:root {
  --background: #0b0f19; /* deep space black-blue */
  --foreground: #e0e6ff; /* soft starlight white */
  --card: #141a2b; /* darker panel background */
  --card-foreground: #e4e6f7;

  --primary: #7f5af0; /* nebula violet */
  --primary-foreground: #ffffff;

  --secondary: #00c6ff; /* cosmic cyan */
  --accent: #ff6ec7; /* pink nebula highlight */

  --muted: #1c2238; /* dim starfield background */
  --muted-foreground: #8892b0;

  --border: rgba(255, 255, 255, 0.08);
  --radius: 0.85rem;

  --shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.6);

  /* Galaxy gradients */
  --gradient-primary: linear-gradient(135deg, #7f5af0 0%, #00c6ff 100%);
  --gradient-secondary: linear-gradient(135deg, #ff6ec7 0%, #7f5af0 50%, #00c6ff 100%);
}

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--background);
            color: var(--foreground);
            line-height: 1.6;
            overflow-x: hidden;
            transition: all 0.3s ease;
        }

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

        /* Navigation */
        .nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: all 0.3s ease;
            box-shadow: var(--shadow);
        }


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

        @media (max-width: 768px) {
            .nav-container {
                padding: 0.75rem 1rem;
                gap: 1rem;
            }
        }

        @media (max-width: 480px) {
            .nav-container {
                padding: 0.5rem 0.75rem;
                gap: 0.75rem;
            }
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--foreground);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.75rem;
            transition: all 0.3s ease;
        }

        .logo:hover {
            transform: scale(1.05);
        }

        .logo-icon {
            width: 3.5rem;
            height: 3.5rem;
            background: transparent;
            border-radius: 0.75rem;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--foreground);
            font-size: 1.75rem;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .logo-icon::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
            transition: left 0.5s ease;
        }

        .logo:hover .logo-icon::before {
            left: 100%;
        }

        .logo-icon img {
            width: 2.5rem;
            height: 2.5rem;
            object-fit: contain;
        }

        .nav-links {
            display: flex;
            gap: 2.5rem;
            list-style: none;
            align-items: center;
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: fixed;
                top: 70px;
                left: 1rem;
                right: 1rem;
                background: var(--background);
                border: 1px solid var(--border);
                border-radius: 1rem;
                flex-direction: column;
                padding: 1.5rem;
                gap: 0.5rem;
                box-shadow: var(--shadow-lg);
                z-index: 999;
                max-width: calc(100vw - 2rem);
            }

            .nav-links.mobile-active {
                display: flex;
            }
        }

        .nav-links a {
            text-decoration: none;
            color: var(--foreground);
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
            padding: 0.5rem 0;
        }

        @media (max-width: 768px) {
            .nav-links a {
                padding: 1rem;
                width: 100%;
                text-align: center;
                border-radius: 0.5rem;
                min-height: 44px;
                display: flex;
                align-items: center;
                justify-content: center;
                touch-action: manipulation;
                -webkit-tap-highlight-color: transparent;
            }

            .nav-links a:hover {
                background: var(--muted);
            }

            .nav-links a:active {
                background: var(--muted);
                transform: scale(0.98);
            }
        }

        .nav-links a:hover {
            color: var(--primary);
            transform: translateY(-1px);
        }

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

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


        .mobile-menu {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--foreground);
            cursor: pointer;
            padding: 0.5rem;
            border-radius: 0.5rem;
            transition: all 0.3s ease;
            min-width: 44px;
            min-height: 44px;
            align-items: center;
            justify-content: center;
            touch-action: manipulation;
            -webkit-tap-highlight-color: transparent;
        }

        .mobile-menu:hover {
            background: var(--muted);
            color: var(--primary);
        }

        .mobile-menu:active {
            background: var(--muted);
            transform: scale(0.95);
        }

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

        @media (max-width: 480px) {
            .mobile-menu {
                font-size: 1.25rem;
                padding: 0.75rem;
                min-width: 48px;
                min-height: 48px;
            }
        }

        /* Hero Section */
        .hero {
            padding: 10rem 0 6rem;
            background: linear-gradient(135deg, var(--background) 0%, var(--muted) 100%);
            text-align: center;
            position: relative;
            overflow: hidden;
            min-height: 100vh;
            display: flex;
            align-items: center;
        }

        @media (max-width: 768px) {
            .hero {
                padding: 8rem 0 4rem;
                min-height: 80vh;
            }
        }

        @media (max-width: 480px) {
            .hero {
                padding: 6rem 0 3rem;
                min-height: 70vh;
            }
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 30% 20%, rgba(234, 88, 12, 0.1) 0%, transparent 50%),
                        radial-gradient(circle at 70% 80%, rgba(249, 115, 22, 0.1) 0%, transparent 50%);
            pointer-events: none;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 2rem;
            padding: 0.5rem 1rem;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--muted-foreground);
            margin-bottom: 2rem;
            animation: fadeInUp 1s ease-out;
        }

