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

        :root {
            --bg-primary: #0a0a0a;
            --bg-secondary: #1a1a1a;
            --text-primary: #ffffff;
            --text-secondary: #b0b0b0;
            --accent: #6366f1;
            --accent-hover: #4f46e5;
            --glass-bg: rgba(255, 255, 255, 0.1);
            --glass-border: rgba(255, 255, 255, 0.2);
        }

        [data-theme="light"] {
            --bg-primary: #ffffff;
            --bg-secondary: #f8fafc;
            --text-primary: #1e293b;
            --text-secondary: #64748b;
            --glass-bg: rgba(0, 0, 0, 0.05);
            --glass-border: rgba(0, 0, 0, 0.1);
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            transition: all 0.3s ease;
        }

        /* Animated Background */
        .bg-animation {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            background: linear-gradient(45deg, var(--accent), #8b5cf6, #ec4899, #f59e0b);
            background-size: 400% 400%;
            animation: gradientShift 15s ease infinite;
            opacity: 0.1;
        }

        @keyframes gradientShift {
            0% {
                background-position: 0% 50%;
            }

            50% {
                background-position: 100% 50%;
            }

            100% {
                background-position: 0% 50%;
            }
        }

        /* Floating particles */
        .particles {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
        }

        .particle {
            position: absolute;
            width: 4px;
            height: 4px;
            background: var(--accent);
            border-radius: 50%;
            opacity: 0.6;
            animation: float 6s ease-in-out infinite;
        }

        @keyframes float {

            0%,
            100% {
                transform: translateY(0px) rotate(0deg);
            }

            50% {
                transform: translateY(-20px) rotate(180deg);
            }
        }

        /* Header */
        header {
            position: fixed;
            top: 0;
            width: 100%;
            padding: 1rem 2rem;
            background: rgba(0, 0, 0, 0.1);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--glass-border);
            z-index: 1000;
            transition: all 0.3s ease;
        }

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

        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--accent), #8b5cf6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

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

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

        .nav-links a:hover {
            color: var(--accent);
            transform: translateY(-2px);
        }

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

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

        .theme-controls {
            display: flex;
            gap: 1rem;
            align-items: center;
        }

        .theme-toggle,
        .lang-selector {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            color: var(--text-primary);
            padding: 0.5rem 1rem;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
            backdrop-filter: blur(10px);
        }

        .theme-toggle:hover,
        .lang-selector:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
        }

        /* Main Content */
        main {
            margin-top: 80px;
        }

        section {
            min-height: 100vh;
            padding: 4rem 2rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .container {
            max-width: 1200px;
            width: 100%;
        }

        /* Hero Section */
        .hero {
            text-align: center;
            position: relative;
        }

        .hero-content h1 {
            font-size: clamp(3rem, 8vw, 6rem);
            font-weight: 900;
            margin-bottom: 1rem;
            background: linear-gradient(135deg, var(--accent), #8b5cf6, #ec4899);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            animation: textGlow 3s ease-in-out infinite alternate;
        }

        @keyframes textGlow {
            0% {
                filter: brightness(1);
            }

            100% {
                filter: brightness(1.2);
            }
        }

        .hero-content .subtitle {
            font-size: clamp(1.2rem, 3vw, 2rem);
            color: var(--text-secondary);
            margin-bottom: 2rem;
            font-weight: 300;
        }

        .hero-content .age {
            font-size: 1.1rem;
            color: var(--accent);
            margin-bottom: 2rem;
        }

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

        .btn {
            padding: 1rem 2rem;
            border: none;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent), #8b5cf6);
            color: white;
        }

        .btn-secondary {
            background: var(--glass-bg);
            color: var(--text-primary);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(10px);
        }

        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
        }

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

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

        .about-text h2 {
            font-size: 3rem;
            margin-bottom: 2rem;
            background: linear-gradient(135deg, var(--accent), #8b5cf6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .about-text p {
            font-size: 1.1rem;
            margin-bottom: 1.5rem;
            color: var(--text-secondary);
        }

        .certification {
            background: var(--glass-bg);
            padding: 1.5rem;
            border-radius: 15px;
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(10px);
            margin-top: 2rem;
            text-align: center;
        }

        .certification h3 {
            color: var(--accent);
            margin-bottom: 0.5rem;
        }

        .skills-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
            gap: 1rem;
        }

        .skill-item {
            background: var(--glass-bg);
            padding: 1.5rem;
            border-radius: 15px;
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(10px);
            text-align: center;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .skill-item:hover {
            transform: translateY(-5px) scale(1.05);
            border-color: var(--accent);
        }

        .skill-icon {
            font-size: 2rem;
            margin-bottom: 0.5rem;
        }

        /* Projects Section */
        .projects-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }

        .project-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 20px;
            padding: 2rem;
            backdrop-filter: blur(10px);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .project-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
            transition: left 0.5s ease;
        }

        .project-card:hover::before {
            left: 100%;
        }

        .project-card:hover {
            transform: translateY(-10px);
            border-color: var(--accent);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
        }

        .project-card h3 {
            color: var(--accent);
            margin-bottom: 1rem;
            font-size: 1.5rem;
        }

        .project-tech {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin: 1rem 0;
        }

        .tech-tag {
            background: var(--accent);
            color: white;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
        }

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

        .project-link {
            color: var(--accent);
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        .project-link:hover {
            transform: translateX(5px);
        }

        /* Contact Section */
        .contact {
            background: var(--bg-secondary);
        }

        .contact-content {
            text-align: center;
        }

        .contact-content h2 {
            font-size: 3rem;
            margin-bottom: 2rem;
            background: linear-gradient(135deg, var(--accent), #8b5cf6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .social-links {
            display: flex;
            justify-content: center;
            gap: 2rem;
            flex-wrap: wrap;
            margin-top: 3rem;
        }

        .social-link {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 1rem 2rem;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 50px;
            color: var(--text-primary);
            text-decoration: none;
            transition: all 0.3s ease;
            backdrop-filter: blur(10px);
        }

        .social-link:hover {
            transform: translateY(-5px);
            border-color: var(--accent);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
        }

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

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

            .skills-grid {
                grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
            }

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

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

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

        /* Scroll animations */
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.6s ease;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Lang Selector */
        .lang-selector {
            appearance: none;
            -webkit-appearance: none;
            -moz-appearance: none;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            color: var(--text-primary);
            padding: 0.5rem 2.5rem 0.5rem 1rem;
            border-radius: 50px;
            font-size: 1rem;
            font-family: inherit;
            cursor: pointer;
            transition: all 0.3s ease;
            backdrop-filter: blur(10px);
            outline: none;
            position: relative;
        }

        .lang-selector:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 2px var(--accent-hover);
        }

        .lang-selector option {
            color: var(--text-primary);
            background: var(--bg-secondary);
        }

        /* Custom arrow for select */
        .lang-selector {
            background-image: url("data:image/svg+xml,%3Csvg width='16' height='16' fill='none' stroke='%236366f1' stroke-width='2' viewBox='0 0 24 24'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 1rem center;
            background-size: 1.2em;
            padding-right: 2.5rem;
        }