diff --git a/assets/css/app.css b/assets/css/app.css
index cc196f8..ed79229 100644
--- a/assets/css/app.css
+++ b/assets/css/app.css
@@ -886,15 +886,39 @@ body.page-dashboard .content {
 }
 
 .sleep-phase-bar {
+    position: relative;
     display: flex;
     min-height: 2.35rem;
-    margin-top: 0.75rem;
+    margin-top: 1.55rem;
     overflow: hidden;
     border-radius: 999px;
     border: 1px solid rgba(255, 255, 255, 0.14);
     background: rgba(255, 255, 255, 0.08);
 }
 
+.sleep-phase-bar__target {
+    position: absolute;
+    left: var(--sleep-optimal-left, 100%);
+    top: -1.28rem;
+    bottom: 0;
+    width: 0;
+    border-left: 2px solid rgba(255, 255, 255, 0.92);
+    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.45));
+    pointer-events: none;
+}
+
+.sleep-phase-bar__target span {
+    position: absolute;
+    top: 0;
+    left: 0.28rem;
+    padding: 0.08rem 0.34rem;
+    border-radius: 999px;
+    background: rgba(6, 16, 28, 0.72);
+    color: rgba(255, 255, 255, 0.95);
+    font-size: 0.68rem;
+    white-space: nowrap;
+}
+
 .sleep-phase-bar__segment {
     display: inline-flex;
     align-items: center;
diff --git a/assets/js/app.js b/assets/js/app.js
index ea3cf29..82760f6 100644
--- a/assets/js/app.js
+++ b/assets/js/app.js
@@ -1658,6 +1658,10 @@
             return;
         }
 
+        if (lightbox.parentElement !== document.body) {
+            document.body.appendChild(lightbox);
+        }
+
         const close = () => {
             lightbox.setAttribute("hidden", "hidden");
             content.replaceChildren();
diff --git a/src/App.php b/src/App.php
index ea720d2..9140505 100644
--- a/src/App.php
+++ b/src/App.php
@@ -366,7 +366,7 @@ final class App
 
         $metrics = $this->healthMetricsFromPayload($payload);
         $workouts = $this->healthWorkoutsFromPayload($payload);
-        $metricImport = $this->healthEventsFromMetrics($metrics);
+        $metricImport = $this->healthEventsFromMetrics($metrics, (float) ($settings['sleep']['optimal_hours'] ?? 7.0));
         $workoutImport = $this->healthEventsFromWorkouts($workouts, $settings);
 
         $entries = $this->entries->all($username);
@@ -717,7 +717,7 @@ final class App
         ];
     }
 
-    private function healthEventsFromMetrics(array $metrics): array
+    private function healthEventsFromMetrics(array $metrics, float $optimalSleepHours = 7.0): array
     {
         $steps = [];
         $sleepBuckets = [];
@@ -786,7 +786,7 @@ final class App
 
         $sleep = [];
         foreach ($sleepBuckets as $date => $bucket) {
-            $signals = $this->healthSleepSignals($bucket);
+            $signals = $this->healthSleepSignals($bucket, $optimalSleepHours);
 
             $sleep[$date][] = [
                 'id' => 'health-sleep-' . $date,
@@ -815,17 +815,19 @@ final class App
         ];
     }
 
-    private function healthSleepSignals(array $bucket): array
+    private function healthSleepSignals(array $bucket, float $optimalSleepHours = 7.0): array
     {
         $hours = (float) ($bucket['hours'] ?? 0);
         $deep = (float) ($bucket['deep'] ?? 0);
         $rem = (float) ($bucket['rem'] ?? 0);
         $core = (float) ($bucket['core'] ?? 0);
+        $optimalSleepHours = max(1.0, min(16.0, $optimalSleepHours));
         $quality = 0;
+        $deviation = abs($hours - $optimalSleepHours);
 
-        if ($hours >= 7 && $hours <= 9) {
+        if ($deviation <= 0.75) {
             $quality++;
-        } elseif ($hours < 5 || $hours > 10) {
+        } elseif ($deviation >= 2.0) {
             $quality--;
         }
 
