* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            /* Unreal Studio Hub - design tokens (premium game-dev, deep navy) */
            --primary: #3AABFF;          /* Primary Blue */
            --primary-dark: #2E8BDB;
            --secondary: #7D6CFF;        /* Secondary Purple */
            --success: #2ECC71;          /* Success Green */
            --warning: #FFBC20;          /* Warning Amber */
            --danger: #FF5C5C;           /* Error Red */
            --info: #2FB7C9;             /* Info Cyan */
            --dark-bg: #080F16;          /* BG Primary */
            --bg-2: #0F1420;             /* BG Secondary */
            --bg-3: #121B27;             /* BG Tertiary */
            --elevated: #181E2B;         /* Elevated */
            --panel-bg: rgba(18, 27, 39, 0.92);
            --panel-2: #20283C;
            --border: #2B3346;
            --border-subtle: #20283C;
            --divider: #1B2233;
            --text-primary: #E6EAF2;
            --text-secondary: #9BA6B8;
            --text-tertiary: #6B7588;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background: linear-gradient(135deg, var(--dark-bg) 0%, #0F1420 50%, #0B1019 100%);
            color: var(--text-primary);
            min-height: 100vh;
            overflow: hidden;
        }

        .app-container {
            display: grid;
            grid-template-columns: 60px 240px 1fr 300px;
            grid-template-rows: 50px 1fr 30px;
            height: 100vh;
            gap: 1px;
            background: rgba(58, 171, 255, 0.1);
        }

        .welcome-screen {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, #080F16 0%, #0F1420 50%, #0B1019 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 5000;
        }

        .welcome-content {
            background: rgba(18, 27, 39, 0.95);
            border: 2px solid var(--primary);
            border-radius: 20px;
            padding: 40px;
            max-width: 600px;
            width: 90%;
            text-align: center;
            animation: fadeIn 0.5s ease;
        }

        .welcome-logo {
            font-size: 4em;
            margin-bottom: 20px;
        }

        .welcome-title {
            font-size: 2.5em;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 20px;
        }

        .welcome-subtitle {
            color: var(--text-secondary);
            margin-bottom: 30px;
        }

        .welcome-options {
            display: flex;
            gap: 20px;
            justify-content: center;
            margin-bottom: 20px;
        }

        .welcome-btn {
            flex: 1;
            padding: 15px 30px;
            border: none;
            border-radius: 10px;
            font-size: 1.1em;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .welcome-btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white;
        }

        .welcome-btn-secondary {
            background: rgba(43, 51, 70, 0.3);
            color: var(--text-primary);
            border: 1px solid var(--primary);
        }

        .welcome-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(58, 171, 255, 0.3);
        }

        /* Header */
        .header {
            grid-column: 1 / -1;
            background: linear-gradient(135deg, rgba(22, 30, 43, 0.95), rgba(18, 27, 39, 0.95));
            border-bottom: 2px solid var(--primary);
            display: flex;
            align-items: center;
            padding: 0 20px;
            gap: 20px;
        }

        .logo {
            font-size: 1.4em;
            font-weight: bold;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: flex;
            align-items: center;
            gap: 10px;
            cursor: pointer;
        }

        .search-bar {
            flex: 1;
            max-width: 400px;
            position: relative;
        }

        .search-bar input {
            width: 100%;
            padding: 8px 35px 8px 12px;
            background: rgba(11, 16, 25, 0.8);
            border: 1px solid rgba(58, 171, 255, 0.2);
            border-radius: 20px;
            color: var(--text-primary);
            font-size: 0.9em;
        }

        .search-bar input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 10px rgba(58, 171, 255, 0.3);
        }

        /* Activity Bar */
        .activity-bar {
            background: rgba(11, 16, 25, 0.95);
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 10px 0;
            gap: 5px;
        }

        .activity-btn {
            width: 45px;
            height: 45px;
            border: none;
            background: transparent;
            color: var(--text-secondary);
            cursor: pointer;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3em;
            transition: all 0.2s ease;
            position: relative;
        }

        .activity-btn:hover {
            background: rgba(58, 171, 255, 0.1);
            color: var(--primary);
        }

