:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --secondary: #f59e0b;
            --dark: #1e293b;
            --darker: #0f172a;
            --light: #f8fafc;
            --gray: #94a3b8;
            --dark-gray: #475569;
            --success: #10b981;
            --danger: #ef4444;
            --warning: #f59e0b;
            --info: #3b82f6;
            --transition: all 0.3s ease;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
            --radius-sm: 0.25rem;
            --radius: 0.5rem;
            --radius-lg: 0.75rem;
            --radius-xl: 1rem;
        }

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

        html {
            scroll-behavior: smooth;
        }

       body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--darker);
    color: var(--light);
    line-height: 1.6;
    overflow-x: hidden;
}


        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 1rem;
        }

        p {
            margin-bottom: 1rem;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        ul {
            list-style: none;
        }

        img {
            max-width: 100%;
            height: auto;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        .section {
            padding: 6rem 0;
        }

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

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 0;
            width: 70%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: var(--radius);
        }

        .btn {
            display: inline-block;
            padding: 0.8rem 1.8rem;
            border-radius: var(--radius);
            font-weight: 500;
            text-align: center;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            font-family: inherit;
            font-size: 1rem;
        }

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

        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

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

        .btn-secondary:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

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

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

        /* Header */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            padding: 1.5rem 0;
            transition: var(--transition);
            background-color: rgba(31, 33, 56, 0.95);
            box-shadow: var(--shadow-sm);
        }

  

        header.scrolled {
            padding: 1rem 0;
            box-shadow: var(--shadow);
        }

        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

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

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

        .nav-links {
            display: flex;
            gap: 2rem;
        }

        .nav-links a {
            font-weight: 500;
            position: relative;
            padding: 0.5rem 0;
        }

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

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




        .hamburger {
            display: none;
            cursor: pointer;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--dark);
        }

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

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 100%;
            height: 200%;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, rgba(0, 0, 0, 0) 70%);
            z-index: -1;
        }

        .hero-content {
            display: flex;
            align-items: center;
            gap: 3rem;
        }

        .hero-text {
            flex: 1;
        }

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

        .hero-image img {
            max-width: 350px;
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
            border: 5px solid var(--primary);
        }

        .hero-title {
            font-size: 3rem;
            margin-bottom: 1.5rem;
            line-height: 1.1;
        }

        .hero-subtitle {
            font-size: 1.25rem;
            color: var(--gray);
            margin-bottom: 2rem;
        }



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

        .hero-highlight::after {
            content: '';
            position: absolute;
            bottom: 5px;
            left: 0;
            width: 100%;
            height: 10px;
            background-color: rgba(245, 158, 11, 0.3);
            z-index: -1;
        }

        .hero-cta {
            display: flex;
            gap: 1rem;
            margin-top: 2rem;
            margin-bottom: 2rem;
        }

        .social-links {
            display: flex;
            gap: 1rem;
            margin-top: 0.5rem;

        }

        .social-link {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: var(--light);
            color: var(--dark);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        /* Skills Section */
        .skills-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        .skills-category {
            background-color: var(--dark);
    color: var(--light);
            padding: 2rem;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .skills-category:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }


        .skills-title {
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .skills-list {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .skill-item {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            background-color: rgba(37, 99, 235, 0.1);
            padding: 0.5rem 1rem;
            border-radius: var(--radius);
            font-size: 0.9rem;
        }

   

        .skill-icon {
            font-size: 1.2rem;
        }

        /* Projects Section */
        .projects {
            background-color: rgba(0, 0, 0, 0);
        }

    

        .projects-filter {
            display: flex;
            gap: 1rem;
            margin-bottom: 2rem;
            flex-wrap: wrap;
        }

        .filter-btn {
            padding: 0.5rem 1.5rem;
            border-radius: var(--radius);
            background-color: rgb(255, 250, 250);
            border: 1px solid var(--gray);
            cursor: pointer;
            transition: var(--transition);
        }

        .filter-btn.active, .filter-btn:hover {
            background-color: var(--primary);
            color: rgb(0, 0, 0);
            border-color: var(--primary);
        }

   

        .projects-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 2rem;
        }

        .project-card {
            background-color: rgb(21, 43, 88);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

