/* Body styling */
body {
  font-family: Arial, sans-serif;
  background: #e0f7fa; /* Light teal background */
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
  padding-top: 50px;
}

/* Main container styling */
.container {
  background: #ffffff; /* White card */
  padding: 25px 30px;
  border-radius: 15px; /* Rounded corners */
  box-shadow: 0 8px 25px rgba(0,0,0,0.1); /* Soft shadow */
  width: 360px;
}

/* Header section */
header {
  text-align: center;
  margin-bottom: 20px;
}

header h1 {
  margin: 0;
  color: #00796b; /* Teal title */
  font-size: 22px;
}

header p {
  margin: 5px 0 0 0;
  font-size: 13px;
  color: #004d40; /* Darker teal for author */
}

/* Labels styling */
label {
  display: block;
  margin-top: 15px;
  margin-bottom: 5px;
  color: #004d40;
  font-weight: bold;
}

/* Inputs, selects, and button styling */
select, input[type="number"], button {
  width: 100%;
  padding: 10px 12px;
  border-radius: 6px;
  border: 1px solid #b2dfdb; /* Light border */
  font-size: 14px;
  margin-bottom: 10px;
  box-sizing: border-box;
}

/* Button specific styling */
button {
  background: #00796b;
  color: #fff;
  border: none;
  cursor: pointer;
  font-weight: bold;
  transition: 0.3s;
}

button:hover {
  background: #004d40; /* Darker teal on hover */
}

/* Result display area styling */
.result {
  margin-top: 15px;
  padding: 12px;
  background: #b2dfdb; /* Light teal */
  border-radius: 8px;
  text-align: center;
  font-weight: bold;
  color: #004d40;
  white-space: pre-line; /* Keep line breaks */
}

/* Footer styling */
footer {
  text-align: center;
  margin-top: 20px;
  font-size: 12px;
  color: #004d40;
}