@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Poppins', sans-serif;
  background-color: #f9f9f9;
}

nav {
  background: linear-gradient(90deg, #7f7fd5, #86a8e7, #91eae4);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  flex-wrap: wrap;
}

.logo {
  font-size: 1.8rem;
  font-weight: 600;
  color: white;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

nav ul li a {
  text-decoration: none;
  color: white;
  font-weight: 500;
  transition: all 0.3s ease;
}

nav ul li a:hover {
  color: #202020;
}

@media (max-width: 768px) {
  nav {
    flex-direction: column;
    align-items: flex-start;
  }

  nav ul {
    flex-direction: column;
    gap: 0.8rem;
    width: 100%;
    padding-top: 1rem;
  }

  nav ul li {
    width: 100%;
  }
}

.container {
  max-width: 80vw;
  margin: auto;
  padding: 2rem 0;
}

.container h1,
.container h2 {
  margin: 1.5rem 0;
  text-align: center;
}

form {
  display: flex;
  flex-direction: column;
  align-items: center;
}

form label {
  font-size: 18px;
  margin: 0.5rem 0 0.2rem;
}

form input,
form select {
  font-size: 16px;
  padding: 10px;
  margin-bottom: 1.2rem;
  width: 100%;
  max-width: 400px;
  border: 1px solid #ccc;
  border-radius: 6px;
}

.btn {
  width: 150px;
  padding: 10px;
  font-size: 16px;
  background-color: #7f7fd5;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.btn:hover {
  background-color: #4e4ea8;
}

.output {
  display: none;
  margin-top: 2rem;
}

.output table {
  width: 100%;
  max-width: 600px;
  border-collapse: collapse;
  margin: 0 auto;
  font-size: 16px;
  text-align: center;
  border: 2px solid #444;
}

.output th,
.output td {
  padding: 12px;
  border: 1px solid #666;
}

footer {
  text-align: center;
  margin-top: 3rem;
  padding: 1rem;
  font-size: 14px;
  background-color: #e0e0e0;
  color: #333;
}