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

        :root {
            --primary: #1e3a5f;
            --secondary: #c7a055;
            --accent: #2c5f8d;
            --text: #2c3e50;
            --text-light: #546e7a;
            --bg: #ffffff;
            --bg-light: #f8f9fa;
            --border: #e0e0e0;
        }

        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
        }

        /* Navigation */
        nav {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 20px rgba(0,0,0,0.05);
            z-index: 1000;
            padding: 1rem 0;
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.5px;
        }

        .nav-right {
            display: flex;
            gap: 2rem;
            align-items: center;
        }

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

        .nav-links a {
            text-decoration: none;
            color: var(--text);
            font-weight: 500;
            transition: color 0.3s;
            font-size: 0.95rem;
        }

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

        /* Language Switcher */
        .language-switcher {
            display: flex;
            gap: 0.5rem;
            padding: 0.3rem 0.6rem;
            background: var(--bg-light);
            border-radius: 20px;
        }

        .lang-btn {
            padding: 0.3rem 0.8rem;
            border: none;
            background: transparent;
            color: var(--text);
            font-weight: 600;
            cursor: pointer;
            border-radius: 15px;
            transition: all 0.3s;
            font-size: 0.85rem;
        }

        .lang-btn:hover {
            background: rgba(44, 95, 141, 0.1);
        }

        .lang-btn.active {
            background: var(--accent);
            color: white;
        }

        /* Hero Section */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: #2c5f8d !important;
            color: white;
            position: relative;
            overflow: hidden;
            padding: 120px 20px 80px 20px;
        }

        .hero-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 4rem 2rem;
            position: relative;
            z-index: 10;
            text-align: center;
        }

        .hero h1 {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            letter-spacing: -1px;
            color: #ffffff;
        }

        .hero .subtitle {
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            font-weight: 300;
            color: #ffffff;
        }

        .hero .tagline {
            font-size: 1.1rem;
            margin-bottom: 2.5rem;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
            color: #ffffff;
            line-height: 1.6;
        }

        .languages {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 2.5rem;
        }

        .language-tag {
            background: rgba(255, 255, 255, 0.2);
            padding: 0.6rem 1.4rem;
            border-radius: 25px;
            font-size: 0.95rem;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #ffffff;
            font-weight: 500;
        }

        .cta-buttons {
            display: flex;
            gap: 1.5rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            padding: 1rem 2.5rem;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
            display: inline-block;
            font-size: 1.05rem;
        }

        .btn-primary {
            background: #c7a055;
            color: #1e3a5f;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(199, 160, 85, 0.4);
            background: #d4ad64;
        }

        .btn-secondary {
            background: transparent;
            color: white;
            border: 2px solid white;
        }

        .btn-secondary:hover {
            background: white;
            color: #2c5f8d;
        }

        /* Section Styling */
        section {
            padding: 6rem 2rem;
            max-width: 1200px;
            margin: 0 auto;
        }

        section:nth-child(even):not(.hero) {
            background: var(--bg-light);
        }

        h2 {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 1rem;
            font-weight: 700;
            letter-spacing: -0.5px;
        }

        .section-intro {
            font-size: 1.2rem;
            color: var(--text-light);
            margin-bottom: 3rem;
            max-width: 800px;
        }

        /* About Section */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: start;
        }

        .about-text {
            font-size: 1.1rem;
            line-height: 1.8;
        }

        .about-text p {
            margin-bottom: 1.5rem;
        }

        .highlight {
            background: linear-gradient(120deg, rgba(199, 160, 85, 0.2) 0%, rgba(199, 160, 85, 0.1) 100%);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
            color: var(--primary);
        }

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

        .stat-card {
            background: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
            text-align: center;
            transition: transform 0.3s;
        }

        .stat-card:hover {
            transform: translateY(-5px);
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 0.5rem;
        }

        .stat-label {
            color: var(--text-light);
            font-size: 0.95rem;
        }

        /* Education Section */
        .education-timeline {
            position: relative;
            padding-left: 3rem;
        }

        .education-timeline::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(180deg, var(--secondary) 0%, var(--accent) 100%);
        }

        .education-item {
            position: relative;
            margin-bottom: 3rem;
            padding: 2rem;
            background: white;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
        }

        .education-item::before {
            content: '';
            position: absolute;
            left: -3.6rem;
            top: 2rem;
            width: 16px;
            height: 16px;
            background: var(--secondary);
            border-radius: 50%;
            border: 4px solid var(--bg-light);
        }

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

        .education-title {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--primary);
        }

        .education-period {
            color: var(--secondary);
            font-weight: 600;
            font-size: 0.95rem;
        }

        .education-institution {
            font-size: 1.1rem;
            color: var(--text);
            margin-bottom: 0.5rem;
        }

        .education-details {
            color: var(--text-light);
            font-size: 0.95rem;
        }

        /* Expertise Section */
        .expertise-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        .expertise-card {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
            transition: all 0.3s;
            border-left: 4px solid var(--secondary);
        }

        .expertise-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 30px rgba(0,0,0,0.1);
        }

        .expertise-icon {
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }

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

        .expertise-description {
            color: var(--text-light);
            line-height: 1.7;
        }

        /* Projects Section */
        .projects-grid {
            display: grid;
            gap: 2rem;
        }

        .project-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
            transition: all 0.3s;
        }

        .project-card:hover {
            box-shadow: 0 8px 40px rgba(0,0,0,0.1);
        }

        .project-content {
            padding: 2.5rem;
        }

        .project-tag {
            display: inline-block;
            background: var(--bg-light);
            color: var(--accent);
            padding: 0.4rem 1rem;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }

        .project-title {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 1rem;
        }

        .project-description {
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 1.5rem;
        }

        .project-topics {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .topic-badge {
            background: var(--bg-light);
            padding: 0.3rem 0.8rem;
            border-radius: 15px;
            font-size: 0.85rem;
            color: var(--text);
        }

        /* Contact Section */
        .contact-container {
            background: #2c5f8d;
            color: white;
            padding: 4rem;
            border-radius: 20px;
            text-align: center;
        }

        .contact-container h2 {
            color: white;
            margin-bottom: 1rem;
        }

        .contact-container .section-intro {
            color: rgba(255, 255, 255, 0.95);
            margin-bottom: 2.5rem;
        }

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

        .contact-item {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            background: rgba(255, 255, 255, 0.15);
            padding: 1rem 1.5rem;
            border-radius: 10px;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.3);
        }

        .contact-item a {
            color: white;
            text-decoration: none;
            font-weight: 500;
        }

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

        /* Footer */
        footer {
            background: var(--primary);
            color: white;
            text-align: center;
            padding: 2rem;
        }

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

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

            .hero .subtitle {
                font-size: 1.2rem;
            }

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

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

            section {
                padding: 4rem 1.5rem;
            }

            h2 {
                font-size: 2rem;
            }

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

            .contact-container {
                padding: 2.5rem 1.5rem;
            }
        }

        /* Smooth Scrolling */
        html {
            scroll-behavior: smooth;
        }

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

        .fade-in-up {
            animation: fadeInUp 0.8s ease-out;
        }

        /* Hide non-active languages */
        [data-lang]:not(.active-lang) {
            display: none;
        }