        .hero h1 {
            font-size: clamp(2.5rem, 6vw, 4.5rem);
            font-weight: 800;
            margin-bottom: 1.5rem;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            animation: fadeInUp 1s ease-out 0.1s both;
            line-height: 1.1;
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: clamp(2rem, 8vw, 3rem);
            }
        }

        .hero p {
            font-size: 1.375rem;
            color: var(--muted-foreground);
            margin-bottom: 3rem;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
            animation: fadeInUp 1s ease-out 0.2s both;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .hero p {
                font-size: 1.125rem;
                margin-bottom: 2rem;
                padding: 0 1rem;
            }
        }

        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 3rem;
            margin-top: 3rem;
            animation: fadeInUp 1s ease-out 0.4s both;
        }

        @media (max-width: 768px) {
            .hero-stats {
                flex-direction: column;
                gap: 1.5rem;
                margin-top: 2rem;
            }
        }

        .stat-item {
            text-align: center;
        }

        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .stat-label {
            font-size: 0.875rem;
            color: var(--muted-foreground);
            font-weight: 500;
        }

        .cta-buttons {
            display: flex;
            gap: 1.5rem;
            justify-content: center;
            flex-wrap: wrap;
            animation: fadeInUp 1s ease-out 0.3s both;
        }

        @media (max-width: 768px) {
            .cta-buttons {
                flex-direction: column;
                align-items: center;
                gap: 1rem;
            }
        }

        .btn {
            padding: 1rem 2.5rem;
            border-radius: var(--radius);
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            font-size: 1rem;
            position: relative;
            overflow: hidden;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        @media (max-width: 768px) {
            .btn {
                width: 100%;
                max-width: 300px;
                justify-content: center;
            }
        }

        .btn-primary {
            background: var(--gradient-primary);
            color: var(--primary-foreground);
            box-shadow: var(--shadow);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
            filter: brightness(1.1);
        }

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

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

        /* Features Section */
        .features {
            padding: 8rem 0;
            background: var(--background);
            position: relative;
        }

        @media (max-width: 768px) {
            .features {
                padding: 4rem 0;
            }
        }

        .section-title {
            text-align: center;
            margin-bottom: 5rem;
        }

        @media (max-width: 768px) {
            .section-title {
                margin-bottom: 3rem;
            }
        }

        .section-title h2 {
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            color: var(--foreground);
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        @media (max-width: 768px) {
            .section-title h2 {
                font-size: 2rem;
            }
        }

        .section-title p {
            font-size: 1.25rem;
            color: var(--muted-foreground);
            max-width: 700px;
            margin: 0 auto;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .section-title p {
                font-size: 1rem;
                padding: 0 1rem;
            }
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2.5rem;
            margin-top: 4rem;
        }

        @media (max-width: 768px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
                margin-top: 3rem;
            }
        }

        .feature-card {
            background: var(--card);
            border-radius: 1rem;
            padding: 2.5rem;
            border: 1px solid var(--border);
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        @media (max-width: 768px) {
            .feature-card {
                padding: 2rem;
            }
        }

        @media (max-width: 480px) {
            .feature-card {
                padding: 1.5rem;
            }
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--gradient-primary);
            transform: scaleX(0);
            transition: transform 0.4s ease;
        }

        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary);
        }

        .feature-card:hover::before {
            transform: scaleX(1);
        }

        .feature-icon {
            width: 4rem;
            height: 4rem;
            background: var(--gradient-primary);
            border-radius: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 2rem;
            color: white;
            font-size: 1.75rem;
            transition: all 0.3s ease;
        }

        .feature-card:hover .feature-icon {
            transform: scale(1.1) rotate(5deg);
        }

        .feature-card h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--foreground);
        }

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

        /* Modal */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(4px);
            z-index: 2000;
            animation: fadeIn 0.3s ease;
        }

        .modal-content {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: var(--background);
            border-radius: var(--radius);
            padding: 2rem;
            max-width: 600px;
            width: 90%;
            max-height: 80vh;
            overflow-y: auto;
            animation: slideIn 0.3s ease;
        }

        .modal-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1.5rem;
        }

        .close-btn {
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--muted-foreground);
            transition: color 0.3s ease;
        }

        .close-btn:hover {
            color: var(--foreground);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 500;
            color: var(--foreground);
        }

        .form-group input {
            width: 100%;
            padding: 0.75rem;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            background: var(--background);
            color: var(--foreground);
            transition: border-color 0.3s ease;
        }

