diff --git a/index.html b/index.html
index 7cb635f..7042998 100644
--- a/index.html
+++ b/index.html
@@ -14,58 +14,65 @@
     .no-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }
   </style>
 </head>
-<body class="bg-white text-gray-900 selection:bg-amber-200/60">
+<body class="bg-white text-gray-900 selection:bg-black/10">
   <div class="flex flex-col h-dvh max-h-dvh">
+    <!-- Header -->
     <header class="sticky top-0 z-10 bg-white/80 backdrop-blur border-b border-gray-200">
       <div class="mx-auto w-full max-w-2xl px-4 py-3 flex items-center justify-between">
         <button id="newChatBtn" class="text-sm font-medium px-3 py-1.5 rounded-xl bg-gray-100 hover:bg-gray-200 active:scale-[.99] transition">New chat</button>
-        <button id="modelBadge" class="text-xs font-medium px-3 py-1.5 rounded-full bg-emerald-50 text-emerald-700 border border-emerald-200 hover:bg-emerald-100 transition">
+        <!-- Model badge (click to change model) -->
+        <button id="modelBadge" class="text-xs font-medium px-3 py-1.5 rounded-full bg-black text-white border border-black hover:bg-black/90 transition">
           <span id="modelName">openai/gpt-4o</span>
         </button>
-        <div class="flex items-center gap-2">
-          <span class="text-[11px] text-gray-400" id="status">offline</span>
-        </div>
+        <!-- API key badge (click to set key); color reflects online/offline -->
+        <button id="apiBadge" title="Set OpenRouter API key" class="h-8 min-w-8 px-3 rounded-full border text-xs font-medium inline-flex items-center justify-center gap-1 transition bg-gray-100 text-gray-700 border-gray-200 hover:bg-gray-200">
+          <!-- Key icon -->
+          <svg viewBox="0 0 24 24" class="h-4 w-4" fill="none" stroke="currentColor" stroke-width="1.8">
+            <path stroke-linecap="round" stroke-linejoin="round" d="M15 7a4 4 0 11-7.999.001A4 4 0 0115 7zm-.293 6.707L9 19.414V22h2.586l5.707-5.707a1 1 0 000-1.414l-1.586-1.586a1 1 0 00-1.414 0z"/>
+          </svg>
+          <span id="statusText" class="sr-only">offline</span>
+        </button>
       </div>
-    </header><main id="chat" class="flex-1 overflow-y-auto no-scrollbar">
+    </header><!-- Messages -->
+<main id="chat" class="flex-1 overflow-y-auto no-scrollbar">
   <div id="messages" class="mx-auto w-full max-w-2xl px-4 py-4 sm:py-6 space-y-4">
     <div class="flex gap-3">
-      <div class="shrink-0 h-8 w-8 rounded-full bg-emerald-100 text-emerald-700 flex items-center justify-center">🤖</div>
+      <div class="shrink-0 h-8 w-8 rounded-full bg-gray-200 text-gray-900 flex items-center justify-center">🤖</div>
       <div class="bg-gray-100 rounded-2xl px-4 py-3 text-[15px] leading-relaxed">
         <div class="font-semibold text-gray-800 mb-1">Hello!</div>
-        I’m a lightweight ChatGPT-style demo. Type below to chat. Set an OpenRouter API key (bottom-left) to go online; otherwise I’ll reply locally.
+        I’m a lightweight ChatGPT-style demo. Click the key badge to set an OpenRouter API key; otherwise I’ll reply locally. Enter adds a newline.
       </div>
     </div>
   </div>
   <div class="h-24"></div>
 </main>
 
