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

        :root {
            --primary-color: #262662;
            --secondary-color: #8b5cf6;
            --accent-color: #181869;
            --text-primary: #011023;
            --text-secondary: #0e2964;
            --bg-primary: #e0e3fff5;
            --bg-secondary: #f9fafb;
            --border-color: #bcc9e3;
            --shadow: 0 10px 25px -3px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }

        [data-theme="dark"] {
             --primary-color: #8b5cf6;        
            --secondary-color: #a78bfa;     
            --accent-color: #262662;          
            --text-primary: #f9fafb;          
            --text-secondary: #d1d5db;        
            --bg-primary: #181824;            
            --bg-secondary: #232336;          
            --border-color: #374151;          
            --shadow: 0 10px 25px -3px rgba(0, 0, 0, 0.7);
}

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

        /* Navigation */
        .navbar {
            position: fixed;
            top: 0;
            width: 100%;
            background: var(--bg-primary);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            padding: 1rem 0;
            transition: var(--transition);
        }

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

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

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

        .nav-links a {
            text-decoration: none;
            color: var(--text-primary);
            font-weight: 500;
            transition: var(--transition);
        }

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

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

        .theme-toggle {
            background: none;
            border: 2px solid var(--border-color);
            border-radius: 50%;
            width: 40px;
            height: 40px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .theme-toggle:hover {
            border-color: var(--primary-color);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            cursor: pointer;
        }

        .mobile-menu span {
            width: 25px;
            height: 3px;
            background: var(--text-primary);
            margin: 3px 0;
            transition: var(--transition);
        }

        /* Hero Section */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
            padding: 2rem;
            text-align: center;
        }

        .hero-content {
            max-width: 800px;
        }

        .profile-img {
            width: 300px;
            height: 300px;
            border-radius: 50%;
            object-fit: cover;
            border: 4px solid var(--primary-color);
            margin-bottom: 2rem;
            box-shadow: var(--shadow);
        }

        .hero h1 {
            font-size: 3rem;
            margin-bottom: 1rem;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            background-clip: text;
        }

        .hero p {
            font-size: 1.2rem;
            color: var(--text-secondary);
            margin-bottom: 2rem;
        }

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

        .btn {
            padding: 1rem 2rem;
            border: none;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            display: inline-block;
        }

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

        .btn-primary:hover {
            background: var(--secondary-color);
            transform: translateY(-2px);
        }

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

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

        /* Sections */
        .section {
            padding: 5rem 2rem;
            max-width: 1200px;
            margin: 0 auto;
        }

        .section h2 {
            text-align: center;
            font-size: 2.5rem;
            margin-bottom: 3rem;
            color: var(--text-primary);
        }

        /* Summary */
        .summary-content {
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* Education */
        .education-card {
            background: var(--bg-secondary);
            padding: 2rem;
            border-radius: 15px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow);
            max-width: 600px;
            margin: 0 auto;
        }

        .education-card h3 {
            color: var(--primary-color);
            margin-bottom: 1rem;
        }

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

        .skill-category {
            background: var(--bg-secondary);
            padding: 2rem;
            border-radius: 15px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow);
        }

        .skill-category h3 {
            color: var(--primary-color);
            margin-bottom: 1rem;
        }

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

        .skill-tag {
            background: var(--primary-color);
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 25px;
            font-size: 0.9rem;
        }

        /* Projects */
        .projects-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }

        .project-card {
            background: var(--bg-secondary);
            padding: 2rem;
            border-radius: 15px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .project-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.2);
        }

        .project-card h3 {
            color: var(--primary-color);
            margin-bottom: 1rem;
        }

        .project-description {
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }

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

        .tech-tag {
            background: var(--accent-color);
            color: white;
            padding: 0.3rem 0.8rem;
            border-radius: 15px;
            font-size: 0.8rem;
        }

        /* Achievements */
        .achievements-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .achievement-item {
            background: var(--bg-secondary);
            padding: 1.5rem;
            border-radius: 10px;
            border: 1px solid var(--border-color);
            margin-bottom: 1rem;
            border-left: 4px solid var(--primary-color);
        }

        .achievement-item h3 {
            color: var(--primary-color);
            margin-bottom: 0.5rem;
        }

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

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

        .contact-item {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--text-secondary);
        }

        .contact-item a {
            color: var(--primary-color);
            text-decoration: none;
        }

        
        /* Responsive Design */
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                background: var(--bg-primary);
                position: absolute;
                top: 60px; 
                 right: 1rem;
                 width: 180px;
                 padding: 0.5rem 0;
                 z-index: 1001;
                  box-shadow: 0 4px 16px rgba(0,0,0,0.05);
            }

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

            .mobile-menu {
                display: flex;
            }

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

            .section {
                padding: 3rem 1rem;
            }

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

            .contact-info {
                flex-direction: column;
                gap: 1rem;
            }
        }