:root {
            --primary-color: #2d46b9;
            --secondary-color: #1e308a;
            --accent-color: #4e67d7;
            --text-color: #333;
            --light-text: #f8f9fa;
            --bg-color: #f8f9fa;
            --card-bg: #ffffff;
            --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Poppins', sans-serif;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: var(--bg-color);
            color: var(--text-color);
            line-height: 1.6;
            overflow-x: hidden;
        }

        section {
            padding: 80px 0;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        .section-title {
            font-size: 2.5rem;
            margin-bottom: 20px;
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 0;
            width: 50px;
            height: 4px;
            background: var(--primary-color);
            transition: var(--transition);
        }

        .section-title:hover::after {
            width: 100%;
        }

        .btn {
            display: inline-block;
            padding: 12px 28px;
            background: var(--primary-color);
            color: var(--light-text);
            border: none;
            border-radius: 5px;
            font-weight: bold;
            text-decoration: none;
            cursor: pointer;
            transition: var(--transition);
            font-size: 1rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            box-shadow: var(--shadow);
        }

        .btn:hover {
            background: var(--secondary-color);
            transform: translateY(-3px);
            box-shadow: 0 7px 20px rgba(0, 0, 0, 0.2);
        }

        /* Preloader */
        .preloader {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--bg-color);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 9999;
            transition: opacity 0.5s, visibility 0.5s;
        }

        .preloader.fade-out {
            opacity: 0;
            visibility: hidden;
        }

        .loader {
            width: 50px;
            height: 50px;
            border: 5px solid #f3f3f3;
            border-top: 5px solid var(--primary-color);
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

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

        /* Header Styles */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            box-shadow: var(--shadow);
            z-index: 1000;
            transition: var(--transition);
        }

        header.sticky {
            padding: 10px 0;
            background: rgba(255, 255, 255, 0.98);
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
        }

        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color);
            text-decoration: none;
        }

        .logo span {
            color: var(--accent-color);
        }

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

        .nav-links li {
            margin-left: 30px;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--text-color);
            font-weight: 500;
            font-size: 1.1rem;
            position: relative;
            transition: var(--transition);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary-color);
            transition: var(--transition);
        }

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

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

        .menu-toggle {
            display: none;
            cursor: pointer;
            font-size: 1.5rem;
        }

        /* Hero Section */


        /* Dark Theme Variables */
        .dark-theme {
            --primary-color: #4e67d7;
            --secondary-color: #3a52c2;
            --accent-color: #5d7aff;
            --text-color: #f0f0f0;
            --light-text: #ffffff;
            --bg-color: #121212;
            --card-bg: #1e1e1e;
            --shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
            
            background-color: var(--bg-color);
            color: var(--text-color);
        }

        .theme-toggle {
            position: static; 
            background: var(--primary-color);
            color: white;
            border: none;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 1rem;
            box-shadow: var(--shadow);
            transition: var(--transition);
            
        }

        .theme-toggle:hover {
            transform: scale(1.1);
        }


        .dark-theme header {
            background: rgba(30, 30, 30, 0.95);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        }

        .dark-theme .nav-links a {
            color: var(--light-text);
        }

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

        .dark-theme .section-title {
            color: var(--light-text);
        }

        .dark-theme .project-card,
        .dark-theme .skill-category,
        .dark-theme .timeline-item,
        .dark-theme .certification-card,
        .dark-theme .contact-card,
        .dark-theme .form-group .form-control,
        .dark-theme .contact-form form {
            background: var(--card-bg);
            box-shadow: var(--shadow);
        }

        .dark-theme .form-control {
            background: #2a2a2a;
            border-color: #444;
            color: white;
        }

        .dark-theme .skill-item {
            background: #2a2a2a;
            color: var(--light-text);
        }

        .dark-theme .project-tag {
            background: #333;
            color: var(--accent-color);
        }

        .dark-theme #about,
        .dark-theme #skills,
        .dark-theme #projects,
        .dark-theme #education,
        .dark-theme #contact {
            background: var(--bg-color);
        }

        .dark-theme .timeline-institute,
        .dark-theme .certification-issuer,
        .dark-theme .contact-details p,
        .dark-theme .contact-details a {
            color: #bbb;
        }

