feat: add Listening Mode overlay with voice picker, speed, sleep timer, and chapter list

Adds a full-screen listening mode accessible via the headphones button in the
mini-player bar. Moves voice selector, speed, auto-next, and sleep timer out of
the reader settings panel into the new overlay. Voices are stored in AudioStore
so ListeningMode can read them without prop drilling.

ui/src/lib/audio.svelte.ts

@@ -32,6 +32,8 @@
  * It only runs once per chapter (guarded by nextStatus !== 'none').
  */
 
+import type { Voice } from '$lib/types';
+
 export type AudioStatus = 'idle' | 'loading' | 'generating' | 'ready' | 'error';
 export type NextStatus = 'none' | 'prefetching' | 'prefetched' | 'failed';
 
@@ -50,6 +52,9 @@ class AudioStore {
 	/** Full chapter list for the currently loaded book (number + title). */
 	chapters = $state<{ number: number; title: string }[]>([]);
 
+	/** Available voices (populated by the chapter AudioPlayer on mount). */
+	voices = $state<Voice[]>([]);
+
 	// ── Loading/generation state ────────────────────────────────────────────
 	status = $state<AudioStatus>('idle');
 	audioUrl = $state('');

ui/src/lib/components/AudioPlayer.svelte

@@ -226,6 +226,11 @@
 		audioStore.nextChapter = nextChapter ?? null;
 	});
 
+	// Keep voices in store up to date whenever prop changes.
+	$effect(() => {
+		if (voices.length > 0) audioStore.voices = voices;
+	});
+
 	// Auto-start: if the layout navigated here via auto-next, kick off playback.
 	// We match against the chapter prop so the outgoing chapter's AudioPlayer
 	// (still mounted during the brief navigation window) never reacts to this.
@@ -530,6 +535,7 @@
 		audioStore.bookTitle = bookTitle;
 		audioStore.cover = cover;
 		audioStore.chapters = chapters;
+		if (voices.length > 0) audioStore.voices = voices;
 
 		// Update OS media session (lock screen / notification center).
 		setMediaSession();
@@ -1102,72 +1108,7 @@
 						{formatTime(audioStore.currentTime)} / {formatTime(audioStore.duration)}
 					</span>
 				</div>
-
-				<!-- Auto-next toggle (keep here as useful context) -->
-				{#if nextChapter !== null && nextChapter !== undefined}
-					<Button
-						variant="ghost"
-						size="sm"
-						class={cn('gap-1.5 text-xs flex-shrink-0', audioStore.autoNext ? 'text-(--color-brand) bg-(--color-brand)/15 hover:bg-(--color-brand)/25' : 'text-(--color-muted)')}
-				onclick={() => (audioStore.autoNext = !audioStore.autoNext)}
-					title={audioStore.autoNext ? m.player_auto_next_on() : m.player_auto_next_off()}
-					aria-pressed={audioStore.autoNext}
-				>
-					<svg class="w-3.5 h-3.5" fill="currentColor" viewBox="0 0 24 24">
-						<path d="M6 18l8.5-6L6 6v12zm8.5-6L23 6v12l-8.5-6z"/>
-					</svg>
-					{m.reader_auto_next()}
-				</Button>
-				{/if}
-
-				<!-- Sleep timer -->
-				<Button
-					variant="ghost"
-					size="sm"
-					class={cn('gap-1 text-xs flex-shrink-0', audioStore.sleepUntil || audioStore.sleepAfterChapter ? 'text-(--color-brand) bg-(--color-brand)/15 hover:bg-(--color-brand)/25' : 'text-(--color-muted)')}
-					onclick={cycleSleepTimer}
-					title={audioStore.sleepAfterChapter
-						? 'Stop after this chapter'
-						: audioStore.sleepUntil
-							? `Sleep timer: ${formatSleepRemaining(sleepRemainingSec)} remaining`
-							: 'Sleep timer off'}
-				>
-					<svg class="w-3.5 h-3.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-						<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M20.354 15.354A9 9 0 018.646 3.646 9.003 9.003 0 0012 21a9.003 9.003 0 008.354-5.646z"/>
-					</svg>
-					{#if audioStore.sleepAfterChapter}
-						End Ch.
-					{:else if audioStore.sleepUntil}
-						{formatSleepRemaining(sleepRemainingSec)}
-					{:else}
-						Sleep
-					{/if}
-				</Button>
 			</div>
-
-			<!-- Next chapter pre-fetch status (only when auto-next is on) -->
-			{#if audioStore.autoNext && nextChapter !== null && nextChapter !== undefined}
-				<div class="mt-2">
-			{#if audioStore.nextStatus === 'prefetching'}
-				<div class="flex items-center gap-2 text-xs text-(--color-muted)">
-					<svg class="w-3 h-3 animate-spin flex-shrink-0" fill="none" viewBox="0 0 24 24">
-						<circle class="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" stroke-width="4"></circle>
-						<path class="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4z"></path>
-					</svg>
-					<span>{m.reader_ch_preparing({ n: String(nextChapter), percent: String(Math.round(audioStore.nextProgress)) })}</span>
-				</div>
-			{:else if audioStore.nextStatus === 'prefetched'}
-				<p class="text-xs text-(--color-muted) flex items-center gap-1">
-					<svg class="w-3 h-3 text-(--color-brand) flex-shrink-0" fill="currentColor" viewBox="0 0 24 24">
-						<path d="M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41L9 16.17z"/>
-					</svg>
-					{m.reader_ch_ready({ n: String(nextChapter) })}
-				</p>
-			{:else if audioStore.nextStatus === 'failed'}
-				<p class="text-xs text-(--color-muted) opacity-60">{m.reader_ch_generate_on_nav({ n: String(nextChapter) })}</p>
-			{/if}
-				</div>
-			{/if}
 		{/if}
 
