:root {
            --primary: #2ecc71;
            --secondary: #27ae60;
            --dark: #121212;
            --light: #ffffff;
            --bg: #1a1a1a;
            --border: #ced4da;
            --text: #495057;
        }

        [data-theme="light"] {
            --dark: #f8f9fa;
            --light: #121212;
            --bg: #ffffff;
            --border: #dee2e6;
            --text: #212529;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Poppins', sans-serif;
            transition: background 0.3s ease;
        }

        body {
            background: var(--bg);
            color: var(--light);
        }

        /* Header and Navigation Styles */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            padding: 1.2rem 5%;
            background: rgba(26, 26, 26, 0.98);
            backdrop-filter: blur(10px);
            z-index: 1000;
            transition: all 0.3s ease;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        .header.scrolled {
            padding: 1rem 5%;
            background: rgba(26, 26, 26, 0.98);
            box-shadow: 0 5px 20px rgba(0,0,0,0.1);
        }

        [data-theme="light"] .header {
            background: rgba(255, 255, 255, 0.98);
        }

        [data-theme="light"] .header.scrolled {
            background: rgba(255, 255, 255, 0.98);
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1400px;
            margin: 0 auto;
        }

        .logo {
            font-size: 1.8rem;
            color: var(--primary);
            font-weight: 700;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            transition: color 0.3s ease;
        }

        .logo i {
            font-size: 2rem;
        }

        .logo:hover {
            color: var(--secondary);
        }

        .navbar {
            display: flex;
            gap: 2.5rem;
            align-items: center;
        }

        .nav-link {
            color: var(--light);
            text-decoration: none;
            font-weight: 500;
            font-size: 1rem;
            position: relative;
            padding: 0.5rem 0;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width 0.3s ease;
        }

        .nav-link.active::after {
            width: 100%;
        }

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

        .nav-link.active {
            color: var(--primary);
        }

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

        .theme-toggle {
            background: none;
            border: none;
            color: var(--light);
            font-size: 1.2rem;
            cursor: pointer;
            padding: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .theme-toggle i {
            transition: transform 0.3s ease;
        }

        .theme-toggle:hover i {
            transform: rotate(180deg);
        }

        .menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--light);
            font-size: 1.5rem;
            cursor: pointer;
            z-index: 1001;
            padding: 0.5rem;
            transition: transform 0.3s ease;
            -webkit-tap-highlight-color: transparent;
        }

        .menu-btn:hover {
            color: var(--primary);
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 1rem;
            z-index: 1001;
        }

        @media (max-width: 991px) {
            .menu-btn {
                display: block;
            }

            .navbar {
                display: flex;
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                height: 100vh;
                background: var(--bg);
                flex-direction: column;
                justify-content: center;
                align-items: center;
                gap: 2rem;
                z-index: 1000;
                padding: 5rem 2rem;
                opacity: 0;
                visibility: hidden;
                pointer-events: none;
                transition: all 0.3s ease-in-out;
            }

            .navbar.active {
                opacity: 1;
                visibility: visible;
                pointer-events: auto;
                background: rgba(26, 26, 26, 0.98);
                backdrop-filter: blur(10px);
            }

            [data-theme="light"] .navbar.active {
                background: rgba(255, 255, 255, 0.98);
            }

            .nav-link {
                font-size: 1.5rem;
                padding: 1rem 2rem;
                width: 100%;
                text-align: center;
                border-radius: 10px;
                transition: all 0.3s ease;
            }

            .nav-link:hover {
                background: rgba(46, 204, 113, 0.1);
                color: var(--primary);
            }

            .nav-link::after {
                display: none;
            }

            .nav-link.active {
                color: var(--primary);
                background: rgba(46, 204, 113, 0.1);
            }

            .header {
                padding: 1rem 5%;
            }

            .logo {
                font-size: 1.5rem;
            }

            .logo i {
                font-size: 1.8rem;
            }

            .theme-toggle {
                font-size: 1rem;
                padding: 0.5rem;
            }

