body {
  font-family: 'Segoe UI', 'Courier New', monospace;
  margin: 20px;
  background-color: #f0f0f0;
}

h1 {
  color: #2c3e50;
}

.summary {
  background: #fff;
  padding: 10px;
  border-radius: 5px;
  margin-bottom: 20px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.register-container {
  background: white;
  margin-bottom: 30px;
  padding: 15px;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  break-inside: avoid;
  page-break-inside: avoid;
  overflow-x: auto;
}

.register-title h3 {
  margin: 0 0 5px 0;
  color: #2980b9;
}

.reg-desc {
  font-size: 0.9em;
  color: #555;
  margin-bottom: 10px;
}

table.bitfield-table {
  border-collapse: collapse;
  width: 100%;
  table-layout: fixed;
  font-size: 0.9em;
  word-break: break-all;
}

.bitfield-table th, .bitfield-table td {
  border: 1px solid #aaa;
  text-align: center;
  vertical-align: middle;
  padding: 4px 2px;
}

.bit-row th {
  background-color: #34495e;
  color: white;
  font-weight: normal;
}

.bit-label, .field-label {
  background-color: #ecf0f1;
  font-weight: bold;
  width: 60px;
}

.field-name-cell {
  background-color: #d9eaf7;
  font-weight: bold;
  font-family: monospace;
}

.field-type-cell {
  background-color: #f9e79f;
}

.field-reset-cell {
  background-color: #f5cba7;
}

.bit-num {
  background-color: #5d6d7e;
  font-family: monospace;
}

@media print {
  body {
    margin: 0;
    background: white;
  }
  .register-container {
    break-inside: avoid;
    box-shadow: none;
    overflow-x: visible;
  }
  table.bitfield-table {
    table-layout: auto;
  }
}