 	{:else if audioStore.active}

ui/src/lib/components/ListeningMode.svelte

@@ -0,0 +1,451 @@
+<script lang="ts">
+	import { audioStore } from '$lib/audio.svelte';
+	import { cn } from '$lib/utils';
+	import type { Voice } from '$lib/types';
+
+	interface Props {
+		/** Called when the user closes the overlay. */
+		onclose: () => void;
+	}
+
+	let { onclose }: Props = $props();
+
+	// Voices come from the store (populated by AudioPlayer on mount/play)
+	const voices = $derived(audioStore.voices);
+	const kokoroVoices = $derived(voices.filter((v) => v.engine === 'kokoro'));
+	const pocketVoices = $derived(voices.filter((v) => v.engine === 'pocket-tts'));
+	const cfaiVoices   = $derived(voices.filter((v) => v.engine === 'cfai'));
+
+	let showVoicePanel = $state(false);
+	let samplePlayingVoice = $state<string | null>(null);
+	let sampleAudio: HTMLAudioElement | null = null;
+
+	function voiceLabel(v: Voice | string): string {
+		if (typeof v === 'string') {
+			const found = voices.find((x) => x.id === v);
+			if (found) return voiceLabel(found);
+			const id = v as string;
+			return id.replace(/_/g, ' ').replace(/\b\w/g, (c) => c.toUpperCase());
+		}
+		const base = v.id.replace(/_/g, ' ').replace(/\b\w/g, (c) => c.toUpperCase());
+		return v.lang !== 'en-us' ? `${base} (${v.lang})` : base;
+	}
+
+	function stopSample() {
+		if (sampleAudio) {
+			sampleAudio.pause();
+			sampleAudio.src = '';
+			sampleAudio = null;
+		}
+		samplePlayingVoice = null;
+	}
+
+	async function playSample(voiceId: string) {
+		if (samplePlayingVoice === voiceId) { stopSample(); return; }
+		stopSample();
+		samplePlayingVoice = voiceId;
+		try {
+			const res = await fetch(`/api/presign/voice-sample?voice=${encodeURIComponent(voiceId)}`);
+			if (!res.ok) { samplePlayingVoice = null; return; }
+			const { url } = (await res.json()) as { url: string };
+			sampleAudio = new Audio(url);
+			sampleAudio.onended = () => stopSample();
+			sampleAudio.onerror = () => stopSample();
+			sampleAudio.play().catch(() => stopSample());
+		} catch {
+			samplePlayingVoice = null;
+		}
+	}
+
+	function selectVoice(voiceId: string) {
+		stopSample();
+		audioStore.voice = voiceId;
+		showVoicePanel = false;
+	}
+
+	// ── Speed ────────────────────────────────────────────────────────────────
+	const SPEED_OPTIONS = [0.75, 1, 1.25, 1.5, 2] as const;
+
+	// ── Sleep timer ──────────────────────────────────────────────────────────
+	const SLEEP_OPTIONS = [15, 30, 45, 60]; // minutes
+
+	let sleepRemainingSec = $derived.by(() => {
+		void audioStore.currentTime; // re-run every second while playing
+		if (!audioStore.sleepUntil) return 0;
+		return Math.max(0, Math.floor((audioStore.sleepUntil - Date.now()) / 1000));
+	});
+
+	function cycleSleepTimer() {
+		if (!audioStore.sleepUntil && !audioStore.sleepAfterChapter) {
+			audioStore.sleepAfterChapter = true;
+		} else if (audioStore.sleepAfterChapter) {
+			audioStore.sleepAfterChapter = false;
+			audioStore.sleepUntil = Date.now() + SLEEP_OPTIONS[0] * 60 * 1000;
+		} else {
+			const remaining = audioStore.sleepUntil - Date.now();
+			const currentMin = Math.round(remaining / 60000);
+			const idx = SLEEP_OPTIONS.findIndex((m) => m >= currentMin);
+			if (idx === -1 || idx === SLEEP_OPTIONS.length - 1) {
+				audioStore.sleepUntil = 0;
+			} else {
+				audioStore.sleepUntil = Date.now() + SLEEP_OPTIONS[idx + 1] * 60 * 1000;
+			}
+		}
+	}
+
+	function formatSleepRemaining(secs: number): string {
+		if (secs <= 0) return 'Off';
+		const m = Math.floor(secs / 60);
