:root {
            --bg-primary: linear-gradient(to bottom, #0f0f0f, #1a1a1a);
            --bg-secondary: linear-gradient(to right, #171717, #1f1f1f);
            --text-primary: #f2f2f2;
            --text-secondary: #b3b3b3;
            --border-color: linear-gradient(to right, #2b2b2b, #343434);
        }

        body {
            background-image: var(--bg-primary);
            color: var(--text-primary);
            font-family: 'Poppins', sans-serif;
        }

        .section-bg {
            background-image: var(--bg-secondary);
        }

        body.light-mode {
            background-color: var(--bg-primary-light);
            color: var(--text-primary-light);
        }

        body.dark-mode {
            background-color: var(--bg-primary-dark);
            color: var(--text-primary-dark);
        }

        /* Dark/Light Mode Specific Styles */
        .light-mode .section-bg {
            background-color: var(--bg-secondary-light);
            border-color: #e5e7eb;
        }

        .dark-mode .section-bg {
            background-color: var(--bg-secondary-dark);
            border-color: #374151;
        }
        .theme-toggle {
            position: fixed;
            bottom: 20px;
            right: 20px;
            z-index: 100;
            cursor: pointer;
            background-color: rgba(128, 128, 128, 0.1);
            padding: 10px;
            border-radius: 50%;
            transition: all 0.3s;
        }

        .theme-toggle:hover {
            background-color: rgba(128, 128, 128, 0.2);
        }

        .navbar {
            backdrop-filter: blur(10px);
            background-image: var(--bg-secondary);
        }

        .burger-menu {
            display: block;
            cursor: pointer;
            z-index: 101;
        }

        .burger-line {
            width: 25px;
            height: 3px;
            background-color: var(--text-primary);
            margin: 5px 0;
            transition: 0.4s;
        }

        @media (max-width: 768px) {
            .nav-menu {
                position: fixed;
                left: -100%;
                top: 0;
                width: 100%;
                height: 100vh;
                background-image: var(--bg-primary);
                flex-direction: column;
                justify-content: center;
                align-items: center;
                transition: 0.3s;
                z-index: 100;
            }

            .nav-menu.active {
                left: 0;
            }
        }

        .card {
            transition: all 0.3s ease;
            border-width: 1px;
            border-image: var(--border-color) 1 round;
        }

        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
        }