:root {
    --azul-principal: #3A8DDE;
    --verde-secundario: #4CAF50;
    --azul-claro: #E6F2FB;
    --azul-claro2: #e3eaf3;
    --cinza-claro: #F4F8FC;
    --cinza-escuro: #2C3E50;
    --branco: #ffffff;
}

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

body {
    font-family: 'Open Sans', sans-serif;
    background-color: var(--cinza-claro);
    color: var(--cinza-escuro);
}

nav {
    background-color: var(--azul-principal);
    box-shadow: none;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav .logo {
    font-family: 'Poppins', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--branco);
}

.logo-img {
    height: 60px;
    width: auto;
    display: block;
    margin: 0;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

nav ul li a {
    color: var(--branco);
    text-decoration: none;
    font-weight: bold;
    transition: color 0.2s;
}

nav ul li a:hover {
    color: var(--azul-claro2);
}

header {
    background: url('../images/criancas_estudo.jpg') no-repeat center center;
    background-size: cover;
    color: var(--branco);
    text-align: center;
    padding: 7rem 2rem 4rem;
    margin-top: 60px;
    border-radius: 0 0 12px 12px;
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(44, 62, 80, 0.55);
    /* azul escuro translúcido */
    z-index: 1;
}

header h1,
header p {
    position: relative;
    z-index: 2;
    text-shadow: 0 2px 8px rgba(44, 62, 80, 0.25);
}

header h1 {
    font-family: 'Poppins', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

header p {
    font-size: 1.1rem;
    margin-top: 0;
}

section {
    padding: 2.5rem 2rem;
    text-align: center;
}

.quote {
    font-style: italic;
    font-size: 1.2rem;
    color: var(--verde-secundario);
    margin-top: 2rem;
}

.missao h2,
#contato h2 {
    font-family: 'Poppins', sans-serif;
    color: var(--azul-principal);
}

.projetos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.card {
    background-color: var(--branco);
    padding: 1.2rem;
    border-radius: 6px;
    box-shadow: none;
    border: 1px solid var(--azul-claro2);
}

.card h3 {
    font-family: 'Poppins', sans-serif;
    color: var(--azul-principal);
    margin-bottom: 0.7rem;
    font-size: 1.1rem;
}

.cta {
    background-color: var(--azul-claro2);
    padding: 2rem 0;
}

.cta a {
    background-color: var(--azul-principal);
    color: var(--branco);
    padding: 0.8rem 2rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: bold;
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    transition: background-color 0.3s ease;
    box-shadow: none;
}

.cta a:hover {
    background-color: #256bb2;
}

form {
    max-width: 600px;
    margin: auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

input,
textarea {
    padding: 1rem;
    border: 1px solid var(--azul-claro2);
    border-radius: 6px;
    background: var(--branco);
    font-size: 1rem;
}

button {
    background-color: var(--azul-principal);
    color: var(--branco);
    border: none;
    padding: 1rem;
    font-weight: bold;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #256bb2;
}

footer {
    text-align: center;
    padding: 1rem;
    font-size: 0.9rem;
    background-color: var(--azul-claro2);
    color: #555;
}

/* ...existing code... */
.menu-toggle {
    display: none;
    font-size: 2rem;
    color: var(--branco);
    cursor: pointer;
}

@media (max-width: 700px) {
    nav {
        flex-direction: column;
        align-items: flex-start;
        padding: 1rem;
    }

    .logo {
        margin-bottom: 0.5rem;
    }

    .menu-toggle {
        display: block;
        margin-left: auto;
    }

    nav ul {
        flex-direction: column;
        width: 100%;
        gap: 0;
        display: none;
        background: var(--azul-principal);
        margin-top: 0.5rem;
        border-radius: 0 0 8px 8px;
    }

    nav ul.show {
        display: flex;
    }

    nav ul li {
        width: 100%;
        text-align: left;
        padding: 0.7rem 1rem;
    }

    nav ul li a {
        width: 100%;
        display: block;
    }
}