* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Arial', sans-serif;
}

body {
    background-color: #0a0e17;
    color: #f0f0f0;
    line-height: 1.6;
}

/* Header */
header {
    background-color: #1a202c;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    position: relative;
}

.logo {
    flex: 1;
}

.logo h1 {
    color: #00FFCC;
    font-size: 2rem;
    margin: 0;
}

nav {
    flex: 2;
    display: flex;
    justify-content: flex-end;
}

nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

nav ul li {
    margin-left: 2rem;
}

nav ul li a {
    color: #f0f0f0;
    text-decoration: none;
    font-size: 1.1rem;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: #00FFCC;
}

/* Hero Section */
.hero {
    height: 90vh;
    background: linear-gradient(to right, #0a0e17, #002233);
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #f0f0f0;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background-image: url('iot-background.jpg');
    opacity: 0.1;
    z-index: -1;
}

.hero h2 {
    font-size: 3.5rem;
}

.hero p {
    font-size: 1.5rem;
    margin: 1rem 0;
}

.cta-button {
    background-color: #00FFCC;
    color: #0a0e17;
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 50px;
    font-size: 1.2rem;
    transition: background-color 0.3s ease;
}

.cta-button:hover {
    background-color: #00cc99;
}

/* About Section */
.about {
    padding: 3rem 2rem;
    text-align: center;
    background-color: #1a202c;
}

.about h2 {
    font-size: 2.5rem;
    color: #00FFCC;
}

/* Services Section */
.services {
    padding: 3rem 2rem;
    text-align: center;
}

.service-cards {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 1rem; /* Espaçamento entre os cartões */
}

.card {
    background-color: #1a202c;
    padding: 2rem;
    margin: 1rem;
    border-radius: 10px;
    width: 100%;
    max-width: 300px; /* Limite a largura máxima dos cartões */
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.card h3 {
    color: #00FFCC;
    margin-bottom: 1rem;
}

.card p {
    color: #f0f0f0;
}

/* Contact Section */
.contact {
    padding: 3rem 2rem;
    background-color: #0a0e17;
    text-align: center;
}

.contact h2 {
    font-size: 2.5rem;
    color: #00FFCC;
    margin-bottom: 2rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.contact-form input, 
.contact-form textarea {
    width: 80%;
    padding: 1rem;
    margin: 0.5rem 0;
    border: none;
    border-radius: 5px;
    background-color: #1a202c;
    color: #f0f0f0;
}

.contact-form button {
    padding: 1rem 2rem;
    background-color: #00FFCC;
    border: none;
    color: #0a0e17;
    font-size: 1.2rem;
    border-radius: 50px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.contact-form button:hover {
    background-color: #00cc99;
}

/* Footer */
footer {
    background-color: #1a202c;
    text-align: center;
    padding: 1rem;
    color: #f0f0f0;
}

/* Estilos responsivos */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        align-items: flex-start;
    }

    nav {
        width: 100%;
        margin-top: 1rem;
        justify-content: center;
    }

    nav ul {
        flex-direction: row;
        justify-content: center;
    }

    nav ul li {
        margin-left: 1rem;
    }

    .service-cards {
        flex-direction: column;
        align-items: center;
    }

    .card {
        width: 90%; /* Ajuste a largura dos cartões para melhor visualização em telas pequenas */
        max-width: none; /* Remove o limite de largura máxima em telas pequenas */
    }
}

@media (max-width: 480px) {
    .hero h2 {
        font-size: 2rem; /* Ajusta o tamanho da fonte para dispositivos móveis */
    }

    .cta-button {
        padding: 0.5rem 1rem;
        font-size: 1rem; /* Ajusta o tamanho da fonte para dispositivos móveis */
    }
}