            .theme-toggle span {
                display: none;
            }
        }

        /* Theme Toggle Styles */
        .theme-toggle {
            background: none;
            border: none;
            color: var(--light);
            font-size: 1.2rem;
            cursor: pointer;
            padding: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            transition: all 0.3s ease;
        }

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

        .theme-toggle i {
            transition: transform 0.3s ease;
        }

        .theme-toggle:hover i {
            transform: rotate(180deg);
        }

        /* Hero Section */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: 7% 5%;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            width: 200%;
            height: 200%;
            background: linear-gradient(45deg, 
                var(--primary) 20%, 
                var(--secondary) 50%, 
                var(--primary) 80%);
            animation: rotate 20s linear infinite;
            opacity: 0.1;
        }

        .hero-container {
            position: relative;
            z-index: 1;
            max-width: 1400px;
            margin: 0 auto;
            width: 100%;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .hero-content {
            z-index: 1;
        }

        .hero-subtitle {
            font-size: 1.2rem;
            color: var(--primary);
            margin-bottom: 1rem;
            font-weight: 500;
            opacity: 0;
            animation: slideUp 0.5s ease forwards;
        }

        .hero-title {
            font-size: 3.5rem;
            line-height: 1.2;
            margin-bottom: 1.5rem;
            font-weight: 700;
            opacity: 0;
            animation: slideUp 0.5s ease forwards;
            animation-delay: 0.2s;
        }

        .dynamic-text {
            display: inline-block;
            margin-bottom: 2rem;
            position: relative;
            height: 30px;
            opacity: 0;
            animation: slideUp 0.5s ease forwards;
            animation-delay: 0.4s;
        }

        .dynamic-text span {
            display: none;
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--primary);
            position: absolute;
            left: 0;
            animation: fadeInOut 4s ease infinite;
        }

        .dynamic-text span.active {
            display: inline-block;
        }

        @keyframes fadeInOut {
            0%, 100% { opacity: 0; transform: translateY(20px); }
            20%, 80% { opacity: 1; transform: translateY(0); }
        }

        .hero-description {
            font-size: 1.1rem;
            line-height: 1.8;
            margin-bottom: 2rem;
            opacity: 0;
            animation: slideUp 0.5s ease forwards;
            animation-delay: 0.6s;
        }

        .hero-buttons {
            display: flex;
            gap: 1rem;
            opacity: 0;
            animation: slideUp 0.5s ease forwards;
            animation-delay: 0.8s;
        }

        .hero-btn {
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-weight: 500;
            text-decoration: none;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

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

        .primary-btn:hover {
            background: var(--secondary);
            border-color: var(--secondary);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(46, 204, 113, 0.2);
        }

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

        .secondary-btn:hover {
            background: var(--light);
            color: var(--dark);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(255, 255, 255, 0.1);
        }

        .profile-container {
            position: relative;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            overflow: hidden;
            margin: 20px;
            box-shadow: 0 0 25px rgba(0, 0, 0, 0.3);
            border: 4px solid var(--primary);
            animation: glow 2s ease-in-out infinite;
        }

        @keyframes glow {
            0% {
                box-shadow: 0 0 25px rgba(0, 0, 0, 0.3), 0 0 10px var(--primary);
            }
            50% {
                box-shadow: 0 0 25px rgba(0, 0, 0, 0.3), 0 0 20px var(--primary), 0 0 30px var(--primary);
            }
            100% {
                box-shadow: 0 0 25px rgba(0, 0, 0, 0.3), 0 0 10px var(--primary);
            }
        }

        .profile-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .profile-container:hover .profile-img {
            transform: scale(1.02);
        }

        .profile-container:hover {
            border-color: var(--light);
            animation: none;
            box-shadow: 0 0 25px rgba(0, 0, 0, 0.3), 0 0 30px var(--primary);
        }

        .social-links {
            display: flex;
            gap: 1rem;
            margin-top: 2rem;
            opacity: 0;
            animation: slideUp 0.5s ease forwards;
            animation-delay: 1s;
        }

        .social-link {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--light);
            text-decoration: none;
            transition: all 0.3s ease;
            font-size: 1.1rem;
        }

        .social-link:hover {
            background: var(--primary);
            transform: translateY(-3px);
        }

