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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            transition: all 0.3s ease;
        }

        /* Dark mode styles */
        body.dark-mode {
            background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
            color: #e0e0e0;
        }

        body.dark-mode header {
            background: rgba(20, 20, 20, 0.95);
        }

        body.dark-mode .nav-links a {
            color: #e0e0e0;
        }

        body.dark-mode .nav-links a:hover {
            color: #667eea;
        }

        body.dark-mode .logo {
            color: #8a9bff;
        }

        body.dark-mode main {
            background: #1a1a1a;
        }

        body.dark-mode .section {
            border-bottom: 1px solid #333;
        }

        body.dark-mode .section h2 {
            color: #e0e0e0;
        }

        body.dark-mode .skill-category {
            background: #2a2a2a;
            color: #e0e0e0;
        }

        body.dark-mode .skill-category h3 {
            color: #8a9bff;
        }

        body.dark-mode .project-card {
            background: #2a2a2a;
            border: 1px solid #444;
        }

        body.dark-mode .timeline-content {
            background: #2a2a2a;
            color: #e0e0e0;
        }

        body.dark-mode .goals-content {
            background: linear-gradient(135deg, #2a2a2a 0%, #333 100%);
            color: #e0e0e0;
        }

        body.dark-mode .professional-summary {
            color: #bbb;
        }

        body.dark-mode .project-description {
            color: #bbb;
        }

        body.dark-mode .tech-tag {
            background: #333;
            color: #ccc;
        }

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

        /* Header */
        header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
        }

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

        .logo {
            font-size: 1.5rem;
            font-weight: bold;
            color: #667eea;
        }

        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.5rem;
            align-items: center;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
        }

        .theme-toggle {
            background: none;
            border: 2px solid #667eea;
            color: #667eea;
            padding: 0.5rem;
            border-radius: 50%;
            cursor: pointer;
            font-size: 1.2rem;
            transition: all 0.3s ease;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .theme-toggle:hover {
            background: #667eea;
            color: white;
            transform: rotate(20deg);
        }

        body.dark-mode .theme-toggle {
            border-color: #8a9bff;
            color: #8a9bff;
        }

        body.dark-mode .theme-toggle:hover {
            background: #8a9bff;
            color: #1a1a1a;
        }

        .nav-links a {
            text-decoration: none;
            color: #333;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 0.5rem 1rem;
            border-radius: 20px;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .nav-links a:hover {
            color: #667eea;
            background: rgba(102, 126, 234, 0.1);
            transform: translateY(-2px);
        }

        body.dark-mode .nav-links a:hover {
            background: rgba(138, 155, 255, 0.2);
        }

        /* Hero Section */
        .hero {
            margin-top: 80px;
            padding: 4rem 0;
            text-align: center;
            color: white;
            background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), 
                        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 800"><rect width="1200" height="800" fill="%23667eea"/><g fill="none" stroke="%23ffffff" stroke-width="2" opacity="0.1"><circle cx="200" cy="200" r="50"/><circle cx="400" cy="150" r="30"/><circle cx="600" cy="250" r="40"/><circle cx="800" cy="180" r="35"/><circle cx="1000" cy="220" r="45"/><rect x="150" y="350" width="100" height="60" rx="5"/><rect x="350" y="380" width="80" height="40" rx="3"/><rect x="550" y="340" width="120" height="80" rx="8"/><rect x="750" y="370" width="90" height="50" rx="4"/><rect x="950" y="350" width="110" height="70" rx="6"/></g></svg>') center/cover;
            background-attachment: fixed;
        }

        .hero h1 {
            font-size: 3rem;
            margin-bottom: 1rem;
            animation: fadeInUp 1s ease;
        }

        .hero .subtitle {
            font-size: 1.2rem;
            margin-bottom: 2rem;
            opacity: 0.9;
            animation: fadeInUp 1s ease 0.3s both;
        }

        .cta-button {
            display: inline-block;
            background: #667eea;
            color: white;
            padding: 12px 30px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            animation: fadeInUp 1s ease 0.6s both;
        }

        .cta-button:hover {
            background: #5a6fd8;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        }

        /* Main Content */
        main {
            background: white;
            margin-top: 2rem;
            border-radius: 20px 20px 0 0;
            box-shadow: 0 -5px 30px rgba(0, 0, 0, 0.1);
        }

        .section {
            padding: 4rem 0;
            border-bottom: 1px solid #eee;
        }

        .section:last-child {
            border-bottom: none;
        }

        .section h2 {
            font-size: 2.5rem;
            margin-bottom: 2rem;
            color: #333;
            position: relative;
            display: inline-block;
        }

        .section h2::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 50px;
            height: 3px;
            background: linear-gradient(90deg, #667eea, #764ba2);
            border-radius: 2px;
        }

        /* Professional Summary */
        .professional-summary {
            background: #f8f9fa;
            padding: 2rem;
            border-radius: 12px;
            border-left: 4px solid #667eea;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.08);
        }

