::selection {
  background-color: gray;
}
body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #121212;
body, html, p, h2, {  
  -webkit-user-select: none; /* Safari */
  -ms-user-select: none; /* IE 10+ */
  user-select: none; /* Padrão */
  -webkit-tap-highlight-color: transparent; 
  pointer-events: none; /* evita clique e seleção */
}

.container {
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}
.form {
  width: 400px;
  background-image: linear-gradient(to bottom, #424242, #212121);
  display: flex;
  align-items: center;
  flex-direction: column;
  border-radius: 0.5rem;
  padding: 2rem;
}
.title {
  color: wheat;
  margin: 1rem 0;
  font-size: 2rem;
}
.input {
  margin: 0.5rem 0;
  padding: 1rem 0.5rem;
  width: 20rem;
  background-color: inherit;
  color: wheat;
  border: none;
  outline: none;
  border-bottom: 1px solid wheat;
  transition: all 400ms;
}
.input:hover {
  background-color: #424242;
  border-radius: 0.5rem;
}
.btn {
  height: 3rem;
  width: 20rem;
  margin-top: 1.5rem;
  background-color: wheat;
  border-radius: 0.5rem;
  border: none;
  font-size: 1.2rem;
  transition: all 400ms;
  cursor: pointer;
  box-shadow: 0 0 10px antiquewhite, 0 0 10px antiquewhite;
}
.btn:hover {
  background-color: antiquewhite;
  box-shadow: none;
}
.switch {
  color: lightgray;
  margin-top: 1rem;
  cursor: pointer;
  text-decoration: underline;
}
.message {
  margin-top: 1rem;
  color: lightgreen;
  font-size: 0.9rem;
}
header button {
  padding: 8px 16px;
  margin-left: 10px;
  cursor: pointer;
  border: none;
  background-color: #444;
  color: white;
  border-radius: 4px;
  transition: background-color 0.3s;
}

header button:hover {
  background-color: #666;
}