+		const s = secs % 60;
+		return m > 0 ? `${m}m${s > 0 ? ` ${s}s` : ''}` : `${s}s`;
+	}
+
+	const sleepLabel = $derived(
+		audioStore.sleepAfterChapter
+			? 'End Ch.'
+			: audioStore.sleepUntil > Date.now()
+				? formatSleepRemaining(sleepRemainingSec)
+				: 'Sleep'
+	);
+
+	// ── Format time ──────────────────────────────────────────────────────────
+	function formatTime(s: number): string {
+		if (!isFinite(s) || s < 0) return '0:00';
+		const m = Math.floor(s / 60);
+		const sec = Math.floor(s % 60);
+		return `${m}:${sec.toString().padStart(2, '0')}`;
+	}
+
+	// ── Playback controls ────────────────────────────────────────────────────
+	function seek(e: Event) {
+		audioStore.seekRequest = Number((e.currentTarget as HTMLInputElement).value);
+	}
+	function skipBack() {
+		audioStore.seekRequest = Math.max(0, audioStore.currentTime - 15);
+	}
+	function skipForward() {
+		audioStore.seekRequest = Math.min(audioStore.duration || 0, audioStore.currentTime + 30);
+	}
+	function togglePlay() {
+		audioStore.toggleRequest++;
+	}
+
+	// Close on Escape
+	$effect(() => {
+		function onKey(e: KeyboardEvent) {
+			if (e.key === 'Escape') {
+				if (showVoicePanel) { showVoicePanel = false; }
+				else { onclose(); }
+			}
+		}
+		window.addEventListener('keydown', onKey);
+		return () => window.removeEventListener('keydown', onKey);
+	});
+</script>
+
+<!-- Full-screen listening mode overlay -->
+<!-- svelte-ignore a11y_no_static_element_interactions -->
+<div
+	class="fixed inset-0 z-60 flex flex-col overflow-hidden"
+	style="background: var(--color-surface);"
+>
+	<!-- Blurred cover background -->
+	{#if audioStore.cover}
+		<div
+			class="absolute inset-0 bg-cover bg-center opacity-10 blur-2xl scale-110"
+			style="background-image: url('{audioStore.cover}');"
+			aria-hidden="true"
+		></div>
+	{/if}
+
+	<!-- Header bar -->
+	<div class="relative flex items-center justify-between px-4 py-3 shrink-0">
+		<button
+			type="button"
+			onclick={onclose}
+			class="p-2 rounded-full text-(--color-muted) hover:text-(--color-text) hover:bg-(--color-surface-2) transition-colors"
+			aria-label="Close listening mode"
+		>
+			<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+				<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 9l-7 7-7-7"/>
+			</svg>
+		</button>
+		<span class="text-xs font-semibold text-(--color-muted) uppercase tracking-wider">Now Playing</span>
+		<!-- Voice selector button -->
+		<button
+			type="button"
+			onclick={() => (showVoicePanel = !showVoicePanel)}
+			class={cn(
+				'flex items-center gap-1.5 px-3 py-1.5 rounded-full text-xs font-medium border transition-colors',
+				showVoicePanel
+					? 'border-(--color-brand) bg-(--color-brand)/10 text-(--color-brand)'
+					: 'border-(--color-border) bg-(--color-surface-2) text-(--color-muted) hover:text-(--color-text)'
+			)}
+		>
+			<svg class="w-3.5 h-3.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+				<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 11a7 7 0 01-7 7m0 0a7 7 0 01-7-7m7 7v4m0 0H8m4 0h4m-4-8a3 3 0 01-3-3V5a3 3 0 116 0v6a3 3 0 01-3 3z"/>
+			</svg>
+			<span class="max-w-[80px] truncate">{voiceLabel(audioStore.voice)}</span>
+		</button>
+	</div>
+
+	<!-- Voice panel (inline dropdown below header) -->
+	{#if showVoicePanel && voices.length > 0}
+		<div class="relative mx-4 mb-2 bg-(--color-surface-2) border border-(--color-border) rounded-xl p-3 z-10 overflow-y-auto max-h-56 shrink-0">
+			<div class="flex items-center justify-between mb-2">