        @keyframes slideUp {
            from {
                transform: translateY(30px);
                opacity: 0;
            }
            to {
                transform: translateY(0);
                opacity: 1;
            }
        }

        @keyframes slideLeft {
            from {
                transform: translateX(50px);
                opacity: 0;
            }
            to {
                transform: translateX(0);
                opacity: 1;
            }
        }

        @keyframes slideRight {
            from {
                transform: translate(-30px, -50%);
                opacity: 0;
            }
            to {
                transform: translate(0, -50%);
                opacity: 1;
            }
        }

        @keyframes rotate {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        @keyframes shine {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        @media (max-width: 991px) {
            .hero-container {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .profile-container {
                margin: 0 auto;
                width: 280px;
                height: 280px;
            }

            .hero-buttons, .social-links {
                justify-content: center;
            }
        }

        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
        }

        @media (max-width: 576px) {
            .hero {
                padding: 100px 5% 40px;
            }

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

            .profile-container {
                width: 220px;
                height: 220px;
            }
        }

        @media (max-width: 400px) {
            .hero-title {
                font-size: 1.8rem;
            }

            .profile-container {
                width: 200px;
                height: 200px;
            }

            .hero-buttons {
                padding: 0 1rem;
            }
        }

        /* Responsive Design */
        @media (max-width: 1200px) {
            .hero-container, .footer-container {
                max-width: 960px;
            }

            .hero-title {
                font-size: 3rem;
            }

            .profile-container {
                width: 320px;
                height: 320px;
            }

            .footer-content {
                gap: 3rem;
            }
        }

        @media (max-width: 991px) {
            .hero-container {
                grid-template-columns: 1fr;
                text-align: center;
                padding: 2rem 0;
            }

            .hero-content {
                order: 2;
            }

            .profile-container {
                order: 1;
                margin: 0 auto;
                width: 280px;
                height: 280px;
            }

            .hero-buttons {
                justify-content: center;
            }

            .hero-title {
                font-size: 2.8rem;
            }

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

            .footer-about {
                grid-column: span 2;
            }

            section {
                padding: 60px 0;
            }

            .section-title {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .hero {
                padding: 120px 5% 60px;
            }

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

            .hero-subtitle {
                font-size: 1.1rem;
            }

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

            .hero-buttons {
                flex-direction: column;
                gap: 1rem;
            }

            .hero-btn {
                width: 100%;
                justify-content: center;
            }

            .profile-container {
                width: 250px;
                height: 250px;
            }

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

            .footer-about {
                grid-column: span 1;
            }

            .footer-links a {
                justify-content: center;
            }

            .footer-contact p {
                justify-content: center;
            }

            .footer-social {
                justify-content: center;
            }

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

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

            .skills-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .hero {
                padding: 100px 5% 40px;
            }

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

            .profile-container {
                width: 220px;
                height: 220px;
            }

            .section-title {
                font-size: 1.8rem;
                margin-bottom: 2rem;
            }

            .footer {
                padding: 3rem 0 1.5rem;
            }

            .footer-section h3 {
                font-size: 1.2rem;
            }

            .footer-content {
                gap: 2rem;
            }

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

        @media (max-width: 400px) {
            .hero-title {
                font-size: 1.8rem;
            }

            .profile-container {
                width: 200px;
                height: 200px;
            }

            .hero-buttons {
                padding: 0 1rem;
            }

            .footer-social {
                flex-wrap: wrap;
            }
        }

        /* Touch Device Optimizations */
        @media (hover: none) {
            .hero-btn:active {
                transform: translateY(-3px);
            }

            .social-link:active,
            .footer-social a:active {
                background: var(--primary);
                transform: translateY(-3px);
            }

            .footer-links a:active {
                color: var(--primary);
                transform: translateX(5px);
            }
        }

        /* Dark Mode Optimization */
        @media (prefers-color-scheme: dark) {
            [data-theme="light"] {
                --dark: #f8f9fa;
                --light: #121212;
                --bg: #ffffff;
            }
        }

        /* Print Styles */
        @media print {
            .hero {
                height: auto;
                padding: 20px;
            }

