diff --git a/apps/web/src/lib/components/dashboard/OnboardingFlow.svelte b/apps/web/src/lib/components/dashboard/OnboardingFlow.svelte
new file mode 100644
index 0000000..15890e3
--- /dev/null
+++ b/apps/web/src/lib/components/dashboard/OnboardingFlow.svelte
@@ -0,0 +1,567 @@
+<script lang="ts">
+  import { goto } from '$app/navigation';
+  import { fly } from 'svelte/transition';
+  import { api } from '$lib/api/client.js';
+  import { toastError, toastSuccess } from '$lib/stores/toast.js';
+  import Button from '$lib/components/ui/Button.svelte';
+
+  let { open = $bindable(false) }: { open?: boolean } = $props();
+
+  let step = $state(0);
+  let dir = $state(1);
+  let selectedRole = $state('');
+  let projectName = $state('');
+  let inviteEmail = $state('');
+  let loading = $state(false);
+  let createdProjectId = $state('');
+
+  const roles = [
+    { id: 'producer', label: 'Produzent', icon: '🎛️', desc: 'Beats, Tracks, Stems' },
+    { id: 'label', label: 'Label / A&R', icon: '🏢', desc: 'Releases & Feedback' },
+    { id: 'artist', label: 'Artist', icon: '🎤', desc: 'Aufnahmen & Kollaboration' },
+    { id: 'manager', label: 'Manager', icon: '📋', desc: 'Team & Koordination' },
+    { id: 'engineer', label: 'Mix Engineer', icon: '🎚️', desc: 'Mixen & Mastern' },
+    { id: 'other', label: 'Anderes', icon: '✨', desc: 'Ich entdecke die Platform' },
+  ];
+
+  function pickRole(id: string) {
+    selectedRole = id;
+    if (typeof localStorage !== 'undefined') {
+      localStorage.setItem('onboarding-role', id);
+    }
+    advance();
+  }
+
+  function advance() {
+    dir = 1;
+    step++;
+  }
+
+  function back() {
+    dir = -1;
+    step--;
+  }
+
+  async function loadDemo() {
+    loading = true;
+    try {
+      const res = await api.post<{ projectId: string }>('/onboarding/seed-demo');
+      createdProjectId = res.projectId;
+      advance();
+    } catch {
+      toastError('Demo konnte nicht geladen werden');
+    } finally {
+      loading = false;
+    }
+  }
+
+  async function createProject() {
+    const name = projectName.trim();
+    if (!name) return;
+    loading = true;
+    try {
+      const res = await api.post<{ project: { id: string } }>('/projects', { name });
+      createdProjectId = res.project.id;
+      advance();
+    } catch {
+      toastError('Projekt konnte nicht erstellt werden');
+    } finally {
+      loading = false;
+    }
+  }
+
+  async function sendInvite() {
+    const email = inviteEmail.trim();
+    if (!email || !createdProjectId) return;
+    loading = true;
+    try {
+      await api.post(`/projects/${createdProjectId}/members`, {
+        email,
+        role: 'collaborator',
+        canUpload: true,
+        canComment: true,
+        canApprove: false,
+      });
+      toastSuccess(`Einladung an ${email} gesendet`);
+      finish();
+    } catch {
+      toastError('Einladung konnte nicht gesendet werden');
+    } finally {
+      loading = false;
+    }
+  }
+
+  function finish() {
+    if (typeof localStorage !== 'undefined') {
+      localStorage.setItem('onboarding-done', '1');
+    }
+    open = false;
+    if (createdProjectId) {
+      goto(`/projects/${createdProjectId}`);
+    }
+  }
+</script>
+
+{#if open}
+  <div class="overlay" role="dialog" aria-modal="true" aria-label="Onboarding">
+    <div class="panel">
+      <div class="panel-inner">
+        <!-- Header -->
+        <div class="panel-head">
+          <div class="dots">
+            {#each [0, 1, 2] as i}
+              <div class="dot" class:active={step === i} class:done={step > i}></div>
+            {/each}
+          </div>
+          {#if step < 2}
+            <button class="skip-btn" onclick={finish}>Überspringen</button>