        .professional-summary p {
            font-size: 1.1rem;
            line-height: 1.8;
            color: #555;
        }

        body.dark-mode .professional-summary {
            background: #2a2a2a;
            border-left: 4px solid #8a9bff;
        }

        body.dark-mode .professional-summary p {
            color: #bbb;
        }

        /* Skills Grid */
        .skills-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }

        .skill-category {
            background: #f8f9fa;
            padding: 2rem;
            border-radius: 15px;
            transition: transform 0.3s ease;
        }

        .skill-category:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }

        .skill-category h3 {
            color: #667eea;
            margin-bottom: 1rem;
            font-size: 1.3rem;
        }

        .skill-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .skill-tag {
            background: #667eea;
            color: white;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 500;
        }

        /* Certifications */
        .certifications-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }

        .cert-card {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 2rem;
            border-radius: 15px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .cert-card::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent);
            transform: rotate(45deg);
            transition: all 0.6s ease;
            opacity: 0;
        }

        .cert-card:hover::before {
            opacity: 1;
            transform: rotate(45deg) translate(50%, 50%);
        }

        .cert-card:hover {
            transform: scale(1.05) translateY(-5px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
        }

        .cert-icon {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            display: block;
        }

        .cert-card h4 {
            font-size: 1.2rem;
            margin-bottom: 0.5rem;
            position: relative;
            z-index: 1;
        }

        .cert-card p {
            opacity: 0.9;
            position: relative;
            z-index: 1;
        }

        .cert-date {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background: rgba(255, 255, 255, 0.2);
            padding: 0.3rem 0.8rem;
            border-radius: 15px;
            font-size: 0.8rem;
            font-weight: 500;
        }

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

        .project-card {
            background: white;
            border: 1px solid #eee;
            border-radius: 15px;
            overflow: hidden;
            transition: all 0.3s ease;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
        }

        .project-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
        }

        .project-header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 1.5rem;
        }

        .project-header h3 {
            font-size: 1.3rem;
            margin-bottom: 0.5rem;
        }

        .project-content {
            padding: 1.5rem;
        }

        .project-description {
            color: #555;
            margin-bottom: 1rem;
        }

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

        .tech-tag {
            background: #f1f3f4;
            color: #555;
            padding: 0.2rem 0.6rem;
            border-radius: 12px;
            font-size: 0.8rem;
        }

        /* Experience Timeline */
        .timeline {
            position: relative;
            margin-top: 2rem;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 30px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, #667eea, #764ba2);
        }

        .timeline-time {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background: rgba(255, 255, 255, 0.2);
            padding: 0.3rem 0.8rem;
            border-radius: 15px;
            font-size: 0.8rem;
            font-weight: 500;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 2rem;
            padding-left: 80px;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: 24px;
            top: 0;
            width: 12px;
            height: 12px;
            background: #667eea;
            border-radius: 50%;
            border: 3px solid white;
            box-shadow: 0 0 0 3px #667eea;
        }

        .timeline-content {
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: 10px;
            border-left: 4px solid #667eea;
        }

        .timeline-date {
            color: #667eea;
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 0.5rem;
        }

        .timeline-title {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        /* Goals */
        .goals-content {
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            padding: 2rem;
            border-radius: 15px;
            margin-top: 2rem;
        }

        .goals-list {
            list-style: none;
            margin-top: 1rem;
        }

        .goals-list li {
            margin-bottom: 1rem;
            padding-left: 2rem;
            position: relative;
        }

        .goals-list li::before {
            content: '🎯';
            position: absolute;
            left: 0;
            top: 0;
        }

        /* Contact */
        .contact-info {
            text-align: center;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 3rem;
            border-radius: 15px;
            margin-top: 2rem;
        }

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

        .contact-link {
            color: white;
            text-decoration: none;
            padding: 0.8rem 1.5rem;
            border: 2px solid white;
            border-radius: 25px;
            transition: all 0.3s ease;
        }

        .contact-link:hover {
            background: white;
            color: #667eea;
        }

        footer {
            background: #f8f9fa;
            padding: 2rem 0;
            text-align: center;
            color: #666;
        }

        body.dark-mode footer {
            background: #1a1a1a;
            color: #999;
        }

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

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

        /* Mobile Responsive */
        @media (max-width: 968px) {
            .nav-links {
                position: static;
                transform: none;
                flex-direction: column;
                gap: 0.5rem;
            }
        }

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

            .mobile-menu {
                display: block;
                background: none;
                border: none;
                font-size: 1.5rem;
                cursor: pointer;
                color: #333;
            }

            body.dark-mode .mobile-menu {
                color: #e0e0e0;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .section h2 {
                font-size: 2rem;
            }

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

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

            .nav-links a {
                padding: 0.3rem 0.8rem;
                font-size: 0.9rem;
            }
        }

        .mobile-menu {
            display: none;
        }