body {
  font-family: Arial, sans-serif;
  background: #f4faff;
  color: #222;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 700px;
  margin: 30px auto;
  padding: 20px;
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

h1 {
  text-align: center;
  margin-bottom: 20px;
}

.section {
  margin-bottom: 20px;
}

input, textarea, button {
  display: block;
  width: 100%;
  margin: 6px 0;
  padding: 10px;
  border-radius: 6px;
  border: 1px solid #ccc;
}

button {
  background: #007bff;
  color: white;
  cursor: pointer;
  border: none;
  font-size: 16px;
}

button:hover {
  background: #0056b3;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
}

table, th, td {
  border: 1px solid #ddd;
  text-align: center;
}

th, td {
  padding: 8px;
}

.hidden {
  display: none;
}

/* Responsive for mobile */
@media (max-width: 600px) {
  .container {
    margin: 10px;
    padding: 10px;
  }

  table, th, td {
    font-size: 12px;
  }

  button {
    font-size: 14px;
    padding: 8px;
  }
}