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

html, body {
    height: 100%;
    font-family: Arial, sans-serif;
    position: relative;
}

/* imagem de fundo */
body {
    display: flex;
    justify-content: center;
    align-items: center;
    background-image: url("../img/escola.jpeg"); /* imagem de fundo */
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

/* camada escura para dar contraste */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.35);
    z-index: 0;
}

/* contêiner do card */
.login-container {
    width: 100%;
    max-width: 450px;
    padding: 20px;
    position: relative;
    z-index: 1; /* acima da camada escura */
}

/* card branco */
.login-card {
    background: #ffffff;
    border-radius: 12px;
    padding: 40px 30px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.25);
    text-align: center;
}

/* título do card */
.login-card h2 {
    margin-bottom: 25px;
    font-size: 26px;
    color: #222;
}

/* inputs */
.login-card input {
    width: 100%;
    padding: 12px 14px;
    margin: 10px 0;
    border: 1px solid #cfcfcf;
    border-radius: 8px;
    font-size: 16px;
}

/* botão de login */
.login-card button {
    width: 100%;
    padding: 12px;
    margin-top: 16px;
    border: none;
    border-radius: 8px;
    background-color: #2e8b57; /* verde */
    color: white;
    font-size: 16px;
    cursor: pointer;
    transition: 0.2s;
}

.login-card button:hover {
    filter: brightness(0.9);
}

/* responsivo */
@media (max-width: 480px) {
    .login-card {
        width: 90%;
        padding: 25px;
    }
}