body {
  font-family: Arial;
  margin: 0;
  padding: 0;
  background: linear-gradient(to right, #2c3e50, #4ca1af);
}

.container {
  background: white;
  width: 90%;
  max-width: 1000px;
  margin: auto;
  margin-top: 30px;
  padding: 20px;
  border-radius: 10px;
  text-align: center;
}

input {
  padding: 10px;
  margin: 5px;
}

button {
  padding: 8px 15px;
  background: #3498db;
  color: white;
  border: none;
  cursor: pointer;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th {
  background: #3498db;
  color: white;
}

td, th {
  padding: 10px;
  text-align: center;
}

/* 🌙 DARK MODE */
.dark {
  background: #121212;
  color: white;
}

.dark .container {
  background: #1e1e1e;
  color: white;
}

.dark input {
  background: #333;
  color: white;
  border: 1px solid #555;
}

.dark table {
  background: #1e1e1e;
  color: white;
}

.dark th {
  background: #333;
}

.dark td {
  color: white;
}

.dark button {
  background: #444;
}