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

        :root {
            --primary: #1a365d;
            --accent: #10b981;
            --accent-light: #a7f3d0;
            --text-dark: #1f2937;
            --text-light: #6b7280;
            --bg-gradient-1: #fafafa;
            --bg-gradient-2: #f0fdf4;
            --bg-gradient-3: #ecfdf5;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            color: var(--text-dark);
            line-height: 1.6;
            background: linear-gradient(180deg, var(--bg-gradient-1) 0%, var(--bg-gradient-2) 50%, var(--bg-gradient-3) 100%);
            background-attachment: fixed;
        }

        /* Navigation */
        nav {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(26, 54, 93, 0.95);
            backdrop-filter: blur(10px);
            color: white;
            padding: 1.25rem 2rem;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            border-bottom: 1px solid rgba(16, 185, 129, 0.2);
        }

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

        .nav-brand {
            font-size: 1.5rem;
            font-weight: 700;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #ffffff 0%, var(--accent-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-links {
            display: flex;
            list-style: none;
            gap: 2.5rem;
        }

        .nav-links a {
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
        }

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

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent) 0%, var(--accent-light) 100%);
            transition: width 0.3s ease;
        }

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

        /* Dropdown Navigation */
        .dropdown {
            position: relative;
            display: inline-block;
        }

        .dropdown-content {
            visibility: hidden;
            opacity: 0;
            position: absolute;
            background: rgba(26, 54, 93, 0.95);
            backdrop-filter: blur(10px);
            min-width: 180px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
            border-radius: 8px;
            border: 1px solid rgba(16, 185, 129, 0.2);
            padding: 0.5rem 0;
            z-index: 1;
            top: calc(100% + 0.5rem);
            left: 50%;
            transform: translateX(-50%) translateY(10px);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .dropdown-content::before {
            content: '';
            position: absolute;
            top: -0.5rem;
            left: 0;
            right: 0;
            height: 0.5rem;
        }

        .dropdown:hover .dropdown-content {
            visibility: visible;
            opacity: 1;
            transform: translateX(-50%) translateY(0);
        }

        .dropdown-content a {
            color: rgba(255, 255, 255, 0.85);
            padding: 0.75rem 1.5rem;
            text-decoration: none;
            display: block;
            font-size: 0.9rem;
            white-space: nowrap;
        }

        .dropdown-content a::after {
            display: none;
        }

        .dropdown-content a:hover {
            color: var(--accent-light);
            background: rgba(255, 255, 255, 0.05);
            padding-left: 1.75rem; /* slight indent animation */
            transition: all 0.3s ease;
        }
        
        .nav-links .dropdown > a {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .chevron {
            width: 14px;
            height: 14px;
            transition: transform 0.3s ease;
            margin-top: 2px;
        }

        .dropdown:hover .chevron {
            transform: rotate(180deg);
        }

        /* Main content with top padding for fixed nav */
        main {
            margin-top: 70px;
        }

        /* Hero Section */
        .hero {
            background: linear-gradient(135deg, var(--primary) 0%, #0f2d47 50%, rgba(16, 185, 129, 0.1) 100%);
            color: navy;
            padding: 5rem 2rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(16, 185, 129, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            animation: float 8s ease-in-out infinite;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(16, 185, 129, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            animation: float 10s ease-in-out infinite reverse;
        }

        @keyframes float {

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

            50% {
                transform: translateY(30px);
            }
        }

        .hero-content {
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 0.5rem;
            font-weight: 800;
            letter-spacing: -1.5px;
            line-height: 1.1;
        }

        .hero .accent-line {
            height: 5px;
            width: 100px;
            background: linear-gradient(90deg, var(--accent) 0%, var(--accent-light) 100%);
            margin: 1.5rem auto 2rem;
            border-radius: 3px;
            box-shadow: 0 8px 20px rgba(16, 185, 129, 0.3);
        }

        .hero p {
            font-size: 1.25rem;
            opacity: 0.95;
            line-height: 1.8;
            font-weight: 300;
        }

