body {
  font-family: Arial, Helvetica, sans-serif;
  background: #f7f7f8;
  text-align: center;
  padding: 20px;
  margin: 0;
  color: #111;
}

.container {
  max-width: 760px;
  margin: 0 auto;
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

h2 {
  margin: 0 0 6px;
}

.rev-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: #fff;
  background: #111;
  border-radius: 999px;
  padding: 6px 10px;
}

.card {
  background: #fff;
  border-radius: 20px;
  padding: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  margin-bottom: 14px;
}

button,
.file-label {
  border: 1px solid #d1d5db;
  border-radius: 10px;
  padding: 8px 12px;
  background: #fff;
  cursor: pointer;
  font-size: 14px;
}

button:not(.secondary) {
  background: #111;
  color: #fff;
  border-color: #111;
}

#reader {
  max-width: 420px;
  margin: auto;
}

label {
  display: block;
  text-align: left;
  margin: 10px 0 4px;
  color: #666;
}

input {
  width: 100%;
  border: 1px solid #d1d5db;
  border-radius: 10px;
  padding: 10px;
  font-size: 14px;
}

#fileQr {
  display: none;
}

.actions {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 10px;
}

.status {
  margin-top: 12px;
  font-size: 14px;
  color: #666;
}

.mono {
  font-family: Consolas, "Courier New", monospace;
  word-break: break-all;
}