            .footer {
                display: none;
            }

            .hero-buttons,
            .social-links {
                display: none;
            }
        }

        /* High Contrast Mode */
        @media (forced-colors: active) {
            .hero-btn,
            .social-link,
            .footer-social a {
                border: 2px solid currentColor;
            }
        }

        /* Reduced Motion */
        @media (prefers-reduced-motion: reduce) {
            * {
                animation: none !important;
                transition: none !important;
            }
        }

        /* Content Sections */
        section {
            padding: 5rem 5%;
            position: relative;
        }

        .section-title {
            font-size: 2.5rem;
            margin-bottom: 3rem;
            text-align: center;
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background: var(--primary);
        }

        /* Timeline */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline-item {
            padding: 20px;
            background: rgba(255,255,255,0.05);
            border-radius: 15px;
            margin-bottom: 30px;
            position: relative;
            border-left: 4px solid var(--primary);
        }

        .timeline-content h4 {
            color: var(--primary);
            font-size: 1.3rem;
            margin-bottom: 10px;
            font-weight: 600;
        }

        .timeline-content .institution-name {
            color: var(--light);
            font-size: 1.1rem;
            margin-bottom: 8px;
            font-weight: 500;
            opacity: 1;
        }

        .timeline-content .location {
            color: var(--light);
            opacity: 0.8;
            font-size: 0.95rem;
            font-style: italic;
        }

        .timeline-content .text-primary {
            display: inline-block;
            margin: 8px 0;
            padding: 4px 12px;
            background: rgba(var(--primary-rgb), 0.1);
            border-radius: 15px;
            font-weight: 500;
        }

        .timeline-content .timeline-description {
            color: var(--primary);
            font-weight: 600;
            margin-top: 8px;
            font-size: 1rem;
        }

        /* Skills Grid */
        .skills-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
        }

        .skill-card {
            background: rgba(255,255,255,0.05);
            padding: 1.5rem;
            border-radius: 10px;
            text-align: center;
            transition: transform 0.3s ease;
        }

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

        /* Projects Grid */
        .projects-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
            padding: 1rem;
        }

        .project-card {
            background: rgba(255,255,255,0.05);
            border-radius: 10px;
            padding: 1.5rem;
            cursor: pointer;
            transition: transform 0.3s ease;
        }

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

        .project-card h3 {
            margin-bottom: 0.8rem;
            color: var(--primary);
        }

        .project-card p {
            margin-bottom: 1rem;
            font-size: 0.9rem;
            opacity: 0.8;
        }

        .project-card .demo-link {
            display: inline-block;
            padding: 0.5rem 1rem;
            background: var(--primary);
            color: var(--light);
            border-radius: 5px;
            text-decoration: none;
            font-size: 0.9rem;
            transition: background 0.3s ease;
        }

        .project-card .demo-link:hover {
            background: var(--secondary);
        }

        /* Modal Styles */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.8);
            z-index: 1000;
        }

        .modal-content {
            position: relative;
            background: var(--dark);
            width: 90%;
            max-width: 800px;
            margin: 50px auto;
            padding: 2rem;
            border-radius: 10px;
            border: 1px solid rgba(255,255,255,0.1);
        }

        .close-modal {
            position: absolute;
            right: 1.5rem;
            top: 1.5rem;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--light);
        }

        .modal-content h2 {
            color: var(--primary);
            margin-bottom: 1rem;
        }

        .modal-content .project-details {
            margin: 1.5rem 0;
        }

        .modal-content .tech-list {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .modal-content .tech-list span {
            background: rgba(255,255,255,0.1);
            padding: 0.4rem 0.8rem;
            border-radius: 5px;
            font-size: 0.8rem;
        }

        /* Contact Form */
        .contact-form .form-control {
            background: rgba(255,255,255,0.05);
            border: 1px solid var(--border);
            color: var(--text);
            margin-bottom: 1.5rem;
            padding: 1rem;
            border-radius: 0.5rem;
        }

        .contact-form .form-control:focus {
            box-shadow: 0 0 0 3px rgba(46, 204, 113, 0.25);
            border-color: var(--primary);
        }

