queue panel shares layer with main content, no longer an overlay

frontend/index.css

@@ -112,8 +112,15 @@ body div.sidebar {
     }
 }
 
-.main-panel {
+.content-area {
     grid-area: main-panel;
+    display: flex;
+    overflow: hidden;
+}
+
+.main-panel {
+    flex: 1;
+    min-width: 0;
     padding: 0.25em;
     background-color: #212529;
     overflow: hidden;

frontend/index.html

@@ -22,9 +22,12 @@
     <div class="sidebar">
         <app-sidebar></app-sidebar>
     </div>
-    <main class="main-panel" id="main-content">
-        <track-list></track-list>
-    </main>
+    <div class="content-area">
+        <main class="main-panel" id="main-content">
+            <track-list></track-list>
+        </main>
+        <queue-panel id="queue-panel"></queue-panel>
+    </div>
     <footer class="bottom-bar">
         <now-playing></now-playing>
         <audio-player></audio-player>
@@ -32,7 +35,6 @@
             <wa-icon name="list"></wa-icon>
         </button>
     </footer>
-    <queue-panel id="queue-panel"></queue-panel>
 </body>
 
 </html>

frontend/src/components/queue-panel/queue-panel.ts

@@ -1,8 +1,12 @@
-import { LitElement, html, css } from 'lit';
-import { customElement, property } from 'lit/decorators.js';
+import { LitElement, html, css, unsafeCSS } from 'lit';
+import { customElement, property, state } from 'lit/decorators.js';
 import '@awesome.me/webawesome/dist/components/icon/icon.js';
 import { QueueController } from '@store/controllers/queue-controller';
 
+const MIN_WIDTH = 200;
+const MAX_WIDTH = 500;
+const DEFAULT_WIDTH = 320;
+
 @customElement('queue-panel')
 export class QueuePanel extends LitElement {
   private queue = new QueueController(this);
@@ -10,26 +14,50 @@ export class QueuePanel extends LitElement {
   @property({ type: Boolean, reflect: true })
   open = false;
 
+  @state()
+  private isDragging = false;
+
+  private panelWidth = DEFAULT_WIDTH;
+
   static override styles = css`
     :host {
-      display: block;
-      position: fixed;
-      top: 4em; /* below header */
-      right: 0;
-      bottom: 4em; /* above footer */
-      width: 320px;
-      background-color: #1a1a2e;
-      border-left: 1px solid #333;
-      transform: translateX(100%);
-      transition: transform 0.25s ease-in-out;
-      z-index: 100;
+      flex-shrink: 0;
+      width: 0;
       overflow: hidden;
+      background-color: #1a1a2e;
+      transition: width 0.25s ease-in-out;
       display: flex;
-      flex-direction: column;
+      flex-direction: row;
     }
 
     :host([open]) {
-      transform: translateX(0);
+      width: var(--queue-width, ${unsafeCSS(DEFAULT_WIDTH)}px);
+      border-left: 1px solid #333;
+    }
+
+    .resize-handle {
+      position: absolute;
+      top: 0;
+      left: 0;
+      width: 4px;
+      height: 100%;
+      cursor: col-resize;
+      background-color: transparent;
+      transition: background-color 0.15s ease;
+      z-index: 10;
+    }
+
+    .resize-handle:hover,
+    .resize-handle.dragging {
+      background-color: #6c757d;
+    }
+
+    .panel-content {
+      position: relative;
+      display: flex;
+      flex-direction: column;
+      min-width: ${unsafeCSS(MIN_WIDTH)}px;
+      flex: 1;
     }
 
     .header {
@@ -160,9 +188,27 @@ export class QueuePanel extends LitElement {
     }
   `;
 
+  override connectedCallback() {
+    super.connectedCallback();
+    this.style.setProperty('--queue-width', `${this.panelWidth}px`);
+    document.addEventListener('mousemove', this.handleMouseMove);
+    document.addEventListener('mouseup', this.handleMouseUp);
+  }
+
+  override disconnectedCallback() {
+    super.disconnectedCallback();
+    document.removeEventListener('mousemove', this.handleMouseMove);
+    document.removeEventListener('mouseup', this.handleMouseUp);
+  }
+
   private handleClose() {
     this.open = false;
-    this.dispatchEvent(new CustomEvent('queue-panel-close', { bubbles: true, composed: true }));
+    this.dispatchEvent(
+      new CustomEvent('queue-panel-close', {
+        bubbles: true,
+        composed: true,
+      }),
+    );
   }
 
   private handleRemoveTrack(e: Event, position: number) {
@@ -174,7 +220,9 @@ export class QueuePanel extends LitElement {
     this.queue.playAtIndex(index);
   }
 