        .activity-btn.active {
            background: rgba(58, 171, 255, 0.2);
            color: var(--primary);
            border-left: 3px solid var(--primary);
        }

        .activity-btn .badge {
            position: absolute;
            top: 8px;
            right: 8px;
            background: var(--danger);
            color: white;
            border-radius: 50%;
            width: 16px;
            height: 16px;
            font-size: 0.7em;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* Sidebar */
        .sidebar {
            background: rgba(22, 30, 43, 0.95);
            padding: 15px;
            overflow-y: auto;
            border-right: 1px solid rgba(58, 171, 255, 0.1);
        }

        .sidebar-section {
            margin-bottom: 20px;
        }

        .sidebar-title {
            color: var(--primary);
            font-size: 0.85em;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .tree-item {
            padding: 6px 10px;
            cursor: pointer;
            border-radius: 4px;
            font-size: 0.9em;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: all 0.2s ease;
            margin-bottom: 2px;
            user-select: none;
        }

        .tree-item:hover {
            background: rgba(58, 171, 255, 0.1);
        }

        .tree-item.active {
            background: rgba(58, 171, 255, 0.2);
            color: var(--primary);
        }

        /* Main Content */
        .main-content {
            background: rgba(25, 25, 35, 0.95);
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .tabs-container {
            display: flex;
            background: rgba(22, 30, 43, 0.95);
            border-bottom: 1px solid rgba(58, 171, 255, 0.1);
            padding: 0 10px;
            overflow-x: auto;
            gap: 5px;
        }

        .tab {
            padding: 10px 20px;
            background: transparent;
            border: none;
            color: var(--text-secondary);
            cursor: pointer;
            border-bottom: 2px solid transparent;
            transition: all 0.2s ease;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .tab:hover {
            color: var(--text-primary);
        }

        .tab.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
            background: rgba(58, 171, 255, 0.05);
        }

        .workspace {
            flex: 1;
            padding: 20px;
            overflow-y: auto;
            position: relative;
        }

        .view-section {
            display: none;
        }

        .view-section.active {
            display: block;
            animation: fadeIn 0.3s ease;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* Inspector Panel */
        .inspector {
            background: rgba(22, 30, 43, 0.95);
            padding: 15px;
            overflow-y: auto;
            border-left: 1px solid rgba(58, 171, 255, 0.1);
        }

        .inspector-section {
            margin-bottom: 20px;
            background: rgba(11, 16, 25, 0.5);
            border-radius: 8px;
            padding: 12px;
        }

        .inspector-title {
            color: var(--primary);
            font-size: 0.95em;
            font-weight: 600;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* Status Bar */
        .status-bar {
            grid-column: 1 / -1;
            background: rgba(11, 16, 25, 0.95);
            border-top: 1px solid rgba(58, 171, 255, 0.1);
            display: flex;
            align-items: center;
            padding: 0 15px;
            font-size: 0.85em;
            gap: 20px;
        }

        .status-item {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .status-indicator {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--success);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { box-shadow: 0 0 0 0 rgba(76, 175, 80, 0.7); }
            70% { box-shadow: 0 0 0 8px rgba(76, 175, 80, 0); }
            100% { box-shadow: 0 0 0 0 rgba(76, 175, 80, 0); }
        }

        /* Cards */
        .card {
            background: var(--panel-bg);
            border: 1px solid rgba(58, 171, 255, 0.2);
            border-radius: 10px;
            padding: 15px;
            margin-bottom: 15px;
            transition: all 0.3s ease;
        }

        .card:hover {
            border-color: var(--primary);
            box-shadow: 0 4px 20px rgba(58, 171, 255, 0.2);
        }

        .card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 12px;
        }

        .card-title {
            font-size: 1.1em;
            color: var(--primary);
            font-weight: 600;
        }

        .metric-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 15px;
            margin-bottom: 20px;
        }

        .metric-card {
            background: linear-gradient(135deg, rgba(58, 171, 255, 0.1), rgba(0, 150, 200, 0.05));
            border: 1px solid rgba(58, 171, 255, 0.3);
            border-radius: 8px;
            padding: 15px;
            text-align: center;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .metric-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(58, 171, 255, 0.3);
        }