        /* Light theme adjustments */
        [data-theme="light"] .contact-form .form-control {
            background: #f8f9fa;
            border: 1px solid #dee2e6;
            color: #212529;
        }

        [data-theme="light"] .contact-form label {
            color: #212529;
        }

        [data-theme="light"] .contact .heading {
            color: #212529;
        }

        [data-theme="light"] .contact p {
            color: #495057;
        }

        [data-theme="light"] .contact-form .btn {
            background: var(--primary);
            color: #fff;
        }

        [data-theme="light"] .contact-form .form-control:focus {
            background: #ffffff;
            border-color: var(--primary);
            color: #212529;
        }

        /* Footer */
        footer {
            background: var(--dark);
            padding: 2rem;
            text-align: center;
            margin-top: 5rem;
        }

        @media (max-width: 768px) {
            .hero {
                flex-direction: column;
                text-align: center;
            }

            .profile-container {
                margin: 2rem auto;
            }
        }

        /* About Section Styles */
        .about-card {
            background: rgba(255,255,255,0.05);
            padding: 3rem;
            border-radius: 15px;
            margin-top: 2rem;
        }

        .section-subtitle {
            color: var(--primary);
            font-size: 1.5rem;
            position: relative;
            display: inline-block;
        }

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

        .detail-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
        }

        .detail-item i {
            font-size: 1.5rem;
            margin-top: 0.5rem;
        }

        .detail-content h4 {
            font-size: 1.1rem;
            margin-bottom: 0.5rem;
            color: var(--primary);
        }

        .detail-content p {
            margin: 0;
            opacity: 0.9;
        }

        .social-icons {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
        }

        .social-icon {
            width: 50px;
            height: 50px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255,255,255,0.1);
            color: var(--light);
            font-size: 1.5rem;
            transition: all 0.3s ease;
        }

        .social-icon:hover {
            background: var(--primary);
            color: var(--light);
            transform: translateY(-5px);
        }

        @media (max-width: 768px) {
            .about-card {
                padding: 2rem;
            }

            .details-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }

        /* Contact Section Styles */
        .contact-card {
            background: rgba(255,255,255,0.05);
            padding: 2rem;
            border-radius: 15px;
            height: 100%;
        }

        .quick-contact {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
        }

        .contact-item i {
            font-size: 1.5rem;
            margin-top: 0.5rem;
        }

        .contact-item h4 {
            font-size: 1.1rem;
            margin-bottom: 0.3rem;
            color: var(--primary);
        }

        .contact-item p {
            margin: 0;
            opacity: 0.9;
        }

        .contact-form-wrapper {
            background: rgba(255,255,255,0.05);
            padding: 2rem;
            border-radius: 15px;
        }

        .form-floating > .form-control,
        .form-floating > .form-control-plaintext {
            background: rgba(255,255,255,0.1);
            border: none;
            color: var(--light);
        }

        .form-floating > .form-control:focus {
            background: rgba(255,255,255,0.15);
            box-shadow: 0 0 0 0.25rem rgba(46, 204, 113, 0.25);
        }

        .form-floating > label {
            color: rgba(255,255,255,0.7);
        }

        .form-control::-webkit-input-placeholder {
            color: rgba(255,255,255,0.5);
        }

        .contact-form textarea.form-control {
            resize: none;
        }

        @media (max-width: 991px) {
            .contact-info {
                margin-bottom: 2rem;
            }
        }

        /* Footer Styles */
        .footer {
            background: var(--dark);
            padding: 4rem 0 2rem;
            position: relative;
            overflow: hidden;
        }

        .footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 1px;
            background: linear-gradient(to right, transparent, var(--primary), transparent);
        }

        .footer-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 5%;
        }

        .footer-content {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 4rem;
            margin-bottom: 3rem;
        }

        .footer-section h3 {
            color: var(--primary);
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            font-weight: 600;
        }

        .footer-about p {
            color: var(--light);
            opacity: 0.8;
            line-height: 1.8;
            margin-bottom: 1.5rem;
        }

        .footer-links {
            list-style: none;
            padding: 0;
        }

        .footer-links li {
            margin-bottom: 1rem;
        }

        .footer-links a {
            color: var(--light);
            text-decoration: none;
            opacity: 0.8;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .footer-links a:hover {
            color: var(--primary);
            opacity: 1;
            transform: translateX(5px);
        }

