/* Base Styles */
body {
  font-family: math;
  margin: 0;
  padding: 20px;
  line-height: 1.6;
  color: #333;
  background-color: #f2f2f2;
}

/* Header */
header {
  text-align: center;
  margin-bottom: 30px;
  padding: 20px 0;
  background-color: #f8f9fa;
  border-radius: 8px;
}

header h1 {
  color: #2c3e50;
  margin-bottom: 15px;
}

header p {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Navigation */
nav {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin: 20px 0;
}

nav a {
  border-radius: 8px;
  height: 50px;
  width: 150px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: black;
  text-decoration: none;
  font-weight: bold;
  background-color: aliceblue;
  transition: all 0.3s ease;
}

nav a:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* Main */
main {
  display: flex;
  flex-direction: column;
  gap: 40px;
  max-width: 800px;
  margin: 0 auto;
}

section {
  background-color: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

section header h2 {
  color: #3498db;
  border-bottom: 2px solid #3498db;
  padding-bottom: 10px;
  display: inline-block;
}

/* Form */
form {
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 20px;
  background-color: aliceblue;
  margin-top: 20px;
}

form p {
  font-weight: bold;
  color: #2c3e50;
  background: #ecf9ff;
  padding: 8px 12px;
  border-radius: 6px;
  margin-bottom: 12px;
  border: 1px solid #d6f0ff;
}

.input-group {
  margin-bottom: 15px;
}

.input-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
  color: #2c3e50;
}

input[type=number] {
  width: 100%;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-sizing: border-box;
  font-family: math;
  font-size: 16px;
}

button {
  background-color: aquamarine;
  border: none;
  padding: 12px 20px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: bold;
  width: 48%;
  margin-top: 10px;
  font-size: 16px;
  transition: all 0.3s ease;
}

button:hover {
  background-color: #7fffd4;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

form button+button {
  background-color: #ffcccc;
}

form button+button:hover {
  background-color: #ff9999;
}

.btn-group {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

/* Hide/Show */
.hidden {
  display: none;
}

/* Footer */
footer {
  text-align: center;
  margin-top: 40px;
  padding: 20px;
  background-color: #f8f9fa;
  border-radius: 8px;
}

footer p {
  margin: 0;
  color: #7f8c8d;
}