/* Variables */
        :root {
            --primary-color: #2980b9;
            --secondary-color: #3498db;
            --accent-color: #1abc9c;
            --dark-color: #2c3e50;
            --light-color: #ecf0f1;
            --text-color: #333;
            --light-text: #f5f5f5;
            --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: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            color: var(--text-color);
            background-color: var(--light-color);
            line-height: 1.6;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

        ul {
            list-style: none;
        }

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

        .btn {
            display: inline-block;
            padding: 12px 25px;
            background-color: var(--primary-color);
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            transition: var(--transition);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            box-shadow: var(--shadow);
        }

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

        .section-title {
            text-align: center;
            margin-bottom: 50px;
            position: relative;
        }

        .section-title h2 {
            font-size: 2.5rem;
            color: var(--dark-color);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 70px;
            height: 3px;
            background-color: var(--accent-color);
        }

        section {
            padding: 80px 0;
        }

        header {
            background-color: var(--primary-color);
            color: white;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        header.sticky {
            padding: 10px 0;
            background-color: rgba(41, 128, 185, 0.95);
        }

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

        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            letter-spacing: 1px;
        }

        .nav-links {
            display: flex;
        }

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

        .nav-links a {
            position: relative;
            font-weight: 500;
            transition: var(--transition);
        }

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

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

        .hamburger {
            display: none;
            cursor: pointer;
        }

        .hamburger div {
            width: 25px;
            height: 3px;
            background-color: white;
            margin: 5px;
            transition: var(--transition);
        }

        /* Hero Section */
        #home {
            height: 100vh;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
        }

        .home-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .home-text {
            flex: 1;
            animation: fadeInLeft 1s ease;
        }

        .home-text h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            line-height: 1.2;
        }

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

        .home-image {
            flex: 1;
            text-align: center;
            animation: fadeInRight 1s ease;
        }

        .profile-img {
            width: 300px;
            height: 300px;
            border-radius: 50%;
            object-fit: cover;
            border: 5px solid white;
            box-shadow: var(--shadow);
        }

        .hero-scroll {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            animation: bounce 2s infinite;
        }

        .hero-scroll i {
            font-size: 2rem;
            color: white;
        }

        /* About Section */
        #about {
            background-color: white;
        }

        .about-content {
            display: flex;
            gap: 50px;
        }

        .about-image {
            flex: 1;
            text-align: center;
        }

        .about-image img {
            max-width: 100%;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }

        .about-text {
            flex: 1;
        }

        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--dark-color);
        }

        .personal-info {
            margin-top: 30px;
        }

        .info-item {
            display: flex;
            margin-bottom: 15px;
        }

        .info-title {
            min-width: 120px;
            font-weight: 600;
        }

        /* Skills Section */
        #skills {
            background-color: var(--light-color);
        }

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

        .skill-box {
            background-color: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .skill-box:hover {
            transform: translateY(-10px);
        }

        .skill-box h3 {
            font-size: 1.5rem;
            margin-bottom: 20px;
            color: var(--dark-color);
            text-align: center;
        }

        .skill-item {
            margin-bottom: 20px;
        }

        .skill-info {
            display: flex;
            justify-content: space-between;
            margin-bottom: 10px;
        }

        .skill-bar {
            height: 10px;
            background-color: #e0e0e0;
            border-radius: 5px;
            overflow: hidden;
        }

        .skill-progress {
            height: 100%;
            background-color: var(--accent-color);
            border-radius: 5px;
            transition: width 1s ease;
            width: 0;
        }

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

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

        .timeline::after {
            content: '';
            position: absolute;
            width: 3px;
            background-color: var(--primary-color);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -1.5px;
        }

        .timeline-item {
            padding: 10px 40px;
            position: relative;
            width: 50%;
            box-sizing: border-box;
            animation: fadeIn 1s ease;
        }

        .timeline-item:nth-child(odd) {
            left: 0;
        }

        .timeline-item:nth-child(even) {
            left: 50%;
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            background-color: white;
            border: 4px solid var(--primary-color);
            border-radius: 50%;
            top: 15px;
            z-index: 1;
        }

        .timeline-item:nth-child(odd)::after {
            right: -12px;
        }

        .timeline-item:nth-child(even)::after {
            left: -12px;
        }

        .timeline-content {
            padding: 20px;
            background-color: white;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }

        .timeline-content h3 {
            font-size: 1.5rem;
            margin-bottom: 10px;
            color: var(--dark-color);
        }

        .timeline-content .date {
            font-weight: 600;
            color: var(--primary-color);
            margin-bottom: 15px;
            display: block;
        }