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

        body.dark-mode .project-card {
            background-color: var(--dark);
        }

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

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

        .project-card:hover .project-image img {
            transform: scale(1.05);
        }

        .project-content {
            padding: 1.5rem;
        }

        .project-title {
            font-size: 1.25rem;
            margin-bottom: 0.5rem;
        }

        .project-description {
            color: var(--gray);
            margin-bottom: 1rem;
            font-size: 0.9rem;
        }

        .project-tech {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-bottom: 1.5rem;
        }

        .tech-item {
            background-color: rgba(245, 158, 11, 0.1);
            color: var(--secondary);
            padding: 0.25rem 0.75rem;
            border-radius: var(--radius);
            font-size: 0.75rem;
            font-weight: 500;
        }

        .project-links {
            display: flex;
            gap: 1rem;
        }

        /* Certificates Section */
.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.certificate-card {
    background-color: var(--dark);
    color: var(--light);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    text-align: center;
}

.certificate-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.certificate-title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--primary);
}

.certificate-description {
    font-size: 0.9rem;
    color: var(--gray);
    margin-bottom: 1rem;
}

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

        .timeline::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 2px;
            height: 100%;
            background-color: var(--gray);
        }

        .timeline-item {
            position: relative;
            margin-bottom: 3rem;
        }

        .timeline-item:nth-child(odd) {
            padding-right: calc(50% + 2rem);
            text-align: right;
        }

        .timeline-item:nth-child(even) {
            padding-left: calc(50% + 2rem);
        }

        .timeline-dot {
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background-color: var(--primary);
            border: 4px solid var(--light);
            z-index: 1;
        }


        .timeline-content {
           background-color: var(--dark);
    color: var(--light);
            padding: 1.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            position: relative;
        }

 

        .timeline-date {
            color: var(--gray);
            font-weight: 500;
            margin-bottom: 0.5rem;
        }

        .timeline-title {
            font-size: 1.25rem;
            margin-bottom: 0.5rem;
        }

        .timeline-company {
            color: var(--gray);
            margin-bottom: 0.5rem;
            font-size: 0.9rem;
        }

        .timeline-description {
            font-size: 0.9rem;
        }

        /* Contact Section */
        .contact-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 3rem;
        }

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

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

        .contact-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: rgba(37, 99, 235, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.25rem;
        }

   

        .contact-text h3 {
            font-size: 1.1rem;
            margin-bottom: 0.25rem;
        }

        .contact-text p {
            color: var(--gray);
            font-size: 0.9rem;
        }

        .contact-form {
            background-color: var(--dark);
    color: var(--light);
            padding: 2rem;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
        }

  

        .form-group {
            margin-bottom: 1.5rem;
        }

        .form-label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 500;
        }

        .form-control {
            width: 100%;
            padding: 0.75rem 1rem;
            border: 1px solid var(--gray);
            border-radius: var(--radius);
            font-family: inherit;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
        }

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

        
        /* Back to Top Button */
        .back-to-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--primary);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            box-shadow: var(--shadow);
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            z-index: 999;
        }

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

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

        /* Animations */
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .fade-in {
            animation: fadeIn 0.6s ease forwards;
        }

        /* Responsive Design */
        @media (max-width: 992px) {
            .hero-content {
                flex-direction: column-reverse;
                text-align: center;
            }

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

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

         
            .timeline::before {
                left: 2rem;
            }

            .timeline-item:nth-child(odd),
            .timeline-item:nth-child(even) {
                padding-left: 5rem;
                padding-right: 0;
                text-align: left;
            }

            .timeline-dot {
                left: 2rem;
            }
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 2rem;
            }

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

            .nav-links {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 80px);
                background-color: var(--light);
                flex-direction: column;
                align-items: center;
                padding: 2rem 0;
                gap: 2rem;
                transition: var(--transition);
                z-index: 999;
            }

     

            .nav-links.active {
                left: 0;
            }

            .hamburger {
                display: block;
            }

          
        }

        @media (max-width: 576px) {
            .section {
                padding: 4rem 0;
            }

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

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

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

            .footer-links {
                flex-direction: column;
                gap: 1rem;
            }
        }