@@ -843,8 +845,8 @@ final class App
 
         return [
             'mood' => max(-2, min(2, $quality - 1)),
-            'energy' => max(-2, min(2, (int) round(($deep + $rem) - 2))),
-            'stress' => max(-2, min(2, $core >= 3.5 && $hours >= 6 ? -1 : ($hours < 5 ? 1 : 0))),
+            'energy' => max(-2, min(2, (int) round(($deep + $rem) - 2 - max(0, $deviation - 1)))),
+            'stress' => max(-2, min(2, $core >= 3.5 && $deviation <= 1.0 ? -1 : ($deviation >= 2.0 ? 1 : 0))),
         ];
     }
 
@@ -1202,7 +1204,7 @@ final class App
             'dayEntry' => $selectedEntry,
             'dashboardEventTypes' => day_event_type_options(),
             'dashboardSignals' => signal_scale_options(),
-            'dashboardTimeline' => $this->buildDashboardTimeline($selectedEntry),
+            'dashboardTimeline' => $this->buildDashboardTimeline($selectedEntry, $settings),
             'dashboardCompareDays' => $this->buildDashboardCompareDays($dashboardDate, $entryMap, $settings),
             'dashboardWeek' => $this->buildDashboardWeekView($dashboardDate, $entryMap),
             'dashboardMonth' => $this->buildDashboardMonthView($dashboardDate, $entryMap),
@@ -1392,7 +1394,7 @@ final class App
         ]);
     }
 
-    private function buildDashboardTimeline(array $entry): array
+    private function buildDashboardTimeline(array $entry, array $settings): array
     {
         $timeline = [];
 
@@ -1401,10 +1403,26 @@ final class App
                 continue;
             }
 
+            $type = (string) ($event['type'] ?? 'event');
+            $mood = normalize_signal_value($event['mood'] ?? 0);
+            $energy = normalize_signal_value($event['energy'] ?? 0);
+            $stress = normalize_signal_value($event['stress'] ?? 0);
+            if ($type === 'sleep' && (string) ($event['source'] ?? '') === 'health_auto_export') {
+                $signals = $this->healthSleepSignals([
+                    'hours' => (float) ($event['value'] ?? 0),
+                    'deep' => (float) ($event['sleep_deep'] ?? 0),
+                    'rem' => (float) ($event['sleep_rem'] ?? 0),
+                    'core' => (float) ($event['sleep_core'] ?? 0),
+                ], (float) ($settings['sleep']['optimal_hours'] ?? 7.0));
+                $mood = $signals['mood'];
+                $energy = $signals['energy'];
+                $stress = $signals['stress'];
+            }
+
             $timeline[] = [
                 'kind' => 'event',
                 'id' => (string) ($event['id'] ?? ''),
-                'type' => (string) ($event['type'] ?? 'event'),
+                'type' => $type,
                 'time' => (string) ($event['time'] ?? ''),
                 'comment' => (string) ($event['comment'] ?? ''),
                 'value' => (float) ($event['value'] ?? 0),
@@ -1413,9 +1431,9 @@ final class App
                 'consumed' => !empty($event['consumed']),
                 'image' => (string) ($event['image'] ?? ''),
                 'image_url' => is_string($event['image_url'] ?? null) ? (string) $event['image_url'] : null,
-                'mood' => normalize_signal_value($event['mood'] ?? 0),
-                'energy' => normalize_signal_value($event['energy'] ?? 0),
-                'stress' => normalize_signal_value($event['stress'] ?? 0),
+                'mood' => $mood,
+                'energy' => $energy,
+                'stress' => $stress,
                 'source' => (string) ($event['source'] ?? ''),
                 'import_id' => (string) ($event['import_id'] ?? ''),
                 'duration_label' => (string) ($event['duration_label'] ?? ''),
@@ -2894,6 +2912,9 @@ final class App
         $settings['walk'] = [
             'mode' => ($input['walk']['mode'] ?? ($settings['walk']['mode'] ?? 'time')) === 'steps' ? 'steps' : 'time',
         ];
+        $settings['sleep'] = [
+            'optimal_hours' => max(1.0, min(16.0, round((float) ($input['sleep']['optimal_hours'] ?? ($settings['sleep']['optimal_hours'] ?? 7.0)), 1))),
+        ];
 
