { fade } from "svelte/transition";
+
+  let showOverlay = false;
+  let isTransferFinished = false;
+  let overlayTimeout: ReturnType<typeof setTimeout>;
+
+  $: currentDevice = $pairedDevices.find((d) => d.id === $activeDeviceId);
+
+  $: if ($isConnected) {
+    refreshRemote();
+  }
+
+  $: if ($isFetchingRemote && $transferStats.overallTotal > 0) {
+    // Transfer startet oder läuft
+    showOverlay = true;
+    isTransferFinished = false;
+    clearTimeout(overlayTimeout);
+  } else if (showOverlay && !$isFetchingRemote && $transferStats.overallDone > 0) {
+    // Transfer wurde soeben abgeschlossen
+    isTransferFinished = true;
+    overlayTimeout = setTimeout(closeOverlay, SETTINGS.ui.transferOverlayPersistMs);
+  }
+
+  function closeOverlay() {
+    clearTimeout(overlayTimeout);
+    showOverlay = false;
+    isTransferFinished = false;
+    // Optional: resetTransferStats() aufrufen, um die Werte zu nullen
+  }
+
+  function formatTime(seconds: number): string {
+    if (!isFinite(seconds) || seconds < 0) return "∞";
+    const m = Math.floor(seconds / 60);
+    const s = Math.floor(seconds % 60);
+    return `${m.toString().padStart(2, "0")}:${s.toString().padStart(2, "0")} Min.`;
+  }
+</script>
+
+<div class="main-layout mt-16 lg:mt-20 pb-12">
+  <section class="buzzer-card flex flex-col">
+    <div class="card-header">
+      <h3 class="card-title">Dateiverarbeitung</h3>
+      <button class="btn" aria-label="Einstellungen">
+        <GearIcon class="icon" />
+      </button>
+    </div>
+    <div class="card-body p-4">
+      <div class="flex justify-center items-center">
+        <div class="text-center text-2xs tracking-tight font-mono font-semibold">
+          16kHz 16bit MONO | <span class="text-emerald-700">NORMALIZER ON</span>
+          |
+          <span class="text-red-700">COMPRESSOR OFF</span>
+        </div>
+      </div>
+      <div class="flex items-center justify-center">
+        <CloudArrowUpIcon class="w-24 h-24 text-slate-500" />
+      </div>
+    </div>
+  </section>
+
+  <section class="buzzer-card flex flex-col">
+    <div class="card-header">
+      <h3 class="card-title">
+        {#if $isConnected && currentDevice?.name}
+          Geräteinfos: <span class="font-normal">{currentDevice.name}</span>
+        {/if}
+      </h3>
+      <button class="btn" aria-label="Einstellungen" disabled={!$isConnected}>
+        <GearIcon class="icon" />
+      </button>
+    </div>
+
+    <div class="relative overflow-hidden h-full">
+      <div class="card-body transition-all duration-500 h-full" class:disconnected={!$isConnected}>
+        <DeviceInfo />
+      </div>
+
+      {#if showOverlay}
+        <div
+          class="absolute inset-0 z-10 bg-white/95 backdrop-blur-[2px] p-4 flex flex-col justify-end"
+          transition:fade={{ duration: 300 }}
+        >
+          {#if isTransferFinished}
+            <button
+              class="absolute top-2 right-2 p-1 text-slate-400 hover:text-slate-700 transition-colors"
+              on:click={closeOverlay}
+              aria-label="Overlay schließen"
+            >
+              <XIcon class="w-5 h-5" />
+            </button>
+          {/if}
+
+          <div class="w-full flex flex-col gap-1">
+            <div class="flex flex-col gap-1">
+              <div
+                class="relative w-full h-3 bg-slate-100 rounded-sm overflow-hidden shadow-inner shadow-sm"
+              >
+                <div
+                  class="absolute top-0 left-0 h-full bg-gradient-to-b from-indigo-300 to-indigo-500"
+                  style="width: {$transferDetails.filePercent}%; transition: {$transferDetails.filePercent ===
+                  0
+                    ? 'none'
+                    : `width ${SETTINGS.ui.transferUpdateIntervalMs}ms linear`};"
+                ></div>
+                <div
+                  class="absolute inset-0 flex items-center justify-center text-[10px] text-slate-500"
+                >
+                  {$transferDetails.filePercent}%
+                </div>
+                <div
+                  class="absolute inset-0 flex items-center justify-center text-[10px] text-white"
+                  style="clip-path: inset(0 {100 -
+                    $transferDetails.filePercent}% 0 0); transition: {$transferDetails.filePercent ===
+                  0
+                    ? 'none'
+                    : `clip-path ${SETTINGS.ui.transferUpdateIntervalMs}ms linear`};"
+                >
+                  {$transferDetails.filePercent}%
+                </div>
+              </div>
+              <div class="flex justify-between text-[10px] px-1">
+                <span class="truncate max-w-[60%]">
+                  {$transferStats.currentFileName || "Lade..."}
+                </span>
+                <span>{formatTime($transferDetails.fileEta)}</span>
+              </div>
+            </div>
+
+            <div class="flex flex-col gap-1">
+              <div
+                class="relative w-full h-3 bg-slate-100 rounded-sm overflow-hidden shadow-inner shadow-sm"
+              >
+                <div