+          {/if}
+        </div>
+
+        <!-- Step content -->
+        <div class="steps-viewport">
+          {#key step}
+            <div
+              class="step"
+              in:fly={{ x: dir * 56, opacity: 0, duration: 300, delay: 60 }}
+              out:fly={{ x: dir * -56, opacity: 0, duration: 220 }}
+            >
+              {#if step === 0}
+                <div class="step-header">
+                  <div class="wordmark">Music Hub</div>
+                  <h1>Willkommen!</h1>
+                  <p class="lead">Wie würdest du dich beschreiben?</p>
+                </div>
+                <div class="roles">
+                  {#each roles as role}
+                    <button
+                      class="role-tile"
+                      class:selected={selectedRole === role.id}
+                      onclick={() => pickRole(role.id)}
+                    >
+                      <span class="role-icon">{role.icon}</span>
+                      <span class="role-label">{role.label}</span>
+                      <span class="role-desc">{role.desc}</span>
+                    </button>
+                  {/each}
+                </div>
+
+              {:else if step === 1}
+                <div class="step-header">
+                  <h1>Wie möchtest du starten?</h1>
+                  <p class="lead">Du kannst das Demo jederzeit löschen</p>
+                </div>
+                <div class="choices">
+                  <button class="choice-card" onclick={loadDemo} disabled={loading}>
+                    <span class="choice-emoji">🎵</span>
+                    <div class="choice-text">
+                      <strong>Demo-Projekt laden</strong>
+                      <span>Sofort loslegen mit echten Beispiel-Tracks, Versionen und Kommentaren</span>
+                    </div>
+                    <span class="choice-arrow">→</span>
+                  </button>
+                  <div class="or-divider"><span>oder</span></div>
+                  <div class="new-row">
+                    <input
+                      class="name-input"
+                      type="text"
+                      placeholder="Projekttitel eingeben …"
+                      bind:value={projectName}
+                      onkeydown={(e) => e.key === 'Enter' && createProject()}
+                      autofocus
+                    />
+                    <Button
+                      onclick={createProject}
+                      {loading}
+                      disabled={loading || !projectName.trim()}
+                    >Erstellen →</Button>
+                  </div>
+                </div>
+                <button class="back-btn" onclick={back}>← Zurück</button>
+
+              {:else if step === 2}
+                <div class="step-header">
+                  <div class="check-icon">✓</div>
+                  <h1>Fast fertig!</h1>
+                  <p class="lead">Lade jemanden ein — oder starte direkt alleine.</p>
+                </div>
+                <div class="invite-block">
+                  <input
+                    class="name-input"
+                    type="email"
+                    placeholder="E-Mail-Adresse eingeben …"
+                    bind:value={inviteEmail}
+                    onkeydown={(e) => e.key === 'Enter' && sendInvite()}
+                    autofocus
+                  />
+                  <Button
+                    onclick={sendInvite}
+                    {loading}
+                    disabled={loading || !inviteEmail.trim()}
+                  >Einladen</Button>
+                </div>
+                <div class="finish-row">
