* {
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f4f7fc;
  margin: 0;
  padding: 0;
  color: #333;
}

.container {
  max-width: 600px;
  margin: 40px auto;
  padding: 20px;
  background: white;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  text-align: center;
}

h1 {
  color: #2c3e50;
}

p {
  color: #7f8c8d;
  margin-bottom: 20px;
}

form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 20px;
  overflow: visible;
}

form > div {
  position: relative;
  flex-grow: 1;
  min-width: 200px;
}

input, select, button {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-size: 16px;
}

input {
  flex-grow: 1;
  min-width: 300px;
}

button {
  background-color: #3498db;
  color: white;
  cursor: pointer;
  border: none;
}

button:hover {
  background-color: #2980b9;
}

#results {
  text-align: left;
  margin-top: 20px;
  padding: 15px;
  border: 1px solid #eee;
  border-radius: 5px;
  background: #f9f9f9;
  display: none;
}

.platform-list {
  margin: 10px 0;
}

.platform-list ul {
  list-style-type: none;
  padding: 0;
}

.platform-list li {
  padding: 4px 0;
}