diff --git a/dashboard/frontend/src/routes/Terminal.svelte b/dashboard/frontend/src/routes/Terminal.svelte
index 7ce5211..54b3722 100644
--- a/dashboard/frontend/src/routes/Terminal.svelte
+++ b/dashboard/frontend/src/routes/Terminal.svelte
@@ -1,5 +1,5 @@
 <script>
-  import { onDestroy } from "svelte";
+  import { onMount, onDestroy } from "svelte";
   import { VoiceSession } from "../lib/voice.js";
 
   const hosts = [
@@ -10,13 +10,54 @@
     { id: "claude-dev", label: "Claude Dev" },
   ];
 
+  const DARK_THEME = {
+    background: "#0f172a", foreground: "#e2e8f0", cursor: "#6366f1",
+    cursorAccent: "#0f172a", selectionBackground: "#334155",
+    black: "#0f172a", red: "#f43f5e", green: "#10b981",
+    yellow: "#f59e0b", blue: "#3b82f6", magenta: "#a855f7",
+    cyan: "#06b6d4", white: "#e2e8f0",
+  };
+
+  const LIGHT_THEME = {
+    background: "#f8fafc", foreground: "#0f172a", cursor: "#4f46e5",
+    cursorAccent: "#f8fafc", selectionBackground: "#cbd5e1",
+    black: "#0f172a", red: "#e11d48", green: "#059669",
+    yellow: "#d97706", blue: "#2563eb", magenta: "#9333ea",
+    cyan: "#0891b2", white: "#334155",
+  };
+
   let tabs = $state([]);
   let activeTab = $state(null);
   let showMenu = $state(false);
   let voiceTick = $state(0);
+  let isDark = $state(false);
   let tabCounter = 0;
   const tabData = new Map();
 
+  function currentTheme() {
+    return isDark ? DARK_THEME : LIGHT_THEME;
+  }
+
+  function applyThemeToTerminals() {
+    const theme = currentTheme();
+    tabData.forEach((d) => {
+      d.term?.options && (d.term.options.theme = theme);
+    });
+  }
+
+  function syncTheme() {
+    isDark = document.documentElement.classList.contains("dark");
+    applyThemeToTerminals();
+  }
+
+  const themeObserver = new MutationObserver((mutations) => {
+    if (mutations.some((m) => m.attributeName === "class")) syncTheme();
+  });
+  onMount(() => {
+    syncTheme();
+    themeObserver.observe(document.documentElement, { attributes: true, attributeFilter: ["class"] });
+  });
+
   function cleanName(name) {
     return (name || "image")
       .replace(/[^a-zA-Z0-9._-]/g, "-")
@@ -106,13 +147,7 @@
         cursorBlink: true, fontSize: 13,
         fontFamily: "'JetBrains Mono', 'Fira Code', 'SF Mono', 'Menlo', monospace",
         lineHeight: 1.4,
-        theme: {
-          background: "#0f172a", foreground: "#e2e8f0", cursor: "#6366f1",
-          cursorAccent: "#0f172a", selectionBackground: "#334155",
-          black: "#0f172a", red: "#f43f5e", green: "#10b981",
-          yellow: "#f59e0b", blue: "#3b82f6", magenta: "#a855f7",
-          cyan: "#06b6d4", white: "#e2e8f0",
-        },
+        theme: currentTheme(),
       });
       const fit = new FitAddon();
       term.loadAddon(fit);
@@ -182,25 +217,28 @@
 
   function activeVoice() { return voiceTick >= 0 && tabData.get(activeTab)?.voice; }
 
