:root {
            /* Light Mode Colors */
            --color-white: rgba(255, 255, 255, 1);
            --color-cream-50: rgba(252, 252, 249, 1);
            --color-cream-100: rgba(255, 255, 253, 1);
            --color-gray-200: rgba(245, 245, 245, 1);
            --color-gray-300: rgba(167, 169, 169, 1);
            --color-slate-500: rgba(98, 108, 113, 1);
            --color-slate-900: rgba(19, 52, 59, 1);
            --color-charcoal-700: rgba(31, 33, 33, 1);
            --color-charcoal-800: rgba(38, 40, 40, 1);
            --color-primary: #4169E1;
            --color-primary-hover: #3154C9;
            --color-primary-active: #2447B1;
            --color-purple-500: rgba(168, 85, 247, 1);
            --color-purple-600: rgba(147, 51, 234, 1);
            --color-background: var(--color-cream-50);
            --color-surface: var(--color-cream-100);
            --color-text: var(--color-slate-900);
            --color-text-secondary: var(--color-slate-500);
            --color-navy: #1a1f3a;
            --color-navy-dark: #0f1629;
            --color-border: rgba(94, 82, 64, 0.2);
            --color-card-bg: white;
            
            --font-family-base: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
            --radius-base: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
        }

        /* AI Mode (Dark Mode) */
        [data-theme="ai"] {
            --color-background: #0f1629;
            --color-surface: rgba(30, 41, 59, 0.95);
            --color-text: var(--color-gray-200);
            --color-text-secondary: rgba(167, 169, 169, 0.7);
            --color-primary: var(--color-purple-500);
            --color-primary-hover: var(--color-purple-600);
            --color-border: rgba(168, 85, 247, 0.3);
            --color-card-bg: rgba(30, 41, 59, 0.8);
            --color-navy: #1e293b;
            --color-navy-dark: #0f172a;
            --shadow-sm: 0 1px 3px rgba(168, 85, 247, 0.1);
            --shadow-md: 0 4px 6px -1px rgba(168, 85, 247, 0.15);
            --shadow-lg: 0 10px 25px rgba(168, 85, 247, 0.2);
        }

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

        body {
            font-family: var(--font-family-base);
            line-height: 1.6;
            color: var(--color-text);
            background-color: var(--color-background);
            transition: all 0.3s ease;
        }

        [data-theme="ai"] body {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
        }

        /* Theme Toggle */
        .theme-toggle {
            width: 50px;
            height: 40px;
            background: #5070cf;
            color: white;
            border-radius: 8px;
            position: relative;
            cursor: pointer;
            border: 1px solid #4169E1;
            transition: all 0.3s;
            margin-left: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            letter-spacing: 0.5px;
        }

        .theme-toggle:hover {
            background: #4169E1;
            transform: scale(1.05);
            
        }

        [data-theme="ai"] .theme-toggle {
            background: rgba(168, 85, 247, 0.3);
            border-color: rgba(168, 85, 247, 0.5);
        }

        [data-theme="ai"] .theme-toggle:hover {
            background: rgba(168, 85, 247, 0.5);
            box-shadow: 0 0 20px rgba(168, 85, 247, 0.6);
        }

        /* Navigation */
        .navbar {
            background-color: var(--color-card-bg);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: all 0.3s ease;
        }

        [data-theme="ai"] .navbar {
            background: rgba(30, 41, 59, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(168, 85, 247, 0.2);
        }

        .navbar-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 15px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 2px;
            font-size: 25px;
            font-weight: 600;
            color: var(--color-text);
            text-decoration: none;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;

        }
        .logo img {
    width: 220px;       
    height: auto;        
    object-fit: contain;
    display: block;
    transition: 0.3s ease;
}

.logo img:hover {
    transform: scale(1.03);
    filter: drop-shadow(0 0 12px rgba(0, 132, 255, 0.7));
}
[data-theme="ai"] .logo img:hover {
    transform: scale(1.03);
    filter: drop-shadow(0 0 12px rgba(168, 85, 247, 0.6));
    box-shadow: none !important;
}



        .nav-menu {
            display: flex;
            gap: 30px;
            list-style: none;
            align-items: center;
            padding-left: 100px;
        }

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

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

        .btn-primary {
            background: var(--color-primary);
            color: white;
            padding: 10px 24px;
            border-radius: var(--radius-base);
            border: none;
            cursor: pointer;
            font-weight: 500;
            transition: all 0.3s;
        }

        .btn-primary:hover {
            background: var(--color-primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(65, 105, 225, 0.3);
        }

        [data-theme="ai"] .btn-primary:hover {
            box-shadow: 0 0 25px rgba(168, 85, 247, 0.6);
        }

        /* Hero Section */
        .hero {
            background: linear-gradient(135deg, var(--color-navy-dark) 0%, var(--color-navy) 100%);
            color: white;
            padding: 80px 20px;
            position: relative;
            overflow: hidden;
        }

        [data-theme="ai"] .hero {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 50%;
            height: 100%;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="rgba(255,255,255,0.05)"/></svg>');
            opacity: 0.1;
        }

        .hero-content {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            gap: 60px;
            position: relative;
            z-index: 1;
        }

        .hero-text {
            flex: 1;
        }

        .hero-text h1 {
            font-size: 48px;
            margin-bottom: 20px;
            line-height: 1.2;
        }