         $settings['scoring']['mood_multiplier'] = max(0, min(10, (int) ($input['scoring']['mood_multiplier'] ?? 3)));
         $settings['scoring']['energy_multiplier'] = max(0, min(10, (int) ($input['scoring']['energy_multiplier'] ?? 2)));
@@ -2976,6 +2997,11 @@ final class App
             Defaults::settings()['walk'],
             is_array($settings['walk'] ?? null) ? $settings['walk'] : []
         );
+        $settings['sleep'] = array_replace(
+            Defaults::settings()['sleep'],
+            is_array($settings['sleep'] ?? null) ? $settings['sleep'] : []
+        );
+        $settings['sleep']['optimal_hours'] = max(1.0, min(16.0, round((float) ($settings['sleep']['optimal_hours'] ?? 7.0), 1)));
         $settings['tracking'] = array_replace(
             Defaults::settings()['tracking'],
             is_array($settings['tracking'] ?? null) ? $settings['tracking'] : []
diff --git a/src/Support/Defaults.php b/src/Support/Defaults.php
index da8833e..fac2169 100644
--- a/src/Support/Defaults.php
+++ b/src/Support/Defaults.php
@@ -19,6 +19,9 @@ final class Defaults
             'walk' => [
                 'mode' => 'time',
             ],
+            'sleep' => [
+                'optimal_hours' => 7.0,
+            ],
             'tracking' => [
                 'pain_enabled' => false,
             ],
diff --git a/templates/layout.php b/templates/layout.php
index 5d3f5c6..b4a7e89 100644
--- a/templates/layout.php
+++ b/templates/layout.php
@@ -19,7 +19,7 @@ $jsVersion = is_file(base_path('assets/js/app.js')) ? (string) filemtime(base_pa
 <html lang="de">
 <head>
     <meta charset="utf-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover">
     <meta name="theme-color" content="#0b1e2e">
     <meta name="robots" content="noindex, nofollow, noarchive, nosnippet">
     <meta name="apple-mobile-web-app-capable" content="yes">
diff --git a/templates/pages/dashboard.php b/templates/pages/dashboard.php
index b5f3cb5..2ddcb81 100644
--- a/templates/pages/dashboard.php
+++ b/templates/pages/dashboard.php
@@ -10,6 +10,7 @@ $summaryAlcohol = !empty($dayEntry['summary']['alcohol'] ?? $dayEntry['summary_a
 $dayHealth = is_array($dayEntry['health'] ?? null) ? $dayEntry['health'] : [];
 $daySteps = (int) ($dayHealth['steps'] ?? 0);
 $dayStepBonus = (float) ($dayEntry['evaluation']['components']['step_bonus'] ?? 0);
+$optimalSleepHours = max(1.0, min(16.0, (float) ($settings['sleep']['optimal_hours'] ?? 7.0)));
 ?>
 
 <section class="dashboard-shell<?= $dayBackground !== null ? ' dashboard-shell--with-image' : '' ?>" data-dashboard-root>
@@ -113,6 +114,8 @@ $dayStepBonus = (float) ($dayEntry['evaluation']['components']['step_bonus'] ??
                                 }
                             }
                             $sleepPhaseTotal = max(0.0, array_sum($sleepPhases));
+                            $sleepBarTotal = $eventType === 'sleep' ? max((float) ($item['value'] ?? 0), $sleepPhaseTotal, $optimalSleepHours) : 0.0;
+                            $sleepOptimalPercent = $sleepBarTotal > 0 ? max(0, min(100, ($optimalSleepHours / $sleepBarTotal) * 100)) : 0;
                         ?>
                         <?php $eventStats = array_values(array_filter([
                             $eventType !== 'sleep' ? (string) ($item['duration_label'] ?? '') : '',
@@ -121,7 +124,7 @@ $dayStepBonus = (float) ($dayEntry['evaluation']['components']['step_bonus'] ??
                             (string) ($item['heart_rate_label'] ?? ''),
                         ], static function (string $value): bool {
                             $value = trim($value);
-                            return $value !== '' && !preg_match('/^-\s*(Distanz|Energie|Puls|Route)-?Label:?$/u', $value);
+                            return $value !== '' && !preg_match('/^-\s*(Distanz|Energie|Puls|Route)(?:-?Label)?:?$/u', $value);
                         })); ?>
                         <?php $eventPayload = encode_payload([
                             'id' => (string) ($item['id'] ?? ''),
@@ -182,7 +185,7 @@ $dayStepBonus = (float) ($dayEntry['evaluation']['components']['step_bonus'] ??
                                 <?php endif; ?>
 