+                  class="absolute top-0 left-0 h-full bg-gradient-to-b from-indigo-300 to-indigo-500"
+                  style="width: {$transferDetails.totalPercent}%; transition: {$transferDetails.totalPercent ===
+                  0
+                    ? 'none'
+                    : `width ${SETTINGS.ui.transferUpdateIntervalMs}ms linear`};"
+                ></div>
+                <div
+                  class="absolute inset-0 flex items-center justify-center text-[10px] text-slate-500"
+                >
+                  {$transferDetails.totalPercent}%
+                </div>
+                <div
+                  class="absolute inset-0 flex items-center justify-center text-[10px] text-white"
+                  style="clip-path: inset(0 {100 -
+                    $transferDetails.totalPercent}% 0 0); transition: {$transferDetails.totalPercent ===
+                  0
+                    ? 'none'
+                    : `clip-path ${SETTINGS.ui.transferUpdateIntervalMs}ms linear`};"
+                >
+                  {$transferDetails.totalPercent}%
+                </div>
+              </div>
+              <div class="flex justify-between text-[10px] px-1">
+                <span>{$transferDetails.speedKbs} kB/s</span>
+                <span>{formatTime($transferDetails.totalEta)}</span>
+              </div>
+            </div>
+
+            <div class="flex justify-center mt-1">
+              <button
+                class="px-4 py-1.5 text-xs font-semibold text-red-600 bg-red-50 hover:bg-red-100 rounded-md transition-colors disabled:opacity-50 disabled:cursor-not-allowed"
+                disabled={true}
+              >
+                Transfer abbrechen
+              </button>
+            </div>
+          </div>
+        </div>
+      {/if}
+    </div>
+  </section>
+
+  <section class="buzzer-card">
+    <div class="card-header">
+      <h3 class="card-title">Lokale Bibliothek</h3>
+      <button class="btn" aria-label="Menu">
+        <ListIcon class="icon" />
+      </button>
+    </div>
+    <div class="card-body">
+      <div class="py-10 text-center">
+        <span class="text-slate-300 uppercase italic tracking-widest">Bibliothek leer</span>
+      </div>
+    </div>
+  </section>
+
+  <section class="buzzer-card relative">
+    <div class="card-header">
+      <div>
+        <h3 class="card-title">
+          Gerätebibliothek <span class="text-text-muted text-xs font-mono">
+            {$fsInfo?.audioPath}
+          </span>
+        </h3>
+      </div>
+      <div>
+        <div class="btn-connect-group group">
+          <button
+            class="btn-main"
+            aria-label="Alle ausgewählten Dateien herunterladen"
+            on:click={() => {
+              downloadSelectedFiles();
+            }}
+            disabled={!$isConnected || $selectedBuzzerFilesCount === 0}
+            title="Alle ausgewählten Dateien herunterladen"
+          >
+            <DownloadIcon class="icon" />
+          </button>
+          <button
+            class="btn-main"
+            aria-label="Alles Auswählen"
+            on:click={() => {
+              buzzerAudioFiles.update((files) => files.map((f) => ({ ...f, selected: true })));
+            }}
+            disabled={!$isConnected || $buzzerFilesCount === $selectedBuzzerFilesCount}
+            title="Alle auswählen"
+          >
+            <CheckSquareOffsetIcon class="icon" />
+          </button>
+          <button
+            class="btn-main"
+            on:click={() => {
+              buzzerAudioFiles.update((files) => files.map((f) => ({ ...f, selected: false })));
+            }}
+            aria-label="Auswahl löschen"
+            disabled={!$isConnected || $selectedBuzzerFilesCount === 0}
+            title="Auswahl aufheben"
+          >
+            <SquareIcon class="icon" />
+          </button>
+          <button
+            class="btn-main"
+            on:click={() => refreshRemote()}
+            aria-label="Reload"
+            disabled={!$isConnected}
+            title="Dateiliste neu laden"
+          >
+            <ArrowClockwiseIcon class="icon" />
+          </button>
+          <button class="btn-main" aria-label="Menu" disabled={!$isConnected} title="Menu">
+            <DotsThreeVerticalIcon weight="bold" class="icon" />
+          </button>
+        </div>
+      </div>
+    </div>
+    <div class="card-body" class:disconnected={!$isConnected}>
+      <FileList type="buzzer" />
+    </div>
+  </section>
+</div>
+
+<style>
+  @reference "../styles/app.css";
+
+  .btn-connect-group {
+    @apply flex items-stretch rounded overflow-hidden border-transparent transition-all hover:border-slate-200 hover:shadow-sm;
+  }
+
+  .btn-main {
+    @apply border-r-1 border-r-transparent last:border-r-0;
+
+    &:not(:disabled) {
+      @apply hover:border-border-card hover:shadow-sm hover:bg-slate-200 cursor-pointer group-hover:border-r-slate-200;
+    }
+
+    &:disabled {
+      color: color-mix(in srgb, currentColor 50%, transparent);
+      @apply cursor-not-allowed group-hover:border-r-slate-200;
+    }
+  }
+</style>

