feat(inspector): improve contrast and add collapsible debug panel (#182)

frontend/packages/inspector/index.html

@@ -14,16 +14,17 @@
         color-scheme: dark;
         /* Match landing page colors - high contrast */
         --bg: #000000;
-        --surface: rgba(255, 255, 255, 0.04);
+        --bg-panel: #0a0a0b;
-        --surface-2: rgba(255, 255, 255, 0.02);
+        --surface: rgba(255, 255, 255, 0.06);
-        --border: rgba(255, 255, 255, 0.15);
+        --surface-2: rgba(255, 255, 255, 0.03);
-        --border-2: rgba(255, 255, 255, 0.12);
+        --border: rgba(255, 255, 255, 0.18);
-        --input-bg: rgba(255, 255, 255, 0.05);
+        --border-2: rgba(255, 255, 255, 0.14);
-        --input-border: rgba(255, 255, 255, 0.18);
+        --input-bg: rgba(255, 255, 255, 0.07);
+        --input-border: rgba(255, 255, 255, 0.22);
         --text: #ffffff;
-        --text-secondary: #d4d4d8; /* zinc-300 */
+        --text-secondary: #e4e4e7; /* zinc-200 */
         --muted: #a1a1aa; /* zinc-400 */
-        --muted-2: #71717a; /* zinc-500 */
+        --muted-2: #8b8b93; /* between zinc-400 and zinc-500 */
         --accent: #ff4f00;
         --accent-hover: #ff6a00;
         --success: #4ade80; /* green-400 */
@@ -87,7 +88,7 @@
         justify-content: space-between;
         padding: 12px 20px;
         border-bottom: 1px solid var(--border);
-        background: var(--bg);
+        background: var(--bg-panel);
         flex-shrink: 0;
       }
 
@@ -476,6 +477,11 @@
         grid-template-columns: 200px 1fr 1fr;
         flex: 1;
         overflow: hidden;
+        transition: grid-template-columns 0.2s ease;
+      }
+
+      .main-layout.debug-collapsed {
+        grid-template-columns: 200px 1fr 42px;
       }
 
       /* Session Sidebar */
@@ -483,7 +489,7 @@
         display: flex;
         flex-direction: column;
         border-right: 1px solid var(--border);
-        background: var(--bg);
+        background: var(--bg-panel);
         overflow: visible;
       }
 
@@ -1234,7 +1240,7 @@
         height: 41px;
         padding: 0 16px;
         border-bottom: 1px solid var(--border);
-        background: var(--bg);
+        background: var(--bg-panel);
         flex-shrink: 0;
         display: flex;
         align-items: center;
@@ -2455,13 +2461,14 @@
         display: flex;
         flex-direction: column;
         overflow: hidden;
+        background: var(--bg-panel);
       }
 
       .debug-tabs {
         display: flex;
         height: 41px;
         border-bottom: 1px solid var(--border);
-        background: var(--bg);
+        background: var(--bg-panel);
         flex-shrink: 0;
         overflow-x: auto;
       }
@@ -2513,6 +2520,49 @@
         padding: 16px;
       }
 
+      .debug-panel.collapsed .debug-content {
+        display: none;
+      }
+
+      .debug-panel.collapsed .debug-tabs {
+        flex-direction: column;
+        height: auto;
+        border-bottom: none;
+        overflow: visible;
+      }
+
+      .debug-panel.collapsed .debug-tab {
+        display: none;
+      }
+
+      .debug-collapse-btn {
+        width: 28px;
+        height: 28px;
+        min-width: 28px;
+        margin: 6px;
+        padding: 0;
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        background: transparent;
+        border: 1px solid var(--border);
+        border-radius: var(--radius-sm);
+        color: var(--muted);
+        cursor: pointer;
+        transition: color var(--transition), border-color var(--transition), background var(--transition);
+        flex-shrink: 0;
+      }
+
+      .debug-collapse-btn:hover {
+        color: var(--text);
+        border-color: var(--text-secondary);
+        background: var(--surface);
+      }
+
+      .debug-panel.collapsed .debug-collapse-btn {
+        margin: 6px auto;
+      }
+
       /* Session Setup */
       .setup-grid {
         display: grid;
@@ -2637,19 +2687,19 @@
       }
 
       .event-item {
-        background: var(--surface);
+        background: rgba(255, 255, 255, 0.02);
-        border: 1px solid var(--border);
+        border: 1px solid rgba(255, 255, 255, 0.08);
         border-radius: var(--radius);
         overflow: hidden;
         transition: border-color var(--transition);
       }
 