+<!-- Input Dock -->
 <footer class="sticky bottom-0 bg-gradient-to-t from-white via-white/95 to-white/40 pt-3 pb-[calc(12px+var(--safe-bottom))] border-t border-gray-200">
   <div class="mx-auto w-full max-w-2xl px-4">
     <form id="composer" class="group relative flex items-end gap-2">
-      <textarea id="input" rows="1" placeholder="Send a message" spellcheck="true" class="flex-1 resize-none rounded-2xl border border-gray-300 bg-white px-4 py-3 text-[15px] leading-6 placeholder:text-gray-400 focus:outline-none focus:ring-2 focus:ring-amber-300/80 focus:border-gray-300 max-h-40"></textarea>
-      <button id="sendBtn" type="submit" aria-label="Send" class="shrink-0 rounded-2xl bg-amber-500 text-white h-10 w-10 inline-flex items-center justify-center shadow-sm hover:bg-amber-600 active:scale-[.98] transition disabled:opacity-40 disabled:cursor-not-allowed">
-        <svg viewBox="0 0 24 24" class="h-5 w-5" fill="none" stroke="currentColor" stroke-width="1.8"><path stroke-linecap="round" stroke-linejoin="round" d="M5 12h14M12 5l7 7-7 7"/></svg>
+      <textarea id="input" rows="1" placeholder="Send a message" spellcheck="true"
+        class="flex-1 resize-none rounded-2xl border border-gray-300 bg-white px-4 py-3 text-[15px] leading-6 placeholder:text-gray-400 focus:outline-none focus:ring-2 focus:ring-black/20 focus:border-gray-300 max-h-40"></textarea>
+      <button id="sendBtn" type="submit" aria-label="Send"
+        class="shrink-0 rounded-2xl bg-black text-white h-10 w-10 inline-flex items-center justify-center shadow-sm hover:bg-black/90 active:scale-[.98] transition disabled:opacity-40 disabled:cursor-not-allowed">
+        <svg viewBox="0 0 24 24" class="h-5 w-5" fill="none" stroke="currentColor" stroke-width="1.8">
+          <path stroke-linecap="round" stroke-linejoin="round" d="M5 12h14M12 5l7 7-7 7"/>
+        </svg>
       </button>
     </form>
     <div class="mt-2 flex items-center justify-between text-xs text-gray-500">
       <div class="flex items-center gap-1.5">
-        <kbd class="px-1.5 py-0.5 rounded border bg-gray-50">Enter</kbd> to send • <kbd class="px-1.5 py-0.5 rounded border bg-gray-50">Shift</kbd>+<kbd class="px-1.5 py-0.5 rounded border bg-gray-50">Enter</kbd> for newline
+        <span>Enter</span> for newline
       </div>
       <button id="clearBtn" class="underline decoration-dotted hover:text-gray-700">Clear</button>
     </div>
   </div>
 </footer>
 
-<div class="fixed bottom-[calc(68px+var(--safe-bottom))] left-3 flex flex-col gap-2">
-  <button id="setApiBtn" title="Set OpenRouter API key" class="h-10 w-10 rounded-full bg-gray-100 border border-gray-200 shadow-sm hover:bg-gray-200 active:scale-[.98] transition flex items-center justify-center">
-    <svg viewBox="0 0 24 24" class="h-5 w-5 text-gray-700" fill="none" stroke="currentColor" stroke-width="1.6">
-      <path stroke-linecap="round" stroke-linejoin="round" d="M15.75 6.75a3.75 3.75 0 11-7.5 0 3.75 3.75 0 017.5 0z"/>
-      <path stroke-linecap="round" stroke-linejoin="round" d="M4.5 20.25a8.25 8.25 0 0115 0"/>
-    </svg>
-  </button>
-</div>
+<!-- Bottom-left controls removed (no longer needed) -->
 
   </div>  <script>
+    // === Elements ===
     const el = {
       chat: document.getElementById('chat'),
       messages: document.getElementById('messages'),
@@ -74,12 +81,13 @@
       sendBtn: document.getElementById('sendBtn'),
       clearBtn: document.getElementById('clearBtn'),
       newChatBtn: document.getElementById('newChatBtn'),
-      status: document.getElementById('status'),
       modelName: document.getElementById('modelName'),
       modelBadge: document.getElementById('modelBadge'),
-      setApiBtn: document.getElementById('setApiBtn'),
+      apiBadge: document.getElementById('apiBadge'),
+      statusText: document.getElementById('statusText'),
     };
 