-  onDestroy(() => tabData.forEach((d) => {
-    d.voice?.destroy();
-    d.ro?.disconnect();
-    d.term?.element?.removeEventListener("dragover", d.handleDragOver);
-    d.term?.element?.removeEventListener("drop", d.handleDrop);
-    d.term?.textarea?.removeEventListener("paste", d.handlePaste);
-    d.ws?.close();
-    d.term?.dispose();
-  }));
+  onDestroy(() => {
+    themeObserver.disconnect();
+    tabData.forEach((d) => {
+      d.voice?.destroy();
+      d.ro?.disconnect();
+      d.term?.element?.removeEventListener("dragover", d.handleDragOver);
+      d.term?.element?.removeEventListener("drop", d.handleDrop);
+      d.term?.textarea?.removeEventListener("paste", d.handlePaste);
+      d.ws?.close();
+      d.term?.dispose();
+    });
+  });
 </script>
 <div class={activeVoice()?.voiceMode ? 'flex flex-col h-[calc(100vh-4rem)] overflow-hidden gap-1' : 'space-y-2'}>
   {#if !activeVoice()?.voiceMode}
-    <h1 class="text-2xl font-bold text-surface-900 tracking-tight">Terminal</h1>
+    <h1 class="text-2xl font-bold text-surface-900 dark:text-surface-100 tracking-tight">Terminal</h1>
   {/if}
 
-  <div class="flex items-center gap-1 border-b border-surface-700 pb-1 relative">
+  <div class="flex items-center gap-1 border-b border-surface-300 dark:border-surface-700 pb-1 relative">
     {#each tabs as tab (tab.id)}
       <button
-        class="flex items-center gap-1.5 px-3 py-1.5 text-sm rounded-t-lg transition-colors {activeTab === tab.id ? 'bg-surface-800 text-surface-100' : 'text-surface-400 hover:text-surface-200 hover:bg-surface-800/50'}"
+        class="flex items-center gap-1.5 px-3 py-1.5 text-sm rounded-t-lg transition-colors {activeTab === tab.id ? 'bg-surface-200 dark:bg-surface-800 text-surface-900 dark:text-surface-100' : 'text-surface-600 dark:text-surface-400 hover:text-surface-800 dark:hover:text-surface-200 hover:bg-surface-100 dark:hover:bg-surface-800/50'}"
         onclick={() => activeTab = tab.id}
       >
         {#if tab.connected}
@@ -222,14 +260,14 @@
     {/each}
     <div class="relative">
       <button
-        class="px-2 py-1 text-surface-400 hover:text-surface-100 hover:bg-surface-800 rounded text-lg leading-none"
+        class="px-2 py-1 text-surface-600 dark:text-surface-400 hover:text-surface-900 dark:hover:text-surface-100 hover:bg-surface-200 dark:hover:bg-surface-800 rounded text-lg leading-none"
         onclick={() => showMenu = !showMenu}
       >+</button>
       {#if showMenu}
-        <div class="absolute top-full left-0 mt-1 bg-surface-800 border border-surface-600 rounded-lg shadow-xl z-10 py-1 min-w-[140px]">
+        <div class="absolute top-full left-0 mt-1 bg-surface-100 dark:bg-surface-800 border border-surface-300 dark:border-surface-600 rounded-lg shadow-xl z-10 py-1 min-w-[140px]">
           {#each hosts as h}
             <button
-              class="block w-full text-left px-3 py-1.5 text-sm text-surface-200 hover:bg-surface-700"
+              class="block w-full text-left px-3 py-1.5 text-sm text-surface-800 dark:text-surface-200 hover:bg-surface-200 dark:hover:bg-surface-700"
               onclick={() => addTab(h.id)}
             >{h.label}</button>
           {/each}
@@ -240,7 +278,7 @@
       {@const v = activeVoice()}
       <div class="ml-auto">
         <button
-          class="px-2 py-1 rounded text-sm transition-colors {v.voiceMode ? 'text-rose-400' : v.sttAvailable ? 'text-surface-500 hover:text-surface-300' : 'text-surface-700 cursor-not-allowed'}"
+          class="px-2 py-1 rounded text-sm transition-colors {v.voiceMode ? 'text-rose-400' : v.sttAvailable ? 'text-surface-600 dark:text-surface-500 hover:text-surface-800 dark:hover:text-surface-300' : 'text-surface-300 dark:text-surface-700 cursor-not-allowed'}"
           title={!v.sttAvailable ? 'STT not supported' : v.voiceMode ? 'Voice mode on' : 'Enter voice mode'}
           disabled={!v.sttAvailable}
           onclick={() => { if (!v.voiceMode) v.enterVoiceMode(); else v.exitVoiceMode(); voiceTick++; }}
@@ -251,12 +289,12 @@
     {/if}
   </div>
 
