:root {
            --primary: #6366f1;
            --primary-dark: #4f46e5;
            --primary-light: #818cf8;
            --secondary: #14b8a6;
            --secondary-dark: #0d9488;
            --success: #10b981;
            --warning: #f59e0b;
            --danger: #ef4444;
            --info: #3b82f6;
            
            --bg-main: #f8fafc;
            --bg-card: #ffffff;
            --text-primary: #1e293b;
            --text-secondary: #64748b;
            --border-color: #e2e8f0;
            
            --sidebar-width: 260px;
            --sidebar-collapsed: 80px;
            --top-bar-height: 70px;
            
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
            --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
        }

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

        body {
            font-family: 'Inter', 'Segoe UI', -apple-system, sans-serif;
            background: var(--bg-main);
            color: var(--text-primary);
            line-height: 1.6;
        }

        /* Sidebar */
        .sidebar {
            position: fixed;
            left: 0;
            top: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: white;
            box-shadow: var(--shadow);
            padding: 24px 0;
            transition: all 0.3s ease;
            z-index: 1000;
            overflow-y: auto;
        }

        .logo-container {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 24px;
            margin-bottom: 32px;
        }

        .logo-container i {
            font-size: 32px;
            color: var(--primary);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 0 12px;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            color: var(--text-secondary);
            text-decoration: none;
            border-radius: 10px;
            transition: all 0.3s ease;
            font-weight: 500;
        }

        .nav-link:hover {
            background: var(--bg-main);
            color: var(--primary);
        }

        .nav-link.active {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: white;
            box-shadow: var(--shadow);
        }

        .nav-link i {
            font-size: 18px;
            width: 20px;
        }

        /* Main Content */
        .main-content {
            margin-left: var(--sidebar-width);
            padding: 24px;
            min-height: 100vh;
            transition: margin-left 0.3s ease;
        }

        /* Top Bar */
        .top-bar {
            background: white;
            border-radius: 16px;
            padding: 16px 24px;
            margin-bottom: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            box-shadow: var(--shadow-sm);
            gap: 20px;
            flex-wrap: wrap;
        }

        .search-container {
            position: relative;
            flex: 1;
            max-width: 500px;
        }

        .search-container i {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-secondary);
        }

        .search-input {
            width: 100%;
            padding: 12px 16px 12px 45px;
            border: 2px solid var(--border-color);
            border-radius: 10px;
            font-size: 14px;
            transition: all 0.3s ease;
        }

        .search-input:focus {
            outline: none;
            border-color: var(--primary);
        }

        .top-bar-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .icon-btn {
            position: relative;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            border: none;
            background: var(--bg-main);
            color: var(--text-secondary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
            font-size: 18px;
        }

        .icon-btn:hover {
            background: var(--primary);
            color: white;
            transform: translateY(-2px);
        }

        .notification-badge {
            position: absolute;
            top: -4px;
            right: -4px;
            background: var(--danger);
            color: white;
            font-size: 10px;
            padding: 2px 6px;
            border-radius: 10px;
            font-weight: 600;
            min-width: 18px;
            text-align: center;
        }

        .profile-section {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .profile-dropdown {
            position: relative;
        }

        .profile-btn {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 12px;
            background: white;
            border: 2px solid var(--border-color);
            border-radius: 10px;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .profile-btn:hover {
            border-color: var(--primary);
        }

        .profile-btn .profile-avatar {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 600;
            font-size: 16px;
        }

        .profile-btn span {
            font-weight: 600;
            color: var(--text-primary);
        }

        .add-stock-btn {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: var(--shadow);
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .add-stock-btn:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        .dropdown-menu {
            position: absolute;
            top: calc(100% + 8px);
            right: 0;
            background: white;
            border-radius: 12px;
            box-shadow: var(--shadow-lg);
            min-width: 200px;
            padding: 8px;
            display: none;
            z-index: 1000;
        }

