diff --git a/server/src/index.ts b/server/src/index.ts
index 8eadd55..ba3c9b8 100644
--- a/server/src/index.ts
+++ b/server/src/index.ts
@@ -174,12 +174,14 @@ app.get('/api/channels', (_req: Request, res: Response) => {
 
 app.post('/api/play', async (req: Request, res: Response) => {
   try {
-    const { soundName, guildId, channelId } = req.body as {
+    const { soundName, guildId, channelId, volume } = req.body as {
       soundName?: string;
       guildId?: string;
       channelId?: string;
+      volume?: number; // 0..1
     };
     if (!soundName || !guildId || !channelId) return res.status(400).json({ error: 'soundName, guildId, channelId erforderlich' });
+    const safeVolume = typeof volume === 'number' && Number.isFinite(volume) ? Math.max(0, Math.min(1, volume)) : 1;
 
     const filePath = path.join(SOUNDS_DIR, `${soundName}.mp3`);
     if (!fs.existsSync(filePath)) return res.status(404).json({ error: 'Sound nicht gefunden' });
@@ -266,7 +268,11 @@ app.post('/api/play', async (req: Request, res: Response) => {
     }
 
     console.log(`${new Date().toISOString()} | createAudioResource: ${filePath}`);
-    const resource = createAudioResource(filePath);
+    const resource = createAudioResource(filePath, { inlineVolume: true });
+    if (resource.volume) {
+      resource.volume.setVolume(safeVolume);
+      console.log(`${new Date().toISOString()} | setVolume(${safeVolume}) for ${soundName}`);
+    }
     state.player.stop();
     state.player.play(resource);
     console.log(`${new Date().toISOString()} | player.play() called for ${soundName}`);
diff --git a/web/src/App.tsx b/web/src/App.tsx
index 7a8302e..38caa4d 100644
--- a/web/src/App.tsx
+++ b/web/src/App.tsx
@@ -9,6 +9,7 @@ export default function App() {
   const [selected, setSelected] = useState<string>('');
   const [loading, setLoading] = useState(false);
   const [error, setError] = useState<string | null>(null);
+  const [volume, setVolume] = useState<number>(1);
 
   useEffect(() => {
     (async () => {
@@ -43,7 +44,7 @@ export default function App() {
     const [guildId, channelId] = selected.split(':');
     try {
       setLoading(true);
-      await playSound(name, guildId, channelId);
+      await playSound(name, guildId, channelId, volume);
     } catch (e: any) {
       setError(e?.message || 'Play fehlgeschlagen');
     } finally {
@@ -59,19 +60,35 @@ export default function App() {
       </header>
 
       <section className="controls">
-        <input
-          value={query}
-          onChange={(e) => setQuery(e.target.value)}
-          placeholder="Nach Sounds suchen..."
-          aria-label="Suche"
-        />
-        <select value={selected} onChange={(e) => setSelected(e.target.value)} aria-label="Voice-Channel">
-          {channels.map((c) => (
-            <option key={`${c.guildId}:${c.channelId}`} value={`${c.guildId}:${c.channelId}`}>
-              {c.guildName} – {c.channelName}
-            </option>
-          ))}
-        </select>
+        <div className="control search">
+          <input
+            value={query}
+            onChange={(e) => setQuery(e.target.value)}
+            placeholder="Nach Sounds suchen..."
+            aria-label="Suche"
+          />
+        </div>
+        <div className="control select">
+          <select value={selected} onChange={(e) => setSelected(e.target.value)} aria-label="Voice-Channel">
+            {channels.map((c) => (
+              <option key={`${c.guildId}:${c.channelId}`} value={`${c.guildId}:${c.channelId}`}>
+                {c.guildName} – {c.channelName}
+              </option>
+            ))}
+          </select>
+        </div>
+        <div className="control volume">
+          <label>🔊 {Math.round(volume * 100)}%</label>
+          <input
+            type="range"
+            min={0}
+            max={1}
+            step={0.01}
+            value={volume}
+            onChange={(e) => setVolume(parseFloat(e.target.value))}
+            aria-label="Lautstärke"
+          />
+        </div>
       </section>
 
       {error && <div className="error">{error}</div>}
diff --git a/web/src/api.ts b/web/src/api.ts
index 3a808ea..663def2 100644
--- a/web/src/api.ts
+++ b/web/src/api.ts
@@ -16,11 +16,11 @@ export async function fetchChannels(): Promise<VoiceChannelInfo[]> {
   return res.json();
 }
 