        .metric-value {
            font-size: 2em;
            font-weight: bold;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .metric-label {
            font-size: 0.85em;
            color: var(--text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-top: 5px;
        }

        /* Asset Grid */
        .asset-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
            gap: 15px;
        }

        .asset-item {
            background: rgba(22, 30, 43, 0.8);
            border: 1px solid rgba(58, 171, 255, 0.1);
            border-radius: 8px;
            padding: 10px;
            cursor: pointer;
            transition: all 0.2s ease;
            text-align: center;
            position: relative;
        }

        .asset-item:hover {
            background: rgba(40, 40, 50, 0.9);
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .asset-thumbnail {
            width: 100%;
            height: 80px;
            background: linear-gradient(135deg, rgba(58, 171, 255, 0.1), rgba(0, 150, 200, 0.1));
            border-radius: 4px;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2em;
            color: var(--primary);
        }

        .asset-name {
            font-size: 0.85em;
            color: var(--text-primary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* Team Members */
        .team-list {
            display: grid;
            gap: 10px;
        }

        .team-member {
            display: flex;
            align-items: center;
            gap: 15px;
            padding: 12px;
            background: rgba(11, 16, 25, 0.5);
            border-radius: 8px;
            transition: all 0.2s ease;
        }

        .team-member:hover {
            background: rgba(58, 171, 255, 0.1);
        }

        .member-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: white;
        }

        .member-info {
            flex: 1;
        }

        .member-name {
            font-weight: 600;
            margin-bottom: 2px;
        }

        .member-role {
            font-size: 0.85em;
            color: var(--text-secondary);
        }

        .member-status {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--success);
        }

        .member-status.offline {
            background: var(--text-secondary);
        }

        /* Forms */
        .form-group {
            margin-bottom: 15px;
        }

        .form-label {
            display: block;
            margin-bottom: 5px;
            color: var(--text-secondary);
            font-size: 0.9em;
            font-weight: 500;
        }

        .form-input, .form-select, .form-textarea {
            width: 100%;
            padding: 8px 12px;
            background: rgba(11, 16, 25, 0.8);
            border: 1px solid rgba(58, 171, 255, 0.2);
            border-radius: 5px;
            color: var(--text-primary);
            font-size: 0.9em;
            transition: all 0.2s ease;
        }

        .form-input:focus, .form-select:focus, .form-textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 10px rgba(58, 171, 255, 0.2);
        }

        .form-textarea {
            min-height: 80px;
            resize: vertical;
        }

        /* Buttons */
        .btn {
            padding: 8px 16px;
            border: none;
            border-radius: 5px;
            font-size: 0.9em;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s ease;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .btn:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white;
        }

        .btn-primary:hover:not(:disabled) {
            transform: translateY(-1px);
            box-shadow: 0 4px 15px rgba(58, 171, 255, 0.4);
        }

        .btn-success {
            background: linear-gradient(135deg, var(--success), #27AE60);
            color: white;
        }

        .btn-danger {
            background: linear-gradient(135deg, var(--danger), #E04848);
            color: white;
        }

        .btn-info {
            background: linear-gradient(135deg, var(--info), #1976d2);
            color: white;
        }

        .btn-warning {
            background: linear-gradient(135deg, var(--warning), #E0A91B);
            color: white;
        }

        .btn-group {
            display: flex;
            gap: 10px;
            margin-top: 15px;
        }

        /* Progress Bars */
        .progress-bar {
            width: 100%;
            height: 8px;
            background: rgba(58, 171, 255, 0.1);
            border-radius: 4px;
            overflow: hidden;
            margin: 10px 0;
        }

        .progress-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--primary), var(--primary-dark));
            border-radius: 4px;
            transition: width 0.3s ease;
        }

        /* Notification */
        .notification {
            position: fixed;
            top: 70px;
            right: 20px;
            padding: 12px 20px;
            background: linear-gradient(135deg, rgba(58, 171, 255, 0.95), rgba(0, 150, 200, 0.95));
            color: white;
            border-radius: 8px;
            box-shadow: 0 4px 20px rgba(58, 171, 255, 0.4);
            transform: translateX(400px);
            transition: transform 0.3s ease;
            z-index: 1000;
            max-width: 300px;
        }