        .footer-contact p {
            color: var(--light);
            opacity: 0.8;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .footer-contact i {
            color: var(--primary);
        }

        .footer-social {
            display: flex;
            gap: 1rem;
            margin-top: 1.5rem;
        }

        .footer-social a {
            width: 35px;
            height: 35px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--light);
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .footer-social a:hover {
            background: var(--primary);
            transform: translateY(-3px);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-bottom p {
            color: var(--light);
            opacity: 0.8;
        }

        @media (max-width: 991px) {
            .footer-content {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
        }

        @media (max-width: 768px) {
            .footer-content {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .footer-links a {
                justify-content: center;
            }

            .footer-contact p {
                justify-content: center;
            }

            .footer-social {
                justify-content: center;
            }
        }

        /* Mobile Footer Optimization */
        @media (max-width: 768px) {
            .footer {
                padding: 3rem 0 1.5rem;
            }

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

            /* Hide services section on mobile */
            .footer-services {
                display: none;
            }

            /* Simplified about section */
            .footer-about p {
                display: none;
            }

            .footer-about {
                margin-bottom: 0;
            }

            /* Center all content */
            .footer-section {
                text-align: center;
            }

            .footer-social {
                justify-content: center;
                margin-top: 1rem;
            }

            /* Optimize quick links */
            .footer-links {
                display: flex;
                flex-wrap: wrap;
                justify-content: center;
                gap: 1rem;
            }

            .footer-links li {
                margin-bottom: 0;
            }

            .footer-links a {
                font-size: 0.9rem;
                padding: 0.5rem 1rem;
                background: rgba(255, 255, 255, 0.1);
                border-radius: 20px;
                justify-content: center;
            }

            .footer-links a i {
                display: none;
            }

            /* Compact contact info */
            .footer-contact {
                display: flex;
                flex-direction: column;
                align-items: center;
            }

            .footer-contact p {
                font-size: 0.9rem;
                margin-bottom: 0.5rem;
            }

            .footer-contact p:not(:nth-child(2), :nth-child(3)) {
                display: none;
            }
        }

        @media (max-width: 576px) {
            .footer {
                padding: 2rem 0 1rem;
            }

            .footer-section h3 {
                font-size: 1.1rem;
                margin-bottom: 1rem;
            }

            .footer-links a {
                padding: 0.4rem 0.8rem;
                font-size: 0.85rem;
            }

            .footer-social a {
                width: 32px;
                height: 32px;
            }

            .footer-bottom {
                padding-top: 1rem;
            }

            .footer-bottom p {
                font-size: 0.85rem;
            }
        }

        /* Skills Section Styles */
        .skills-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .skills-category {
            margin-bottom: 3rem;
        }

        .skills-category h3 {
            color: var(--primary);
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            text-align: center;
        }

        .skills-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin-bottom: 2rem;
        }

        .skill-item {
            background: var(--dark);
            padding: 1.5rem;
            border-radius: 10px;
            text-align: center;
            transition: transform 0.3s ease;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

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

        .skill-icon {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 1rem;
        }

        .skill-name {
            color: var(--light);
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .skill-level {
            width: 100%;
            height: 6px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 3px;
            margin-top: 1rem;
            overflow: hidden;
        }

        .skill-progress {
            height: 100%;
            background: var(--primary);
            border-radius: 3px;
            transition: width 1s ease;
        }

        @media (max-width: 768px) {
            .skills-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 480px) {
            .skills-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Additional styles for skill status */
        .skill-status {
            color: var(--light);
            opacity: 0.9;
            margin-top: 0.5rem;
            font-size: 0.9rem;
            font-style: italic;
        }

        /* Project Styles */
        .projects-grid {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }

        .project-card {
            background: var(--dark);
            border-radius: 15px;
            padding: 25px;
            margin-bottom: 30px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
            border: 1px solid rgba(255, 255, 255, 0.1);
            cursor: pointer;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .project-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(46, 204, 113, 0.2);
        }