        .dark-theme .quick-links a {
            color: #999;
        }

        .dark-theme .quick-links a:hover {
            color: white;
        }

        #hero {
            min-height: 100vh;
            position: relative;
            overflow: hidden;
            background: linear-gradient(135deg, rgba(45, 70, 185, 0.1) 0%, rgba(233, 236, 255, 0.9) 100%);

        }

        .dark-theme #hero {
            background: linear-gradient(135deg, rgba(30,30,30,0.9) 0%, rgba(45,45,60,0.9) 100%);
        }

        .dark-theme footer {
            background: #111;
        }

        .dark-theme .footer-social a {
            background: #333;
        }

        .dark-theme .footer-social a:hover {
            background: var(--accent-color);
        }

        .hero-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 80px 0px;
        }

        .hero-text {
            flex: 1;
            padding-right: 20px;
        }

        .hero-image {
            flex: 1;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .hero-img-container {
            position: relative;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            overflow: hidden;
            box-shadow: var(--shadow);
            animation: float 6s ease-in-out infinite;
        }

        @keyframes float {
            0% {
                transform: translateY(0px);
            }
            50% {
                transform: translateY(-20px);
            }
            100% {
                transform: translateY(0px);
            }
        }

        .profile-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .hero-text h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            color: var(--text-color);
        }

        .hero-text h1 span {
            color: var(--primary-color);
            position: relative;
            display: inline-block;
        }

        .hero-text h1 span::after {
            content: '';
            position: absolute;
            bottom: 5px;
            left: 0;
            width: 100%;
            height: 8px;
            background: rgba(78, 103, 215, 0.3);
            z-index: -1;
        }

        .hero-text p {
            font-size: 1.2rem;
            margin-bottom: 30px;
            max-width: 600px;
        }

        .hero-text .typed-text {
            font-size: 1.5rem;
            color: var(--primary-color);
            font-weight: 600;
            display: inline-block;
            margin-bottom: 30px;
        }

        .social-icons {
            display: flex;
            margin-top: 30px;
        }

        .social-icons a {
            display: inline-flex;
            justify-content: center;
            align-items: center;
            width: 40px;
            height: 40px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            margin-right: 15px;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }

        .social-icons a:hover {
            transform: translateY(-5px);
            background: var(--secondary-color);
        }

        .scroll-down {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            flex-direction: column;
            align-items: center;
            animation: bounce 2s infinite;
        }

        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% {
                transform: translateY(0) translateX(-50%);
            }
            40% {
                transform: translateY(-20px) translateX(-50%);
            }
            60% {
                transform: translateY(-10px) translateX(-50%);
            }
        }

        .scroll-down i {
            font-size: 2rem;
            color: var(--primary-color);
        }

        .scroll-down span {
            font-size: 0.8rem;
            margin-top: 5px;
        }

        /* About Section */
        #about {
            background: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(233,236,255,0.9) 100%);
        }

        .about-content {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
        }

        .about-text {
            flex: 1;
            padding-right: 30px;
        }

        .about-text p {
            margin-bottom: 20px;
            font-size: 1.1rem;
        }

        .about-image {
            flex: 1;
            display: flex;
            justify-content: center;
        }

        .about-img-container {
            position: relative;
            width: 100%;
            max-width: 700px;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .about-img-container:hover {
            transform: scale(1.03);
        }

        .about-img {
            width: 100%;
            height: auto;
            display: block;
        }

        .about-stats {
            display: flex;
            flex-wrap: wrap;
            margin-top: 30px;
            gap: 20px;
        }

        .stat-box {
            background: var(--card-bg);
            border-radius: 8px;
            padding: 20px;
            flex: 1;
            min-width: 120px;
            box-shadow: var(--shadow);
            text-align: center;
            transition: var(--transition);
        }

        .stat-box:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
        }

        .stat-box h3 {
            font-size: 2rem;
            color: var(--primary-color);
            margin-bottom: 5px;
        }

        .stat-box p {
            font-size: 0.9rem;
            margin-bottom: 0;
        }

        /* Skills Section */
        

        #skills {
            background: white;
        }

        .skills-content {
            text-align: center;
        }

        .skills-intro {
            max-width: 700px;
            margin: 0 0 50px 0;
        }
        

        .skills-container {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            justify-content: center;
        }

        .skill-category {
            flex: 1;
            min-width: 300px;
            background: var(--card-bg);
            border-radius: 10px;
            padding: 30px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .skill-category:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }

        .skill-category h3 {
            font-size: 1.5rem;
            margin-bottom: 20px;
            color: var(--primary-color);
            position: relative;
            display: inline-block;
        }