        .notification.show {
            transform: translateX(0);
        }

        .notification.error {
            background: linear-gradient(135deg, rgba(244, 67, 54, 0.95), rgba(211, 47, 47, 0.95));
        }

        .notification.warning {
            background: linear-gradient(135deg, rgba(255, 152, 0, 0.95), rgba(245, 124, 0, 0.95));
        }

        .notification.success {
            background: linear-gradient(135deg, rgba(76, 175, 80, 0.95), rgba(56, 142, 60, 0.95));
        }

        /* Modal */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.8);
            z-index: 2000;
            align-items: center;
            justify-content: center;
        }

        .modal.show {
            display: flex;
        }

        .modal-content {
            background: var(--panel-bg);
            border: 1px solid var(--primary);
            border-radius: 10px;
            padding: 25px;
            max-width: 500px;
            width: 90%;
            max-height: 80vh;
            overflow-y: auto;
            animation: fadeIn 0.3s ease;
        }

        .modal-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
        }

        .modal-title {
            font-size: 1.3em;
            color: var(--primary);
            font-weight: 600;
        }

        .modal-close {
            background: none;
            border: none;
            color: var(--text-secondary);
            font-size: 1.5em;
            cursor: pointer;
        }

        .modal-close:hover {
            color: var(--danger);
        }

        /* Validation List */
        .validation-list {
            max-height: 400px;
            overflow-y: auto;
            background: rgba(11, 16, 25, 0.5);
            border-radius: 8px;
            padding: 10px;
        }

        .validation-item {
            padding: 10px;
            margin-bottom: 8px;
            border-radius: 4px;
            border-left: 3px solid transparent;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .validation-item.error {
            background: rgba(244, 67, 54, 0.1);
            border-left-color: var(--danger);
        }

        .validation-item.warning {
            background: rgba(255, 152, 0, 0.1);
            border-left-color: var(--warning);
        }

        .validation-item.success {
            background: rgba(76, 175, 80, 0.1);
            border-left-color: var(--success);
        }

        /* Activity Feed */
        .activity-feed {
            max-height: 400px;
            overflow-y: auto;
        }

        .activity-item {
            padding: 12px;
            border-left: 2px solid rgba(58, 171, 255, 0.3);
            margin-left: 10px;
            margin-bottom: 15px;
            position: relative;
        }

        .activity-item::before {
            content: '';
            position: absolute;
            left: -6px;
            top: 15px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--primary);
        }

        .activity-time {
            font-size: 0.8em;
            color: var(--text-secondary);
            margin-bottom: 5px;
        }

        .activity-content {
            font-size: 0.9em;
        }

        /* Floating Action Button */
        .fab {
            position: fixed;
            bottom: 50px;
            right: 30px;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white;
            border: none;
            font-size: 24px;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(58, 171, 255, 0.4);
            transition: all 0.3s ease;
            z-index: 100;
        }

        .fab:hover {
            transform: scale(1.1);
            box-shadow: 0 6px 30px rgba(58, 171, 255, 0.6);
        }

        /* Scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }

        ::-webkit-scrollbar-track {
            background: rgba(11, 16, 25, 0.8);
        }

        ::-webkit-scrollbar-thumb {
            background: linear-gradient(135deg, rgba(58, 171, 255, 0.3), rgba(0, 150, 200, 0.3));
            border-radius: 4px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: linear-gradient(135deg, rgba(58, 171, 255, 0.5), rgba(0, 150, 200, 0.5));
        }

        /* Loading */
        .loading {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }

        .spinner {
            width: 40px;
            height: 40px;
            border: 3px solid rgba(58, 171, 255, 0.2);
            border-top: 3px solid var(--primary);
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .hidden {
            display: none !important;
        }

        /* Selection Styles */
        .asset-item.selected {
            border-color: var(--primary);
            background: rgba(58, 171, 255, 0.2);
            box-shadow: 0 0 10px rgba(58, 171, 255, 0.3);
        }