        [data-theme="ai"] .hero-text h1 {
            background: linear-gradient(90deg, #ffffff, #a855f7, #ec4899);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            animation: glow 3s ease-in-out infinite;
        }

        @keyframes glow {
            0%, 100% { filter: brightness(1); }
            50% { filter: brightness(1.3); }
        }

        .hero-text p {
            font-size: 18px;
            margin-bottom: 30px;
            opacity: 0.9;
        }

        .hero-buttons {
            display: flex;
            gap: 15px;
        }

        .btn-secondary {
            background: transparent;
            color: white;
            padding: 10px 24px;
            border-radius: var(--radius-base);
            border: 2px solid white;
            cursor: pointer;
            font-weight: 500;
            transition: all 0.3s;
        }

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

        .hero-image {
            flex: 1;
            position: relative;
        }

        .hero-image img {
            width: 100%;
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
        }

        [data-theme="ai"] .hero-image img {
            box-shadow: 0 20px 60px rgba(168, 85, 247, 0.4);
            animation: float 6s ease-in-out infinite;
        }

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

        /* Features Section */
        .features {
            padding: 50px 20px;
            background: var(--color-background);
        }

        .features-content {
            max-width: 1200px;
            margin: 0 auto;
        }

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

        .section-title h2 {
            font-size: 36px;
            margin-bottom: 15px;
            color: var(--color-text);
        }

        .section-title p {
            font-size: 18px;
            color: var(--color-text-secondary);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .feature-card {
            background: var(--color-card-bg);
            padding: 30px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            transition: all 0.3s;
            border: 1px solid var(--color-border);
        }

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

        [data-theme="ai"] .feature-card:hover {
            box-shadow: 0 10px 40px rgba(168, 85, 247, 0.3);
            border-color: rgba(168, 85, 247, 0.5);
        }

        .feature-icon {
            width: 60px;
            height: 60px;
            background: var(--color-primary);
            border-radius: var(--radius-base);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: white;
            margin-bottom: 20px;
        }

        [data-theme="ai"] .feature-icon {
            box-shadow: 0 0 20px rgba(168, 85, 247, 0.5);
        }

        .feature-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
            color: var(--color-text);
        }

        .feature-card p {
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* Services Section */
        .services {
            padding: 50px 20px;
            background: var(--color-surface);
        }

        [data-theme="ai"] .services {
            background: rgba(30, 41, 59, 0.5);
        }

        .services-content {
            max-width: 1200px;
            margin: 0 auto;
        }

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

        .service-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: all 0.3s;
        }

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

        .service-image {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .service-content {
            padding: 25px;
        }

        .service-content h3 {
            font-size: 22px;
            margin-bottom: 12px;
            color: var(--color-text);
        }

        .service-content p {
            color: var(--color-text-secondary);
            margin-bottom: 15px;
        }

        .learn-more {
            color: var(--color-primary);
            text-decoration: none;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .learn-more:hover {
            gap: 10px;
        }

        /* Projects Section */
        .projects {
            padding: 50px 20px;
            background: var(--color-background);
        }

        .projects-content {
            max-width: 1200px;
            margin: 0 auto;
        }

        .projects-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .project-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: all 0.3s;
        }

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

        .project-image {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }

        .project-content {
            padding: 25px;
        }

        .project-content h3 {
            font-size: 20px;
            margin-bottom: 10px;
            color: var(--color-text);
        }

        .project-content p {
            color: var(--color-text-secondary);
            font-size: 14px;
        }

         /* Footer */
        .footer {
            background: var(--color-navy-dark);
            color: white;
            padding: 60px 20px 20px;
        }

        [data-theme="ai"] .footer {
            background: linear-gradient(180deg, rgba(15, 23, 42, 0.95), rgba(15, 23, 42, 1));
            border-top: 1px solid rgba(168, 85, 247, 0.2);
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-section h3 {
            margin-bottom: 20px;
            font-size: 18px;
        }

        .footer-section p,
        .footer-section a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            display: block;
            margin-bottom: 10px;
            transition: color 0.3s;
        }

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

        [data-theme="ai"] .footer-section a:hover {
            color: var(--color-purple-500);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.7);
        }

        /* Social Links in Footer */
        .social-links {
            display: flex;
            gap: 12px;
            align-items: center;
            margin-top: 20px;
        }

        .social-links a {
            color: white;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.1);
            transition: all 0.3s;
            text-decoration: none;
        }

        .social-links a:hover {
            background-color: var(--color-primary);
            transform: scale(1.1);
        }

        [data-theme="ai"] .social-links a:hover {
            box-shadow: 0 0 15px rgba(168, 85, 247, 0.6);
        }


        /* Responsive */
        @media (max-width: 768px) {
            .hero-content {
                flex-direction: column;
                text-align: center;
            }
            .logo img { 
                padding-left: 80px; 
                width: 250px;    
            }
            .hero-text h1 {
                font-size: 32px;
            }

            .nav-menu {
                display: none;
            }

            .contact-info {
                flex-direction: column;
                gap: 10px;
            }

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

            .section-title h2 {
                font-size: 28px;
            }

            .stat-item h3 {
                font-size: 36px;
            }

            .chatbot-card {
                width: 90% !important;
                right: 5% !important;
            }
        }