        .skill-category h3::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 50px;
            height: 3px;
            background: var(--primary-color);
        }

        .skills-list {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            justify-content: center;
        }

        .skill-item {
            background: #f1f3f9;
            border-radius: 30px;
            padding: 10px 20px;
            font-weight: 500;
            transition: var(--transition);
            cursor: default;
        }

        .skill-item:hover {
            background: var(--primary-color);
            color: white;
            transform: scale(1.05);
        }

        .skill-icon {
            margin-right: 8px;
            font-size: 1.2em;
            vertical-align: middle;
            color: var(--primary-color);
            transition: color 0.3s;
        }
        .skill-item:hover .skill-icon {
            color: #fff;
        }

        /* Projects Section */
        #projects {
            background: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(233,236,255,0.9) 100%);
        }

        .projects-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }

        .project-card {
            background: var(--card-bg);
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .project-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }

        .project-img {
            height: 200px;
            overflow: hidden;
        }

        .project-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .project-card:hover .project-img img {
            transform: scale(1.1);
        }

        .project-content {
            padding: 25px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .project-title {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--text-color);
        }

        .project-description {
            margin-bottom: 20px;
            font-size: 1rem;
            flex-grow: 1;
        }

        .project-tags {
            display: flex;
            flex-wrap: wrap;
            margin-bottom: 20px;
            gap: 10px;
        }

        .project-tag {
            background: #f1f3f9;
            color: var(--primary-color);
            border-radius: 20px;
            padding: 5px 12px;
            font-size: 0.8rem;
            font-weight: 500;
        }

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

        .project-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 15px;
            background: var(--primary-color);
            color: white;
            border-radius: 5px;
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition);
        }

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

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

        /* Education Section */
        #education {
            background: white;
        }

        .education-timeline {
            position: relative;
            max-width: 1200px;
            margin: 50px auto 0;
        }

        .timeline-item {
            padding: 30px;
            background: var(--card-bg);
            border-radius: 10px;
            box-shadow: var(--shadow);
            margin-bottom: 30px;
            position: relative;
            transition: var(--transition);
        }

        .timeline-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            background: var(--primary-color);
            border-radius: 50%;
            left: -40px;
            top: 30px;
        }

        .education-timeline::after {
            content: '';
            position: absolute;
            width: 2px;
            height: 100%;
            background: #ddd;
            left: -30px;
            top: 0;
        }

        .timeline-date {
            color: var(--primary-color);
            font-weight: 600;
            font-size: 1.1rem;
            margin-bottom: 10px;
        }

        .timeline-degree {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .timeline-institute {
            font-size: 1.1rem;
            margin-bottom: 15px;
            color: #555;
        }

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

        .certifications {
            margin-top: 80px;
        }

        .certifications-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 30px;
        }

        .certification-card {
            background: var(--card-bg);
            border-radius: 10px;
            padding: 25px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .certification-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }

        .certification-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 15px;
        }

        .certification-title {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .certification-issuer {
            color: #555;
            margin-bottom: 15px;
            font-size: 1rem;
        }

        .certification-description {
            font-size: 0.95rem;
            margin-bottom: 15px;
        }

        /* Contact Section */
        #contact {
            background: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(233,236,255,0.9) 100%);
        }

        .contact-content {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
        }

        .contact-info {
            flex: 1;
            min-width: 560px;
        }

        .contact-form {
            flex: 1.5;
            min-width: 560px;
        }

        .contact-card {
            background: var(--card-bg);
            border-radius: 10px;
            padding: 30px;
            box-shadow: var(--shadow);
            margin-bottom: 20px;
            transition: var(--transition);
        }

        .contact-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }

        .contact-method {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
        }

        .contact-method:last-child {
            margin-bottom: 0;
        }

        .contact-icon {
            width: 50px;
            height: 50px;
            background: var(--primary-color);
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            margin-right: 20px;
            color: white;
            font-size: 1.2rem;
        }

        .contact-details h4 {
            font-size: 1.1rem;
            margin-bottom: 5px;
        }

        .contact-details p, .contact-details a {
            color: #555;
            text-decoration: none;
            transition: var(--transition);
        }

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

        .contact-form form {
            background: var(--card-bg);
            border-radius: 10px;
            padding: 30px;
            box-shadow: var(--shadow);
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
        }

