html {
  background-color: #181818;
  font-family: Arial, Helvetica, sans-serif;
  color: white;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh; /* Centraliza verticalmente */
  margin: 0;
}

form {
  width: 90%;
  min-width: 30em;
  max-width: 35em;
  background-color: #0e1010;
  padding: 1em;
}

fieldset {
  border: none;
  padding: 0; /* Remove o padding padrão do fieldset */
  margin: 0; /* Remove o margin padrão do fieldset */
}

label,
input,
textarea {
  display: block;
  width: 100%;
  box-sizing: border-box; /* Garante que a largura da caixa de texto seja considerada */
}

textarea {
  resize: none;
}

input,
textarea {
  border: none;
  background: rgba(0, 0, 0, 0.3);
  color: white;
  border-bottom-color: #bbb;
  padding: 0.75em;
  margin: 0.5em 0 1em;
}

input:invalid:focus,
textarea:invalid:focus {
  border-bottom: 2px solid #ff000d;
}

input:valid:focus,
textarea:valid:focus {
  border-bottom: 2px solid #0ec72a;
}

input:focus,
textarea:focus {
  border-bottom: 2px solid #8e999a;
  background-color: #2a2727;
}

legend {
  padding: 0.5em;
  text-align: center;
  font-weight: bold;
  color: #8e999a;
  font-size: 1.3em;
}

.btn {
  display: flex;
  border: none;
  background-color: #2a2727;
  color: white;
  cursor: pointer;
  padding: 0.75em;
  font-size: 1.2em;
  margin-left: auto;
}