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

        :root {
            --primary-color: #1e40af;
            --secondary-color: #f59e0b;
            --accent-color: #10b981;
            --dark-color: #1f2937;
            --light-color: #f8fafc;
            --text-color: #374151;
            --border-color: #e5e7eb;
        }

        body {
            font-family: 'Inter', sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            overflow-x: hidden;
        }

        /* Header & Navigation */
        .header {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 2rem;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            text-decoration: none;
            color: var(--dark-color);
        }

        .logo img {
            width: 40px;
            height: 40px;
            object-fit: contain;
        }

        .logo-text {
            font-weight: 700;
            font-size: 1.2rem;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 2rem;
        }

        .nav-menu a {
            text-decoration: none;
            color: var(--text-color);
            font-weight: 500;
            transition: color 0.3s ease;
            position: relative;
        }

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

        .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary-color);
            transition: width 0.3s ease;
        }

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

        .mobile-menu {
            display: none;
            flex-direction: column;
            cursor: pointer;
        }

        .mobile-menu span {
            width: 25px;
            height: 3px;
            background: var(--dark-color);
            margin: 3px 0;
            transition: 0.3s ease;
        }

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

        .mobile-menu.active span:nth-child(2) {
            opacity: 0;
        }

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

        /* Hero Section */
        .hero {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            padding: 120px 0 80px;
            text-align: center;
            color: white;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 100" fill="white" opacity="0.1"><polygon points="0,0 1000,100 1000,0"/></svg>');
            background-size: cover;
        }

        .hero-content {
            max-width: 800px;
            margin: 0 auto;
            padding: 0 2rem;
            position: relative;
            z-index: 1;
        }

        .hero h1 {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            animation: fadeInUp 1s ease;
        }

        .hero .subtitle {
            font-size: 1.3rem;
            margin-bottom: 2rem;
            opacity: 0.9;
            animation: fadeInUp 1s ease 0.2s both;
        }

        .cta-button {
            display: inline-block;
            background: var(--secondary-color);
            color: white;
            padding: 15px 30px;
            text-decoration: none;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s ease;
            animation: fadeInUp 1s ease 0.4s both;
        }

        .cta-button:hover {
            background: #d97706;
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(245, 158, 11, 0.3);
        }

        /* Sections */
        .section {
            padding: 80px 0;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .section-title {
            text-align: center;
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--dark-color);
        }

        .section-subtitle {
            text-align: center;
            font-size: 1.1rem;
            color: var(--text-color);
            margin-bottom: 3rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

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

        .service-card {
            background: white;
            padding: 2rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
            text-align: center;
            border: 1px solid var(--border-color);
        }

        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
        }

        .service-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            font-size: 2rem;
            color: white;
        }

        .service-card h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--dark-color);
        }

        /* About Section */
        .about {
            background: var(--light-color);
        }

        .about-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .about-text h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--dark-color);
        }

        .about-text p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            line-height: 1.8;
        }

        .stats {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2rem;
            margin-top: 2rem;
        }

        .stat {
            text-align: center;
            padding: 1.5rem;
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }

        .stat-number {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary-color);
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-color);
            margin-top: 0.5rem;
        }

        /* Projects Section */
        .projects-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }

        .project-card {
            background: white;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
        }

        .project-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
        }

        .project-image {
            height: 200px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3rem;
            color: white;
        }

        .project-content {
            padding: 1.5rem;
        }

        .project-content h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--dark-color);
        }

        /* Certificate Section */
        .certificate {
            background: var(--light-color);
            text-align: center;
        }

        .certificate-card {
            background: white;
            padding: 3rem;
            border-radius: 20px;
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
            max-width: 600px;
            margin: 0 auto;
        }

        .certificate-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--accent-color), var(--secondary-color));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            font-size: 2rem;
            color: white;
        }

        .certificate-info {
            margin: 2rem 0;
        }

        .certificate-info h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--dark-color);
        }

        .certificate-id {
            font-family: monospace;
            background: var(--light-color);
            padding: 0.5rem 1rem;
            border-radius: 5px;
            font-weight: 600;
            color: var(--primary-color);
            margin: 1rem 0;
        }

        /* certificate */

        .modal {
            display: none;
            position: fixed;
            z-index: 999;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.6);
            /* Darker for better contrast */
        }

        .pdf-modal {
            position: relative;
            margin: 2% auto;
            width: 95%;
            max-width: 960px;
            height: 95%;
            background-color: #fff;
            border-radius: 4px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
            overflow: hidden;
        }

        .pdf-modal iframe {
            width: 100%;
            height: 100%;
            border: none;
            display: block;
        }

        /* Clean and visible close button, not overlapping PDF menu */
        .close-btn {
            position: absolute;
            top: -15px;
            right: -15px;
            background: #fff;
            border: 2px solid #ccc;
            border-radius: 50%;
            width: 32px;
            height: 32px;
            text-align: center;
            line-height: 28px;
            font-size: 22px;
            font-weight: bold;
            color: #333;
            cursor: pointer;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
            z-index: 1001;
        }

