.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 22px;
    cursor: pointer;
    color: var(--ink);
    padding: 6px 10px;
    margin-right: 8px;
    flex-shrink: 0;
}

#fehler-melden-mobile {
    display: none;
}

@media (max-width: 640px) {
    #fehler-melden-mobile {
        display: flex;
    }
}

.mobile-overlay {
    display: none;
}

@media (max-width: 640px) {
    .mobile-menu-btn {
        display: flex;
        align-items: center;
    }
    :root {
        --sidebar-w: 0px;
    }
    .app-container {
        grid-template-columns: 1fr;
        height: 100vh;
        overflow: hidden;
    }
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        width: 268px;
        height: 100vh;
        z-index: 1000;
        transform: translateX(-100%);
        transition: transform 0.25s ease;
    }
    .sidebar.mobile-open {
        transform: translateX(0);
        box-shadow: 4px 0 24px rgba(0,0,0,0.2);
    }
    .mobile-overlay.active {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0,0,0,0.4);
        z-index: 999;
    }
    .header {
        grid-column: 1 / -1;
        overflow: hidden;
    }
    .header-center {
        display: none;
    }
    .theme-toggle {
        display: none;
    }
    a[href*="fehler-melden"] {
        display: none;
    }
    .user-chip {
        font-size: 11px;
        padding: 4px 8px;
        gap: 4px;
    }
    .tier-badge {
        font-size: 9px;
        padding: 2px 5px;
    }
    #helpBtn {
        padding: 4px;
        font-size: 16px;
    }
    .main-content {
        overflow-y: auto;
        overflow-x: hidden;
    }
    .view-header {
        padding: 14px;
    }
    .view-header h1 {
        font-size: 22px;
    }
    .view-body {
        padding: 14px;
    }
    .dashboard-grid {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }
    .dashboard-row {
        grid-template-columns: 1fr;
    }
    .quick-action-row {
        grid-template-columns: 1fr 1fr;
        gap: 6px;
    }
    .stat-card,
    .dashboard-card,
    .quick-action-card {
        min-width: 0;
        overflow: hidden;
    }
    .genre-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .expose-steps,
    .export-options {
        grid-template-columns: 1fr;
    }
}