body {
  margin: 0;
  font-family: Arial, sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  transition: background 0.3s, color 0.3s;
}

/* Light Theme */
body.light {
  background: linear-gradient(to right, #83a4d4, #b6fbff);
  color: #333;
}

/* Dark Theme */
body.dark {
  background: linear-gradient(to right, #0f2027, #203a43, #2c5364);
  color: #f0f0f0;
}

.container {
  background: rgba(255,255,255,0.8);
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

body.dark .container {
  background: rgba(0,0,0,0.5);
}

input {
  padding: 10px;
  width: 200px;
  margin-right: 10px;
}

button {
  padding: 10px 20px;
  background-color: #4CAF50;
  border: none;
  color: white;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background-color: #45a049;
}

#weatherResult {
  margin-top: 20px;
  font-size: 18px;
}