        /* Languages Section */
        #languages {
            background-color: var(--light-color);
        }

        .languages-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 30px;
        }

        .language-item {
            background-color: white;
            padding: 20px;
            border-radius: 10px;
            box-shadow: var(--shadow);
            text-align: center;
            transition: var(--transition);
        }

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

        .language-item h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: var(--dark-color);
        }

        .language-level {
            display: flex;
            justify-content: center;
            gap: 5px;
        }

        .level-dot {
            width: 15px;
            height: 15px;
            border-radius: 50%;
            background-color: #e0e0e0;
            transition: background-color 0.5s ease;
        }

        .level-dot.active {
            background-color: var(--accent-color);
        }

        /* Certificates Section */
        #certificates {
            background-color: white;
        }

        .certificates-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 30px;
        }

        .certificate-item {
            background-color: var(--light-color);
            padding: 25px;
            border-radius: 10px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

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

        .certificate-item h3 {
            font-size: 1.3rem;
            margin-bottom: 10px;
            color: var(--dark-color);
        }

        .certificate-item .date {
            font-weight: 600;
            color: var(--primary-color);
            margin-bottom: 15px;
            display: block;
        }

        .certificate-item p {
            margin-bottom: 0;
        }

        /* Hobbies Section */
        #hobbies {
            background-color: var(--light-color);
        }

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

        .hobby-item {
            background-color: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: var(--shadow);
            text-align: center;
            width: 200px;
            transition: var(--transition);
        }

        .hobby-item:hover {
            transform: translateY(-10px);
            background-color: var(--primary-color);
            color: white;
        }

        .hobby-item i {
            font-size: 3rem;
            margin-bottom: 20px;
            color: var(--accent-color);
            transition: var(--transition);
        }

        .hobby-item:hover i {
            color: white;
        }

        .hobby-item h3 {
            font-size: 1.3rem;
        }

        /* Contact Section */
        #contact {
            background-color: white;
        }

        .contact-container {
            display: flex;
            gap: 50px;
        }

        .contact-info {
            flex: 1;
        }

        .contact-info h3 {
            font-size: 1.8rem;
            margin-bottom: 30px;
            color: var(--dark-color);
        }

        .contact-item {
            display: flex;
            align-items: center;
            margin-bottom: 25px;
        }

        .contact-item i {
            font-size: 1.5rem;
            color: var(--primary-color);
            margin-right: 15px;
            width: 40px;
            height: 40px;
            background-color: var(--light-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .contact-form {
            flex: 1;
        }

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

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

        .form-control:focus {
            border-color: var(--primary-color);
            outline: none;
        }

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

        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 30px 0;
            text-align: center;
        }

        .footer-content {
            margin-bottom: 20px;
        }

        .social-links {
            display: flex;
            justify-content: center;
            margin-bottom: 20px;
            gap: 15px;
        }

        .social-links a {
            width: 40px;
            height: 40px;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

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

        .social-links i {
            font-size: 1.2rem;
        }

        .download-cv {
            margin-bottom: 20px;
        }

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

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

        @keyframes fadeIn {
            from {
                opacity: 0;
            }
            to {
                opacity: 1;
            }
        }

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

        /* Responsive Styles */
        @media screen and (max-width: 992px) {
            .home-content {
                flex-direction: column;
                text-align: center;
            }

            .home-text {
                margin-bottom: 50px;
            }

            .about-content {
                flex-direction: column;
            }

            .contact-container {
                flex-direction: column;
            }

            .timeline-item {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
            }

            .timeline-item:nth-child(even) {
                left: 0;
            }

            .timeline::after {
                left: 31px;
            }

            .timeline-item::after {
                left: 20px;
            }

            .timeline-item:nth-child(odd)::after {
                right: auto;
                left: 20px;
            }
        }

        @media screen and (max-width: 768px) {
            .nav-links {
                position: absolute;
                right: 0;
                top: 70px;
                background-color: var(--primary-color);
                flex-direction: column;
                width: 100%;
                text-align: center;
                transform: translateY(-150%);
                transition: transform 0.5s ease;
                z-index: 1;
            }

            .nav-links.active {
                transform: translateY(0);
            }

            .nav-links li {
                margin: 0;
                padding: 15px;
            }

            .hamburger {
                display: block;
            }

            .hamburger.active div:nth-child(1) {
                transform: rotate(-45deg) translate(-5px, 6px);
            }

            .hamburger.active div:nth-child(2) {
                opacity: 0;
            }

            .hamburger.active div:nth-child(3) {
                transform: rotate(45deg) translate(-5px, -6px);
            }

            .home-text h1 {
                font-size: 2.5rem;
            }

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