       .event-item:hover {
-        border-color: rgba(255, 255, 255, 0.2);
+        border-color: rgba(255, 255, 255, 0.12);
       }
 
       .event-item.expanded {
-        border-color: rgba(255, 255, 255, 0.2);
+        border-color: rgba(255, 255, 255, 0.12);
       }
 
       .event-item.highlighted {
@@ -2684,9 +2734,9 @@
         width: 28px;
         height: 28px;
         border-radius: 8px;
-        border: 1px solid var(--border-2);
+        border: 1px solid rgba(255, 255, 255, 0.06);
-        background: rgba(255, 255, 255, 0.04);
+        background: rgba(255, 255, 255, 0.02);
-        color: var(--text-secondary);
+        color: var(--muted);
         flex-shrink: 0;
       }
 

frontend/packages/inspector/src/App.tsx

@@ -288,6 +288,7 @@ export default function App() {
 
   const [debugTab, setDebugTab] = useState<DebugTab>("events");
   const [highlightedEventId, setHighlightedEventId] = useState<string | null>(null);
+  const [debugPanelCollapsed, setDebugPanelCollapsed] = useState(false);
 
   const messagesEndRef = useRef<HTMLDivElement>(null);
 
@@ -1614,7 +1615,7 @@ export default function App() {
         </div>
       </header>
 
-      <main className="main-layout">
+      <main className={`main-layout ${debugPanelCollapsed ? "debug-collapsed" : ""}`}>
         <SessionSidebar
           sessions={sessions}
           selectedSessionId={sessionId}
@@ -1704,6 +1705,8 @@ export default function App() {
           agentsLoading={agentsLoading}
           agentsError={agentsError}
           getClient={getClient}
+          collapsed={debugPanelCollapsed}
+          onToggleCollapse={() => setDebugPanelCollapsed(!debugPanelCollapsed)}
         />
       </main>
       {toastStack}

frontend/packages/inspector/src/components/debug/DebugPanel.tsx

@@ -1,4 +1,4 @@
-import { Cloud, PlayCircle, Server, Terminal, Wrench } from "lucide-react";
+import { ChevronLeft, ChevronRight, Cloud, PlayCircle, Server, Terminal, Wrench } from "lucide-react";
 import type { AgentInfo, SandboxAgent, SessionEvent } from "sandbox-agent";
 
 type AgentModeInfo = { id: string; name: string; description: string };
@@ -30,6 +30,8 @@ const DebugPanel = ({
   agentsLoading,
   agentsError,
   getClient,
+  collapsed,
+  onToggleCollapse,
 }: {
   debugTab: DebugTab;
   onDebugTabChange: (tab: DebugTab) => void;
@@ -49,10 +51,19 @@ const DebugPanel = ({
   agentsLoading: boolean;
   agentsError: string | null;
   getClient: () => SandboxAgent;
+  collapsed?: boolean;
+  onToggleCollapse?: () => void;
 }) => {
   return (
-    <div className="debug-panel">
+    <div className={`debug-panel ${collapsed ? "collapsed" : ""}`}>
       <div className="debug-tabs">
+        <button
+          className="debug-collapse-btn"
+          onClick={onToggleCollapse}
+          title={collapsed ? "Expand panel" : "Collapse panel"}
+        >
+          {collapsed ? <ChevronLeft size={14} /> : <ChevronRight size={14} />}
+        </button>
         <button className={`debug-tab ${debugTab === "events" ? "active" : ""}`} onClick={() => onDebugTabChange("events")}>
           <PlayCircle className="button-icon" style={{ marginRight: 4, width: 12, height: 12 }} />
           Events

frontend/packages/website/src/components/Hero.tsx

@@ -23,7 +23,7 @@ function UniversalAPIDiagram() {
   }, []);
 
   return (
-    <div className="relative w-full aspect-[16/9] bg-[#050505] rounded-2xl border border-white/10 overflow-hidden flex items-center justify-center shadow-2xl">
+    <div className="relative w-full aspect-[4/3] sm:aspect-[16/9] bg-[#050505] rounded-2xl border border-white/10 overflow-hidden flex items-center justify-center shadow-2xl">
       {/* Background Dots - color changes with active adapter */}
       <div
         className="absolute inset-0 opacity-[0.15] pointer-events-none transition-all duration-1000"