body.menu-open {
            overflow: hidden;
        }

        /* ===== HEADER ===== */
        .header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 5%;
            background: var(--white);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(0, 0, 0, 0.08);
            box-shadow: var(--shadow-sm);
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--dark);
            text-decoration: none;
            letter-spacing: -0.5px;
            transition: var(--transition);
        }

        .logo:hover {
            transform: scale(1.02);
        }

        .logo span {
            color: var(--primary);
        }

        /* Desktop Navigation */
        .nav {
            display: flex;
            gap: 30px;
            align-items: center;
        }

        .nav a {
            text-decoration: none;
            color: var(--text-main);
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            position: relative;
            padding: 5px 0;
        }

        .nav a:not(.nav-contact)::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .nav a:not(.nav-contact):hover::after {
            width: 100%;
        }

        .nav a:hover {
            color: var(--primary);
        }

        .nav-contact {
            background: var(--dark);
            color: var(--white) !important;
            padding: 10px 24px !important;
            border-radius: 50px;
            transition: var(--transition) !important;
            box-shadow: var(--shadow-sm);
        }

        .nav-contact:hover {
            background: var(--primary) !important;
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        .nav-contact::after {
            display: none !important;
        }

        /* ===== BEAUTIFUL BURGER MENU ===== */
        .burger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            cursor: pointer;
            width: 48px;
            height: 48px;
            background: transparent;
            border: none;
            z-index: 1002;
            padding: 0;
            position: relative;
            border-radius: 12px;
            transition: all 0.3s ease;
        }

        .burger:hover {
            background: rgba(37, 99, 235, 0.05);
        }

        .burger-box {
            width: 24px;
            height: 24px;
            position: relative;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 6px;
        }

        .burger span {
            display: block;
            width: 100%;
            height: 2px;
            background: var(--dark);
            border-radius: 6px;
            transition: all 0.4s cubic-bezier(0.68, -0.6, 0.32, 1.6);
            transform-origin: center;
        }

        /* Premium Burger Animation */
        .burger.active .burger-box span:nth-child(1) {
            transform: translateY(8px) rotate(45deg);
            background: var(--primary);
        }

        .burger.active .burger-box span:nth-child(2) {
            opacity: 0;
            transform: scale(0.2);
        }

        .burger.active .burger-box span:nth-child(3) {
            transform: translateY(-8px) rotate(-45deg);
            background: var(--primary);
        }

        /* ===== MOBILE MENU OVERLAY ===== */
        .menu-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(5px);
            -webkit-backdrop-filter: blur(5px);
            z-index: 1001;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .menu-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        /* ===== MOBILE SLIDE-OUT NAVIGATION ===== */
        .mobile-nav {
            position: fixed;
            top: 0;
            right: -100%;
            width: 300px;
            height: 100vh;
            background: var(--white);
            z-index: 1002;
            padding: 100px 30px 40px;
            box-shadow: -5px 0 30px rgba(0, 0, 0, 0.1);
            transition: right 0.4s cubic-bezier(0.68, -0.6, 0.32, 1.6);
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .mobile-nav.active {
            right: 0;
        }

        .mobile-nav a {
            text-decoration: none;
            color: var(--text-main);
            font-weight: 600;
            font-size: 1.2rem;
            padding: 12px 20px;
            border-radius: 12px;
            transition: var(--transition);
            text-align: left;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }

        .mobile-nav a:last-of-type {
            border-bottom: none;
        }

        .mobile-nav a:hover {
            background: rgba(37, 99, 235, 0.1);
            color: var(--primary);
            transform: translateX(5px);
        }

        .mobile-nav .nav-contact {
            background: var(--dark);
            color: var(--white) !important;
            text-align: center;
            margin-top: 20px;
            border-bottom: none;
        }

        .mobile-nav .nav-contact:hover {
            background: var(--primary) !important;
            transform: translateX(0) translateY(-2px);
        }

        /* ===== RESPONSIVE BREAKPOINT ===== */
        @media (max-width: 992px) {
            .nav {
                display: none;
            }

            .burger {
                display: flex;
            }
        }

        /* Small devices */
        @media (max-width: 576px) {
            .mobile-nav {
                width: 280px;
            }
            
            .logo {
                font-size: 1.5rem;
            }
        }

        /* Demo content for scrolling */
        .content {
            max-width: 1200px;
            margin: 40px auto;
            padding: 0 20px;
        }

        .content h1 {
            font-size: 2.5rem;
            margin-bottom: 20px;
            color: var(--dark);
        }

        .content p {
            margin-bottom: 20px;
            font-size: 1.1rem;
        }