:root {
            /* Vyapar Color Scheme */
            --vyapar-primary: #2563eb;
            --vyapar-primary-dark: #1d4ed8;
            --vyapar-primary-light: #3b82f6;
            --vyapar-secondary: #475569;
            --vyapar-success: #10b981;
            --vyapar-warning: #f59e0b;
            --vyapar-danger: #ef4444;
            --vyapar-dark: #1e293b;
            --vyapar-light: #f8fafc;
            --vyapar-bg: #f1f5f9;
            --vyapar-sidebar: #1e293b;
            --vyapar-card: #ffffff;
            --vyapar-text: #334155;
            --vyapar-text-light: #64748b;
        }
        
        * {
            font-family: 'Inter', sans-serif;
        }
        
        body {
            background-color: var(--vyapar-bg);
            color: var(--vyapar-text);
            overflow-x: hidden;
        }
        
        /* Modern Sidebar with Scroll */
        .sidebar {
            background: linear-gradient(180deg, var(--vyapar-sidebar) 0%, #0f172a 100%);
            width: 280px;
            min-height: 100vh;
            position: fixed;
            top: 0;
            left: 0;
            z-index: 1000;
            padding-top: 70px;
            box-shadow: 2px 0 10px rgba(0,0,0,0.1);
            transition: transform 0.3s ease;
        }
        
        .sidebar-content {
            height: calc(100vh - 70px);
            overflow-y: auto;
            padding: 1rem 0;
        }
        
        /* Custom Scrollbar for Sidebar */
        .sidebar-content::-webkit-scrollbar {
            width: 6px;
        }
        
        .sidebar-content::-webkit-scrollbar-track {
            background: rgba(255,255,255,0.1);
            border-radius: 3px;
        }
        
        .sidebar-content::-webkit-scrollbar-thumb {
            background: var(--vyapar-primary);
            border-radius: 3px;
        }
        
        .sidebar-content::-webkit-scrollbar-thumb:hover {
            background: var(--vyapar-primary-light);
        }
        
        .sidebar-brand {
            padding: 1.5rem 1.5rem;
            border-bottom: 1px solid #334155;
            margin-bottom: 0;
            position: fixed;
            top: 0;
            left: 0;
            width: 280px;
            background: var(--vyapar-sidebar);
            z-index: 1001;
        }
        
        .sidebar-brand .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
        }
        
        .sidebar-brand .logo i {
            color: var(--vyapar-primary);
            margin-right: 0.75rem;
            font-size: 1.75rem;
        }
        
        .nav-section {
            margin-bottom: 1rem;
        }
        
        .nav-section-title {
            color: #94a3b8;
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            padding: 0.5rem 1.5rem;
            margin-bottom: 0.5rem;
        }
        
        .nav-link {
            color: #cbd5e1;
            padding: 0.75rem 1.5rem;
            margin: 0.125rem 1rem;
            border-radius: 0.75rem;
            transition: all 0.3s ease;
            font-weight: 500;
            display: flex;
            align-items: center;
            border: none;
            background: none;
            width: calc(100% - 2rem);
            text-decoration: none;
            cursor: pointer;
        }
        
        .nav-link:hover {
            color: white;
            background: linear-gradient(90deg, var(--vyapar-primary), var(--vyapar-primary-dark));
            transform: translateX(5px);
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }
        
        .nav-link.active {
            color: white;
            background: linear-gradient(90deg, var(--vyapar-primary), var(--vyapar-primary-dark));
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }
        
        .nav-link i {
            width: 20px;
            margin-right: 0.875rem;
            font-size: 1.1rem;
            text-align: center;
        }
        
        .nav-link .chevron {
            margin-left: auto;
            transition: transform 0.3s ease;
            font-size: 0.8rem;
        }
        
        .nav-link.collapsed .chevron {
            transform: rotate(-90deg);
        }
        
        /* Dropdown Menu for Reports */
        .nav-dropdown {
            list-style: none;
            padding: 0;
            margin: 0;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        
        .nav-dropdown.show {
            max-height: 500px;
        }
        
        .nav-dropdown .nav-link {
            padding-left: 3rem;
            margin: 0.125rem 1rem;
            font-size: 0.9rem;
            background: rgba(255, 255, 255, 0.05);
        }
        
        .nav-dropdown .nav-link i {
            font-size: 0.9rem;
            width: 16px;
        }
        
        .nav-dropdown .nav-link:hover,
        .nav-dropdown .nav-link.active {
            background: linear-gradient(90deg, var(--vyapar-primary), var(--vyapar-primary-dark));
        }
        