        .view-btn {
            padding: 10px 20px;
            font-size: 16px;
            background-color: #007bff;
            color: white;
            border: none;
            border-radius: 6px;
            cursor: pointer;
        }

        .view-btn:hover {
            background-color: #0056b3;
        }

        .modal {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 9999;
            background: rgba(0, 0, 0, 0.7);
            justify-content: center;
            align-items: center;
        }

        .modal-content {
            position: relative;
            background: white;
            padding: 20px;
            max-width: 90%;
            max-height: 90%;
            border-radius: 6px;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .toolbar {
            margin-bottom: 10px;
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            align-items: center;
        }

        .toolbar button {
            padding: 6px 12px;
            background-color: #007bff;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
        }

        .toolbar span {
            font-size: 14px;
            color: #333;
        }

        img#imageViewer {
            max-width: 100%;
            max-height: 80vh;
            transform-origin: top left;
            transition: transform 0.2s ease;
        }

        @media (max-width: 600px) {
            .toolbar {
                font-size: 10Px;
            }

            .toolbar button {
                padding: 4px 6px;
            }

            .toolbar span {
                font-size: 10px;
                color: #333;
            }
        }



        /* Contact Section */
        .contact {
            background: var(--dark-color);
            color: white;
        }

        .contact-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .contact-info h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        .contact-info p {
            margin-bottom: 2rem;
            font-size: 1.1rem;
            opacity: 0.9;
        }

        .contact-details {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

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

        .ceo-info {
            margin: 10px 0;
            font-size: 16px;
            font-weight: bold;
        }

        .contact-icon {
            width: 40px;
            height: 40px;
            background: var(--primary-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .contact-form {
            background: rgba(255, 255, 255, 0.1);
            padding: 2rem;
            border-radius: 15px;
            backdrop-filter: blur(10px);
        }

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

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

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.1);
            color: white;
            font-family: inherit;
        }

        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: rgba(255, 255, 255, 0.7);
        }

        .submit-btn {
            width: 100%;
            background: var(--secondary-color);
            color: white;
            padding: 15px;
            border: none;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .submit-btn:hover {
            background: #d97706;
        }

        .submit-btn:disabled {
            background: #6b7280;
            cursor: not-allowed;
        }

        /* Footer */
        .footer {
            background: #111827;
            color: white;
            padding: 3rem 0 2rem;
            text-align: center;
        }

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

        .footer-section h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }

        .footer-section p,
        .footer-section a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            transition: color 0.3s ease;
            margin-bottom: 0.5rem;
        }

        .footer-section a:hover {
            color: var(--secondary-color);
        }

        .social-links {
            display: flex;
            justify-content: center;
            gap: 1rem;
            margin-top: 1rem;
        }

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

        .social-link:hover {
            background: var(--secondary-color);
            transform: translateY(-2px);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 2rem;
            opacity: 0.8;
        }

        /* Animations */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Smooth scrolling */
        html {
            scroll-behavior: smooth;
        }

        /* Loading animation */
        .loading {
            opacity: 0;
            animation: fadeInUp 0.6s ease forwards;
        }

        .loading:nth-child(1) {
            animation-delay: 0.1s;
        }

        .loading:nth-child(2) {
            animation-delay: 0.2s;
        }

        .loading:nth-child(3) {
            animation-delay: 0.3s;
        }

        .loading:nth-child(4) {
            animation-delay: 0.4s;
        }

        .loading:nth-child(5) {
            animation-delay: 0.5s;
        }

        .loading:nth-child(6) {
            animation-delay: 0.6s;
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .mobile-menu {
                display: flex;
            }

            .nav-menu {
                display: none;
            }

            .nav-menu.mobile-active {
                display: flex;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: white;
                flex-direction: column;
                padding: 1rem 2rem;
                box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            }

            .hero h1 {
                font-size: 2.5rem;
            }

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

            .about-content,
            .contact-content {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

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

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

        @media (max-width: 480px) {
            .nav-container {
                padding: 1rem;
            }

            .hero {
                padding: 100px 0 60px;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .section {
                padding: 60px 0;
            }

            .container {
                padding: 0 1rem;
            }
        }

        /* Scroll to top button */
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--primary-color);
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            opacity: 0;
            visibility: hidden;
            z-index: 1000;
        }

        .scroll-top.visible {
            opacity: 1;
            visibility: visible;
        }

        .scroll-top:hover {
            background: var(--secondary-color);
            transform: translateY(-2px);
        }

        /* Success message */
        .success-message {
            background: var(--accent-color);
            color: white;
            padding: 1rem;
            border-radius: 8px;
            margin-top: 1rem;
            display: none;
        }

        .success-message.show {
            display: block;
            animation: fadeInUp 0.5s ease;
        }