:root {
            --primary-color: #5d78ff;
            --secondary-color: #f7f8fa;
            --dark-color: #2d353c;
        }
        body {
            background-color: #f5f5f5;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        .sidebar {
            width:140px;
            background-color: var(--dark-color);
            color: white;
            height: 100vh;
            position: fixed;
            text-align: center !important;
        }
        .sidebar .nav-link i{
          position: relative;
          display:block;
        }
        .sidebar .nav-link,
        .sidebar .nav-link i {
            color: rgba(141, 141, 141, 0.9);
            margin-bottom: 5px;
        }
        .sidebar .nav-link:hover i{
          color: rgba(225, 225, 225, 0.7);
        }
        .sidebar .nav-link:hover {
            color: rgba(255, 255, 255, 0.923);
            margin-bottom: 5px;
        }
        .sidebar .nav-link.active,
        .sidebar .nav-link.active i {
            color: rgba(255, 255, 255, 0.923);
        }
        .sidebar .nav-link i {
            margin-right: 10px;
        }
        .top-bar {
            background-color: white;
            box-shadow: 0 1px 10px rgba(0,0,0,0.1);
            height: 60px;
        }
        .main-content {
            margin-left: 150px;
            padding: 20px;
        }
        .card {
            border: none;
            border-radius: 5px;
            box-shadow: 0 1px 10px rgba(0,0,0,0.05);
        }
        .btn-primary {
            background-color: var(--dark-color);
            border-color: var(--dark-color);
        }
        .order-item {
            border-bottom: 1px solid #eee;
            padding: 10px 0;
        }
        .order-item:last-child {
            border-bottom: none;
        }
        .product-card {
            cursor: pointer;
            transition: transform 0.2s;
        }
        .product-card:hover {
            transform: translateY(-3px);
        }
        .category-btn {
            background: white;
            border: 1px solid #ddd;
            margin-right: 10px;
            margin-bottom: 10px;
        }
        .category-btn.active {
            background: var(--dark-color);
            color: white;
            border-color: var(--dark-color);
        }
        .order-summary {
            background-color: var(--secondary-color);
            border-radius: 5px;
        }