webpage/src/components/TransferProgress.svelte

@@ -0,0 +1,61 @@
+<script lang="ts">
+  import { transferDetails, transferStats } from "../lib/store";
+  import { fade, slide } from 'svelte/transition';
+
+  // Formatiert Sekunden zu "M:SS m" oder "S s" mit schmalem Leerzeichen
+  $: formatTime = (seconds: number): string => {
+    if (seconds === Infinity || seconds > 3600) return '∞';
+    
+    const narrowNbsp = '\u202F';
+
+    if (seconds >= 60) {
+      const m = Math.floor(seconds / 60);
+      const s = Math.floor(seconds % 60);
+      return `${m}:${s.toString().padStart(2, '0')}${narrowNbsp}m`;
+    }
+
+    return `${Math.floor(seconds)}${narrowNbsp}s`;
+  };
+</script>
+
+<div class="mt-4 min-h-[100px]">
+{#if $transferStats.bytesTotal > 0}
+  <div class="flex flex-col gap-3 mt-4 w-full" transition:slide={{ duration: 400 }}>
+    
+    <div class="flex flex-col gap-1">
+      <div class="flex justify-between text-[10px] tracking-tighter font-bold text-slate-500">
+        <span class="truncate">Datei: {$transferStats.currentFileName || 'Übertragung...'}</span>
+        <span>{formatTime($transferDetails.fileEta)}</span>
+      </div>
+      <div class="w-full h-2 bg-slate-100 rounded-full overflow-hidden shadow-inner">
+        <div 
+          class="h-full bg-blue-500 transition-all duration-500 ease-out"
+          style="width: {$transferDetails.filePercent}%"
+        ></div>
+      </div>
+    </div>
+
+    <div class="flex flex-col gap-1">
+      <div class="flex justify-between text-[10px] tracking-tighter font-bold text-slate-500">
+        <span>Gesamtfortschritt</span>
+        <span>{formatTime($transferDetails.totalEta)}</span>
+      </div>
+      <div class="w-full h-3 bg-slate-100 rounded-full overflow-hidden shadow-inner">
+        <div 
+          class="h-full bg-slate-400 transition-all duration-500 ease-out"
+          style="width: {$transferDetails.totalPercent}%"
+        ></div>
+      </div>
+    </div>
+
+    <div class="flex justify-between text-[10px] tracking-tighter font-medium text-slate-400">
+      <span>Rate: {$transferDetails.speedKbs.toFixed(0)}kBps</span>
+      <span>{$transferDetails.totalPercent}% abgeschlossen</span>
+    </div>
+  </div>
+{:else}
+  <div class="mt-4 text-xs text-slate-400 italic text-center tracking-widest" transition:slide={{ duration: 400 }}>
+    Kein Transfer aktiv
+  </div>
+{/if}
+</div>

webpage/src/layouts/MainLayout.astro

@@ -1,29 +1,15 @@
+<!-- MainLayout.astro -->
 ---
-import "../styles/global.css";
+import "../styles/app.css";
-const year = new Date().getFullYear();
 ---
 
 <html lang="de">
     <head>
         <meta charset="utf-8" />
+        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
         <title>Edis Buzzer</title>
     </head>
-    
+    <body class="bg-surface text-on-surface antialiased transition-colors duration-300">
-    <body class="antialiased bg-slate-50 text-primary pt-16 pb-12">
-
-        <nav class="fixed top-0 left-0 w-full z-50 bg-white shadow-bottom px-4 py-3 h-16 flex items-center">
-            <span class="uppercase font-bold text-xl tracking-narrow font-mono italic">EDIS_BUZZER</span>
-        </nav>
-
-        <main class="mx-auto max-w-screen-lg px-4 py-8 w-full">
         <slot />
-        </main>
-
-        <footer class="fixed bottom-0 left-0 w-full z-50 bg-white text-xs text-slate-500 h-12 flex items-center shadow-top">
-            <div class="mx-auto px-4 w-full text-center">
-                &copy; 2026-{year} iten engineering. Alle Rechte vorbehalten.
-            </div>
-        </footer>
-
     </body>
 </html>

webpage/src/lib/bluetooth.ts

@@ -1,5 +1,5 @@
 import { get } from 'svelte/store';
-import { injectDummyDevices, isConnected, isPaired, isConnecting, pairedDevices, availableDevices, activeDeviceId, saveConnectionState, loadConnectionState, targetDeviceId, resetLocal, resetRemote } from './store';
+import { isConnected, isPaired, isConnecting, pairedDevices, availableDevices, activeDeviceId, saveConnectionState, loadConnectionState, targetDeviceId, resetLocal, resetRemote, autoConnect } from './store';
 import { BLE } from './protocol/constants';
 import { parseIncomingFrame } from './protocol';
 import { registerTransport, handleTransportDisconnect, handleTransportConnect } from './transport';
@@ -9,27 +9,25 @@ import { SETTINGS } from './settings';
 let rxCharacteristic: BluetoothRemoteGATTCharacteristic | null = null;
 let txCharacteristic: BluetoothRemoteGATTCharacteristic | null = null;
 let device: BluetoothDevice | null = null;
+let writeQueue = Promise.resolve();
 
 export async function restoreSession() {
     try {
         const devices = await getPairedDevices();
         if (devices.length > 0) {
             isPaired.set(true);
-            startScanningAdvertisements(devices);
 