+				<p class="text-[10px] font-semibold text-(--color-muted) uppercase tracking-wider">Select Voice</p>
+				<button type="button" onclick={() => { stopSample(); showVoicePanel = false; }} class="text-(--color-muted) hover:text-(--color-text) transition-colors" aria-label="Close voice panel">
+					<svg class="w-3.5 h-3.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+						<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"/>
+					</svg>
+				</button>
+			</div>
+			{#each ([['Kokoro', kokoroVoices], ['Pocket TTS', pocketVoices], ['CF AI', cfaiVoices]] as [string, Voice[]][]) as [label, group]}
+				{#if group.length > 0}
+					<p class="text-[10px] text-(--color-muted) opacity-60 mb-1 mt-2 first:mt-0">{label}</p>
+					<div class="flex flex-wrap gap-1.5">
+						{#each group as v (v.id)}
+							<div class="flex items-center rounded-lg border overflow-hidden text-xs
+								{audioStore.voice === v.id
+									? 'border-(--color-brand) bg-(--color-brand)/10'
+									: 'border-(--color-border) bg-(--color-surface-3)'}">
+								<button
+									type="button"
+									onclick={() => selectVoice(v.id)}
+									class="px-2 py-1 font-medium transition-colors
+										{audioStore.voice === v.id ? 'text-(--color-brand)' : 'text-(--color-muted) hover:text-(--color-text)'}"
+								>{voiceLabel(v)}</button>
+								<button
+									type="button"
+									onclick={(e) => { e.stopPropagation(); playSample(v.id); }}
+									class="px-1.5 py-1 border-l border-(--color-border) transition-colors
+										{samplePlayingVoice === v.id ? 'text-(--color-brand)' : 'text-(--color-muted) hover:text-(--color-text)'}"
+									title={samplePlayingVoice === v.id ? 'Stop sample' : 'Play sample'}
+								>
+									{#if samplePlayingVoice === v.id}
+										<svg class="w-3 h-3" fill="currentColor" viewBox="0 0 24 24"><path d="M6 4h4v16H6V4zm8 0h4v16h-4V4z"/></svg>
+									{:else}
+										<svg class="w-3 h-3" fill="currentColor" viewBox="0 0 24 24"><path d="M8 5v14l11-7z"/></svg>
+									{/if}
+								</button>
+							</div>
+						{/each}
+					</div>
+				{/if}
+			{/each}
+		</div>
+	{/if}
+
+	<!-- Scrollable body -->
+	<div class="relative flex-1 overflow-y-auto flex flex-col">
+
+		<!-- Cover art + track info -->
+		<div class="flex flex-col items-center px-8 pt-4 pb-6 shrink-0">
+			{#if audioStore.cover}
+				<img
+					src={audioStore.cover}
+					alt=""
+					class="w-40 h-56 object-cover rounded-xl shadow-2xl mb-5"
+				/>
+			{:else}
+				<div class="w-40 h-56 flex items-center justify-center bg-(--color-surface-2) rounded-xl shadow-2xl mb-5 border border-(--color-border)">
+					<svg class="w-16 h-16 text-(--color-muted)/40" fill="currentColor" viewBox="0 0 24 24">
+						<path d="M18 2H6c-1.1 0-2 .9-2 2v16c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V4c0-1.1-.9-2-2-2zm-2 14H8v-2h8v2zm0-4H8v-2h8v2zm0-4H8V6h8v2z"/>
+					</svg>
+				</div>
+			{/if}
+
+			<p class="text-base font-bold text-(--color-text) text-center leading-snug">
+				{audioStore.chapterTitle || (audioStore.chapter > 0 ? `Chapter ${audioStore.chapter}` : '')}
+			</p>
+			<p class="text-sm text-(--color-muted) text-center mt-0.5 truncate max-w-full">{audioStore.bookTitle}</p>
+		</div>
+
+		<!-- Seek bar -->
+		<div class="px-6 shrink-0">
+			<input
+				type="range"
+				aria-label="Seek"
+				min="0"
+				max={audioStore.duration || 0}
+				value={audioStore.currentTime}
+				oninput={seek}
+				class="w-full h-1.5 accent-[--color-brand] cursor-pointer block"
+				style="accent-color: var(--color-brand);"
+			/>