                                 <?php if ($eventType === 'sleep' && $sleepPhaseTotal > 0): ?>
-                                    <div class="sleep-phase-bar" aria-label="Schlafphasen">
+                                    <div class="sleep-phase-bar" aria-label="Schlafphasen" style="--sleep-optimal-left: <?= e((string) $sleepOptimalPercent) ?>%">
                                         <?php foreach (['deep' => ['Tief', 'deep'], 'rem' => ['REM', 'rem'], 'core' => ['Kern', 'core']] as $phase => [$label, $class]): ?>
                                             <?php $phaseHours = max(0.0, (float) ($sleepPhases[$phase] ?? 0)); ?>
                                             <?php if ($phaseHours <= 0) { continue; } ?>
@@ -190,6 +193,7 @@ $dayStepBonus = (float) ($dayEntry['evaluation']['components']['step_bonus'] ??
                                                 <strong><?= e($label) ?></strong> <?= e(format_points($phaseHours)) ?> h
                                             </span>
                                         <?php endforeach; ?>
+                                        <span class="sleep-phase-bar__target"><span><?= e(format_points($optimalSleepHours)) ?> h</span></span>
                                     </div>
                                 <?php endif; ?>
 
@@ -626,6 +630,7 @@ $dayStepBonus = (float) ($dayEntry['evaluation']['components']['step_bonus'] ??
             <div class="settings-menu-grid">
                 <a class="options-menu-card" href="/options?panel=sports"><strong>Sportarten anpassen</strong><span>Eigene Sportarten und Bonuspunkte</span></a>
                 <a class="options-menu-card" href="/options?panel=walk"><strong>Spaziergang anpassen</strong><span>Zeit oder Schritte auswerten</span></a>
+                <a class="options-menu-card" href="/options?panel=sleep"><strong>Schlaf anpassen</strong><span>Optimale Schlafmenge</span></a>
                 <a class="options-menu-card" href="/options?panel=health"><strong>Health Import</strong><span>Apple Health automatisch übernehmen</span></a>
                 <a class="options-menu-card" href="/options?panel=reminders"><strong>Erinnerungen setzen</strong><span>Push und tägliche Erinnerung</span></a>
                 <a class="options-menu-card" href="/options?panel=ratings"><strong>Bewertungsskala ändern</strong><span>Labels und Schutzregeln</span></a>
diff --git a/templates/pages/options.php b/templates/pages/options.php
index 21bbd04..fcb8b18 100644
--- a/templates/pages/options.php
+++ b/templates/pages/options.php
@@ -18,6 +18,7 @@
                 <div class="options-menu-grid">
                     <button class="options-menu-card" type="button" data-options-open="sports"><strong>Sportarten anpassen</strong><span>Eigene Sportarten und Bonuspunkte</span></button>
                     <button class="options-menu-card" type="button" data-options-open="walk"><strong>Spaziergang anpassen</strong><span>Zeit oder Schritte auswerten</span></button>
+                    <button class="options-menu-card" type="button" data-options-open="sleep"><strong>Schlaf anpassen</strong><span>Optimale Schlafmenge markieren</span></button>
                     <button class="options-menu-card" type="button" data-options-open="reminders"><strong>Erinnerungen setzen</strong><span>Push und tägliche Erinnerung</span></button>
                     <button class="options-menu-card" type="button" data-options-open="health"><strong>Health Import</strong><span>Apple Health automatisch übernehmen</span></button>
                     <button class="options-menu-card" type="button" data-options-open="ratings"><strong>Bewertungsskala ändern</strong><span>Labels und Schutzregeln</span></button>
@@ -113,6 +114,17 @@
                 </form>
             </div>
 
+            <div class="options-panel" data-options-panel="sleep" hidden>
+                <h2>Schlaf anpassen</h2>
+                <form method="post" action="/options" class="stack-form">
+                    <?= csrf_field() ?>
+                    <input type="hidden" name="form_name" value="settings">
+                    <p class="helper-text">Diese Zielmenge wird im importierten Schlafbalken als horizontale Markierung angezeigt und fließt in die automatische Stimmung/Energie/Stress-Einschätzung ein.</p>
+                    <label><span>Optimale Schlafdauer</span><input type="number" name="settings[sleep][optimal_hours]" value="<?= e((string) ($settings['sleep']['optimal_hours'] ?? 7.0)) ?>" min="1" max="16" step="0.1"></label>
+                    <button class="primary-button" type="submit">Schlaf speichern</button>
+                </form>
+            </div>
+
             <div class="options-panel" data-options-panel="reminders" hidden>
                 <h2>Erinnerungen setzen</h2>
                 <form method="post" action="/options" class="stack-form">