body {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #6610f2, #6f42c1, #d63384, #e83e8c);
  background-size: 400% 400%;
  animation: gradientShift 12s ease infinite;
  color: #f0f0f0;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}


.container {
  text-align: center;
  max-width: 400px;
  padding: 30px;
  background-color: #2e2e2e;
  border-radius: 12px;
  box-shadow: 0 0 20px rgba(0,0,0,0.6);
}

h1 {
  margin-bottom: 20px;
  font-size: 1.6rem;
  color: #ffffff;
}

input[type="text"] {
  width: 92%;
  padding: 12px;
  margin-bottom: 15px;
  border: none;
  border-radius: 8px;
  background-color: #3a3a3a;
  color: #e0e0e0;
  font-size: 1rem;
}

input::placeholder {
  color: #888;
}

button {
  width: 100%;
  padding: 12px;
  font-size: 1rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  color: #fff;
  background: linear-gradient(135deg, #6610f2, #6f42c1, #d63384, #e83e8c);
  background-size: 300% 300%;
  animation: gradientShift 8s ease infinite;
  transition: transform 0.2s ease;
  box-shadow: 0 4px 10px rgba(230, 62, 140, 0.3);
}

button:hover {
  transform: scale(1.03);
}


.error {
  margin-top: 10px;
  color: #ff8080;
  font-size: 0.9rem;
}

.card {
  margin-top: 20px;
  background-color: #3c3c3c;
  padding: 20px;
  border-radius: 8px;
  animation: fadeIn 0.4s ease-in-out;
  text-align: left;
}

.card h3 {
  margin-bottom: 10px;
  color: #00bfa6;
}

.card p {
  margin: 6px 0;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.help-icon {
  position: absolute;
  top: 20px;
  right: 20px;
  z-index: 100;
}

.help-icon img {
  width: 64px;
  height: 64px;
  opacity: 0.85;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.help-icon:hover img {
  transform: scale(2.0);
  opacity: 1;
}

@media screen and (max-width: 768px) and (-webkit-min-device-pixel-ratio: 2), 
       screen and (max-width: 768px) and (min-resolution: 192dpi) {
  .container {
    width: 72vw;
    max-width: none;
    padding: 28px;
  }

  input[type="text"],
  button {
    font-size: 1.1rem;
  }

  .help-icon img {
    width: 90px;
    height: 90px;
  }
}