+			<div class="flex justify-between text-xs text-(--color-muted) tabular-nums mt-1">
+				<span>{formatTime(audioStore.currentTime)}</span>
+				<span>{formatTime(audioStore.duration)}</span>
+			</div>
+		</div>
+
+		<!-- Transport controls -->
+		<div class="flex items-center justify-center gap-4 px-6 pt-5 pb-2 shrink-0">
+			<!-- Prev chapter -->
+			{#if audioStore.chapter > 1 && audioStore.slug}
+				<a
+					href="/books/{audioStore.slug}/chapters/{audioStore.chapter - 1}"
+					class="p-2 rounded-full text-(--color-muted) hover:text-(--color-text) hover:bg-(--color-surface-2) transition-colors"
+					title="Previous chapter"
+					aria-label="Previous chapter"
+				>
+					<svg class="w-5 h-5" fill="currentColor" viewBox="0 0 24 24">
+						<path d="M6 6h2v12H6zm3.5 6l8.5 6V6z"/>
+					</svg>
+				</a>
+			{:else}
+				<div class="w-9 h-9"></div>
+			{/if}
+
+			<!-- Skip back 15s -->
+			<button
+				type="button"
+				onclick={skipBack}
+				class="p-2 rounded-full text-(--color-muted) hover:text-(--color-text) hover:bg-(--color-surface-2) transition-colors"
+				aria-label="Skip back 15 seconds"
+				title="Back 15s"
+			>
+				<svg class="w-6 h-6" fill="currentColor" viewBox="0 0 24 24">
+					<path d="M11.99 5V1l-5 5 5 5V7c3.31 0 6 2.69 6 6s-2.69 6-6 6-6-2.69-6-6h-2c0 4.42 3.58 8 8 8s8-3.58 8-8-3.58-8-8-8z"/>
+					<text x="8.5" y="14.5" font-size="5" font-family="sans-serif" font-weight="bold" fill="currentColor">15</text>
+				</svg>
+			</button>
+
+			<!-- Play / Pause -->
+			<button
+				type="button"
+				onclick={togglePlay}
+				class="w-16 h-16 rounded-full bg-(--color-brand) text-(--color-surface) flex items-center justify-center hover:bg-(--color-brand-dim) transition-colors shadow-lg"
+				aria-label={audioStore.isPlaying ? 'Pause' : 'Play'}
+			>
+				{#if audioStore.isPlaying}
+					<svg class="w-7 h-7" fill="currentColor" viewBox="0 0 24 24">
+						<path d="M6 4h4v16H6V4zm8 0h4v16h-4V4z"/>
+					</svg>
+				{:else}
+					<svg class="w-7 h-7 ml-1" fill="currentColor" viewBox="0 0 24 24">
+						<path d="M8 5v14l11-7z"/>
+					</svg>
+				{/if}
+			</button>
+
+			<!-- Skip forward 30s -->
+			<button
+				type="button"
+				onclick={skipForward}
+				class="p-2 rounded-full text-(--color-muted) hover:text-(--color-text) hover:bg-(--color-surface-2) transition-colors"
+				aria-label="Skip forward 30 seconds"
+				title="Forward 30s"
+			>
+				<svg class="w-6 h-6" fill="currentColor" viewBox="0 0 24 24">
+					<path d="M12 5V1l5 5-5 5V7c-3.31 0-6 2.69-6 6s2.69 6 6 6 6-2.69 6-6h2c0 4.42-3.58 8-8 8s-8-3.58-8-8 3.58-8 8-8z"/>
+					<text x="8.5" y="14.5" font-size="5" font-family="sans-serif" font-weight="bold" fill="currentColor">30</text>
+				</svg>
+			</button>
+
+			<!-- Next chapter -->
+			{#if audioStore.nextChapter !== null && audioStore.slug}
+				<a
+					href="/books/{audioStore.slug}/chapters/{audioStore.nextChapter}"
+					class="p-2 rounded-full text-(--color-muted) hover:text-(--color-text) hover:bg-(--color-surface-2) transition-colors"
+					title="Next chapter"
+					aria-label="Next chapter"
+				>
+					<svg class="w-5 h-5" fill="currentColor" viewBox="0 0 24 24">
+						<path d="M6 18l8.5-6L6 6v12zm8.5-6L23 6v12l-8.5-6z"/>
+					</svg>
+				</a>
+			{:else}
+				<div class="w-9 h-9"></div>
+			{/if}
+		</div>
+
+		<!-- Secondary controls: Speed · Auto-next · Sleep -->
+		<div class="flex items-center justify-center gap-3 px-6 py-3 shrink-0">
+			<!-- Speed -->
+			<div class="flex items-center gap-1 bg-(--color-surface-2) rounded-full px-2 py-1 border border-(--color-border)">