+    // === Local storage ===
     const store = {
       get apiKey() { return localStorage.getItem('openrouter_api_key') || ''; },
       set apiKey(v) { localStorage.setItem('openrouter_api_key', v || ''); updateStatus(); },
@@ -87,16 +95,18 @@
       set model(v) { localStorage.setItem('openrouter_model', v || 'openai/gpt-4o'); el.modelName.textContent = store.model; },
     };
 
+    // === Runtime state ===
     const state = { messages: [], busy: false, controller: null };
 
+    // === UI helpers ===
     function addMessage(role, content) {
       const row = document.createElement('div');
       row.className = 'flex gap-3';
       const avatar = document.createElement('div');
-      avatar.className = 'shrink-0 h-8 w-8 rounded-full flex items-center justify-center ' + (role === 'user' ? 'bg-blue-100 text-blue-700' : 'bg-emerald-100 text-emerald-700');
+      avatar.className = 'shrink-0 h-8 w-8 rounded-full flex items-center justify-center ' + (role === 'user' ? 'bg-gray-900 text-white' : 'bg-gray-200 text-gray-900');
       avatar.textContent = role === 'user' ? '🧑' : '🤖';
       const bubble = document.createElement('div');
-      bubble.className = 'rounded-2xl px-4 py-3 text-[15px] leading-relaxed whitespace-pre-wrap ' + (role === 'user' ? 'bg-blue-50 border border-blue-100' : 'bg-gray-100');
+      bubble.className = 'rounded-2xl px-4 py-3 text-[15px] leading-relaxed whitespace-pre-wrap ' + (role === 'user' ? 'bg-gray-50 border border-gray-200' : 'bg-gray-100');
       bubble.textContent = content;
       row.appendChild(avatar);
       row.appendChild(bubble);
@@ -110,7 +120,7 @@
       const row = document.createElement('div');
       row.className = 'flex gap-3';
       const avatar = document.createElement('div');
-      avatar.className = 'shrink-0 h-8 w-8 rounded-full flex items-center justify-center bg-emerald-100 text-emerald-700';
+      avatar.className = 'shrink-0 h-8 w-8 rounded-full flex items-center justify-center bg-gray-200 text-gray-900';
       avatar.textContent = '🤖';
       const bubble = document.createElement('div');
       bubble.className = 'rounded-2xl px-4 py-3 text-[15px] leading-relaxed bg-gray-100 text-gray-700';
@@ -128,17 +138,21 @@
       if (intro) {
         const introRow = document.createElement('div');
         introRow.className = 'flex gap-3';
-        introRow.innerHTML = `<div class="shrink-0 h-8 w-8 rounded-full bg-emerald-100 text-emerald-700 flex items-center justify-center">🤖</div><div class="bg-gray-100 rounded-2xl px-4 py-3 text-[15px] leading-relaxed"><div class="font-semibold text-gray-800 mb-1">New chat</div>You're in a fresh conversation. Ask away.</div>`;
+        introRow.innerHTML = `<div class="shrink-0 h-8 w-8 rounded-full bg-gray-200 text-gray-900 flex items-center justify-center">🤖</div><div class="bg-gray-100 rounded-2xl px-4 py-3 text-[15px] leading-relaxed"><div class="font-semibold text-gray-800 mb-1">New chat</div>You're in a fresh conversation. Ask away.</div>`;
         el.messages.appendChild(introRow);
       }
     }
 
     function updateStatus() {
       const online = !!store.apiKey;
-      el.status.textContent = online ? 'online' : 'offline';
-      el.status.className = 'text-[11px] ' + (online ? 'text-emerald-600' : 'text-gray-400');
+      // Toggle badge colors
+      el.apiBadge.className = 'h-8 min-w-8 px-3 rounded-full border text-xs font-medium inline-flex items-center justify-center gap-1 transition ' + (online
+        ? 'bg-black text-white border-black hover:bg-black/90'
+        : 'bg-gray-100 text-gray-700 border-gray-200 hover:bg-gray-200');
+      el.statusText.textContent = online ? 'online' : 'offline';
     }
 
