:root {
            --primary-color: #2563eb;
            --secondary-color: #0ea5e9;
            --accent-color: #7c3aed;
            --light-bg: #ffffff;
            --light-surface: #f8fafc;
            --text-primary: #1e293b;
            --text-secondary: #64748b;
            --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            --gradient-2: linear-gradient(135deg, #2563eb 0%, #0ea5e9 100%);
            --gradient-3: linear-gradient(135deg, #7c3aed 0%, #3b82f6 100%);
            --border-color: #e2e8f0;
            --hover-bg: #f1f5f9;
        }
        /* Hero Section */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            background: radial-gradient(ellipse at center, rgba(37, 99, 235, 0.05) 0%, transparent 70%);
        }

        .hero-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            text-align: center;
            z-index: 2;
        }

        .hero-title {
            font-size: clamp(3rem, 8vw, 6rem);
            font-weight: 700;
            margin-bottom: 1.5rem;
            background: var(--gradient-2);
            background-clip: text;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.1;
        }

        .hero-subtitle {
            font-size: clamp(1.2rem, 3vw, 1.5rem);
            color: var(--text-secondary);
            margin-bottom: 2rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-button {
            display: inline-block;
            padding: 1rem 2rem;
            background: var(--gradient-2);
            color: white;
            text-decoration: none;
            border-radius: 50px;
            font-weight: 600;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            margin: 1rem;
        }

        .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 20px 40px rgba(0, 102, 255, 0.3);
        }

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

        .cta-secondary:hover {
            background: var(--primary-color);
            color: white;
        }

        /* Floating Elements */
        .floating-element {
            position: absolute;
            border-radius: 50%;
            background: var(--gradient-3);
            opacity: 0.1;
            animation: float 6s ease-in-out infinite;
        }

        .floating-element:nth-child(1) {
            width: 100px;
            height: 100px;
            top: 20%;
            left: 10%;
            animation-delay: 0s;
        }

        .floating-element:nth-child(2) {
            width: 150px;
            height: 150px;
            top: 60%;
            right: 10%;
            animation-delay: 2s;
        }

        .floating-element:nth-child(3) {
            width: 80px;
            height: 80px;
            top: 80%;
            left: 20%;
            animation-delay: 4s;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0px); }
            50% { transform: translateY(-20px); }
        }

        /* About Section */
        .about {
            padding: 8rem 0;
            background: var(--light-surface);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .about-content {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 4rem;
            align-items: center;
        }

        .about-image {
            position: relative;
        }

        .profile-img {
            width: 100%;
            max-width: 400px;
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s ease;
        }

        .profile-img:hover {
            transform: scale(1.05);
        }

        .section-title {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 2rem;
            background: var(--gradient-2);
            background-clip: text;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .about-text {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 2rem;
        }

        .skills {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 2rem;
        }

        .skill-tag {
            padding: 0.5rem 1rem;
            background: rgba(37, 99, 235, 0.1);
            border: 1px solid var(--primary-color);
            border-radius: 25px;
            color: var(--primary-color);
            font-size: 0.9rem;
            font-weight: 500;
        }

        /* Social Links */
        .social-links {
            display: flex;
            gap: 1rem;
            margin-top: 2rem;
        }

        .social-link {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 50px;
            height: 50px;
            background: var(--gradient-3);
            border-radius: 50%;
            color: white;
            text-decoration: none;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .social-link:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(124, 58, 237, 0.3);
        }

        /* Articles Section */
        .articles {
            padding: 8rem 0;
            background: var(--light-bg);
        }

        .articles-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2rem;
            margin-top: 4rem;
        }

        .article-card {
            background: var(--light-surface);
            border-radius: 20px;
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 1px solid var(--border-color);
        }

        .article-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        }

        .article-image {
            width: 100%;
            height: 200px;
            background: var(--gradient-1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.2rem;
            font-weight: 600;
        }

        .article-content {
            padding: 2rem;
        }

        .article-meta {
            display: flex;
            gap: 1rem;
            margin-bottom: 1rem;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .article-tag {
            background: rgba(124, 58, 237, 0.2);
            color: var(--accent-color);
            padding: 0.3rem 0.8rem;
            border-radius: 15px;
            font-size: 0.8rem;
        }

        .article-title {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }

        .article-excerpt {
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 1.5rem;
        }

        .read-more {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 600;
            transition: color 0.3s ease;
        }

        .read-more:hover {
            color: var(--secondary-color);
        }

        /* Contact Section */
        .contact {
            padding: 8rem 0;
            background: var(--light-surface);
            text-align: center;
        }

        .contact-options {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
            margin-bottom: 4rem;
        }

        .contact-card {
            background: var(--light-bg);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 2rem;
            text-align: center;
            transition: transform 0.3s ease, border-color 0.3s ease;
        }

        .contact-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary-color);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }

        .contact-icon {
            font-size: 3rem;
            margin-bottom: 1rem;
            display: block;
        }

        .contact-card h3 {
            font-size: 1.3rem;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }

        .contact-card p {
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
            line-height: 1.6;
        }

