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

        :root {
            --primary-color: #2563eb;
            --secondary-color: #1e40af;
            --accent-color: #06b6d4;
            --text-primary: #1f2937;
            --text-secondary: #6b7280;
            --bg-primary: #ffffff;
            --bg-secondary: #f8fafc;
            --bg-accent: #0f172a;
            --border-subtle: #e5e7eb;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-primary);
            background: var(--bg-primary);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header & Navigation */
        header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-subtle);
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            transition: all 0.3s ease;
        }

        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-color);
            text-decoration: none;
            transition: color 0.3s ease;
        }

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

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

        .nav-links a {
            text-decoration: none;
            color: var(--text-primary);
            font-weight: 500;
            transition: color 0.3s ease;
            position: relative;
        }

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

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary-color);
            transition: width 0.3s ease;
        }

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

        /* Hero Section */
        .hero {
            background: linear-gradient(135deg, var(--bg-accent) 0%, var(--secondary-color) 100%);
            color: white;
            padding: 8rem 0 4rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
            opacity: 0.3;
        }

        .hero-content {
            position: relative;
            z-index: 1;
        }

        .hero h1 {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            opacity: 0;
            animation: fadeInUp 1s ease 0.2s forwards;
        }

        .hero-subtitle {
            font-size: 1.3rem;
            margin-bottom: 2rem;
            opacity: 0.9;
            opacity: 0;
            animation: fadeInUp 1s ease 0.4s forwards;
        }

        .hero-description {
            font-size: 1.1rem;
            margin-bottom: 3rem;
            opacity: 0.8;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            opacity: 0;
            animation: fadeInUp 1s ease 0.6s forwards;
        }

        .cta-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
            opacity: 0;
            animation: fadeInUp 1s ease 0.8s forwards;
        }

        .btn {
            padding: 12px 30px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

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

        .btn-primary:hover {
            background: transparent;
            border-color: var(--accent-color);
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(6, 182, 212, 0.3);
        }

        .btn-secondary {
            background: transparent;
            color: white;
            border: 2px solid rgba(255, 255, 255, 0.3);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        /* About Section */
        .about {
            padding: 5rem 0;
            background: var(--bg-secondary);
        }

        .section-title {
            text-align: center;
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 3rem;
            color: var(--text-primary);
        }

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

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

        .about-text h3 {
            color: var(--primary-color);
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }

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

        .skill-item {
            background: white;
            padding: 1.5rem;
            border-radius: 12px;
            text-align: center;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s ease;
        }

        .skill-item:hover {
            transform: translateY(-5px);
        }

        .skill-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            border-radius: 12px;
            margin: 0 auto 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: white;
        }

        /* Experience Section */
        .experience {
            padding: 5rem 0;
        }

        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--primary-color);
            transform: translateX(-50%);
        }

        .timeline-item {
            position: relative;
            margin-bottom: 3rem;
            display: flex;
            align-items: center;
        }

        .timeline-content {
            background: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            width: 45%;
            position: relative;
        }

        .timeline-item:nth-child(odd) .timeline-content {
            margin-left: auto;
        }

        .timeline-dot {
            position: absolute;
            left: 50%;
            width: 16px;
            height: 16px;
            background: var(--primary-color);
            border: 4px solid white;
            border-radius: 50%;
            transform: translateX(-50%);
            box-shadow: 0 0 0 4px var(--primary-color);
        }

        /* Contact Section */
        .contact {
            background: var(--bg-accent);
            color: white;
            padding: 5rem 0;
            text-align: center;
        }

        .contact-links {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin-top: 2rem;
            flex-wrap: wrap;
        }

        .contact-link {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: white;
            text-decoration: none;
            padding: 15px 25px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50px;
            transition: all 0.3s ease;
            backdrop-filter: blur(10px);
        }

        .contact-link:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }

        /* Animations */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

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

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

            .about-content {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

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

            .timeline::before {
                left: 20px;
            }

            .timeline-content {
                width: calc(100% - 60px);
                margin-left: 60px;
            }

            .timeline-item:nth-child(odd) .timeline-content {
                margin-left: 60px;
            }

            .timeline-dot {
                left: 20px;
            }

            .contact-links {
                flex-direction: column;
                align-items: center;
            }

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