+            // Zuerst das Zielgerät definieren
             const savedState = loadConnectionState();
-            if (savedState && savedState.autoConnect && savedState.transport === 'ble') {
+            if (savedState) {
-                const targetDev = devices.find(d => d.id === savedState.deviceId);
-                if (targetDev) {
-                    addToast("Versuche automatische Wiederverbindung...", "info");
-                    await connectBuzzer(targetDev);
-                }
-            } else if (savedState) {
                 targetDeviceId.set(savedState.deviceId);
                 device = devices.find(d => d.id === savedState.deviceId) || devices[0];
             } else {
                 device = devices[0];
             }
+
+            // Danach das Scanning starten (die Auto-Connect-Logik liegt nun in den Callbacks)
+            startScanningAdvertisements(devices);
         }
     } catch (error) {
         console.error("Session-Wiederherstellung fehlgeschlagen:", error);
@@ -38,19 +36,24 @@ export async function restoreSession() {
 
 async function startScanningAdvertisements(devices: BluetoothDevice[]) {
     for (const dev of devices) {
-        // Sicherheits-Check für Mock-Objekte
         if (typeof dev.addEventListener !== 'function') continue;
 
-        dev.addEventListener('advertisementreceived', () => {
+        dev.addEventListener('advertisementreceived', async () => {
+            // Gerät als verfügbar markieren
             availableDevices.update(set => {
                 const newSet = new Set(set);
                 newSet.add(dev.id);
                 return newSet;
             });
+
+            // Auto-Connect ausführen, sobald das Gerät funkt und falls die Voraussetzungen stimmen
+            if (get(autoConnect) && get(targetDeviceId) === dev.id && !get(isConnected) && !get(isConnecting)) {
+                console.debug("Auto-Connect: Gerät in Reichweite, starte Verbindung.");
+                await connectBuzzer(dev);
+            }
         });
 
         try {
-            // Auch hier vorher prüfen
             if (typeof dev.watchAdvertisements === 'function') {
                 await dev.watchAdvertisements();
             }
@@ -201,22 +204,17 @@ export async function forgetDevice(targetDevice: BluetoothDevice) {
 export async function getPairedDevices() {
     let rawDevices: BluetoothDevice[] = [];
 
-    // 1. Physische Geräte abrufen, falls die API verfügbar ist
     if ('bluetooth' in navigator && 'getDevices' in navigator.bluetooth) {
         try {
             rawDevices = await navigator.bluetooth.getDevices();
         } catch (error) {
             console.error("Fehler beim Abrufen der gekoppelten Geräte:", error);
         }
+        console.log("Bluetooth-Devices", rawDevices);
     }
 
-    // 2. Physische Geräte in den Store schreiben
     pairedDevices.set(rawDevices);
 
-    // 3. Testdaten anfügen
-    injectDummyDevices();
-
-    // 4. Den aktualisierten Store-Inhalt (inkl. Dummies) für die weiterverarbeitenden Funktionen zurückgeben
     return get(pairedDevices);
 }
 
@@ -226,7 +224,7 @@ function handleDisconnect() {
     if (get(isConnected)) {
         addToast("Verbindung zu Buzzer verloren", "warning");
     }
-
+    writeQueue = Promise.resolve();
     resetRemote();
     registerTransport(null);
     rxCharacteristic = null;
@@ -240,8 +238,15 @@ function handleIncomingData(event: Event) {
     }
 }
 
-export async function sendBleFrame(buffer: ArrayBuffer) {
+export function sendBleFrame(buffer: ArrayBuffer): Promise<void> {
     // TODO: MTU Check einfügen!
-    if (!rxCharacteristic) return;
+    if (!rxCharacteristic) return Promise.resolve();
-    await rxCharacteristic.writeValueWithoutResponse(buffer);
+
+    writeQueue = writeQueue.then(() => 
+        rxCharacteristic!.writeValueWithoutResponse(buffer)
+    ).catch(error => {
+        console.error("BLE Sende-Fehler:", error);
+    });
+
+    return writeQueue;
 }

webpage/src/lib/protocol/crc32.ts

@@ -0,0 +1,16 @@
+const CRC32_TABLE = new Int32Array(256);
+for (let i = 0; i < 256; i++) {
+    let c = i;
+    for (let j = 0; j < 8; j++) {
+        c = (c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1);
+    }
+    CRC32_TABLE[i] = c;
+}
+
+export function crc32(buffer: Uint8Array, previousCrc = 0): number {
+    let crc = previousCrc ^ -1;
+    for (let i = 0; i < buffer.length; i++) {
+        crc = (crc >>> 8) ^ CRC32_TABLE[(crc ^ buffer[i]) & 0xFF];
+    }
+    return (crc ^ -1) >>> 0; // Rückgabe als unsigned 32-bit
+}

webpage/src/lib/protocol/parser.ts

@@ -1,6 +1,11 @@
 import { FRAME, DATA, ZEPHYR_ERRORS } from './constants';
-import { protocolInfo, fsInfo } from '../store';
+import { protocolInfo, fsInfo, transferStats, resetTransferStats, transferDetails } from '../store';
 import { addToast } from '../toast';
+import { SETTINGS } from '../settings';
+import { crc32 } from './crc32';
+
+let lastUiUpdate = 0;
+let currentFileCrc32 = 0;
 
 export type FrameSender = (buffer: ArrayBuffer) => Promise<void>;
 