-export async function playSound(soundName: string, guildId: string, channelId: string): Promise<void> {
+export async function playSound(soundName: string, guildId: string, channelId: string, volume: number): Promise<void> {
   const res = await fetch(`${API_BASE}/play`, {
     method: 'POST',
     headers: { 'Content-Type': 'application/json' },
-    body: JSON.stringify({ soundName, guildId, channelId })
+    body: JSON.stringify({ soundName, guildId, channelId, volume })
   });
   if (!res.ok) {
     const data = await res.json().catch(() => ({}));
diff --git a/web/src/styles.css b/web/src/styles.css
index 0321262..ea72064 100644
--- a/web/src/styles.css
+++ b/web/src/styles.css
@@ -1,20 +1,50 @@
-:root { color-scheme: dark light; }
+:root { color-scheme: dark; }
 * { box-sizing: border-box; }
-body { margin: 0; font-family: ui-sans-serif, system-ui, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji"; background: linear-gradient(120deg, #1e3c72, #2a5298); min-height: 100vh; color: #111; }
+body {
+  margin: 0;
+  font-family: ui-sans-serif, system-ui, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
+  background: radial-gradient(1200px 800px at 20% -10%, #2a2f4f 0%, transparent 60%),
+              radial-gradient(1200px 800px at 120% 10%, #4c2a85 0%, transparent 60%),
+              linear-gradient(180deg, #0b1020 0%, #0f1530 100%);
+  min-height: 100vh;
+  color: #e7e7ee;
+}
 
-.container { max-width: 1000px; margin: 0 auto; padding: 24px; }
-header { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
-header h1 { margin: 0; }
+.container { max-width: 1200px; margin: 0 auto; padding: 28px; }
+header { display: flex; flex-direction: column; gap: 8px; margin-bottom: 18px; }
+header h1 { margin: 0; font-weight: 800; letter-spacing: .3px; }
+header p { opacity: .8; }
 
-.controls { display: flex; gap: 12px; margin-bottom: 16px; }
-.controls input { flex: 1; padding: 10px 12px; border-radius: 10px; border: 1px solid rgba(255,255,255,.3); background: rgba(255,255,255,.9); }
-.controls select { padding: 10px 12px; border-radius: 10px; border: 1px solid rgba(255,255,255,.3); background: rgba(255,255,255,.9); }
+.controls { display: grid; grid-template-columns: 1fr minmax(240px, 300px) 220px; gap: 12px; align-items: center; margin-bottom: 18px; }
+.control input, .control select {
+  width: 100%;
+  padding: 12px 14px;
+  border-radius: 12px;
+  border: 1px solid rgba(255,255,255,.12);
+  background: rgba(18, 24, 48, .8);
+  color: #fff;
+}
+.control input::placeholder { color: #c8c8d8; }
 
-.error { background: #ffefef; color: #900; border: 1px solid #fcc; padding: 10px 12px; border-radius: 8px; margin-bottom: 12px; }
+.control.volume { display: grid; grid-template-columns: auto 1fr; gap: 10px; align-items: center; }
+.control.volume label { font-weight: 700; opacity: .9; }
+.control.volume input[type="range"] { accent-color: #8b5cf6; }
 
-.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; }
-.sound { padding: 18px; border-radius: 14px; border: 0; background: linear-gradient(135deg, #ff8a00, #e52e71); color: #fff; cursor: pointer; font-weight: 700; box-shadow: 0 6px 20px rgba(0,0,0,.2); letter-spacing: .2px; }
-.sound:hover { filter: brightness(1.05); }
+.error { background: rgba(255, 99, 99, .12); color: #ffd1d1; border: 1px solid rgba(255, 99, 99, .3); padding: 10px 12px; border-radius: 10px; margin-bottom: 12px; }
+
+.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 14px; }
+.sound {
+  padding: 18px 16px;
+  border-radius: 14px;
+  border: 1px solid rgba(255,255,255,.08);
+  background: linear-gradient(135deg, rgba(88, 28, 135, 0.9), rgba(59, 130, 246, 0.9));
+  color: #fff;
+  cursor: pointer;
+  font-weight: 700;
+  letter-spacing: .2px;
+  box-shadow: 0 10px 30px rgba(0,0,0,.25);
+}
+.sound:hover { filter: brightness(1.06); }
 .sound:disabled { opacity: 0.6; cursor: not-allowed; }
 
 .hint { opacity: .7; padding: 24px 0; }