body {
  font-family: Arial, Helvetica, sans-serif;
  background: #f7f7f7;
  margin: 0;
  padding: 0;
  color: #333;
}

header {
  text-align: center;
  margin-top: 40px;
  font-size: 2rem;
  color: #222;
}
main {
  max-width: 600px;
  margin: 40px auto;
  background: white;
  padding: 25px;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
}

form {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

form input[type="text"] {
  flex: 1;
  padding: 12px;
  border-radius: 6px;
  border: 1px solid #ccc;
  font-size: 1rem;
}

form input[type="submit"] {
  padding: 12px 20px;
  background: #4b62ff;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-weight: bold;
  transition: 0.2s;
}

form input[type="submit"]:hover {
  background: #3d4ed6;
}

main div {
  padding: 15px;
  border-left: 4px solid #4b62ff;
  background: #f1f3ff;
  border-radius: 6px;
  line-height: 1.6;
  white-space: pre-wrap;
}

footer {
  text-align: center;
  margin: 30px 0;
  font-size: 0.9rem;
  color: #555;
}
#loader {
  margin-top: 15px;
  font-style: italic;
  opacity: 0.8;
  animation: pulse 1.2s infinite ease-in-out;
  text-align: center;
}

.hidden {
  display: none;
}

@keyframes pulse {
  0% {
    opacity: 0.3;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 0.3;
  }
}

footer a {
  color: #4b62ff;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}