@@ -90,12 +95,25 @@ export function parseIncomingFrame(view: DataView, sender: FrameSender) {
             break;
 
 case FRAME.FILE_START:
-            fileTransfer.totalBytes = view.getUint32(3, true);
+            currentFileCrc32 = 0;
+            const totalBytes = view.getUint32(3, true);
+            const nowStart = performance.now();
+
+            transferStats.update(s => ({
+                ...s,
+                bytesTotal: totalBytes,
+                bytesDone: 0,
+                currentFileName: s.pendingFileName || s.currentFileName,
+                fileStartTime: nowStart,
+                bulkStartTime: s.bulkStartTime === 0 ? nowStart : s.bulkStartTime
+            }));
+
+            // Parser-interne Metriken (Watchdog etc.)
+            fileTransfer.totalBytes = totalBytes;
             fileTransfer.receivedBytes = 0;
-            fileTransfer.lastReceivedBytes = 0;
-            fileTransfer.stalledSeconds = 0;
             fileTransfer.active = true;
-            fileTransfer.startTime = performance.now();
+            fileTransfer.startTime = nowStart;
+            lastUiUpdate = 0;
 
             console.log(`[FILE_GET] Stream gestartet. Erwartete Größe: ${fileTransfer.totalBytes} Bytes.`);
 
@@ -112,8 +130,7 @@ case FRAME.FILE_START:
                         if (fileTransfer.metricsTimer) clearInterval(fileTransfer.metricsTimer);
                         fileTransfer.active = false;
 
-                        // Hier optional einen Toast anzeigen lassen, falls importiert:
+                        addToast("Dateitransfer abgebrochen (Timeout)", "error");
-                        // addToast("Dateitransfer abgebrochen (Timeout)", "error");
 
                         if (fileGetReject) {
                             fileGetReject(new Error("Timeout beim Dateitransfer"));
@@ -123,18 +140,9 @@ case FRAME.FILE_START:
                         return;
                     }
                 } else {
-                    // Daten fließen -> Watchdog zurücksetzen
                     fileTransfer.stalledSeconds = 0;
                     fileTransfer.lastReceivedBytes = fileTransfer.receivedBytes;
                 }
-
-                const elapsedSec = (performance.now() - fileTransfer.startTime) / 1000;
-                const speedKB = (fileTransfer.receivedBytes / 1024) / elapsedSec;
-                const percent = fileTransfer.totalBytes > 0 
-                    ? ((fileTransfer.receivedBytes / fileTransfer.totalBytes) * 100).toFixed(1) 
-                    : "0.0";
-                    
-                console.log(`[FILE_GET] Fortschritt: ${percent}% | Speed: ${speedKB.toFixed(2)} KB/s`);
             }, 1000);
 
             // Initiale Credits (z.B. 64)
@@ -145,32 +153,61 @@ case FRAME.FILE_START:
         case FRAME.FILE_CHUNK:
             if (!fileTransfer.active) break;
 
+            const chunkData = new Uint8Array(view.buffer, 3, payloadLength);
+            currentFileCrc32 = crc32(chunkData, currentFileCrc32);
+
+            const previousReceived = fileTransfer.receivedBytes;
             fileTransfer.receivedBytes += payloadLength;
             fileTransfer.credits--;
 
-            // Nachladen, sobald die Credits auf 32 fallen (Dein Vorschlag)
+            const nowChunk = performance.now();
+            if (nowChunk - lastUiUpdate > SETTINGS.ui.transferUpdateIntervalMs) {
+                const delta = fileTransfer.receivedBytes - previousReceived; // Das Delta seit dem letzten Paket
+
+                transferStats.update(s => ({
+                    ...s,
+                    bytesDone: fileTransfer.receivedBytes,
+                    overallDone: s.overallDone + (fileTransfer.receivedBytes - s.bytesDone)
+                }));
+                console.log("[FILE_GET] Fortschritt: " + ((fileTransfer.receivedBytes / fileTransfer.totalBytes) * 100).toFixed(2) + "%");
+                lastUiUpdate = nowChunk;
+            }
+
             if (fileTransfer.credits <= 64) {
                 fileTransfer.credits = 128;
                 sendCredits(fileTransfer.credits, sender);
-
             }
             break;
 
         case FRAME.FILE_END:
-            if (fileTransfer.metricsTimer) {
+            transferStats.update(s => {
-                clearInterval(fileTransfer.metricsTimer);
+                return {
-                fileTransfer.metricsTimer = null;
+                    ...s,
-            }
+                    bytesDone: s.bytesTotal,
+                };
+            });
+            // Watchdog stoppen
+            if (fileTransfer.metricsTimer) clearInterval(fileTransfer.metricsTimer);
             fileTransfer.active = false;
+            const buzzerCrc32 = view.getUint32(3, true);
 