-  private getDisplayTitle(track: { title: string; filePath: string }): string {
+  private getDisplayTitle(
+    track: { title: string; filePath: string },
+  ): string {
     if (track.title) return track.title;
 
     // Fall back to filename without extension.
@@ -184,49 +232,97 @@ export class QueuePanel extends LitElement {
     return filename.replace(/\.[^.]+$/, '');
   }
 
+  private handleMouseDown = (e: MouseEvent) => {
+    e.preventDefault();
+    this.isDragging = true;
+
+    // Disable transition during drag for instant feedback.
+    this.style.transition = 'none';
+  };
+
+  private handleMouseMove = (e: MouseEvent) => {
+    if (!this.isDragging) return;
+
+    const rect = this.getBoundingClientRect();
+    const newWidth = rect.right - e.clientX;
+    const clampedWidth = Math.min(
+      Math.max(newWidth, MIN_WIDTH),
+      MAX_WIDTH,
+    );
+
+    this.panelWidth = clampedWidth;
+    this.style.setProperty('--queue-width', `${clampedWidth}px`);
+  };
+
+  private handleMouseUp = () => {
+    if (!this.isDragging) return;
+
+    this.isDragging = false;
+
+    // Re-enable transition after drag ends.
+    this.style.removeProperty('transition');
+  };
+
   override render() {
     const tracks = this.queue.tracks;
     const currentIndex = this.queue.currentIndex;
 
     return html`
-      <div class="header">
-        <h3>Queue</h3>
-        <button class="close-button" @click=${this.handleClose}>
-          <wa-icon name="xmark"></wa-icon>
-        </button>
-      </div>
+      <div class="panel-content">
+        <div
+          class="resize-handle ${this.isDragging ? 'dragging' : ''}"
+          @mousedown=${this.handleMouseDown}
+        ></div>
+        <div class="header">
+          <h3>Queue</h3>
+          <button class="close-button" @click=${this.handleClose}>
+            <wa-icon name="xmark"></wa-icon>
+          </button>
+        </div>
 
-      ${tracks.length === 0
-        ? html`
-            <div class="empty-state">
-              <wa-icon name="list"></wa-icon>
-              <p>Queue is empty</p>
-              <p style="font-size: 12px;">Click a track to start playing</p>
-            </div>
-          `
-        : html`
-            <ul class="track-list">
-              ${tracks.map(
-                (track, index) => html`
-                  <li class="track-item ${index === currentIndex ? 'active' : ''}"
-                      @click=${() => this.handleTrackClick(index)}>
-                    <span class="track-position">${index + 1}</span>
-                    <div class="track-details">
-                      <span class="track-title">${this.getDisplayTitle(track)}</span>
-                      <span class="track-artist">${track.artist || 'Unknown Artist'}</span>
-                    </div>
-                    <button
-                      class="remove-button"
-                      @click=${(e: Event) => this.handleRemoveTrack(e, index)}
-                      title="Remove from queue"
+        ${tracks.length === 0
+          ? html`
+              <div class="empty-state">
+                <wa-icon name="list"></wa-icon>
+                <p>Queue is empty</p>
+                <p style="font-size: 12px;">
+                  Click a track to start playing
+                </p>
+              </div>
+            `
+          : html`
+              <ul class="track-list">
+                ${tracks.map(
+                  (track, index) => html`
+                    <li
+                      class="track-item ${index === currentIndex
+                        ? 'active'
+                        : ''}"
+                      @click=${() => this.handleTrackClick(index)}
                     >
-                      <wa-icon name="xmark"></wa-icon>
-                    </button>
-                  </li>
-                `
-              )}
-            </ul>
-          `}
+                      <span class="track-position">${index + 1}</span>
+                      <div class="track-details">
+                        <span class="track-title">
+                          ${this.getDisplayTitle(track)}
+                        </span>
+                        <span class="track-artist">
+                          ${track.artist || 'Unknown Artist'}
+                        </span>
+                      </div>
+                      <button
+                        class="remove-button"
+                        @click=${(e: Event) =>
+                          this.handleRemoveTrack(e, index)}
+                        title="Remove from queue"
+                      >
+                        <wa-icon name="xmark"></wa-icon>
+                      </button>
+                    </li>
+                  `,
+                )}
+              </ul>
+            `}
+      </div>
     `;
   }
 }

frontend/src/components/track-list/track-list.ts

@@ -62,6 +62,10 @@ export class TrackList extends LitElement {
       width: 100%;
     }
 
+    .track-row > * {
+      min-width: 0;
+    }
+
     .track-row:hover {
       background-color: rgba(255, 255, 255, 0.05);
     }