body {
            box-sizing: border-box;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        html, body, .main-wrapper {
            height: 100%;
            width: 100%;
        }
        
        .main-wrapper {
            overflow-auto;
        }
        
        .gradient-bg {
            background: white;
        }
        
        .card {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
        }
        
        .nav-link {
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            border-radius: 8px;
        }
        
        .nav-link::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            width: 0;
            height: 100%;
            background: #ff9900;
            transition: width 0.4s ease;
            z-index: -1;
        }
        
        .nav-link:hover::before {
            width: 100%;
        }
        
        .nav-link:hover {
            transform: translateX(8px);
            color: white;
        }
        
        .nav-link:hover svg {
            color: white;
        }
        
        .section {
            scroll-margin-top: 2rem;
        }
        
        .social-icon {
            transition: none;
        }
        
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: 280px;
            height: 100%;
            transform: translateX(-100%);
            transition: transform 0.3s ease;
            z-index: 1000;
            display: flex;
            flex-direction: column;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
        }
        
        .sidebar.open {
            transform: translateX(0);
        }
        
        .sidebar-header {
            flex-shrink: 0;
            padding: 0;
            text-align: center;
            height: 280px;
            position: sticky;
            top: 0;
            z-index: 100;
            background: #111827;
        }
        
        .sidebar-header-text {
            padding: 1rem 1rem;
        }
        
        .sidebar-nav {
            flex: 1;
            overflow-y: auto;
            overflow-x: hidden;
            padding: 1rem 1rem;
        }
        
        .sidebar-nav::-webkit-scrollbar {
            width: 0px;
            background: transparent;
        }
        
        .sidebar-nav {
            -ms-overflow-style: none;
            scrollbar-width: none;
        }
        
        .sidebar-footer {
            flex-shrink: 0;
            padding: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
        }
        
        .menu-overlay.active {
            display: block;
        }
        
        .mobile-menu-btn {
            position: fixed;
            top: 10px;
            left: 10px;
            z-index: 10000;
            background: rgba(17, 24, 39, 0.95);
            backdrop-filter: blur(10px);
            padding: 14px;
            cursor: pointer;
            transition: all 0.3s ease;
            border: 2px solid rgba(255, 255, 255, 0.2);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.6);
            border-radius: 12px;
        }
        
        .mobile-menu-btn:hover {
            background: rgba(17, 24, 39, 1);
            transform: scale(1.05);
        }
        
        .language-btn {
            cursor: pointer;
            border-radius: 8px;
            transition: background 0.3s ease, border-color 0.3s ease;
            border-color: #374151;
        }
        
        .language-btn:hover {
            background: #ff9900;
        }
        
        .language-btn.active {
            border-color: #ff9900 !important;
            background: #ff9900;
        }
        
        @media (min-width: 769px) {
            .sidebar {
                position: fixed;
                transform: translateX(0);
                width: 280px;
                top: 0;
                left: 0;
                height: 100vh;
            }
            
            .mobile-menu-btn {
                display: none;
            }
            
            .content-area {
                margin-left: 280px;
                margin-right: 0;
            }
            
            .section {
                padding: 2rem;
            }
        }
        
        @media (max-width: 768px) {
            .content-area {
                margin-left: 0 !important;
                width: 100%;
            }
            
            .card {
                padding: 2rem !important;
            }
            
            h1 {
                font-size: 2.5rem !important;
            }
            
            h2 {
                font-size: 2rem !important;
            }
            
            .sidebar {
                width: 280px;
            }
        }
        
        @media (max-width: 480px) {
            .card {
                padding: 1.5rem !important;
            }
            
            h1 {
                font-size: 2rem !important;
            }
            
            h2 {
                font-size: 1.5rem !important;
            }
            
            .sidebar {
                width: 100%;
                max-width: 280px;
            }
        }
    

@view-transition { navigation: auto; }