        .dropdown-menu.show {
            display: block;
            animation: fadeIn 0.3s ease;
        }

        .dropdown-menu a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 12px;
            color: var(--text-secondary);
            text-decoration: none;
            border-radius: 8px;
            transition: all 0.3s ease;
        }

        .dropdown-menu a:hover {
            background: var(--bg-main);
            color: var(--primary);
        }

        /* Notification Dropdown */
        .notification-dropdown {
            position: relative;
        }

        .notification-panel {
            position: absolute;
            top: calc(100% + 8px);
            right: 0;
            background: white;
            border-radius: 12px;
            box-shadow: var(--shadow-xl);
            width: 320px;
            max-height: 400px;
            overflow-y: auto;
            display: none;
            z-index: 1000;
        }

        .notification-panel.show {
            display: block;
            animation: fadeIn 0.3s ease;
        }

        .notification-header {
            padding: 16px;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .notification-header h3 {
            font-size: 16px;
            font-weight: 600;
        }

        .mark-read-btn {
            color: var(--primary);
            background: none;
            border: none;
            font-size: 12px;
            cursor: pointer;
            font-weight: 600;
        }

        .notification-item {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border-color);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .notification-item:hover {
            background: var(--bg-main);
        }

        .notification-item.unread {
            background: rgba(99, 102, 241, 0.05);
        }

        .notification-item .notification-content {
            display: flex;
            gap: 12px;
        }

        .notification-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }

        .notification-icon.warning {
            background: rgba(245, 158, 11, 0.1);
            color: var(--warning);
        }

        .notification-icon.success {
            background: rgba(16, 185, 129, 0.1);
            color: var(--success);
        }

        .notification-icon.info {
            background: rgba(59, 130, 246, 0.1);
            color: var(--info);
        }

        .notification-text h4 {
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 2px;
        }

        .notification-text p {
            font-size: 12px;
            color: var(--text-secondary);
        }

        .notification-time {
            font-size: 11px;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        /* Dashboard Container */
        .dashboard-container {
            max-width: 1400px;
        }

        .page-header {
            margin-bottom: 24px;
        }

        .page-header h1 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .page-header p {
            color: var(--text-secondary);
        }

        /* Stats Grid */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
            margin-bottom: 24px;
        }

        .stat-card {
            background: white;
            border-radius: 16px;
            padding: 24px;
            box-shadow: var(--shadow-sm);
            display: flex;
            gap: 16px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .stat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light));
        }

        .stat-card.secondary::before {
            background: linear-gradient(90deg, var(--secondary), var(--secondary-dark));
        }

        .stat-card.success::before {
            background: linear-gradient(90deg, var(--success), #059669);
        }

        .stat-card.warning::before {
            background: linear-gradient(90deg, var(--warning), #d97706);
        }

        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        .stat-icon {
            width: 60px;
            height: 60px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(99, 102, 241, 0.05));
            color: var(--primary);
        }

        .stat-card.secondary .stat-icon {
            background: linear-gradient(135deg, rgba(20, 184, 166, 0.1), rgba(20, 184, 166, 0.05));
            color: var(--secondary);
        }

        .stat-card.success .stat-icon {
            background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.05));
            color: var(--success);
        }

        .stat-card.warning .stat-icon {
            background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(245, 158, 11, 0.05));
            color: var(--warning);
        }

        .stat-content h3 {
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }

        .stat-value {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .stat-trend {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
        }

        .stat-trend.positive {
            color: var(--success);
        }

        /* Content Grid */
        .content-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 24px;
        }

        .content-card {
            background: white;
            border-radius: 16px;
            box-shadow: var(--shadow-sm);
        }

        .card-header {
            padding: 20px 24px;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .card-header h2 {
            font-size: 18px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .card-header i {
            color: var(--primary);
        }

        .link-btn {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            font-size: 14px;
            transition: all 0.3s ease;
        }