        .asset-item .select-checkbox {
            position: absolute;
            top: 5px;
            left: 5px;
            width: 18px;
            height: 18px;
            accent-color: var(--primary);
            cursor: pointer;
        }

        .selection-bar {
            display: flex;
            align-items: center;
            gap: 15px;
            padding: 10px 15px;
            background: rgba(58, 171, 255, 0.1);
            border: 1px solid var(--primary);
            border-radius: 8px;
            margin-bottom: 15px;
        }

        .selection-count {
            color: var(--primary);
            font-weight: 600;
        }

        /* Search Results */
        .search-results {
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: rgba(22, 30, 43, 0.98);
            border: 1px solid var(--primary);
            border-radius: 8px;
            max-height: 400px;
            overflow-y: auto;
            z-index: 1000;
            margin-top: 5px;
            display: none;
        }

        .search-results.active {
            display: block;
        }

        .search-result-item {
            padding: 10px 15px;
            cursor: pointer;
            border-bottom: 1px solid rgba(58, 171, 255, 0.1);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .search-result-item:hover {
            background: rgba(58, 171, 255, 0.1);
        }

        .search-result-item .result-icon {
            font-size: 1.2em;
        }

        .search-result-item .result-info {
            flex: 1;
        }

        .search-result-item .result-name {
            font-weight: 500;
        }

        .search-result-item .result-type {
            font-size: 0.8em;
            color: var(--text-secondary);
        }

        .search-result-item .result-path {
            font-size: 0.75em;
            color: var(--text-secondary);
        }

        /* Filter Bar */
        .filter-bar {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 15px;
            flex-wrap: wrap;
        }

        .filter-btn {
            padding: 6px 12px;
            border: 1px solid rgba(58, 171, 255, 0.3);
            background: transparent;
            color: var(--text-secondary);
            border-radius: 15px;
            cursor: pointer;
            font-size: 0.85em;
            transition: all 0.2s ease;
        }

        .filter-btn:hover, .filter-btn.active {
            background: rgba(58, 171, 255, 0.2);
            border-color: var(--primary);
            color: var(--primary);
        }

        .sort-select {
            padding: 6px 12px;
            background: rgba(11, 16, 25, 0.8);
            border: 1px solid rgba(58, 171, 255, 0.3);
            border-radius: 5px;
            color: var(--text-primary);
            font-size: 0.85em;
        }

        /* Asset List View */
        .asset-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .asset-list-item {
            display: flex;
            align-items: center;
            gap: 15px;
            padding: 12px 15px;
            background: rgba(22, 30, 43, 0.8);
            border: 1px solid rgba(58, 171, 255, 0.1);
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .asset-list-item:hover {
            background: rgba(40, 40, 50, 0.9);
            border-color: var(--primary);
        }

        .asset-list-item.selected {
            border-color: var(--primary);
            background: rgba(58, 171, 255, 0.15);
        }

        .asset-list-item .asset-icon {
            font-size: 1.5em;
            width: 40px;
            text-align: center;
        }

        .asset-list-item .asset-details {
            flex: 1;
        }

        .asset-list-item .asset-meta {
            display: flex;
            gap: 20px;
            color: var(--text-secondary);
            font-size: 0.85em;
        }

        /* View Toggle */
        .view-toggle {
            display: flex;
            gap: 5px;
            margin-left: auto;
        }

        .view-toggle button {
            padding: 6px 10px;
            background: transparent;
            border: 1px solid rgba(58, 171, 255, 0.3);
            color: var(--text-secondary);
            cursor: pointer;
            border-radius: 4px;
        }

        .view-toggle button.active {
            background: rgba(58, 171, 255, 0.2);
            border-color: var(--primary);
            color: var(--primary);
        }

        @media (max-width: 1200px) {
            .app-container {
                grid-template-columns: 60px 200px 1fr;
            }
            .inspector { display: none; }
        }

        @media (max-width: 768px) {
            .app-container {
                grid-template-columns: 60px 1fr;
            }
            .sidebar { display: none; }
        }

