:root {
            --primary: #2c3e50;
            --secondary: #3498db;
            --accent: #1abc9c;
            --light: #ecf0f1;
            --dark: #2c3e50;
            --gray: #95a5a6;
            --success: #2ecc71;
            --warning: #f39c12;
            --danger: #e74c3c;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background-color: #f9f9f9;
            color: #333;
            line-height: 1.6;
        }

        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }

        /* Header & Navigation */
        header {
            background-color: var(--primary);
            color: white;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

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

        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: white;
            text-decoration: none;
        }

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

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

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

        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }

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

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

        /* Hero Section */
        .hero {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: white;
            padding: 150px 0 100px;
            text-align: center;
        }

        .hero-content h1 {
            font-size: 3rem;
            margin-bottom: 20px;
        }

        .hero-content p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto 30px;
        }

        .btn {
            display: inline-block;
            background-color: var(--accent);
            color: white;
            padding: 12px 30px;
            border-radius: 5px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
            border: none;
            cursor: pointer;
        }

        .btn:hover {
            background-color: #16a085;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }

        .btn-outline {
            background-color: transparent;
            border: 2px solid white;
            margin-left: 15px;
        }

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

        /* About Section */
        .section {
            padding: 100px 0;
        }

        .section-title {
            text-align: center;
            margin-bottom: 60px;
        }

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

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

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

        .about-img {
            flex: 1;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }

        .about-img img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform 0.5s;
        }

        .about-img:hover img {
            transform: scale(1.05);
        }

        .about-text {
            flex: 1;
        }

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

        .about-text p {
            margin-bottom: 20px;
            color: var(--gray);
        }

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

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

        .skill-category {
            background-color: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s;
        }

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

        .skill-category h3 {
            font-size: 1.5rem;
            margin-bottom: 20px;
            color: var(--primary);
            display: flex;
            align-items: center;
        }

        .skill-category h3 i {
            margin-right: 10px;
            color: var(--accent);
        }

        .skill-list {
            list-style: none;
        }

        .skill-list li {
            margin-bottom: 15px;
            display: flex;
            align-items: center;
        }

        .skill-list li i {
            color: var(--success);
            margin-right: 10px;
        }

        /* Projects Section */
        .projects-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 30px;
        }

        .project-card {
            background-color: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s;
        }

        .project-card:hover {
            transform: translateY(-10px);
        }

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

        .project-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }

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

        .project-content {
            padding: 25px;
        }

        .project-content h3 {
            font-size: 1.4rem;
            margin-bottom: 10px;
            color: var(--primary);
        }

        .project-content p {
            color: var(--gray);
            margin-bottom: 20px;
        }

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

        .project-tag {
            background-color: var(--light);
            color: var(--primary);
            padding: 5px 10px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
        }

        /* Experience Section */
        .experience {
            background-color: var(--light);
        }

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

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

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

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

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

        .timeline-content {
            padding: 20px;
            background-color: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }

        .timeline-content h3 {
            font-size: 1.3rem;
            margin-bottom: 5px;
            color: var(--primary);
        }

        .timeline-content h4 {
            font-size: 1rem;
            color: var(--secondary);
            margin-bottom: 10px;
        }

        .timeline-content p {
            color: var(--gray);
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            background-color: white;
            border: 3px solid var(--accent);
            border-radius: 50%;
            top: 20px;
            right: -10px;
            z-index: 1;
        }

        .timeline-item:nth-child(even)::after {
            left: -10px;
        }

        /* Contact Section */
        .contact-container {
            display: flex;
            gap: 50px;
        }

        .contact-info {
            flex: 1;
        }

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

        .contact-icon {
            width: 50px;
            height: 50px;
            background-color: var(--accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 15px;
            color: white;
            font-size: 1.2rem;
        }

        .contact-text h3 {
            font-size: 1.2rem;
            margin-bottom: 5px;
            color: var(--primary);
        }

        .contact-form {
            flex: 1;
        }

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

        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-size: 1rem;
            transition: border 0.3s;
        }

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

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

        /* Footer */
        footer {
            background-color: var(--primary);
            color: white;
            padding: 50px 0 20px;
        }

        .footer-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
        }

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

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

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

        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
        }

        /* Responsive Design */
        @media (max-width: 992px) {
            .about-content {
                flex-direction: column;
            }
            
            .contact-container {
                flex-direction: column;
            }
            
            .timeline::after {
                left: 31px;
            }
            
            .timeline-item {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
            }
            
            .timeline-item:nth-child(even) {
                left: 0;
            }
            
            .timeline-item::after {
                left: 21px;
            }
            
            .timeline-item:nth-child(even)::after {
                left: 21px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: var(--primary);
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
            }
            
            .nav-links.active {
                display: flex;
            }
            
            .nav-links li {
                margin: 10px 0;
            }
            
            .mobile-menu {
                display: block;
            }
            
            .hero-content h1 {
                font-size: 2.2rem;
            }
            
            .section-title h2 {
                font-size: 2rem;
            }
        }