        /* Reports parent link styling */
        .reports-parent.active {
            color: white;
            background: linear-gradient(90deg, var(--vyapar-primary), var(--vyapar-primary-dark));
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }
        
        /* Mobile Menu Toggle */
        .mobile-menu-toggle {
            display: none;
            background: var(--vyapar-primary);
            border: none;
            color: white;
            width: 40px;
            height: 40px;
            border-radius: 0.5rem;
            align-items: center;
            justify-content: center;
            margin-right: 1rem;
        }
        
        /* Modern Header */
        .main-header {
            background: white;
            height: 70px;
            position: fixed;
            top: 0;
            left: 280px;
            right: 0;
            z-index: 999;
            box-shadow: 0 2px 10px rgba(0,0,0,0.08);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 2rem;
            transition: left 0.3s ease;
        }
        
        .header-title h4 {
            color: var(--vyapar-dark);
            font-weight: 600;
            margin: 0;
        }
        
        .header-actions .btn {
            margin-left: 0.5rem;
            border-radius: 0.5rem;
            font-weight: 500;
        }
        
        .user-menu img {
            width: 40px;
            height: 40px;
            border-radius: 50%;
        }
        
        /* Main Content */
        .main-content {
            margin-left: 280px;
            margin-top: 70px;
            padding: 2rem;
            min-height: calc(100vh - 70px);
            transition: margin-left 0.3s ease;
        }
        
        /* Modern Cards */
        .modern-card {
            background: var(--vyapar-card);
            border: none;
            border-radius: 1rem;
            box-shadow: 0 4px 20px rgba(0,0,0,0.08);
            transition: all 0.3s ease;
            overflow: hidden;
        }
        
        .modern-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0,0,0,0.12);
        }
        
        .modern-card .card-header {
            background: var(--vyapar-card);
            border-bottom: 1px solid #e2e8f0;
            padding: 1.25rem 1.5rem;
            font-weight: 600;
            color: var(--vyapar-dark);
        }
        
        .modern-card .card-body {
            padding: 1.5rem;
        }
        
        /* Stats Cards - Vyapar Style */
        .stat-card {
            background: linear-gradient(135deg, var(--vyapar-primary), var(--vyapar-primary-dark));
            color: white;
            border-radius: 1rem;
            padding: 1.5rem;
            position: relative;
            overflow: hidden;
            border: none;
            height: 100%;
        }
        
        .stat-card::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 100%;
            height: 100%;
            background: rgba(255,255,255,0.1);
            transform: rotate(30deg);
        }
        
        .stat-card.sales {
            background: linear-gradient(135deg, var(--vyapar-success), #059669);
        }
        
        .stat-card.products {
            background: linear-gradient(135deg, var(--vyapar-primary), var(--vyapar-primary-dark));
        }
        
        .stat-card.warning {
            background: linear-gradient(135deg, var(--vyapar-warning), #d97706);
        }
        
        .stat-card.customers {
            background: linear-gradient(135deg, #8b5cf6, #7c3aed);
        }
        
        .stat-content {
            position: relative;
            z-index: 2;
        }
        
        /* Buttons */
        .btn-primary {
            background: linear-gradient(135deg, var(--vyapar-primary), var(--vyapar-primary-dark));
            border: none;
            border-radius: 0.75rem;
            padding: 0.75rem 1.5rem;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
            background: linear-gradient(135deg, var(--vyapar-primary-dark), var(--vyapar-primary));
        }
        
        /* Responsive Design */
        @media (max-width: 1200px) {
            .sidebar {
                width: 250px;
            }
            
            .sidebar-brand {
                width: 250px;
            }
            
            .main-header {
                left: 250px;
            }
            
            .main-content {
                margin-left: 250px;
            }
        }
        
        @media (max-width: 992px) {
            .sidebar {
                transform: translateX(-100%);
            }
            
            .sidebar.mobile-open {
                transform: translateX(0);
            }
            
            .main-header {
                left: 0;
            }
            
            .main-content {
                margin-left: 0;
            }
            
            .mobile-menu-toggle {
                display: flex;
            }
            
            .sidebar-overlay {
                display: none;
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(0,0,0,0.5);
                z-index: 999;
            }
            
            .sidebar-overlay.mobile-open {
                display: block;
            }
        }
        
        @media (max-width: 768px) {
            .main-content {
                padding: 1rem;
            }
            
            .main-header {
                padding: 0 1rem;
            }
        }