-  <p class="text-xs text-surface-500">
-    Tip: drag & drop or paste images into the active terminal tab to upload them to <code class="text-surface-400">/tmp/claude-images</code>.
+  <p class="text-xs text-surface-600 dark:text-surface-500">
+    Tip: drag & drop or paste images into the active terminal tab to upload them to <code class="text-surface-700 dark:text-surface-400">/tmp/claude-images</code>.
   </p>
 
   {#if !tabs.length}
-    <div class="flex items-center justify-center h-[calc(100vh-12rem)] text-surface-500 text-sm">
+    <div class="flex items-center justify-center h-[calc(100vh-12rem)] text-surface-600 dark:text-surface-500 text-sm">
       Click + to open a terminal
     </div>
   {/if}
@@ -265,21 +303,21 @@
     <div class="{activeTab === tab.id ? '' : 'hidden'} {activeVoice()?.voiceMode ? 'flex-1 min-h-0' : ''}">
       <div
         use:initTerminal={tab}
-        class="h-full rounded-xl overflow-hidden shadow-lg border border-surface-700 transition-all duration-300"
-        style="background: #0f172a; {activeVoice()?.voiceMode ? '' : 'height: calc(100vh - 10rem);'}"
+        class="h-full rounded-xl overflow-hidden shadow-lg border border-surface-300 dark:border-surface-700 bg-surface-50 dark:bg-[#0f172a] transition-all duration-300"
+        style="{activeVoice()?.voiceMode ? '' : 'height: calc(100vh - 10rem);'}"
       ></div>
     </div>
   {/each}
 