        .link-btn:hover {
            color: var(--primary-dark);
        }

        .card-body {
            padding: 24px;
        }

        /* Table */
        .table-responsive {
            overflow-x: auto;
            margin-bottom: 16px;
        }

        .data-table {
            width: 100%;
            border-collapse: collapse;
        }

        .data-table thead {
            background: var(--bg-main);
        }

        .data-table th {
            padding: 12px 16px;
            text-align: left;
            font-size: 12px;
            font-weight: 600;
            text-transform: uppercase;
            color: var(--text-secondary);
            letter-spacing: 0.5px;
        }

        .data-table td {
            padding: 16px;
            border-bottom: 1px solid var(--border-color);
        }

        .data-table tr:hover {
            background: var(--bg-main);
        }

        .empty-state {
            text-align: center;
            padding: 60px 20px;
        }

        .empty-state i {
            font-size: 48px;
            color: var(--text-secondary);
            opacity: 0.5;
            margin-bottom: 12px;
        }

        .empty-state p {
            color: var(--text-secondary);
        }

        .table-pagination {
            display: flex;
            justify-content: center;
            gap: 8px;
        }

        .page-btn {
            padding: 8px 14px;
            border: 2px solid var(--border-color);
            background: white;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all 0.3s ease;
        }

        .page-btn:hover, .page-btn.active {
            background: var(--primary);
            color: white;
            border-color: var(--primary);
        }

        /* Chart */
        .chart-tabs {
            display: flex;
            gap: 8px;
            margin-bottom: 20px;
        }

        .chart-tab {
            padding: 8px 16px;
            border: 2px solid var(--border-color);
            background: white;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .chart-tab.active {
            background: var(--primary);
            color: white;
            border-color: var(--primary);
        }

        .chart-placeholder {
            height: 200px;
            background: var(--bg-main);
            border-radius: 12px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }

        .chart-placeholder i {
            font-size: 48px;
            color: var(--text-secondary);
            opacity: 0.3;
            margin-bottom: 8px;
        }

        .chart-legend {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        .legend-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
        }

        .legend-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
        }

        .legend-dot.primary {
            background: var(--primary);
        }

        .legend-dot.secondary {
            background: var(--secondary);
        }

        .legend-dot.success {
            background: var(--success);
        }

        /* Modal */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 2000;
            align-items: center;
            justify-content: center;
            backdrop-filter: blur(4px);
        }

        .modal.show {
            display: flex;
            animation: fadeIn 0.3s ease;
        }

        .modal-dialog {
            background: white;
            border-radius: 16px;
            width: 90%;
            max-width: 600px;
            max-height: 90vh;
            overflow-y: auto;
            box-shadow: var(--shadow-xl);
        }

        .modal-header {
            padding: 24px;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .modal-header h2 {
            font-size: 20px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .close-btn {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            border: none;
            background: var(--bg-main);
            color: var(--text-secondary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }

        .close-btn:hover {
            background: var(--danger);
            color: white;
        }

        .modal-body {
            padding: 24px;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 12px;
            border: 2px solid var(--border-color);
            border-radius: 8px;
            font-size: 14px;
            transition: all 0.3s ease;
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary);
        }

        .password-input {
            position: relative;
        }

        .toggle-password {
            position: absolute;
            right: 12px;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: var(--text-secondary);
            cursor: pointer;
            padding: 4px;
        }

        .modal-actions {
            display: flex;
            gap: 12px;
            justify-content: flex-end;
            margin-top: 24px;
        }

        .btn {
            padding: 12px 24px;
            border-radius: 10px;
            border: none;
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all 0.3s ease;
        }

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

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        .btn-secondary {
            background: var(--bg-main);
            color: var(--text-secondary);
        }

        .btn-secondary:hover {
            background: var(--border-color);
        }

        /* Mobile Toggle */
        .mobile-toggle {
            display: none;
            position: fixed;
            bottom: 20px;
            left: 20px;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white;
            border: none;
            font-size: 20px;
            cursor: pointer;
            box-shadow: var(--shadow-xl);
            z-index: 999;
        }

