:root {
            --primary-color: #667eea;
            --secondary-color: #764ba2;
            --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            --text-dark: #333;
            --text-light: #666;
            --text-lighter: #999;
            --background-light: #f8fafc;
            --background-dark: #1a1a1a;
            --border-color: rgba(0, 0, 0, 0.05);
            --white: #ffffff;
            --shadow-light: 0 10px 30px rgba(0, 0, 0, 0.08);
            --shadow-medium: 0 20px 50px rgba(0, 0, 0, 0.15);
            --shadow-strong: 0 4px 15px rgba(102, 126, 234, 0.3);
            --transition-speed: 0.3s;
            --border-radius-small: 10px;
            --border-radius-medium: 20px;
            --border-radius-large: 25px;
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

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

        body {
            font-family: var(--font-family);
            line-height: 1.6;
            color: var(--text-dark);
            overflow-x: hidden;
            background-color: var(--white);
        }

        /* Accessibility */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* Skip to content link */
        .skip-link {
            position: absolute;
            top: -40px;
            left: 6px;
            background: var(--primary-color);
            color: white;
            padding: 8px;
            text-decoration: none;
            border-radius: var(--border-radius-small);
            z-index: 1000;
            transition: top var(--transition-speed) ease;
        }

        .skip-link:focus {
            top: 6px;
        }

        /* Header */
        .header {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            z-index: 1000;
            transition: all var(--transition-speed) ease;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0);
        }

        .nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 5%;
            max-width: 1400px;
            margin: 0 auto;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
        }

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

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

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

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

        .nav-links a:focus {
            outline: 2px solid var(--primary-color);
            outline-offset: 2px;
            border-radius: var(--border-radius-small);
        }

        .cta-button {
            background: var(--primary-gradient);
            color: white;
            padding: 0.8rem 1.5rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            transition: all var(--transition-speed) ease;
            box-shadow: var(--shadow-strong);
            border: none;
            cursor: pointer;
        }

        .cta-button:hover,
        .cta-button:focus {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
            outline: none;
        }

        .cta-button:active {
            transform: translateY(0);
        }

        /* Hero Section */
        .hero {
            min-height: 100vh;
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            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 1000"><defs><radialGradient id="a" cx="50%" cy="50%" r="50%"><stop offset="0%" stop-color="%23ffffff" stop-opacity="0.1"/><stop offset="100%" stop-color="%23ffffff" stop-opacity="0"/></radialGradient></defs><circle cx="200" cy="200" r="100" fill="url(%23a)" opacity="0.3"><animate attributeName="cx" values="200;800;200" dur="20s" repeatCount="indefinite"/></circle><circle cx="800" cy="300" r="150" fill="url(%23a)" opacity="0.2"><animate attributeName="cy" values="300;700;300" dur="25s" repeatCount="indefinite"/></circle><circle cx="500" cy="800" r="120" fill="url(%23a)" opacity="0.25"><animate attributeName="r" values="120;200;120" dur="15s" repeatCount="indefinite"/></circle></svg>');
        }

        .hero-content {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 5%;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .hero-text h1 {
            font-size: 3.5rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            opacity: 0;
            animation: slideInUp 1s ease 0.3s forwards;
        }

        .hero-text p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 2rem;
            opacity: 0;
            animation: slideInUp 1s ease 0.6s forwards;
        }

        .hero-buttons {
            display: flex;
            gap: 1rem;
            opacity: 0;
            animation: slideInUp 1s ease 0.9s forwards;
        }

        .btn-primary, .btn-secondary {
            padding: 1rem 2rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            transition: all var(--transition-speed) ease;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border: none;
            cursor: pointer;
        }

        .btn-primary {
            background: var(--white);
            color: var(--primary-color);
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
            outline: none;
        }

        .btn-primary:active {
            transform: translateY(0);
        }

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

        .btn-secondary:hover,
        .btn-secondary:focus {
            background: var(--white);
            color: var(--primary-color);
            outline: none;
        }

        .btn-secondary:active {
            transform: translateY(0);
        }

        .hero-visual {
            position: relative;
            opacity: 0;
            animation: slideInRight 1s ease 0.3s forwards;
        }

        .floating-card {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--border-radius-medium);
            padding: 2rem;
            margin: 1rem;
            color: var(--white);
            animation: float 6s ease-in-out infinite;
            transition: transform var(--transition-speed) ease;
        }

        .floating-card:hover {
            transform: scale(1.05);
        }

        .floating-card:nth-child(2) {
            animation-delay: -2s;
        }

        .floating-card:nth-child(3) {
            animation-delay: -4s;
        }

        /* Features Section */
        .features {
            padding: 6rem 5% 4rem;
            background: var(--background-light);
        }

        .container {
            max-width: 1400px;
            margin: 0 auto;
        }

        .section-header {
            text-align: center;
            margin-bottom: 4rem;
        }