-            const crc32 = view.getUint32(3, true);
+            console.log(`[CRC] Lokal: 0x${currentFileCrc32.toString(16).toUpperCase()}`);
+            console.log(`[CRC] Buzzer: 0x${buzzerCrc32.toString(16).toUpperCase()}`);
             const totalElapsed = (performance.now() - fileTransfer.startTime) / 1000;
             const avgSpeed = (fileTransfer.receivedBytes / 1024) / totalElapsed;
 
             console.log(`[FILE_GET] Stream beendet.`);
             console.log(`[FILE_GET] Empfangen: ${fileTransfer.receivedBytes} Bytes in ${totalElapsed.toFixed(2)}s.`);
             console.log(`[FILE_GET] Durchschnitt: ${avgSpeed.toFixed(2)} KB/s`);
-            console.log(`[FILE_GET] Zephyr CRC32: 0x${crc32.toString(16).toUpperCase().padStart(8, '0')}`);
+
+            if (currentFileCrc32 === buzzerCrc32) {
+                console.log("%c[CRC] Match! Datei ist integer.", "color: green; font-weight: bold;");
+            } else {
+                console.error("[CRC] Mismatch! Datei beschädigt.");
+                addToast("CRC Fehler: Datei wurde fehlerhaft übertragen.", "error");
+                if (fileGetReject) fileGetReject(new Error("CRC Mismatch"));
+                break;
+            }
 
             if (fileGetResolve) {
                 fileGetResolve(true);
@@ -281,8 +318,8 @@ const fileTransfer = {
     startTime: 0,
     totalBytes: 0,
     receivedBytes: 0,
-    lastReceivedBytes: 0, // NEU: Für die Timeout-Berechnung
+    lastReceivedBytes: 0,
-    stalledSeconds: 0,    // NEU: Zähler für Stillstand
+    stalledSeconds: 0,
     credits: 0,
     metricsTimer: null as ReturnType<typeof setInterval> | null
 };

webpage/src/lib/settings.ts

@@ -6,6 +6,9 @@ export const SETTINGS = {
         connectionTimeoutMs: 10000 // Timeout für den Verbindungsaufbau
     },
     ui: {
-        toastDurationMs: 5000
+        toastDurationMs: 5000,
+        transferUpdateIntervalMs: 100,
+        kbpsCalculationWindowMs: 10000,
+        transferOverlayPersistMs: 4000,
     }
 };

webpage/src/lib/store.ts

@@ -1,5 +1,8 @@
 import { writable, derived } from 'svelte/store';
 import type { BuzzerFile } from './types';
+import { SETTINGS } from './settings';
+
+const CONNECTION_STATE_KEY = 'buzzer_connection_state';
 
 // Fallback-Typ fuer Build-Umgebungen ohne DOM-Library.
 interface BluetoothDevice {
@@ -46,8 +49,6 @@ export interface StorageUsage {
     freePercent: number;
 }
 
-const CONNECTION_STATE_KEY = 'buzzer_connection_state';
-
 // App-Status: Initialisierung und Feature-Support
 export const isInitializing = writable<boolean>(true);
 export const isBluetoothSupported = writable<boolean | null>(null);
@@ -120,46 +121,66 @@ export const storageUsage = derived(
     },
 );
 
-// Nur für Entwicklungszwecke: lokale Dummy-Geräte für UI-Tests
+// Für die Anzeige der Transferdetails (Dateiname, Fortschritt, Geschwindigkeit, ETA)
-export function injectDummyDevices(): void {
+export const transferStats = writable({
-    const dummy1 = {
+    currentFileName: '',
-        id: 'dummy-1',
+    pendingFileName: '',
-        name: 'Dev Buzzer (Erreichbar)',
+    bytesDone: 0,
-        forget: async () => {
+    bytesTotal: 0,
-            console.log('Forget dummy-1');
+    overallDone: 0,
-        },
+    overallTotal: 0,
-        addEventListener: () => {},
+    bulkStartTime: 0,
-        removeEventListener: () => {},
+    fileStartTime: 0
-        watchAdvertisements: async () => {},
+});
-        gatt: { connected: false, disconnect: () => {} },
-    } as unknown as BluetoothDevice;
 
-    const dummy2 = {
+export const resetTransferStats = () => {
-        id: 'dummy-2',
+    transferStats.set({
-        name: 'Dev Buzzer (Offline)',
+        currentFileName: '',
-        forget: async () => {
+        pendingFileName: '',
-            console.log('Forget dummy-2');
+        bytesDone: 0,
-        },
+        bytesTotal: 0,
-        addEventListener: () => {},
+        overallDone: 0,
-        removeEventListener: () => {},
+        overallTotal: 0,
-        watchAdvertisements: async () => {},
+        bulkStartTime: 0,
-        gatt: { connected: false, disconnect: () => {} },
+        fileStartTime: 0
-    } as unknown as BluetoothDevice;
+    });
+};
 
-    pairedDevices.update((devices) => {
+let speedHistory: { bytes: number, time: number }[] = [];
-        if (!devices.find((d) => d.id === 'dummy-1')) {
+
-            return [...devices, dummy1, dummy2];
+export const transferDetails = derived(transferStats, ($s) => {
+    const now = performance.now();
+    
+    if ($s.overallTotal === 0) {
+        speedHistory = [];
+        return { filePercent: 0, totalPercent: 0, speedKbs: 0, fileEta: Infinity, totalEta: Infinity };
     }
-        return devices;
-    });
 
-    availableDevices.update((set) => {
+    speedHistory.push({ bytes: $s.overallDone, time: now });
-        const newSet = new Set(set);
+    speedHistory = speedHistory.filter(p => now - p.time < SETTINGS.ui.kbpsCalculationWindowMs);
-        newSet.add('dummy-1');
-        return newSet;
-    });
-}
 