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

        /* Notification Toast */
        .notification-toast {
            position: fixed;
            top: 20px;
            right: 20px;
            background: white;
            padding: 16px 20px;
            border-radius: 12px;
            box-shadow: var(--shadow-xl);
            display: flex;
            align-items: center;
            gap: 12px;
            z-index: 9999;
            animation: slideIn 0.3s ease;
        }
        
        .notification-toast.success {
            border-left: 4px solid var(--success);
        }
        
        .notification-toast.error {
            border-left: 4px solid var(--danger);
        }
        
        .notification-toast i {
            font-size: 20px;
        }
        
        .notification-toast.success i {
            color: var(--success);
        }
        
        .notification-toast.error i {
            color: var(--danger);
        }
        
        @keyframes slideIn {
            from {
                transform: translateX(400px);
                opacity: 0;
            }
            to {
                transform: translateX(0);
                opacity: 1;
            }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
            }
            
            .sidebar.show {
                transform: translateX(0);
            }
            
            .main-content {
                margin-left: 0;
            }
            
            .mobile-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            
            .stats-grid {
                grid-template-columns: 1fr;
            }
            
            .form-row {
                grid-template-columns: 1fr;
            }
            
            .top-bar {
                flex-direction: column;
                align-items: stretch;
            }
            
            .search-container {
                max-width: 100%;
            }

            .profile-section {
                flex-direction: column;
                align-items: stretch;
            }

            .add-stock-btn {
                justify-content: center;
            }
        }

        @media (max-width: 480px) {
            .top-bar-actions {
                justify-content: space-between;
                width: 100%;
            }

            .notification-panel {
                width: calc(100vw - 40px);
                right: -20px;
            }
        }

        /* ── Profile Dropdown ── */
        .profile-dropdown { position: relative; }

        .profile-btn {
            display: flex;
            align-items: center;
            gap: 10px;
            background: var(--bg-main);
            border: 1.5px solid var(--border-color);
            border-radius: 12px;
            padding: 8px 14px;
            cursor: pointer;
            font-family: inherit;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            transition: all 0.2s;
        }
        .profile-btn:hover { border-color: var(--primary); background: white; }

        .profile-avatar {
            width: 32px; height: 32px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 8px;
            display: flex; align-items: center; justify-content: center;
            color: white; font-size: 14px;
        }

        .dropdown-menu {
            position: absolute;
            right: 0; top: calc(100% + 8px);
            background: white;
            border: 1.5px solid var(--border-color);
            border-radius: 14px;
            box-shadow: var(--shadow-xl);
            min-width: 190px;
            overflow: hidden;
            display: none;
            z-index: 1000;
            animation: dropIn 0.2s ease;
        }
        .dropdown-menu.show { display: block; }

        @keyframes dropIn {
            from { opacity: 0; transform: translateY(-8px); }
            to   { opacity: 1; transform: translateY(0); }
        }

        .dropdown-menu a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            font-size: 13.5px;
            font-weight: 500;
            color: var(--text-primary);
            text-decoration: none;
            transition: background 0.15s;
        }
        .dropdown-menu a:hover { background: var(--bg-main); color: var(--primary); }
        .dropdown-menu a i { width: 16px; color: var(--text-secondary); }
        .dropdown-menu a:hover i { color: var(--primary); }

        /* ── Modal .show support ── */
        .modal { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 2000; align-items: center; justify-content: center; padding: 20px; }
        .modal.show { display: flex; animation: fadeIn .2s ease; }
        @keyframes fadeIn { from{opacity:0} to{opacity:1} }

        /* ── Top-bar actions layout ── */
        .top-bar-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-left: auto;
        }
        .profile-section { display: flex; align-items: center; }

        /* ── Empty state ── */
        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-secondary);
        }
        .empty-state i { font-size: 40px; margin-bottom: 12px; opacity: .4; }
        .empty-state p  { font-size: 14px; }