        .section-header h2 {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 1rem;
        }

        .section-header p {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        .feature-card {
            background: var(--white);
            padding: 2.5rem;
            border-radius: var(--border-radius-medium);
            box-shadow: var(--shadow-light);
            transition: all var(--transition-speed) ease;
            border: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }

        .feature-card:hover,
        .feature-card:focus-within {
            transform: translateY(-10px);
            box-shadow: var(--shadow-medium);
        }

        .feature-card:focus-within {
            outline: 2px solid var(--primary-color);
            outline-offset: -2px;
        }

        .feature-icon {
            width: 60px;
            height: 60px;
            background: var(--primary-gradient);
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: var(--white);
            font-size: 1.5rem;
            transition: transform var(--transition-speed) ease;
        }

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

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

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

        /* Stats Section */
        .stats {
            padding: 4rem 5%;
            background: var(--primary-gradient);
            color: var(--white);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            text-align: center;
        }

        .stat-item h3 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            transition: transform var(--transition-speed) ease;
        }

        .stat-item:hover h3 {
            transform: scale(1.1);
        }

        .stat-item p {
            opacity: 0.9;
            font-size: 1.1rem;
        }

        /* Contact Section */
        .contact {
            padding: 6rem 5%;
            background: var(--white);
        }

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

        .contact-info h3 {
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            color: var(--text-dark);
        }

        .contact-info p {
            margin-bottom: 0.5rem;
            color: var(--text-dark);
        }

        .contact-form {
            background: var(--background-light);
            padding: 2.5rem;
            border-radius: var(--border-radius-medium);
            border: 1px solid var(--border-color);
        }

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

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

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 1rem;
            border: 1px solid #ddd;
            border-radius: var(--border-radius-small);
            font-family: var(--font-family);
            transition: all var(--transition-speed) ease;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }

        .form-group input:invalid,
        .form-group textarea:invalid {
            border-color: #e53e3e;
        }

        /* Footer */
        .footer {
            background: var(--background-dark);
            color: var(--white);
            padding: 3rem 5% 1rem;
        }

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

        .footer-section h3 {
            margin-bottom: 1rem;
            color: var(--primary-color);
        }

        .footer-section p,
        .footer-section a {
            color: #ccc;
            text-decoration: none;
            line-height: 1.8;
            transition: color var(--transition-speed) ease;
        }

        .footer-section a:hover,
        .footer-section a:focus {
            color: var(--primary-color);
            outline: none;
        }

        .footer-section a:focus {
            outline: 2px solid var(--primary-color);
            outline-offset: 2px;
            border-radius: var(--border-radius-small);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #333;
            color: var(--text-lighter);
            font-size: 0.9rem;
        }

        /* Automations Section Styles */
        .automations {
            padding: 6rem 5% 4rem;
            background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
        }

        .automation-showcase {
            margin-bottom: 4rem;
        }

        .showcase-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
            gap: 3rem;
            margin-bottom: 3rem;
        }

        .showcase-item {
            background: var(--white);
            border-radius: var(--border-radius-large);
            padding: 3rem;
            box-shadow: var(--shadow-light);
            transition: all var(--transition-speed) ease;
            border: 1px solid var(--border-color);
        }

        .showcase-item:hover,
        .showcase-item:focus-within {
            transform: translateY(-10px);
            box-shadow: var(--shadow-medium);
        }

        .showcase-icon {
            font-size: 3rem;
            margin-bottom: 1.5rem;
            color: var(--primary-color);
        }

        .showcase-item h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--text-dark);
        }

        .showcase-item p {
            color: var(--text-light);
            margin-bottom: 1.5rem;
            line-height: 1.6;
        }

        .feature-list {
            list-style: none;
            margin-bottom: 2rem;
        }

        .feature-list li {
            padding: 0.5rem 0;
            color: #555;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .feature-list li::before {
            content: '✓';
            color: var(--primary-color);
            font-weight: bold;
        }

        /* WhatsApp Mockup */
        .whatsapp-mockup {
            background: #25d366;
            border-radius: 15px;
            overflow: hidden;
            max-width: 300px;
            margin-top: 1rem;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
        }

        .whatsapp-header {
            background: #075e54;
            color: var(--white);
            padding: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .status-dot {
            width: 10px;
            height: 10px;
            background: #4fc3f7;
            border-radius: 50%;
        }

        .whatsapp-messages {
            background: #e5ddd5;
            padding: 1rem;
            min-height: 120px;
        }

        .message {
            margin-bottom: 0.5rem;
            padding: 0.5rem 1rem;
            border-radius: 15px;
            max-width: 80%;
            font-size: 0.9rem;
        }

        .bot-message {
            background: var(--white);
            margin-right: auto;
        }

        .user-message {
            background: #dcf8c6;
            margin-left: auto;
        }

        .typing {
            animation: typing 2s infinite;
        }

        @keyframes typing {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.5; }
        }

