.login-form {
  align-items: center;
  display: flex;
  flex-direction: column;
  height: 100vh;
  justify-content: center;
}

.login__header {
  align-items: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  margin-bottom: 50px;
}

.login__header img {
  width: 100px;
}

.login__header h1 {
  color: #333;
  font-size: 1.5em;
}

.login__subtitle {
  color: #97ce4c;
  font-size: 0.9em;
  margin-top: 10px;
}

.login__input {
  border: 2px solid #333;
  border-radius: 8px;
  color: #333;
  font-size: 1em;
  margin-bottom: 15px;
  max-width: 300px;
  outline: none;
  padding: 15px;
  width: 100%;
}

.login__button {
  background-color: #97ce4c;
  border-radius: 8px;
  color: #333;
  cursor: pointer;
  font-size: 1em;
  max-width: 300px;
  padding: 15px;
  width: 100%;
  transition: background-color 0.3s ease;
}

.login__button:hover:not(:disabled) {
  background-color: #7ab832;
}

.login__button:disabled {
  background-color: #eee;
  color: #aaa;
  cursor: auto;
}

/* Seletor de Dificuldade */
.difficulty-selector {
  margin-bottom: 20px;
  text-align: center;
  max-width: 300px;
  width: 100%;
}

.difficulty-selector label {
  color: #333;
  font-size: 0.8em;
  display: block;
  margin-bottom: 10px;
}

.difficulty-buttons {
  display: flex;
  gap: 10px;
  justify-content: center;
}

.difficulty-btn {
  padding: 10px 15px;
  border-radius: 5px;
  background-color: #eee;
  color: #333;
  cursor: pointer;
  font-size: 0.7em;
  transition: all 0.3s ease;
}

.difficulty-btn:hover {
  background-color: #ddd;
}

.difficulty-btn.active {
  background-color: #97ce4c;
  color: #333;
}