body {
  font-family: 'Segoe UI', Tahoma, sans-serif;
  background: #f5f6fa;
  color: #2f3640;
  margin: 0;
  padding: 0;
}

header {
  background: #273c75;
  color: #fff;
  text-align: center;
  padding: 20px;
  font-size: 1.3em;
  letter-spacing: 0.5px;
}

main {
  max-width: 700px;
  margin: 30px auto;
  background: #fff;
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

h2 {
  margin-top: 0;
  font-size: 1.2em;
  color: #353b48;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 15px;
}

th, td {
  border-bottom: 1px solid #eee;
  padding: 10px;
  text-align: left;
}

th {
  background: #f1f2f6;
  color: #555;
}

tr:hover {
  background: #eef2ff;
}

button {
  padding: 6px 10px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 0.9em;
  box-shadow: 0 1px 3px rgba(0,0,0,0.12);
}

button:hover {
  opacity: 0.85;
}

.btn-download {
  background: #44bd32;
  color: white;
}

.btn-delete {
  background: #e84118;
  color: white;
  margin-left: 5px;
}

footer {
  text-align: center;
  padding: 15px;
  font-size: 0.8em;
  color: #888;
}

.token-box {
  background: #f1f2f6;
  border: 1px solid #dcdde1;
  border-radius: 6px;
  padding: 10px;
  font-size: 0.9em;
  margin-bottom: 15px;
}