+                  <button class="skip-link" onclick={finish}>Überspringen → Zum Projekt</button>
+                </div>
+              {/if}
+            </div>
+          {/key}
+        </div>
+      </div>
+    </div>
+  </div>
+{/if}
+
+<style>
+  .overlay {
+    position: fixed;
+    inset: 0;
+    z-index: 1000;
+    background: rgba(0, 0, 0, 0.85);
+    backdrop-filter: blur(8px);
+    -webkit-backdrop-filter: blur(8px);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    padding: var(--space-4);
+  }
+
+  .panel {
+    background: var(--color-bg-raised);
+    border: 1px solid var(--color-border);
+    border-radius: var(--radius-xl, 20px);
+    width: 100%;
+    max-width: 620px;
+    max-height: 90vh;
+    overflow: hidden;
+    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
+  }
+
+  .panel-inner {
+    padding: var(--space-6) var(--space-7);
+    display: flex;
+    flex-direction: column;
+    gap: var(--space-5);
+  }
+
+  .panel-head {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+  }
+
+  .dots {
+    display: flex;
+    gap: 6px;
+  }
+
+  .dot {
+    width: 8px;
+    height: 8px;
+    border-radius: 50%;
+    background: var(--color-border);
+    transition: background 0.25s, transform 0.25s;
+  }
+
+  .dot.active {
+    background: var(--color-accent);
+    transform: scale(1.25);
+  }
+
+  .dot.done {
+    background: var(--color-accent);
+    opacity: 0.4;
+  }
+
+  .skip-btn {
+    background: none;
+    border: none;
+    color: var(--color-text-tertiary);
+    font-size: var(--text-sm);
+    cursor: pointer;
+    padding: 0;
+    transition: color var(--transition-fast);
+  }
+
+  .skip-btn:hover {
+    color: var(--color-text-secondary);
+  }
+
+  .steps-viewport {
+    position: relative;
+    min-height: 320px;
+    overflow: hidden;
+  }
+
+  .step {
+    position: absolute;
+    inset: 0;
+    display: flex;
+    flex-direction: column;
+    gap: var(--space-5);
+    overflow-y: auto;
+  }
+
+  /* Step headers */
+  .step-header {
+    text-align: center;
+  }
+
+  .wordmark {
+    font-size: var(--text-sm);
+    font-weight: 600;
+    letter-spacing: 0.06em;
+    text-transform: uppercase;
+    color: var(--color-accent);
+    margin-bottom: var(--space-3);
+  }
+
+  .step-header h1 {
+    font-size: var(--text-2xl);
+    font-weight: 700;
+    margin: 0 0 var(--space-2);
+    color: var(--color-text-primary);
+    letter-spacing: -0.02em;
+  }
+
+  .lead {
+    color: var(--color-text-tertiary);
+    font-size: var(--text-sm);
+    margin: 0;
+  }
+
+  .check-icon {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    width: 48px;
+    height: 48px;
+    border-radius: 50%;
+    background: color-mix(in srgb, var(--color-accent) 20%, transparent);
+    color: var(--color-accent);
+    font-size: 1.4rem;
+    font-weight: 700;
+    margin: 0 auto var(--space-3);
+  }
+
+  /* Role tiles */
+  .roles {
+    display: grid;
+    grid-template-columns: repeat(3, 1fr);
+    gap: var(--space-3);
+  }
+
+  .role-tile {
+    background: var(--color-bg);
+    border: 1.5px solid var(--color-border);
+    border-radius: var(--radius-lg, 12px);
+    padding: var(--space-4) var(--space-3);
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    gap: var(--space-1);
+    cursor: pointer;
+    transition: all var(--transition-fast);
+    text-align: center;
+  }
+
+  .role-tile:hover {
+    border-color: var(--color-accent);
+    background: color-mix(in srgb, var(--color-accent) 8%, var(--color-bg));
+    transform: translateY(-2px);
+  }
+
+  .role-tile.selected {
+    border-color: var(--color-accent);
+    background: color-mix(in srgb, var(--color-accent) 12%, var(--color-bg));
+  }
+
+  .role-icon {
+    font-size: 1.75rem;
+    line-height: 1;
