a {
            text-decoration: none;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --accent: #8b5cf6;
            --text: #1f2937;
            --text-light: #6b7280;
            --bg: #ffffff;
            --bg-secondary: #f9fafb;
            --border: #e5e7eb;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
        }

        header {
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(10px);
            background: rgba(255, 255, 255, 0.9);
        }

        nav {
            max-width: 1200px;
            margin: 0 auto;
            padding: 1rem 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text);
            text-decoration: none;
        }

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

        .nav-links a {
            color: var(--text-light);
            text-decoration: none;
            transition: color 0.2s;
        }

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

        .hero {
            max-width: 1200px;
            margin: 0 auto;
            padding: 5rem 1.5rem 4rem;
            text-align: center;
        }

        .hero h1 {
            font-size: 2.75rem;
            margin-bottom: 1rem;
            color: var(--text);
            line-height: 1.2;
        }

        .hero .subtitle {
            font-size: 1.25rem;
            color: var(--text-light);
            margin-bottom: 1rem;
        }

        .hero .description {
            font-size: 1rem;
            color: var(--text-light);
            max-width: 700px;
            margin: 0 auto 2rem;
        }

        .stats {
            display: flex;
            justify-content: center;
            gap: 3rem;
            flex-wrap: wrap;
            margin: 3rem 0;
        }

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

        .stat-item .number {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
        }

        .stat-item .label {
            font-size: 0.875rem;
            color: var(--text-light);
            margin-top: 0.25rem;
        }

        .hero-cta {
            display: flex;
            gap: 1rem;
            justify-content: center;
            margin-top: 2rem;
        }

        section {
            max-width: 1200px;
            margin: 0 auto;
            padding: 4rem 1.5rem;
        }

        section h2 {
            font-size: 2rem;
            margin-bottom: 3rem;
            text-align: center;
        }

        .project-card {
            background: var(--bg-secondary);
            border-radius: 12px;
            padding: 2rem;
            margin-bottom: 2rem;
            border: 1px solid var(--border);
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .project-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }

        .project-header {
            display: flex;
            justify-content: space-between;
            align-items: start;
            margin-bottom: 1rem;
        }

        .project-card h3 {
            font-size: 1.5rem;
            color: var(--text);
        }

        .project-badge {
            background: var(--accent);
            color: white;
            padding: 0.25rem 0.75rem;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
        }

        .project-meta {
            color: var(--text-light);
            font-size: 0.875rem;
            margin-bottom: 1rem;
        }

        .project-card p {
            color: var(--text-light);
            margin-bottom: 1rem;
        }

        .project-section {
            margin: 1.5rem 0;
        }

        .project-section h4 {
            font-size: 1rem;
            margin-bottom: 0.5rem;
            color: var(--primary);
            font-weight: 600;
        }

        .highlight-box {
            background: var(--bg);
            border-left: 3px solid var(--primary);
            padding: 1rem;
            margin: 1rem 0;
            border-radius: 4px;
        }

        .tech-stack {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-top: 1rem;
        }

        .tech-tag {
            background: var(--bg);
            padding: 0.25rem 0.75rem;
            border-radius: 4px;
            font-size: 0.875rem;
            color: var(--text-light);
            border: 1px solid var(--border);
        }

        .project-links {
            display: flex;
            gap: 1rem;
            margin-top: 1.5rem;
        }

        .btn {
            display: inline-block;
            padding: 0.5rem 1.5rem;
            background: var(--primary);
            color: white;
            text-decoration: none;
            border-radius: 6px;
            transition: background 0.2s;
            font-size: 0.875rem;
        }

        .btn:hover {
            background: var(--primary-dark);
        }

        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }

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

        .skills-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }

        .skill-category {
            background: var(--bg-secondary);
            padding: 1.5rem;
            border-radius: 8px;
        }

        .skill-category h3 {
            font-size: 1.25rem;
            margin-bottom: 1rem;
            color: var(--primary);
        }

        .skill-category ul {
            list-style: none;
        }

        .skill-category li {
            padding: 0.5rem 0;
            color: var(--text-light);
        }

        .skill-category li::before {
            content: "✓ ";
            color: var(--primary);
            font-weight: bold;
        }

        .education-timeline {
            position: relative;
            padding-left: 2rem;
        }

        .education-timeline::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border);
        }

        .education-card {
            position: relative;
            background: var(--bg-secondary);
            border-radius: 12px;
            padding: 1.5rem;
            margin-bottom: 2rem;
        }

        .education-card::before {
            content: '';
            position: absolute;
            left: -2.5rem;
            top: 1.5rem;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid var(--bg);
        }

        .education-card h3 {
            font-size: 1.25rem;
            color: var(--text);
            margin-bottom: 0.25rem;
        }

        .education-meta {
            color: var(--text-light);
            font-size: 0.875rem;
            margin-bottom: 1rem;
        }

        .education-card ul {
            list-style: none;
            color: var(--text-light);
        }

        .education-card li {
            padding: 0.25rem 0;
            padding-left: 1rem;
            position: relative;
        }

        .education-card li::before {
            content: "•";
            position: absolute;
            left: 0;
            color: var(--primary);
        }

        .about-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .about-content p {
            margin-bottom: 1rem;
            color: var(--text-light);
        }

        .about-content strong {
            color: var(--text);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .contact-item {
            text-align: center;
            padding: 1.5rem;
            background: var(--bg-secondary);
            border-radius: 8px;
        }

        .contact-item h3 {
            font-size: 1rem;
            margin-bottom: 0.5rem;
            color: var(--text);
        }

        .contact-item a {
            color: var(--primary);
            text-decoration: none;
            font-size: 0.875rem;
        }

        .contact-item a:hover {
            text-decoration: underline;
        }

        footer {
            background: var(--bg-secondary);
            padding: 2rem 1.5rem;
            text-align: center;
            color: var(--text-light);
            margin-top: 4rem;
            border-top: 1px solid var(--border);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--text);
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2rem;
            }

            .stats {
                gap: 1.5rem;
            }

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

            .project-header {
                flex-direction: column;
                gap: 0.5rem;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                flex-direction: column;
                padding: 1rem;
                border-bottom: 1px solid var(--border);
                backdrop-filter: blur(10px);
            }

            .nav-links.active {
                display: flex;
            }

            .menu-toggle {
                display: block;
            }

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

            .education-timeline {
                padding-left: 1.5rem;
            }

            .education-card::before {
                left: -2rem;
            }
        }