body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #f0f4f8;
  margin: 0;
  /* padding: 20px; */
}

.container {
  max-width: 800px;
  margin: auto;
  background: white;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

h1 {
  text-align: center;
  margin-bottom: 30px;
  font-size: 2em;
  color: #2c3e50;
}

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

thead {
  background-color: #0d0d0d;
  color: white;
}

th, td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid #ddd;
}

tbody tr:hover {
  background-color: #f1f9ff;
  transition: background 0.3s;
}

.copy-btn {
  background: none;
  border: none;
  cursor: pointer;
  margin-left: 8px;
  font-size: 16px;
}
.copy-btn:hover {
  opacity: 0.7;
}