* {
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}

body {
    margin: 0;
    background: linear-gradient(135deg, #2c3e50, #3498db);
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    width: 100%;
    padding: 20px;
}

.login-box {
    background: #fff;
    max-width: 380px;
    margin: auto;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.login-box h2 {
    text-align: center;
    margin-bottom: 25px;
    color: #333;
}

.input-group {
    margin-bottom: 15px;
}

.input-group input {
    width: 100%;
    padding: 12px;
    border-radius: 6px;
    border: 1px solid #ccc;
    font-size: 16px;
}

.input-group input:focus {
    border-color: #3498db;
    outline: none;
}

button {
    width: 100%;
    padding: 12px;
    background: #3498db;
    border: none;
    border-radius: 6px;
    color: #fff;
    font-size: 16px;
    cursor: pointer;
}

button:hover {
    background: #2980b9;
}

.erro {
    background: #ffdddd;
    color: #a94442;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 15px;
    text-align: center;
}

/* Responsivo */
@media (max-width: 480px) {
    .login-box {
        padding: 20px;
    }

    .login-box h2 {
        font-size: 20px;
    }
}