        .contact-btn {
            display: inline-block;
            padding: 0.8rem 1.5rem;
            background: var(--gradient-2);
            color: white;
            text-decoration: none;
            border-radius: 25px;
            font-weight: 600;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .contact-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
        }

        .newsletter-signup {
            max-width: 500px;
            margin: 0 auto;
            background: var(--light-bg);
            padding: 3rem 2rem;
            border-radius: 20px;
            border: 1px solid var(--border-color);
        }

        .newsletter-form {
            display: flex;
            gap: 1rem;
            margin-bottom: 1rem;
        }

        .newsletter-input {
            flex: 1;
            padding: 1rem;
            background: var(--light-bg);
            border: 1px solid var(--border-color);
            border-radius: 25px;
            color: var(--text-primary);
            font-family: inherit;
        }

        .newsletter-input:focus {
            outline: none;
            border-color: var(--primary-color);
        }

        .newsletter-btn {
            padding: 1rem 2rem;
            background: var(--gradient-2);
            color: white;
            border: none;
            border-radius: 25px;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.3s ease;
            white-space: nowrap;
        }

        .newsletter-btn:hover {
            transform: translateY(-2px);
        }

        /* Footer */
        footer {
            background: var(--light-bg);
            padding: 4rem 0 2rem;
            border-top: 1px solid var(--border-color);
        }

        .footer-content {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 4rem;
            margin-bottom: 3rem;
        }

        .footer-info {
            display: grid;
            grid-template-columns: 2fr 2fr;
            gap: 3rem;
        }

        .footer-description {
            color: var(--text-secondary);
            margin-top: 1rem;
            line-height: 1.6;
            max-width: 300px;
        }

        .footer-links {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2rem;
        }

        .footer-column h4 {
            color: var(--text-primary);
            margin-bottom: 1rem;
            font-weight: 600;
        }

        .footer-column ul {
            list-style: none;
        }

        .footer-column li {
            margin-bottom: 0.5rem;
        }

        .footer-column a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.3s ease;
        }

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

        .footer-qr-section {
            text-align: center;
        }

        .footer-qr-section h4 {
            color: var(--text-primary);
            margin-bottom: 2rem;
            font-weight: 600;
        }

        .qr-codes {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }

        .qr-item {
            text-align: center;
        }

        .qr-placeholder {
            margin-bottom: 1rem;
        }

        .qr-code-box {
            width: 120px;
            height: 120px;
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, rgba(14, 165, 233, 0.05) 100%);
            border: 2px solid var(--border-color);
            border-radius: 15px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            margin: 0 auto;
            position: relative;
            transition: transform 0.3s ease, border-color 0.3s ease;
        }

        .qr-code-box:hover {
            transform: translateY(-5px);
            border-color: var(--primary-color);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }

        .qr-icon {
            font-size: 2rem;
            margin-bottom: 0.5rem;
            display: block;
        }

        .qr-pattern {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 4px;
            opacity: 0.3;
        }

        .qr-dot {
            width: 8px;
            height: 8px;
            background: var(--text-secondary);
            border-radius: 2px;
        }

        .qr-item p {
            color: var(--text-primary);
            font-weight: 600;
            margin-bottom: 0.3rem;
        }

        .qr-item span {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 2rem;
            border-top: 1px solid var(--border-color);
        }

        .footer-legal {
            display: flex;
            gap: 1rem;
            align-items: center;
        }

        .footer-legal a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.3s ease;
        }

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

        .footer-legal span {
            color: var(--text-secondary);
        }

        /* Mobile Menu */
        .mobile-menu-btn {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }

        .mobile-menu-btn span {
            width: 25px;
            height: 3px;
            background: var(--text-primary);
            transition: all 0.3s ease;
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }

            .mobile-menu-btn {
                display: flex;
            }

            .hero-title {
                font-size: 3rem;
            }

            .about-content {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .articles-grid {
                grid-template-columns: 1fr;
            }

            .section-title {
                font-size: 2rem;
            }

            .container {
                padding: 0 1rem;
            }

            .contact-options {
                grid-template-columns: 1fr;
            }

            .newsletter-form {
                flex-direction: column;
            }

            .footer-content {
                grid-template-columns: 1fr;
                gap: 3rem;
            }

            .footer-info {
                grid-template-columns: 1fr;
                gap: 2rem;
                text-align: center;
            }

            .footer-links {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }

            .qr-codes {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }

            .qr-code-box {
                width: 100px;
                height: 100px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 1rem;
                text-align: center;
            }
        }

        @media (max-width: 480px) {
            .hero {
                padding: 0 1rem;
                min-height: 70vh;
            }
            .footer-description{
                margin: 0 auto;
            }

            .cta-button {
                display: block;
                margin: 0.5rem auto;
                max-width: 200px;
            }

            .skills {
                justify-content: center;
            }

            .newsletter-signup {
                padding: 2rem 1rem;
            }

            .footer-content {
                grid-template-columns: 1fr;
                gap: 3rem;
            }

            .footer-info {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .footer-links {
                grid-template-columns: repeat(2, 1fr);
            }

            .qr-codes {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }

            .qr-code-box {
                width: 100px;
                height: 100px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 1rem;
                text-align: center;
            }
        }

        /* SEO-friendly structured data placeholder */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }