:root {
            --azul-escuro: #0a1929;
            --azul-medio: #1e3a5f;
            --preto: #000000;
            --prata: #c0c0c0;
            --prata-claro: #e8e8e8;
            --branco: #ffffff;
            --azul-accent: #2196F3;
        }

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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: var(--preto);
            overflow-x: hidden;
        }

        /* Header */
        header {
            background: linear-gradient(135deg, var(--azul-escuro) 0%, var(--azul-medio) 100%);
            padding: 20px 50px;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0,0,0,0.3);
        }

        .header-content {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 2.5em;
            font-weight: bold;
            color: var(--prata);
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }

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

        nav ul {
            display: flex;
            gap: 30px;
            list-style: none;
        }

        nav a {
            color: var(--prata-claro);
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s;
            font-size: 1.1em;
        }

        nav a:hover {
            color: var(--azul-accent);
            transform: translateY(-2px);
        }

        /* Hero Section */
        .hero {
            background: linear-gradient(135deg, var(--azul-escuro) 0%, var(--preto) 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
            padding-top: 80px;
        }

        .hero::before {
            content: '';
            position: absolute;
            width: 150%;
            height: 150%;
            background: radial-gradient(circle, var(--azul-medio) 1px, transparent 1px);
            background-size: 50px 50px;
            opacity: 0.1;
            animation: moveGrid 20s linear infinite;
        }

        @keyframes moveGrid {
            0% { transform: translate(0, 0); }
            100% { transform: translate(50px, 50px); }
        }

        .hero-content {
            text-align: center;
            color: var(--branco);
            z-index: 2;
            max-width: 900px;
            padding: 20px;
        }

        .hero h1 {
            font-size: 4em;
            margin-bottom: 20px;
            color: var(--prata-claro);
            text-shadow: 3px 3px 6px rgba(0,0,0,0.5);
            animation: fadeInDown 1s ease;
        }

        .hero h1 span {
            color: var(--azul-accent);
        }

        .hero p {
            font-size: 1.5em;
            margin-bottom: 40px;
            color: var(--prata);
            animation: fadeInUp 1s ease 0.3s both;
        }

        @keyframes fadeInDown {
            from { opacity: 0; transform: translateY(-30px); }
            to { opacity: 1; transform: translateY(0); }
        }

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

        .cta-buttons {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
            animation: fadeInUp 1s ease 0.6s both;
        }

        .btn {
            padding: 18px 40px;
            font-size: 1.2em;
            border: none;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: bold;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--azul-accent), #1976D2);
            color: var(--branco);
            box-shadow: 0 4px 15px rgba(33, 150, 243, 0.4);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 25px rgba(33, 150, 243, 0.6);
        }

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

        .btn-secondary:hover {
            background: var(--prata);
            color: var(--azul-escuro);
            transform: translateY(-3px);
        }

        /* Services Section */
        .services {
            padding: 100px 50px;
            background: var(--prata-claro);
        }

        .container {
            max-width: 1400px;
            margin: 20px auto 0;
        }

        h2 {
            font-size: 3em;
            text-align: center;
            margin-bottom: 60px;
            color: var(--azul-escuro);
        }

        .services-grid {
            display: grid;
            /* grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); */
            grid-template-columns: repeat(3, 1fr); /* 3 colunas fixas */
            gap: 40px;

            max-width: 1200px; /* Opcional: limita a largura */
            margin: 0 auto;

        }

        .service-card {
            background: var(--branco);
            padding: 40px;
            border-radius: 20px;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            transition: all 0.3s;
            border-top: 5px solid var(--azul-accent);
        }

        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.2);
        }

        .service-icon {
            font-size: 4em;
            color: var(--azul-accent);
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 1.8em;
            color: var(--azul-escuro);
            margin-bottom: 15px;
        }

        .service-card p {
            color: #666;
            line-height: 1.6;
            font-size: 1.1em;
        }

        /* Free Space Section */
        .free-space {
            padding: 100px 50px;
            background: linear-gradient(135deg, var(--azul-escuro) 0%, var(--preto) 100%);
            color: var(--branco);
        }

        .free-space h2 {
            color: var(--prata-claro);
        }

        .free-space-content {
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
        }

        .free-space p {
            font-size: 1.3em;
            line-height: 1.8;
            color: var(--prata);
            margin-bottom: 30px;
        }

        .highlight-box {
            background: rgba(255,255,255,0.1);
            padding: 30px;
            border-radius: 15px;
            margin: 40px 0;
            border-left: 5px solid var(--azul-accent);
        }

