.login-page {
  background: black;
  color: #00ff00;
  font-family: "Courier New", monospace;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  overflow: hidden;
  position: relative;
}


.login-page::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url("https://i.pinimg.com/originals/8d/fb/70/8dfb7036cdf29e13b850615e639e24d8.gif") repeat;
  background-size: cover;
  opacity: 0.3;
  z-index: 0;
}

.titulo-principal {
  position: absolute;
  top: 40px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: #00ff00;
  font-size: 32px;
  font-weight: bold;
  text-shadow: 0 0 10px #00ff00, 0 0 20px #00ff00;
  z-index: 1;
}

.login-container {
  background: rgba(20, 20, 20, 0.95);
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 0 20px #00ff00;
  text-align: center;
  width: 320px;
  position: relative;
  z-index: 1;
}

.login-container h2 {
  margin-bottom: 20px;
  color: #00ff00;
  text-shadow: 0 0 8px #00ff00;
}

.login-container input {
  width: 100%;
  padding: 12px;
  margin: 10px 0;
  border: 2px solid #39e9d7;
  border-radius: 10px;
  font-size: 16px;
  text-align: center;
  background: black;
  color: #f9f9f9;
  outline: none;
  box-shadow: 0 0 8px #0dff9b inset;
}

.login-container button {
  width: 100%;
  padding: 12px;
  margin-top: 10px;
  border: 2px solid #00ff00;
  border-radius: 10px;
  background-color: black;
  font-size: 16px;
  cursor: pointer;
  color: #00ff00;
  text-shadow: 0 0 8px #00ff00;
  transition: all 0.3s ease;
}

.login-container button:hover {
  background-color: #00ff00;
  color: black;
  box-shadow: 0 0 15px #00ff00;
}

#mensagem {
  margin-top: 15px;
  color: red;
  font-weight: bold;
}


header {
  background: #111;
  color: #00ff00;
  padding: 15px;
  text-align: center;
  box-shadow: 0 0 10px #00ff00;
}

nav a {
  margin: 0 10px;
  color: #00ff00;
  text-decoration: none;
  font-weight: bold;
  text-shadow: 0 0 5px #00ff00;
}

nav a:hover {
  text-decoration: underline;
  color: white;
}

main {
  padding: 20px;
  text-align: center;
  color: #00ff00;
  font-family: "Courier New", monospace;
  text-shadow: 0 0 5px #00ff00;
}