/* Global */
body, html {
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  background: #f4f6f9;
  color: #333;
}

h2, h3 {
  margin-bottom: 15px;
  color: #222;
}

/* Buttons */
button {
  padding: 10px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-weight: bold;
  transition: background 0.3s;
}

button:disabled {
  background: #888;
  cursor: not-allowed;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  background: #fff;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}
th, td {
  padding: 12px;
  border: 1px solid #ddd;
  text-align: center;
}
th {
  background: #007bff;
  color: #fff;
}