+  }
+
+  .role-label {
+    font-size: var(--text-sm);
+    font-weight: 600;
+    color: var(--color-text-primary);
+  }
+
+  .role-desc {
+    font-size: var(--text-xs);
+    color: var(--color-text-tertiary);
+    line-height: 1.3;
+  }
+
+  /* Choice cards (step 1) */
+  .choices {
+    display: flex;
+    flex-direction: column;
+    gap: var(--space-3);
+  }
+
+  .choice-card {
+    display: flex;
+    align-items: center;
+    gap: var(--space-4);
+    background: var(--color-bg);
+    border: 1.5px solid var(--color-border);
+    border-radius: var(--radius-lg, 12px);
+    padding: var(--space-4) var(--space-5);
+    cursor: pointer;
+    text-align: left;
+    transition: all var(--transition-fast);
+  }
+
+  .choice-card:hover:not(:disabled) {
+    border-color: var(--color-accent);
+    background: color-mix(in srgb, var(--color-accent) 8%, var(--color-bg));
+    transform: translateY(-1px);
+  }
+
+  .choice-card:disabled {
+    opacity: 0.5;
+    cursor: not-allowed;
+  }
+
+  .choice-emoji {
+    font-size: 2rem;
+    flex-shrink: 0;
+  }
+
+  .choice-text {
+    flex: 1;
+    min-width: 0;
+    display: flex;
+    flex-direction: column;
+    gap: 2px;
+  }
+
+  .choice-text strong {
+    font-size: var(--text-sm);
+    font-weight: 600;
+    color: var(--color-text-primary);
+  }
+
+  .choice-text span {
+    font-size: var(--text-xs);
+    color: var(--color-text-tertiary);
+    line-height: 1.4;
+  }
+
+  .choice-arrow {
+    color: var(--color-text-tertiary);
+    font-size: 1.1rem;
+    flex-shrink: 0;
+  }
+
+  .or-divider {
+    display: flex;
+    align-items: center;
+    gap: var(--space-3);
+    color: var(--color-text-tertiary);
+    font-size: var(--text-xs);
+  }
+
+  .or-divider::before,
+  .or-divider::after {
+    content: '';
+    flex: 1;
+    height: 1px;
+    background: var(--color-border);
+  }
+
+  .new-row {
+    display: flex;
+    gap: var(--space-3);
+  }
+
+  .name-input {
+    flex: 1;
+    background: var(--color-bg);
+    border: 1.5px solid var(--color-border);
+    border-radius: var(--radius-md);
+    padding: 0 var(--space-3);
+    height: 2.5rem;
+    font-size: var(--text-sm);
+    color: var(--color-text-primary);
+    outline: none;
+    transition: border-color var(--transition-fast);
+    font-family: inherit;
+  }
+
+  .name-input:focus {
+    border-color: var(--color-accent);
+  }
+
+  .name-input::placeholder {
+    color: var(--color-text-tertiary);
+  }
+
+  .back-btn {
+    background: none;
+    border: none;
+    color: var(--color-text-tertiary);
+    font-size: var(--text-sm);
+    cursor: pointer;
+    padding: 0;
+    align-self: flex-start;
+    transition: color var(--transition-fast);
+  }
+
+  .back-btn:hover {
+    color: var(--color-text-secondary);
+  }
+
+  /* Invite step */
+  .invite-block {
+    display: flex;
+    gap: var(--space-3);
+  }
+
+  .finish-row {
+    display: flex;
+    justify-content: center;
+  }
+
+  .skip-link {
+    background: none;
+    border: none;
+    color: var(--color-text-tertiary);
+    font-size: var(--text-sm);
+    cursor: pointer;
+    padding: 0;
+    transition: color var(--transition-fast);
+  }
+
+  .skip-link:hover {
+    color: var(--color-text-secondary);
+  }
+
+  /* Mobile */
+  @media (max-width: 640px) {
+    .panel-inner {
+      padding: var(--space-5) var(--space-4);
+    }
+
+    .roles {
+      grid-template-columns: repeat(2, 1fr);
+    }
+
+    .step-header h1 {
+      font-size: var(--text-xl);
+    }
+
+    .choice-card {
+      padding: var(--space-3) var(--space-4);
+    }
+
+    .new-row {
+      flex-direction: column;
+    }
+
+    .invite-block {
+      flex-direction: column;
+    }
+  }
+</style>
