body {
  margin: 0;
  background: #121212;
  font-family: sans-serif;
  color: white;
}

.screen {
  width: 100vw;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hidden {
  display: none;
}

.login-box {
  background: #1e1e1e;
  padding: 2rem;
  border-radius: 12px;
  text-align: center;
}

.login-box input {
  display: block;
  margin: 1rem auto;
  padding: 0.5rem;
  width: 80%;
  background: #333;
  color: white;
  border: none;
  border-radius: 5px;
}

.login-box button {
  background: #3f51b5;
  border: none;
  color: white;
  padding: 0.6rem 1.5rem;
  margin-top: 1rem;
  border-radius: 5px;
  cursor: pointer;
}

.actions button {
  margin: 0.5rem;
  background: #555;
}

.taskbar {
  position: absolute;
  bottom: 0;
  width: 100%;
  display: flex;
  justify-content: center;
  background: black;
  padding: 0.5rem;
  gap: 0.5rem;
}

.taskbar button {
  background: white;
  border: 1px solid #ccc;
  padding: 0.3rem 0.7rem;
  cursor: pointer;
}