        .project-header {
            display: flex;
            align-items: center;
            margin-bottom: 15px;
        }

        .project-header i {
            font-size: 2rem;
            color: var(--primary);
            margin-right: 15px;
        }

        .project-header h3 {
            color: var(--light);
            margin: 0;
            font-size: 1.5rem;
        }

        .project-preview {
            color: var(--light);
            opacity: 0.9;
            margin-bottom: 15px;
            line-height: 1.6;
        }

        .project-tech-preview {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .tech-tag {
            background: rgba(46, 204, 113, 0.1);
            color: var(--primary);
            padding: 5px 12px;
            border-radius: 15px;
            font-size: 0.9rem;
        }

        /* Modal Styles */
        .project-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.8);
            z-index: 1000;
        }

        .modal-content {
            position: relative;
            background: var(--dark);
            margin: 5% auto;
            padding: 30px;
            width: 90%;
            max-width: 800px;
            border-radius: 15px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .close-modal {
            position: absolute;
            right: 20px;
            top: 15px;
            color: var(--light);
            font-size: 28px;
            cursor: pointer;
        }

        .project-details {
            margin-top: 20px;
        }

        .project-description {
            color: var(--light);
            line-height: 1.6;
            margin-bottom: 20px;
        }

        .project-features {
            margin: 20px 0;
        }

        .project-features h4 {
            color: var(--primary);
            margin-bottom: 15px;
        }

        .project-features ul {
            list-style: none;
            padding: 0;
        }

        .project-features li {
            color: var(--light);
            margin: 10px 0;
            display: flex;
            align-items: center;
        }

        .project-features li i {
            color: var(--primary);
            margin-right: 10px;
        }

        .project-links {
            display: flex;
            gap: 15px;
            margin-top: 25px;
        }

        .project-link {
            display: inline-flex;
            align-items: center;
            padding: 10px 20px;
            background: var(--primary);
            color: var(--dark);
            text-decoration: none;
            border-radius: 25px;
            transition: all 0.3s ease;
        }

        .project-link:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(46, 204, 113, 0.3);
        }

        .project-link i {
            margin-right: 8px;
        }

        .demo-container {
            background: #1a1a1a;
            padding: 20px;
            border-radius: 10px;
            margin-top: 20px;
            overflow-x: auto;
        }

        .demo-output {
            color: #33ff33;
            font-family: 'Courier New', monospace;
            margin: 0;
            white-space: pre-wrap;
        }

        .project-links {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }

        .project-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            background: var(--primary);
            color: var(--dark);
            text-decoration: none;
            border-radius: 20px;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            font-size: 0.9rem;
        }

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

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

        .project-link:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(46, 204, 113, 0.3);
        }

        .project-link i {
            margin-right: 8px;
        }

        Certifications Section
        .certifications {
            padding: 6rem 9% 2rem;
        }

        .certification-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }

        .certification-item {
            background: var(--card-bg);
            padding: 1.5rem;
            border-radius: 1rem;
            text-align: center;
            border: 2px solid transparent;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .certification-item:hover {
            border-color: var(--primary);
            transform: translateY(-5px);
        }

        .certification-item h3 {
            font-size: 1.4rem;
            margin-bottom: 1rem;
            color: var(--text);
        }

        .certification-item p {
            font-size: 0.9rem;
            color: var(--text);
            margin-bottom: 1rem;
        }

        .certification-item .date {
            color: var(--primary);
            font-size: 0.9rem;
        }

        /* Certificate Modal */
        .certificate-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.9);
            z-index: 1000;
            justify-content: center;
            align-items: center;
            padding: 2rem;
        }

        .certificate-modal.active {
            display: flex;
        }

        .certificate-modal img {
            max-width: 90%;
            max-height: 90vh;
            object-fit: contain;
            border-radius: 0.5rem;
        }

        .certificate-modal .close-btn {
            position: absolute;
            top: 1rem;
            right: 1rem;
            color: #fff;
            font-size: 2rem;
            cursor: pointer;
            background: none;
            border: none;
            padding: 0.5rem;
        }

        .certificate-modal .close-btn:hover {
            color: var(--primary);
        }