:root {
            --primary-color: #4a6cf7;
            --secondary-color: #6f42c1;
            --text-color: #333;
            --bg-color: #fff;
            --card-bg: #f8f9fa;
            --header-bg: rgba(255, 255, 255, 0.95);
            --footer-bg: #1d2140;
            --footer-text: #a9b3bb;
            --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }

        .dark-mode {
            --primary-color: #6b8aff;
            --secondary-color: #9370db;
            --text-color: #e6e6e6;
            --bg-color: #121212;
            --card-bg: #1e1e1e;
            --header-bg: rgba(18, 18, 18, 0.95);
            --shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
        }

        /* Base Styles */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Poppins', sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: var(--bg-color);
            transition: var(--transition);
        }

        a {
            text-decoration: none;
            color: inherit;
        }

        ul {
            list-style: none;
        }

        img {
            max-width: 100%;
        }

        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }

        .btn {
            display: inline-block;
            padding: 12px 30px;
            background: var(--primary-color);
            color: white;
            border-radius: 5px;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }

        .btn:hover {
            background: var(--secondary-color);
            transform: translateY(-3px);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary-color);
            color: var(--primary-color);
        }

        .btn-outline:hover {
            background: var(--primary-color);
            color: white;
        }

        .section {
            padding: 80px 0;
        }

        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-title h2 {
            font-size: 36px;
            margin-bottom: 15px;
            color: var(--primary-color);
        }

        .section-title p {
            color: var(--text-color);
            max-width: 600px;
            margin: 0 auto;
        }

        /* Header Styles - FIXED VERSION */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: var(--header-bg);
            backdrop-filter: blur(10px);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
            min-height: 70px;
        }

        .logo {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary-color);
        }

        .nav-menu {
            display: flex;
            gap: 30px;
        }

        .nav-menu li a {
            font-weight: 500;
            transition: var(--transition);
            color: var(--text-color);
        }

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .theme-toggle {
            background: none;
            border: none;
            cursor: pointer;
            font-size: 20px;
            color: var(--text-color);
            padding: 8px;
            border-radius: 50%;
            transition: var(--transition);
        }

        .theme-toggle:hover {
            background: var(--card-bg);
        }

        /* Hamburger Menu */
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
            padding: 5px;
        }

        .hamburger span {
            width: 25px;
            height: 3px;
            background: var(--text-color);
            border-radius: 2px;
            transition: 0.3s ease-in-out;
        }

        .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(5px, -5px);
        }

        /* Body padding to account for fixed header */
        body {
            padding-top: 70px;
        }

        /* Hero Section */
        .hero {
            min-height: calc(100vh - 70px);
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(74, 108, 247, 0.1) 0%, rgba(111, 66, 193, 0.1) 100%);
        }

        .hero-content {
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            color: var(--text-color);
        }

        .hero p {
            font-size: 1.2rem;
            margin-bottom: 30px;
            color: var(--text-color);
        }

        .typing-text {
            color: var(--primary-color);
            font-weight: 600;
            min-height: 1.5em;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-top: 30px;
            flex-wrap: wrap;
        }

        /* Highlights Section */
        .highlights {
            background: var(--card-bg);
        }

        .highlights-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }

        .highlight-card {
            background: var(--bg-color);
            padding: 30px;
            border-radius: 10px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .highlight-card:hover {
            transform: translateY(-10px);
        }

        .highlight-card i {
            font-size: 40px;
            color: var(--primary-color);
            margin-bottom: 20px;
        }

        .highlight-card h3 {
            margin-bottom: 15px;
        }

        /* Footer */
        footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }

        .footer-col h4 {
            color: white;
            margin-bottom: 20px;
            font-size: 18px;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a:hover {
            color: white;
        }

        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        /* Contact Form Styles */
        .contact-form {
            background: var(--card-bg);
            padding: 30px 25px;
            border-radius: 10px;
            box-shadow: var(--shadow);
            max-width: 500px;
            margin: 0 auto;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: var(--primary-color);
        }

        .form-control {
            width: 100%;
            padding: 12px 14px;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-size: 16px;
            background: #fff;
            color: var(--text-color);
            transition: border-color 0.2s;
        }

        .form-control:focus {
            border-color: var(--primary-color);
            outline: none;
        }

        .btn {
            width: 100%;
            padding: 14px;
            font-size: 18px;
            border-radius: 5px;
            margin-top: 10px;
        }

        @media (max-width: 768px) {
            /* Adjust body padding for mobile header height */
            body {
                padding-top: 70px;
            }

            /* Mobile Navigation */
            .nav-menu {
                position: fixed;
                top: 70px;
                right: -100%;
                flex-direction: column;
                background: var(--bg-color);
                width: 250px;
                height: calc(100vh - 70px);
                justify-content: flex-start;
                padding-top: 50px;
                gap: 20px;
                box-shadow: var(--shadow);
                transition: right 0.3s ease-in-out;
                z-index: 999;
                border-left: 1px solid var(--card-bg);
            }

            .nav-menu.show {
                right: 0;
            }

            .nav-menu li {
                padding: 0 30px;
                width: 100%;
            }

            .nav-menu li a {
                display: block;
                padding: 15px 0;
                border-bottom: 1px solid var(--card-bg);
                font-size: 18px;
            }

            /* Show hamburger on mobile */
            .hamburger {
                display: flex;
            }

            /* Hero adjustments */
            .hero {
                min-height: calc(100vh - 70px);
                padding: 40px 0;
            }

            .hero h1 {
                font-size: 2.5rem;
            }

            .hero-btns {
                flex-direction: column;
                align-items: center;
            }

            /* Highlights grid adjustment */
            .highlights-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            /* Footer adjustments */
            .footer-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
        }

        @media (max-width: 480px) {
            .container {
                width: 95%;
                padding: 0 10px;
            }

            .nav-menu {
                width: 100%;
            }

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

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

            .highlight-card {
                padding: 20px;
            }

            .contact-form {
                padding: 15px 5px;
            }
        }

        .about-img img {
            width: 180px;
            height: 180px;
            object-fit: cover;
            border-radius: 50%;
            border: 4px solid var(--primary-color);
            box-shadow: var(--shadow);
            display: block;
            margin: 0 auto;
        }