body {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  height: 100vh;
  margin: 0;
  background: #f8f9fa;
  font-family: 'Helvetica Neue', sans-serif;
}

.container {
  text-align: center;
  opacity: 0;
  animation: fadeIn 2s ease-out forwards;
}

.logo {
  width: 30vw;        /* Responsive: 30% of screen width */
  max-width: 280px;
  margin-bottom: 16px;
  animation: fadeIn 2s ease-in forwards;
  animation-delay: 0.2s;
}

.input-group {
  margin-top: 8px;
  opacity: 0;
  animation: fadeIn 2s ease-in 2s forwards;
  animation-delay: 2s;
}

/* Fade transitions */
.fade {
  opacity: 0;
  transition: opacity 1s ease;
}

.fade.show {
  opacity: 1;
}

.fade.hide {
  opacity: 0;
  pointer-events: none;
  transition: opacity 1s ease;
}

input[type="password"] {
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 16px;
}

button {
  margin-left: 10px;
  padding: 10px 16px;
  border: none;
  background-color: #333;
  color: #fff;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.3s;
}

button:hover {
  background-color: #555;
}

#download {
  margin-top: 24px;
  opacity: 0;
  transition: opacity 1s;
}

#download.show {
  opacity: 1;
}

.hidden {
  display: none;
}

@keyframes fadeIn {
  to {
    opacity: 1;
  }
}

@keyframes scaleFade {
  0% {
    opacity: 0;
    transform: scale(0.9);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}