Reduce visualizer latency, tighten UI paddings, fix mobile browser toolbar

- Visualizer: FPS 25→30, chunk_size 2048→1024, smoothing 0.65→0.15
- Beat effect: scale 0.03→0.04, glow range 0.5-0.8→0.4-0.8
- UI: reduce container/section paddings from 2rem to 1rem
- Source name: add ellipsis overflow for long names
- Mobile browser toolbar: use flex-wrap instead of column stack,
  hide "Items per page" label text on small screens

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

media_server/static/css/styles.css

@@ -144,7 +144,7 @@ body.dialog-open {
 .container {
     max-width: 800px;
     margin: 0 auto;
-    padding: 2rem 2rem 0.5rem;
+    padding: 0.75rem 0.75rem 0.5rem;
 }
 
 header {
@@ -498,7 +498,7 @@ h1 {
 .player-container {
     background: var(--bg-secondary);
     border-radius: 12px;
-    padding: 2rem;
+    padding: 1rem;
     box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
 }
 
@@ -936,12 +936,18 @@ button:disabled {
     align-items: center;
     justify-content: center;
     gap: 0.75rem;
+    min-width: 0;
 }
 
 .source-label {
     display: inline-flex;
     align-items: center;
     gap: 0.35rem;
+    min-width: 0;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+    max-width: 200px;
 }
 
 .source-icon {
@@ -998,7 +1004,7 @@ button:disabled {
 .scripts-container {
     background: var(--bg-secondary);
     border-radius: 12px;
-    padding: 2rem;
+    padding: 1rem;
     box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
 }
 
@@ -1131,7 +1137,7 @@ button:disabled {
 }
 
 .settings-section summary {
-    padding: 1rem 1.5rem;
+    padding: 1rem;
     font-size: 1rem;
     font-weight: 600;
     color: var(--text-primary);
@@ -1169,7 +1175,7 @@ button:disabled {
 }
 
 .settings-section-content {
-    padding: 0 1.5rem 1.5rem;
+    padding: 0 1rem 1rem;
     overflow-x: auto;
 }
 
@@ -1282,7 +1288,7 @@ button:disabled {
         .display-container {
             background: var(--bg-secondary);
             border-radius: 12px;
-            padding: 2rem;
+            padding: 1rem;
             box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
         }
 
@@ -2218,7 +2224,7 @@ button.primary svg {
 
 @media (max-width: 600px) {
     .container {
-        padding: 1rem;
+        padding: 0.5rem;
     }
 
     #album-art {
@@ -2289,7 +2295,7 @@ footer .separator {
 .browser-container {
     background: var(--bg-secondary);
     border-radius: 12px;
-    padding: 2rem;
+    padding: 1rem;
     box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
 }
 
@@ -3006,16 +3012,26 @@ footer .separator {
     }
 
     .browser-toolbar {
-        flex-direction: column;
-        align-items: stretch;
+        flex-wrap: wrap;
+        gap: 0.5rem;
+    }
+
+    .browser-toolbar-left {
+        gap: 0.35rem;
     }
 
     .browser-search-wrapper {
         max-width: none;
+        flex-basis: 100%;
+        order: 10;
     }
 
     .browser-toolbar-right {
-        justify-content: flex-end;
+        margin-left: auto;
+    }
+
+    .items-per-page-label span {
+        display: none;
     }
 
     .browser-list-item {