        .highlight-box h3 {
            color: var(--azul-accent);
            font-size: 2em;
            margin-bottom: 15px;
        }

        /* Contact Section */
        .contact {
            padding: 100px 50px;
            background: var(--prata-claro);
        }

        .contact-form {
            max-width: 700px;
            margin: 0 auto;
            background: var(--branco);
            padding: 50px;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }

        .form-group {
            margin-bottom: 25px;
        }

        label {
            display: block;
            margin-bottom: 8px;
            font-weight: bold;
            color: var(--azul-escuro);
        }

        input, textarea {
            width: 100%;
            padding: 15px;
            border: 2px solid var(--prata);
            border-radius: 10px;
            font-size: 1em;
            transition: all 0.3s;
        }

        input:focus, textarea:focus {
            outline: none;
            border-color: var(--azul-accent);
            box-shadow: 0 0 10px rgba(33, 150, 243, 0.2);
        }

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

        .success-message {
            display: none;
            background: #4caf50;
            color: white;
            padding: 15px;
            border-radius: 10px;
            margin-bottom: 20px;
            text-align: center;
        }

        /* WhatsApp Float Button */
        .whatsapp-float {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 70px;
            height: 70px;
            background-color: #25D366;
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 40px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.3);
            cursor: pointer;
            transition: all 0.3s;
            z-index: 999;
            text-decoration: none;
        }

        .whatsapp-float:hover {
            transform: scale(1.1);
            box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
        }

        /* Footer */
        footer {
            background: var(--azul-escuro);
            color: var(--prata);
            text-align: center;
            padding: 40px 20px;
        }

        footer p {
            font-size: 1.1em;
        }

        /* Responsive */
        .menu-toggle {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 5px;
        }

        .menu-toggle span {
            width: 30px;
            height: 3px;
            background: var(--prata);
            border-radius: 3px;
            transition: all 0.3s;
        }

        @media (max-width: 768px) {
            .logo {
                font-size: 2em;
            }

            /* Alterado: Prepara o nav para ser uma barra lateral/topo suspensa */
            nav {
                display: block; /* Permite o controle de transição */
                position: absolute;
                top: 100%; /* Fica logo abaixo do header */
                left: 0;
                width: 100%;
                background: linear-gradient(135deg, var(--azul-escuro) 0%, var(--azul-medio) 100%);
                max-height: 0; /* Começa fechado */
                overflow: hidden;
                transition: max-height 0.3s ease-in-out;
                box-shadow: 0 4px 10px rgba(0,0,0,0.2);
            }

            /* Nova Classe: Ativada via JavaScript */
            nav.active {
                max-height: 350px; /* Abre o menu com transição suave */
            }

            /* Ajusta os links para ficarem um abaixo do outro no mobile */
            nav ul {
                flex-direction: column;
                gap: 0;
                padding: 10px 0;
            }

            nav ul li {
                width: 100%;
                text-align: center;
            }

            nav a {
                display: block;
                padding: 15px 20px;
                border-bottom: 1px solid rgba(255,255,255,0.05);
            }

            nav a:hover {
                background: rgba(33, 150, 243, 0.1);
                transform: none; /* Remove o efeito 3D no mobile */
            }

            .menu-toggle {
                display: flex;
            }

            /* Efeito visual opcional: Transforma o hamburguer em "X" quando ativo */
            .menu-toggle.active span:nth-child(1) {
                transform: rotate(45deg) translate(5px, 5px);
            }
            .menu-toggle.active span:nth-child(2) {
                opacity: 0;
            }
            .menu-toggle.active span:nth-child(3) {
                transform: rotate(-45deg) translate(6px, -6px);
            }

            .hero h1 { font-size: 2.5em; }
            .hero p { font-size: 1.2em; }
            header { padding: 15px 20px; }
            .services, .contact, .free-space { padding: 60px 20px; }
            h2 { font-size: 2em; }
            .contact-form { padding: 30px 20px; }
            .services-grid { grid-template-columns: repeat(2, 1fr); }
        }


        @media (max-width: 480px) {
            .hero h1 {
                font-size: 2em;
            }

            .btn {
                padding: 15px 30px;
                font-size: 1em;
            }

            .whatsapp-float {
                width: 60px;
                height: 60px;
                font-size: 35px;
                bottom: 20px;
                right: 20px;
            }

            .services-grid {
                grid-template-columns: 1fr; /* 1 coluna em mobile */
            }
        }