   {#if activeVoice()?.voiceMode}
     {@const v = activeVoice()}
-    <div class="mt-1 shrink-0 rounded-xl bg-surface-800/95 border border-surface-700 shadow-xl overflow-hidden animate-slide-up">
+    <div class="mt-1 shrink-0 rounded-xl bg-surface-100/95 dark:bg-surface-800/95 border border-surface-300 dark:border-surface-700 shadow-xl overflow-hidden animate-slide-up">
       <!-- Header -->
-      <div class="flex items-center justify-between px-3 py-1.5 border-b border-surface-700/50">
-        <span class="text-xs font-medium text-surface-300">Voice Mode</span>
+      <div class="flex items-center justify-between px-3 py-1.5 border-b border-surface-300/50 dark:border-surface-700/50">
+        <span class="text-xs font-medium text-surface-700 dark:text-surface-300">Voice Mode</span>
         <div class="flex items-center gap-2">
           <select
-            class="bg-surface-700 text-surface-300 text-xs rounded px-1 py-0.5 outline-none max-w-[120px]"
+            class="bg-surface-200 dark:bg-surface-700 text-surface-800 dark:text-surface-300 text-xs rounded px-1 py-0.5 outline-none max-w-[120px]"
             onchange={(e) => { v.setVoice(+e.target.value); voiceTick++; }}
           >
             {#each v.voices as voice, i}
@@ -287,11 +325,11 @@
             {/each}
           </select>
           <button
-            class="px-1.5 py-0.5 rounded text-xs font-medium text-surface-400 hover:text-surface-200 hover:bg-surface-700"
+            class="px-1.5 py-0.5 rounded text-xs font-medium text-surface-600 dark:text-surface-400 hover:text-surface-800 dark:hover:text-surface-200 hover:bg-surface-200 dark:hover:bg-surface-700"
             onclick={() => { v.cycleLang(); voiceTick++; }}
           >{v.langLabel}</button>
           <button
-            class="px-1.5 py-0.5 rounded text-xs font-medium text-surface-400 hover:text-surface-200 hover:bg-surface-700"
+            class="px-1.5 py-0.5 rounded text-xs font-medium text-surface-600 dark:text-surface-400 hover:text-surface-800 dark:hover:text-surface-200 hover:bg-surface-200 dark:hover:bg-surface-700"
             onclick={() => { v.cycleTalkMode(); voiceTick++; }}
           >{v.modeLabel}</button>
           <button
@@ -305,7 +343,7 @@
         {#if v.talkMode === "hold"}
           <button
             aria-label="Hold to talk"
-            class="w-10 h-10 shrink-0 rounded-full flex items-center justify-center transition-colors {v.listening ? 'bg-rose-500/30 text-rose-400' : 'bg-surface-700 text-surface-300 hover:bg-surface-600'}"
+            class="w-10 h-10 shrink-0 rounded-full flex items-center justify-center transition-colors {v.listening ? 'bg-rose-500/30 text-rose-400' : 'bg-surface-200 dark:bg-surface-700 text-surface-700 dark:text-surface-300 hover:bg-surface-300 dark:hover:bg-surface-600'}"
             onpointerdown={() => { v.startHold(); voiceTick++; }}
             onpointerup={() => { v.releaseHold(); voiceTick++; }}
             onpointerleave={() => { if (v.listening) { v.releaseHold(); voiceTick++; } }}
@@ -315,21 +353,21 @@
         {:else if v.talkMode === "tap"}
           <button
             aria-label="Tap to talk"
-            class="w-10 h-10 shrink-0 rounded-full flex items-center justify-center transition-colors {v.listening ? 'bg-rose-500/30 text-rose-400' : 'bg-surface-700 text-surface-300 hover:bg-surface-600'}"
+            class="w-10 h-10 shrink-0 rounded-full flex items-center justify-center transition-colors {v.listening ? 'bg-rose-500/30 text-rose-400' : 'bg-surface-200 dark:bg-surface-700 text-surface-700 dark:text-surface-300 hover:bg-surface-300 dark:hover:bg-surface-600'}"
             onclick={() => { v.tapMic(); voiceTick++; }}
           >
             <svg class="w-5 h-5" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M12 1a3 3 0 00-3 3v8a3 3 0 006 0V4a3 3 0 00-3-3z"/><path d="M19 10v2a7 7 0 01-14 0v-2"/><line x1="12" y1="19" x2="12" y2="23"/><line x1="8" y1="23" x2="16" y2="23"/></svg>
           </button>
         {:else}
-          <div class="w-10 h-10 shrink-0 rounded-full flex items-center justify-center {v.listening ? 'bg-emerald-500/20 text-emerald-400 animate-pulse' : 'bg-surface-700 text-surface-500'}">
+          <div class="w-10 h-10 shrink-0 rounded-full flex items-center justify-center {v.listening ? 'bg-emerald-500/20 text-emerald-400 animate-pulse' : 'bg-surface-200 dark:bg-surface-700 text-surface-500'}">
             <svg class="w-5 h-5" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M12 1a3 3 0 00-3 3v8a3 3 0 006 0V4a3 3 0 00-3-3z"/><path d="M19 10v2a7 7 0 01-14 0v-2"/><line x1="12" y1="19" x2="12" y2="23"/><line x1="8" y1="23" x2="16" y2="23"/></svg>
           </div>
         {/if}
         <div class="flex-1 min-w-0">
           {#if v.transcript}
-            <p class="text-sm text-surface-400 italic truncate">"{v.transcript}"</p>
+            <p class="text-sm text-surface-600 dark:text-surface-400 italic truncate">"{v.transcript}"</p>
           {:else}
-            <p class="text-xs text-surface-600">{v.speaking ? 'Speaking...' : v.listening ? 'Listening...' : 'Ready'}</p>
+            <p class="text-xs text-surface-500 dark:text-surface-600">{v.speaking ? 'Speaking...' : v.listening ? 'Listening...' : 'Ready'}</p>
           {/if}
         </div>
       </div>