body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f4f4f4;
}

/* NAVBAR */
nav {
  background: #333;
  color: white;
  padding: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 15px;
}

nav a {
  color: white;
  text-decoration: none;
}

/* MAIN */
.container {
  padding: 20px;
  text-align: center;
}

/* INPUTS */
input, select, button {
  padding: 10px;
  margin: 10px;
}

/* BUTTON */
button {
  background: #007bff;
  color: white;
  border: none;
  cursor: pointer;
}

/* CARD */
.card {
  background: white;
  padding: 20px;
  margin: 10px auto;
  width: 300px;
}

/* DARK MODE */
.dark {
  background: #111;
  color: white;
}