diff --git a/apps/web/src/lib/components/workspace/BottomNav.svelte b/apps/web/src/lib/components/workspace/BottomNav.svelte
new file mode 100644
index 0000000..de29644
--- /dev/null
+++ b/apps/web/src/lib/components/workspace/BottomNav.svelte
@@ -0,0 +1,115 @@
+<script lang="ts">
+  import { page } from '$app/stores';
+  import { getContext } from 'svelte';
+  import Icon from '$lib/components/ui/Icon.svelte';
+
+  const openMobileMenu = getContext<() => void>('openMobileMenu');
+
+  const isActive = (path: string) => $page.url.pathname === path || $page.url.pathname.startsWith(path + '/');
+</script>
+
+<nav class="bottom-nav" aria-label="Hauptnavigation">
+  <a href="/dashboard" class="nav-item" class:active={$page.url.pathname === '/dashboard'} aria-label="Übersicht">
+    <Icon name="home" size={22} />
+    <span>Übersicht</span>
+  </a>
+
+  <button class="nav-item" onclick={() => openMobileMenu?.()} aria-label="Projekte">
+    <Icon name="list" size={22} />
+    <span>Projekte</span>
+  </button>
+
+  <a href="/projects/new" class="nav-item nav-new" aria-label="Neues Projekt">
+    <span class="plus-ring">
+      <Icon name="plus" size={20} />
+    </span>
+    <span>Neu</span>
+  </a>
+
+  <a href="/account" class="nav-item" class:active={isActive('/account')} aria-label="Konto">
+    <Icon name="settings" size={22} />
+    <span>Konto</span>
+  </a>
+</nav>
+
+<style>
+  .bottom-nav {
+    display: none;
+    position: fixed;
+    bottom: 0;
+    left: 0;
+    right: 0;
+    z-index: 90;
+    background: rgba(10, 9, 16, 0.92);
+    backdrop-filter: blur(16px);
+    -webkit-backdrop-filter: blur(16px);
+    border-top: 1px solid var(--color-border);
+    padding: 0 var(--space-2) env(safe-area-inset-bottom, 0);
+    height: calc(56px + env(safe-area-inset-bottom, 0px));
+    align-items: stretch;
+    justify-content: space-around;
+    gap: 0;
+  }
+
+  .nav-item {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    justify-content: center;
+    gap: 3px;
+    flex: 1;
+    min-width: 0;
+    padding: var(--space-2) var(--space-1);
+    color: var(--color-text-tertiary);
+    text-decoration: none;
+    font-size: 10px;
+    font-weight: 500;
+    letter-spacing: 0.02em;
+    transition: color var(--transition-fast);
+    background: none;
+    border: none;
+    cursor: pointer;
+    font-family: inherit;
+  }
+
+  .nav-item:hover,
+  .nav-item.active {
+    color: var(--color-text-primary);
+  }
+
+  .nav-item.active {
+    color: var(--color-accent);
+  }
+
+  .nav-new {
+    color: var(--color-text-secondary);
+  }
+
+  .plus-ring {
+    width: 36px;
+    height: 36px;
+    border-radius: 50%;
+    background: var(--color-accent);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    color: white;
+    transition: transform var(--transition-fast), opacity var(--transition-fast);
+    margin-bottom: -2px;
+  }
+
+  .nav-new:hover .plus-ring {
+    transform: scale(1.08);
+    opacity: 0.9;
+  }
+
+  .nav-new span:not(.plus-ring) {
+    font-size: 9px;
+  }
+
+  @media (max-width: 640px) {
+    .bottom-nav {
+      display: flex;
+    }
+  }
+</style>
diff --git a/apps/web/src/routes/(app)/+layout.svelte b/apps/web/src/routes/(app)/+layout.svelte
index 01973bf..d3bdd43 100644
--- a/apps/web/src/routes/(app)/+layout.svelte
+++ b/apps/web/src/routes/(app)/+layout.svelte
@@ -3,6 +3,7 @@
   import { goto } from '$app/navigation';
   import { user, authLoading, checkAuth } from '$lib/stores/auth.js';
   import Sidebar from '$lib/components/workspace/Sidebar.svelte';
+  import BottomNav from '$lib/components/workspace/BottomNav.svelte';
   import ShortcutsModal from '$lib/components/ui/ShortcutsModal.svelte';
   import { onKey } from '$lib/utils/shortcuts.js';
 
