.writeup-header {
  background-color: #111;
  border: 1px solid #222;
  border-left: 4px solid #dc3545;
}

.code-block {
  background-color: #0a0a0a;
  border: 1px solid #222;
  border-radius: 6px;
  overflow: hidden;
  font-family: 'Courier New', monospace;
  font-size: 0.88rem;
}

.code-header {
  background-color: #1c1c1c;
  padding: 6px 14px;
  border-bottom: 1px solid #222;
}

.code-block pre {
  margin: 0;
  padding: 14px;
  color: #ccc;
  white-space: pre-wrap;
  word-break: break-all;
}

.code-block code {
  color: #ccc;
}

.alert-custom {
  background-color: #1a1500;
  border: 1px solid #3a3000;
}

.flag-card {
  background-color: #111;
  border: 1px solid #222;
}

.border-left-red  { border-left: 3px solid #dc3545; padding-left: 10px; }
.border-left-info { border-left: 3px solid #0dcaf0; padding-left: 10px; }
.border-left-yellow { border-left: 3px solid #ffc107; padding-left: 10px; }
.border-left-green  { border-left: 3px solid #198754; padding-left: 10px; }