        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-size: 1rem;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary-color);
            outline: none;
            box-shadow: 0 0 0 3px rgba(45, 70, 185, 0.1);
        }

        textarea.form-control {
            height: 150px;
            resize: vertical;
        }

        /* Footer */
        footer {
            background: #222;
            color: white;
            padding: 50px 0 20px;
        }

        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-section {
            flex: 1;
            min-width: 250px;
        }

        .footer-logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: white;
            margin-bottom: 20px;
        }

        .footer-logo span {
            color: var(--accent-color);
        }

        .footer-text {
            margin-bottom: 20px;
            line-height: 1.7;
        }

        .footer-social {
            display: flex;
        }

        .footer-social a {
            display: inline-flex;
            justify-content: center;
            align-items: center;
            width: 35px;
            height: 35px;
            background: #333;
            color: white;
            border-radius: 50%;
            margin-right: 10px;
            transition: var(--transition);
        }

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

        .quick-links h3 {
            font-size: 1.3rem;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .quick-links h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 2px;
            background: var(--primary-color);
        }

        .quick-links ul {
            list-style: none;
        }

        .quick-links li {
            margin-bottom: 10px;
        }

        .quick-links a {
            color: #bbb;
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
        }

        .quick-links a i {
            margin-right: 10px;
            font-size: 0.8rem;
        }

        .quick-links a:hover {
            color: white;
            transform: translateX(5px);
        }

        .footer-contact h3 {
            font-size: 1.3rem;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-contact h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 2px;
            background: var(--primary-color);
        }

        .footer-contact-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 15px;
        }

        .footer-contact-icon {
            color: var(--primary-color);
            margin-right: 15px;
            font-size: 1.2rem;
        }

        .footer-contact-text {
            color: #bbb;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #333;
        }

        /* Responsive Styles */
        @media (max-width: 992px) {
            .section-title {
                font-size: 2.2rem;
            }
            
            .hero-text h1 {
                font-size: 2.8rem;
            }
            
            .hero-text p {
                font-size: 1.1rem;
            }
            
            .hero-text .typed-text {
                font-size: 1.3rem;
            }
            
            .projects-container {
                grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            }
        }

        @media (max-width: 768px) {
            section {
                padding: 60px 0;
            }
            
            .hero-content, .about-content {
                flex-direction: column;
            }
            
            .hero-text, .about-text {
                padding-right: 0;
                text-align: center;
                margin-bottom: 40px;
            }
            
            .about-stats {
                justify-content: center;
            }
            
            .section-title {
                font-size: 2rem;
            }
            
            .hero-text h1 {
                font-size: 2.5rem;
            }
            
            .social-icons {
                justify-content: center;
            }
            
            .hero-img-container {
                width: 250px;
                height: 250px;
            }
            
            .timeline-item::before {
                left: -30px;
            }
            
            .education-timeline::after {
                left: -20px;
            }
            
            .menu-toggle {
                display: block;
            }
            
            .nav-links {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                background: var(--card-bg);
                box-shadow: var(--shadow);
                flex-direction: column;
                align-items: center;
                padding: 20px 0;
                box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
                transition: var(--transition);
            }
            
            .nav-links.active {
                left: 0;
            }
            
            .nav-links li {
                margin: 15px 0;
            }
        }

        @media (max-width: 576px) {
            .section-title {
                font-size: 1.8rem;
            }
            
            .hero-text h1 {
                font-size: 2.2rem;
            }
            
            .hero-img-container {
                width: 200px;
                height: 200px;
            }
            
            .timeline-item {
                padding: 20px;
            }
            
            .timeline-degree {
                font-size: 1.2rem;
            }
            
            .stat-box h3 {
                font-size: 1.8rem;
            }
            
            .skill-category {
                padding: 20px;
            }
        }

        /* Animations */
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.5s ease, transform 0.5s ease;
        }

        .fade-in.active {
            opacity: 1;
            transform: translateY(0);
        }

        /* Back to Top Button */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 45px;
            height: 45px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            font-size: 1.2rem;
            z-index: 99;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
        }

        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }

        .back-to-top:hover {
            background: var(--secondary-color);
            transform: translateY(-3px);
        }

        @media (max-width: 600px) {
            .contact-content {
                flex-direction: column;
                gap: 20px;
            }
            .contact-info,
            .contact-form {
                min-width: 0;
                width: 100%;
            }
            .contact-card,
            .contact-form form {
                padding: 15px;
            }
        }