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

        :root {
            --primary-dark: #1e3a8a;
            --primary-light: #60a5fa;
            --accent: #3b82f6;
            --bg-primary: #ffffff;
            --bg-secondary: #f8fafc;
            --text-primary: #1f2937;
            --text-secondary: #6b7280;
            --border: #e5e7eb;
        }

        [data-theme="dark"] {
            --primary-dark: #1e40af;
            --primary-light: #93c5fd;
            --accent: #60a5fa;
            --bg-primary: #0f172a;
            --bg-secondary: #1e293b;
            --text-primary: #f1f5f9;
            --text-secondary: #cbd5e1;
            --border: #334155;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            transition: all 0.3s ease;
        }

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

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

        [data-theme="dark"] header {
            background: rgba(15, 23, 42, 0.95);
        }

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

        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-dark);
        }

        .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;
        }

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

        .theme-toggle {
            background: none;
            border: 2px solid var(--primary-dark);
            color: var(--primary-dark);
            padding: 0.5rem 1rem;
            border-radius: 25px;
            cursor: pointer;
            font-size: 0.9rem;
            transition: all 0.3s ease;
        }

        .theme-toggle:hover {
            background: var(--primary-dark);
            color: white;
        }

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

        .hero-content h1 {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-content p {
            font-size: 1.25rem;
            color: var(--text-secondary);
            margin-bottom: 2rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

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

        .btn {
            padding: 0.75rem 2rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            border: 2px solid transparent;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            color: white;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(59, 130, 246, 0.3);
        }

        .btn-secondary {
            border: 2px solid var(--primary-dark);
            color: var(--primary-dark);
        }

        .btn-secondary:hover {
            background: var(--primary-dark);
            color: white;
        }

        /* Sections */
        section {
            padding: 4rem 0;
        }

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

        /* About Section */
        .about-content {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 3rem;
            align-items: center;
        }

        .about-image {
            text-align: center;
        }

        .profile-img {
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 4rem;
            font-weight: bold;
            margin: 0 auto;
            overflow: hidden; /* Ensure image stays within the circle */
        }

        .profile-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 50%;
            display: block;
        }

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

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

        /* Skills Section */
        .skills {
            background: var(--bg-secondary);
        }

        .skills-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }

        .skill-card {
            background: var(--bg-primary);
            padding: 2rem;
            border-radius: 15px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s ease;
        }

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

        .skill-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.5rem;
            font-weight: bold;
            margin: 0 auto 1rem;
        }

        .skill-card h3 {
            color: var(--primary-dark);
            margin-bottom: 0.5rem;
        }

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

        .project-card {
            background: var(--bg-secondary);
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s ease;
        }

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

        .project-image {
            height: 200px;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 3rem;
        }

        .portfolio-img {
            max-width: 90%;
            max-height: 90%;
            object-fit: contain;
            border-radius: 10px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
        }

        .project-content {
            padding: 1.5rem;
        }

        .project-content h3 {
            color: var(--primary-dark);
            margin-bottom: 0.5rem;
        }

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

        .tech-tag {
            background: var(--primary-light);
            color: white;
            padding: 0.25rem 0.75rem;
            border-radius: 15px;
            font-size: 0.8rem;
        }

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

        .contact-content {
            max-width: 600px;
            margin: 0 auto;
            text-align: center;
        }

        .contact-info {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }

        .contact-item {
            padding: 1.5rem;
            background: var(--bg-primary);
            border-radius: 15px;
            text-align: center;
        }

        .contact-icon {
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
            margin: 0 auto 1rem;
        }

        /* Footer */
        footer {
            background: var(--primary-dark);
            color: white;
            text-align: center;
            padding: 2rem 0;
        }

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

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

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

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

            .btn {
                width: 200px;
            }
        }

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

        .fade-in {
            animation: fadeInUp 0.6s ease forwards;
        }

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