/* Navigation */
        .nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            /* background: rgba(15, 23, 42, 0.95);
            backdrop-filter: blur(10px); */
            transition: all 0.3s ease;
            padding: 1rem 0;
        }

        .nav.scrolled {
            background: rgba(10, 15, 30, 0.98);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo-wrapper{
            display: flex;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: bold;
            color: #60a5fa;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        /* .logo::before {
            content: '⚡';
            font-size: 1.2rem;
        } */

        /* Desktop Navigation */
        .nav-links {
            display: flex;
            gap: 2rem;
            list-style: none;
        }

        .nav-links a {
            color: #e2e8f0;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s ease;
            position: relative;
        }

        .nav-links a:hover {
            color: #60a5fa;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: #60a5fa;
            transition: width 0.3s ease;
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        /* Auth Buttons */
        .auth-buttons {
            display: flex;
            gap: 1rem;
            align-items: center;
        }

        .btn {
            padding: 0.5rem 1rem;
            border: none;
            border-radius: 0.375rem;
            font-weight: 500;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
            font-size: 0.9rem;
        }

        .btn-login {
            background: transparent;
            color: #e2e8f0;
            border: 1px solid #475569;
        }

        .btn-login:hover {
            background: #1e293b;
            color: #60a5fa;
        }

        .btn-signup, .btn-logout {
            background: #60a5fa;
            color: white;
        }

        .btn-signup:hover , .btn-logout:hover{
            background: #3b82f6;
            transform: translateY(-1px);
        }

        /* Hamburger Menu */
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
            padding: 0.5rem;
        }

        .hamburger span {
            width: 25px;
            height: 3px;
            background: #e2e8f0;
            transition: all 0.3s ease;
            border-radius: 2px;
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(7px, -6px);
        }

        /* Mobile Sidebar */
        .sidebar {
            position: fixed;
            top: 0;
            right: -100%;
            width: 100%;
            max-width: 300px;
            height: 100vh;
            background: #1e293b;
            z-index: 1001;
            transition: right 0.3s ease;
            padding: 2rem 1.5rem;
            box-shadow: -5px 0 20px rgba(0, 0, 0, 0.3);
        }

        .sidebar.active {
            right: 0;
        }

        .sidebar-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
        }

        .close-btn {
            background: none;
            border: none;
            color: #e2e8f0;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.5rem;
            border-radius: 0.375rem;
            transition: background 0.3s ease;
        }

        .close-btn:hover {
            background: #334155;
        }

        .sidebar-links {
            list-style: none;
            margin-bottom: 2rem;
        }

        .sidebar-links li {
            margin-bottom: 1rem;
        }

        .sidebar-links a {
            color: #e2e8f0;
            text-decoration: none;
            font-weight: 500;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            display: block;
            transition: color 0.3s ease;
        }

        .sidebar-links a:hover {
            color: #60a5fa;
        }

        .sidebar-auth {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        /* Overlay */
        .overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

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

           /* Mobile Responsive */
        @media (max-width: 851px) {
            .nav-links,
            .auth-buttons {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .hero p {
                font-size: 1rem;
            }
        }