+				{#each SPEED_OPTIONS as s}
+					<button
+						type="button"
+						onclick={() => (audioStore.speed = s)}
+						class={cn(
+							'px-2 py-0.5 rounded-full text-xs font-semibold transition-colors',
+							audioStore.speed === s
+								? 'bg-(--color-brand) text-(--color-surface)'
+								: 'text-(--color-muted) hover:text-(--color-text)'
+						)}
+						aria-pressed={audioStore.speed === s}
+					>{s}×</button>
+				{/each}
+			</div>
+
+			<!-- Auto-next -->
+			<button
+				type="button"
+				onclick={() => (audioStore.autoNext = !audioStore.autoNext)}
+				class={cn(
+					'flex items-center gap-1.5 px-3 py-1.5 rounded-full text-xs font-semibold border transition-colors',
+					audioStore.autoNext
+						? 'border-(--color-brand) bg-(--color-brand)/15 text-(--color-brand)'
+						: 'border-(--color-border) bg-(--color-surface-2) text-(--color-muted) hover:text-(--color-text)'
+				)}
+				aria-pressed={audioStore.autoNext}
+				title={audioStore.autoNext ? 'Auto-next on' : 'Auto-next off'}
+			>
+				<svg class="w-3.5 h-3.5" fill="currentColor" viewBox="0 0 24 24">
+					<path d="M6 18l8.5-6L6 6v12zm8.5-6L23 6v12l-8.5-6z"/>
+				</svg>
+				Auto
+				{#if audioStore.autoNext && audioStore.nextStatus === 'prefetching'}
+					<span class="w-1.5 h-1.5 rounded-full bg-(--color-brand) animate-pulse"></span>
+				{:else if audioStore.autoNext && audioStore.nextStatus === 'prefetched'}
+					<span class="w-1.5 h-1.5 rounded-full bg-green-400"></span>
+				{/if}
+			</button>
+
+			<!-- Sleep timer -->
+			<button
+				type="button"
+				onclick={cycleSleepTimer}
+				class={cn(
+					'flex items-center gap-1.5 px-3 py-1.5 rounded-full text-xs font-semibold border transition-colors',
+					audioStore.sleepUntil || audioStore.sleepAfterChapter
+						? 'border-(--color-brand) bg-(--color-brand)/15 text-(--color-brand)'
+						: 'border-(--color-border) bg-(--color-surface-2) text-(--color-muted) hover:text-(--color-text)'
+				)}
+				title="Sleep timer"
+			>
+				<svg class="w-3.5 h-3.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+					<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M20.354 15.354A9 9 0 018.646 3.646 9.003 9.003 0 0012 21a9.003 9.003 0 008.354-5.646z"/>
+				</svg>
+				{sleepLabel}
+			</button>
+		</div>
+
+		<!-- Chapter list -->
+		{#if audioStore.chapters.length > 0}
+			<div class="mx-4 mb-6 bg-(--color-surface-2) rounded-xl border border-(--color-border) overflow-hidden shrink-0">
+				<p class="text-[10px] font-semibold text-(--color-muted) uppercase tracking-wider px-4 py-2.5 border-b border-(--color-border)">Chapters</p>
+				<div class="overflow-y-auto max-h-64">
+					{#each audioStore.chapters as ch (ch.number)}
+						<a
+							href="/books/{audioStore.slug}/chapters/{ch.number}"
+							onclick={onclose}
+							class="flex items-center gap-3 px-4 py-2.5 text-xs transition-colors hover:bg-(--color-surface-3)
+								{ch.number === audioStore.chapter ? 'text-(--color-brand) font-semibold bg-(--color-brand)/5' : 'text-(--color-muted)'}"
+						>
+							<span class="tabular-nums w-7 shrink-0 text-right opacity-50">{ch.number}</span>
+							<span class="flex-1 truncate">{ch.title || `Chapter ${ch.number}`}</span>
+							{#if ch.number === audioStore.chapter}
+								<svg class="w-3 h-3 shrink-0 text-(--color-brand)" fill="currentColor" viewBox="0 0 24 24">
+									<path d="M8 5v14l11-7z"/>
+								</svg>
+							{/if}
+						</a>
+					{/each}
+				</div>
+			</div>
+		{/if}
+
+	</div>
+</div>