@@ -43,6 +44,7 @@
     <main class="main">
       {@render children()}
     </main>
+    <BottomNav />
   </div>
 
   <ShortcutsModal bind:open={shortcutsOpen} />
@@ -79,6 +81,12 @@
     flex-direction: column;
   }
 
+  @media (max-width: 640px) {
+    .main {
+      padding-bottom: calc(56px + env(safe-area-inset-bottom, 0px));
+    }
+  }
+
   .backdrop {
     position: fixed;
     inset: 0;
diff --git a/apps/web/src/routes/(app)/dashboard/+page.svelte b/apps/web/src/routes/(app)/dashboard/+page.svelte
index 5fa70a0..0e824f9 100644
--- a/apps/web/src/routes/(app)/dashboard/+page.svelte
+++ b/apps/web/src/routes/(app)/dashboard/+page.svelte
@@ -6,7 +6,7 @@
   import CoverImage from '$lib/components/ui/CoverImage.svelte';
   import TopBar from '$lib/components/workspace/TopBar.svelte';
   import ActivityItem from '$lib/components/dashboard/ActivityItem.svelte';
-  import WelcomeModal from '$lib/components/dashboard/WelcomeModal.svelte';
+  import OnboardingFlow from '$lib/components/dashboard/OnboardingFlow.svelte';
   import { timeAgo } from '$lib/utils/format.js';
 
   type ProjectMembership = {
@@ -44,8 +44,8 @@
       events = aRes.events;
 
       if (projects.length === 0) {
-        const dismissed = typeof localStorage !== 'undefined' && localStorage.getItem('welcome-dismissed') === '1';
-        if (!dismissed) welcomeOpen = true;
+        const done = typeof localStorage !== 'undefined' && localStorage.getItem('onboarding-done') === '1';
+        if (!done) welcomeOpen = true;
       }
     } finally {
       loading = false;
@@ -148,7 +148,7 @@
   {/if}
 </div>
 
-<WelcomeModal bind:open={welcomeOpen} />
+<OnboardingFlow bind:open={welcomeOpen} />
 
 <style>
   .content {
diff --git a/apps/web/src/routes/(app)/projects/[projectId]/tracks/[trackId]/+page.svelte b/apps/web/src/routes/(app)/projects/[projectId]/tracks/[trackId]/+page.svelte
index 1d56ae9..9542fb6 100644
--- a/apps/web/src/routes/(app)/projects/[projectId]/tracks/[trackId]/+page.svelte
+++ b/apps/web/src/routes/(app)/projects/[projectId]/tracks/[trackId]/+page.svelte
@@ -412,11 +412,11 @@
   {#snippet actions()}
     {#if canUpload}
       <Button size="sm" variant="ghost" onclick={() => { branchFromId = null; branchLabelInput = ''; showUpload = !showUpload; }}>
-        <Icon name="upload" size={14} /> Hochladen
+        <Icon name="upload" size={14} /> <span class="btn-label">Hochladen</span>
       </Button>
     {/if}
     <Button size="sm" variant="ghost" onclick={() => (shareOpen = true)}>
-      <Icon name="share" size={14} /> Teilen
+      <Icon name="share" size={14} /> <span class="btn-label">Teilen</span>
     </Button>
     <button class="panel-toggle" class:open={panelOpen} onclick={() => (panelOpen = !panelOpen)} title="Seitenleiste umschalten" aria-label="Seitenleiste umschalten">
       <Icon name="panel" size={16} />
@@ -983,9 +983,16 @@
   .tabs {
     display: flex;
     border-bottom: 1px solid var(--color-border);
+    overflow-x: auto;
+    scrollbar-width: none;
+    -webkit-overflow-scrolling: touch;
+  }
+  .tabs::-webkit-scrollbar {
+    display: none;
   }
   .tabs button {
     flex: 1;
+    min-width: max-content;
     background: none;
     border: none;
     color: var(--color-text-secondary);
@@ -1000,6 +1007,7 @@
     align-items: center;
     justify-content: center;
     gap: var(--space-2);
+    white-space: nowrap;
   }
   .tabs button:hover {
     color: var(--color-text-primary);
@@ -1031,6 +1039,12 @@
     font-size: var(--text-sm);
   }
 
+  @media (max-width: 480px) {
+    .btn-label {
+      display: none;
+    }
+  }
+
   .panel-toggle {
     background: none;
     border: 1px solid var(--color-border);