+    // === Networking ===
     async function askOpenRouter() {
       const apiKey = store.apiKey;
       const model = store.model;
@@ -160,18 +174,21 @@
       } catch (e) {
         console.error(e);
         return { ok: false, text: 'Request failed. Using local demo instead.\n\n' + localDemoReply(state.messages[state.messages.length - 1]?.content || '') };
-      } finally {
-        state.controller = null;
-      }
+      } finally { state.controller = null; }
     }
 
     function localDemoReply(prompt) {
-      const tips = [ 'Tip: set an OpenRouter API key (bottom-left) to go truly online.', 'Pro move: click the model badge to change model.', 'New chats are stateless here—no history is kept.' ];
+      const tips = [
+        'Tip: click the key badge to set your OpenRouter API key.',
+        'Model is clickable at the top—tap the model badge to change it.',
+        'New chats are stateless here—no history is kept.'
+      ];
       const tip = tips[Math.floor(Math.random() * tips.length)];
       const mirrored = prompt.split(/\s+/).slice(0, 24).join(' ');
       return `Local demo mode. You said: "${mirrored}"\n\n${tip}`;
     }
 
+    // === Events ===
     el.composer.addEventListener('submit', async (e) => {
       e.preventDefault();
       if (state.busy) return;
@@ -179,47 +196,52 @@
       if (!text) return;
       el.input.value = '';
       el.input.style.height = 'auto';
+
       addMessage('user', text);
       state.busy = true;
       el.sendBtn.disabled = true;
       const thinking = addThinkingBubble();
+
       const res = await askOpenRouter();
       thinking.textContent = res.text;
       thinking.className = 'rounded-2xl px-4 py-3 text-[15px] leading-relaxed bg-gray-100 text-gray-800 whitespace-pre-wrap';
       state.messages[state.messages.length - 1] = { role: 'assistant', content: res.text };
+
       el.sendBtn.disabled = false;
       state.busy = false;
       queueMicrotask(() => el.chat.scrollTo({ top: el.chat.scrollHeight, behavior: 'smooth' }));
     });
 
+    // Auto-resize textarea
     el.input.addEventListener('input', () => {
       el.input.style.height = 'auto';
       const h = Math.min(el.input.scrollHeight, 160);
       el.input.style.height = h + 'px';
     });
 
-    el.input.addEventListener('keydown', (e) => {
-      if (e.key === 'Enter' && !e.shiftKey) {
-        e.preventDefault();
-        el.composer.requestSubmit();
-      }
-    });
+    // Do NOT send on Enter — Enter inserts newline by default; no keydown override here.
 
+    // Clear / New
     el.clearBtn.addEventListener('click', () => clearChat(false));
     el.newChatBtn.addEventListener('click', () => clearChat(true));
-    el.setApiBtn.addEventListener('click', () => {
-      const current = store.apiKey ? '********' : '';
-      const input = prompt('Enter OpenRouter API key (stored locally):', current);
-      if (input === null) return;
-      store.apiKey = input === '********' ? store.apiKey : (input.trim());
-      alert(store.apiKey ? 'API key saved locally.' : 'API key cleared.');
-    });
+
+    // Model badge click
     el.modelBadge.addEventListener('click', () => {
       const input = prompt('Enter model name (e.g., openai/gpt-4o):', store.model);
       if (input === null) return;
       store.model = input.trim() || 'openai/gpt-4o';
     });
 
+    // API badge click
+    el.apiBadge.addEventListener('click', () => {
+      const currentMasked = store.apiKey ? '********' : '';
+      const input = prompt('Enter OpenRouter API key (stored locally):', currentMasked);
+      if (input === null) return;
+      store.apiKey = input === '********' ? store.apiKey : (input.trim());
+      alert(store.apiKey ? 'API key saved locally.' : 'API key cleared.');
+    });
+
+    // Init
     updateStatus();
     el.modelName.textContent = store.model;
   </script></body>