+    let speedKbs = 0;
+    if (speedHistory.length > 1) {
+        const first = speedHistory[0];
+        const last = speedHistory[speedHistory.length - 1];
+        const timeDiff = (last.time - first.time) / 1000;
+        const bytesDiff = last.bytes - first.bytes;
+        if (timeDiff > 0) speedKbs = (bytesDiff / 1024) / timeDiff;
+    }
+
+    const speedBytesPerSec = speedKbs * 1024;
+
+    return {
+        filePercent: Math.round(($s.bytesTotal > 0 ? $s.bytesDone / $s.bytesTotal : 0) * 100),
+        totalPercent: Math.round(($s.overallTotal > 0 ? $s.overallDone / $s.overallTotal : 0) * 100),
+        speedKbs: parseFloat(speedKbs.toFixed(2)),
+        // Wenn Speed zu gering, direkt Infinity für das ∞ Symbol
+        fileEta: speedBytesPerSec > 100 ? ($s.bytesTotal - $s.bytesDone) / speedBytesPerSec : Infinity,
+        totalEta: speedBytesPerSec > 100 ? ($s.overallTotal - $s.overallDone) / speedBytesPerSec : Infinity
+    };
+});
+
+// Reset-Funktionen für verschiedene Anwendungsfälle
 export function resetRemote(): void {
     isConnected.set(false);
     isConnecting.set(false);
@@ -169,6 +190,7 @@ export function resetRemote(): void {
     buzzerAudioFiles.set([]);
     buzzerSysFiles.set([]);
     isFetchingRemote.set(false);
+    resetTransferStats();
 }
 
 export function resetLocal(): void {
@@ -180,3 +202,26 @@ export function resetAll(): void {
     resetRemote();
     resetLocal();
 }
+
+// Initialisierung aus dem bestehenden LocalStorage-Eintrag
+const initialState = loadConnectionState();
+export const autoConnect = writable<boolean>(initialState?.autoConnect ?? true);
+
+// Automatische Speicherung bei Änderungen
+autoConnect.subscribe(value => {
+    // Verhindert Fehler beim serverseitigen Rendern (Astro)
+    if (typeof window !== 'undefined') {
+        const currentState = loadConnectionState() || { transport: 'ble', deviceId: '', autoConnect: true };
+        saveConnectionState({ ...currentState, autoConnect: value });
+    }
+});
+
+// Abgeleitete Stores für die Anzahl der ausgewählten Dateien und der Dateien
+export const buzzerFilesCount = derived(
+    buzzerAudioFiles,
+    ($files) => $files.length
+);
+export const selectedBuzzerFilesCount = derived(
+    buzzerAudioFiles,
+    ($files) => $files.filter(f => f.selected).length
+);

webpage/src/lib/sync.ts

@@ -1,7 +1,9 @@
 import { get } from 'svelte/store';
-import { isConnected, fsInfo, buzzerAudioFiles, buzzerSysFiles, isFetchingRemote, isFetchingLocal, storageUsage} from './store';
+import { isConnected, fsInfo, buzzerAudioFiles, buzzerSysFiles, isFetchingRemote, isFetchingLocal, storageUsage, transferDetails, transferStats } from './store';
 import { requestProtocolInfo, requestFSInfo, fetchDirectory } from './transport';
 import type { BuzzerFile } from './types';
+import { getFile } from './transport';
+import { addToast } from './toast';
 
 function mapToBuzzerFile(rawFile: any): BuzzerFile {
     return {
@@ -10,7 +12,8 @@ function mapToBuzzerFile(rawFile: any): BuzzerFile {
         type: rawFile.type,
         tagsLoaded: false,
         sysTags: { format: null, crc32: null },
-        metaTags: {}
+        metaTags: {},
+        selected: false,
     };
 }
 
@@ -57,3 +60,53 @@ export async function refreshLocal() {
         isFetchingLocal.set(false);
     }
 }
+
+export async function downloadSelectedFiles() {
+    const files = get(buzzerAudioFiles).filter(f => f.selected);
+    const pathPrefix = get(fsInfo)?.audioPath || "/lfs/a";
+
+    if (files.length === 0) {
+        addToast("Keine Dateien zum Herunterladen ausgewählt.", "warning");
+        return;
+    }
+
+    const totalBytes = files.reduce((sum, f) => sum + f.size, 0);
+    const bulkStart = performance.now(); // Startzeitpunkt exakt erfassen
+
+    transferStats.update(s => ({
+        ...s,
+        overallTotal: totalBytes,
+        overallDone: 0,
+        bulkStartTime: bulkStart
+    }));
+
+    isFetchingRemote.set(true);
+
+    try {
+for (const file of files) {
+            console.log(`Starte Download von: ${file.name}`);
+
+            transferStats.update(s => ({ ...s, pendingFileName: file.name }));
+            
+            const fullPath = `${pathPrefix}/${file.name}`;
+            await new Promise(r => setTimeout(r, 10)); 
+            await getFile(fullPath);
+        }
+
+        // Echte Durchschnittsgeschwindigkeit für den gesamten Bulk-Transfer berechnen
+        const totalTimeSec = (performance.now() - bulkStart) / 1000;
+        const avgSpeedKbs = ((totalBytes / 1024) / totalTimeSec).toFixed(1);
+
+        addToast(`${files.length} ${files.length === 1 ? "Datei" : "Dateien"} erfolgreich heruntergeladen. (${avgSpeedKbs} kB/s)`, "success");
+    } catch (error) {
+        console.error("Bulk-Download Fehler:", error);
+        addToast("Download abgebrochen: " + (error instanceof Error ? error.message : "Unbekannter Fehler"), "error");
+    } finally {
+        transferStats.update(s => ({
+            ...s,
+            overallDone: s.overallTotal, // Schließt den Ladebalken visuell sauber ab
+        }));
+        // Das console.log für den Live-Speed wurde entfernt, da es hier falsche Werte liefert
+        isFetchingRemote.set(false);
+    }
+}

