/* ===== MOBILE ===== */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        top: 0;
        left: -280px;
        height: 91vh;
        z-index: 99;
        box-shadow: 2px 0 16px rgba(0, 0, 0, 0.15);
        transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1), background 0.3s, border-color 0.3s;
        display: flex;
        flex-direction: column;
    }

    .sidebar.active {
        left: 0;
    }
    
    .sidebar-header {
        padding: 5px 8px;
        flex-shrink: 0;
    }
    
    .logo-text {
        font-size: 14px;
    }
    
    .sidebar-content {
        flex: 1;
        overflow-y: visible;
        padding: 3px;
        min-height: 0;
    }
    
    .sidebar-section {
        margin-bottom: 1px;
    }
    
    .folder-header {
        padding: 4px 6px;
        font-size: 12px;
    }
    
    .doc-item {
        padding: 4px 6px;
        margin-bottom: 1px;
        font-size: 11px;
    }
    
    .badge-soon {
        font-size: 8px;
        padding: 1px 4px;
    }
    
    .sidebar-footer {
        padding: 4px;
        flex-shrink: 0;
        border-top: 1px solid var(--border);
    }
    
    .my-docs-btn-sidebar,
    .settings-btn {
        padding: 6px;
        font-size: 11px;
        margin-bottom: 3px;
    }
    
    .settings-btn {
        margin-bottom: 0;
    }

    .hamburger-btn {
        display: flex;
    }

    .new-project-btn-mobile {
        display: flex;
    }

    .new-chat-btn-mobile {
        display: flex;
    }

    .message {
        max-width: 90%;
    }

    .welcome-steps {
        gap: 12px;
        margin-bottom: 32px;
    }
    
    .step-card {
        padding: 16px 20px;
    }
    
    .step-number {
        width: 36px;
        height: 36px;
        font-size: 18px;
    }
    
    .doc-dropdown-menu {
        right: 10px;
        top: 50px;
        min-width: 170px;
        max-width: 220px;
    }
    
    .doc-dropdown-menu button {
        padding: 16px 18px !important;
        font-size: 16px !important;
        white-space: nowrap;
        line-height: 1.2;
        display: block !important;
    }
    
    .step-title {
        font-size: 16px;
    }
    
    .step-desc {
        font-size: 13px;
    }
}