        .form-group input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(234, 88, 12, 0.1);
        }

        .response-area {
            background: var(--muted);
            border-radius: var(--radius);
            padding: 1rem;
            font-family: 'JetBrains Mono', monospace;
            font-size: 0.875rem;
            white-space: pre-wrap;
            max-height: 200px;
            overflow-y: auto;
        }

        /* FAQ Section */
        .faq {
            padding: 8rem 0;
            background: var(--muted);
            position: relative;
        }

        @media (max-width: 768px) {
            .faq {
                padding: 4rem 0;
            }
        }

        .faq-icon {
            width: 5rem;
            height: 5rem;
            background: var(--gradient-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 2rem;
            color: white;
            font-size: 2.5rem;
            box-shadow: var(--shadow-lg);
        }

        .faq-container {
            max-width: 900px;
            margin: 0 auto;
        }

        @media (max-width: 768px) {
            .faq-container {
                padding: 0 1rem;
            }
        }

        .faq-item {
            background: var(--background);
            border-radius: 1rem;
            margin-bottom: 1.5rem;
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        .faq-question {
            width: 100%;
            padding: 2rem;
            background: none;
            border: none;
            text-align: left;
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--foreground);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: all 0.3s ease;
        }

        @media (max-width: 768px) {
            .faq-question {
                padding: 1.5rem;
                font-size: 1.125rem;
            }
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-chevron {
            font-size: 1.25rem;
            transition: transform 0.3s ease;
            color: var(--muted-foreground);
        }

        .faq-item.active .faq-chevron {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .faq-answer.active {
            max-height: 300px;
        }

        .faq-answer-content {
            padding: 0 2rem 2rem;
            color: var(--muted-foreground);
            line-height: 1.7;
            font-size: 1rem;
        }

        @media (max-width: 768px) {
            .faq-answer-content {
                padding: 0 1.5rem 1.5rem;
            }
        }

        /* Animations */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

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

        @keyframes slideIn {
            from {
                opacity: 0;
                transform: translate(-50%, -60%);
            }
            to {
                opacity: 1;
                transform: translate(-50%, -50%);
            }
        }



        /* Scroll animations */
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.6s ease;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Footer Section */
        .main-footer {
            background: var(--card);
            color: var(--foreground);
            padding: 2rem 0;
            margin-top: 4rem;
            border-top: 1px solid var(--border);
        }

        @media (max-width: 768px) {
            .main-footer {
                padding: 1.5rem 0;
                margin-top: 2rem;
            }
        }

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

        @media (max-width: 768px) {
            .footer-content {
                flex-direction: column;
                text-align: center;
                gap: 1.5rem;
                padding: 0 1rem;
            }
        }

        @media (max-width: 480px) {
            .footer-content {
                padding: 0 0.75rem;
                gap: 1rem;
            }
        }

        .copyright {
            color: var(--muted-foreground);
            font-size: 0.875rem;
            font-weight: 500;
        }

        .footer-middle {
            display: flex;
            align-items: center;
        }

        .footer-links {
            display: flex;
            gap: 1.5rem;
            align-items: center;
        }

        @media (max-width: 768px) {
            .footer-links {
                justify-content: center;
                flex-wrap: wrap;
                gap: 1rem;
            }
        }

        @media (max-width: 480px) {
            .footer-links {
                flex-direction: row;
                gap: 0.75rem;
                justify-content: center;
                flex-wrap: nowrap;
            }
        }

        @media (max-width: 360px) {
            .footer-links {
                gap: 0.5rem;
            }
        }

        .footer-link {
            color: var(--muted-foreground);
            text-decoration: none;
            font-size: 0.875rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            transition: all 0.3s ease;
            padding: 0.5rem 1rem;
            border-radius: 0.5rem;
            min-height: 44px;
            touch-action: manipulation;
            -webkit-tap-highlight-color: transparent;
            white-space: nowrap;
        }

        .footer-link:hover {
            color: var(--primary);
            background: var(--muted);
            transform: translateY(-1px);
        }

        .footer-link:active {
            transform: scale(0.98);
            background: var(--muted);
        }

        @media (max-width: 768px) {
            .footer-link {
                padding: 0.75rem 1rem;
            }
        }

        @media (max-width: 480px) {
            .footer-link {
                padding: 0.5rem 0.75rem;
                font-size: 0.8rem;
                gap: 0.25rem;
                min-height: 40px;
            }
        }

        @media (max-width: 360px) {
            .footer-link {
                padding: 0.5rem;
                font-size: 0.75rem;
            }
        }

        .footer-link:hover {
            color: var(--primary);
            background: var(--muted);
            transform: translateY(-1px);
        }

        .footer-link i {
            font-size: 1rem;
        }