        /* VoIP Dashboard */
        .voip-dashboard {
            background: #1a1a1a;
            border-radius: 15px;
            padding: 1.5rem;
            color: var(--white);
            max-width: 300px;
            margin-top: 1rem;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
        }

        .dashboard-header h4 {
            color: var(--primary-color);
            margin-bottom: 1rem;
        }

        .dashboard-stats {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
        }

        .stat-box {
            background: #2a2a2a;
            border-radius: 10px;
            padding: 1rem;
            text-align: center;
        }

        .stat-number {
            display: block;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary-color);
        }

        .stat-label {
            font-size: 0.8rem;
            opacity: 0.8;
        }

        /* Automation Grid */
        .automation-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 4rem 0;
        }

        .automation-card {
            background: var(--white);
            padding: 2rem;
            border-radius: var(--border-radius-medium);
            box-shadow: var(--shadow-light);
            transition: all var(--transition-speed) ease;
            border: 1px solid var(--border-color);
        }

        .automation-card:hover,
        .automation-card:focus-within {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
        }

        .automation-icon {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            color: var(--primary-color);
        }

        .automation-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--text-dark);
        }

        .automation-card p {
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 1.5rem;
        }

        .automation-features {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
        }

        .feature-tag {
            background: var(--primary-gradient);
            color: var(--white);
            padding: 0.3rem 0.8rem;
            border-radius: 15px;
            font-size: 0.8rem;
            font-weight: 500;
        }

        /* ROI Calculator */
        .roi-calculator {
            background: var(--primary-gradient);
            border-radius: var(--border-radius-large);
            padding: 3rem;
            color: var(--white);
            margin-top: 4rem;
        }

        .roi-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }

        .roi-text h3 {
            font-size: 2rem;
            margin-bottom: 1rem;
        }

        .roi-benefits {
            margin-top: 2rem;
        }

        .benefit-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 1.5rem;
        }

        .benefit-icon {
            font-size: 2rem;
        }

        .benefit-text strong {
            display: block;
            margin-bottom: 0.25rem;
        }

        .benefit-text p {
            opacity: 0.9;
            font-size: 0.9rem;
        }

        .roi-form {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(20px);
            border-radius: var(--border-radius-medium);
            padding: 2rem;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .roi-form h4 {
            margin-bottom: 1.5rem;
            text-align: center;
        }

        .roi-form .form-group {
            margin-bottom: 1rem;
        }

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

        .roi-form input {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--border-radius-small);
            background: rgba(255, 255, 255, 0.1);
            color: var(--white);
            font-family: var(--font-family);
        }

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

        .roi-form input:focus {
            outline: none;
            border-color: var(--white);
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
        }

        .calculate-btn {
            width: 100%;
            background: var(--white);
            color: var(--primary-color);
            border: none;
            padding: 1rem;
            border-radius: var(--border-radius-small);
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition-speed) ease;
            margin-top: 1rem;
        }

        .calculate-btn:hover,
        .calculate-btn:focus {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
            outline: none;
        }

        .calculate-btn:active {
            transform: translateY(0);
        }

        .roi-result {
            margin-top: 1rem;
            padding: 1rem;
            background: rgba(255, 255, 255, 0.1);
            border-radius: var(--border-radius-small);
            text-align: center;
            font-weight: 600;
            display: none;
        }

        .roi-result.show {
            display: block;
            animation: slideInUp 0.5s ease;
        }

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

        @keyframes slideInRight {
            from {
                opacity: 0;
                transform: translateX(50px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

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

        /* Responsive */
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .hero-content {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .hero-text h1 {
                font-size: 2.5rem;
            }
            .contact-content {
                grid-template-columns: 1fr;
            }
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            .showcase-grid {
                grid-template-columns: 1fr;
            }
            .roi-content {
                grid-template-columns: 1fr;
            }
            .showcase-item {
                padding: 2rem;
            }
            .section-header h2 {
                font-size: 2rem;
            }
        }

        /* High contrast mode support */
        @media (prefers-contrast: high) {
            .feature-card,
            .automation-card,
            .showcase-item {
                border: 2px solid var(--primary-color);
            }
            .btn-primary,
            .btn-secondary,
            .cta-button {
                border: 2px solid var(--white);
            }
        }

        /* Reduced motion support */
        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
            .floating-card {
                animation: none;
            }
        }

        /* Print styles */
        @media print {
            .skip-link,
            .header,
            .cta-button,
            .floating-card,
            .whatsapp-mockup,
            .voip-dashboard,
            .roi-calculator,
            .hero-visual {
                display: none !important;
            }
            body {
                font-size: 12pt;
                color: #000;
            }
            .hero,
            .stats {
                background: white !important;
            }
            .feature-icon,
            .showcase-icon,
            .automation-icon,
            .benefit-icon {
                filter: invert(1);
            }
        }