        /* Container */
        .container {
            max-width: 1000px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        /* Sections - Blended style */
        section {
            padding: 5rem 2rem;
            position: relative;
            transition: all 0.3s ease;
        }

        section:nth-child(odd) {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.5) 0%, rgba(240, 253, 244, 0.5) 100%);
        }

        section:nth-child(even) {
            background: linear-gradient(135deg, rgba(236, 253, 245, 0.5) 0%, rgba(240, 253, 244, 0.3) 100%);
        }

        section h2 {
            font-size: 2.5rem;
            margin-bottom: 0.5rem;
            color: var(--primary);
            font-weight: 800;
            letter-spacing: -0.5px;
        }

        section .section-subtitle {
            font-size: 0.85rem;
            color: var(--accent);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 1rem;
            opacity: 0.9;
        }

        .section-content {
            max-width: 1000px;
            margin: 0 auto;
        }

        /* About Section */
        .about-text {
            font-size: 1.1rem;
            line-height: 1.8;
            color: var(--text-dark);
            margin-bottom: 2rem;
            font-weight: 300;
        }

        .experience-timeline {
            position: relative;
            padding: 2rem 0;
        }

        .timeline-item {
            display: grid;
            grid-template-columns: 150px 1fr;
            gap: 2rem;
            margin-bottom: 2.5rem;
            padding: 1.5rem;
            background: rgba(255, 255, 255, 0.6);
            border-radius: 12px;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(16, 185, 129, 0.1);
            transition: all 0.3s ease;
        }

        .timeline-item:hover {
            background: rgba(255, 255, 255, 0.9);
            border-color: rgba(16, 185, 129, 0.3);
            transform: translateX(8px);
            box-shadow: 0 8px 24px rgba(16, 185, 129, 0.1);
        }

        .timeline-year {
            font-weight: 700;
            color: var(--accent);
            font-size: 0.95rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .timeline-content h3 {
            color: var(--primary);
            margin-bottom: 0.5rem;
            font-size: 1.1rem;
            font-weight: 700;
        }

        .timeline-content p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .highlights {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            margin-top: 2.5rem;
        }

        .highlight {
            padding: 2rem;
            background: linear-gradient(135deg, rgba(16, 185, 129, 0.08) 0%, rgba(167, 243, 208, 0.08) 100%);
            border-radius: 12px;
            border: 1px solid rgba(16, 185, 129, 0.15);
            backdrop-filter: blur(10px);
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .highlight:hover {
            transform: translateY(-8px);
            border-color: rgba(16, 185, 129, 0.4);
            background: linear-gradient(135deg, rgba(16, 185, 129, 0.12) 0%, rgba(167, 243, 208, 0.12) 100%);
            box-shadow: 0 12px 28px rgba(16, 185, 129, 0.15);
        }

        .highlight h3 {
            color: var(--primary);
            margin-bottom: 0.75rem;
            font-size: 1rem;
            font-weight: 700;
        }

        .highlight p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* Research Section */
        .research-items {
            display: grid;
            gap: 2rem;
            margin-top: 2.5rem;
        }

        .research-item {
            padding: 2rem;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.7) 0%, rgba(240, 253, 244, 0.5) 100%);
            border-radius: 12px;
            border: 1px solid rgba(16, 185, 129, 0.1);
            backdrop-filter: blur(10px);
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
        }

        .research-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent 0%, rgba(16, 185, 129, 0.1) 50%, transparent 100%);
            transition: left 0.5s ease;
        }

        .research-item:hover::before {
            left: 100%;
        }

        .research-item:hover {
            border-color: rgba(16, 185, 129, 0.3);
            box-shadow: 0 12px 28px rgba(16, 185, 129, 0.12);
            transform: translateX(4px);
        }

        .research-item h3 {
            color: var(--primary);
            margin-bottom: 0.75rem;
            font-size: 1.15rem;
            font-weight: 700;
            position: relative;
            z-index: 1;
        }