/* ============ ADDITIONAL FEATURES ============ */

/* Drop Zone */
.drop-zone {
    border: 2px dashed rgba(58, 171, 255, 0.3);
    border-radius: 10px;
    padding: 40px;
    text-align: center;
    transition: all 0.3s ease;
    margin-bottom: 20px;
    background: rgba(58, 171, 255, 0.02);
}

.drop-zone.drag-over {
    border-color: var(--primary);
    background: rgba(58, 171, 255, 0.1);
    transform: scale(1.02);
}

.drop-zone-icon {
    font-size: 3em;
    margin-bottom: 10px;
    color: var(--primary);
}

.drop-zone-text {
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.drop-zone-hint {
    font-size: 0.85em;
    color: var(--text-secondary);
    opacity: 0.7;
}

/* Recent Projects */
.recent-projects {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid rgba(58, 171, 255, 0.2);
}

.recent-projects-title {
    font-size: 0.9em;
    color: var(--text-secondary);
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.recent-project-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 15px;
    background: rgba(22, 30, 43, 0.5);
    border: 1px solid rgba(58, 171, 255, 0.1);
    border-radius: 8px;
    margin-bottom: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.recent-project-item:hover {
    background: rgba(58, 171, 255, 0.1);
    border-color: var(--primary);
}

.recent-project-icon {
    font-size: 1.5em;
}

.recent-project-info {
    flex: 1;
}

.recent-project-name {
    font-weight: 600;
    margin-bottom: 3px;
}

.recent-project-path {
    font-size: 0.8em;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.recent-project-delete {
    opacity: 0;
    background: none;
    border: none;
    color: var(--danger);
    cursor: pointer;
    padding: 5px;
    font-size: 1.2em;
    transition: opacity 0.2s ease;
}

.recent-project-item:hover .recent-project-delete {
    opacity: 1;
}

/* Keyboard Shortcuts Modal */
.shortcuts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.shortcut-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px;
    background: rgba(11, 16, 25, 0.5);
    border-radius: 5px;
}

.shortcut-keys {
    display: flex;
    gap: 5px;
}

.key {
    padding: 4px 8px;
    background: rgba(58, 171, 255, 0.2);
    border: 1px solid var(--primary);
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.85em;
    color: var(--primary);
}

/* Undo/Redo Bar */
.undo-bar {
    position: fixed;
    bottom: 120px;
    right: 30px;
    display: flex;
    gap: 5px;
    z-index: 99;
}

.undo-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(18, 27, 39, 0.95);
    border: 1px solid rgba(58, 171, 255, 0.3);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.2em;
    transition: all 0.2s ease;
}

.undo-btn:hover:not(:disabled) {
    background: rgba(58, 171, 255, 0.2);
    border-color: var(--primary);
    color: var(--primary);
}

.undo-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* Folder Browser */
.folder-browser {
    max-height: 300px;
    overflow-y: auto;
    background: rgba(11, 16, 25, 0.5);
    border-radius: 8px;
    padding: 10px;
    margin-bottom: 15px;
}

.folder-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.folder-item:hover {
    background: rgba(58, 171, 255, 0.1);
}

.folder-item.selected {
    background: rgba(58, 171, 255, 0.2);
    border: 1px solid var(--primary);
}

.folder-item-icon {
    color: var(--warning);
}

.file-count {
    margin-left: auto;
    font-size: 0.8em;
    color: var(--text-secondary);
}

/* Toast for keyboard shortcuts hint */
.keyboard-hint {
    position: fixed;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(18, 27, 39, 0.95);
    border: 1px solid var(--primary);
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.85em;
    color: var(--text-secondary);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1000;
}

.keyboard-hint.show {
    opacity: 1;
}

/* Project Scan Progress */
.scan-progress {
    margin-top: 15px;
}

.scan-progress-text {
    display: flex;
    justify-content: space-between;
    margin-bottom: 5px;
    font-size: 0.85em;
    color: var(--text-secondary);
}

.scan-file-name {
    max-width: 300px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Asset Invalid Naming */
.asset-item.invalid {
    border-color: var(--warning);
}

.asset-item.invalid::after {
    content: '⚠';
    position: absolute;
    top: 5px;
    right: 5px;
    color: var(--warning);
}