* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: #0b1020;
  color: #e6e8ef;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px;
}

.subtitle {
  opacity: 0.9;
}

.card {
  background: #131a30;
  border: 1px solid #26314f;
  border-radius: 12px;
  margin: 16px 0;
  padding: 16px;
}

.row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin: 10px 0;
}

.btn {
  border: 0;
  border-radius: 8px;
  padding: 10px 14px;
  background: #386bff;
  color: #fff;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

.btn.secondary {
  background: #4b556d;
}

.btn.danger {
  background: #d2474f;
}

input {
  background: #0f1528;
  border: 1px solid #33446d;
  color: #fff;
  border-radius: 8px;
  padding: 10px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 10px 0;
}

video,
canvas {
  width: 420px;
  max-width: 100%;
  border-radius: 10px;
  background: #000;
}

#totpQr {
  max-width: 280px;
  border-radius: 10px;
  display: none;
}

pre {
  white-space: pre-wrap;
  word-break: break-word;
  background: #0d1427;
  border: 1px solid #2a3659;
  border-radius: 8px;
  padding: 10px;
}