        .research-item p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }

        /* Skills Section */
        .skills-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 1rem;
            margin-top: 2.5rem;
        }

        .skill-badge {
            padding: 1rem;
            background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(167, 243, 208, 0.1) 100%);
            border-radius: 10px;
            border: 1px solid rgba(16, 185, 129, 0.2);
            text-align: center;
            font-weight: 600;
            color: var(--primary);
            font-size: 0.9rem;
            transition: all 0.3s ease;
            cursor: default;
        }

        .skill-badge:hover {
            background: linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(167, 243, 208, 0.2) 100%);
            border-color: var(--accent);
            transform: scale(1.05);
            box-shadow: 0 8px 16px rgba(16, 185, 129, 0.15);
        }

        /* Contact Section */
        .contact-methods {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
            margin-top: 2.5rem;
        }

        .contact-item {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            padding: 1.5rem;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.6) 0%, rgba(240, 253, 244, 0.4) 100%);
            border-radius: 12px;
            border: 1px solid rgba(16, 185, 129, 0.1);
            backdrop-filter: blur(10px);
            transition: all 0.3s ease;
        }

        .contact-item:hover {
            border-color: rgba(16, 185, 129, 0.3);
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.8) 0%, rgba(240, 253, 244, 0.6) 100%);
            transform: translateX(8px);
            box-shadow: 0 8px 20px rgba(16, 185, 129, 0.1);
        }

        .contact-icon {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
        }

        .contact-item h3 {
            color: var(--primary);
            font-size: 1rem;
            margin-bottom: 0.25rem;
            font-weight: 700;
        }

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

        .contact-item a:hover {
            color: var(--primary);
        }

        .contact-item p {
            font-size: 0.9rem;
            color: var(--text-light);
        }

        /* Footer */
        footer {
            background: linear-gradient(135deg, var(--primary) 0%, rgba(15, 45, 71, 0.9) 100%);
            color: white;
            padding: 3rem 2rem;
            text-align: center;
            font-size: 0.9rem;
            border-top: 1px solid rgba(16, 185, 129, 0.2);
        }

        footer p {
            opacity: 0.85;
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
            padding: 0.5rem;
        }

        .mobile-menu-btn svg {
            width: 28px;
            height: 28px;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }

            .nav-container {
                flex-wrap: wrap;
                align-items: center;
            }

            .nav-brand {
                flex: 1;
            }

            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 0;
                padding-top: 1rem;
            }

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

            .nav-links .dropdown > a {
                padding: 1rem 0;
                justify-content: space-between;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }

            .dropdown-content {
                position: static;
                visibility: visible;
                opacity: 1;
                transform: none;
                box-shadow: none;
                border: none;
                background: rgba(0, 0, 0, 0.2);
                border-radius: 4px;
                margin-top: 0.5rem;
                padding: 0;
                display: none;
            }

            .dropdown.active .dropdown-content {
                display: block;
            }

            .dropdown.active .chevron {
                transform: rotate(180deg);
            }

            .hero h1 {
                font-size: 2.2rem;
            }

            .hero p {
                font-size: 1rem;
            }

            section {
                padding: 3rem 1.5rem;
            }

            section h2 {
                font-size: 1.8rem;
            }

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

            .timeline-item {
                grid-template-columns: 1fr;
                gap: 1rem;
            }

            .hero::before {
                width: 300px;
                height: 300px;
                right: -20%;
            }

            .hero::after {
                width: 250px;
                height: 250px;
                left: -10%;
            }
        }

        @media (max-width: 480px) {
            nav {
                padding: 1rem;
            }

            .nav-links a::after {
                display: none;
            }

            .hero {
                padding: 3rem 1.5rem;
            }

            .hero h1 {
                font-size: 1.8rem;
            }

            section h2 {
                font-size: 1.4rem;
            }

            .contact-item {
                flex-direction: column;
                text-align: center;
            }
        }