body {
    background-color: #111;
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.login-container {
    background-image: url('../img/fundo.png'); /* opcional */
    background-size: cover;
    border: 2px solid orange;
    padding: 40px;
    border-radius: 10px;
    width: 350px;
    text-align: center;
    position: relative;
}

.imagem-unificada {
    width: 100%;
    max-width: 350px;
    margin-bottom: 20px;
}

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

form label {
    margin-top: 10px;
    font-size: 14px;
    letter-spacing: 1px;
}

form input {
    width: 90%;
    padding: 10px;
    background-color: black;
    color: white;
    border: 1px solid white;
    border-radius: 4px;
    margin-top: 5px;
}

form button {
    margin-top: 20px;
    padding: 10px 20px;
    background-color: #cc0000;
    border: none;
    color: white;
    font-weight: bold;
    border-radius: 4px;
    cursor: pointer;
    width: 100%;
}

form button:hover {
    background-color: #990000;
}

.nexus-titulo {
    margin-top: 30px;
    font-size: 28px;
    font-weight: bold;
    letter-spacing: 3px;
    color: #ccc;
}

.popup-erro {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: #ff4444;
    padding: 12px 20px;
    border-radius: 6px;
    font-weight: bold;
    box-shadow: 0 0 10px black;
    animation: fadeIn 0.3s ease-in-out;
    z-index: 999;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to   { opacity: 1; transform: translateY(0); }
}