ui/src/routes/+layout.svelte

@@ -11,6 +11,7 @@
 	import { cn } from '$lib/utils';
 	import * as m from '$lib/paraglide/messages.js';
 	import { locales, getLocale } from '$lib/paraglide/runtime.js';
+	import ListeningMode from '$lib/components/ListeningMode.svelte';
 
 	let { children, data }: { children: Snippet; data: LayoutData } = $props();
 
@@ -34,6 +35,7 @@
 	// Chapter list drawer state for the mini-player
 	let chapterDrawerOpen = $state(false);
 	let activeChapterEl = $state<HTMLElement | null>(null);
+	let listeningModeOpen = $state(false);
 
 	function setIfActive(node: HTMLElement, isActive: boolean) {
 		if (isActive) activeChapterEl = node;
@@ -287,7 +289,7 @@
 		audioEl.currentTime = Math.min(audioEl.duration || 0, audioEl.currentTime + 30);
 	}
 
-	const speedSteps = [0.5, 0.75, 1.0, 1.25, 1.5, 1.75, 2.0, 2.5, 3.0];
+	const speedSteps = [0.75, 1.0, 1.25, 1.5, 2.0];
 
 	function cycleSpeed() {
 		const idx = speedSteps.indexOf(audioStore.speed);
@@ -993,6 +995,21 @@
 				</a>
 			{/if}
 
+			<!-- Headphones: open listening mode -->
+			<Button
+				variant="ghost"
+				size="icon"
+				onclick={() => (listeningModeOpen = true)}
+				title="Listening mode"
+				aria-label="Open listening mode"
+				class="text-(--color-muted) hover:text-(--color-text) flex-shrink-0"
+			>
+				<svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+					<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M3 18v-6a9 9 0 0118 0v6"/>
+					<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M21 19a2 2 0 01-2 2h-1a2 2 0 01-2-2v-3a2 2 0 012-2h3zM3 19a2 2 0 002 2h1a2 2 0 002-2v-3a2 2 0 00-2-2H3z"/>
+				</svg>
+			</Button>
+
 			<!-- Dismiss -->
 			<Button
 				variant="ghost"
@@ -1008,4 +1025,9 @@
 			</Button>
 		</div>
 	</div>
+
+	<!-- Listening mode full-screen overlay -->
+	{#if listeningModeOpen}
+		<ListeningMode onclose={() => (listeningModeOpen = false)} />
+	{/if}
 {/if}