static/style.css

/* style.css */

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #001021;
  color: #333;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 800px;
  margin: 50px auto;
  padding: 30px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}

h1 {
  text-align: center;
  color: #3f51b5;
  margin-bottom: 30px;
}

form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

label {
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

input[type="number"],
input[type="text"],
select {
  padding: 8px 12px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 6px;
  flex-grow: 1;
  margin-left: 10px;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 10px;
}

button {
  background-color: #3f51b5;
  color: white;
  padding: 12px;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
  transition: background 0.3s ease;
}

button:hover {
  background-color: #303f9f;
}

#result {
  margin-top: 20px;
  background: #e8f5e9;
  border: 1px solid #c8e6c9;
  padding: 15px;
  border-radius: 6px;
  font-size: 18px;
}