webpage/src/lib/transport.ts

@@ -70,7 +70,7 @@ export function handleTransportDisconnect() {
 
 let isFileTransferring = false;
 
-export async function fetchFileThroughputTest(path: string): Promise<boolean> {
+export async function getFile(path: string): Promise<boolean> {
     if (isFileTransferring) {
         throw new Error("Ein Dateitransfer läuft bereits.");
     }

webpage/src/lib/types.ts

@@ -26,4 +26,5 @@ export interface BuzzerFile {
     tagsLoaded: boolean; 
     sysTags: SystemTags;
     metaTags: MetadataTags;
+    selected: boolean;
 }

webpage/src/pages/index.astro

@@ -1,41 +1,13 @@
+<!-- index.astro -->
 ---
-import MainLayout from "../layouts/MainLayout.astro";
-import BuzzerControl from "../components/BuzzerControl.svelte";
-import BLEList from "../components/BLEList.svelte";
 import AppGuard from "../components/AppGuard.svelte";
-import FlashUsage from "../components/FlashUsage.svelte";
+import MainLayout from "../layouts/MainLayout.astro";
+import Header from "../components/Header.svelte";
+import MainGrid from "../components/MainGrid.svelte";
 ---
-
 <MainLayout>
     <AppGuard client:load>
-        <div class="max-w-4xl mx-auto mt-4">
+        <Header client:load/>
-            <header class="mb-12 text-center">
+        <MainGrid client:load/>
-                <h1 class="text-3xl md:text-4xl font-extrabold text-slate-800 tracking-tight mb-3">
-                    Buzzer Management
-                </h1>
-                <p class="text-slate-500 text-lg max-w-2xl mx-auto">
-                    Verbinde dich mit dem nRF52840 Buzzer, um Audio-Dateien zu übertragen und
-                    Systemparameter auszulesen.
-                </p>
-            </header>
-
-            <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
-                <div>
-                    <BuzzerControl client:load />
-                </div>
-
-                <div>
-                    <BLEList client:load />
-                </div>
-            </div>
-          <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
-                <div>
-                    <FlashUsage client:load />
-                </div>
-
-                <div>
-                </div>
-            </div>
-        </div>
     </AppGuard>
 </MainLayout>

webpage/src/styles/app.css

@@ -0,0 +1,73 @@
+/* app.css */
+@import "tailwindcss";
+@slot base;
+@slot components;
+@slot utilities;
+
+@theme {
+  --color-surface: var(--color-slate-50);
+  --color-on-surface: var(--color-slate-900);
+  --color-light-on-surface: var(--color-slate-700);
+  --color-accent: var(--color-blue-600);
+  --color-accent-bg: var(--color-blue-50);
+  --color-accent-hover: var(--color-blue-100);
+  --color-accent-border-separator: var(--color-blue-200);
+
+  --color-surface-card: var(--color-white);
+  --color-surface-hover: var(--color-slate-100);
+
+  --color-border-card: var(--color-slate-200);
+  --color-border-separator: var(--color-slate-100);
+
+  --color-text-muted: var(--color-slate-400);
+
+  --color-border-selected: var(--color-blue-500);
+  --color-bg-selected: var(--color-blue-50);
+  --color-bg-selected-hover: var(--color-blue-200);
+}
+
+@layer base {
+  body {
+    @apply bg-surface text-on-surface;
+  }
+}
+
+@layer components {
+  .main-layout {
+    @apply grid grid-cols-1 lg:grid-cols-2 gap-0 lg:gap-6 p-0 lg:p-6 w-full max-w-7xl mx-auto;
+  }
+
+  
+  .disconnected {
+    @apply grayscale opacity-30 blur-[1px];
+  }
+
+  .buzzer-card {
+    @apply bg-surface-card border-border-card transition-all duration-300;
+    @apply border-b lg:border lg:rounded-xl lg:shadow-sm overflow-hidden;
+  }
+
+  .card-header {
+    @apply px-3 py-2 flex justify-between items-center bg-gradient-to-b from-white to-slate-100 border-b border-border-card h-12;
+  }
+
+  .card-title {
+    @apply font-light font-features-['smcp'] tracking-tight;
+  }
+
+  /* .card-body {
+    @apply;
+  } */
+
+  .buzzer-card .icon {
+    @apply w-7 h-7 p-1;
+  }
+
+  .card-header .btn {
+    @apply border rounded border-transparent hover:bg-slate-200 hover:border-border-card hover:shadow-sm;
+  }
+  
+  .text-2xs {
+    @apply text-[0.625rem];
+  }
+}